CN113143111B

CN113143111B - Supporting device

Info

Publication number: CN113143111B
Application number: CN202010013782.8A
Authority: CN
Inventors: 黄富国
Original assignee: Hongfujin Precision Industry Wuhan Co Ltd
Current assignee: Hongfujin Precision Industry Wuhan Co Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2023-12-01
Anticipated expiration: 2040-01-07
Also published as: CN113143111A

Abstract

A support device comprising a housing having an opening formed at a housing end thereof and including a hollow portion; the support device further includes: the supporting seat is sleeved in the shell through the opening and comprises a first thread device; the transmission mechanism is accommodated in the hollow part and comprises a second thread device which is in threaded connection with the first thread device; the pushing device is movably connected with the shell, the pushing device is used for driving the transmission mechanism to rotate, and then the second thread device is matched with the first thread device, so that the transmission mechanism drives the shell to move towards the supporting seat or move away from the supporting seat to adjust the height of the supporting device, and the height of the supporting device can be adjusted.

Description

Supporting device

Technical Field

The application relates to the field of mechanical structures, in particular to a supporting device.

Background

At present, the sweeping robot gradually becomes a common household appliance of a modern family due to the function and convenience of simple operation. However, the height of the existing sweeping robot is fixed, and the sweeping robot is easy to rub with gaps, equipment and the like with the same height when working, so that the sweeping robot is blocked, and the normal working of the sweeping robot is affected.

Disclosure of Invention

In view of the above, it is necessary to provide a support device, the height of which can be adjusted.

A support device comprising a housing:

the shell end of the shell is provided with an opening and comprises a hollow part;

the support device further includes:

the supporting seat is sleeved in the shell through the opening and comprises a first thread device;

the transmission mechanism is accommodated in the hollow part and comprises a second thread device which is in threaded connection with the first thread device;

the pushing device is movably connected with the shell, the pushing device is used for driving the transmission mechanism to rotate, and then the second thread device is matched with the first thread device, so that the transmission mechanism drives the shell to move towards the supporting seat or move away from the supporting seat to adjust the height of the supporting device.

Further, the transmission mechanism comprises a first gear assembly and a second gear, the first gear assembly is movably connected with the shell, the first gear assembly comprises a second thread device, the second gear is rotatably connected with the shell, the second gear is meshed with the first gear assembly, and the pushing device is used for driving the second gear to rotate along a first direction.

Further, the transmission mechanism comprises a third gear, the third gear is rotationally connected with the shell, the third gear is meshed with the first gear assembly, and the pushing device is used for driving the third gear to rotate along a second direction.

Further, the first gear assembly comprises a first gear and a screw, the first gear comprises a first surface and a second surface, the second surface is opposite to the first surface, a containing groove extending from the first surface to the second surface is formed in the first gear, the containing groove is used for containing the second gear and the third gear, the screw is fixedly connected with the first gear on the second surface, and the screw comprises the second thread device.

Further, the pushing device comprises a driving member comprising a gear bar for meshing with the second gear.

Further, a first through hole and a second through hole are formed in the circumferential surface of the shell, the pushing device comprises a first body and a second body, the first end of the first body penetrates through the first through hole to enter the hollow part, the second end of the first body is exposed out of the shell at the first through hole, the first end of the first body is rotationally connected with the driving piece, the first end of the second body penetrates through the second through hole to enter the hollow part, and the second end of the second body is exposed out of the shell at the second through hole.

Further, the pushing device comprises an elastic piece, the elastic piece is arranged between the first body and the second body, a first end of the elastic piece is connected with the first body, and a second end of the elastic piece is connected with the second body.

Further, the pushing device further comprises a clamping piece extending outwards from the surface of the first end of the second body, and the diameter of the clamping piece is larger than that of the second through hole.

Further, the pushing device comprises a blocking piece, the blocking piece is fixedly arranged on the hollow part, and the blocking piece is used for driving the driving piece to rotate relative to the first body, so that a gear strip of the driving piece is out of engagement with the second gear.

Further, the supporting device further comprises a rotation limiting piece, wherein the rotation limiting piece is fixedly connected with the shell, is arranged between the shell and the supporting seat, and is in sliding connection with the supporting seat.

The supporting seat is sleeved in the shell through the opening, the first thread device and the second thread device are mutually matched, so that the transmission mechanism drives the shell to move towards the supporting seat or move away from the supporting seat to adjust the height of the supporting device, and therefore the height of the supporting device can be adjusted.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, 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 supporting device according to a preferred embodiment of the present application.

FIG. 2A is a first cross-sectional schematic view of the support device shown in FIG. 1, taken along line A-A, wherein the support device is in a first state; fig. 2B is a second cross-sectional view of the support device of fig. 1 taken along line B-B, wherein the support device is in a first state.

Fig. 3 is a second cross-sectional schematic view of the support device shown in fig. 1, wherein the support device is in a second state.

Fig. 4 is a top view of the support device of fig. 1 in a first state.

Fig. 5 is a top view of the support device of fig. 1 in a third state.

Fig. 6 is a top view of the support device of fig. 1 in a fourth state.

The application will be further described in the following detailed description in conjunction with the above-described figures.

Description of the main reference signs

Support device 1

Housing 10

Support base 20

Transmission mechanism 30

Pushing device 40

Housing end 11

Opening 12

Hollow portion 13

First screw means 21

Second screw means 31

Support base end 22

Another support seat end 23

End face 24

Surface 14

First gear assembly 32

Second gear 33

Third gear 34

First gear 35

Screw 36

First surface 351

Second surface 352

Containing groove 353

Inner wall 354

Teeth 355

Support frame 37

Support arm 371

Suspension arm 372

Drive member 41

Gear strip 411

Second driving member 42

Second gear bar 421

Circumferential surface 101

First through hole 15

Second through hole 16

First body 43

Second body 44

Elastic member 45

Catch 46

First catch 47

Stop 48

Second blocking member 49

First substrate 412

First abutting plate 413

Second substrate 422

Second supporting plate 423

Rotation limiting member 50

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without any inventive effort, are within the scope of the present application.

FIG. 1 is a schematic view of a supporting device according to a preferred embodiment of the present application. Fig. 2A is a first cross-sectional schematic view of the support device shown in fig. 1, taken along line A-A, wherein the support device is in a first state. Fig. 2B is a second cross-sectional view of the support device shown in fig. 1, taken along line B-B, wherein the support device 1 is in a first state. The support device 1 can be adjusted in its height. The supporting device 1 comprises a shell 10, a supporting seat 20, a transmission mechanism 30 and a pushing device 40. The housing end 11 of the housing 10 is formed with an opening 12 and includes a hollow portion 13. The supporting seat 20 is sleeved in the shell 10 through the opening 12, and the supporting seat 20 comprises a first thread device 21. The transmission mechanism 30 is accommodated in the hollow portion 13. The transmission mechanism 30 comprises a second screw means 31, and the second screw means 31 is screwed with the first screw means 21. The pushing device 40 is movably connected with the housing 10. The pushing device 40 is used for driving the transmission mechanism 30 to rotate, and the second screw device 31 and the first screw device 21 cooperate with each other, so that the transmission mechanism 30 drives the housing 10 to move towards the supporting seat 20 or move away from the supporting seat 20 to adjust the height of the supporting device 1. In this embodiment, the first screw means 21 is a threaded hole, and the second screw means 31 is an external screw. In other embodiments, the first screw means 21 is an external screw thread and the second screw means 31 is a threaded hole. In this embodiment, the threaded hole is a blind hole. In other embodiments, the threaded hole is a through hole. In the present embodiment, the height of the supporting device 1 is adjusted by moving the housing 10 toward the supporting seat 20 or away from the supporting seat 20 so that the total height of the housing 10 and the supporting seat 20 is changed.

In this embodiment, the housing 10 is cylindrical. The support base 20 is generally cylindrical. The support base 20 includes a base end 22. The supporting seat 20 is sleeved in the casing 10 through the supporting seat end 22 of the supporting seat 20 and the opening 12. Specifically, the support base 20 is sleeved in the housing 10 through the support base end 22 passing through the opening 12. The support seat end 22 of the support seat 20 comprises the first screw means 21. The support base 20 further comprises a further support base end 23. In this embodiment, the end face 24 of the other support base end 23 of the support base 20 is flush with the surface 14 of the housing 10 at the opening 12. In other embodiments, the surface 14 of the housing 10 at the opening 12 is located at an intermediate position of the support base 20.

In this embodiment, the transmission mechanism 30 includes a first gear assembly 32 and a second gear 33. The first gear assembly 32 is movably connected to the housing 10, and the first gear assembly 32 includes the second screw means 31. The second gear 33 is rotatably connected to the housing 10, and the second gear 33 is meshed with the first gear assembly 32. The pushing device 40 is configured to drive the second gear 33 to rotate in the first direction. In this embodiment, the first direction is clockwise. In other embodiments, the first direction is a counterclockwise direction. In this embodiment, if the second gear 33 rotates along the first direction, the first gear assembly 32 drives the second screw device 31 and the first screw device 21 to cooperate with each other, so that the transmission mechanism 30 drives the housing 10 to move away from the supporting seat 20, so as to adjust the height of the supporting device 1 to be higher (as shown in fig. 3).

In this embodiment, the transmission mechanism 30 includes a third gear 34. The third gear 34 is rotatably connected to the housing 10. The third gear 34 is meshed with the first gear assembly 32. The pushing device 40 is used for driving the third gear 34 to rotate along the second direction. In this embodiment, the second direction is a counterclockwise direction. In other embodiments, the second direction is a clockwise direction. In this embodiment, if the third gear 34 rotates along the second direction, the second screw device 31 and the first screw device 21 cooperate with each other so that the transmission mechanism 30 drives the housing 10 to move toward the supporting seat 20, so as to adjust the height of the supporting device 1 to be shorter.

In this embodiment, the first gear assembly 32 includes a first gear 35 and a screw 36. The first gear 35 includes a first surface 351 and a second surface 352, the second surface 352 being opposite the first surface 351. The first gear 35 is formed with a receiving groove 353 extending from the first surface 351 to the second surface 352, and the receiving groove 353 is configured to receive the second gear 33 and the third gear 34. The screw 36 is fixedly connected to the first gear 35 at the second surface 352. The screw 36 comprises the second screw means 31. In this embodiment, the first gear 35 is a cylindrical gear. The first gear 35 is provided with teeth 355 at an inner wall 354 of the receiving groove 353. The first gear 35 is engaged with the second gear 33 and the third gear 34 through the teeth 355. In this embodiment, the first gear assembly 32 has a T-shaped cross section.

In this embodiment, the transmission mechanism 30 includes a support 37. The second gear 33 and the third gear 34 are respectively rotatably connected with the housing 10 through the supporting frame 37. The support 37 includes a support arm 371 and a suspension arm 372. The support arm 371 is fixedly connected to the housing 10 and is disposed in the hollow portion 13. The suspension arm 372 extends from the support arm 371 toward the first surface 351 of the first gear 35. The second gear 33 and the third gear 34 are respectively and fixedly connected to one end of the suspension arm 372 away from the support arm 371, and are accommodated in the accommodating groove 353.

In this embodiment, referring to fig. 4, the pushing device 40 includes a driving member 41, and the driving member 41 includes a gear rack 411, and the gear rack 411 is configured to mesh with the second gear 33. In fig. 4, only a portion of the teeth of the gear rack 411 are illustrated, and it is apparent that the gear rack 411 of the present case is not limited to include the teeth shown in fig. 4, but may include more teeth. In this embodiment, the pushing device 40 includes not only the driving member 41 engaged with the second gear 33 but also the driving member 41 engaged with the third gear 34. For convenience of detailed description of the present application, in the following description, the driving member 41 engaged with the second gear 33 is referred to as a first driving member, and the driving member engaged with the third gear 34 is referred to as a second driving member. In this embodiment, the pushing device 40 further includes a second driving member 42, where the second driving member 42 includes a second gear rack 421, and the second gear rack 421 of the second driving member 42 is configured to mesh with the third gear 34. In fig. 4, only a part of the teeth of the second gear rack 421 is illustrated, and it is obvious that the second gear rack 421 of the present case is not limited to include only the teeth illustrated in fig. 4, but may include more teeth.

In the present embodiment, the housing 10 has a first through hole 15 and a second through hole 16 formed in a circumferential surface 101 thereof. The pushing device 40 includes a first body 43 and a second body 44. A first end of the first body 43 passes through the first through hole 15 and enters the hollow portion 13, and a second end of the first body 43 is exposed to the housing 10 at the first through hole 15. The first end of the first body 43 is rotatably connected to the first driving member. The first end of the second body 44 passes through the second through hole 16 and enters the hollow portion 13, and the second end of the second body 44 is exposed to the housing 10 at the second through hole 16. The first end of the second body 44 is rotatably connected to the second driving member 42. In this embodiment, the first end of the first body 43 is rotatably connected to the first driving member through a hinge, and the first end of the second body 44 is rotatably connected to the second driving member 42 through a hinge, so that if the first driving member and the second driving member 42 rotate relative to the first body 43 and the second body 44 respectively under the action of an external force, the first driving member and the second driving member 42 can be reset under the action of the hinge when the external force is released. Obviously, the first body 43 and the first driving member and the second body 44 and the second driving member 42 are not limited to being rotatably connected by a hinge, but may be rotatably connected by other means, such as by a return spring, etc., so that the first driving member and the second driving member 42 can be automatically reset.

In this embodiment, the pushing device 40 includes an elastic member 45. In this embodiment, the elastic member 45 is a spring. The elastic member 45 is disposed between the first body 43 and the second body 44. The first end of the elastic member 45 is connected to the first body 43, and the second end of the elastic member 45 is connected to the second body 44. The elastic member 45 is configured to provide a restoring force to the first body 43 and/or the second body 44. Therefore, the first body 43 and the second body 44 can return to the initial state under the restoring force of the elastic member 45, and can be continuously acted by the external force to continuously adjust the height of the supporting device 1 to be higher and/or continuously adjust the height of the supporting device 1 to be lower.

In this embodiment, the pushing device 40 further includes a catch 46, where the catch 46 extends outwardly from a surface of the first end of the second body 44, and the diameter of the catch 46 is larger than the diameter of the second through hole 16. In this embodiment, the pushing device 40 includes not only a catch 46 extending outwardly from the surface of the first end of the second body 44, but also a catch 46 extending outwardly from the surface of the first end of the first body 43. For convenience of detailed description, in the following description, the catching member extending outwardly from the surface of the first end of the first body 43 is referred to as a first catching member 47, and the catching member 46 extending outwardly from the surface of the first end of the second body 44 is referred to as a second catching member. In this embodiment, the pushing device 40 further includes the first catch 47, where the first catch 47 extends outward from the surface of the first end of the first body 43, and the diameter of the first catch 47 is larger than the diameter of the first through hole 15. Thus, the first body 43 can move only a first predetermined distance with respect to the housing 10 in the first through hole 15, the second body 44 can move only a second predetermined distance with respect to the housing 10 in the second through hole 16, and the first body 43 or the second body 44 compresses the elastic member 45 when the external force is continuously applied to the first body 43 or the second body 44. The second preset distance may be equal to or unequal to the first preset distance.

In this embodiment, the pushing device 40 includes a stop 48. The blocking member 48 is fixedly provided to the hollow portion 13. The blocking member 48 is configured to drive the driving member 41 to rotate relative to the first body 43, so that the gear rack 411 of the driving member 41 is disengaged from the second gear 33. In this embodiment, the pushing device 40 includes not only the blocking member 48 for driving the driving member 41 to rotate relative to the first body 43, but also the blocking member 48 for driving the driving member 41 to rotate relative to the second body 44. For convenience of detailed description, in the following description, the blocking member 48 for driving the first driving member to rotate with respect to the first body 43 is referred to as a first blocking member, and the blocking member for driving the second driving member 42 to rotate with respect to the second body 44 is referred to as a second blocking member. In this embodiment, the pushing device 40 further includes the second blocking member 49, and the second blocking member 49 is fixedly disposed on the hollow portion 13. The second blocking member 49 is configured to drive the second driving member 42 to rotate relative to the second body 44, such that the second gear bar 421 of the second driving member 42 is disengaged from the third gear 34. In this embodiment, the first blocking member and the second blocking member 49 extend from the inner wall of the housing 10 toward the axial center of the housing 10 and are isolated from each other. In the present embodiment, the distance from the second driving member 42 to the position of the housing 10 at the second through hole 16 is smaller than the distance from the first driving member to the first blocking member, and the distance from the first driving member to the position of the housing 10 at the first through hole 15 is smaller than the distance from the second driving member 42 to the second blocking member 49.

In this embodiment, the first driving member includes a first substrate 412 and a first supporting plate 413, and the second driving member 42 includes a second substrate 422 and a second supporting plate 423. Each substrate 412, 422 is rotatably coupled to a distal end of the first body 43 or the second body 44. In this embodiment, the length of each substrate 412, 422 is greater than the diameter of the first body 43 or the second body 44. Thus, when the first body 43 or the second body 44 moves under the action of external force, each substrate 412, 422 abuts against the first blocking member or the second blocking member 49 earlier than the first body 43 or the second body 44, and is driven to rotate by the first blocking member or the second blocking member 49. The first supporting plate 413 is fixedly connected to the first substrate 412, and the second supporting plate 423 is fixedly connected to the second substrate 422. In the present embodiment, each of the holding plates 413, 423 is provided with the gear strip 411, 421 on a face close to the second gear 33 or the third gear 34. In the present embodiment, the distance between the second substrate 422 of the second driving member 42 and the position of the housing 10 at the second through hole 16 is smaller than the distance between the first substrate 412 of the first driving member and the first blocking member, and the distance between the first substrate 412 of the first driving member and the position of the housing 10 at the first through hole 15 is smaller than the distance between the second substrate 422 of the second driving member 42 and the second blocking member 49. In the present embodiment, in the initial state, one end of each gear rack 411, 421 away from the first body 43 or the second body 44 is engaged with the second gear 33 or the third gear 34.

In this embodiment, the support device 1 further includes a rotation limiting member 50, where the rotation limiting member 50 is fixedly connected to the housing 10, disposed between the housing 10 and the support base 20, and slidably connected to the support base 20. In this embodiment, the rotation limiting member 50 is cylindrical or bar-shaped. In this embodiment, the rotation limiting member 50 has a height equal to the height of the screw 36. The rotation limiting member 50 is used for limiting the rotation of the support base 20. In this embodiment, the rotation limiting member 50 and the first blocking member are disposed on two opposite sides of the first gear 35, respectively, and the rotation limiting member 50 and the second blocking member 49 are disposed on two opposite sides of the first gear 35, respectively. Wherein at least one of the rotation limiter 50 and the first blocking member is spaced apart from the first gear 35 and at least one of the rotation limiter 50 and the second blocking member 49 is spaced apart from the first gear 35. So that the rotation limiting member 50 and the first blocking member, and/or the rotation limiting member 50 and the second blocking member 49 can limit the moving distance of the first gear 35.

When it is necessary to raise the height of the supporting device 1, an external force is applied to the second end of the first body 43, and the first body 43 moves in a third direction, as indicated by a dotted arrow 1 in fig. 4. In this embodiment, the third direction is from left to right, or from front to back. In other embodiments, the third direction is from right to left, or back to front. The first body 43 compresses the elastic member 45. The first body 43 drives the first driving member to move along the third direction, as indicated by the dashed arrow 2 in fig. 4. The first driving member drives the second gear 33 to rotate in the first direction by the gear rack 411 of the first driving member, as indicated by the dashed arrow 3 in fig. 4. The first gear 35 is rotated by the second gear 33 in the first direction as well, as indicated by the dashed arrow 4 in fig. 4. At this time, the screw 36 is driven by the first gear 35 to rotate along the first direction, and the screw 36 drives the first gear 35 to move away from the support base 20 because the support base 20 is limited to rotate, and the housing 10 is driven by the first gear 35 to move away from the support base 20, so that the total height of the housing 10 and the support base 20 becomes high, thereby adjusting the height of the supporting device 1 to become high.

At the same time, the third gear 34 is driven by the first gear 35 to also follow the second gear 33 to rotate in the first direction, as indicated by the dashed arrow 5 in fig. 4. The second body 44 moves along the third direction under the action of the second gear 421 of the second driving member 42 and the elastic member 45, as indicated by the dashed arrow 6 in fig. 4, until the second gear 421 of the second driving member 42 is disengaged from the third gear 34. When an external force is continuously applied to the second end of the first body 43, the height of the supporting device 1 is continuously increased, and the second body 44 moves along the third direction under the action of the elastic member 45 until the clamping member 46 abuts against the inner wall of the housing 10 at the second through hole 16. At this time, external force is continuously applied to the second end of the first body 43, the height of the supporting device 1 is continuously increased, and the first body 43 compresses the elastic member 45, so that the elastic member 45 deforms until the first substrate 412 of the first driving member abuts against the first blocking member, as shown in fig. 5. At this time, the first substrate 412 rotates along the second direction relative to the first body 43, so as to drive the gear rack 411 of the first driving member to rotate along the second direction. The gear rack 411 of the first driving member is disengaged from the second gear 33 as shown in fig. 6. The first body 43 and the second body 44 return to the initial state under the restoring force of the elastic member 45. So that the first body 43 can be continuously acted upon by an external force to continuously adjust the height of the supporting device 1 to become high.

When it is desired to shorten the height of the supporting device 1, an external force is applied to the second end of the second body 44, and the second body 44 moves in the fourth direction. In this embodiment, the fourth direction is from right to left, or from back to front. In other embodiments, the fourth direction is from left to right, or front to back. The second body 44 compresses the elastic member 45. The second body 44 drives the second driving member 42 to move along the fourth direction. The second driving member 42 drives the third gear 34 to rotate in the second direction through the second gear rack 421 of the second driving member 42. The first gear 35 is driven by the third gear 34 to rotate in the second direction. At this time, the screw 36 is driven by the first gear 35 to rotate along the second direction, and the screw 36 drives the first gear 35 to move toward the support base 20 because the support base 20 is limited to rotate, and the housing 10 is driven by the first gear 35 to move toward the support base 20, so that the total height of the housing 10 and the support base 20 is shortened, and the height of the supporting device 1 is adjusted to be shortened.

Meanwhile, the second gear 33 is driven by the first gear 35 to also rotate along the second direction along with the third gear 34, and the first body 43 is driven by the gear strip 411 of the first driving member and moves along the fourth direction under the action of the elastic member 45 until the gear strip 411 of the first driving member is separated from the second gear 33. When external force is continuously applied to the second end of the second body 44, the height of the supporting device 1 is continuously reduced, and the first body 43 moves along the fourth direction under the action of the elastic member 45 until the first clamping member 47 of the first body 43 abuts against the inner wall of the housing 10 at the first through hole 15. At this time, external force is continuously applied to the second end of the second body 44, the height of the supporting device 1 is continuously reduced, and the second body 44 compresses the elastic member 45, so that the elastic member 45 deforms until the second substrate 422 of the second driving member 42 abuts against the second blocking member 49. At this time, the second substrate 422 of the second driving member 42 rotates along the first direction relative to the second body 44, so as to drive the second gear 421 of the second driving member 42 to rotate along the first direction. The second gear bar 421 of the second driving member 42 is disengaged from the third gear 34. The second body 44 and the first body 43 return to the initial state under the restoring force of the elastic member 45. So that the second body 44 can be continuously acted on by external force to continuously adjust the height of the supporting device 1 to be shorter.

The supporting seat 20 is sleeved in the shell 10 through the opening 12; the second screw device 31 is matched with the first screw device 21 so that the transmission mechanism 30 drives the shell 10 to move towards the supporting seat 20 or move away from the supporting seat 20 to adjust the height of the supporting device 1; the first body 43 is exposed out of the shell 10 at the first through hole 15, and the second body 44 is exposed out of the shell 10 at the second through hole 16, so that the operation of a user is facilitated; the first gear assembly 32 and the second gear 33 move the housing 10 away from the support base 20, and the first gear assembly 32 and the third gear 34 move the housing 10 toward the support base 20; limiting the moving distance of the first body 43 and the second body 44 by the first clamping member 47 and the second clamping member respectively, so that the elastic member 45 can be compressed to provide restoring force; the first blocking member drives the first driving member to rotate, so that the gear strip 411 of the first driving member is disengaged from the second gear 33, and thus the first body 43 can return to the initial state under the action of the restoring force of the elastic member 45, and the first body 43 can be further operated to raise the height of the supporting device 1; the second blocking member 49 drives the second driving member 42 to rotate, so that the second gear bar 421 of the second driving member 42 is disengaged from the third gear 34, and the second body 44 can return to the initial state under the restoring force of the elastic member 45, and the second body 44 can be further operated to lower the height of the supporting device 1.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The above-described embodiments of the application are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A support device comprising a housing, characterized in that:

the support device further includes:

the transmission mechanism is accommodated in the hollow part;

a pushing device movably connected with the shell,

the transmission mechanism comprises a first gear assembly and a second gear, the first gear assembly is movably connected with the shell, the first gear assembly comprises a second thread device, the second thread device is in threaded connection with the first thread device, the second gear is rotatably connected with the shell, the second gear is meshed with the first gear assembly, the pushing device is used for driving the second gear to rotate along a first direction, and then the second thread device is mutually matched with the first thread device so that the transmission mechanism drives the shell to move to adjust the height of the supporting device.

2. The support device of claim 1, wherein:

the transmission mechanism comprises a third gear, the third gear is rotationally connected with the shell, the third gear is meshed with the first gear assembly, and the pushing device is used for driving the third gear to rotate along a second direction.

3. The support device of claim 2, wherein:

the first gear assembly comprises a first gear and a screw, the first gear comprises a first surface and a second surface, the second surface is opposite to the first surface, a containing groove extending from the first surface to the second surface is formed in the first gear, the containing groove is used for containing the second gear and the third gear, the screw is fixedly connected with the first gear on the second surface, and the screw comprises the second thread device.

4. The support device of claim 1, wherein:

the pushing device comprises a driving member comprising a gear bar for meshing with the second gear.

5. The support device of claim 4, wherein:

the pushing device comprises a first body and a second body, wherein the first end of the first body penetrates through the first through hole to enter the hollow part, the second end of the first body is exposed out of the shell at the first through hole, the first end of the first body is rotationally connected with the driving piece, the first end of the second body penetrates through the second through hole to enter the hollow part, and the second end of the second body is exposed out of the shell at the second through hole.

6. The support device of claim 5, wherein:

the pushing device comprises an elastic piece, the elastic piece is arranged between the first body and the second body, the first end of the elastic piece is connected with the first body, and the second end of the elastic piece is connected with the second body.

7. The support device of claim 6, wherein:

the pushing device further comprises a clamping piece which extends outwards from the surface of the first end of the second body, and the diameter of the clamping piece is larger than that of the second through hole.

8. The support device of claim 5, wherein:

the pushing device comprises a blocking piece, the blocking piece is fixedly arranged in the hollow part, and the blocking piece is used for driving the driving piece to rotate relative to the first body, so that a gear strip of the driving piece is separated from engagement with the second gear.

9. The support device of claim 1, wherein:

the supporting device further comprises a rotation limiting piece, wherein the rotation limiting piece is fixedly connected with the shell, is arranged between the shell and the supporting seat, and is in sliding connection with the supporting seat.