Lifting device

Abstract

The utility model belongs to the technical field of electronic equipment lifting, and discloses a lifting device which comprises a base, a driving piece, a transmission assembly, a guide column, a movable table, a first elastic piece, an abutting piece and a second elastic piece. The worm gear is arranged at the output end of the driving part and meshed with the periphery of the transmission column, the movable table is connected with the transmission column, the guide column is separated from the screw, the movable table is provided with a guide hole corresponding to the guide column, the first elastic part is connected with the base and the movable table, and the abutting part is connected with the movable table. The second elastic piece is connected with the guide column and the abutting piece, the second elastic piece can enable the movable table to be close to the screw rod in the radial direction, and the lifting device can solve the problems that due to the fact that a gap exists between the lead screw and the nut, lifting precision is not accurate, axial impact and radial impact are generated during operation of the lead screw and the nut, and the service life of the lifting device is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment lifting technical field especially, relate to a lifting device. BACKGROUND

[0002] Lifting device is widely used in many fields, for example, mobile phone telescopic camera, lifting loudspeaker and electronic equipment with lifting demand. The existing lifting device is mostly through screw nut cooperation to realize lifting, because there is machining precision and cooperation tolerance between screw and nut, there is gap between screw nut, so it will affect the lifting precision of lifting device, and further affect the use experience of using lifting device equipment. At the same time, screw and nut have long-term gap during operation, axial impact and radial impact are generated when the two run, which affects the service life of lifting device.

[0003] Therefore, a lifting device is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of lifting device, can solve the problem that due to the gap between screw and nut, the lifting precision of existing lifting device is inaccurate, and axial impact and radial impact are generated when screw and nut run, which affects the service life of lifting device.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A kind of lifting device, comprising:

[0007] Base;

[0008] Driving part, the driving part is fixed on the base;

[0009] Transmission assembly, including worm wheel, screw rod and transmission column, the screw rod is vertically fixed to the base, the transmission column is sleeved on the outer periphery of the screw rod and is in threaded connection with the screw rod, the worm wheel is placed in the output end of the driving part, and the worm wheel is engagedly connected with the outer periphery of the transmission column;

[0010] Guide column and movable platform, the movable platform is connected with the transmission column, the guide column is arranged apart from the screw rod, the movable platform is provided with guide hole, and the guide hole is arranged correspondingly with the guide column;

[0011] First elastic member, the first elastic member connects the base and the movable platform;

[0012] Abutting member and second elastic member, the abutting member is connected with the movable platform, and the abutting member is spaced apart from the guide column, the second elastic member is connected between the guide column and the abutting member, and the second elastic member can make the movable platform approach the screw rod in radial direction.

[0013] As the preferred technical scheme of the lifting device, the movable table is provided with a through hole, the through hole is communicated with the guide hole, the abutting piece blocks the through hole, the second elastic piece is arranged in the through hole and connected with the guide column and the abutting piece.

[0014] As the preferred technical scheme of the lifting device, the lifting device comprises at least two guide columns, and the movable table comprises at least two guide holes, the guide holes correspond to the guide columns one by one.

[0015] As the preferred technical scheme of the lifting device, the lifting device further comprises a sliding bearing, an inner ring of the sliding bearing is sleeved on an outer periphery of the guide column, and an outer ring of the sliding bearing is fixed with an inner wall of the guide hole.

[0016] As the preferred technical scheme of the lifting device, each guide hole is provided with two sliding bearings in correspondence, and the two sliding bearings are arranged in the guide hole in a spaced manner.

[0017] As the preferred technical scheme of the lifting device, both ends of the first elastic piece are provided with hooks, the side wall of the base and the side wall of the movable table are provided with protruding columns, and the hooks are hooked on the outer periphery of the protruding columns.

[0018] As the preferred technical scheme of the lifting device, the outer periphery of the protruding column is provided with an annular groove, and the hook is hooked in the annular groove.

[0019] As the preferred technical scheme of the lifting device, the first elastic piece and the second elastic piece are both springs.

[0020] As the preferred technical scheme of the lifting device, the movable table is provided with an avoiding groove, the avoiding groove is provided with a through hole, the screw rod is arranged in the through hole, and the transmission column is arranged in the avoiding groove.

[0021] As the preferred technical scheme of the lifting device, the avoiding groove is arranged at a corner position of the movable table.

[0022] The beneficial effects of the utility model are as follows:

[0023] The lifting device provided by this utility model connects a first elastic element between the movable platform and the base. When the transmission column rises along the screw, the first elastic element causes the movable platform to be subjected to a counterforce. Since the movable platform is connected to the transmission column, the transmission column is always subjected to a counterforce during its ascent along the screw. This ensures that the transmission column and the screw are always engaged axially, eliminating axial clearance between them and preventing axial impact during operation. Furthermore, by providing a stop member on the movable platform and connecting a second elastic element between the guide column and the stop member, the second elastic element allows the movable platform to move radially closer to the screw. This ensures that the transmission column is always engaged radially with the screw, eliminating radial clearance and preventing radial impact during operation. By incorporating the first and second elastic elements, the axial and radial clearances between the screw and the transmission column during operation are eliminated, ensuring the lifting accuracy of the lifting device and improving the user experience. It can also prevent axial and radial impacts between the screw and the transmission column during operation, thereby improving the service life of the lifting device. Attached Figure Description

[0024] Fig. 1 This is a first-view structural schematic diagram of the lifting device provided by this utility model;

[0025] Fig. 2 This is a second-view structural schematic diagram of the lifting device provided by this utility model;

[0026] Fig. 3 This is a cross-sectional schematic diagram of the lifting device provided by this utility model;

[0027] Fig. 4 This is a schematic diagram of the structure of the movable platform of the lifting device provided by this utility model.

[0028] In the picture:

[0029] 1. Base; 2. Drive unit;

[0030] 3. Transmission assembly; 31. Worm gear; 32. Screw; 33. Transmission column;

[0031] 4. Guide post; 5. Movable platform; 51. Guide hole; 52. Through hole; 53. Clearance groove; 531. Through hole; 6. First elastic element; 61. Hook; 7. Abutment element; 8. Second elastic element; 9. Sliding bearing; 10. Protruding post. Detailed Implementation

[0032] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0036] As Figs. 1 to 4As shown in the middle, the embodiment provides a lifting device, including base 1, drive 2, transmission assembly 3, guide column 4, movable table 5, first elastic member 6, abutting member 7 and second elastic member 8, drive 2 is fixed on base 1, transmission assembly 3 includes worm gear 31, screw 32 and transmission column 33, screw 32 is vertically fixed on base 1, transmission column 33 is sleeved on the outer periphery of screw 32 and is in threaded connection with screw 32, worm gear 31 is arranged on the output end of drive 2, and worm gear 31 is in meshing connection with the outer periphery of transmission column 33. When drive 2 operates to drive worm gear 31 to move, transmission column 33 will move up and down along screw 32. Movable table 5 is connected with transmission column 33, and when transmission column 33 moves up and down along screw 32, movable table 5 will be driven to move up and down. Guide column 4 is arranged apart from screw 32, movable table 5 is provided with guide hole 51, and guide hole 51 is arranged correspondingly with guide column 4. In this way, when transmission column 33 drives movable table 5 to move up and down, guide column 4 plays a guiding role in the up and down movement of movable table 5, avoiding large deflection of movable table 5 during the up and down movement, so that the up and down movement of movable table 5 is more stable.

[0037] First elastic member 6 connects base 1 and movable table 5, when transmission column 33 rises along screw 32, first elastic member 6 will make movable table 5 receive a force in the opposite direction, movable table 5 is connected with transmission column 33, and then transmission column 33 will always receive a force in the opposite direction during the rising along screw 32, so that transmission column 33 and screw 32 are always in meshing in the axial direction, eliminating the gap between screw 32 and transmission column 33 in the axial direction, avoiding axial impact of screw 32 and transmission column 33 during operation. Abutting member 7 is connected with movable table 5 and is apart from guide column 4, second elastic member 8 is connected between guide column 4 and abutting member 7, at this time, whether second elastic member 8 is in compression state or tension state, movable table 5 can approach screw 32 in different directions in the radial direction, realizing that second elastic member 8 can make movable table 5 approach screw 32 in the radial direction, under the action of second elastic member 8, transmission column 33 and screw 32 can always be in meshing in the radial direction, eliminating the gap between screw 32 and transmission column 33 in the radial direction, avoiding radial impact of screw 32 and transmission column 33 during operation.

[0038] In the embodiment, movable table 5 is provided with through hole 52, through hole 52 is communicated with guide hole 51, abutting member 7 blocks through hole 52, second elastic member 8 is arranged in through hole 52 and connects guide column 4 and abutting member 7, so that it is more convenient to assemble second elastic member 8, reducing the assembly difficulty of lifting device. The arrangement of through hole 52 can avoid the disorder of second elastic member 8, further improving the rationality of the design of lifting device.

[0039] In the embodiment, drive 2 can be selected from one of synchronous motor, asynchronous motor or servo motor, as long as it can drive worm gear 31 to rotate, which is not limited here.

[0040] Preferably, the lifting device comprises at least two guide columns 4, the movable table 5 comprises at least two guide holes 51, and the guide holes 51 correspond to the guide columns 4 one by one. By arranging multiple guide columns 4, the stability of the lifting device during lifting can be further improved, and the use experience of the lifting device can be improved.

[0041] In this embodiment, the lifting device further comprises sliding bearings 9, the sliding bearings 9 are sleeved on the outer periphery of the guide columns 4, and the outer rings of the sliding bearings 9 are fixed to the inner walls of the guide holes 51. The arrangement of the sliding bearings 9 can further improve the stability of the movable table 5 during lifting, and can also reduce the frictional damage to the outer peripheral surface of the guide column 4 during lifting of the movable table 5, thereby prolonging the service life of the guide column 4. Further, two sliding bearings 9 are arranged corresponding to each guide hole 51, and the two sliding bearings 9 are arranged separately in the guide hole 51, that is, two sliding bearings 9 are sleeved on each guide column 4, which can further improve the stability of the lifting of the movable table 5. Specifically, the two sliding bearings 9 are arranged at the top and bottom of the guide hole 51, respectively, which facilitates the assembly of the staff. For example, the guide hole 51 comprises a first hole, a second hole and a third hole which are in communication with each other, wherein the diameter of the first hole is consistent with the diameter of the third hole, and the diameter of the first hole is greater than the diameter of the second hole. The two sliding bearings 9 are arranged in the first hole and the third hole, respectively, which facilitates the assembly of the two sliding bearings 9, and makes the design of the movable table 5 more reasonable.

[0042] Preferably, the two ends of the first elastic member 6 are provided with hooks 61, the side walls of the base 1 and the movable table 5 are provided with protruding columns 10, and the hooks 61 are hooked on the outer periphery of the protruding columns 10. The arrangement of the hooks 61 facilitates the assembly of the first elastic member 6 by the staff, and improves the assembly efficiency of the lifting device. Further, the outer periphery of the protruding column 10 is provided with an annular groove, and the hook 61 is hooked in the annular groove, which can avoid the deflection of the hook 61, and stably connect the movable table 5 and the base 1.

[0043] In this embodiment, the first elastic member 6 and the second elastic member 8 can be selected as springs.

[0044] In this embodiment, the movable table 5 is provided with an avoiding groove 53, the avoiding groove 53 is provided with a through hole 531, the screw rod 32 penetrates the through hole 531, and the transmission column 33 is arranged in the avoiding groove 53. The arrangement of the avoiding groove 53 can realize the connection between the movable table 5 and the transmission column 33, and can make the layout of the movable table 5 and the transmission assembly 3 more compact, and make the lifting device more miniaturized. Further, the avoiding groove 53 is arranged at the corner position of the movable table 5, which facilitates the assembly of the transmission assembly 3 and the movable table 5, reduces the assembly difficulty of the staff, and makes the design of the lifting device more reasonable.

[0045] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A lifting device, characterized in that The lifting device comprises a base (1), a driving member (2) fixedly arranged on the base (1), a transmission assembly (3) comprising a worm gear (31), a screw rod (32) and a transmission column (33), the screw rod (32) being vertically fixed to the base (1), the transmission column (33) being sleeved on the outer periphery of the screw rod (32) and being threadedly connected with the screw rod (32), the worm gear (31) being arranged on the output end of the driving member (2), the worm gear (31) being meshingly connected with the outer periphery of the transmission column (33), a guide column (4) and a movable table (5), the movable table (5) being connected with the transmission column (33), the guide column (4) being arranged apart from the screw rod (32), the movable table (5) being provided with a guide hole (51), the guide hole (51) being correspondingly arranged with the guide column (4), a first elastic member (6) connecting the base (1) and the movable table (5), an abutting member (7) and a second elastic member (8), the abutting member (7) being connected with the movable table (5) and being arranged apart from the guide column (4), the second elastic member (8) being connected between the guide column (4) and the abutting member (7), the second elastic member (8) being capable of enabling the movable table (5) to approach the screw rod (32) in the radial direction. The movable table (5) is provided with a through hole (52), the through hole (52) being communicated with the guide hole (51), the abutting member (7) being sealed to the through hole (52), the second elastic member (8) being arranged in the through hole (52) and connecting the guide column (4) and the abutting member (7). The lifting device comprises at least two guide columns (4), the movable table (5) comprising at least two guide holes (51), the guide holes (51) corresponding to the guide columns (4) one by one. The lifting device further comprises a sliding bearing (9), the inner ring of the sliding bearing (9) being sleeved on the outer periphery of the guide column (4), the outer ring of the sliding bearing (9) being fixed to the inner wall of the guide hole (51). Each guide hole (51) is correspondingly provided with two sliding bearings (9), the two sliding bearings (9) being arranged apart in the guide hole (51). Both ends of the first elastic member (6) are provided with hooks (61), the side wall of the base (1) and the side wall of the movable table (5) are provided with protruding columns (10), the hooks (61) being hooked on the outer periphery of the protruding columns (10). The outer periphery of the protruding column (10) is provided with an annular groove, the hooks (61) being hooked in the annular groove.

2. The lift device of claim 1, wherein, The first elastic member (6) and the second elastic member (8) are both springs.

3. The lift device of claim 1, wherein, The movable table (5) is provided with an avoiding groove (53), the avoiding groove (53) being provided with a through hole (531), the screw rod (32) being arranged in the through hole (531), the transmission column (33) being arranged in the avoiding groove (53).

4. The lift device of claim 1, wherein, The avoiding groove (53) is arranged at the corner position of the movable table (5).

5. The lift device of claim 4, wherein, ​ 6. The lift device of claim 1, wherein, ​ 7. The lift device of claim 6, wherein, ​ 8. The lift device of claim 1, wherein, ​ 9. The lift device of claim 1, wherein, ​ 10. The lift device of claim 9, wherein, ​

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