Mechanical adjustable armrest lock

Abstract

The utility model discloses a mechanical adjustable handrail lock which comprises a fixed shaft, a limiting protrusion fixedly connected to the side face of the fixed shaft, a movable piece rotatably installed on the fixed shaft and a first locking piece rotatably connected to the movable piece, and the movable piece rotates with the fixed shaft as the axis. The movable part is provided with a limiting part used for being matched with the limiting protrusion to abut against the limiting protrusion. A second locking piece is connected to the first locking piece, the second locking piece rotates along with the first locking piece to enter the position between the limiting protrusion and the first locking piece or leave the position between the limiting protrusion and the first locking piece, and a first elastic piece is arranged on the movable piece or the first locking piece. The first elastic piece provides elastic force for the second locking piece to abut against the limiting protrusion. The second locking piece is matched with the limiting piece to be attached to the two sides of the limiting protrusion so as to limit rotation of the movable piece. According to the scheme, under the condition that the precision requirement is not greatly increased, all parts in the lock can be matched more tightly, and the problems of looseness and abnormal sound are solved.

Description

Technical Field

[0001] The utility model relates to automobile parts, in particular to a mechanically adjustable armrest lock. Background Art

[0002] Cars are prone to vibrations due to road conditions while driving, and the internal locks are prone to make unusual noises or cause parts to loosen, causing shaking inside the car. The feedback will be more obvious on some larger parts, such as the armrests on the rear seats.

[0003] Therefore, the locks in the car need to reduce the shaking of the parts, which means that the tightness of the fit between the locks needs to be further improved. But generally speaking, in order to make the fit tighter, the precision requirements are higher, which is easy to affect the production cost, production cost, and installation cost.

[0004] Therefore, how to make the components in the lock fit more closely without greatly increasing the precision requirements is a problem that needs to be overcome. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a mechanically adjustable armrest lock, which can make the components inside the lock fit more tightly and reduce the problem of looseness and abnormal noise without greatly increasing the precision requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanically adjustable armrest lock, comprising a fixed shaft, a limiting protrusion fixedly connected to the side of the fixed shaft, a movable part rotatably installed on the fixed shaft, and a first locking part rotatably connected to the movable part, wherein the movable part rotates around the fixed shaft; a limiting part for abutting against the limiting protrusion is provided on the movable part; a second locking part is connected to the first locking part, and the second locking part rotates with the first locking part to enter the position between the limiting protrusion and the first locking part or leave the position between the limiting protrusion and the first locking part, a first elastic part is provided on the movable part or the first locking part, and the first elastic part provides elastic force for the second locking part to abut against the limiting protrusion; the second locking part cooperates with the limiting part to fit on both sides of the limiting protrusion to limit the rotation of the movable part.

[0007] As a further improvement of the present invention, a pushing part is also provided on the first locking member, and the first elastic member and the pushing part act on both sides of the second locking member respectively; when the first locking member rotates to limit the rotation of the movable member, the elastic force of the first elastic member pushes the second locking member to move and abut against the limiting protrusion; when the first locking member rotates to release the restriction of the movable member, the second locking member is pushed by the pushing part and leaves the limiting protrusion.

[0008] As a further improvement of the utility model, a slide rail for the second locking member to move is provided on the movable member or the first locking member, and in the locked state, one end of the slide rail is away from the limiting protrusion, and the other end is close to the limiting protrusion.

[0009] As a further improvement of the utility model, the slide rail is located on the movable part, and a slider for sliding in cooperation with the slide rail is provided at the end of the second locking part, and there is a gap between the slider and the inner wall of the slide rail. Under the elastic force of the first elastic part, the second locking part simultaneously abuts against the side surface and the limiting protrusion of the first locking part.

[0010] As a further improvement of the utility model, the slide rail is arc-shaped, and the outer convex surface of the arc corresponds to the limiting protrusion.

[0011] As a further improvement of the present invention, a groove is provided on the second locking member at a position for contacting the limiting protrusion, and when the second locking member abuts against the limiting protrusion, the limiting protrusion is located in the groove.

[0012] As a further improvement of the present invention, a second elastic member is provided on the first locking member or the movable member, and the second elastic member is used to provide elastic force for the first locking member to rotate toward the limiting protrusion.

[0013] As a further improvement of the present invention, an abutment portion for abutting the limiting protrusion is also provided on the first locking member. When the first locking member rotates to limit the rotation of the movable member, the abutment portion abuts against one side of the limiting protrusion; and the abutment portion, the second locking member, and the limiting member form three contact points with the limiting protrusion, and the three contact points form a triangular distribution.

[0014] As a further improvement of the present utility model, a flexible sleeve is sleeved on the limiting member, and abuts against the limiting protrusion through the flexible sleeve.

[0015] As a further improvement of the utility model, the flexible sleeve is one or more of sponge, rubber, silicone, and resin.

[0016] The beneficial effect of the present invention is that the first elastic member provides elastic force to the second locking member, so that it can stably abut against the limiting protrusion, and the elastic force presses the second locking member against the limiting protrusion, which can react on the movable member or the first locking member, and at this time the limiting member can also abut against the limiting protrusion more tightly. Based on this structure, the movable member can reduce shaking and thus reduce abnormal noise. In addition, the clearance is eliminated by cooperating between the first elastic member and the second locking member, and the requirement for precision is also low. The elastic force can be used to compensate for the precision problem, so the cost will not increase significantly, which has obvious advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the utility model.

[0021] Figure numbers: 1. fixed shaft; 2. limiting protrusion; 3. movable part; 4. first locking part; 5. limiting part; 6. second locking part; 7. first elastic part; 8. pushing part; 9. slide rail; 10. sliding block; 11. second elastic part; 12. abutting part; 13. flexible sleeve; 14. groove. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Reference Figure 1-4 As shown,

[0024] A mechanically adjustable armrest lock comprises a fixed shaft 1, a limiting protrusion 2 fixedly connected to the side of the fixed shaft 1, a movable part 3 rotatably mounted on the fixed shaft 1, and a first locking part 4 rotatably connected to the movable part 3, wherein the movable part 3 rotates around the fixed shaft 1; a limiting part 5 for abutting against the limiting protrusion 2 is provided on the movable part 3; a second locking part 6 is connected to the first locking part 4, and the second locking part 6 rotates with the first locking part 4 to enter the position between the limiting protrusion 2 and the first locking part 4 or leave the position between the limiting protrusion 2 and the first locking part 4; a first elastic part 7 is provided on the movable part 3 or the first locking part 4, and the first elastic part 7 provides elastic force for the second locking part 6 to abut against the limiting protrusion 2; the second locking part 6 cooperates with the limiting part 5 to fit on both sides of the limiting protrusion 2 to limit the rotation of the movable part 3.

[0025] As shown in the figure, the fixed shaft 1 is fixed on the automobile frame, including the structure with a metal frame such as the rear seat frame, and the movable function is provided by rotating the movable part 3. For example, the armrest part of the rear seat can be rotated by the movable part 3. The limiting protrusion 2 can cooperate with the limiting part 5 on the movable part 3 to abut, and then the second locking part 6 is provided with elastic force through the first elastic part 7, and abuts on the limiting protrusion 2, and cooperates with the limiting part 5 to clamp, so as to achieve limiting, so that the movable part 3 is locked. The rotation of the first locking part 4 can bring the second locking part 6 in and out of the gap between the first locking part 4 and the limiting protrusion 2, thereby realizing the locking and unlocking of the movable part 3. The first elastic member 7 provides elastic force to the second locking member 6, so that it can be stably abutted against the limiting protrusion 2, and the elastic force presses the second locking member 6 against the limiting protrusion 2, which can react on the movable member 3 or the first locking member 4. At this time, the limiting member 5 can also abut against the limiting protrusion 2 more tightly. Based on this structure, the movable member 3 can reduce shaking and thus reduce abnormal noise. In addition, the first elastic member 7 and the second locking member 6 are used to eliminate the gap. The requirement for precision is also low, and the elastic force can be used to compensate for the precision problem. Therefore, the cost will not increase significantly, which has obvious advantages.

[0026] The second locking member 6 may be implemented in a columnar structure as shown in the figure, and the columnar structure can be easily moved.

[0027] In order to make the cooperation between the second locking member 6 and the first locking member 4 more stable and enable the second locking member 6 to drive the first locking member 4 to move when it rotates, a pushing portion 8 is also provided on the first locking member 4, and the first elastic member 7 and the pushing portion 8 act on both sides of the second locking member 6 respectively; when the first locking member 4 rotates to limit the rotation of the movable member 3, the elastic force of the first elastic member 7 pushes the second locking member 6 to move and abut against the limiting protrusion 2; when the first locking member 4 rotates to release the restriction of the movable member 3, the second locking member 6 is pushed by the pushing portion 8 and leaves the limiting protrusion 2.

[0028] The push part 8 and the first elastic member 7 act on both sides of the second locking member 6. When the first locking member 4 rotates, the second locking member 6 can be moved by the push part 8, so that it leaves the limiting protrusion 2, and the abutment effect can be released. At the same time, due to the movement of the second locking member 6, if the first elastic member 7 is connected to the movable member 3, the first elastic member 7 will accumulate elastic potential energy. The first elastic member 7 and the push part 8 can cooperate to form a clamping effect, so when the first locking member 4 rotates, the second locking member 6 can also move stably. After the first locking member 4 and the second locking member 6 are unlocked, the movable member 3 can rotate. When the first locking member 4 locks the movable member 3 with the second locking member 6, the movable member 3 is first reset, and the limiting member 5 is abutted against the limiting protrusion 2. At this time, the push part 8 does not provide a thrust to the second locking member 6, but the first elastic member 7 provides the elastic force for the second locking member 6 to move, so that the second locking member 6 abuts against the limiting protrusion 2, and cooperates with the limiting member 5 for clamping, and the locking of the movable member 3 is completed.

[0029] In a further configuration, in order to facilitate the movement of the second locking member 6 or improve the stability of the movement of the second locking member 6, a slide rail 9 for the movement of the second locking member 6 is provided on the movable member 3 or the first locking member 4, and in the locked state, one end of the slide rail 9 is away from the limiting protrusion 2, and the other end is close to the limiting protrusion 2.

[0030] One end of the slide rail 9 is away from the limiting protrusion 2, and the other end is close to the limiting protrusion 2. The second locking member 6 can move closer to the limiting protrusion 2 along the slide rail 9 under the action of elastic force until it abuts against the limiting protrusion 2, thereby reducing the requirement for accuracy. The accuracy problem can be overcome by allowing the second locking member 6 to slide along the slide rail 9. When the first locking member 4 rotates to drive the second locking member 6 away from the limiting protrusion 2, the second locking member 6 leaves the limiting protrusion 2 along the slide rail 9. The slide rail 9 can be set on the movable member 3 or the first locking member 4. Referring to the figure of this solution, it is set on the movable member 3.

[0031] More specifically, the slide rail 9 is located on the movable part 3, and a slider 10 for sliding with the slide rail 9 is provided at the end of the second locking part 6, and there is a gap between the slider 10 and the inner wall of the slide rail 9. Under the elastic force of the first elastic part 7, the second locking part 6 abuts against the side of the first locking part 4 and the limiting protrusion 2 at the same time.

[0032] The slide rail 9 is on the movable part 3, which can make the movement of the second locking part 6 more stable. The rotation of the first locking part 4 only needs to move the second locking part 6 on the slide rail 9, and there is no sliding fit relationship between the first locking part 4, which can make the work more stable. In addition, there is a gap between the slider 10 and the inner wall of the slide rail 9, which can allow the slider 10 to be in a relatively free moving state, such as moving up and down, left and right in the slide rail 9, which can further improve the error adaptation effect, especially by means of this relatively free moving state to cooperate with the first elastic part 7 to make the second locking part 6 abut against the first locking part 4 and the limiting protrusion 2 at the same time, and can use the supporting effect of the first locking part 4 to abut on the limiting protrusion 2, which has a more stable locking effect.

[0033] Preferably, the slide rail 9 is arc-shaped, and the outer convex surface of the arc corresponds to the limiting protrusion 2.

[0034] The arc-shaped slide rail 9 can better adapt to the pushing part 8. When the first locking member 4 rotates, the pushing part 8 moves on an arc-shaped track. Cooperating with the arc-shaped slide rail 9 can make it easier for the pushing part 8 to maintain cooperation with the second locking member 6, making the working state more stable.

[0035] In order to further improve the cooperation between the second locking member 6 and the limiting protrusion 2 , a groove 14 is provided on the second locking member 6 at a position for contacting the limiting protrusion 2 , and when the second locking member 6 abuts against the limiting protrusion 2 , the limiting protrusion 2 is located in the groove 14 .

[0036] The groove 14 on the second locking member 6 allows the limiting protrusion 2 to enter. On the one hand, the groove 14 can serve as a guide, and on the other hand, it can make the movement of the second locking member 6 more stable.

[0037] In addition, a second elastic member 11 is disposed on the first locking member 4 or the movable member 3 , and the second elastic member 11 is used to provide an elastic force for the first locking member 4 to rotate toward the limiting protrusion 2 .

[0038] The first locking member 4 can be driven by the second elastic member 11 so as to maintain a movement trend of rotating toward the limiting protrusion 2 , and can be reset by the second elastic member 11 after being unlocked.

[0039] Under the effect of this structure, the second elastic member 11 can be used to reset the movable member 3. During the reset of the movable member 3, the first elastic member 7 will move with the second locking member 6 to achieve locking. In other words, it has an automatic locking function.

[0040] In addition, in order to facilitate the positioning of the first locking member 4, an abutment portion 12 for abutting the limiting protrusion 2 is also provided on the first locking member 4. When the first locking member 4 rotates to limit the rotation of the movable member 3, the abutment portion 12 abuts against one side of the limiting protrusion 2; and the abutment portion 12, the second locking member 6, and the limiting member 5 form three contact points with the limiting protrusion 2, and the three contact points form a triangular distribution.

[0041] The abutment portion 12 on the first locking member 4 abuts against the limiting protrusion 2, so that the first locking member 4 can be stopped after being rotated to the right position, and has a supporting function in place. Moreover, the abutment portion 12, the second locking member 6, and the limiting member 5 form three abutments on the limiting protrusion 2, which has better stability. The first locking member 4 abuts against the limiting protrusion 2 through the elastic force of the second elastic member 11, which can make the first locking member 4 also in a more stable state, further reducing shaking and abnormal noise.

[0042] In addition, the limiter 5 is covered with a flexible sleeve 13, and the flexible sleeve 13 is in contact with the limiter protrusion 2. This arrangement can provide a buffering effect between the limiter 5 and the limiter protrusion 2, and can also have a certain absorption effect under vibration, thereby further alleviating the abnormal sound caused by vibration. The flexible sleeve 13 is one or more of sponge, rubber, silicone, and resin.

[0043] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A mechanically adjustable armrest lock, characterized in that: It includes a fixed shaft, a limiting protrusion fixedly connected to the side of the fixed shaft, a movable part rotatably installed on the fixed shaft, and a first locking part rotatably connected to the movable part, and the movable part rotates around the fixed shaft; a limiting part for abutting with the limiting protrusion is arranged on the movable part; a second locking part is connected to the first locking part, and the second locking part rotates with the first locking part to enter the position between the limiting protrusion and the first locking part or leave the position between the limiting protrusion and the first locking part, a first elastic part is arranged on the movable part or the first locking part, and the first elastic part provides elastic force for the second locking part to abut the limiting protrusion; the second locking part cooperates with the limiting part to fit on both sides of the limiting protrusion to limit the rotation of the movable part.

2. The mechanically adjustable armrest lock according to claim 1, characterized in that: The first locking member is also provided with a pushing portion, and the first elastic member and the pushing portion act on both sides of the second locking member respectively; when the first locking member rotates to limit the rotation of the movable member, the elastic force of the first elastic member pushes the second locking member to move and abut against the limiting protrusion; when the first locking member rotates to release the restriction of the movable member, the second locking member is pushed by the pushing portion and is carried away from the limiting protrusion.

3. The mechanically adjustable armrest lock according to claim 2, characterized in that: The movable member or the first locking member is provided with a slide rail for the second locking member to move, and in a locked state, one end of the slide rail is away from the limiting protrusion, and the other end is close to the limiting protrusion.

4. The mechanically adjustable armrest lock according to claim 3, characterized in that: The slide rail is located on the movable part, and a slider for sliding in cooperation with the slide rail is provided at the end of the second locking part, and there is a gap between the slider and the inner wall of the slide rail. Under the elastic force of the first elastic part, the second locking part simultaneously abuts against the side surface and the limiting protrusion of the first locking part.

5. The mechanically adjustable handrail lock according to claim 3 or 4, characterized in that: The slide rail is arc-shaped, and the outer convex surface of the arc corresponds to the limiting protrusion.

6. The mechanically adjustable handrail lock according to claim 2, 3 or 4, characterized in that: A groove is provided on the second locking member at a position for contacting the limiting protrusion, and when the second locking member abuts against the limiting protrusion, the limiting protrusion is located in the groove.

7. The mechanically adjustable handrail lock according to claim 2, 3 or 4, characterized in that: A second elastic member is disposed on the first locking member or the movable member, and the second elastic member is used to provide elastic force for the first locking member to rotate toward the limiting protrusion.

8. The mechanically adjustable armrest lock according to claim 7, characterized in that: The first locking member is also provided with an abutment portion for abutting against the limiting protrusion. When the first locking member rotates to limit the rotation of the movable member, the abutment portion abuts against one side of the limiting protrusion; and the abutment portion, the second locking member, the limiting member and the limiting protrusion form three contact points, and the three contact points form a triangular distribution.

9. The mechanically adjustable handrail lock according to claim 1, 2, 3 or 4, characterized in that: The limiting member is covered with a flexible sleeve, and abuts against the limiting protrusion through the flexible sleeve.

10. The mechanically adjustable armrest lock according to claim 9, characterized in that: The flexible cover is one or more of sponge, rubber, silicone and resin.

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