Automobile seat armrest locking mechanism, seat and automobile

Abstract

The invention relates to the technical field of seat parts, and discloses an automobile seat armrest locking mechanism, a seat and a vehicle, the seat armrest locking mechanism comprises an armrest framework assembly and an armrest fixing support assembly, and the armrest framework assembly is provided with an unlocking rod assembly and a first rotation reset mechanism; an unlocking wheel is arranged on the first rotary reset mechanism; a second rotary reset mechanism is arranged on the armrest fixing support assembly, and a lock hook is arranged on the second rotary reset mechanism; the unlocking wheel and the lock hook are arranged in a matched mode, the unlocking rod assembly drives the unlocking wheel to rotate, and locking or unlocking of the unlocking wheel and the lock hook is achieved. Locking or unlocking of the unlocking wheel and the lock hook is achieved through cooperation of the unlocking wheel and the lock hook, locking can be achieved only by rotating the armrest in the using process, unlocking is conducted through the unlocking rod assembly, the whole structure is simple, the manufacturing cost is lower, the large armrest locking device is used for locking the large armrest of the rear row seat of the automobile, and use is convenient. The problem that an existing automobile seat large armrest is high in cost can be solved.

Description

Technical Field

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

[0002] With the continuous progress of automobile development, cars have gradually evolved from the original means of transportation to the third space in addition to people's life and work. Among them, the rear seats play a very key role in the evolution of space. Large sofas and large mattresses all highlight the status of rear seats in the entire vehicle space. The large armrests on the backrests of the rear seats are favored by major OEMs because they can provide members with comfortable arm support, variable storage space, intelligent interactive experience, and visual space separation. However, in order to meet the collision requirements of the car, the large armrests need to have a locking function.

[0003] The locking mechanism of the traditional large armrest of the seat, for example, the patent with the authorization announcement number CN219056064U discloses a car seat armrest locking mechanism, a car rear seat and a car, which can improve the locking strength of the armrest when it is folded, and can improve the stability of the movement of the armrest when it is unfolded and folded, thereby improving the overall use quality of the car seat. However, its structure is relatively complex and the production cost is high. This type of large armrest seat is often only used in high-end models. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a car seat armrest locking mechanism, a seat and a vehicle, which have a simpler structure and lower cost, and are used for locking the large armrests of the rear seats of cars, thereby solving the problem of high cost of the current large armrests of car seats.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] In the first aspect, the present invention discloses a locking mechanism for an automobile seat armrest, including an armrest frame assembly and an armrest fixing bracket assembly, wherein the armrest frame assembly is provided with an unlocking rod assembly and a first rotation reset mechanism, wherein the first rotation reset mechanism is provided with an unlocking wheel; the armrest fixing bracket assembly is provided with a second rotation reset mechanism, wherein the second rotation reset mechanism is provided with a lock hook; the unlocking wheel and the lock hook are matched and arranged, and the unlocking wheel is driven to rotate by the unlocking rod assembly to achieve locking or unlocking of the unlocking wheel and the lock hook. This technical solution achieves locking or unlocking of the unlocking wheel and the lock hook through the cooperation of the unlocking wheel and the lock hook. When in use, the armrest can be locked by simply rotating it, and the unlocking rod assembly is used for unlocking. The whole structure is simple, and the manufacturing cost is also lower. It is used for locking the large armrests of the rear seats of automobiles, and can solve the problem of the high cost of the large armrests of automobile seats.

[0007] Furthermore, the armrest frame assembly includes a first frame body and a second frame body, the unlocking rod assembly is arranged between the first frame body and the second frame body, and the first rotation reset mechanism is arranged on the first frame body; the armrest fixed bracket assembly includes a first fixed bracket, and the second rotation reset mechanism is arranged on the first fixed bracket.

[0008] Furthermore, the unlocking lever assembly includes an unlocking lever and an unlocking paddle, wherein the unlocking lever is rotatably mounted between the first frame body and the second frame body, and the unlocking paddle is fixedly mounted on the unlocking lever; and the unlocking wheel is fixedly mounted on the end of the unlocking lever close to the first frame body. With such an arrangement, when in use, the unlocking paddle can be rotated to drive the unlocking lever to rotate, and the rotation of the unlocking lever can then drive the unlocking wheel to rotate, thereby achieving the unlocking of the unlocking wheel and the lock hook.

[0009] Further, an unlocking cable is fixedly connected to the unlocking paddle. In this solution, the unlocking cable can be connected to a pull ring located outside the armrest. When in use, the unlocking paddle can be pulled through the unlocking cable by pulling the external pull ring, which is more convenient.

[0010] Furthermore, the first rotation reset mechanism includes an unlocking rod return spring and an unlocking rod fixed sleeve, the first frame body is provided with a first through hole, the unlocking rod slides through the first through hole; the unlocking rod fixed sleeve is sleeved on the unlocking rod between the unlocking paddle and the first frame body, the unlocking rod return spring is sleeved on the unlocking rod fixed sleeve, one end of the unlocking rod return spring is hung on the unlocking paddle, and the other end of the unlocking rod return spring is hung on the first frame body. With such a configuration, when the unlocking paddle is pulled, the unlocking rod rotates, thereby compressing the unlocking rod return spring, which can drive the unlocking wheel to rotate; and under the action of the unlocking rod return spring, the unlocking wheel can be reset.

[0011] Furthermore, an unlocking rod mounting hole is provided at one end of the unlocking rod close to the first frame body, an unlocking wheel shaft is detachably mounted in the unlocking rod mounting hole, and the unlocking wheel is arranged at one end of the unlocking wheel shaft away from the unlocking rod. Such an arrangement makes it more convenient to disassemble and assemble the unlocking rod and the unlocking wheel.

[0012] Furthermore, the unlocking wheel is elliptical, and is eccentrically mounted on the end of the unlocking rod close to the first skeleton body; the minor axis length of the unlocking wheel is A, the major axis length is B, the hook length of the lock hook is C, and the inner angle of the lock hook is D, wherein 0.4<A / B<0.5, A=1.1*C~1.3*C, 85°<D<88°. The technical solution is configured in this way, so that the locking and unlocking of the unlocking wheel and the lock hook can be quickly and effectively unlocked. If such parameter range is exceeded, the unlocking may fail, resulting in the need for multiple unlockings, which affects the user experience.

[0013] Furthermore, the second rotation reset mechanism includes a lock hook return spring, a fixed shaft and a limiter, wherein the fixed shaft is fixedly mounted on the first fixed bracket; the lock hook and the lock hook return spring are both sleeved on the fixed shaft, and the limiter is fixedly mounted on the end of the fixed shaft; one end of the lock hook return spring is hung on the first fixed bracket, and the other end of the lock hook return spring is hung on the lock hook. With such a configuration, the lock hook can be driven to rotate by the rotation of the unlocking wheel, and the configuration of the lock hook return spring enables the lock hook to be reset.

[0014] Furthermore, a second through hole is provided on the first fixing bracket, the fixing shaft is a fixing screw, and the stopper is a fixing nut; the fixing screw is fixedly inserted into the second through hole, and the fixing nut is threadedly connected to the end of the fixing screw. Such a configuration makes the entire second rotation reset mechanism more convenient in assembly and disassembly.

[0015] Furthermore, a first armrest axle pin is provided on the first frame body, and a second armrest axle pin is provided on the second frame body. The locking mechanism can be rotatably mounted on the seat armrest through the first armrest axle pin and the second armrest axle pin, and when the seat armrest is opened downward, the unlocking lever assembly can be driven to rotate, thereby finally achieving the locking of the locking mechanism.

[0016] Furthermore, the armrest fixing bracket assembly further comprises a bracket bushing, the first fixing bracket is provided with a first arc-shaped hole, the bracket bushing is provided with a second arc-shaped hole matching the first arc-shaped hole, and the unlocking wheel shaft is passed through the first arc-shaped hole. Such a configuration allows the unlocking lever to rotate along the track of the first arc-shaped hole when rotating.

[0017] Furthermore, the armrest fixing bracket assembly also includes a second fixing bracket, the second fixing bracket is provided with an arc-shaped groove matching the first arc-shaped hole, the end of the unlocking rod close to the second fixing bracket passes through the second fixing bracket and is slidably arranged in the arc-shaped groove, and the end of the arc-shaped groove is provided with a third through hole. In this technical solution, the end of the unlocking rod away from the unlocking wheel is slidably arranged in the arc-shaped groove, and when the unlocking rod rotates, the arc-shaped groove can limit the unlocking rod, so that the rotation of the unlocking rod is more stable, and the provision of the third through hole facilitates the installation of the unlocking rod and the second fixing bracket.

[0018] In a second aspect, the present invention further discloses a car seat, which comprises the armrest locking mechanism mentioned above.

[0019] In a third aspect, the present invention further discloses a vehicle, comprising a vehicle body and the above-mentioned car seat or armrest locking mechanism.

[0020] The automobile seat armrest locking mechanism, seat and vehicle of the present invention have the following advantages:

[0021] 1. The present invention welds the first fixing bracket and the second fixing bracket to the backrest frame, the locking hook is directly installed on the armrest fixing bracket assembly, and the unlocking rod assembly and the unlocking cable are installed on the first frame body and the second frame body; finally, the first frame body is installed on the armrest fixing bracket assembly and the fixing screws are tightened at the other end; when in use, the user can rotate the armrest frame backward around the armrest axis to the end, and the locking hook will automatically lock the unlocking rod on the armrest frame assembly; when unlocking, the user pulls the unlocking cable, and the unlocking rod rotates and squeezes the locking hook to achieve unlocking. The whole structure is relatively simple, and it is also very convenient to use and install, and the manufacturing cost is lower. It is used for locking the large armrests of the rear seats of automobiles, which can solve the problem of high cost of large armrests of automobile seats.

[0022] 2. The present invention uses the ingenious cooperation of the unlocking wheel and the lock hook to achieve the purpose of locking and unlocking, and the present invention sets the unlocking wheel to be elliptical, and cooperates with the specific lock hook structure to make the locking and unlocking of the unlocking wheel and the lock hook fast and effective, which is more convenient and quick for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a locking mechanism for an automobile seat armrest of the present invention;

[0024] Figure 2 for Figure 1 An exploded view of the locking mechanism of the car seat armrest;

[0025] Figure 3 for Figure 1 Detailed schematic diagram of the center armrest frame assembly;

[0026] Figure 4 for Figure 2 A schematic diagram of a first fixing bracket and a second fixing bracket;

[0027] Figure 5 It is a detailed schematic diagram of the assembly of the first skeleton body and the unlocking rod;

[0028] Figure 6 It is a detailed schematic diagram of the assembly of the first fixed bracket and the locking hook;

[0029] Figure 7 It is a schematic diagram of the structure of the unlocking wheel and the locking hook;

[0030] Figure 8 It is a schematic diagram of the locking process of the armrest frame assembly of the present invention;

[0031] Fig. 9 Schematic diagram of the unlocking process of the armrest frame assembly of the present invention.

[0032] Handrail frame assembly 1, second frame body 10, first frame body 11, first through hole 111, first handrail shaft pin 12, unlocking wheel 13, unlocking wheel shaft 131, unlocking cable 14, unlocking rod fixing sleeve 15, unlocking rod return spring 16, unlocking rod assembly 17, unlocking rod 171, unlocking paddle 172, unlocking rod mounting hole 1711, second handrail shaft pin 18;

[0033] Handrail fixing bracket assembly 2, second fixing bracket 20, arc groove 201, third through hole 202, first fixing bracket 21, second through hole 212, first arc hole 211, bracket bushing 22, second arc hole 221, lock hook 23, lock hook return spring 24, fixing nut 25, fixing screw 26. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0035] The following describes the implementation of the present invention through specific specific embodiments, and those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and only schematic diagrams are shown, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures 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 may be omitted in the figures.

[0036] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the figure. It is only for the convenience of describing the present invention and simplifying the description, and does 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 position relationship in the figures are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] Embodiment 1,

[0038] This embodiment is a locking mechanism for an automobile seat armrest. Figure 1-7As shown, it includes an armrest frame assembly 1 and an armrest fixed bracket assembly 2; the armrest frame assembly 1 includes a first frame body 11 and a second frame body 10, and an unlocking rod assembly 17 is fixedly connected between the first frame body 11 and the second frame body 10; a first rotation reset mechanism is arranged on the first frame body 11, and an unlocking wheel 13 is arranged on the first rotation reset mechanism; the armrest fixed bracket assembly 2 includes a first fixed bracket 21 and a second fixed bracket 20, a second rotation reset mechanism is arranged on the first fixed bracket 21, and a locking hook 23 is arranged on the second rotation reset mechanism; the unlocking wheel 13 is matched with the locking hook 23, as described below.

[0039] In this embodiment, the unlocking lever assembly 17 includes an unlocking lever 171 and an unlocking paddle 172. The unlocking lever 171 is rotatably mounted between the first frame body 11 and the second frame body 10, and the unlocking paddle 172 is fixedly mounted on the unlocking lever 171. The unlocking wheel 13 is fixedly mounted on the end of the unlocking lever 171 close to the first frame body 11, and the unlocking paddle 172 is fixedly connected with the unlocking cable 14. The armrest of the seat can connect the unlocking cable 14 to the pull ring located outside the armrest. When in use, pulling the external pull ring can pull the unlocking paddle 172 through the unlocking cable 14, thereby driving the unlocking lever 171 to rotate, and the rotation of the unlocking lever 171 further drives the unlocking wheel 13 to rotate, thereby realizing the unlocking of the unlocking wheel 13 and the lock hook 23.

[0040] In this embodiment, the first rotation reset mechanism includes an unlocking lever return spring 16 and an unlocking lever fixed sleeve 15. A first through hole 111 is provided on the first skeleton body 11, and the unlocking lever 171 slides through the first through hole 111; the unlocking lever fixed sleeve 15 is sleeved on the unlocking lever 171 between the unlocking paddle 172 and the first skeleton body 11, and the unlocking lever return spring 16 is sleeved on the unlocking lever fixed sleeve 15. One end of the unlocking lever return spring 16 is hung on the unlocking paddle 172, and the other end of the unlocking lever return spring 16 is hung on the first skeleton body 11. When the unlocking paddle 172 is pulled, the unlocking lever 171 rotates, thereby compressing the unlocking lever return spring 16, and the unlocking wheel 13 can be driven to rotate; and under the action of the unlocking lever return spring 16, the unlocking wheel 13 can be reset. In order to facilitate the disassembly and assembly of the unlocking rod 171 and the unlocking wheel 13, an unlocking rod mounting hole 1711 is opened at one end of the unlocking rod 171 close to the first skeleton body 11. The unlocking rod mounting hole 1711 can be a threaded hole or a blind hole. In this embodiment, it is set as a threaded hole. The unlocking wheel axle 131 is installed in the unlocking rod mounting hole 1711 with an inner thread connection. The unlocking wheel 13 is eccentrically installed on the end of the unlocking wheel axle 131 away from the unlocking rod 171.

[0041] In this embodiment, the second rotation reset mechanism includes a lock hook return spring 24, a fixing screw 26 and a fixing nut 25. The fixing screw 26 is fixedly mounted on the first fixed bracket 21; the lock hook 23 and the lock hook return spring 24 are both sleeved on the fixing screw 26, and the fixing nut 25 is threadedly connected to the end of the fixing screw 26; one end of the lock hook return spring 24 is hung on the first fixed bracket 21, and the other end of the lock hook return spring 24 is hung on the lock hook 23; in this way, the lock hook 23 can be driven to rotate by the rotation of the unlocking wheel 13, and the setting of the lock hook return spring 24 enables the lock hook 23 to be reset.

[0042] Among them, the first fixed bracket 21 is provided with a second through hole 212, and the fixing screw 26 is fixedly penetrated in the second through hole 212; the first armrest axle pin 12 is fixedly penetrated in the first skeleton body 11, and the second armrest axle pin 18 is fixedly penetrated in the second skeleton body 10. The locking mechanism can be rotatably installed on the seat armrest through the first armrest axle pin 12 and the second armrest axle pin 18. When the seat armrest is opened downward, the unlocking rod assembly 17 can be driven to rotate, and finally the locking of the locking mechanism is realized. The armrest fixed bracket assembly 2 also includes a bracket bushing 22, the first fixed bracket 21 is provided with a first arc hole 211, the bracket bushing 22 is provided with a second arc hole 221 that matches the first arc hole 211, and the unlocking wheel shaft 131 is penetrated in the first arc hole 211. The second fixed bracket 20 is provided with an arc groove 201 matching the first arc hole 211, and the end of the unlocking rod 171 close to the second fixed bracket 20 passes through the second fixed bracket 20 and is slidably arranged in the arc groove 201, and the end of the arc groove 201 is provided with a third through hole 202. With such a configuration, the unlocking rod 171 can be limitedly rotated along the track of the first arc hole 211 when rotating; the end of the unlocking rod 171 away from the unlocking wheel 13 is slidably arranged in the arc groove 201, and when the unlocking rod 171 rotates, the arc groove 201 can limit the unlocking rod 171, making the rotation of the unlocking rod 171 more stable, and the configuration of the third through hole 202 facilitates the installation of the unlocking rod 171 and the second fixed bracket 20.

[0043] like Figure 7 As shown, the unlocking wheel of this embodiment is elliptical, and the unlocking wheel 13 is eccentrically installed at the end of the unlocking rod 171. The minor axis length of the unlocking wheel is A, and the major axis length is B. The hook length of the locking hook 23 is C, and the inner angle of the locking hook 23 is D. In practice, 0.4<A / B<0.5, A=1.1*C~1.3*C, and 85°<D<88° can all achieve locking and unlocking; but in order to make the locking and unlocking of the unlocking wheel and the locking hook fast and effective and improve the user experience, in this embodiment, A / B is equal to 0.45, A=1.2*C, and D is equal to 87°.

[0044] The armrest fixing bracket assembly 2 of the present embodiment is assembled as follows: first, the first fixing bracket 21 and the second fixing bracket 20 are fixed to the seat back frame by welding; the fixing screw 26 is fixed to the second through hole 212 of the first fixing bracket 21 by welding; then the bracket bushing 22 is installed in the first arc hole 211 of the first fixing bracket 21, and the clamp is used to match the corresponding position of the first fixing bracket 21 to fix it on the first fixing bracket 21; then the lock hook return spring 24 is placed in the fixing screw 26, and one end of the lock hook return spring 24 is hooked on the hook of the first fixing bracket 21, and then the lock hook 23 is placed in the fixing screw 26, and the other end of the lock hook return spring 24 is hung on the lock hook 23 (see Figure 4 and Figure 6 ). At this point, the assembly of the first fixing bracket 21 is completed, and the subsequent assembly with the foam, decorative parts, and face cover is not related to the core part of the present invention and will not be described here.

[0045] The armrest frame assembly 1 in this embodiment is assembled as follows: first, the first armrest shaft pin 12 and the second armrest shaft pin 18 are welded to the first fixed bracket 21 and the second fixed bracket 20 respectively; then the unlocking paddle 172 is welded to the unlocking rod 171, and then the unlocking rod fixed sleeve 15 is inserted into the unlocking rod return spring 16, and then the unlocking rod fixed sleeve 15 together with the unlocking rod return spring 16 is inserted into the unlocking rod 171, and one end of the unlocking rod return spring 16 is hung on the unlocking paddle 172; then the unlocking rod assembly 17 together with the unlocking rod return spring 16 and the unlocking rod fixed sleeve 15 are combined with the second fixed bracket 20, and one end of the unlocking rod return spring 16 is hung in the bracket mounting hole corresponding to the second fixed bracket 20; then the unlocking wheel 13 is fixed to the unlocking rod mounting hole 1711 on the unlocking rod 171 through the unlocking wheel shaft 131; finally, the unlocking cable 14 is assembled at the corresponding positions of the unlocking paddle 172 and the first armrest frame body 11 (see details). Figure 3 and Figure 5 ). At this point, the armrest frame assembly 1 is assembled, and the subsequent assembly with the foam, decorative parts, and face cover is not related to the core part of the present invention and will not be described here.

[0046] In this embodiment, the armrest frame assembly 1 and the armrest fixing bracket assembly 2 are assembled as follows: first, the first armrest axle pin 12 and the unlocking wheel 13 in the armrest frame assembly 1 are respectively inserted into the circular hole and the second arc hole 221 of the bracket bushing 22 in the armrest fixing bracket assembly 2; then, the other end of the unlocking rod 171 in the armrest frame assembly 1 is hung on the arc groove 201 on the other side of the second frame body 10 in the armrest fixing bracket assembly 2; then, the armrest frame assembly 1 is rotated to align the third through hole 202 with the first through hole 111 on the other side of the first frame body 11 in the armrest fixing bracket assembly 2; finally, the fixing nut 25 is tightened to complete the assembly of the armrest frame assembly 1 and the armrest fixing bracket assembly 2.

[0047] The locking function in this embodiment is described as follows: Figure 8 As shown, the armrest of the seat is rotated downward, and the armrest frame assembly 1 is rotated backward around the axis of the first armrest axis pin 12 and the second armrest axis pin 18. During this process, the unlocking wheel 13 rotates together with the axis of the first armrest axis pin 12 and the second armrest axis pin 18. After rotating to a certain angle, the unlocking wheel 13 contacts the lock hook 23 in the armrest fixing bracket assembly 2. As the armrest frame assembly 1 rotates further, the unlocking wheel 13 squeezes the lock hook 23 to rotate around the axis. When the unlocking wheel 13 passes the most convex point of the lock hook 23, the lock hook 23 rotates in the opposite direction around the axis under the tension of the lock hook return spring 24, returns to the initial state, and hooks the unlocking wheel 13. The inner angle of the lock hook 23 is about 87 degrees. Since the unlocking wheel 13 is elliptical, both ends of the unlocking contour will be squeezed by the inner contour of the lock hook 23 during axial rotation, so that it cannot rotate, which plays a locking function.

[0048] Description of the unlocking function in this embodiment: Fig. 9 As shown, when unlocking, by pulling the unlock cable 14 forward, the unlocking rod 171 in the armrest frame assembly 1 moves around the axis, driving the unlocking wheel 13 to rotate. Since the unlocking wheel 13 is elliptical in shape, its unlocking contour squeezes the lock hook 23 while rotating, causing the lock hook 23 to rotate around the axis. After a certain angle, the contour of the unlocking wheel 13 will pass over the highest point of the contour of the lock hook 23. At this time, the armrest frame assembly 1 begins to rotate forward around the axis of the first armrest shaft pin 12 and the second armrest shaft pin 18 under the action of the force of pulling the unlock cable 14, so that the unlocking wheel 13 is separated from the lock hook 23, and the lock hook 23 returns to the initial position under the pulling force of the lock hook return spring 24.

[0049] The subsequent locking and unlocking cycles are performed according to the above embodiment. The implementation of the structure of this embodiment can well solve the problem of complex locking structure and high cost of the large armrest of the car seat back, effectively reduce the cost of the whole seat, and provide technical support for the popularization and application of the large armrest.

[0050] Embodiment 2,

[0051] This embodiment is a car seat, which includes the armrest locking mechanism in the above-mentioned embodiment 1.

[0052] Embodiment 3,

[0053] This embodiment is a vehicle, which includes a vehicle body and the armrest locking mechanism of the above-mentioned embodiment 1.

[0054] Embodiment 4,

[0055] This embodiment is a vehicle, which includes a vehicle body and the car seat of the above-mentioned embodiment 2.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A locking mechanism for an automobile seat armrest, characterized in that: It includes an armrest frame assembly and an armrest fixing bracket assembly, the armrest frame assembly is provided with an unlocking rod assembly and a first rotation reset mechanism, the first rotation reset mechanism is provided with an unlocking wheel; the armrest fixing bracket assembly is provided with a second rotation reset mechanism, the second rotation reset mechanism is provided with a locking hook; the unlocking wheel and the locking hook are matched, and the unlocking wheel is driven to rotate by the unlocking rod assembly to achieve locking or unlocking of the unlocking wheel and the locking hook.

2. The vehicle seat armrest locking mechanism according to claim 1, characterized in that: The armrest frame assembly includes a first frame body and a second frame body, the unlocking rod assembly is arranged between the first frame body and the second frame body, and the first rotation reset mechanism is arranged on the first frame body; the armrest fixed bracket assembly includes a first fixed bracket, and the second rotation reset mechanism is arranged on the first fixed bracket.

3. The vehicle seat armrest locking mechanism according to claim 2, characterized in that: The unlocking lever assembly includes an unlocking lever and an unlocking paddle. The unlocking lever is rotatably installed between the first frame body and the second frame body, and the unlocking paddle is fixedly installed on the unlocking lever; the unlocking wheel is fixedly installed on the end of the unlocking lever close to the first frame body.

4. The vehicle seat armrest locking mechanism according to claim 3, characterized in that: An unlocking cable is fixedly connected to the unlocking paddle.

5. The vehicle seat armrest locking mechanism according to claim 3, characterized in that: The first rotation reset mechanism includes an unlocking rod return spring and an unlocking rod fixed sleeve. A first through hole is provided on the first skeleton body, and the unlocking rod slides through the first through hole; the unlocking rod fixed sleeve is sleeved on the unlocking rod between the unlocking paddle and the first skeleton body, the unlocking rod return spring is sleeved on the unlocking rod fixed sleeve, one end of the unlocking rod return spring is hung on the unlocking paddle, and the other end of the unlocking rod return spring is hung on the first skeleton body.

6. The vehicle seat armrest locking mechanism according to claim 3, characterized in that: An unlocking rod mounting hole is provided at one end of the unlocking rod close to the first frame body, an unlocking wheel shaft is detachably mounted in the unlocking rod mounting hole, and the unlocking wheel is arranged at one end of the unlocking wheel shaft away from the unlocking rod.

7. The vehicle seat armrest locking mechanism according to claim 3, characterized in that: The unlocking wheel is elliptical and is eccentrically installed at the end of the unlocking rod close to the first skeleton body; the short axis length of the unlocking wheel is A, the long axis length is B, the hook length of the locking hook is C, and the inner angle of the locking hook is D, wherein 0.4<A / B<0.5, A=1.1*C~1.3*C, 85°<D<88°.

8. The vehicle seat armrest locking mechanism according to claim 3, characterized in that: The second rotation reset mechanism includes a lock hook return spring, a fixed shaft and a limit piece, the fixed shaft is fixedly mounted on the first fixed bracket; the lock hook and the lock hook return spring are both sleeved on the fixed shaft, and the limit piece is fixedly mounted on the end of the fixed shaft; one end of the lock hook return spring is hung on the first fixed bracket, and the other end of the lock hook return spring is hung on the lock hook.

9. The vehicle seat armrest locking mechanism according to claim 8, characterized in that: The first fixing bracket is provided with a second through hole, the fixing shaft is a fixing screw, and the limiting member is a fixing nut; the fixing screw is fixedly penetrated in the second through hole, and the fixing nut is threadedly connected to the end of the fixing screw.

10. The vehicle seat armrest locking mechanism according to claim 2, characterized in that: The first frame body is provided with a first handrail shaft pin, and the second frame body is provided with a second handrail shaft pin.

11. The vehicle seat armrest locking mechanism according to claim 2, characterized in that: The armrest fixing bracket assembly also includes a bracket bushing, the first fixing bracket is provided with a first arc-shaped hole, the bracket bushing is provided with a second arc-shaped hole matching the first arc-shaped hole, and the unlocking wheel shaft is penetrated in the first arc-shaped hole.

12. The vehicle seat armrest locking mechanism according to claim 11, characterized in that: The armrest fixing bracket assembly also includes a second fixing bracket, which is provided with an arc groove matching the first arc hole, and one end of the unlocking rod close to the second fixing bracket passes through the second fixing bracket and is slidably arranged in the arc groove, and a third through hole is provided at the end of the arc groove.

13. A car seat, characterized in that: The car seat comprises the armrest locking mechanism described in any one of claims 1-12.

14. A vehicle, characterized in that: The vehicle comprises a vehicle body, and the car seat according to claim 13 or the armrest locking mechanism according to any one of claims 1-12.

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