CN110859440A - Screen lifting mechanism and office table with same - Google Patents

Abstract

The invention relates to a screen lifting mechanism and an office table with the same. The screen lifting mechanism of the invention is characterized by comprising: a support tube having a cavity and a slot; the screw rod nut assembly is provided with a screw rod and a nut which is sleeved on the screw rod and can rotate, and the screw rod and the nut are accommodated in the cavity of the supporting pipe; the driving motor is connected to one end of the screw rod and can drive the screw rod to rotate; and a screen connecting part connected to the nut, and a part of the screen connecting part is positioned outside the supporting pipe. The screen lifting mechanism has simple structure and convenient installation.

Description

Screen lifting mechanism and desk with the same

technical field

The present invention relates to the field of office furniture, and more particularly to a desk, in particular to a desk with an automatic lifting screen.

Background technique

In response to consumer needs, various desks or desks have been developed for use in office environments, providing temporary or permanent desks for one or more employees.

To ensure the privacy when multiple people use it, some existing desks are integrated with screen partitions, and the screen partitions are erected between one side of the desktop part or between two desktop parts, so that people can Work independently and unaffected from each other in a limited space.

In order to adapt to different use occasions and usage requirements, the screen partitions of the existing desks are set to be liftable, so that the desks have screen partitions of different heights. A liftable screen partition is manual, and a hand crank handle is connected to a lifting mechanism to drive the screen partition to move up and down. In addition, an electrically driven automatic lift mechanism has been developed to move the screen partition up and down. The automatic lifting mechanism incorporates a stretchable multi-layer sleeve, and the actuating mechanism is connected to the multi-layer sleeve, thereby driving the multi-layer sleeve to expand and contract to realize the up and down movement of the screen partition.

However, such a screen lifting mechanism with multiple sleeves needs to connect the sleeves to each other through a sliding structure, so the structure is complicated and the installation is inconvenient. Therefore, it is also necessary to further improve the existing screen lifting mechanism.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies in the prior art, the present invention is a screen lifting mechanism for a table, which includes: a support tube, the support tube has a cavity, and a slot is provided on the side wall of the support tube; a screw nut The assembly, the screw nut assembly has a screw and a rotatable nut sleeved on the screw, the screw and the nut are accommodated in the cavity of the support tube; the driving motor is connected to one end of the screw and can drive the screw the rod rotates; and a screen connection part, the screen connection part is connected to the nut, and a part of the screen connection part is located outside the support pipe.

According to one aspect of the present invention, the screen connecting part includes a nut sheath surrounding the nut and being fixed relative to the nut and a screen connecting piece, and the screen connecting member is fixed to the nut sheath and includes all the part of the description.

According to yet another aspect of the present invention, the inner surface of the nut sheath is form-fitted with the outer surface of the nut, and the nut sheath is composed of two halves, the two halves are tightly connected by fasteners.

According to still another aspect of the present invention, the screen connector has a screen support portion located on the outer side of the support pipe, and an insertion portion protruding from one side of the screen support portion and inserted into the slot.

According to yet another aspect of the present invention, the insertion portion of the screen connector is provided with an opening through which the bolt extends into the cavity and is fixed to the nut sheath.

According to still another aspect of the present invention, the outer side of the nut cover opposite to the screen connecting piece has a concave portion, the inner side of the insertion portion opposite to the nut cover has a convex portion, the convex portion and the concave portion engage.

According to another aspect of the present invention, the screen lifting mechanism further includes a motor box, the motor box is located at the first end of the support tube, and the inner cavity of the motor box and the cavity of the support tube pass through a through hole communication, the drive motor is accommodated in the inner cavity of the motor box.

According to still another aspect of the present invention, the screen lifting mechanism is arranged vertically, the motor box is located above the support tube, and the second end below the support tube further includes a detachably installed base, the base fixed to the lead screw.

In addition, the present invention also provides a desk, the desk comprising: a desktop part; a screen, the screen is installed on at least one side of the desktop part; the above-mentioned screen lifting mechanism, the screen lifting mechanism is installed on the desktop The screen is fixed to the part of the screen connection part outside the support tube.

According to still another aspect of the present invention, the desk includes a connecting bracket through which the screen is connected to the table top portion, one end of the connecting bracket is fixed to the part of the screen connecting portion, and the other end of the connecting bracket is fixed to the screen.

According to the screen lifting mechanism of the present invention, the screen lifting mechanism is lifted and lowered by using the screw rod and nut assembly accommodated in only one support tube, the structure of the accommodating part of the lifting mechanism is simplified, the installation is convenient, and the positional accuracy is high. In addition, the repair and maintenance of the screen lift mechanism for desks are quite convenient.

In the screen lifting mechanism according to the present invention, the screen connecting portion is shape-fitted to the nut, so the relative positions of the screen connecting portion and the nut are locked without mutual offset, so that the screen can be moved smoothly.

Description of drawings

A more complete understanding of the present subject matter and its various advantages can be obtained by reference to the following detailed description, wherein reference is made to the accompanying drawings:

FIG. 1 shows a perspective view of a desk to which a screen lifting mechanism according to a preferred embodiment of the present invention is applied.

FIG. 2 shows a bottom perspective view of a desk to which the screen lifting mechanism according to a preferred embodiment of the present invention is applied.

FIG. 3 shows an exploded perspective view of a screen lifting mechanism according to a preferred embodiment of the present invention.

FIG. 4 is a perspective view showing the assembled state of the screen lifting mechanism according to a preferred embodiment of the present invention.

FIG. 5 shows a partial enlarged perspective view of a screen lifting mechanism according to a preferred embodiment of the present invention.

reference number

1 desk

2 desktop

3 table legs

5 screens

10 Screen lift mechanism

11 Support tube

110 Slotted

12 Lead screw nut assembly

121 Lead screw

122 Nuts

123 Recess

15 Drive motor

151 Motor sheath

152 Power cord

16 Motor box

161 Box

162 Motor box cover

163 Brackets

165 through hole

17 Base

18 Screen connection

19 Nut Sheath

191 Ring flange

192 Protrusions

20 Screen connector

201 Screen support

202 Insert

21 Attachment bracket

Detailed ways

The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention, but it is obvious that the present invention can be implemented in many other ways that are different from those described herein. Those skilled in the art can make similar promotion and deduction according to the actual application situation without violating the connotation of the present invention, so the content of this specific embodiment should not limit the protection scope of the present invention.

FIG. 1 shows a perspective view of a desk 1 to which a screen lifting mechanism 10 according to a preferred embodiment of the present invention is applied. FIG. 2 shows a bottom perspective view of the desk 1 to which the screen lifting mechanism 10 according to a preferred embodiment of the present invention is applied.

As shown in FIGS. 1 and 2 , a desk 1 for single use is taken as an example. The desk 1 includes a table top 2 , legs 3 supporting the table top 2 from below, and a screen 5 mounted on one side of the table top 2 . . It can be seen from FIG. 2 that the screen 50 is connected to the table top portion 2 by two screen lifting mechanisms 10 separated by a distance. Specifically, the top of the screen lifting mechanism 10 is fixed to the bottom surface of the table top portion 2, and the screen 5 is fixed to a movable part of the screen lifting mechanism 10 through the connecting bracket 21, so that the screen 5 is moved along one side edge of the table top portion 2. It is fixedly installed relative to the desktop part 2 . The screen lifting mechanism 10 is an electric-driven automatic lifting mechanism, which can make the screen 5 automatically lift up and down as required, and stop to a specific position.

Next, the specific structure of the screen lifting mechanism 10 according to the preferred embodiment will be described with reference to FIG. 3 , FIG. 4 and FIG. 5 .

As shown in the exploded perspective view of FIG. 3 , a screen lift mechanism 10 for a table according to a preferred embodiment of the present invention includes a support tube 11 , a screw nut assembly 12 , a driving motor 15 , a motor box 16 for accommodating the driving motor 15 , and Screen connection part 18 . FIG. 4 shows the assembled screen lifting mechanism 10. In the use state, the support pipe 11 is located below the entire mechanism, and the motor box 16 is located above the support pipe 11 and supported on it.

The support tube 11 is a tube with a cavity. In a preferred embodiment, the support tube 11 is a square tube, but it should be understood that tubes with other cross-sectional shapes are also applicable, such as a hollow tube with a triangular cross-section. Both ends of the support pipe 11 are open, and one side wall of the support pipe 11 has a slot 110 . The slot 110 forms a track along which the screen connecting portion 18 can move. The length of this slot 110 determines the height at which the screen 5 can be raised and lowered, so that the slot 110 extends substantially along most of the length of the support tube 11 .

In particular, the screen lift mechanism 10 includes a lead screw nut assembly 12 for converting the rotational motion of the drive motor 15 into linear motion. Specifically, the lead screw nut assembly 12 has a lead screw 121 and a rotatable nut 122 sleeved on the lead screw 121 . The lead screw 121 and the nut 122 are accommodated in the cavity of the support tube 11 . The lead screw 121 has an external thread, and the nut 122 has a matching internal thread. After installation, the external thread of the lead screw 121 is engaged with the internal thread of the nut 122, so that when the lead screw 121 is rotated by the driving motor 15, the nut 122 It can move linearly along the length direction of the screw rod 121 .

As can be seen from FIG. 3 , the upper end of the lead screw 121 has teeth that mesh with the teeth on the power output of the drive motor 15 to transmit the driving force from the drive motor 15 to the lead screw 121 . Preferably, the toothed end of the lead screw 121 passes through the through hole 165 on the motor box 16 into the inner cavity of the motor box 16, where the lead screw 121 engages with the teeth of the motor. The position of the through hole 165 corresponds to the upper open end of the support pipe 11. In a preferred embodiment, the size of the through hole 165 is substantially equal to the area of the open end of the support pipe 11, but the through hole 165 can also be set to Smaller, as long as the lead screw 121 is installed by passing through it.

In addition, the screw rod 121 also has a fixing structure near the upper end for fixing the screw rod 121 relative to the motor box 16 or the support tube 11 . In the preferred embodiment according to the present invention, the upper end of the screw rod 121 is fixed inside the motor box 16 through a fixing structure. In a state of use, the screw rod 121 is installed in a substantially middle position of the cavity of the support tube 11 in a vertical direction. More specifically, the fixing structure has a fixing plate that is clipped on one end of the screw rod 121 , and the fixing plate is installed into the motor box 16 through a plurality of fasteners.

It can also be seen from FIG. 3 that the lower end of the support tube 11 further includes a detachably mounted base 17 , and the base 17 is fixed to the bottom end of the screw rod 121 , for example, by fasteners. In this way, the screw rod 121 is fixed at both ends and disposed inside the support tube 11 , so that the position of the screw rod 121 can be kept fixed, effectively avoiding vibration or displacement. At the same time, the arrangement of the base 17 also makes the installation of the screw rod 121 very convenient.

Further, the nut 122 is connected to the screen connecting portion 18 of the screen lifting mechanism 10 , so that the screen connecting portion 18 is fixed relative to the nut 122 so as to be able to move with the up and down movement of the nut 122 . A part of the screen connecting part 18 is located on the outside of the support pipe 11 , which is used to connect the screen 5 , usually connected to the bottom of the screen 5 , so that the screen 5 can move up and down accordingly with the movement of the screen connecting part 18 .

In particular, as shown in FIG. 3 , the screen connection part 18 includes a nut sheath 19 and a screen connector 20 , the nut sheath 19 is arranged around the outside of the nut 122 , and the nut sheath 19 is fixed relative to the nut, while the screen connector 20 is preferably The ground is fixed to the nut sheath 19 by fasteners.

To facilitate installation, the nut sheath 19 is designed to consist of two halves, the inner surface of which is form-fitted with the outer surface of the nut 122, and the two halves are tightly connected by fasteners such as bolts .

The form fit between the inner surface of the nut sheath 19 and the outer surface of the nut 122 makes the nut sheath 19 locked relative to the position between the nut 122 and the nut sheath 19 and is not easily displaced. Specifically, in the preferred embodiment according to the present invention, the nut 122 has a substantially square outer surface, that is, in a section perpendicular to the extending direction of the screw 121, the nut 122 has a square outer circumference, and the nut sheath 19 and the nut have a square outer circumference. A portion of the 122 fitting has a corresponding square inner surface. In addition, in order to strengthen the form fit between the nut sheath 19 and the nut 122, the outer surface of the nut 122 has several concave parts 123 and the inner surface of the nut sheath 19 has several convex parts 192 matching the concave parts 123, as shown in FIG. 3 . For example, the corners of the outer surface of the nut 122 are provided with recesses 123, while the corners of the inner surface of the nut sheath 19 are provided with corresponding protrusions 192, the recesses 123 and the protrusions 192 advantageously constitute the nut sheath 19 and nut 122 form fit. When the two halves of the nut sheath 19 are fastened by bolts, there is no displacement between the nut sheath 19 and the nut 122 .

In addition, the upper end of the nut sheath 19 is also provided with an annular flange 191, which is used as a positioning member. When the screen 5 is moved to the preset uppermost position, the annular flange 191 will abut against the lower surface of the motor box 16 inside the support tube 11 .

More specifically, as shown in FIG. 5 , the screen connecting piece 20 in the screen connecting part 18 has a screen supporting part 201 located on the outer side of the supporting pipe 11 and protruding from one side of the screen supporting part 201 and being inserted into the slot 110 . the insertion part 202. The screen support part 201 forms a part outside the support tube 11 for connecting the screen. The screen support portion 201 is formed of a flat plate-like member, and the insertion portion 202 is formed to extend perpendicularly to the flat plate-like member at a substantially middle position thereof. The insertion portion 202 is provided with openings through which fasteners, such as bolts, extend to the interior of the cavity of the support tube 11 and are secured to the nut sheath.

Preferably, a form fit is also formed between the insert of the screen connector 20 and the nut sheath 19 . Specifically, the outer side of the nut sheath 19 opposite to the screen connector 20 has two concave parts, and the two concave parts are spaced up and down, while the inner side of the insertion part 202 opposite to the nut sheath 19 has two convex parts, and the two concave parts are spaced up and down. Each convex portion is respectively engaged with the two concave portions. The preferred embodiment is illustrated with two protrusions and two recesses, but other numbers of protrusions and recesses are also suitable. In this way, when the screen connector 20 is fastened to the nut sheath 19 by fasteners such as bolts, the cooperation of the convex part and the concave part helps to lock the position between the lock nut sheath 19 and the screen connector 20 .

On the other hand, a drive motor 15 is installed in the motor box 16, and a power cord 152 of the drive motor 15 extends out of the motor box 16 from a notch on the vertical side wall of the motor box 16 to be connected to an external power source.

In a preferred embodiment, the motor box 16 is composed of a box body 161 and a motor box cover 162 , and the motor box cover 162 is covered and installed on the upper side of the box body 161 . At the same time, brackets 163 for connecting to the bottom surface of the table top portion 2 are installed on both sides of the box body 161 . In this structure, the box cover 162 does not need to be tightly connected with the box body 161 , but only needs to ensure that the box cover 162 accurately covers the open portion of the box body 161 through structures such as protrusions and grooves.

One end of the driving motor 15 is fixed by a fastener, and the other end is held in position by a motor sheath 151 made of elastic material, so that the vibration of the driving motor 15 can be effectively avoided.

The motor box 16 is located at the first end of the support tube 11 , the inner cavity of the motor box 16 communicates with the cavity of the support tube 11 through a through hole, and the driving motor 15 is accommodated in the inner cavity of the motor box 16 . The screen lift mechanism 10 is vertically arranged in the use state, and the motor box 16 is located above the support tube 11 .

When installed according to the preferred embodiment of the present invention, as shown in FIG. 2 , the screen 5 is connected to the desk 1 through a connecting bracket 21 . One end of the connecting bracket 21 has a fixing plate fixed to the screen 5, and the other end has a fixing plate fixed to the screen connecting piece 20, and they can be connected by fasteners. Corresponding to the arrangement of the screen elevating mechanism 10 , the connecting brackets 21 are connected to the vicinity of two corners of the lower edge of the screen 5 . In use, the drive motors 15 of the two screen lift mechanisms 10 are controlled synchronously, so that the support screen 5 moves up and down smoothly.

According to the screen lifting mechanism 10 of the present invention, the screen lifting mechanism 10 is lifted and lowered by using the screw rod and the nut assembly 12 accommodated in only one support tube 11, which simplifies the structure of the accommodating portion of the lifting mechanism 10. Easy installation and high position accuracy. Moreover, the maintenance and maintenance of the screen lift mechanism 10 are quite convenient.

In the screen elevating mechanism 10 according to the present invention, the screen connecting portion 18 is shape-fitted to the nut 122, and therefore, the relative positions of the screen connecting portion 18 and the nut 122 are locked without mutual offset, so that the screen 5 can be smoothly moved move.

Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention all fall within the protection scope defined by the claims of the present invention.

Claims (10)

1. A screen lifting mechanism (10) for a table, characterized in that, comprising: a support pipe (11), the support pipe (11) has a cavity, and a slot (110) is provided on the side wall of the support pipe (11); A lead screw nut assembly (12), the lead screw nut assembly (12) having a lead screw (121) and a rotatable nut (122) sleeved on the lead screw (121), the lead screw (121) 121) and the nut (122) are accommodated in the cavity of the support tube (11); a drive motor (15) connected to one end of the lead screw (121) and capable of driving the lead screw (121) to rotate; and A screen connection part (18) is connected to the nut (122), and a part of the screen connection part (18) is located outside the support tube (11). 2. The screen lifting mechanism (10) according to claim 1, wherein the screen connecting part (18) comprises a nut sheath (19) and a screen connecting piece (20), the nut sheath (19) ) is enclosed on and fixed relative to said nut (122), while said screen connector (20) is fixed to said nut sheath (19) and includes a position in said support tube (11) the part of the outer side. 3. The screen lifting mechanism (10) according to claim 2, wherein the inner surface of the nut sheath (19) is shaped to fit with the outer surface of the nut, And the nut sheath (19) is composed of two halves, and the two halves are fastened and connected by fasteners. 4. The screen lifting mechanism (10) according to claim 2, characterized in that, the screen connecting member (20) has a screen supporting part (201) located on the outer side of the supporting pipe (11) and a screen supporting part (201) located on the outer side of the supporting pipe (11) and extending from the screen One side of the screen support portion (201) protrudes from an insertion portion (202) inserted into the slot (110). 5. The screen lifting mechanism (10) according to claim 4, characterized in that, an opening (202) of the screen connecting member (20) is provided with an opening, and a fastener passes through the opening. A hole extends inside the cavity and is secured to the nut sheath (19). 6. The screen lifting mechanism (10) according to claim 4, wherein a recessed portion is provided on the outer side of the nut sheath (19) opposite to the screen connecting member (20), The insertion portion (202) has a convex portion on the inner side opposite to the nut sheath (19), and the convex portion engages with the concave portion. 7. The screen lifting mechanism (10) according to claim 1, characterized in that, the screen lifting mechanism (10) further has a motor box (16), and the motor box (16) is located in the support tube (11) ), the inner cavity of the motor box (16) communicates with the cavity of the support tube (11) through a through hole (165), and the drive motor (15) is accommodated in the motor box (16). ) in the lumen. 8. The screen lifting mechanism (10) according to claim 7, wherein the screen lifting mechanism (10) is arranged vertically, and the motor box (16) is located above the support pipe (11), The lower second end of the support tube (11) further comprises a detachably mounted base (17), the base (17) being fixed to the lead screw (121). 9. A desk (1) comprising: desktop (2); A screen (5), the screen (5) is installed on at least one side of the table top portion (2); The screen lifting mechanism (10) according to any one of claims 1-8, the screen lifting mechanism (10) is mounted to the bottom of the table top portion 2, and the screen (5) is fixed to the screen connection on the part of the part (18) which is located outside the support tube (11). 10. The desk (1) according to claim 9, characterized in that it further comprises a connecting bracket (21), and the screen (5) is connected to the desktop part (2) through the connecting bracket (21) , one end of the connecting bracket is fixed to the part of the screen connecting part (18), and the other end of the connecting bracket (21) is fixed to the screen (5).

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