CN112709752B - Flexible latch device and medical equipment - Google Patents

Abstract

The scheme provides a flexible bolt device, its slider can slide along the guide rail, and the elastic pin can slide for the slider to can produce the linkage with the slider, and the elastic pin still cooperatees with the pinhole of second component, and locking mechanism can lock the slider in first position, realizes locking state or pre-locking state, and in addition, locking mechanism can also be with the slider location in the second position, so that the elastic pin resets. When the locking mechanism is operated, the sliding block can be pushed to slide to the locking position, the sliding block pushes the elastic pin to perform linkage action, if the elastic pin is aligned with the pin hole, the elastic pin is pushed by the sliding block to be inserted into the pin hole to realize the locking state, and if the elastic pin is not aligned with the pin hole, the elastic pin is blocked, and the sliding block generates pretightening force on the elastic pin to realize the pretightening state. Therefore, the flexible bolt device can adjust the relative position of the kinematic pair in the pre-locking state, so that the elastic pin can be smoothly and automatically inserted into the pin hole, thereby simplifying the operation. The medical equipment with the flexible plug device has the same beneficial effects.

Description

Flexible bolt device and medical equipment

Technical Field

The invention belongs to the technical field of bolt devices, and particularly relates to a flexible bolt device and medical equipment.

Background

In the prior art, during the transportation of medical instruments, the locking of the motion joint is generally manually operated by an operator. For example, when the display support arm of the ultrasonic trolley moves between packaging transportation or departments, the rotary joint of the display support arm needs to be fixed, so that the display support arm cannot be undesirably moved in the transportation process, and the display is prevented from being collided and damaged or damaged to human bodies.

Currently, fasteners such as self-locking latch devices or set screw devices are commonly used, and both devices are rigidly connected. The latch device needs to rotate the latch hole on the moving part to be aligned with the latch to insert the lock, and if the latch hole is not aligned with the latch, the lock cannot be completed. The flat opening on the moving part of the set screw is required to be opposite to the position of the set screw, and if the set screw is not aligned, the effective locking force cannot be achieved.

The two devices can be locked by aligning the positions, the bolt and the bolt hole are arranged in the shell, an operator cannot see the relative positions of the bolt and the bolt hole, the operator needs to consider the states of the moving part and the locking device, and sometimes the position of the moving part needs to be adjusted repeatedly, so that the operation is inconvenient.

Therefore, how to design a latch device, which can be pre-locked first and adjust the relative position of the kinematic pair in the pre-locked state, so that the latch can be automatically inserted into the pin hole is a problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a flexible bolt device and medical equipment, which can realize pre-locking, and can adjust the relative position of a kinematic pair in a pre-locking state, so that a bolt can be smoothly and automatically inserted into a pin hole, and great convenience can be brought to an operator.

In order to solve the above technical problems, the present invention provides a flexible latch device, including:

A guide rail for mounting on the first member;

The sliding block is arranged on the guide rail and can slide along the guide rail;

The elastic pin is connected with the sliding block, can slide relatively with the sliding block and can stretch along the guide rail under the linkage action of the sliding block, and is used for being matched with the pin hole of the second component;

The locking mechanism is arranged on the guide rail and matched with the sliding block, and is used for locking the sliding block at the first position when the sliding block slides to the first position along the guide rail, so that the sliding block pushes the elastic pin to extend out of the guide rail and insert into the pin hole to achieve a locking state, and when the sliding block extends out of the guide rail to be blocked along the guide rail, the sliding block generates pretightening force on the elastic pin through the elastic action of the elastic pin to achieve a pretightening state, and the locking mechanism is also used for positioning the sliding block at the second position when the sliding block slides to the second position along the guide rail to reset the elastic pin.

Optionally, the elastic pin comprises a bolt and a first spring, two ends of the first spring are respectively connected with the bolt and the sliding block, and a first end of the bolt is used for being inserted into the pin hole of the second component.

Optionally, the second end of the latch penetrates through the sliding block, and a limiting piece for preventing the latch from being separated from the sliding block is arranged, and the latch can slide relative to the sliding block.

Optionally, the bolt is equipped with the step, first spring housing is located outside the bolt, first end butt of first spring in the step, the second end butt of first spring in the slider.

Optionally, the slider is provided with a limit recess, and the second end of the first spring abuts against the limit recess.

Optionally, the elastic pin comprises a first pin body and a second pin body connected through an elastic mechanism, the first pin body is used for being inserted into a pin hole of the second component (2), and the second pin body is connected with the sliding block.

Optionally, the first pin body and the second pin body are sleeved and connected for a pipe shaft.

Optionally, the sliding block further comprises an elastic piece arranged along the extending direction of the bolt, and the elastic piece is arranged between the guide rail and the sliding block.

Optionally, the elastic component is the second spring, the both ends of second spring respectively butt guide rail with the slider.

Optionally, the sliding block comprises a button for pushing the sliding block, and the button is arranged at the outer end part of the sliding block.

Optionally, the guide rail is provided with a port through which the button passes, and the port is provided with a clamping part for preventing the button from being separated from the guide rail.

Optionally, the locking mechanism comprises a swing rod hinged on the guide rail, a protrusion is arranged on the swing rod, a track groove matched with the protrusion is arranged on the sliding block, and the protrusion is connected with the track groove in a sliding manner;

The track groove comprises a self-locking position and a line stop position, when the sliding block slides from the second position to the first position along the guide rail, the protrusion slides from the line stop position to the self-locking position to lock the sliding block at the first position, and when the sliding block slides from the first position to the second position along the guide rail, the protrusion slides from the self-locking position to the line stop position to position the sliding block at the second position.

Optionally, the track groove packet process path, the return path and the self-locking channel communicated with the process path and the return path are arranged on the self-locking channel;

The row stop bit comprises a starting end bit of the process path and a terminating end bit of the return path;

when the sliding block slides from the second position to the first position along the guide rail, the protrusion slides to the self-locking position along the progress path and the self-locking channel from the starting end position of the progress path;

when the sliding block slides along the guide rail from the first position to the second position, the protrusion starts to slide from the self-locking position to the end position of the return path along the self-locking channel and the return path.

Optionally, the sliding block is pushed by external force to enable the protrusion to slide from the starting end position of the process path to the ending end position of the process path, or slide from the self-locking position to the starting end position of the return path along the self-locking channel;

The sliding block enables the protrusion to slide from the ending end position of the progress path to the self-locking position along the self-locking channel or from the starting end position of the return path to the ending end position of the return path under the action of the elastic piece.

Optionally, a straight line perpendicular to the extending direction of the slider is used as a reference line, and the start end position of the progress path and the end position of the return path are both located on the reference line.

Optionally, the start end of the process path and the end of the backhaul path are the same end.

Optionally, the ending end of the process path and the starting end of the return path are respectively composed of limiting concave positions far away from the reference line.

Optionally, the self-locking channel includes a groove position, the groove position forms the self-locking position, and the self-locking position is closer to the reference line than both the ending end position of the process path and the starting end position of the return path.

Optionally, the two sides of the self-locking position are a first side wall close to the process path and a second side wall close to the return path, the first side wall is opposite to the end position of the process path, and the second side wall and the start end position of the return path are staggered in the extending direction of the reference line.

Optionally, the process path is provided with a first guiding inclined plane for guiding the protrusion to a termination end position of the process path, and the self-locking channel is provided with a second guiding inclined plane for guiding the protrusion to a termination end position of the return path.

Optionally, the locking mechanism includes a knob for pushing the slider, and the knob is in threaded connection with the guide rail.

The invention also provides medical equipment which is characterized by comprising a first component, a second component and the flexible bolt device, wherein the second component can move relative to the first component, the flexible bolt device is arranged on the first component, and the second component is provided with a pin hole matched with an elastic pin of the flexible bolt device.

Optionally, the medical device is an ultrasonic diagnostic device, wherein the first member is a mounting base, and the second member is a rotating arm.

The scheme provides a flexible bolt device which comprises a sliding block, an elastic pin and a locking mechanism, wherein the sliding block can slide along a guide rail, the elastic pin can slide relative to the sliding block and can be linked with the sliding block, the elastic pin is also matched with a pin hole of a second component, the locking mechanism can lock the sliding block at a first position, meanwhile, the sliding block can act on the elastic pin in a linked mode to achieve a locking state or a pre-locking state, in addition, the locking mechanism can also position the sliding block at a second position to reset the elastic pin, the sliding block can be pushed to slide to a locking position (namely the first position) during operation, the sliding block can push the elastic pin to act in a linked mode, if the elastic pin is aligned with the pin hole, the elastic pin is pushed to be inserted into the pin hole of the second component by the sliding block, a kinematic pair formed by the first component and the second component is directly locked, and if the elastic pin is not aligned with the pin hole, the sliding block generates a pre-tightening force on the elastic pin to achieve the pre-locking state. And then moving the kinematic pair, and automatically inserting the elastic pin into the pin hole under the pretightening force when the kinematic pair reaches the alignment position of the elastic pin and the pin hole, so as to lock the kinematic pair. The use of the elastic pin changes the rigid bolt into the flexible bolt, so that the elastic pin is self-adaptive to the state of the pin hole, the pre-locking or locking state is automatically realized, and the lock can be unlocked at any time. Therefore, the flexible bolt device can adjust the relative position of the kinematic pair in the pre-locking state, so that the elastic pin can be smoothly and automatically inserted into the pin hole, the operation is simplified, and great convenience is brought to an operator. The scheme also provides medical equipment with the flexible bolt device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a flexible latch device according to the present invention connected to a first member;

FIG. 2 is an axial cross-sectional view of a flexible latch device provided by the present invention;

FIG. 3 is a schematic view of a flexible latch device according to the present invention;

FIG. 4 is a schematic diagram of a track groove on a slider according to the present invention;

FIG. 5 is a diagram of the track of the swing rod in the track groove;

FIG. 6 is an oblique view of the flexible latch device provided by the present invention;

FIG. 7 is a schematic diagram of a connection between a flexible latch device and a kinematic pair according to the present invention;

Fig. 8 is a partial enlarged view of fig. 7.

In the upper graph:

1-first component, 2-second component, 3-guide rail, 4-slide block, 5-bolt, 6-first spring, 7-second spring, 8-swing rod, 9-track groove, 10-button, 11-clamping part, 12-ear plate, 13, first side wall, 14, second side wall, 15, first guiding inclined plane, 16 and second guiding inclined plane;

a-a line stop position, b-a termination end position of a process path, d-a start end position of a return path and c-a self-locking position.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the plural means that more than two are used for distinguishing technical features if the first and second are described only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The core of the invention is to provide an electromagnet control device and a medical instrument, which can be not influenced by the power failure of an electromagnet, can enable a release switch of a gas spring to be opened for a long time, and enable an operator to have plenty of time to adjust the position of a supported device.

In order to make the technical solution provided by the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-3 and 7-8, the flexible latch device provided by the invention comprises a guide rail 3, a sliding block 4 and a locking mechanism, wherein the guide rail 3 is used for being installed on a first component 1, the sliding block 4 is installed on the guide rail 3 and can slide along the guide rail 3, an elastic pin is connected with the sliding block 4 and can slide relatively to the sliding block 4 and can stretch along the guide rail 3 through the linkage action of the sliding block 4, the elastic pin is used for being matched with a pin hole of a second component 2, the locking mechanism is installed on the guide rail 3 and matched with the sliding block 4 and is used for locking the sliding block 4 at a first position when the sliding block 4 slides along the guide rail 3 to a first position, so that the sliding block 4 pushes the elastic pin to extend out of the guide rail 3 and insert into the pin hole to realize a locking state, and when the sliding block 4 extends along the guide rail 3 to be blocked, the sliding block 4 generates a pretightening force on the elastic pin through the elastic pin to realize the pretightening state, and the locking mechanism is also used for positioning the sliding block 4 at a second position when the sliding block 4 slides along the guide rail 3 to a second position to enable the elastic pin to reset.

When an operator operates, the sliding block 4 can be pushed to slide to a locking position (namely a first position), the sliding block 4 can push the elastic pin to perform linkage action, if the elastic pin is aligned with the pin hole, the elastic pin is pushed by the sliding block 4 to be inserted into the pin hole of the second component 2, a kinematic pair formed by the first component 1 and the second component 2 is directly locked, a locking state is realized, and if the elastic pin is not aligned with the pin hole, the elastic pin is blocked at the moment, the sliding block 4 generates pretightening force on the elastic pin, and the pretightening state is realized. After that, the kinematic pair is moved to enable the first component 1 and the second component 2 to move relatively, and when the kinematic pair reaches the alignment position of the elastic pin and the pin hole, the elastic pin is automatically inserted into the pin hole under the action of the pretightening force, so that the kinematic pair is locked. The use of the elastic pin changes the rigid bolt into the flexible bolt, so that the elastic pin is self-adaptive to the state of the pin hole, the pre-locking or locking state is automatically realized, and the lock can be unlocked at any time. Therefore, the flexible bolt device can adjust the relative position of the kinematic pair in the pre-locking state, so that the elastic pin can be smoothly and automatically inserted into the pin hole, and an operator can lock the kinematic pair without waiting for the bolt to be aligned with the pin hole and then pressing or pushing the bolt, thereby simplifying the operation and bringing great convenience to the operator.

In one embodiment, the elastic pin comprises a latch 5 and a first spring 6, both ends of the first spring 6 are respectively connected with the latch 5 and the slider 4, and a first end of the latch 5 is used for being inserted into a pin hole of the second member 2. As shown in fig. 2, the front end of the plug 5 is provided with a step, and the end of the slider 4 is provided with a limit recess. The first end of the first spring 6 is abutted with the step of the bolt 5, the second end of the first spring 6 is abutted with the bottom of the limit concave part of the sliding block 4 for providing elastic force for flexible connection, and in the pre-locking state, the sliding block 4 can generate pre-tightening force on the bolt 5 through the first spring 6.

Further, the second end of the bolt 5 penetrates through the slider 4, and a limiting piece for preventing the bolt 5 from being separated from the slider 4 is arranged, and in addition, relative sliding between the bolt 5 and the slider 4 can be realized. It will be appreciated that the stop member prevents the slide 4 from being disengaged from the second end of the pin 5 when relative sliding movement occurs between the pin 5 and the slide 4. Specifically, the limiting member may be a bolt, and the bolt is connected to the second end of the bolt 5, and the radius of the nut of the bolt is larger than the radius of the bolt 5, so that the limiting function can be achieved.

In the first case, if the latch 5 is not blocked, that is, the latch 5 is just aligned with the pin hole of the second member 2, the slider 4 is pushed to slide to the first position, so that the slider 4 pushes the latch 5 to move and insert into the pin hole, and the kinematic pair formed by the first member 1 and the second member 2 is locked, thereby realizing the locked state. The first spring 6 is not active at this time. In the second case, if the latch 5 is blocked, that is, the latch 5 is not aligned with the pin hole, the latch 5 will be blocked by the second member 2 and cannot move, then the slider 4 will compress the first spring 6 in the process of sliding to the first position, so that the first spring 6 stores energy, and the slider 4 generates a pretightening force on the latch 5, at this time, a pretightening state is achieved. After that, the operator can not operate the bolt device any more, but only needs to adjust the relative movement of the two components, once the bolt 5 moves to the position alignment of the pin hole and the bolt 5, the bolt 5 is automatically inserted into the pin hole under the pushing of the first spring 6, so that the kinematic pair formed by the two components is locked, and the locking state is realized. After the bolt 5 is inserted into the pin hole, the first spring 6 is reset.

In another embodiment (not shown in the figures), the elastic pin comprises a first pin body and a second pin body connected by an elastic mechanism, and the first pin body is intended to be inserted into the pin hole of the second member 2, and the second pin body is connected to the slider 4. The elastic pin can also adopt a connection mode that the first pin body and the second pin body are sleeved and connected for the pipe shaft. The elastic mechanism can be a spring or the like.

The present embodiment further comprises an elastic member arranged in the extending direction of the elastic pin, which elastic member is arranged between the guide rail 3 and the slider 4. Specifically, the elastic member is a second spring 7, and two ends of the second spring 7 are respectively connected with the guide rail 3 and the sliding block 4, so that the sliding block 4 can be limited to move towards the first end direction of the elastic pin. The second spring 7 provides a preload for the slider 4 during locking, on the one hand, and on the other hand, acts to push the slider 4 back together with the elastic pin during unlocking.

Further, the solution also comprises a button 10 for pushing the slider 4, the button 10 being arranged at an end of the slider 4 remote from the elastic pin, i.e. the button 10 is arranged at an outer end of the slider 4 for pushing the slider 4 to move in the locking direction. The button 10 may be directly connected to the slider 4 or may be integrally formed with the slider 4. Of course, the button 10 can also be abutted against one end of the sliding block 4 to push the sliding block 4 to slide along the inner cavity of the guide rail 3. In order to prevent the button 10 from falling, the edge of the button 10 connected with the slider 4 is set to be a flanging structure, meanwhile, the guide rail 3 is provided with a port for the button 10 to pass out, the port is provided with a clamping part 11, one end face of the flanging is abutted with the slider 4, and when the slider 4 slides backwards, the clamping part 11 can be abutted with the other end face of the flanging of the button 10.

In a specific embodiment, the locking mechanism comprises a swing rod 8 hinged on the guide rail 3, a protrusion is arranged on the swing rod 8, a track groove 9 matched with the protrusion is arranged on the sliding block 4, and the protrusion is slidably connected with the track groove 9. The track groove 9 comprises a self-locking position c and a line stop position a, when the sliding block 4 slides from the second position to the first position along the guide rail 3, the protrusion slides from the line stop position a to the self-locking position c to lock the sliding block 4 at the first position, and when the sliding block 4 slides from the first position to the second position along the guide rail 3, the protrusion slides from the self-locking position c to the line stop position a to position the sliding block 4 at the second position.

In the above mechanism, the button 10 is used for providing pushing force, the slide block 4 and the swing rod 8 are used for guiding and locking respectively, and the second spring 7 is used for resetting. The second spring 7, the sliding block 4, the swinging rod 8, the button 10 and the guide rail 3 are combined to form a ball collision device, so that pressing locking and re-pressing unlocking can be realized, the first spring 6, the plug pin 5, the sliding block 4 and the guide rail 3 are combined to form an overrunning device, stroke overrunning of the plug pin 5 to the sliding block can be realized, further pressing pre-locking can be realized, and the action is more flexible.

The track groove 9 includes a process path and a return path, and a self-locking channel communicating the process path and the return path, wherein the self-locking position c is disposed on the self-locking channel, the travel stop position a includes a start end position of the process path and a stop end position of the return path, when the slider 4 slides along the guide rail 3 from the second position to the first position, the protrusion slides along the process path and the self-locking channel from the start end position of the process path (i.e., the travel stop position a in fig. 5) to the self-locking position c, and when the slider 4 slides along the guide rail from the first position to the second position, the protrusion slides along the self-locking channel and the return path from the self-locking position c to the stop end position of the return path (also corresponding to the travel stop position a in fig. 5). More specifically, the sliding block 4 is pushed by an external force to enable the protrusion to slide from the starting end position of the process path to the ending end position b of the process path or from the self-locking position c to the starting end position d of the return path along the self-locking channel, and the sliding block 4 enables the protrusion to slide from the ending end position b of the process path to the self-locking position c along the self-locking channel or from the starting end position d of the return path to the ending end position of the return path through the action of the elastic piece.

The start end position of the progress path and the end position of the return path are both located on the reference line L1 by taking a straight line perpendicular to the extending direction of the slider 4 as the reference line L1. That is, the start end of the process path and the end of the return path are not identical, but they need to be located on the reference line L1, preferably, the start end of the process path and the end of the return path are identical, that is, the running stop bit a is set to be only one.

Furthermore, in order to lock the protrusion of the swing rod 8 at the self-locking position c, the self-locking channel includes a groove position, the groove position forms the self-locking position c, and the self-locking position c is closer to the reference line than the ending position b of the process path and the starting position d of the return path. Therefore, when the protrusion of the swing rod 8 slides to the self-locking position c, if no other external force acts, the protrusion will always remain in the self-locking position c and will not slide out, so that the sliding block 4 can be locked at the first position. Preferably, the two sides of the self-locking position c are respectively a first side wall 13 close to the process path and a second side wall 14 close to the return path, so that the protrusion of the swing rod 8 can slide from the process path into the self-locking position c more smoothly, and the first side wall 13 can be opposite to the end position b of the process path, and the start end position d of the second side wall 14 and the return path are staggered in the extending direction of the reference line. In addition, the first guiding inclined plane 15 for guiding the protrusion to the ending position b of the process path is arranged on the process path, and the second guiding inclined plane 16 for guiding the protrusion to the ending position d of the return path is arranged on the self-locking channel, so that the protrusion can more smoothly slide into the ending position b of the process path and the starting position d of the return path.

By adopting the locking mechanism to be matched with the sliding block 4, the sliding block 4 can be pushed at any position, so that the sliding block 4 can be directly pressed down regardless of the relative movement position of the kinematic pair during operation. When the sliding block 4 is pressed for the 1 st time, if the bolt 5 is aligned with the pin hole, the kinematic pair is directly locked, and if the bolt 5 is not aligned with the pin hole and is in a pre-locking state at the moment, the kinematic pair is moved, so that the kinematic pair reaches the position where the bolt 5 is aligned with the pin hole, and the bolt 5 can be automatically inserted into the pin hole, so that the kinematic pair can be locked.

When the slider 4 is in the pressed state, the lock/pre-lock state can be released by pressing the slider 4 for the 2 nd time, regardless of whether the kinematic pair is locked or not. That is, the operation of pressing the slider 4 is independent with respect to both the position of the kinematic pair and the locked or pre-locked state of the kinematic pair, i.e., the 1 st pressing of the slider 4 realizes the locking/pre-locking, and the 2 nd pressing of the slider 4 realizes the unlocking/pre-locking, simplifying the operation.

As shown in fig. 3-5, the locking and unlocking actions are as follows, the button 10 is in an ejected state when the device is in an initial state, the protrusion on the swing rod 8 is at the initial end position (i.e. the running stop position a) of the progress path, and the slider is in the first position and keeps steady state. After the button 10 is pressed for the 1 st time (released after being pressed in place), the sliding block 4 moves forwards, the swinging rod 8 swings along with the sliding block, and the movement track of the protrusion on the swinging rod 8 in the track groove 9 in the sliding block 4 is a running stop position a (corresponding to the starting end position of the progress path), a termination end position b of the progress path and a self-locking position c. After the protrusion on the swing rod 8 reaches the self-locking position c of the track groove, the sliding block 4 slides to the second position and keeps self-locking steady state. The sliding of the slide 4 from the second position to the first position is moved forward by a distance which will compress the second spring 7, the second spring 7 being charged for return, and in addition, the forward movement of the slide 4 will simultaneously push the elastic pin portion, the slide 4 pushing the plug pin 5 via the first spring 6, the plug pin 5 having a tendency to move forward. If the latch 5 is not blocked, i.e. the latch 5 is aligned with the pin hole of the second member 2, the latch 5 will move forward to be inserted into the pin hole, so that the kinematic pair formed by the first member 1 and the second member 2 is locked, and the locked state is realized. If there is a blocking in front of the bolt 5, i.e. the bolt 5 is not aligned with the pin hole of the second member 2, the bolt 5 will be blocked by the second member 2 and cannot move, at this time, the slider 4 will compress the first spring 6, so that the first spring 6 stores energy, and a pre-lock state is realized. The first member 1 or the second member 2 can be independently operated to enable the first member 1 and the second member 2 to move relatively, and once the pin holes are aligned with the pin positions, the pin is automatically inserted into the pin holes under the pushing of the first spring 6, so that the kinematic pair is locked. After the bolt 5 is inserted into the pin hole, the first spring 6 is reset.

After the button 10 is pressed for the 2 nd time (released after being pressed in place), the sliding block 4 moves forwards firstly, then moves backwards under the action of the spring of the second spring 7, the swinging rod 8 swings accordingly, and the moving track of the protrusion on the swinging rod 8 in the track groove 9 in the sliding block 4 is a self-locking position c- & gt the initial end position d- & gt the running stop position a (corresponding to the end position of the return path). After the protrusion on the swing rod 8 reaches the running stop a of the track groove 9, the sliding block 4 returns to the second position from the first position and moves backwards for a certain distance, so that the elastic pin is reset. Specifically, when the slider 4 moves backward, the slider 4 directly pulls the latch 5 through the above-mentioned limiting member, so that the latch 5 moves backward. If the front bolt 5 is inserted into the pin hole, the first spring 6 is in a reset state, the bolt moves backwards, and the first spring 6 does not act. If the front bolt 5 is not inserted into the pin hole, the first spring 6 is in a compressed state, and the first spring 6 is reset by the backward movement of the bolt. In summary, when the button 10 of the slider 4 is pressed again, unlocking can be achieved both in the locked state and in the pre-locked state.

As described above, the above-mentioned locking mechanism may be a mechanism having a locking function, which is complex in structure and is connected by several elements in cooperation. Of course, a locking member of simple structure is also possible.

As regards the catch mechanism, in a second embodiment, the catch mechanism may comprise a toggle button for pushing the slider 4, the toggle button being in threaded connection with the guide rail 3. Specifically, an external threaded hole is formed in the pulling button, an internal thread matched with the external thread of the pulling button is formed in the accommodating cavity of the guide rail 3, the end face of the pulling button is abutted against the sliding block 4, the pulling button is screwed into the guide rail to push the sliding block 4 to a locking position (namely a first position), the pulling button is screwed out to a proper position and is not connected with the guide rail 3 in a threaded manner, and at the moment, the sliding block 4 can return to an unlocking position (namely a second position) under the pushing of a reset spring (such as a second spring 7). Other structures except for the locking mechanism in this embodiment may be the same as those in the above embodiment, and will not be described here again.

In addition, as shown in fig. 6-8, the application also discloses a medical device, which comprises a first component 1, a second component 2 and the flexible bolt device, wherein the second component 2 can move relative to the first component 1, the flexible bolt device is arranged on the first component 1, and the second component 2 is provided with a pin hole matched with an elastic pin of the flexible bolt device.

Wherein, the guide rail 3 can be provided with an ear plate for connecting the first component 1, and the ear plate can be connected with the first component 1 through bolts. Specifically, the medical equipment can be ultrasonic diagnostic equipment, wherein the first component 1 can be an installation seat on a main machine seat, the second component 2 can be a rotating support arm, and the first component 1 and the second component 2 form a kinematic pair, so that the flexible bolt device can limit the rotation between the first component 1 and the second component 2.

The medical device with the flexible latch device also has all the technical effects described above, and will not be described in detail herein.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (20)

1. A flexible latch device, comprising:

a guide rail (3) for mounting on the first member (1);

The sliding block (4) is arranged on the guide rail (3) and can slide along the guide rail (3);

The elastic pin is connected with the sliding block (4), can slide relative to the sliding block (4) and can stretch and retract along the guide rail (3) under the linkage action of the sliding block (4), and is used for being matched with a pin hole of the second component (2);

The locking mechanism is arranged on the guide rail (3) and matched with the sliding block (4) and is used for locking the sliding block (4) at a first position when the sliding block (4) slides to the first position along the guide rail (3) so that the sliding block (4) pushes the elastic pin to extend out of the guide rail (3) and insert into the pin hole to achieve a locking state, and when the sliding block (4) extends out of the guide rail (3) to be blocked, the sliding block (4) generates pretightening force on the elastic pin through the elastic action of the elastic pin to achieve a pretightening state, and the locking mechanism is also used for positioning the sliding block (4) at a second position when the sliding block (4) slides to the second position along the guide rail (3) so as to reset the elastic pin;

The locking mechanism further comprises a button (10) for pushing the sliding block (4), wherein the button (10) is arranged at the outer end part of the sliding block (4), and the edge, connected with the sliding block (4), of the button (10) is in a flanging structure, or the locking mechanism comprises a poking button for pushing the sliding block (4), the poking button is in threaded connection with the guide rail (3), and the end face of the poking button is used for abutting against the sliding block (4);

The locking mechanism comprises a swing rod (8) hinged to the guide rail (3), a protrusion is arranged on the swing rod (8), a track groove (9) matched with the protrusion is arranged on the sliding block (4), and the protrusion is connected to the track groove (9) in a sliding manner;

The track groove (9) comprises a self-locking position (c) and a running stop position, when the sliding block (4) slides from the second position to the first position along the guide rail (3), the protrusion slides from the running stop position to the self-locking position (c) to lock the sliding block (4) at the first position, and when the sliding block (4) slides from the first position to the second position along the guide rail (3), the protrusion slides from the self-locking position (c) to the running stop position to position the sliding block (4) at the second position.

2. A flexible latch device according to claim 1, characterized in that the elastic pin comprises a latch (5) and a first spring (6), both ends of the first spring (6) being connected to the latch (5) and the slider (4), respectively, the first end of the latch (5) being intended to be inserted into the pin hole of the second member (2).

3. A flexible latch arrangement according to claim 2, characterised in that the second end of the latch (5) extends through the slider (4) and is provided with a stop preventing the latch (5) from being disengaged from the slider (4), the latch (5) being slidable relative to the slider (4).

4. The flexible latch device according to claim 2, wherein the latch (5) is provided with a step, the first spring (6) is sleeved outside the latch (5), a first end of the first spring (6) is abutted against the step, and a second end of the first spring (6) is abutted against the slider (4).

5. A flexible latch device according to claim 4, wherein the slider (4) is provided with a limit recess, the second end of the first spring (6) abutting against the limit recess.

6. A flexible latch device according to claim 1, characterized in that the elastic pin comprises a first pin body and a second pin body connected by an elastic mechanism, and in that the first pin body is intended to be inserted into a pin hole of the second member (2), the second pin body being connected with the slider.

7. The flexible latch device of claim 6 wherein the first pin body and the second pin body are sleeve-connected for a tube shaft.

8. A flexible latch device according to any one of claims 1-7, further comprising an elastic member arranged in the direction of extension of the elastic pin, said elastic member being arranged between the guide rail (3) and the slider (4).

9. The flexible latch device according to claim 8, characterized in that said elastic element is a second spring (7), both ends of said second spring (7) respectively abutting against said guide rail (3) and said slider (4).

10. A flexible latch device according to claim 1, characterised in that the guide rail (3) is provided with a port through which the button (10) passes, the port being provided with a detent (11) for preventing the button (10) from being disengaged from the guide rail (3).

11. The flexible latch device according to claim 8, wherein the track groove (9) comprises a progress path and a return path, and a self-locking channel communicating the progress path and the return path, the self-locking bit (c) being provided on the self-locking channel;

The row stop bit comprises a starting end bit of the process path and a terminating end bit of the return path;

When the sliding block (4) slides along the guide rail (3) from the second position to the first position, the protrusion slides from the starting end position of the progress path to the self-locking position (c) along the progress path and the self-locking channel;

when the sliding block (4) slides along the guide rail from the first position to the second position, the protrusion slides from the self-locking position (c) to the end position of the return path along the self-locking channel and the return path.

12. The flexible latch device according to claim 11, wherein the slider (4) is pushed by an external force to slide the protrusion from the start end position of the process path to the end position (b) of the process path or from the self-locking position (c) along the self-locking channel to the start end position (d) of the return path;

the sliding block (4) enables the protrusion to slide from the ending end position (b) of the progress path to the self-locking position (c) along the self-locking channel or slide from the starting end position (d) of the return path to the ending end position of the return path under the action of the elastic piece.

13. A flexible latch according to claim 11, characterized in that a straight line perpendicular to the extension of the slider (4) is used as a reference line, on which the start end of the travel path and the end of the return path are both located.

14. The flexible latch device of claim 13 wherein the start end of the process path and the end of the return path are the same end.

15. The flexible latch device of claim 13 wherein the terminating end (b) of the process path and the initiating end (d) of the return path are each comprised of a limit recess located away from the reference line.

16. The flexible latch device of claim 13 wherein the self-locking channel includes a recessed location that forms the self-locking location (c), the self-locking location (c) being closer to the reference line than both the terminating end (b) of the travel path and the initiating end (d) of the return path.

17. The flexible latch of claim 16 wherein the self-locking position (c) is flanked by a first sidewall adjacent the travel path opposite a terminating end position (b) of the travel path and a second sidewall adjacent the return path, the second sidewall and a starting end position (d) of the return path being offset from each other in the direction of extension of the reference line.

18. The flexible latch of claim 16 wherein said travel path is provided with a first guide ramp for guiding said protuberance to a terminating end (b) of said travel path and said self-locking channel is provided with a second guide ramp for guiding said protuberance to a terminating end (d) of said return path.

19. A medical device comprising a first member (1), a second member (2) and a flexible latch arrangement according to any one of claims 1-18, the second member (2) being movable relative to the first member (1), the flexible latch arrangement being mounted to the first member (1), the second member (2) being provided with a pin aperture for cooperation with a resilient pin of the flexible latch arrangement.

20. The medical device according to claim 19, wherein the medical device is an ultrasonic diagnostic device, wherein the first member (1) is a mounting and the second member (2) is a rotating arm.