CN109854116B - an emergency clutch - Google Patents

Abstract

The invention discloses an emergency clutch device, which adopts the technical scheme that the emergency clutch device comprises a shell and a stepped shaft positioned in the shell, wherein the stepped shaft comprises a first step section and a second step section which are sequentially connected, a driving gear is fixed on the first step section, a driven gear is sleeved outside the second step section, a connecting hole extending along the axial direction is formed at the connecting position of the first step section and the second step section, a connecting key is radially arranged in the connecting hole, a key groove matched with the connecting key is formed in the end surface of the driven gear, a central hole is formed in one end of the stepped shaft close to the driven gear inwards, a pressing rod is matched in the central hole in a sliding manner, one end of the pressing rod is abutted against the connecting key, the other end of the pressing rod penetrates through the shell to extend to the outside, and a spring is connected between the other end of the connecting key opposite to the pressing rod and the end surface of the, when power failure or failure occurs, the door body can be easily pushed and pulled by hands to open and close the door.

Description

an emergency clutch

technical field

The present invention relates to a clutch device, more particularly, it relates to an emergency clutch device.

Background technique

The swing door operator is an automatic door opening and closing device used for "swing doors", which is widely used in some houses and factories. Its main structure includes a body and a horizontally arranged swing arm. A drive motor and a deceleration mechanism are arranged in the body. The output end of the deceleration mechanism is linked with the swing arm to drive the swing arm to rotate in the circumferential direction in the horizontal direction. The body is fixed on both sides of the door leaf. On the upright column, one end of the swing arm is fixedly connected with the door leaf, and the swing arm rotates horizontally around the body to pull the door leaf to rotate to realize the opening and closing of the door. The existing swing door operators have the following defects in the actual use process: when the power is cut off or the control system fails, the door cannot be opened and closed manually, causing inconvenience to the user.

Therefore, a new technical solution needs to be proposed to solve this problem.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an emergency clutch device, which can easily push and pull the door body by hand to open and close the door when a power failure or failure occurs.

In order to achieve the above objects, the present invention provides the following technical solutions: an emergency clutch device, comprising a housing and a stepped shaft located in the housing, the stepped shaft comprising a first stepped section and a second stepped section connected in sequence, the A driving gear is fixed on the first stepped section, a driven gear is arranged on the outer casing of the second stepped section, and a connecting hole extending in the axial direction is opened at the connection between the first stepped section and the second stepped section. A connecting key is arranged in the hole along the radial direction, and a key slot that cooperates with the connecting key is provided on the end face of the driven gear. One end of the stepped shaft close to the driven gear is provided with a center hole inward, and the center hole is in the center hole. A pressing rod is slidably fitted, one end of the pressing rod is in contact with the connecting key, the other end extends through the casing to the outside world, and a spring is connected between the other end of the connecting key opposite the pressing rod and the end face of the connecting hole.

It is further arranged that at least two fixed blocks parallel to each other are fixed on the outer surface of the casing, each fixed block is provided with a shaft hole, and a driving rod is arranged on the casing at the corresponding position of the pressing rod, and the driving rod is arranged on the casing. The rod is rotatably and fixedly sleeved in each shaft hole, a notch with a semicircular cross-section is formed on the circumferential surface of the driving rod, and the shaft end of the pressing rod is embedded in the notch and abuts with each other, When the driving rod rotates, the outer edge of the notch pushes the pressing rod to move inward, and drives the connecting key to move from the keyway to the first step section.

It is further arranged that the fixing block is arranged along a vertical gap, and the driving rod extends radially outward to form a limit portion that is mutually abutted with the upper surface of the fixing block.

It is further provided that the top end of the driving rod is bent to form a loosening-proof part abutting against the upper surface of the casing, and the upper surface of the casing is covered with a rubber layer at the corresponding position of the loosening-proof part.

It is further arranged that a through hole is opened at the center of the connecting key, and the shaft end of the pressing rod is integrally connected with a stepped circular portion with a smaller diameter, the stepped circular portion is slidingly matched with the through hole, and one end of the spring is sleeved on the through hole. outside the step circle.

It is further arranged that the connecting key is provided with a first counterbore that cooperates with the spring, and the end surface of the connecting hole is provided with a second counterbore that cooperates with the spring.

It is further provided that the key slot is a cross-shaped slot.

It is further arranged that both ends of the stepped shaft extend axially to form a third stepped section and a fourth stepped section, the third stepped section and the fourth stepped section are sleeved with bearings, and the inner wall of the housing is provided with a bearing. An annular storage groove for placing the bearing is integrally connected.

It is further arranged that the casing is divided into a left part of the casing and a right part of the casing, an annular storage slot is respectively provided on the inner wall of the left part of the casing and the right part of the casing, and the left part of the casing and the inner wall of the right part of the casing are respectively provided. The right part of the housing is detachable and fixed.

It is further arranged that the left part of the casing is integrally connected with a first flange part at the outer edge of the connecting surface; the right part of the casing is integrally connected with a second flange part at the outer edge of the connecting surface; The first flange portion and the second flange portion are provided with bolt holes at corresponding positions.

To sum up, the present invention has the following beneficial effects compared with the prior art:

First, by pushing the pressing rod outside the casing, the elastic force of the spring can be overcome, and the connecting key can be moved from the keyway of the second stepped section to the direction of the first stepped section, so that the transmission is interrupted. Easy to open and close the door;

Second, the outer end of the pressing rod is embedded in the notch of the driving rod and abuts with it. By rotating the driving rod, the pressing rod can be controlled to move inwardly, the transmission is interrupted, and the operation is convenient.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a split structure diagram of an embodiment of an emergency clutch device according to the present invention;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is the split structure diagram of the transmission part;

Figure 4 is a schematic structural diagram of a driven gear;

5 is a schematic diagram of the connection at the pressing rod and the connecting key;

6 is a schematic structural diagram of a stepped shaft;

Fig. 7 is a structural schematic diagram at the drive rod;

FIG. 8 is a partial enlarged view of B in FIG. 7 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1, an emergency clutch device includes a casing 100 and a stepped shaft 200 located in the casing 100. As shown in FIG. 6, the stepped shaft 200 includes a first stepped section 201 and a second stepped section connected in sequence 202, a driving gear 203 is fixed on the first stepped section 201. In this embodiment, the driving gear 203 and the first stepped section 201 are integrally formed. In addition, the driving gear 203 and the first stepped section 201 can also be welded, keyed Connection, etc. As shown in Figures 2 and 3, the second stepped section 202 is provided with a driven gear 300. It should be noted that the driven gear 300 and the second stepped section 202 are movably connected, and the first stepped section 201 and A connecting hole 204 extending in the axial direction is formed at the connection of the second step section 202 , a connecting key 400 is arranged in the radial direction in the connecting hole 204 , a key groove 301 is formed on the end surface of the driven gear 300 , and the connecting key 400 A spring 600 is connected between one side of the first stepped section 201 and the end face of the connecting hole 204. Under the elastic force of the spring 600, the connecting key 400 is embedded in the key slot 301 to realize linkage, and the stepped shaft 200 is close to the driven One end of the gear 300 is provided with a central hole 205 inward, and a pressing rod 500 is slidably fitted in the central hole 205 . 201 moves in the direction until it is separated from the keyway 301 to interrupt the transmission, and the other end of the pressing rod 500 extends through the casing 100 to the outside, which is convenient for the user to operate.

Therefore, the specific working mode of this emergency clutch device is as follows: in the working state, the driving gear 203 rotates under the driving of other transmission components. Specifically, the other transmission components may be deceleration mechanisms such as worms and planetary gears connected to the drive motor. (not shown in the figure), the rotation of the driving gear 203 drives the stepped shaft 200 and the connecting key 400 to rotate, the connecting key 400 and the keyway 301 cooperate with each other, and the driven gear 300 is also driven to achieve linkage, and the driven gear 300 is driven by transmission components such as gear shafts. The swing arm rotates in the horizontal direction (not shown in the figure) to open and close the door; when the power failure or the control system fails, push the pressing rod 500 by hand, and the pressing rod 500 overcomes the elastic force of the spring 600 to push the connecting key 400 from the key slot 301 The inside moves toward the first stepped section 201 until it is separated from the keyway 301. Since the driven gear 300 and the second stepped section 202 are in a movable socket, after the connecting key 400 is detached, the stepped shaft 200 does not rotate to drive the driven gear. When the 300 rotates, the transmission is interrupted, and the door leaf can be easily pushed and pulled by hand.

As shown in FIG. 7 and FIG. 8 , a driving rod 800 is rotatably and fixedly connected to the outer surface of the housing 100 at the corresponding position of the pressing rod 500 , and a semicircular notch 801 is opened on the circumferential surface of the driving rod 800 . Next, the shaft end of the pressing rod 500 is embedded in the notch 801 and abuts with it. At this time, the two are in a position parallel to each other (see FIG. 8 ); The outer edge of the push rod 500 pushes the pressing rod 500 to move inward, and drives the connecting key 400 to move from the keyway 301 to the first step section 201. When the notch 801 and the end face of the pressing rod 500 are perpendicular to each other and abut, the connecting key 400 and the keyway 301 Disengage, transmission is interrupted.

Please continue to refer to FIG. 7 and FIG. 8 , in a specific embodiment, at least two fixing blocks 700 parallel to each other are fixed on the outer surface of the housing 100 , each fixing block 700 is provided with a shaft hole, and the driving rod 800 Passing through each shaft hole in turn, the principle of two points and one line is used to ensure that the driving rod 800 rotates along its axis line to avoid its deviation. In this embodiment, the fixing block 700 is arranged along the vertical gap, and the driving rod 800 A limit portion 802 abutting against the upper surface of the fixing block 700 is formed extending radially outward to prevent the driving rod 800 from falling out of the shaft hole.

As another embodiment, the fixing block 700 can also be arranged along the lateral gap, but considering that the driving rod 800 may slip sideways during the rotation process, in this embodiment, it is preferably arranged vertically, and the driving rod 800 is in the vertical direction. Under the action of gravity, it can be ensured that the notch 801 and the pressing rod 500 always correspond to each other.

In addition, in order to avoid the contact loosening under the action of the spring 600 after the notch 801 and the end surface of the pressing rod 500 are perpendicular to each other and abut against each other, the top end of the driving rod 800 is bent to form an anti-loosening part that is in contact with the upper surface of the housing 100 803 , the upper surface of the housing 100 is covered with a rubber layer 103 at the corresponding position of the anti-loosening portion 803 . , the static friction force between the two increases, and the driving rod 800 can be positioned better, so that the sliding door can be realized even when there is only one person.

As shown in FIG. 5 , the connecting key 400 is provided with a through hole, the shaft end of the pressing rod 500 is integrally connected with a stepped circular portion 501 with a smaller diameter, and the stepped circular portion 501 is slidably matched with the through hole. The form of inner and outer setting can ensure that the connecting key 400 only moves in the axial direction, preventing it from shifting, and the stability is higher; and in this embodiment, the through hole on the connecting key 400 is located at the center, and the connecting key 400 is at The key grooves 301 are distributed symmetrically in the center, and the force is more uniform, which can prolong the service life; similarly, as shown in FIG. Evenly, the transmission performance is better; one end of the spring 600 is sleeved outside the stepped circular portion 501, which can play a limiting role and prevent it from deviating.

As shown in FIG. 5 and FIG. 6 , the connecting key 400 is provided with a first counterbore 401 that cooperates with the spring 600, and the end surface of the connecting hole 204 is provided with a second counterbore 206 that cooperates with the spring 600. The hole 401 and the second countersunk hole 206 can play a limiting role for embedding the spring 600, which is more convenient to assemble; The spring 600 needs to be positioned first, then hold the stepped shaft 200 with one hand, and insert the pressing rod 500 into the center hole 205 with the other hand. The setting of the first countersunk hole 401 and the second countersunk hole 206 can facilitate single-person operation and greatly improve assembly. efficiency.

For ease of understanding, with reference to Figure 2 and Figure 3, the following describes the specific installation method of the emergency clutch device of the swing door operator:

First, the driven gear 300 is sleeved on the second stepped section 202, and the key groove 301 is rotated to the corresponding position of the connecting hole 204, and then the connecting key 400 is inserted into the connecting hole 204 and embedded in the key groove 301, and then the spring The two ends of the 600 are respectively installed in the first counterbore 401 and the second counterbore 206, and finally the pressing rod 500 is inserted into the central hole 205, and the stepped circular portion 501 of the pressing rod 500 passes through the through hole in the center of the connecting key 400 in turn. and spring 600.

As shown in FIG. 6 , both ends of the stepped shaft 200 extend in the axial direction to form a third stepped section 207 and a fourth stepped section 208 respectively. The third stepped section 207 and the fourth stepped section 208 are both sleeved with bearings 900 (see 1), as shown in FIG. 1 and FIG. 7, the inner wall of the housing 100 is integrally connected with an annular storage groove 104 for placing the bearing 900. The bearings 900 at both ends can play a supporting role on the one hand, and the stepped shaft 200 is horizontally connected. Being erected in the casing 100, the friction with the casing 100 can be reduced at the same time, and the transmission performance can be improved.

Secondly, the casing 100 is divided into a left part 101 of the casing and a right part 102 of the casing. The inner walls of the left part 101 of the casing and the right part 102 of the casing are respectively provided with an annular storage groove 104, which can be assembled conveniently. Removable and fixed connection; specifically, the left part 101 of the casing and the right part 102 of the casing are respectively provided with a first flange part 105 and a second flange part 106 at the outer edge of the connecting surface, and both are provided at corresponding positions There are bolt holes, which can be disassembled and fixed by fasteners such as bolts, which is more convenient for disassembly and assembly.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (7)

1. An emergency clutch device is characterized in that: the stepped shaft comprises a first step section and a second step section which are sequentially connected, a driving gear is fixed on the first step section, a driven gear is sleeved outside the second step section, a connecting hole extending along the axial direction is formed in the connecting position of the first step section and the second step section, a connecting key is radially arranged in the connecting hole, a key groove matched with the connecting key is formed in the end face of the driven gear, a central hole is formed in one end, close to the driven gear, of the stepped shaft, a pressing rod is matched in the central hole in a sliding mode, one end of the pressing rod is abutted to the connecting key, the other end of the pressing rod penetrates through the shell and extends to the outside, and a spring is connected between the other end, opposite to the pressing rod, of the connecting key and the end face of the connecting hole; the outer surface of the shell is fixed with at least two fixing blocks which are parallel to each other, each fixing block is provided with a shaft hole, a driving rod is arranged at a position corresponding to the pressing rod on the shell, the driving rod is rotatably and fixedly sleeved in each shaft hole, a notch with a semicircular section is formed in the circumferential surface of the driving rod, the shaft end of the pressing rod is embedded in the notch and is abutted against the shaft end of the pressing rod, and when the driving rod rotates, the outer edge of the notch pushes the pressing rod to move inwards and drives the connecting key to move towards the first step section from the key groove; the fixed block is arranged along a vertical gap, and the driving rod extends outwards along the radial direction to form a limiting part which is mutually abutted with the upper surface of the fixed block; the top end of the driving rod is bent to form a locking part which is mutually abutted with the upper surface of the shell, and the upper surface of the shell is covered with a rubber layer at the position corresponding to the locking part.

2. The emergency clutch device according to claim 1, wherein: the connecting key is characterized in that a through hole is formed in the center of the connecting key, a step round part with a smaller diameter is integrally connected to the end of the pressing rod shaft, the step round part is in sliding fit with the through hole, and one end of the spring is sleeved outside the step round part.

3. The emergency clutch device according to claim 2, wherein: the connecting key is provided with a first counter bore matched with the spring, and the end face of the connecting hole is provided with a second counter bore matched with the spring.

4. An emergency clutch device according to claim 3, characterized in that: the key groove is a cross-shaped groove.

5. An emergency clutch device according to claim 1 or 2 or 3 or 4, characterized in that: the both ends of step shaft form third bench and fourth bench along axial extension respectively, third bench and fourth bench all overlap outward and are equipped with the bearing, the last body coupling of shells inner wall is used for placing the cyclic annular of bearing is put the thing groove.

6. The emergency clutch device according to claim 5, wherein: the casing components of a whole that can function independently set up to casing left part and casing right part, be equipped with an annular on the inner wall of casing left part and casing right part respectively and put the thing groove, fixed connection can be dismantled to casing left part and casing right part.

7. The emergency clutch device according to claim 6, wherein: the casing left part is located the outer fringe of connecting the face and is connected with first flange portion an organic whole, the casing right part is located the outer fringe of connecting the face and is connected with second flange portion an organic whole, bolt hole has all been seted up in corresponding position department to first flange portion and second flange portion.

Images