Press type backrest lock

Abstract

The utility model discloses a pressing type backrest lock which comprises a lock shell used for being installed on an external frame, the lock shell is provided with a lock groove allowing an external automobile lock column to be placed therein, the lock shell is provided with a lock cavity communicated with the lock groove, the end of the lock shell is provided with an unlocking groove in the height direction of the lock shell, and an unlocking button is arranged in the unlocking groove in a sliding mode. A main shaft and a locking plate rotating in the axis direction of the main shaft are arranged in the lock cavity, the front end of the locking plate is bent to form a lock hook used for sealing an opening of the lock groove, a locking groove is formed in the bottom wall of the locking plate, a sliding block is movably arranged in the lock cavity, a pull rod is connected between the sliding block and the unlocking button, and a locking shaft used for being placed in the locking groove is arranged at the top of the sliding block. The end part of the locking shaft is made of a wear-resistant rubber material; and a return spring for driving the sliding block to return is arranged at the bottom of the sliding block. The seat backrest lock solves the problems that in the prior art, the number of parts of a seat backrest lock is large, a lock hook is prone to shaking, and noise is large.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a push-type backrest lock. Background Art

[0002] At present, in order to increase the storage space of the car, most seats are equipped with backrest locks to unlock or lock the seats, that is, the locking structure in the backrest lock cooperates with the car lock column to achieve the locking of the seat, and when the backrest lock is in the unlocked state, the seat can be laid down or turned over to expand the storage space when needed. However, the backrest lock in the prior art has a complex structure and many parts. The large number of parts leads to low assembly efficiency and the backrest lock is relatively bloated, so that the backrest lock occupies a large space, affecting the space inside the car and the installation space. At the same time, the lock hook in the backrest lock is prone to shaking during the driving of the car, and the shaking amount is large. When the lock hook shakes, it is easy to bump against the stop structure of the backrest lock and generate noise. Summary of the invention

[0003] In view of the shortcomings of the prior art, the utility model provides a push-type seat back lock to solve the problems in the prior art that the seat back lock has many parts, the lock hook is prone to shaking and the noise is large.

[0004] To achieve the above-mentioned purpose, the utility model provides a push-type backrest lock, including a lock shell for being installed on an external vehicle frame, the lock shell being provided with a lock slot for inserting an external vehicle lock column, the lock shell being provided with a lock cavity connected to the lock slot, the lock shell end being provided with an unlocking slot along the height direction of the lock shell, an unlocking button being slidably arranged in the unlocking slot, a main shaft and a locking plate rotating along the main shaft axis direction being arranged in the lock cavity, the front end of the locking plate being bent to form a lock hook for closing the lock slot opening, the locking slot being provided on the bottom wall of the locking plate, a slider being movably arranged in the lock cavity, a pull rod being connected between the slider and the unlocking button, a locking shaft for inserting into the locking slot being arranged on the top of the slider, the end of the locking shaft being made of wear-resistant rubber material, and a return spring for driving the slider to return to its position being arranged at the bottom of the slider.

[0005] The advantages of adopting the above technical solution are: when locking, the lock hook is located in the lock groove and closes the lock groove opening, so that the external car lock column is located in the lock groove. At this time, the end of the locking shaft is inserted into the locking groove to realize the activity limit of the locking plate, that is, the locking plate is locked, thereby realizing the locking of the lock hook. The return spring in the above technology is used to apply a force to the slider, and the force is applied to the locking shaft through the slider to achieve the stability of the locking shaft in the locking groove, thereby improving the locking strength; when unlocking is required, the user presses the unlocking button to move the unlocking button downward and drive the pull rod downward. At this time, the pull rod drives the slider downward to disengage the locking shaft from the locking groove. At this time, the locking shaft no longer limits the locking plate to achieve unlocking of the locking plate. After the locking plate is unlocked, the user pushes the seat to cause the seat to drive the lock shell to move, that is, the external car lock column will move relatively in the lock groove and push The unlocking hook makes the lock column disengage from the lock slot, thereby realizing unlocking of the seat; in the above-mentioned technology, the locking plate is limited by the cooperation of the locking shaft and the locking slot, thereby improving the locking strength, and at the same time, the end of the locking shaft is made of wear-resistant rubber material, so that when the locking shaft is inserted into the locking slot, the outer peripheral wall of the locking shaft contacts the inner peripheral wall of the locking slot, thereby reducing the shaking amount of the locking shaft when the vibration generated when the car is driving impacts the lock shell, and then reducing the shaking amount of the locking plate, thereby improving the stability and locking strength of the locking plate in the locked state, and at the same time, the end of the locking shaft is made of wear-resistant rubber material can also reduce the noise generated when the locking shaft cooperates with the locking slot and when locked; in the above-mentioned technology, the locking of the locking plate can be realized only by the setting of the locking shaft and the locking slot. Compared with the prior art that requires the setting of a large number of locking structures, the present technology has fewer parts and occupies less space, thereby improving assembly efficiency.

[0006] The utility model is further configured as follows: a locking groove is provided on the bottom wall of the locking plate, the locking groove is located on one side of the locking groove, the top wall of the slider is provided with a locking shaft for being inserted into the locking groove, the end of the locking shaft is made of wear-resistant rubber material, the bottom wall of the locking plate and the side wall of the locking plate are connected by a smooth curved surface and form an arc surface.

[0007] The benefits of adopting the above technical solution are: when the locking shaft and the locking groove cooperate to achieve locking, the locking shaft and the locking groove cooperate synchronously to achieve locking, and secondary locking is achieved by the setting of the locking shaft, thereby improving the locking strength of the locking shaft and the locking groove, and then improving the locking strength and locking efficiency of the locking plate; the setting of the arc surface in the above technology is used to enable the locking shaft and the locking shaft to contact the arc surface and move along the arc direction of the arc surface when the locking shaft is not locked, thereby improving the locking smoothness of the locking shaft and the locking shaft when locking is required.

[0008] The utility model is further configured as follows: the radial cross-sections of the locking shaft and the locking shaft ends are both truncated cone-shaped, the locking groove and the locking groove are both provided with anti-collision pads, the anti-collision pads are made of elastic material, the radial cross-sections of the anti-collision pads are truncated cone-shaped and the raised portions are arranged toward the direction of the slider.

[0009] The benefits of adopting the above technical solution are: the anti-impact pad in the above technology is used to reduce the impact force when the locking shaft and the locking shaft are locked, and at the same time improve the disengagement efficiency of the locking shaft and the locking shaft when the locking shaft and the locking shaft need to be released from the locked state, thereby improving the unlocking efficiency.

[0010] The utility model is further configured that: the bottom wall of the locking plate and the inner wall of the locking groove are connected by a smooth curved surface, and the bottom wall of the locking plate and the inner wall of the locking groove are connected by a smooth curved surface.

[0011] The benefits of adopting the above technical solution are: in the above technology, the bottom wall of the locking plate and the inner wall of the locking groove are connected by a smooth curved surface, and the bottom wall of the locking plate and the inner wall of the locking groove are connected by a smooth curved surface, so as to improve the smoothness of the insertion of the locking shaft and the locking shaft, thereby improving the locking efficiency and locking accuracy.

[0012] The utility model is further configured that: the horizontal plane at the opening of the locking groove is arranged parallel to the horizontal plane at the opening of the locking groove.

[0013] The benefit of adopting the above technical solution is that: in the above technology, the horizontal plane at the opening of the locking groove is arranged parallel to the horizontal plane at the opening of the locking groove, so that the horizontal plane at the opening of the locking groove and the horizontal plane at the opening of the locking groove are not in the same horizontal plane, that is, when performing the locking movement, one of the locking groove and the locking groove will perform the locking movement first, thereby improving the locking smoothness and locking efficiency.

[0014] The utility model is further configured as follows: a matching block is arranged in the lock cavity, the matching block is located below the slider and the matching block is arranged opposite to the slider, the return spring is located between the slider and the matching block, the starting end of the return spring is connected to the bottom wall of the slider, and the end of the return spring is connected to the top wall of the matching block.

[0015] The benefits of adopting the above technical solution are: the return spring in the above technology is used to apply a force to the slider, and the force applied by the return spring to the slider makes the locking shaft and the locking shaft always remain in a locked state, preventing the locking shaft from disengaging from the locking groove and the locking shaft from disengaging from the locking groove, thereby improving the locking strength and locking accuracy.

[0016] The utility model is further configured as follows: a guide shaft is extended from the top wall of the matching block toward the bottom wall of the slider, and an insertion groove for partially inserting the guide shaft is provided on the bottom wall of the slider corresponding to the position of the guide shaft.

[0017] The benefits of adopting the above technical solution are: the setting of the guide shaft in the above technology is used to position the slider and the sliding direction of the guide slider, so as to ensure the smooth locking cooperation of the locking shaft and the locking shaft, thereby improving the smoothness of the insertion of the locking shaft and the locking shaft, thereby improving the locking efficiency and locking accuracy, and the setting of partial plug-in cooperation between the guide shaft and the insertion groove to avoid the slider shaking or shifting to cause the locking shaft and the locking shaft to fail to lock, and at the same time avoid the slider shaking to cause the locking shaft and the locking shaft to generate noise when locking.

[0018] The utility model is further configured that: a return torsion spring for driving the locking plate to rotate and return to a position so that the lock hook is away from the opening of the lock slot is arranged on the main shaft.

[0019] The benefit of adopting the above technical solution is that the return torsion spring in the above technology is used to drive the locking plate to rotate and return when the locking plate is not locked by the locking shaft and the locking shaft, so as to ensure that the lock hook can disengage from the lock slot and open the lock slot, so that the car lock column can be smoothly placed in the lock slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the utility model;

[0021] Figure 2 This is a three-dimensional view of the utility model after removing part of the lock shell;

[0022] Figure 3 for Figure 2 3D view after removing the locking plate;

[0023] Figure 4 It is a three-dimensional view from the bottom perspective of the locking plate in the utility model. DETAILED DESCRIPTION

[0024] The utility model provides a push-type backrest lock, including a lock shell 1 for being installed on an external vehicle frame, the lock shell 1 is provided with a lock slot 11 for inserting an external vehicle lock column, the lock shell 1 is provided with a lock cavity connected with the lock slot 11, an unlocking slot 11 is provided at the end of the lock shell 1 along the height direction of the lock shell 1, an unlocking button 2 is slidably provided in the unlocking slot 11, a main shaft 3 and a locking plate 31 rotating along the axial direction of the main shaft 3 are provided in the lock cavity, a front end of the locking plate 31 is bent to form a lock hook 32 for closing the opening of the lock slot 11, a locking slot 311 is provided on the bottom wall of the locking plate 31, and a movable locking button 2 is provided in the lock cavity. There is a slider 4, a pull rod 21 is connected between the slider 4 and the unlocking button 2, a locking shaft 41 for inserting into the locking groove 311 is arranged on the top of the slider 4, the end of the locking shaft 41 is made of wear-resistant rubber material, a return spring 5 for driving the slider 4 to return is arranged at the bottom of the slider 4, a locking groove 312 is opened on the bottom wall of the locking plate 31, the locking groove 312 is located on one side of the locking groove 311, a locking shaft 42 for inserting into the locking groove 312 is arranged on the top wall of the slider 4, the end of the locking shaft 42 is made of wear-resistant rubber material, and a smooth curved surface is formed between the bottom wall of the locking plate 31 and the side wall of the locking plate 31 The locking groove 312 and the locking groove 311 are both provided with an anti-collision pad 34, and the anti-collision pad 34 is made of elastic material, and the radial cross-section of the anti-collision pad 34 is truncated cone-shaped and its bulge is arranged in the direction of the slider 4. The bottom wall of the locking plate 31 and the inner wall of the locking groove 312 are connected and arranged with a smooth curved surface, and the bottom wall of the locking plate 31 and the inner wall of the locking groove 311 are connected and arranged with a smooth curved surface. The horizontal plane at the opening of the locking groove 312 is parallel to the horizontal plane at the opening of the locking groove 311, and the lock cavity A matching block 51 is provided in the middle, and the matching block 51 is located below the slider 4 and the matching block 51 is arranged opposite to the slider 4, the return spring 5 is located between the slider 4 and the matching block 51, the starting end of the return spring 5 is connected to the bottom wall of the slider 4, and the end of the return spring 5 is connected to the top wall of the matching block 51, and a guide shaft 52 extends from the top wall of the matching block 51 toward the bottom wall of the slider 4, and an insertion groove for partially inserting the guide shaft 52 is opened on the bottom wall of the slider 4 corresponding to the position of the guide shaft 52, and a return torsion spring 35 for driving the locking plate 31 to rotate and return so that the lock hook 32 is away from the opening of the lock groove 11 is provided on the main shaft 3.

[0025] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A push-type backrest lock, comprising a lock shell for installation on an external vehicle frame, the lock shell is provided with a lock slot for inserting an external vehicle lock column, the lock shell is provided with a lock cavity connected to the lock slot, an unlocking slot is provided at the end of the lock shell along the height direction of the lock shell, an unlocking button is slidably provided in the unlocking slot, a main shaft and a locking plate rotating along the main shaft axis direction are provided in the lock cavity, a lock hook for closing the lock slot opening is formed at the front end of the locking plate, and the characteristics are: A locking groove is provided on the bottom wall of the locking plate, a slider is movably provided in the lock cavity, a pull rod is connected between the slider and the unlocking button, a locking shaft for being inserted into the locking groove is provided on the top of the slider, the end of the locking shaft is made of wear-resistant rubber material, and a return spring for driving the slider to return is provided at the bottom of the slider.

2. A push-type backrest lock according to claim 1, characterized in that: A locking groove is provided on the bottom wall of the locking plate, and the locking groove is located on one side of the locking groove. A locking shaft for being inserted into the locking groove is provided on the top wall of the slider, and the end of the locking shaft is made of wear-resistant rubber material. The bottom wall of the locking plate and the side wall of the locking plate are connected by a smooth curved surface and form an arc surface.

3. A push-type backrest lock according to claim 2, characterized in that: The radial cross-sections of the ends of the locking shaft and the locking shaft are both truncated cone-shaped, and anti-collision pads are provided in the locking groove and the locking groove. The anti-collision pads are made of elastic material, and the radial cross-sections of the anti-collision pads are truncated cone-shaped and the raised parts are arranged toward the direction of the slider.

4. A push-type backrest lock according to claim 2, characterized in that: The bottom wall of the locking plate and the inner wall of the locking groove are connected in a smooth curved surface, and the bottom wall of the locking plate and the inner wall of the locking groove are connected in a smooth curved surface.

5. The push-type backrest lock according to claim 2, characterized in that: The horizontal plane at the opening of the locking groove is arranged parallel to the horizontal plane at the opening of the locking groove.

6. The push-type backrest lock according to claim 1, characterized in that: A matching block is arranged in the lock cavity, the matching block is located below the slider and is arranged opposite to the slider, the return spring is located between the slider and the matching block, the starting end of the return spring is connected to the bottom wall of the slider, and the end of the return spring is connected to the top wall of the matching block.

7. The push-type backrest lock according to claim 6, characterized in that: A guide shaft is extended from the top wall of the matching block toward the bottom wall of the slider, and an insertion groove for partially inserting the guide shaft is provided on the bottom wall of the slider corresponding to the position of the guide shaft.

8. The push-type backrest lock according to claim 1, characterized in that: The main shaft is provided with a return torsion spring for driving the locking plate to rotate and return so that the lock hook is away from the opening of the lock slot.

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