Electric lifting turnover mechanism

Abstract

The utility model provides an electric lifting turnover mechanism which comprises an outer frame, an outer sleeve is arranged in the outer frame in a sliding mode, an extension plate is arranged at one end of the outer sleeve, and a transmission plate is hinged to the extension plate. The inner connecting rod slides in the outer sleeve; the headrest mounting plate comprises a first fixing plate and a second fixing plate, an included angle is formed between the first fixing plate and the second fixing plate, and the first fixing plate is hinged to the inner connecting rod and the transmission plate; and the driving unit is arranged in the outer frame. According to the electric lifting turnover mechanism provided by the utility model, when the height and the angle of the back cushion need to be adjusted, the inner connecting rod is controlled by the driving unit to push the outer sleeve to slide on the outer frame, and under the linkage of the extension plate, the limiting block and the transmission plate, the two parallel headrest mounting plates are lifted and turned over at the same time; therefore, the height and the angle of the back cushion are automatically adjusted, and the comfort of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field, concretely related to a kind of electric lifting turnover mechanism. BACKGROUND

[0002] Turnover mechanism is to realize the turnover of object by multiple connecting rods or gear rack mechanism, to meet the use demand in life or production, in life, turnover mechanism is often set on seat, sofa or recliner and the like, to adjust the use angle of headrest, to improve the use comfort of user. But in present life, because the body of different people is different, the angle of headrest required by it is also different, the angle of headrest is often adjusted manually to lock, and the operation process needs to be adjusted several times to reach the most comfortable angle, so that the adjustment mode is more cumbersome, and the use experience of user is affected. SUMMARY

[0003] The utility model aims at solving the problem of not easy adjustment in view of the above-mentioned problems existing in prior art.

[0004] In order to realize the above-mentioned purpose, the utility model can be realized by the following technical scheme: an electric lifting turnover mechanism, comprising:

[0005] Outer frame, the outer sleeve is slidably arranged in the outer frame, one end of the outer sleeve is provided with an extension plate, the transmission plate is hingedly connected to the extension plate;

[0006] Inner connecting rod, the inner connecting rod is slidably arranged in the outer sleeve;

[0007] Headrest mounting plate, the headrest mounting plate comprises a first fixed plate and a second fixed plate forming an angle with the first fixed plate, the first fixed plate is hingedly connected with the inner connecting rod and the transmission plate respectively;

[0008] Drive unit, the drive unit is arranged in the outer frame, and the drive unit comprises a compression spring for pushing the outer sleeve, the inner connecting rod passes through the compression spring and the outer sleeve in sequence, the drive unit drives the outer sleeve and the inner connecting rod to slide in the outer frame, to control the transmission plate to link the headrest mounting plate to turn over;

[0009] Wherein, a reference surface perpendicular to the plane of the outer frame is constructed on the outer frame, and the reference surface is also parallel to the axis of the inner connecting rod, the transmission plate, the extension plate and the first fixed plate of the headrest mounting plate are all parallel to the reference surface.

[0010] In the utility model embodiment, the upper end of the inner connecting rod extends out of the outer sleeve and forms a flat limiting block, a first through hole is formed in the limiting block;

[0011] The second through hole is arranged on the extension plate;

[0012] The third through hole and the fourth through hole are sequentially arranged on the transmission plate;

[0013] The fifth through hole and the sixth through hole are arranged on the headrest mounting plate;

[0014] The rotating member is arranged at the connection position of the first through hole and the sixth through hole, the connection position of the second through hole and the fourth through hole, and the connection position of the third through hole and the fifth through hole.

[0015] In the embodiment of the utility model, the rotating member comprises a rod body and a limiting ring arranged at the end of the rod body, and the limiting ring and the rod body are provided with a mounting part.

[0016] In the embodiment of the utility model, the rod body is provided with a gasket arranged on the mounting part.

[0017] In the embodiment of the utility model, the driving unit comprises a sliding rail and a driving motor arranged on the sliding rail, and the output end of the driving motor is provided with a sliding block, the sliding rod is clamped on the sliding block, and the sliding rod is arranged on the sliding rail to slide, so as to drive the inner connecting rod and the outer sleeve to slide on the outer frame.

[0018] In the embodiment of the utility model, the sliding rod is provided with a second locking member for fixing the lower end of the inner connecting rod.

[0019] In the embodiment of the utility model, the lower end of the outer pipe sleeve is provided with a first locking member abutting against the compression spring.

[0020] In the embodiment of the utility model, the outer frame is provided with a guide bushing, the inner surface of the guide bushing is provided with a self-lubricating coating, and the outer sleeve slides on the guide bushing.

[0021] In the embodiment of the utility model, the outer frame is provided with a support seat supporting the driving unit.

[0022] In the embodiment of the utility model, the second fixing plate of the headrest mounting plate is provided with a first mounting hole and a second mounting hole.

[0023] Compared with the prior art, when the height and angle of the headrest need to be adjusted, the inner connecting rod pushes the outer sleeve to slide on the outer frame through the driving unit, and the two parallel headrest mounting plates are lifted and turned at the same time under the linkage of the extension plate, the limiting block and the transmission plate, so that the height and angle of the headrest are automatically adjusted, and the comfort of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the schematic diagram of the overall part assembly structure;

[0025] Figure 2 is the schematic diagram of the part explosion position structure on the outer frame;

[0026] Figure 3 is the schematic diagram of the part explosion position structure on the outer frame; Figure 2 is the enlarged view of A part in

[0027] Figure 4 is the schematic diagram of the structure of the mechanism for changing the direction and relative position of the headrest mounting plate during the turnover;

[0028] Figure 5 is the schematic diagram of the structure of the mechanism for turnover;

[0029] Figure 6 is the schematic diagram of the structure of the mechanism after the turnover to the maximum angle.

[0030] Explanation of reference signs:

[0031] 1, outer frame; 11, reference surface; 12, guide bush; 121, limiting plate; 13, side rod; 14, transverse rod; 15, support seat;

[0032] 2, inner connecting rod; 21, limiting block; 22, first through hole; 23, second locking member;

[0033] 3, compression spring;

[0034] 4, outer sleeve; 41, extension plate; 42, first locking member; 43, second through hole;

[0035] 5, transmission plate; 51, third through hole; 52, fourth through hole;

[0036] 6, headrest mounting plate; 61, first mounting hole; 62, second mounting hole; 63, fifth through hole; 64, sixth through hole; 65, first fixed plate; 66, second fixed plate; 67, bent groove;

[0037] 7, drive unit; 70, drive motor; 71, sliding block; 72, sliding rail; 73, sliding rod; 9, rotating member; 91, rod body; 92, gasket; 93, mounting portion; 94, limiting ring. DETAILED DESCRIPTION

[0038] For the purpose of facilitating the understanding of the present application, a more complete description of the present application will be provided with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described below. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive. Hereinafter, the directions such as "axial direction", "upper", "lower", and the like are provided to more clearly indicate the positional relationship of the structure, and are not a limitation on the present application. In the present application, the "vertical", "horizontal", and "parallel" are defined as including the case of ±10% on the basis of the standard definition. For example, vertical generally refers to an angle of 90 degrees with respect to a reference line, but in the present application, vertical refers to a case including 80 degrees to 100 degrees.

[0039] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the accompanying drawings.

[0040] As shown in the figure, an electric lifting and overturning mechanism comprises: Figures 1-6

[0041] An outer frame 1, an outer sleeve 4 is slidingly arranged in the outer frame 1, one end of the outer sleeve 4 is provided with an extension plate 41, and the extension plate 41 is hingedly connected with a transmission plate 5;

[0042] An inner connecting rod 2, the inner connecting rod 2 is slidingly arranged in the outer sleeve 4;

[0043] A headrest mounting plate 6, comprising a first fixed plate 65 and a second fixed plate 66 forming an included angle with the first fixed plate 65, the first fixed plate 65 is hingedly connected with the inner connecting rod 2 and the transmission plate 5 respectively, and the first fixed plate 65 and the second fixed plate 66 can be an integral structure formed by bending sheet metal at a certain included angle, or can be a split structure connected by welding or other fixed connection structure; when the first fixed plate 65 and the second fixed plate 66 are bent by sheet metal, a bending groove 67 is provided beside the second fixed plate 66 to prevent part of the first fixed plate 65 from being bent.

[0044] A drive unit 7, the drive unit 7 is arranged in the outer frame 1, and the drive unit 7 comprises a compression spring 3 abutting and pushing the outer sleeve 4, the inner connecting rod 2 passes through the compression spring 3 and the outer sleeve 4 in sequence, the drive unit 7 drives the outer sleeve 4 and the inner connecting rod 2 to slide in the outer frame 1 to control the transmission plate 5 to link the headrest mounting plate 6 to overturn;

[0045] Among them, a reference surface 11 perpendicular to the upper plane of the outer frame 1 is constructed on the outer frame 1, and the reference surface 11 is also parallel to the axis of the inner connecting rod 2, and the transmission plate 5, the extension plate 41 and the first fixed plate 65 of the headrest mounting plate 6 are all parallel to the reference surface 11.

[0046] ​As a further embodiment provided by this utility model, the upper end of the inner connecting rod 2 extends out of the outer sleeve 4 and forms a flat limiting block 21, and the limiting block 21 is provided with a first through hole 22.

[0047] A second through hole 43 is provided on the extension plate 41;

[0048] The transmission plate 5 has a third through hole 51 and a fourth through hole 52 in sequence;

[0049] The headrest mounting plate 6 is provided with a fifth through hole 63 and a sixth through hole 64;

[0050] Rotating components 9 are provided at the connection points of the first through hole 22 and the sixth through hole 64, the second through hole 43 and the fourth through hole 52, and the third through hole 51 and the fifth through hole 63. The rotating components 9 are connected to the corresponding holes, so that the limiting block 21 is hinged to the headrest mounting plate 6, the headrest mounting plate 6 is hinged to the transmission plate 5, and the transmission plate 5 is hinged to the extension plate 41, so as to realize multi-link transmission, so that the headrest mounting plate 6 can rotate stably and provide a certain support effect for the headrest mounting plate 6.

[0051] Specifically, the outer frame 1 is assembled from two sets of side rods 13 and transverse rods 14. The transmission plate 5, outer sleeve 4, inner connecting rod 2, and headrest mounting plate 6 are also in two sets, evenly distributed on both sides of the reference surface 11. The spacing between these two sets can be set according to actual needs. When the headrest needs adjustment, the outer sleeve 4 and inner connecting rod 2 slide upwards along the outer frame 1 under the push of the drive unit 7, while the headrest mounting plate 6 moves upwards synchronously (maximum movement distance is 110mm). At this time, under the constraint of the transmission plate 5, the headrest mounting plate 6 is rotated on the limiting block 21 (maximum rotation angle up to 119°, such as...). Figure 4 As shown), this automatically adjusts the height and angle of the pillow to improve user comfort. In its normal state (such as...), Figure 5 As shown, at this time, the transmission plate 5 and the limiting block 21 are in abutting state. The limiting block 21 restricts the rotation of the transmission plate 5, further improving the firmness of the headrest mounting plate 6. Furthermore, the adjacent surfaces of the two sets of headrest mounting plates 6 are parallel, the two sets of extension plates 41 are parallel, the two sets of transmission plates 5 are parallel, and the two sets of limiting blocks 21 are parallel. The parallel arrangement of the above four pairs of mechanisms reduces the tilting phenomenon when the headrest rotates or rises. Furthermore, when the first locking member 42 on the outer sleeve 4 touches the guide bushing 12 on the outer sleeve 4, the outer sleeve 4 stops rising. The inner connecting rod 2 continues to rise along the outer sleeve 4 under the push of the drive motor 70. Restricted by the transmission plate 5, the headrest mounting plate 6 stops rising and flips, so that the flipping and rising of the flipping device are synchronized.

[0052] As a further provided embodiment of the utility model, the rotating part 9 includes a rod body 91 and a limiting ring 94 arranged at the end of the rod body 91, and an installation part 93 is arranged between the limiting ring 94 and the rod body 91, the limiting block 21, the extension plate 41, the transmission plate 5 and the headrest installation plate 6 are all located on the installation part 93 and rotate, the limiting ring 94 is clamped to the rod body 91, so that the rod body 91 forms an installation interval (the installation part 93) with the rod body 91, and the limiting block 21, the extension plate 41, the transmission plate 5 and the headrest installation plate 6 are all located on the installation part 93 and rotate.

[0053] As a further provided embodiment of the utility model, the rod body 91 is provided with a gasket 92 located on the installation part 93, and the gasket 92 can be arranged in multiple numbers, and the gasket 92 can be arranged between the headrest installation plate 6 and the transmission plate 5, between the transmission plate 5 and the extension plate 41 and between the headrest installation plate 6 and the limiting block 21, so as to improve the rotating stability of the headrest installation plate 6, and at the same time, the extension plate 41, the headrest installation plate 6, the transmission plate 5 and the limiting block 21 are kept in a parallel state.

[0054] As a further provided embodiment of the utility model, the driving unit 7 includes a sliding rail 72 and a driving motor 70 arranged on the sliding rail 72, the output end of the driving motor 70 is provided with a sliding block 71, a sliding rod 73 is clamped to the sliding block 71, the sliding rod 73 slides on the sliding rail 72, so as to drive the inner connecting rod 2 and the outer sleeve 4 to slide on the outer frame 1, the sliding rail 72 is located at the center of symmetry of the outer frame 1 and is used for supporting the driving motor 70 and guiding the sliding block 71, the sliding rod 73 is stably located in the outer frame 1 through the sliding block 71, so as to improve the stability of the synchronous adjustment of the height and the angle of the headrest, and the action lead D of the sliding rail 72 is 135 mm.

[0055] As a further provided embodiment of the utility model, the sliding rod 73 is provided with a second locking part 23 for fixing the lower end of the inner connecting rod 2, the second locking part 23 is a double nut or a loose nut, when the second locking part 23 is a double nut, the widths of the two nuts are different, the width of the nut clamped to the sliding rod 73 is smaller, and the width of the other nut is larger, so as to improve the connection firmness of the inner connecting rod 2 and the sliding rod 73.

[0056] As a further provided embodiment of the utility model, the sliding rod 73 is provided with a compression spring 3 for pushing the outer sleeve 4, and the lower end of the outer sleeve 4 is provided with a first locking part 42 abutting against the compression spring 3, when the inner connecting rod 2 pushes the outer sleeve 4 to slide upwards, the outer sleeve 4 slides to the end of the outer frame 1 under the pushing of the compression spring 3, and the inner connecting rod 2 continues to slide, so that the compression spring 3 is in a compressed state, so as to prevent the headrest installation plate 6 from being reversed, the headrest installation plate 6 gradually adjusts the angle, and when the headrest installation plate 6 is reset, the compression spring 3 gradually resets the compressed compression spring 3 with the downward sliding of the inner connecting rod 2, so that the inner connecting rod 2 and the outer sleeve 4 always keep a certain distance.

[0057] As the further provided embodiment of the utility model, the outer frame 1 is provided with a guide bush 12, the outer sleeve 4 is located on the guide bush 12 and slides, the inner surface of the guide bush 12 is provided with a self-lubricating coating, the coating material is polytetrafluoroethylene, so that the friction is reduced during the up and down movement of the outer sleeve, and the abnormal sound between the guide bush and the outer sleeve 4 during the height adjustment of the sofa is avoided, and the user experience is affected.The guide bush 12 plays a supporting and guiding role, and the limiting plate 121 on the guide bush 12 can be externally connected to a deck chair or a sofa.

[0058] As the further provided embodiment of the utility model, the outer frame 1 is provided with a support seat 15 supporting the drive unit 7, and the support seat 15 is provided on the horizontal rod 14 in two groups to support the sliding rail 72 and the drive motor 70, so as to improve the output stability of the turnover mechanism.

[0059] As the further provided embodiment of the utility model, the second fixing plate 66 of the headrest mounting plate 6 is provided with a first mounting hole 61 and a second mounting hole 62, the first mounting hole 61 is larger than the second mounting hole 62, and the first mounting hole 61 and the second mounting hole 62 improve the firmness of the headrest mounting plate 6 and the backrest connection.

[0060] The above technical scheme of the utility model provides a solution significantly different from the prior art, and the parts not involved in the technical scheme of the application are the same as or can be realized by the prior art, and will not be described again.

[0061] The technical scheme in the above embodiment has clearly and completely described the content of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

Claims

1. A motorized lift and tip mechanism characterized by, The utility model relates to a headrest driving device, which comprises the following parts: An outer frame, an outer sleeve is arranged in the outer frame to slide, one end of the outer sleeve is provided with an extension plate, a transmission plate is hinged on the extension plate; An inner connecting rod, which is arranged in the outer sleeve to slide; A headrest mounting plate, which comprises a first fixed plate and a second fixed plate forming an angle with the first fixed plate, the first fixed plate is hinged with the inner connecting rod and the transmission plate respectively; A driving unit, which is arranged in the outer frame, and the driving unit comprises a compression spring pushing the outer sleeve, the inner connecting rod passes through the compression spring and the outer sleeve in sequence, the driving unit drives the outer sleeve and the inner connecting rod to slide in the outer frame to control the transmission plate to link the headrest mounting plate to overturn; Wherein, a reference surface perpendicular to the plane of the outer frame is constructed on the outer frame, and the reference surface is also parallel to the axis of the inner connecting rod, the transmission plate, the extension plate and the first fixed plate of the headrest mounting plate are all parallel to the reference surface.

2. A motorized lift and tumble mechanism according to claim 1, wherein, The upper end of the inner connecting rod extends out of the outer sleeve and forms a flat limiting block, a first through hole is formed in the limiting block; A second through hole is formed in the extension plate; A third through hole and a fourth through hole are formed in the transmission plate in sequence; A fifth through hole and a sixth through hole are formed in the headrest mounting plate; Rotating parts are arranged at the connection between the first through hole and the sixth through hole, the connection between the second through hole and the fourth through hole, and the connection between the third through hole and the fifth through hole.

3. A motorized lift and tip mechanism according to claim 2, wherein The rotating part comprises a rod body and a limiting ring arranged at the end of the rod body, a mounting part is arranged between the limiting ring and the rod body, the limiting block, the extension plate, the transmission plate and the headrest mounting plate are all arranged on the mounting part to rotate.

4. A motorized lift and tumble mechanism according to claim 3, wherein, A gasket is arranged on the rod body on the mounting part.

5. The motorized lift and tumble mechanism of claim 1, wherein, The driving unit comprises a sliding rail and a driving motor arranged on the sliding rail, the output end of the driving motor is provided with a sliding block, a sliding rod is connected with the sliding block, the sliding rod slides on the sliding rail to drive the inner connecting rod and the outer sleeve to slide on the outer frame.

6. A motorized lift and tip mechanism as claimed in claim 5, wherein, A second locking part is arranged on the sliding rod to fix the lower end of the inner connecting rod.

7. The motorized lift and tumble mechanism of claim 1, wherein, The lower end of the outer sleeve is provided with a first locking part abutting against the compression spring.

8. The motorized lift and tumble mechanism of claim 1, wherein, A guide bushing is arranged on the outer frame, a self-lubricating coating is arranged on the inner surface of the guide bushing, and the outer sleeve slides on the guide bushing.

9. The motorized lift and tumble mechanism of claim 1, wherein, A support seat is arranged on the outer frame to support the driving unit.

10. The motorized lift and tumble mechanism of claim 1, wherein, First and second mounting holes are formed in the second fixed plate of the headrest mounting plate.

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