Handrail hinge

Abstract

The utility model provides a handrail hinge which comprises a first support and a second support which are both connected to a rotating shaft in a sleeved mode, the first support and the rotating shaft are relatively fixed, and the second support can rotate relative to the rotating shaft. The damping piece comprises a wrapping circle and a connecting piece, the rotating shaft is sleeved with the wrapping circle, and the connecting piece is fixed to the periphery of the wrapping circle and fixedly connected with the second support; when the second support rotates to a first preset angle from an initial position relative to the rotating shaft, first damping force is generated between the damping piece and the rotating shaft, when the second support rotates to a second preset angle from the first preset angle relative to the rotating shaft, second damping force is generated between the damping piece and the rotating shaft, and the first damping force is smaller than the second damping force; the torsion spring is arranged on the rotating shaft in a sleeving mode, the first end of the torsion spring is connected with the first support, and the second end of the torsion spring is connected with the second support; when the second support is located at the initial position, the torsion spring has torsion enabling the second support to tend to rotate. The armrest hinge provided by the utility model is relatively high in use convenience and comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an armrest hinge. Background Art

[0002] With the continuous improvement of people's material level, cars have become a common means of transportation for every household. At present, most cars are equipped with armrest boxes. The armrest cover of the armrest box is hinged to the box body through a hinge. The hinge structure used in the armrest box is mainly divided into two types: one is only a spring, and the armrest cover automatically pops up to the end position (for example, 90°) after opening and then stops, and then the armrest cover can only be closed by hand. With this structure of hinge, the rebound phenomenon during the opening of the armrest cover may injure the rear seat occupants of the car; the other is that the armrest cover needs to be held by hand after opening, without any support force, and the armrest cover will automatically fall down when released. This structure cannot be operated with one hand, lacks convenience and safety.

[0003] In order to facilitate operation and ensure safety, a hinge structure that allows the armrest cover to hover at any position has also appeared. This structure usually achieves hovering at any position by setting a damping plate between the side wall of the armrest cover bracket and the side wall of the armrest box bracket. As long as the thrust applied by the user is greater than the damping force generated by the damping plate, the armrest cover can be opened. When the thrust is stopped, the damping force at this time is greater than the weight of the armrest cover itself, so that the armrest cover can hover at the current angle. However, when opening the armrest cover, not only the damping force generated by the damping plate must be overcome, but also the buckle connection between the armrest cover and the armrest box must be unlocked, so the external force that the user needs to apply is relatively large, which still leads to poor convenience and comfort of using such hinges. Utility Model Content

[0004] Therefore, in order to overcome the above problems, the utility model provides an armrest hinge which can hover at any angle, provide rotation assistance at the initial position, and further provide pop-up assistance when the armrest cover is opened, and has a simple structure and is easy to assemble.

[0005] The utility model provides an armrest hinge, comprising:

[0006] The first bracket and the second bracket are both sleeved on the rotating shaft, and the first bracket is relatively fixed to the rotating shaft, and the second bracket can rotate relative to the rotating shaft;

[0007] The damping member comprises a circle and a connecting piece, wherein the circle is sleeved on the first end of the rotating shaft, and the connecting piece is fixed to the outer circumference of the circle; the connecting piece is fixedly connected to the second bracket so that the damping member and the second bracket rotate synchronously; when the second bracket rotates from an initial position to a first preset angle relative to the rotating shaft, a first damping force is generated between the damping member and the rotating shaft, and when the second bracket rotates from the first preset angle to the second preset angle relative to the rotating shaft, a second damping force is generated between the damping member and the rotating shaft, and the first damping force is smaller than the second damping force;

[0008] The torsion spring is sleeved on the second end of the rotating shaft, and the first end of the torsion spring is connected to the first bracket, and the second end is connected to the second bracket; when the second bracket is located at the initial position, the torsion spring has a torsion force that causes the second bracket to have a rotation tendency.

[0009] In an optional embodiment, the inner wall of the circle is provided with a first plane and a first circumferential surface, and the rotating shaft is correspondingly provided with a second plane and a second circumferential surface. During the process of the second bracket rotating from an initial position to a first preset angle relative to the rotating shaft, the first plane is opposite to the second plane. During the process of the second bracket rotating from the first preset angle to the second preset angle relative to the rotating shaft, the first plane abuts against the second circumferential surface.

[0010] In an optional embodiment, two transition planes are further provided on the rotating shaft, and the two transition planes are respectively provided at two corners between the second plane and the second circumferential surface.

[0011] In an optional embodiment, the rotating shaft includes a first sub-shaft and a second sub-shaft, the damping member is sleeved outside the first sub-shaft, and the torsion spring is sleeved outside the second sub-shaft; matching pin holes and pins are respectively provided on the first sub-shaft and the second sub-shaft, and the first sub-shaft and the second sub-shaft are connected through the pin holes and the pins.

[0012] In an optional embodiment, the first sub-shaft includes a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment connected in sequence, the first bracket is fixed on the first shaft segment, the second bracket is sleeved on the second shaft segment, the damping element is sleeved on the third shaft segment, the fourth shaft segment extends outside the damping element, and an alignment plane is arranged on the outer periphery of the fourth shaft segment.

[0013] In an optional embodiment, the first bracket includes a first frame plate, a second frame plate and a third frame plate, the first frame plate and the second frame plate are respectively located at two ends of the rotating shaft, and the third frame plate is arranged between the first frame plate and the second frame plate and extends along the axial direction of the rotating shaft; a clamping hole is provided on the third frame plate, and the first hook ring at the first end of the torsion spring is clamped in the clamping hole.

[0014] In an optional embodiment, the second bracket includes a first support plate and a second support plate respectively located at both ends of the rotating shaft, and a first clamping groove is provided on the second support plate. When the second bracket is in the initial position, the second hook ring at the second end of the torsion spring is clamped in the first clamping groove.

[0015] In an optional embodiment, a second snap-in groove is provided on the second frame piece, and when the second bracket starts to rotate relative to the rotating shaft from an initial position, the second snap-in groove is within the movement path of the second hook ring, and when the second bracket rotates to a third preset angle relative to the rotating shaft, the second hook ring is blocked by the second frame piece and clamped in the second snap-in groove, and disengaged from the first snap-in groove; the third preset angle is greater than or equal to the first preset angle.

[0016] In an optional embodiment, the armrest hinge further comprises:

[0017] The torsion spring sleeve is sleeved on the second end of the rotating shaft, and the torsion spring is sleeved outside the torsion spring sleeve; one end of the torsion spring sleeve abuts against the second supporting sheet, and the other end abuts against the clamping ring fixed on the rotating shaft.

[0018] The technical solution of the utility model has the following advantages:

[0019] The armrest hinge provided by the utility model is provided with a damping member fixedly connected to the first bracket at the first end of the rotating shaft, a torsion spring connected to the second bracket is provided at the second end of the rotating shaft, and the damping member is provided to generate a smaller first damping force during the rotation process from the initial position to the first preset angle. The torsion spring has a torsion force (the first damping force is very small or almost 0, and the torsion force here is greater than the first damping force) for driving the second bracket to generate a rotation trend when it is in the preset position. When the corresponding armrest cover is released from a closed state (for example, the armrest cover and the armrest box are connected by a snap-fit ​​connection, and when the snap-fit ​​connection relationship is released), the armrest cover can be assisted to pop open to a certain angle, so that the user can open the armrest cover conveniently; at the same time, by providing the damping member, a larger second damping force can be generated during the process from the first preset angle to the second preset angle, and the corresponding armrest cover can be suspended at any time within this angle range, so that the use convenience and comfort are both high; and the structural arrangement of the damping member and the torsion spring makes the overall structure of the armrest hinge simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 and Figure 2 A schematic diagram of the structure of the armrest hinge provided in an embodiment of the utility model;

[0022] Figure 3A schematic diagram of the position relationship of the damping member provided in the embodiment of the utility model when generating a first damping force;

[0023] Figure 4 A schematic diagram of the position relationship of the damping member provided in the embodiment of the utility model when generating the second damping force;

[0024] Figure 5 A schematic diagram of a partial structure of a rotating shaft provided in an embodiment of the utility model;

[0025] Figure 6 A schematic diagram of a specific structure of a rotating shaft provided in an embodiment of the utility model;

[0026] Figure 7 A schematic diagram of the specific positional relationship between the first clamping slot and the second clamping slot provided in an embodiment of the utility model;

[0027] Description of reference numerals:

[0028] 1-first bracket; 11-first frame plate; 12-second frame plate; 12a-second clamping groove; 13-third frame plate; 13a-first threaded hole; 13b-clamping hole;

[0029] 2-second bracket; 21-first support piece; 22-second support piece; 22a-first clamping groove; 23-third support piece; 23a-second threaded hole;

[0030] 3-rotating axis; 3a-second plane; 3b-second circumferential surface; 3c-transition plane; 31-first sub-axis; 31a-pin hole; 311-first shaft section; 312-second shaft section; 313-third shaft section; 314-fourth shaft section; 314a-alignment plane; 32-second sub-axis; 32a-pin;

[0031] 4-damping member; 41-circumferential; 41a-first plane; 41b-first circumferential surface; 41c-opening; 41d-fixing block; 42-connecting sheet;

[0032] 5-torsion spring; 51-first hook; 52-second hook;

[0033] 6-shaft sleeve;

[0034] 7-bolt;

[0035] 8-Torsion spring sleeve. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0040] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to the implementation of the present invention) may be described. Moreover, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0041] Please refer to Figure 1-Figure 4 , which is a schematic structural diagram of an armrest hinge provided in an embodiment of the utility model, wherein the armrest hinge comprises a first bracket 1, a second bracket 2, a rotating shaft 3, a damping member 4 and a torsion spring 5.

[0042] Please refer to Figure 1 and Figure 2 The first bracket 1 and the second bracket 2 are both sleeved on the rotating shaft 3, and the first bracket 1 is relatively fixed to the rotating shaft 3, and the second bracket 2 can rotate relative to the rotating shaft 3.

[0043] Specifically, Figure 2 As shown, the first bracket 1 may include a first frame piece 11, a second frame piece 12 and a third frame piece 13, wherein the first frame piece 11 and the second frame piece 12 are respectively located at two ends of the rotating shaft 3, and the third frame piece 13 is disposed between the first frame piece 11 and the second frame piece 12 and extends along the axial direction of the rotating shaft 3. Specifically, as Figure 2As shown, a plurality of first threaded holes 13a may be provided on the third frame plate 13, and the first bracket 1 may be connected to the armrest box through these first threaded holes 13a.

[0044] In a specific implementation, fixing components such as clamping rings or fixing nuts can be provided at the ends of both ends of the rotating shaft 3 to limit the first bracket 1 and the second bracket 2 on the rotating shaft 3 .

[0045] In specific implementation, in order to ensure that the first bracket 1 is relatively fixed to the shaft 3, corresponding flat positions can be set on the shaft 3 and in the sleeve hole of the first bracket 1 (specifically, the sleeve holes of the first frame piece 11 and the second frame piece 12).

[0046] Specifically, Figure 2 As shown, the second bracket 2 may include a first support piece 21, a second support piece 22 and a third support piece 23, wherein the first support piece 21 and the second support piece 22 are respectively located at two ends of the rotating shaft 3, and the third support piece 23 is disposed between the first support piece 21 and the second support piece 22 and extends along the axial direction of the rotating shaft 3. Specifically, as Figure 2 As shown, a plurality of second threaded holes 23 a may be provided on the third support plate 23 , and the second bracket 2 may be connected to the armrest cover through the second threaded holes 23 a .

[0047] In a specific implementation, in order to prevent the first bracket 1 and the second bracket 2 from directly abutting against each other, an unstable friction force is generated between the second bracket 2 and the first bracket 1 during the rotation process (because the contact surface between the second bracket 2 and the first bracket 1 will change during the rotation process of the second bracket 2), and at the same time, in order to facilitate the connection between the first bracket 1 and the armrest box, and the connection between the second bracket 2 and the armrest cover, as shown in FIG. Figure 1 and Figure 2 As shown, the armrest hinge in this embodiment may further include two shaft sleeves 6, both of which are sleeved on the rotating shaft 3, and one shaft sleeve 6 is arranged between the first frame piece 11 and the first support piece 21, and the other shaft sleeve 6 is arranged between the second frame piece 12 and the second support piece 22.

[0048] Please refer to Figure 2 The damping member 4 includes a circle 41 and a connecting piece 42, wherein the circle 41 is sleeved on the first end of the rotating shaft 3, and the connecting piece 42 is fixed to the outer circumference of the circle 41; the connecting piece 42 is fixedly connected to the second bracket 2 so that the damping member 4 and the second bracket 2 rotate synchronously; in the process of the second bracket 2 rotating from the initial position to the first preset angle relative to the rotating shaft 3, a first damping force is generated between the damping member 4 and the rotating shaft 3, and in the process of the second bracket 2 rotating from the first preset angle to the second preset angle relative to the rotating shaft 3, a second damping force is generated between the damping member 4 and the rotating shaft 3, and the first damping force is smaller than the second damping force.

[0049] When implementing it, Figure 2As shown, corresponding threaded holes can be provided on the connecting piece 42 and the second bracket 2 (specifically, on the first supporting piece 21 ), and the connecting piece 42 and the second bracket 2 can be fixedly connected by bolts 7 .

[0050] In a specific implementation, in order to improve the stability of the fixed connection between the connecting piece 42 and the second bracket 2, as shown in FIG. Figure 2 As shown, matching fixing blocks 41d and fixing grooves can be respectively provided on the enveloping circle 41 and the second bracket 2 (specifically, on the first support piece 21), and the fixing block 41d is placed in the fixing groove to fix the connecting piece 42 and the second bracket 2.

[0051] Specifically, avoidance planes may be provided in the enclosing circle 41 and on the rotating shaft 3 , so that a first damping force and a second damping force are generated between the enclosing circle 41 and the rotating shaft 3 .

[0052] Specifically, Figure 3 and Figure 4 As shown, the inner wall of the enveloping circle 41 may be provided with a first plane 41a and a first circumferential surface 41b, and the rotating shaft 3 may be provided with a corresponding second plane 3a and a second circumferential surface 3b; at this time, by arranging that the first plane 41a is opposite to the second plane 3a during the process of the second bracket 2 rotating from the initial position to the first preset angle relative to the rotating shaft 3, there is no hard contact between the enveloping circle 41 and the rotating shaft 3, and a first damping force of zero or very small (such as Figure 3 As shown); by setting the second bracket 2 to rotate from the first preset angle to the second preset angle relative to the rotating shaft 3, the first plane 41a is against the second circumferential surface 3b, so that the enveloping circle 41 and the rotating shaft 3 are in hard contact, and a larger second damping force (as shown) is generated between the enveloping circle 41 and the rotating shaft 3 Figure 4 As shown; and those skilled in the art can understand that, although due to the limitations of mechanical drawings, Figure 4 Interference occurs between the first plane 41a and the second circumferential surface 3b, but it does not affect the abutting relationship between the second circumferential surface 3b and the first plane 41a in actual application).

[0053] Specifically, in order to prevent the sharp edge between the second plane 3a and the second circumferential surface 3b from causing rotation stagnation or jamming when the first plane 41a is opposite to the second plane 3a and the first plane 41a is against the second circumferential surface 3b, as shown in FIG. Figure 5 As shown, the rotating shaft 3 may further have two transition planes 3c, and the two transition planes 3c are respectively arranged at two corners between the second plane 3a and the second circumferential surface 3b.

[0054] Specifically, in order to further prevent the first plane 41a and the second circumferential surface 3b from rotating against each other, the problem of rotation stagnation occurs, such as Figure 3 and Figure 4 As shown, the enveloping circle 41 may be provided with an opening 41c.

[0055] Please refer to Figure 1 and Figure 2 The torsion spring 5 is sleeved on the second end of the rotating shaft 3, and the first end of the torsion spring 5 is connected to the first bracket 1, and the second end is connected to the second bracket 2; when the second bracket 2 is in the initial position, the torsion spring 5 has a torsion force that causes the second bracket 2 to have a rotation tendency.

[0056] Specifically, Figure 2 As shown, the third frame piece 13 of the first bracket 1 may be provided with a snap-in hole 13 b, and the first hook 51 of the first end of the torsion spring 5 may be snap-fitted into the snap-in hole 13 b to achieve connection between the first end of the torsion spring 5 and the first bracket 1 .

[0057] Specifically, Figure 2 As shown, the second support piece 22 of the second bracket 2 can be provided with a first snap-in groove 22a, and when the second bracket 2 is in the initial position, the second hook ring 52 at the second end of the torsion spring 5 is fixed in the first snap-in groove 22a to achieve the connection between the second end of the torsion spring 5 and the second bracket 2.

[0058] Specifically, when installing the torsion spring 5, the first hook ring 51 of the torsion spring 5 can be first clamped in the clamping hole 13b, and then the torsion spring 5 can be rotated to generate a certain amount of pre-tightening, and then the second hook ring 52 of the torsion spring 5 can be clamped in the first clamping groove 22a while maintaining the pre-tightening state, so that when the second bracket 2 is in the initial position, the torsion spring 5 has a torque that causes the second bracket 2 to have a rotation tendency.

[0059] Specifically, in order to prevent the torsion spring 5 with a preload from being twisted and deformed on the rotating shaft 3, as shown in FIG. Figure 2 As shown, the armrest hinge in this embodiment may further include a torsion spring sleeve 8, which is sleeved on the second end of the rotating shaft 3, and the torsion spring 5 is sleeved outside the torsion spring sleeve 8; at the same time, in order to limit the torsion spring sleeve 8 on the rotating shaft 3 and prevent the torsion spring sleeve 8 from moving axially along the rotating shaft 3, as shown in FIG. Figure 2 As shown, one end of the torsion spring sleeve 8 can be set to abut against the second support plate 22 of the second bracket 2, and a retaining ring can be set at a position corresponding to the other end of the torsion spring sleeve 8 on the rotating shaft 3, and the other end of the torsion spring sleeve 8 can abut against the retaining ring.

[0060] In summary, the armrest hinge in the present embodiment is provided with a damping member 4 fixedly connected to the first bracket 1 at the first end of the rotating shaft 3, and a torsion spring 5 connected to the second bracket 2 is provided at the second end of the rotating shaft 3, and the damping member 4 is provided to generate a smaller first damping force in the process of rotation from the initial position to the first preset angle, and the torsion spring 5 has a torsion force (the first damping force is very small or almost 0, and the torsion force here is greater than the first damping force) to drive the second bracket 2 to generate a rotation trend when it is in the preset position, so that when the corresponding armrest cover is released from the closed state (for example, the armrest cover and the armrest box are connected by a snap-fit ​​connection, when the snap-fit ​​connection relationship is released), the armrest cover can be assisted to pop open to a certain angle, so that the user can open the armrest cover; at the same time, by providing the damping member 4, a larger second damping force can be generated in the process from the first preset angle to the second preset angle, so that the corresponding armrest cover can be suspended at any time within this angle range, thereby improving its convenience and comfort; and the structural arrangement of the damping member 4 and the torsion spring 5 makes the overall structure of the armrest hinge simple and easy to assemble.

[0061] Based on the fact that when the armrest hinge in this embodiment is installed, the first end of the rotating shaft 3 needs to be aligned with the enveloping circle 41 (alignment between the first plane 41a and the second plane 3a), and the second end of the rotating shaft 3 needs to cooperate with the torsion spring 5 to set the preload, the difficulty of assembling and adjusting the rotating shaft 3 is relatively large; therefore, in order to reduce the difficulty of assembling the rotating shaft 3, as an optional specific implementation of this embodiment, as Figure 6 As shown, the rotating shaft 3 can be arranged to include a first sub-shaft 31 and a second sub-shaft 32, the damping member 4 is sleeved outside the first sub-shaft 31, and the torsion spring 5 is sleeved outside the second sub-shaft 32; the first sub-shaft 31 and the second sub-shaft 32 are respectively provided with matching pin holes 31a and pins 32a, and the first sub-shaft 31 and the second sub-shaft 32 are connected via the pin holes 31a and the pins 32a.

[0062] Specifically, in order to further improve the assembly convenience of the first sub-shaft 31, as Figure 6 As shown, the first sub-axis 31 can be set to include a first shaft segment 311, a second shaft segment 312, a third shaft segment 313 and a fourth shaft segment 314 which are connected in sequence, the first bracket 1 is fixed on the first shaft segment 311, the second bracket 2 is sleeved on the second shaft segment 312, the damping member 4 is sleeved on the third shaft segment 313, the fourth shaft segment 314 extends outside the damping member 4, and an alignment plane 314a is provided on the periphery of the fourth shaft segment 314; thereby, the positional relationship between the first plane 41a and the second plane 3a can be obtained according to the positional relationship between the alignment plane 314a and the first plane 41a, thereby reducing the difficulty of alignment between the first plane 41a and the second plane 3a.

[0063] In order to prevent the reverse twisting after all the pre-tightening amounts of the torsion spring 5 have been released during the process of the second bracket 2 rotating from the first preset angle to the second preset angle relative to the rotating shaft 3, thereby generating a torque that hinders the rotation of the second bracket 2, causing the external force required to rotate the second bracket 2 to gradually increase with the increase of the angle, resulting in a poor user experience; or the pre-tightening amount of the torsion spring 5 is large, and during the process of the second bracket 2 rotating from the first preset angle to the second preset angle relative to the rotating shaft 3, the warning amount of the torsion spring 5 is not completely released, and a torque that drives the second bracket 2 to rotate is still generated, causing the problem of affecting the hovering effect of the second bracket 2 (that is, the corresponding armrest cover); as an optional specific implementation method of this embodiment, such as Figure 2 and Figure 7 As shown, a second engaging groove 12a can be provided on the second bracket 12, and when the second bracket 2 starts to rotate relative to the rotating shaft 3 from the initial position, the second engaging groove 12a is within the movement path of the second hook ring 52 (that is, Figure 7 When the second bracket 2 rotates to a third preset angle relative to the rotating shaft 3, the second hook ring 52 is blocked by the second frame plate 12 and is stuck in the second clamping groove 12a, and is disengaged from the first clamping groove 22a; the third preset angle is greater than or equal to the first preset angle.

[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An armrest hinge, characterized in that: include: The first bracket and the second bracket are both sleeved on the rotating shaft, and the first bracket is relatively fixed to the rotating shaft, and the second bracket can rotate relative to the rotating shaft; A damping member, comprising a circle and a connecting piece, wherein the circle is sleeved on the first end of the rotating shaft, and the connecting piece is fixed to the outer circumference of the circle; the connecting piece is fixedly connected to the second bracket, so that the damping member and the second bracket rotate synchronously; when the second bracket rotates from an initial position to a first preset angle relative to the rotating shaft, a first damping force is generated between the damping member and the rotating shaft, and when the second bracket rotates from the first preset angle to a second preset angle relative to the rotating shaft, a second damping force is generated between the damping member and the rotating shaft, and the first damping force is smaller than the second damping force; A torsion spring is sleeved on the second end of the rotating shaft, and the first end of the torsion spring is connected to the first bracket, and the second end is connected to the second bracket; when the second bracket is located at the initial position, the torsion spring has a torsion force that causes the second bracket to have a rotation tendency.

2. The armrest hinge according to claim 1, characterized in that: The inner wall of the circle is provided with a first plane and a first circumferential surface, and the rotating shaft is correspondingly provided with a second plane and a second circumferential surface. When the second bracket rotates from an initial position to a first preset angle relative to the rotating shaft, the first plane is opposite to the second plane. When the second bracket rotates from the first preset angle to the second preset angle relative to the rotating shaft, the first plane abuts against the second circumferential surface.

3. The armrest hinge according to claim 2, characterized in that: The rotating shaft is also provided with two transition planes, and the two transition planes are respectively provided at two corners between the second plane and the second circumferential surface.

4. The armrest hinge according to claim 2 or 3, characterized in that: The rotating shaft includes a first sub-shaft and a second sub-shaft, the damping member is sleeved outside the first sub-shaft, and the torsion spring is sleeved outside the second sub-shaft; the first sub-shaft and the second sub-shaft are respectively provided with matching pin holes and pins, and the first sub-shaft and the second sub-shaft are connected through the pin holes and the pins.

5. The armrest hinge according to claim 4, characterized in that: The first sub-shaft includes a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment connected in sequence, the first bracket is fixed on the first shaft segment, the second bracket is sleeved on the second shaft segment, the damping member is sleeved on the third shaft segment, the fourth shaft segment extends outside the damping member, and an alignment plane is arranged on the outer periphery of the fourth shaft segment.

6. The armrest hinge according to claim 1, characterized in that: The first bracket includes a first frame plate, a second frame plate and a third frame plate, the first frame plate and the second frame plate are respectively located at two ends of the rotating shaft, the third frame plate is arranged between the first frame plate and the second frame plate and extends along the axial direction of the rotating shaft; the third frame plate is provided with a clamping hole, and the first hook ring of the first end of the torsion spring is clamped in the clamping hole.

7. The armrest hinge according to claim 6, characterized in that: The second bracket includes a first support plate and a second support plate respectively located at two ends of the rotating shaft, and a first clamping groove is provided on the second support plate. When the second bracket is located at the initial position, the second hook ring at the second end of the torsion spring is clamped in the first clamping groove.

8. The armrest hinge according to claim 7, characterized in that: A second clamping groove is provided on the second frame piece, and when the second bracket starts to rotate from the initial position relative to the rotating shaft, the second clamping groove is within the movement path of the second hook ring, and when the second bracket rotates to a third preset angle relative to the rotating shaft, the second hook ring is blocked by the second frame piece and clamped in the second clamping groove, and disengages from the first clamping groove; the third preset angle is greater than or equal to the first preset angle.

9. The armrest hinge according to claim 8, characterized in that: Also includes: A torsion spring sleeve is sleeved on the second end of the rotating shaft, and the torsion spring is sleeved outside the torsion spring sleeve; one end of the torsion spring sleeve abuts against the second support sheet, and the other end abuts against a clamping ring fixed on the rotating shaft.

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