Locking mechanism for central armrest of automobile seat

Abstract

The invention discloses an automobile seat central armrest locking mechanism which comprises a shell and a cover plate, and the shell is provided with a first cam shaft shell positioning hole I, a second cam shaft shell positioning hole I, a first locking limiting column positioning hole, a first maximum stroke limiting column positioning hole and a first torsion spring mounting column positioning hole. A first camshaft shell positioning hole II, a second camshaft shell positioning hole II, a second locking limiting column positioning hole, a second maximum stroke limiting column positioning hole and a second torsional spring mounting column positioning hole are formed in the cover plate. According to the locking mechanism for the central armrest of the automobile seat, through cooperative arrangement of the first cam shaft, the second cam shaft, the locking limiting column, the maximum stroke limiting column and the torsional spring mounting column, the central armrest is in a locking state when the central armrest is in a storage position, and only when the central armrest needs to be opened, the central armrest can be opened by unlocking the locking mechanism through the inhaul cable.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a locking mechanism for a central armrest of an automobile seat. Background Art

[0002] With the continuous development of automobile comfort, the functions of the center armrests of seats are becoming more and more abundant, and the weight is becoming heavier. When the car is driving at high speed and brakes suddenly, the center armrest will flip forward due to the large inertia due to its own weight. When the inertia is greater than the friction of the seat cover, the center armrest will open from the storage position, which will produce abnormal noise and other safety hazards.

[0003] There are two ways to fix the existing large armrest in the storage position:

[0004] The first type is the traditional large armrest with a lighter weight, which is fixed in the storage position entirely by the friction between the cover. It will definitely be eliminated due to its safety and abnormal noise issues;

[0005] The second type of multifunctional large armrest with heavier weight, the locking method is currently in the research and development stage. The market has seen the use of manual angle adjusters for locking, and its disadvantages are:

[0006] 1. The manual recliner must be perfectly circular due to structural reasons. However, the central armrest can only provide space in the thickness direction, which is the maximum diameter of the manual recliner. Therefore, the manual recliner must be miniaturized, which means that the bearing force arm of the toothed part inside the manual recliner is shorter, affecting the limit of the locking strength.

[0007] 2. Due to the small diameter of the manual adjuster, the welding area of ​​the tooth plate is too close to the tooth shape, which can easily lead to welding deformation and cause jamming.

[0008] 3. The manual adjuster has a smaller diameter and a smaller welding area on the tooth plate, which limits the welding strength.

[0009] Based on the above situation, the present invention proposes a locking mechanism for a central armrest of a car seat, which can effectively solve the above problems. Summary of the invention

[0010] The purpose of the present invention is to provide a locking mechanism for a central armrest of a car seat. The locking mechanism for the central armrest of a car seat of the present invention has a simple structure and is easy to use. Through the coordination of a first camshaft, a second camshaft, a locking limit column, a maximum stroke limit column and a torsion spring mounting column, the central armrest is locked when in a storage position. The central armrest can be opened only when it needs to be opened by unlocking the locking mechanism through a cable. In addition, the central armrest can be automatically locked by pushing it to the storage position without any extra operation.

[0011] The present invention is achieved through the following technical solutions:

[0012] A locking mechanism for a central armrest of an automobile seat comprises a housing and a cover plate, wherein the housing is provided with a first camshaft housing positioning hole 1, a second camshaft housing positioning hole 1, a first locking limit column positioning hole, a first maximum stroke limit column positioning hole and a first torsion spring mounting column positioning hole, and the cover plate is provided with a first camshaft housing positioning hole 2, a second camshaft housing positioning hole 2, a second locking limit column positioning hole, a second maximum stroke limit column positioning hole and a second torsion spring mounting column positioning hole;

[0013] A first camshaft is rotatably connected between the first camshaft housing locating hole 1 and the first camshaft housing locating hole 2, a second camshaft is rotatably connected between the second camshaft housing locating hole 1 and the second camshaft housing locating hole 2, a locking limit column is fixedly arranged between the first locking limit column locating hole and the second locking limit column locating hole, a maximum stroke limit column is fixedly arranged between the first maximum stroke limit column locating hole and the second maximum stroke limit column locating hole, and a torsion spring mounting column is fixedly arranged between the first torsion spring mounting column locating hole and the second torsion spring mounting column locating hole;

[0014] The second camshaft is provided with a torsion spring, and one end of the torsion spring is connected to the torsion spring mounting column. The second camshaft extends to the outside of the housing and is fixedly connected to the unlocking piece.

[0015] The purpose of the present invention is to provide a locking mechanism for a central armrest of a car seat. The locking mechanism for the central armrest of a car seat of the present invention has a simple structure and is easy to use. Through the coordination of a first camshaft, a second camshaft, a locking limit column, a maximum stroke limit column and a torsion spring mounting column, the central armrest is locked when in a storage position. The central armrest can be opened only when it needs to be opened by unlocking the locking mechanism through a cable. In addition, the central armrest can be automatically locked by pushing it to the storage position without any extra operation.

[0016] Preferably, the first camshaft includes a first camshaft cover plate positioning column, a first cam, and a first camshaft housing positioning column which are arranged in sequence from top to bottom; the first cam is provided with a camshaft locking limit surface, a camshaft maximum stroke limit surface, a first camshaft locking force surface, and a camshaft fork surface; the first camshaft cover plate positioning column is provided with a camshaft end milling flat surface.

[0017] Preferably, the second camshaft includes a second camshaft cover plate positioning column, a second camshaft torsion spring positioning column, a second cam, and a second camshaft housing positioning column which are arranged in sequence from top to bottom; the second cam is provided with a camshaft torsion spring mounting surface, a second camshaft locking force surface and a camshaft retracting force surface; and the second camshaft housing positioning column is provided with a camshaft unlocking plate connecting surface.

[0018] Preferably, the torsion spring is provided with a positioning torsion arm and a mounting torsion arm, the positioning torsion arm is connected to the torsion spring mounting column, and the mounting torsion arm is connected to the second camshaft.

[0019] Preferably, a second camshaft connecting hole and a cable connecting hole are provided on the unlocking piece, and the second camshaft connecting hole is fixedly connected to the second camshaft.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] The locking mechanism of the central armrest of the automobile seat of the present invention has a simple structure and is easy to use. Through the coordination of the first camshaft, the second camshaft, the locking limit column, the maximum stroke limit column and the torsion spring mounting column, the central armrest is locked when in the storage position. The central armrest can be opened only when it needs to be opened by unlocking the locking mechanism through a pull cable. In addition, the central armrest can be automatically locked by pushing it to the storage position without the need for additional operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0024] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the housing of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the cover plate of the present invention;

[0027] Figure 6 is a schematic structural diagram of the first camshaft of the present invention from a first viewing angle;

[0028] Figure 7 is a schematic structural diagram of the first camshaft of the present invention from a second viewing angle;

[0029] Figure 8 is a schematic structural diagram of the first camshaft of the present invention from a third viewing angle;

[0030] Fig. 9 is a schematic structural diagram of the second camshaft of the present invention from a first viewing angle;

[0031] Fig.10 is a schematic structural diagram of the second camshaft of the present invention from a second viewing angle;

[0032] Fig.11 It is a schematic diagram of the structure of the torsion spring of the present invention;

[0033] Fig.12 This is a schematic diagram of the structure of the unlocking piece of the present invention;

[0034] Fig.13 This is a schematic diagram of the structure of the present invention installed on the armrest frame in the first working state;

[0035] Fig.14 For the present invention Fig.13 Schematic diagram of the internal structure of the first working state;

[0036] Fig.15 This is a schematic diagram of the structure of the present invention installed on the armrest frame in the second working state;

[0037] Fig.16 For the present invention Fig.15 Schematic diagram of the internal structure of the second working state;

[0038] Fig.17 This is a schematic diagram of the structure of the present invention installed on the armrest frame in the third working state;

[0039] Fig.18 For the present invention Fig.17 Schematic diagram of the internal structure of the third working state;

[0040] Fig.19 Schematic diagram of the internal structure of the fourth working state of the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0042] Embodiment 1:

[0043] like Figures 1 to 12As shown, the present invention provides a locking mechanism for a central armrest of a car seat, comprising a housing 101 and a cover plate 102, wherein the housing 101 is provided with a first camshaft housing positioning hole 101a, a second camshaft housing positioning hole 101b, a first locking limit column positioning hole 101c, a first maximum travel limit column positioning hole 101d and a first torsion spring mounting column positioning hole 101e, and the cover plate 102 is provided with a first camshaft housing positioning hole 102a, a second camshaft housing positioning hole 102b, a second locking limit column positioning hole 102c, a second maximum travel limit column positioning hole 102d and a second torsion spring mounting column positioning hole 102e;

[0044] A first camshaft 103 is rotatably connected between the first camshaft housing positioning hole 101a and the first camshaft housing positioning hole 2 102a, a second camshaft 104 is rotatably connected between the second camshaft housing positioning hole 101b and the second camshaft housing positioning hole 102b, a locking limiting column 107 is fixedly arranged between the first locking limiting column positioning hole 101c and the second locking limiting column positioning hole 102c, a maximum stroke limiting column 108 is fixedly arranged between the first maximum stroke limiting column positioning hole 101d and the second maximum stroke limiting column positioning hole 102d, and a torsion spring mounting column 109 is fixedly arranged between the first torsion spring mounting column positioning hole 101e and the second torsion spring mounting column positioning hole 102e;

[0045] A torsion spring 105 is disposed on the second camshaft 104 , and one end of the torsion spring 105 is connected to a torsion spring mounting column 109 . The second camshaft 104 extends to the outside of the housing 101 and is fixedly connected to an unlocking piece 106 .

[0046] Embodiment 2:

[0047] like Figures 1 to 12 As shown, the present invention provides a locking mechanism for a central armrest of a car seat, comprising a housing 101 and a cover plate 102, wherein the housing 101 is provided with a first camshaft housing positioning hole 101a, a second camshaft housing positioning hole 101b, a first locking limit column positioning hole 101c, a first maximum travel limit column positioning hole 101d and a first torsion spring mounting column positioning hole 101e, and the cover plate 102 is provided with a first camshaft housing positioning hole 102a, a second camshaft housing positioning hole 102b, a second locking limit column positioning hole 102c, a second maximum travel limit column positioning hole 102d and a second torsion spring mounting column positioning hole 102e;

[0048] A first camshaft 103 is rotatably connected between the first camshaft housing positioning hole 101a and the first camshaft housing positioning hole 2 102a, a second camshaft 104 is rotatably connected between the second camshaft housing positioning hole 101b and the second camshaft housing positioning hole 102b, a locking limiting column 107 is fixedly arranged between the first locking limiting column positioning hole 101c and the second locking limiting column positioning hole 102c, a maximum stroke limiting column 108 is fixedly arranged between the first maximum stroke limiting column positioning hole 101d and the second maximum stroke limiting column positioning hole 102d, and a torsion spring mounting column 109 is fixedly arranged between the first torsion spring mounting column positioning hole 101e and the second torsion spring mounting column positioning hole 102e;

[0049] A torsion spring 105 is disposed on the second camshaft 104 , and one end of the torsion spring 105 is connected to a torsion spring mounting column 109 . The second camshaft 104 extends to the outside of the housing 101 and is fixedly connected to an unlocking piece 106 .

[0050] The torsion spring 105 is provided to allow the second camshaft 104 to push in one direction, thereby facilitating locking of the first camshaft 103. The locking limit column 107, the maximum stroke limit column 108, and the torsion spring mounting column 109 may be rivets, or the limit features may be directly stamped out from the housing 101 or the cover plate 102. The housing 101 and the cover plate 102 may be connected and fixed by rivets or by welding.

[0051] The first camshaft 103 includes a first camshaft cover plate positioning column 103b, a first cam, and a first camshaft housing positioning column 103a which are arranged in sequence from top to bottom. The first cam is provided with a camshaft locking limit surface 103c, a camshaft maximum stroke limit surface 103d, a first camshaft locking force surface 103e, and a camshaft fork surface 103f. The first camshaft cover plate positioning column 103b is provided with a camshaft end milling flat surface 103g.

[0052] The first camshaft 103 can be separated into two parts, namely, the first cam and the shaft, which are processed and then assembled into one.

[0053] Furthermore, in another embodiment, the second camshaft 104 includes a second camshaft cover plate positioning column 104b, a second camshaft torsion spring positioning column 104c, a second cam, and a second camshaft housing positioning column 104a which are arranged in sequence from top to bottom, the second cam is provided with a camshaft torsion spring mounting surface 104d, a second camshaft locking force surface 104e and a camshaft retracting force surface 104f, and the second camshaft housing positioning column 104a is provided with a camshaft unlocking piece connecting surface 104g.

[0054] The second camshaft 104 can be separated into two parts, namely, a second cam and a shaft, which are processed and then assembled into one.

[0055] Furthermore, in another embodiment, a positioning torsion arm 105 a and a mounting torsion arm 105 b are provided on the torsion spring 105 , the positioning torsion arm 105 a is connected to the torsion spring mounting column 109 , and the mounting torsion arm 105 b is connected to the second camshaft 104 .

[0056] The positioning torque arm 105a can use the torsion spring mounting column 109 as the fulcrum for the rotation of the second camshaft 104, and the mounting torque arm 105b can push the second camshaft 104.

[0057] Furthermore, in another embodiment, a second camshaft connecting hole 106 a and a cable connecting hole 106 b are formed on the unlocking piece 106 , and the second camshaft connecting hole 106 a is fixedly connected to the second camshaft 104 .

[0058] The cable connection hole 106 b can be connected to a cable, so that the cable can control the unlocking piece 106 .

[0059] like Figures 13 to 14 As shown, when the central armrest needs to be fixed in the storage position, the central armrest is flipped backward, and the armrest frame 200 drives the first camshaft 103 of the locking mechanism, and flips backward together with the armrest frame 200, so that the cylindrical surface of the locking limit column 107 is in contact with the camshaft locking limit surface 103c of the first camshaft 103. At the same time, due to the force of the torsion spring 105, the second camshaft locking force surface 104e of the second camshaft 104 is in contact with the first camshaft locking force surface 103e, and the friction between the two generates a self-locking force. When the external force wants to flip the entire armrest forward or backward, the second camshaft 104 and the first camshaft 103 remain relatively fixed, that is, the central armrest is locked forward and backward.

[0060] like Figures 15 to 16 As shown, when the central armrest needs to be opened, the unlocking piece 106 is pulled by the cable, the second camshaft 104 rotates around its own axis, the second camshaft locking force surface 104e is disengaged from the first camshaft locking force surface 103e, and the locked state is released. The central armrest is flipped forward, and then the loading force of the cable is released, and the central armrest is in an unlocked angular free state.

[0061] like Figures 17 to 18 As shown, when the central armrest is flipped to a horizontal position, the cylindrical surface of the maximum stroke limit column 108 is fitted with the camshaft maximum stroke limit surface 103d of the first camshaft 103 after being unlocked, thereby achieving the maximum stroke limit.

[0062] like Fig.19As shown, when the central armrest needs to be flipped from the horizontal position to the storage position, the camshaft back force surface 104f of the second camshaft 104 will be pushed away by the camshaft fork surface 103f of the first camshaft 103. When the camshaft back force surface 104f of the second camshaft 104 passes over the camshaft fork surface 103f of the first camshaft 103, the second camshaft locking force surface 104e under the action of the torsion spring 105 will be pressed against the first camshaft locking force surface 103e, and self-locking is achieved through the friction between the two.

[0063] The cam self-locking structure is applied to the locking function of the central armrest of the car seat, and the rivet plays the role of position limiting and connection fixing at the same time.

[0064] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the automobile seat center armrest locking mechanism of the present invention, and can produce the positive effects recorded in the present invention.

[0065] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0066] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A locking mechanism for a central armrest of a car seat, characterized in that: The invention comprises a housing and a cover plate, wherein the housing is provided with a first camshaft housing positioning hole 1, a second camshaft housing positioning hole 1, a first locking limit column positioning hole, a first maximum stroke limit column positioning hole and a first torsion spring mounting column positioning hole, and the cover plate is provided with a first camshaft housing positioning hole 2, a second camshaft housing positioning hole 2, a second locking limit column positioning hole, a second maximum stroke limit column positioning hole and a second torsion spring mounting column positioning hole; A first camshaft is rotatably connected between the first camshaft housing locating hole 1 and the first camshaft housing locating hole 2, a second camshaft is rotatably connected between the second camshaft housing locating hole 1 and the second camshaft housing locating hole 2, a locking limit column is fixedly arranged between the first locking limit column locating hole and the second locking limit column locating hole, a maximum stroke limit column is fixedly arranged between the first maximum stroke limit column locating hole and the second maximum stroke limit column locating hole, and a torsion spring mounting column is fixedly arranged between the first torsion spring mounting column locating hole and the second torsion spring mounting column locating hole; The second camshaft is provided with a torsion spring, and one end of the torsion spring is connected to the torsion spring mounting column, and the second camshaft extends to the outside of the housing and is fixedly connected to the unlocking piece; The locking mechanism is applied to the locking function of the central armrest of the car seat; the locking limit column, the torsion spring mounting column, and the maximum stroke limit column simultaneously play the role of position limiting and fixed connection.

2. The locking mechanism for the central armrest of a vehicle seat according to claim 1, characterized in that: The first camshaft includes a first camshaft cover plate positioning column, a first cam, and a first camshaft housing positioning column, which are arranged in sequence from top to bottom. The first cam is provided with a camshaft locking limit surface, a camshaft maximum stroke limit surface, a first camshaft locking force surface, and a camshaft fork surface. The first camshaft cover plate positioning column is provided with a camshaft end milling flat surface.

3. The locking mechanism for the central armrest of a vehicle seat according to claim 1, characterized in that: The second camshaft includes a second camshaft cover plate positioning column, a second camshaft torsion spring positioning column, a second cam, and a second camshaft housing positioning column which are arranged in sequence from top to bottom; the second cam is provided with a camshaft torsion spring mounting surface, a second camshaft locking force surface and a camshaft retracting force surface; the second camshaft housing positioning column is provided with a camshaft unlocking plate connecting surface.

4. The locking mechanism for the central armrest of a vehicle seat according to claim 1, characterized in that: The torsion spring is provided with a positioning torsion arm and a mounting torsion arm, the positioning torsion arm is connected to the torsion spring mounting column, and the mounting torsion arm is connected to the second camshaft.

5. The locking mechanism for the central armrest of a vehicle seat according to claim 1, characterized in that: The unlocking piece is provided with a second camshaft connecting hole and a cable connecting hole, and the second camshaft connecting hole is fixedly connected to the second camshaft.

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