Two-section type opening handrail hinge

Abstract

The utility model relates to a two-section type opening handrail hinge, which comprises a hinge lower hinge, a hinge upper hinge and a hinge lower hinge, the hinge upper hinge can rotate around the first axis relative to the hinge lower hinge and comprises a second connecting part; the friction plate is fixed to the first connecting part and can elastically deform, the friction plate is located on the path of the second connecting part, and the upper hinge comprises a first state in which the second connecting part does not make contact with the friction plate and a second state in which the second connecting part abuts against the friction plate in the axial direction of the first axis and enables the friction plate to elastically deform; the hinge upper hinge can rotate relative to the hinge lower hinge in the second state; the elastic piece overcomes the elastic force of the elastic piece when the hinge upper leaf is switched from the second state to the first state; and the damping structure is used for providing damping force when the upper hinge is switched between the first state and the second state. The turnover speed and time of the handrail can be controlled, the hovering function can be achieved, the problem that the friction force tolerance is too large is solved, and the nodding problem of a hard stop mode of the handrail is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a two-stage opening armrest hinge. Background Art

[0002] In the design of the central control flip armrest in the car interior, there are two main problems with the traditional spring-assisted opening of the armrest hinge. When the spring force is too large, the opening speed is too fast, and the sense of luxury is poor. At the same time, the armrest vibrates and nods due to the fast speed when stopping. If the spring force is reduced, the armrest cannot automatically open to the predetermined angle.

[0003] For the traditional local interference fit extrusion friction plate used in the flip armrest hinge with semi-hover function, since the friction force is controlled by the interference fit between the metal hinge and the friction plate, the problem of large fluctuation range of friction force tolerance caused by matching tolerance cannot be solved. Utility Model Content

[0004] Based on the above description, the utility model provides a two-stage opening armrest hinge to solve the current difficulties in designing the hinge spring force and the problem of a large friction force tolerance fluctuation range caused by matching tolerance in a semi-suspension armrest hinge using a traditional local interference fit extrusion friction plate.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The present application provides a two-stage opening armrest hinge, and the technical solution adopted is as follows:

[0007] A two-stage opening armrest hinge, comprising:

[0008] A hinge lower page, which includes a first connecting portion;

[0009] The hinge upper page is connected to the hinge lower page through a connecting structure, the hinge upper page can rotate relative to the hinge lower page around a first axis and is restricted to move axially relative to the hinge lower page along the first axis, the hinge upper page includes a second connecting portion, and the second connecting portion is axially spaced from the first connecting portion along the first axis;

[0010] a friction plate, which is fixed on the first connecting part and is located on a side of the first connecting part close to the second connecting part, the friction plate can be elastically deformed, the friction plate is located on a path where the second connecting part rotates with the upper hinge page, the upper hinge page includes a first state in which the second connecting part is rotated relative to the lower hinge page until the second connecting part and the friction plate are not in contact, and a second state in which the second connecting part and the friction plate are axially abutted against the first axis and the friction plate is elastically deformed, the upper hinge page can rotate relative to the lower hinge page in the second state, and in the second state of the upper hinge page, the second connecting part and the friction plate provide friction resistance for the relative rotation of the upper hinge page and the lower hinge page;

[0011] An elastic member, which is disposed between the hinge upper page and the hinge lower page and is suitable for overcoming the elastic force of the elastic member when the hinge upper page switches from the second state to the first state;

[0012] The damping structure is arranged between the hinge upper page and the hinge lower page, and is suitable for providing a damping force when the hinge upper page switches between a first state and a second state.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Preferably, a weakening groove is provided on one side of the friction plate axially along the first axis and close to the first connecting portion.

[0015] Preferably, during the switching process of the hinge upper page from the first state to the second state, the initial contact surface of the friction plate with the second connecting part is an inclined surface, and along the rotation path direction of the second connecting part, the distance between the inclined surface and the second connecting part in the axial direction of the first axis gradually decreases.

[0016] Preferably, a protrusion is provided on the second connecting portion, and the protrusion is located on a side of the second connecting portion close to the first connecting portion. When the friction plate is not deformed, a gap is provided between the second connecting portion and the second connecting portion in the axial direction of the first axis, and the thickness of the protrusion in the axial direction of the first axis is greater than the gap. The friction plate is located on the path where the protrusion rotates with the hinge.

[0017] Preferably, during the switching process of the hinge upper page from the first state to the second state, a rounded corner is provided on the initial contact edge of the protruding portion with the friction plate.

[0018] Preferably, the protrusion is formed by stamping the second connecting portion.

[0019] Preferably, the first connection portion and the second connection portion are both in the shape of a plate perpendicular to the first axis, and the first axis passes through the first connection portion and the second connection portion.

[0020] Preferably, the damping structure comprises:

[0021] A rotary damper connected to the lower leaf of the hinge and having a rotary shaft parallel to the first axis, a first gear coaxial with the rotary shaft being fixed to the rotary shaft of the rotary damper;

[0022] A second gear is coaxial with the first axis and fixed to the hinge upper page, and the second gear is meshed with the first gear.

[0023] Preferably, the elastic member comprises a torsion spring which is coaxial with the first axis and connects the hinge upper page and the hinge lower page.

[0024] Preferably, the first connecting parts and the second connecting parts are provided in two groups and are axially spaced and distributed along the first axis, and the friction plate is provided between each group of the first connecting parts and the second connecting parts.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0026] The present application arranges the first connecting part, the second connecting part and the friction plate therebetween, so that the upper page of the hinge can be rotated relative to the lower page of the hinge to realize the opening and closing function of the armrest. When the upper page of the hinge is in the first state, the second connecting part and the friction plate are not in contact. At this time, the upper page of the hinge can automatically rotate to the second state under the elastic force of the elastic member to realize the automatic opening function, and the damping structure provides a damping force during the rotation of the upper page of the hinge to realize the controllability of the flipping speed and time. The elastic force of the elastic member can be set to be larger without causing the problem of too fast opening speed. When the upper page of the hinge rotates to the second state, the second connecting part and the friction plate are in contact and the friction plate is elastically deformed, and friction is generated between the second connecting part and the friction plate. When designing, the size of the friction force can make the upper page of the hinge and the lower page of the hinge relatively fixed, thereby realizing the hovering function, which can be manually opened by personnel when necessary. Dynamically adjust the opening angle; when the friction plate is squeezed with the second connecting part, the pressure generated by the plastic spring effect caused by friction deformation controls the size of the friction force. The characteristic that the elastic modulus of plastic is smaller than the elastic modulus of metal is applied. Under a specific extrusion amount tolerance, the friction force tolerance is much smaller than the friction force tolerance generated by metal extrusion, thereby solving the problem that the friction force tolerance is too large when the traditional hinge uses the extrusion force generated by the deformation of the metal hinge to control the size of the friction force; in the process of the upper page of the hinge rotating from the first state to the second state, the second connecting part gradually causes the friction plate to undergo elastic deformation until it abuts against the friction plate axially on the first axis, and the second connecting part gradually contacts and stops with the friction plate, absorbing the kinetic energy of the upper page of the hinge in the process, thereby gradually slowing down the upper page of the hinge to stop, achieving a soft stop of the upper page of the hinge, and solving the nodding problem of the hard stop method of the armrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A schematic diagram of the structure of a two-stage opening armrest hinge provided in an embodiment of the utility model;

[0028] Figure 2 A schematic top view of a two-stage opening armrest hinge provided in an embodiment of the utility model;

[0029] Figure 3 A schematic side view of a two-stage opening armrest hinge provided in an embodiment of the utility model;

[0030] Figure 4 A schematic diagram of the structure of a friction plate in a two-stage opening armrest hinge provided in an embodiment of the utility model;

[0031] Figure 5 A rear view schematic diagram of a two-stage opening armrest hinge provided in an embodiment of the utility model;

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Hinge lower page; 11. First connecting part; 2. Hinge upper page; 21. Second connecting part; 211. Raised part; 3. Rotating shaft; 4. Limiting block; 5. Torsion spring; 6. Rotary damper; 61. First gear; 7. Second gear; 8. Friction plate; 81. Inclined surface; 82. Weakened groove; 9. Limiting plate. DETAILED DESCRIPTION

[0034] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0036] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0037] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0038] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0039] Reference Figure 1-5 As shown, an embodiment of the present application provides a two-stage opening armrest hinge, which includes a hinge upper page 2, a hinge lower page 1 and an elastic member. The hinge upper page 2 and the hinge lower page 1 are connected by a connecting structure so that the hinge upper page 2 can rotate around a first axis relative to the hinge lower page 1 and is restricted from moving axially along the first axis relative to the hinge lower page 1.

[0040] Reference Figure 1-2As shown, a first connection portion 11 is provided on the lower hinge page 1, and a second connection portion 21 is provided on the upper hinge page 2. The first connection portion 11 and the second connection portion 21 are axially spaced along the first axis, and a connecting structure connects the first connection portion 11 and the second connection portion 21. Specifically, the connecting structure includes a rotating shaft 3, and the axis of the rotating shaft 3 is coaxial with the first axis. In this embodiment, the first connection portion 11 and the second connection portion 21 are both in the shape of a plate perpendicular to the first axis, and two first connection portions 11 and two second connection portions 21 are respectively provided, and the two first connection portions 11 are located between the two second connection portions 21. The rotating shaft 3 passes through the two first A connecting part 11 and two second connecting parts 21, and axially limited by nuts at both ends of the rotating shaft 3, the rotating shaft 3 can rotate relative to the first connecting part 11, the end of the rotating shaft 3 is a D-shaped hole shaft and cooperates with the D-shaped hole on the second connecting part 21 to limit the relative rotation of the rotating shaft 3 and the second connecting part 21; a limit block 4 is provided between adjacent first connecting parts 11 and second connecting parts 21, the limit block 4 is fixed to the first connecting part 11 and contacts with the second connecting part 21 to limit the adjacent first connecting part 11 and second connecting part 21 from approaching each other, that is, to realize the rotatable connection between the hinge upper page 2 and the hinge lower page 1 and to be relatively fixed in the axial direction of the rotating shaft 3.

[0041] Reference Figure 1-2 As shown, the elastic member includes a torsion spring 5, a coaxial ring of which is arranged on the rotating shaft 3 and connects the hinge upper page 2 and the hinge lower page 1, and is suitable for overcoming the elastic force of the torsion spring 5 when the hinge upper page 2 rotates from an open state to a closed state, so that when the hinge upper page 2 needs to be opened, the elastic force of the torsion spring 5 is used to drive the hinge upper page 2 to rotate to the open state, thereby realizing the automatic opening function.

[0042] Reference Figure 1-2 As shown, in order to prevent the hinge upper page 2 from rotating too fast from the closed state to the open state, a damping structure is provided between the hinge upper page 2 and the hinge lower page 1 to provide a damping force when the hinge upper page 2 switches between the closed state and the open state; specifically, the damping structure includes a rotary damper 6 and a second gear 7, the rotary damper 6 is fixed on the hinge lower page 1 and the rotating axis is parallel to the first axis, a first gear 61 coaxial with the rotating axis is fixed on the rotating axis of the rotary damper 6, the second gear 7 is coaxially arranged outside the rotating shaft 3 and fixed to the rotating shaft 3, the second gear 7 is meshed with the first gear 61, in this embodiment, the second gear 7 is an incomplete gear to reduce the space it occupies, one end of the torsion spring 5 is connected to the second gear 7, the elastic force of the torsion spring 5 acts on the second gear 7 and is transmitted to the hinge upper page 2 by the rotating shaft 3. During the rotation of the hinge upper page 2, the damping structure provides a damping force to achieve controllability of the flipping speed and time. When the hinge upper page 2 is in the closed state, the elastic force of the torsion spring 5 can be set to be relatively large without causing the problem of too fast opening speed.

[0043] Reference Figure 1-4As shown, further, in order to realize the function that the hinge upper page 2 can hover at any angle when in the open state, a friction plate 8 is provided between the first connecting part 11 and the second connecting part 21, and the friction plate 8 is fixed on the first connecting part 11 and is located on the side of the first connecting part 11 close to the second connecting part 21, and the friction plate 8 can be elastically deformed. The friction plate 8 is located on the path where the second connecting part 21 rotates with the hinge upper page 2, and the hinge upper page 2 includes a first state in which it rotates relative to the hinge lower page 1 until the second connecting part 21 and the friction plate 8 are not in contact, and a second state in which the second connecting part 21 and the friction plate 8 are axially supported on the first axis and the friction plate 8 is elastically deformed. In the second state, the hinge upper page 2 can rotate relative to the hinge lower page 1, and in the second state, the second connecting part 21 and the friction plate 8 provide friction resistance for the relative rotation of the hinge upper page 2 and the hinge lower page 1.

[0044] Specifically, the first state of the hinge upper page 2 is the closed state, and the second state is the open state. In this way, when the hinge upper page 2 is in the closed state, the friction plate 8 and the second connecting part 21 are not in contact, and the hinge upper page 2 can be smoothly opened under the elastic force of the torsion spring 5. When the hinge upper page 2 is in the open state, that is, the second state, the second connecting part 21 abuts against the friction plate 8 and elastically deforms the friction plate 8, and friction force is generated between the second connecting part 21 and the friction plate 8. During the design, the size of the friction force can make the hinge upper page 2 and the hinge lower page 1 relatively fixed, thereby realizing the hovering function, and the opening angle can be manually adjusted by personnel when necessary.

[0045] Reference Figure 3-4 As shown, further, when the hinge upper page 2 rotates from the first state to the second state until the second connection part 21 and the friction plate 8 just come into contact, in order to enable the second connection part 21 to smoothly rotate to the state of abutting against the friction plate 8 in the axial direction of the rotating shaft 3, during the switching process of the hinge upper page 2 from the first state to the second state, the initial contact surface of the friction plate 8 with the second connection part 21 is set to a slope 81, and along the rotation path direction of the second connection part 21, the distance between the slope 81 and the second connection part 21 in the axial direction of the first axis gradually decreases. Through this arrangement, during the rotation of the hinge upper page 2, the second connecting part 21 can smoothly rotate through the inclined surface 81 to a state where it is distributed axially with the friction plate 8 in the rotating shaft 3, so that the second connecting part 21 and the friction plate 8 abut against each other in the axial direction of the rotating shaft 3 and generate friction force, so as to provide resistance to the relative rotation of the hinge upper page 2 and the hinge lower page 1; on the other hand, during the rotation of the hinge upper page 2 from the first state to the second state, the second connecting part 21 gradually causes the friction plate 8 to undergo elastic deformation until it abuts against the friction plate 8 axially along the first axis, and the second connecting part 21 gradually contacts and stops with the friction plate 8, absorbing the kinetic energy of the hinge upper page 2 in the process, thereby gradually decelerating the hinge upper page 2 to stop, achieving a soft stop of the hinge upper page 2, and solving the nodding problem of the hard stop method of the armrest.

[0046] Reference Figure 4 As shown, further, a weakened groove 82 is provided on one side of the friction plate 8 axially along the first axis and close to the first connecting portion 11, so that when the friction plate 8 is squeezed with the second connecting portion 21, the pressure generated by the plastic spring effect generated by the friction deformation controls the magnitude of the friction force. By applying the characteristic that the elastic modulus of plastic is smaller than the elastic modulus of metal, the friction force tolerance is much smaller than the friction force tolerance generated by metal extrusion under a specific extrusion amount tolerance, thereby solving the problem of excessive friction force tolerance when traditional hinges use metal hinge deformation to generate extrusion force to control the magnitude of friction force.

[0047] Reference Figure 1-5 As shown, further, a protrusion 211 is provided on the second connecting portion 21, and the protrusion 211 is located on the side of the second connecting portion 21 close to the first connecting portion 11. When the friction plate 8 is not deformed, a gap is provided between the second connecting portion 21 and the second connecting portion 21 in the axial direction of the first axis, and the thickness of the protrusion 211 in the axial direction of the first axis is greater than the gap. The friction plate 8 is located on the path where the protrusion 211 rotates with the hinge upper page 2. Through the setting of the protrusion 211, when the hinge upper page 2 is in the first state, the protrusion 211 and the friction plate 8 are spaced apart in the circumferential direction of the rotating shaft 3. At this time, the friction plate 8 is not in contact with the second connecting portion 21. The hinge upper page 2 can rotate smoothly relative to the hinge lower page 1 until it reaches the stop position of the first stage. At this time, the protrusion 211 is in contact with the friction plate 8. When the hinge upper page 2 continues to rotate, the protrusion 211 and the friction plate 8 abut against each other in the axial direction of the rotating shaft 3 and cause the friction plate 8 to undergo elastic deformation. The friction force is generated between the protrusion 211 and the friction plate 8, thereby realizing the hovering function of the hinge.

[0048] Furthermore, the raised portion 211 is formed by stamping the second connecting portion 21, and during the switching process of the hinge upper page 2 from the first state to the second state, a rounded corner is set on the initial contact edge of the raised portion 211 with the friction plate 8 to avoid scratching the friction plate 8 and improve the service life.

[0049] Reference Figure 1-2 As shown, further, a limit plate 9 for limiting the maximum opening angle of the upper hinge page 2 is connected to the lower hinge page 1. When the upper hinge page 2 continues to rotate to a larger opening angle in the second state until it contacts the limit plate 9, it is restricted from continuing to rotate, thereby limiting the maximum opening angle of the upper hinge page 2.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-stage opening armrest hinge, It is characterized in that include: A hinge lower leaf (1), comprising a first connecting portion (11); The hinge upper page (2) is connected to the hinge lower page (1) via a connecting structure, the hinge upper page (2) can rotate relative to the hinge lower page (1) around a first axis and is restricted from axially moving relative to the hinge lower page (1) along the first axis, the hinge upper page (2) comprises a second connecting portion (21), and the second connecting portion (21) and the first connecting portion (11) are axially spaced apart along the first axis; a friction plate (8) fixed on the first connecting portion (11) and located on a side of the first connecting portion (11) close to the second connecting portion (21); the friction plate (8) is elastically deformable; the friction plate (8) is located on a path where the second connecting portion (21) rotates with the hinge upper page (2); the hinge upper page (2) comprises a first state in which the second connecting portion (21) is rotated relative to the hinge lower page (1) until the second connecting portion (21) and the friction plate (8) are not in contact; and a second state in which the second connecting portion (21) and the friction plate (8) are axially abutted against each other on a first axis and elastically deform the friction plate (8); the hinge upper page (2) is rotatable relative to the hinge lower page (1) in the second state; and the second connecting portion (21) and the friction plate (8) provide friction resistance for relative rotation of the hinge upper page (2) and the hinge lower page (1) in the second state; an elastic member, which is arranged between the hinge upper page (2) and the hinge lower page (1), and is suitable for overcoming the elastic force of the elastic member when the hinge upper page (2) switches from the second state to the first state; A damping structure is provided between the hinge upper page (2) and the hinge lower page (1), and is suitable for providing a damping force when the hinge upper page (2) switches between a first state and a second state.

2. The two-stage opening armrest hinge according to claim 1, Features: The friction plate (8) is provided with a weakening groove (82) on one side thereof axially along the first axis and close to the first connecting portion (11).

3. The two-stage opening armrest hinge according to claim 1, Features: During the switching process of the hinge upper page (2) from the first state to the second state, the initial contact surface of the friction plate (8) with the second connecting part (21) is an inclined surface (81), and along the direction of the rotation path of the second connecting part (21), the distance between the inclined surface (81) and the second connecting part (21) in the axial direction of the first axis gradually decreases.

4. The two-stage opening armrest hinge according to claim 1, Features: A protrusion (211) is provided on the second connecting portion (21), and the protrusion (211) is located on a side of the second connecting portion (21) close to the first connecting portion (11). When the friction plate (8) is not deformed, a gap is provided between the second connecting portion (21) and the second connecting portion (21) in the axial direction of the first axis, and the thickness of the protrusion (211) in the axial direction of the first axis is greater than the gap. The friction plate (8) is located on a path where the protrusion (211) rotates with the hinge upper page (2).

5. The two-stage opening armrest hinge according to claim 4, Features: During the process of the hinge upper leaf (2) switching from the first state to the second state, a rounded corner is provided on the initial contact edge of the protruding portion (211) with the friction plate (8).

6. The two-stage opening armrest hinge according to claim 4, Features: The protruding portion (211) is formed by stamping the second connecting portion (21).

7. The two-stage opening armrest hinge according to claim 1, Features: The first connecting portion (11) and the second connecting portion (21) are both in the shape of a plate perpendicular to the first axis, and the first axis passes through the first connecting portion (11) and the second connecting portion (21).

8. The two-stage opening armrest hinge according to claim 1, It is characterized in that The damping structure comprises: A rotary damper (6) connected to the hinge lower leaf (1) and having a rotary axis parallel to the first axis, a first gear (61) coaxial with the rotary axis being fixed on the rotary axis of the rotary damper (6); A second gear (7) is coaxial with the first axis and fixed to the hinge upper page (2), and the second gear (7) is meshed with the first gear (61).

9. The two-stage opening armrest hinge according to claim 1, Features: The elastic member comprises a torsion spring (5), which is coaxial with the first axis and connects the upper hinge leaf (2) and the lower hinge leaf (1).

10. The two-stage opening armrest hinge according to claim 1, Features: The first connecting portion (11) and the second connecting portion (21) are provided in two groups and are axially spaced and distributed along the first axis, and the friction plate (8) is provided between each group of the first connecting portion (11) and the second connecting portion (21).

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