CN215109902U

CN215109902U - Linear actuator

Info

Publication number: CN215109902U
Application number: CN202120872275.XU
Authority: CN
Inventors: 吕佐朝; 李龙; 陈春奇
Original assignee: Dewertokin Technology Group Co Ltd
Current assignee: Dewertokin Technology Group Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-10
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a linear actuator, this linear actuator includes the casing, the actuator body, afterbody subassembly and bearing, the afterbody subassembly includes afterbody connecting piece and apron, afterbody connecting piece and apron are the integral type structure, the afterbody connecting piece includes first connecting portion and the second connecting portion of being connected with first connecting portion, first connecting portion can be dismantled and connect in the apron, second connecting portion fixed connection is in the outer lane of bearing, actuator body fixed connection is in the inner circle of bearing, the casing is used for connecting second connecting portion and actuator body, be equipped with the boss on the second connecting portion, along the circumference of second connecting portion, the cross-section of boss is the polygon, be equipped with the recess on the casing, the boss is pegged graft in the recess. This linear actuator, afterbody connecting piece and apron are the integral type structure, simple structure, and low in production cost is convenient for assemble, dismantlement and later maintenance, and can adjust the relative angle of the relative actuator body of afterbody subassembly.

Description

Linear actuator

Technical Field

The utility model relates to a transmission field especially relates to a linear actuator.

Background

The linear actuator includes a linear actuator with a tail attachment. At present, the assembly position between the tail component and the linear actuator body of the existing linear brake with the tail accessory is fixed, and the relative angle of the tail component relative to the actuator body cannot be adjusted in a rotating mode, so that the application range of the linear brake is small, and meanwhile, the existing tail component is complex in structure, high in production cost and complex in assembly steps of the tail component.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a linear actuator to can not rotate the relative angle of adjusting the relative actuator body of afterbody subassembly among the solution prior art, linear actuator's application scope is little, and the structure of afterbody subassembly is complicated, and manufacturing cost is high, and the complicated problem of assembly step of afterbody subassembly.

To achieve the purpose, the utility model adopts the following technical proposal:

a linear actuator comprises a shell, an actuator body, a tail assembly and a bearing, wherein the tail assembly comprises a tail connecting piece and a cover plate, the tail connecting piece and the cover plate are of an integral structure, the tail connecting piece comprises a first connecting portion and a second connecting portion connected with the first connecting portion, the first connecting portion is detachably connected with the cover plate, the second connecting portion is fixedly connected with an inner ring of the bearing, the actuator body is fixedly connected with an outer ring of the bearing, the shell is used for connecting the second connecting portion with the actuator body, a boss is arranged on the second connecting portion, the cross section of the boss is polygonal along the circumferential direction of the second connecting portion, a groove is formed in the shell, and the boss is inserted into the groove.

Preferably, each side of the polygon is equal in length.

Preferably, the cover plate comprises a third connecting portion and two fourth connecting portions respectively connected to two ends of the third connecting portion, clamping protrusions are arranged at two ends of the outer peripheral surface of the first connecting portion along the first direction, clamping grooves are formed in the fourth connecting portions, and the clamping protrusions are clamped in the clamping grooves.

Preferably, guide grooves are formed in two ends of the outer peripheral surface of the first connecting portion along the second direction, guide blocks are arranged on the fourth connecting portion and are inserted into the guide grooves, and the first direction is perpendicular to the second direction.

Preferably, the connecting device further comprises a first connecting piece, wherein first through holes are formed in two ends of the third connecting portion along the second direction, and the first connecting piece penetrates through the first through holes and is in threaded connection with the first connecting portion.

Preferably, the first connecting portion is provided with a first C-shaped groove, the third connecting portion is provided with a second C-shaped groove, and an opening of the first C-shaped groove is opposite to an opening of the second C-shaped groove.

Preferably, the clamping protrusion is provided with a guide surface.

Preferably, the housing includes an upper housing and a lower housing detachably connected to the upper housing, a portion of the groove is disposed in the upper housing, and another portion of the groove is disposed in the lower housing.

Preferably, the device further comprises a second connecting piece, a second through hole is formed in the upper shell, and the second connecting piece penetrates through the second through hole and is in threaded connection with the lower shell.

Preferably, the boss has an octagonal cross-sectional shape along a circumferential direction of the second connection portion.

The utility model has the advantages that:

an object of the utility model is to provide a linear actuator, this linear actuator includes the casing, the actuator body, afterbody subassembly and bearing, the afterbody subassembly includes afterbody connecting piece and apron, afterbody connecting piece and apron are the integral type structure, the afterbody connecting piece includes first connecting portion and the second connecting portion of being connected with first connecting portion, first connecting portion can be dismantled and connect in the apron, second connecting portion fixed connection is in the outer lane of bearing, actuator body fixed connection is in the inner circle of bearing, the casing is used for connecting second connecting portion and actuator body, be equipped with the boss on the second connecting portion, circumference along the second connecting portion, the cross-section of boss is the polygon, be equipped with the recess on the casing, the boss is pegged graft in the recess. Compared with the prior art, the linear actuator has the advantages that the tail connecting piece and the cover plate are of an integrated structure, the structure is simple, and the production cost is low; the actuator body is fixedly connected to the inner ring of the bearing by fixedly connecting the second connecting portion of the tail connecting member to the outer ring of the bearing, when the angle of the tail component relative to the actuator body needs to be adjusted, the tail connecting piece is rotated to a required angle relative to the actuator body, it will be appreciated that the outer race of the bearing rotates relative to the inner race of the bearing to effect adjustment of the angle of the trailing link relative to the actuator body, and the housing connects the second connecting portion of the trailing link to the actuator body, wherein, the boss of the second connecting part is inserted in the groove of the shell, the section of the boss is polygonal, the boss is inserted in the groove of the shell, the angle of the regulated tail connecting piece relative to the actuator body is kept unchanged, so that the tail connecting piece can be regulated to a required angle relative to the actuator body, and the use scene and the application range of the linear brake are enlarged; secondly, can dismantle through setting up first connecting portion and connect in the apron for the afterbody subassembly is convenient for assemble, is dismantled and later maintenance uses manpower sparingly.

Drawings

Fig. 1 is a schematic structural diagram of a linear actuator according to an embodiment of the present invention;

fig. 2 is an exploded view of a linear actuator provided by an embodiment of the present invention;

fig. 3 is a schematic structural view of a tail link of a linear actuator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cover plate of a linear actuator according to a first viewing angle, according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a cover plate of a linear actuator along a second viewing angle according to an embodiment of the present invention.

In the figure:

11. a groove; 12. an upper housing; 13. a lower housing; 14. a second through hole;

2. an actuator body;

3. a tail connector; 31. a first connection portion; 311. clamping convex; 3111. a guide surface; 312. a guide groove; 313. a first C-shaped groove; 32. a second connecting portion; 321. a boss;

4. a cover plate; 41. a third connecting portion; 411. a first through hole; 412. a second C-shaped groove; 42. a fourth connecting portion; 421. a card slot; 422. a guide block;

5. and a bearing.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a linear actuator, as shown in fig. 1-5, this linear actuator includes the casing, actuator body 2, afterbody subassembly and bearing 5, the afterbody subassembly includes afterbody connecting piece 3 and apron 4, afterbody connecting piece 3 and apron 4 are the integral type structure, afterbody connecting piece 3 includes first connecting portion 31 and the second connecting portion 32 of being connected with first connecting portion 31, first connecting portion 31 can be dismantled and connect in apron 4, second connecting portion 32 fixed connection is in the outer lane of bearing 5, 2 fixed connection of actuator body are in the inner circle of bearing 5, the casing is used for connecting second connecting portion 32 and brake body 2, be equipped with boss 321 on the second connecting portion 32, along the circumference of second connecting portion 32, the cross-section of boss 321 is the polygon, be equipped with recess 11 on the casing, boss 321 pegs graft in recess 11. Compared with the prior art, the linear actuator has the advantages that the tail connecting piece 3 and the cover plate 4 are of an integrated structure, the structure is simple, and the production cost is low; the second connecting part 32 of the tail connecting piece 3 is fixedly connected to the outer ring of the bearing 5, the actuator body 2 is fixedly connected to the inner ring of the bearing 5, when the angle of the tail assembly relative to the actuator body 2 needs to be adjusted, the tail connecting piece 3 is rotated to a required angle relative to the actuator body 2, it can be understood that the outer ring of the bearing 5 rotates relative to the inner ring of the bearing 5 to realize the adjustment of the angle of the tail connecting piece 3 relative to the actuator body 2, then the second connecting part 32 of the tail connecting piece 3 is connected with the actuator body 2 by using the shell, wherein, the boss 321 is inserted in the groove 11 of the shell, the cross section of the boss 321 is polygonal, the boss 321 is inserted in the groove 11 of the shell to limit the angle of the adjusted tail connecting piece 3 relative to the actuator body 2 to be kept unchanged, and the tail connecting piece 3 can be adjusted to a required angle relative to the actuator body 2, the use scene and the application range of the linear brake are enlarged; secondly, can dismantle through setting up first connecting portion 31 and connect in apron 4 for the afterbody subassembly is convenient for assemble, is dismantled and later maintenance uses manpower sparingly.

Specifically, the second connecting portion 32 of the tail connector 3 is inserted into the outer ring of the bearing 5 by interference.

Preferably, each side of the polygon is equal in length. It will be appreciated that the cross-sectional shape of the groove 11 is the same as the cross-sectional shape of the boss 321. When the angle of the tail component relative to the actuator body 2 needs to be adjusted, the tail connecting piece 3 is rotated, and the lengths of each side of the polygon are equal, so that the second connecting part 32 of the rotated tail connecting piece 3 can be effectively assembled with the shell, namely, the boss 321 of the second connecting part 32 can be inserted into the groove 11 of the shell, and the angle of the tail component relative to the actuator body 2 is limited to be kept unchanged. Meanwhile, the lengths of all the sides of the polygon are equal, so that a user can clearly determine the rotation angle of the tail connecting piece 3 at each time, and the angle of the tail connecting piece 3 relative to the actuator body 2 can be further adjusted conveniently.

In the present embodiment, as shown in fig. 2 and 3, the boss 321 has an octagonal cross-sectional shape along the circumferential direction of the second connection portion 32. I.e. at 45 deg. as a minimum rotation angle until the tail connector 3 is rotationally adjusted to the desired angle.

Optionally, as shown in fig. 1 to 5, the cover plate 4 includes a third connecting portion 41 and two fourth connecting portions 42 respectively connected to two ends of the third connecting portion 41, two ends of the outer circumferential surface of the first connecting portion 31 are respectively provided with a locking protrusion 311 along the first direction, the fourth connecting portions 42 are provided with a locking groove 421, and the locking protrusion 311 is locked in the locking groove 421. The tail connecting piece 3 and the cover plate 4 are assembled, the assembling mode is simple, and the assembling efficiency is high.

Preferably, as shown in fig. 3, the click protrusion 311 is provided with a guide surface 3111. The guide surface 3111 of the locking protrusion 311 is used for guiding the locking protrusion 311 to be locked in the locking groove 421, so as to further improve the assembling efficiency.

Alternatively, as shown in fig. 2 to 4, the first connecting portion 31 has guide grooves 312 formed at both ends of the outer peripheral surface thereof along the second direction, the fourth connecting portion 42 has guide blocks 422, the guide blocks 422 are inserted into the guide grooves 312, and the first direction is perpendicular to the second direction. Through pegging graft in guide way 312 along the second direction with guide block 422, can inject the relative position of postlude connector 3 and apron 4 along first direction to the protruding 311 joint of card of first connecting portion 31 is in the draw-in groove 421 of fourth connecting portion 42, thereby further improves the assembly efficiency of postlude connector 3 and apron 4. Preferably, the guide block 422 is provided to an inner wall of the first connection portion 31. It will be appreciated that the snap projections 311 prevent the tail connector 3 from shifting in the second direction relative to the cover plate 4, and the guide blocks 422 prevent the tail connector 3 from shifting in the first direction relative to the cover plate 4, thereby completely defining the relative position of the tail connector 3 to the cover plate 4.

In the present embodiment, as shown in fig. 3, each end of the outer circumferential surface of the first connection portion 31 is provided with two tabs 311 along the first direction, and the guide groove 312 is located between the two tabs 311. In other embodiments, one or more protrusions 311 may be disposed at each end of the outer circumferential surface of the first connection portion 31 along the first direction.

In other embodiments, a clamping protrusion may be disposed on the fourth connecting portion 42, and two ends of the outer circumferential surface of the first connecting portion 31 are both provided with a clamping groove along the first direction, and the clamping protrusion is clamped in the clamping groove; guide blocks are arranged at two ends of the outer peripheral surface of the first connecting portion 31 along the second direction, and guide grooves are formed in the fourth connecting portion 42 and are inserted into the guide grooves.

Optionally, as shown in fig. 3 and 5, a first connecting piece is further included, and both ends of the third connecting portion 41 are provided with first through holes 411 along the second direction, and the first connecting piece passes through the first through holes 411 and is screwed to the first connecting portion 31. With realize being connected in dismantling of postlude connecting piece 3 and apron 4, be convenient for postlude connecting piece 3 and apron 4 assembly, dismantlement and later maintenance. While the load-bearing capacity of the tail connector 3 and the cover plate 4 in the second direction is further enhanced. Preferably, the first connecting piece is a self-tapping screw.

In the present embodiment, as shown in fig. 3 and 5, each end of the third connection portion 41 is provided with two first through holes 411. In other embodiments, one or more first through holes 411 may be provided at each end of the third connection portion 41.

Alternatively, as shown in fig. 1 to 5, the first connecting portion 31 is provided with a first C-shaped groove 313, the third connecting portion 41 is provided with a second C-shaped groove 412, and an opening of the first C-shaped groove 313 is opposite to an opening of the second C-shaped groove 412. The first C-shaped groove 313 of the first connecting portion 31 and the second C-shaped groove 412 of the third connecting portion 41 form a receiving groove that can be used to assemble a connecting rod of a bed, sofa, or other device.

Preferably, as shown in fig. 1 and 2, the housing includes an upper housing 12 and a lower housing 13 detachably coupled to the upper housing 12, a portion of the recess 11 is provided in the upper housing 12, and another portion of the recess 11 is provided in the lower housing 13. By providing the housing as an upper housing 12 and a lower housing 13 which is removably connected to the upper housing 12, assembly of the tail assembly to the actuator body 2 is facilitated, as is adjustment of the angle of the tail connector 3 relative to the actuator body 2.

Optionally, as shown in fig. 2, a second connecting member is further included, a second through hole 14 is provided on the upper shell 12, and the second connecting member passes through the second through hole 14 and is screwed to the lower shell 13. To enable detachable connection of the upper and

lower housings

12, 13 to facilitate assembly of the trailing link 3 with the actuator body 2 and also to facilitate adjustment of the angle of the trailing link 3 relative to the actuator body 2. Preferably, the second connector is a self-tapping screw. In the present embodiment, four second through holes 14 are provided in the upper case 12.

The actuator body 2 belongs to the prior art, and is not described in detail herein.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The linear actuator is characterized by comprising a shell, an actuator body (2), a tail assembly and a bearing (5), wherein the tail assembly comprises a tail connecting piece (3) and a cover plate (4), the tail connecting piece (3) and the cover plate (4) are of an integrated structure, the tail connecting piece (3) comprises a first connecting part (31) and a second connecting part (32) connected with the first connecting part (31), the first connecting part (31) is detachably connected with the cover plate (4), the second connecting part (32) is fixedly connected with an outer ring of the bearing (5), the actuator body (2) is fixedly connected with an inner ring of the bearing (5), the shell is used for connecting the second connecting part (32) with the actuator body (2), and a boss (321) is arranged on the second connecting part (32), along the circumference of second connecting portion (32), the cross-section of boss (321) is the polygon, be equipped with recess (11) on the casing, boss (321) peg graft in recess (11).

2. A linear actuator according to claim 1, wherein the length of each side of the polygon is equal.

3. The linear actuator according to claim 1, wherein the cover plate (4) comprises a third connecting portion (41) and two fourth connecting portions (42) respectively connected to two ends of the third connecting portion (41), two ends of the outer circumferential surface of the first connecting portion (31) are respectively provided with a clamping protrusion (311) along a first direction, the fourth connecting portions (42) are provided with clamping grooves (421), and the clamping protrusions (311) are clamped in the clamping grooves (421).

4. The linear actuator according to claim 3, wherein both ends of the outer circumferential surface of the first connecting portion (31) are provided with guide grooves (312) along a second direction, the fourth connecting portion (42) is provided with guide blocks (422), the guide blocks (422) are inserted into the guide grooves (312), and the first direction is perpendicular to the second direction.

5. Linear actuator according to claim 4, characterized in that it further comprises a first connection piece, in the second direction, said third connection part (41) being provided at both ends with a first through hole (411), said first connection piece passing through said first through hole (411) and being screwed to said first connection part (31).

6. Linear actuator according to claim 3, characterized in that the first connection part (31) is provided with a first C-shaped groove (313), the third connection part (41) is provided with a second C-shaped groove (412), the opening of the first C-shaped groove (313) and the opening of the second C-shaped groove (412) being opposite.

7. Linear actuator according to claim 3, characterized in that the snap-on projection (311) is provided with a guide surface (3111).

8. Linear actuator according to claim 1, characterized in that the housing comprises an upper housing (12) and a lower housing (13) detachably connected to the upper housing (12), a part of the recess (11) being provided in the upper housing (12) and another part of the recess (11) being provided in the lower housing (13).

9. The linear actuator according to claim 8, characterized in that it further comprises a second connection member, said upper casing (12) being provided with a second through hole (14), said second connection member passing through said second through hole (14) and being screwed to said lower casing (13).

10. The linear actuator according to claim 1, wherein the boss (321) has an octagonal sectional shape in a circumferential direction of the second connecting portion (32).