Electric drive hinge

Abstract

The utility model relates to the technical field of seat adjustment, and discloses an electric drive hinge which comprises an installation ring, a center shaft, a first toothed plate and a second toothed plate, a first shaft hole capable of being connected with an external output piece is formed in the center shaft, and the number of teeth of the first toothed plate is different from that of teeth of the second toothed plate. The first toothed plate and the second toothed plate are movably attached to the inner wall of the mounting ring, the first toothed plate is arranged at one end of the center shaft, and a driving assembly used for driving the second toothed plate and the first toothed plate to concentrically and relatively rotate is arranged at the other end of the center shaft; the hinge structure has the effect that the inner teeth with different tooth numbers on the two sides of the hinge structure can concentrically and relatively rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of seat adjustment, and particularly relates to an electric drive hinge. Background Art

[0002] Whether it is a car seat or an office seat, it directly affects the riding comfort and safety of the user.

[0003] Existing seats usually have various adjustment functions, such as front-back sliding, height adjustment, backrest angle adjustment, etc., so that users can adjust the seat position according to their own needs and body characteristics. Therefore, the electrification of seat adjustment functions is a major trend. Through electrification, users can adjust the seat tilt angle, front-back position, etc. just by pressing or pulling the corresponding button. However, different numbers of internal teeth are often used on both sides of the common adjustment hinge mechanism, and it is still difficult for the current hinge mechanism to achieve concentric relative rotation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric drive hinge, which has the effect of enabling the internal teeth with different numbers of teeth on both sides of the hinge structure to perform concentric relative rotation.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: It includes a mounting ring, a central shaft, a first tooth plate, and a second tooth plate. A first shaft hole that can be connected to an external output member is opened inside the central shaft. The number of teeth of the first tooth plate and the second tooth plate is different. The first tooth plate and the second tooth plate are movably attached to the inner wall of the mounting ring. The central axis of the first tooth plate coincides with the central axis of the second tooth plate. The first tooth plate is arranged at one end of the central shaft, and a driving component for driving the second tooth plate to perform concentric relative rotation with the first tooth plate is arranged at the other end of the central shaft.

[0006] The further setting of the utility model is: The driving component includes a cam arranged on the central shaft and a driving member, and the cam drives the second tooth plate to rotate through the driving member.

[0007] The further setting of the utility model is: A circular ring-shaped bushing is arranged between the cam and the driving member, and the cam is tightly attached to the inner wall of the bushing.

[0008] The further setting of the utility model is: The driving member is a toothed ring, and the inner side of the driving member is tightly attached to the bushing.

[0009] A further setting of the present utility model is that: the first toothed plate includes a first plate body and a first deepening portion provided on a side of the first plate body away from the second plate body. A second shaft hole adapted to the central axis is opened at the center of the first toothed plate. First tooth blocks are uniformly arranged on the outer wall of the first deepening portion along the circumferential direction.

[0010] A further setting of the present utility model is that: the second toothed plate includes an annular second plate body and a second deepening portion provided on a side of the second plate body away from the first toothed plate. Second tooth blocks are uniformly arranged on the outer wall of the second deepening portion along the circumferential direction. A third shaft hole coaxial with the second shaft hole is opened on the second deepening portion. An internal tooth groove engaged with the driving member is opened on the inner wall of the second plate body.

[0011] A further setting of the present utility model is that: a fixing ring is provided on the central axis. A first synchronous groove is opened on the fixing ring. A second synchronous groove engaged with the first synchronous groove is opened on the inner side of the cam.

[0012] A further setting of the present utility model is that: a limiting ring is provided on a side of the mounting ring close to the first toothed plate. A side of the first plate body close to the first deepening portion is movably attached to the limiting ring.

[0013] A further setting of the present utility model is that: a limiting cylinder communicated with the third shaft hole is provided on a side of the second deepening portion close to the first toothed plate. The central axis is movably attached to the inner wall of the limiting cylinder.

[0014] The beneficial effects of the present utility model are:

[0015] 1. By providing a central axis, a driving assembly, etc., when the number of teeth of the first toothed plate and the second toothed plate on both sides of the hinge mechanism is different, the second toothed plate is driven by the driving assembly. When the central axis rotates, the central axis drives the first toothed plate to rotate synchronously, and the driving assembly drives the second toothed plate to rotate in the opposite direction, so that the first toothed plate and the second toothed plate rotate concentrically and relatively within the mounting ring, meeting the transmission and cooperation requirements of the hinge mechanism.

[0016] 2. By providing a cam and a driving member, when the central axis rotates, the central axis drives the first toothed plate and the cam to rotate synchronously. The cam drives the driving member to rotate. The driving member drives the second plate body to rotate in the opposite direction through the tooth ring and the internal tooth groove of the second plate body, thereby realizing the concentric and relative rotation of the first tooth blocks and the second tooth blocks, enabling the internal teeth with different numbers of teeth on both sides of the hinge structure to perform concentric and relative rotation.

[0017] 3. By providing a bushing, a certain movement buffer can be left during rotation, reducing the wear caused by different rotation speeds due to different numbers of teeth on both sides. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of an embodiment of an electric drive hinge of the present utility model;

[0020] Figure 2 is an exploded structural diagram of an embodiment of an electric drive hinge of the present utility model;

[0021] Figure 3 is a schematic structural diagram of an embodiment of an electric drive hinge of the present utility model;

[0022] Figure 4 is a schematic structural diagram of an embodiment of an electric drive hinge of the present utility model;

[0023] Figure 5 is a schematic structural diagram of an embodiment of an electric drive hinge of the present utility model.

[0024] In the figure, 1, mounting ring; 2, central shaft; 3, first toothed plate; 3a, first plate body; 3b, first deepening part; 4, second toothed plate; 4a, second plate body; 4b, second deepening part; 5, first shaft hole; 6, drive assembly; 6a, cam; 6b, driving member; 7, bushing; 8, second shaft hole; 9, first tooth block; 10, second tooth block; 11, third shaft hole; 12, internal tooth groove; 13, fixing ring; 14, first synchronous groove; 15, second synchronous groove; 16, limiting ring; 17, limiting cylinder. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] The present utility model provides an electric drive hinge, as Figures 1 to 5As shown, it includes a mounting ring 1, a central shaft 2, a first tooth plate 3 and a second tooth plate 4. The central shaft 2 is provided with a first shaft hole 5 that can be connected to an external output member. The number of teeth of the first tooth plate 3 and the second tooth plate 4 are different. The first tooth plate 3 and the second tooth plate 4 are movably fitted on the inner wall of the mounting ring 1. The central axis of the first tooth plate 3 coincides with the central axis of the second tooth plate 4. The first tooth plate 3 is arranged at one end of the central shaft 2, and the other end of the central shaft 2 is provided with a driving component 6 for driving the second tooth plate 4 to rotate concentrically with the first tooth plate 3.

[0027] Furthermore, the driving assembly 6 includes a cam 6a and a driving member 6b provided on the central shaft 2 , and the cam 6a drives the second gear plate 4 to rotate through the driving member 6b.

[0028] Furthermore, a circular bushing 7 is provided between the cam 6 a and the driving member 6 b , and the cam 6 a is tightly fitted to the inner wall of the bushing 7 .

[0029] Furthermore, the driving member 6 b is a gear ring, and the inner side of the driving member 6 b is tightly fitted with the bushing 7 .

[0030] Furthermore, the first tooth plate 3 includes a first plate body 3a and a first deepened portion 3b arranged on a side of the first plate body 3a away from the second plate body 4a. A second axial hole 8 that cooperates with the central axis 2 is opened in the center of the first tooth plate 3, and the outer wall of the first deepened portion 3b is evenly provided with first tooth blocks 9 along the circumferential direction.

[0031] Furthermore, the second tooth plate 4 includes a second plate body 4a in a circular shape and a second deepened portion 4b arranged on the side of the second plate body 4a away from the first tooth plate 3, the outer wall of the second deepened portion 4b is evenly provided with second tooth blocks 10 along the circumferential direction, the second deepened portion 4b is provided with a third axial hole 11 coaxial with the second axial hole 8, and the inner wall of the second plate body 4a is provided with an internal tooth groove 12 engaged with the driving member 6b.

[0032] Furthermore, a fixing ring 13 is provided on the central shaft 2 , a first synchronization groove 14 is formed on the fixing ring 13 , and a second synchronization groove 15 meshing with the first synchronization groove 14 is formed on the inner side of the cam 6 a .

[0033] Furthermore, a limiting ring 16 is provided on a side of the mounting ring 1 close to the first tooth plate 3 , and a side of the first plate body 3 a close to the first deepened portion 3 b is movably fitted to the limiting ring 16 .

[0034] Furthermore, a limiting cylinder 17 communicating with the third shaft hole 11 is provided on one side of the second deepening part 4b close to the first toothed plate 3, and the central shaft 2 is movably attached to the inner wall of the limiting cylinder 17.

[0035] During installation, the first plate body 3a is tightly attached to the outer wall of the central shaft 2 through the second shaft hole 8. At the same time, one side of the first plate body 3a abuts against the fixing ring 13. The second synchronous groove 15 inside the cam 6a meshes with the first synchronous groove 14 on the fixing ring 13. One side of the cam 6a is attached to the first plate body 3a. The outer wall of the cam 6a is tightly attached to the inner wall of the bushing 7. The outer wall of the bushing 7 is tightly attached to the inner wall of the driving part 6b. The external gear ring of the driving part 6b is partially meshed with the inner tooth groove 12 of the second plate body 4a. When the number of teeth of the first toothed plate 3 and the second toothed plate 4 on both sides of the hinge mechanism is different, the second toothed plate 4 is driven by the driving assembly 6, and the second deepening part 4b is movably sleeved on the outer wall of the central shaft 2 through the limiting cylinder 17. At the same time, the outer walls of the first plate body 3a and the second plate body 4a are both movably attached to the inner wall of the mounting ring 1. The first tooth blocks 9 and the second tooth blocks 10 on the first deepening part 3b and the second deepening part 4b are respectively used to connect with the hinges on both sides of the mounting ring 1. The external output part is connected to the central shaft 2 through the first shaft hole 5. After the external output part is connected to the first shaft hole 5 of the central shaft 2, it can drive the central shaft 2 to rotate. When the central shaft 2 rotates, the central shaft 2 drives the first plate body 3a and the cam 6a to rotate synchronously. The cam 6a drives the driving part 6b to rotate, so as to realize the concentric relative rotation of the first tooth block 9 and the second tooth block 10, enabling the inner teeth with different numbers of teeth on both sides of the hinge structure to perform concentric relative rotation.

[0036] By providing the bushing 7, a certain movement buffer can be left during rotation, reducing the wear caused by different rotation speeds due to different numbers of teeth on both sides. <{

[0037] By providing the second shaft hole 8, the first synchronous groove 14, the second synchronous groove 15, etc., it is convenient to install the central shaft 2 with the first toothed plate 3 and the central shaft 2 with the cam 6a, realizing the synchronous rotation of the central shaft 2 with the first toothed plate 3 and the cam 6a.

[0038] By providing the fixing ring 13, on the one hand, it is convenient to install the cam 6a, and on the other hand, it can position the first plate body 3a and the second plate body 4a, facilitating the assembly of the entire structure.

[0039] By providing the limiting cylinder 17, the second plate body 4a can be further limited to ensure the concentric relative rotation of the second plate body 4a and the first plate body 3a.

[0040] It should be noted that the various embodiments in this specification are described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0041] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure fall within the scope of protection of the claims.

Claims

1. An electric drive hinge, characterized in that: It includes an installation ring (1), a central shaft (2), a first toothed plate (3), and a second toothed plate (4). A first shaft hole (5) that can be connected to an external output member is provided inside the central shaft (2). The number of teeth of the first toothed plate (3) is different from that of the second toothed plate (4). The first toothed plate (3) and the second toothed plate (4) are movably attached to the inner wall of the installation ring (1). The central axis of the first toothed plate (3) coincides with the central axis of the second toothed plate (4). The first toothed plate (3) is arranged at one end of the central shaft (2), and a driving assembly (6) for driving the second toothed plate (4) to rotate concentrically relative to the first toothed plate (3) is arranged at the other end of the central shaft (2). The driving assembly (6) includes a cam (6a) and a driving member (6b) arranged on the central shaft (2). The cam (6a) drives the second toothed plate (4) to rotate through the driving member (6b).

2. The electric drive hinge according to claim 1, characterized in that: A circular bushing (7) is arranged between the cam (6a) and the driving member (6b), and the cam (6a) is tightly attached to the inner wall of the bushing (7).

3. The electric drive hinge according to claim 2, wherein: The driving member (6b) is a toothed ring, and the inner side of the driving member (6b) is tightly attached to the bushing (7).

4. The electric drive hinge according to claim 1, wherein: The first toothed plate (3) includes a first plate body (3a) and a first deepening part (3b) arranged on one side of the first plate body (3a). A second shaft hole (8) that cooperates with the central shaft (2) is provided at the center of the first toothed plate (3). The outer wall of the first deepening part (3b) is evenly provided with first tooth blocks (9) along the circumferential direction.

5. An electric drive hinge according to claim 4, characterized in that: The second toothed plate (4) includes a circular second plate body (4a) and a second deepening part (4b) arranged on the side of the second plate body (4a) away from the first toothed plate (3). The outer wall of the second deepening part (4b) is evenly provided with second tooth blocks (10) along the circumferential direction. A third shaft hole (11) that is coaxial with the second shaft hole (8) is provided on the second deepening part (4b). An internal tooth groove (12) that meshes with the driving member (6b) is provided on the inner wall of the second plate body (4a).

6. The electric drive hinge according to claim 2, wherein: A fixing ring (13) is arranged on the central shaft (2), a first synchronization groove (14) is provided on the fixing ring (13), and a second synchronization groove (15) that meshes with the first synchronization groove (14) is provided inside the cam (6a).

7. The electric drive hinge according to claim 4, characterized in that: A limiting ring (16) is arranged on the side of the installation ring (1) close to the first toothed plate (3), and the side of the first plate body (3a) close to the first deepening part (3b) is movably attached to the limiting ring (16).

8. An electric drive hinge according to claim 5, characterized in that: A limiting cylinder (17) that communicates with the third shaft hole (11) is provided on the side of the second deepening part (4b) close to the first toothed plate (3), and the central shaft (2) is movably attached to the inner wall of the limiting cylinder (17).

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