Safety seat cushion lock for vehicle

Abstract

The utility model relates to a vehicle safety seat cushion lock which comprises a fixing seat, a motor, a gear set mechanism and a driving block, the motor, the gear set mechanism and the driving block are installed in the fixing seat, the output end of the motor is in linkage with the gear set mechanism, a plurality of sets of teeth are arranged on the side edge of the driving block, the gear set mechanism is in meshing transmission with the driving block through the teeth, and a push rod is arranged above the driving block. The lower end of the pushing rod is fixedly connected with the driving block, a strip-shaped guide hole is formed in the upper portion of the fixing base, the middle of the pushing rod is inserted into the strip-shaped guide hole and is in clearance fit with the strip-shaped guide hole, the upper end of the pushing rod is in linkage with a locking assembly, the driving block is in linkage with a first spring, and the first spring is arranged in the direction parallel to the strip-shaped guide hole. According to the safety seat cushion lock for the vehicle, abrasion is reduced, the service life of the driving rod is prolonged, the failure risk is lower, and the situation that the spring gets loose cannot happen.

Description

Technical Field

[0001] The utility model specifically relates to a vehicle safety seat cushion lock. Background Art

[0002] With the popularization of modern means of transportation, electric vehicles and motorcycles have become important ways for people to travel daily. Seat cushion locks are generally equipped on such vehicles to control the opening and closing of the seat cushion.

[0003] For example, the Chinese utility model patent with the publication number "CN220081095U" proposes a seat cushion lock for electric vehicles or motorcycles. The seat cushion lock is composed of a fixed member, a locking assembly and an electric unlocking assembly. The fixed member is connected to the vehicle body and is provided with a locking tongue avoidance groove and a connecting portion. The locking assembly includes a locking plate and an unlocking plate, which are connected to the fixed member through a pin shaft, and are provided with a locking groove and an unlocking arm in cooperation. The unlocking spring is used to realize the switching between the locked state and the unlocked state. The electric unlocking assembly includes a housing, a driving motor and a driving block, which are connected through a gear pair. The driving rod pushes the unlocking plate to realize unlocking. At the same time, an overload protection spring and a limit retaining spring are provided to ensure the smooth movement of the driving rod and protect the motor.

[0004] Combined with paragraph 0032 of the specification of this published document and Figure 10, it can be clearly seen that there is a limit retaining spring between the driving block and the driving rod. The end of the limit retaining spring is inserted into the limit card slot on the outer periphery of the driving rod to realize the connection between the limit retaining spring and the driving rod. When unlocking, the driving block pushes the limit retaining spring to drive the driving rod to move towards the unlocking arm until the driving rod pushes the unlocking arm to complete unlocking.

[0005] The above transmission structure has the following technical problems:

[0006] Firstly, the continuous contact and sliding between the limit retaining spring and the driving rod will increase the wear of the outer surface of the driving rod and the limit retaining spring. Over time, it will reduce the service life of the driving rod, and at the same time increase the fatigue of the limit retaining spring and reduce the resilience of the limit retaining spring.

[0007] Secondly, the limit retaining spring and the driving rod are only linked through the limit card slot, and it is very easy to become loose. Once it becomes loose, the seat cushion lock will fail and the seat cushion cannot be opened. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide a vehicle safety seat cushion lock aiming at the deficiencies of the above-mentioned prior art, which reduces wear, extends the service life of the driving rod, has a lower failure risk, and will not occur the situation of spring loosening.

[0009] To achieve the above object, the utility model provides the following technical solutions:

[0010] Vehicle safety seat cushion lock, including a fixed seat and a motor, a gear set mechanism, and a driving block installed in the fixed seat. The output end of the motor is linked with the gear set mechanism. A number of groups of teeth are provided on the side of the driving block, and the gear set mechanism is engaged and driven with the driving block through the teeth. It is characterized in that: a push rod is provided above the driving block, the lower end of the push rod is fixedly connected with the driving block, a strip-shaped guide hole is provided above the fixed seat, the middle part of the push rod is inserted into the strip-shaped guide hole and the two are in clearance fit, the upper end of the push rod is linked with a locking assembly, the driving block is linked with a first spring, and the first spring is arranged along a direction parallel to the strip-shaped guide hole.

[0011] Adopting the above technical solution, by fixedly connecting the driving block and the push rod, the continuous contact and sliding between the driving block, the push rod and the spring in the prior art are avoided. The wear of the outer surface of the driving rod and the limit snap ring is reduced, the service life of the driving rod is prolonged, and the fatigue degree of the limit snap ring is reduced, maintaining good resilience. At the same time, compared with the prior art, the way of fixedly connecting the driving block and the push rod has a lower failure risk and the situation of spring loosening will not occur. Further designing the strip-shaped guide hole allows the push rod to move in a guided manner in the fixed seat, improving the accuracy and reliability of the unlocking mechanism. When the unlocking action occurs, the push rod can move smoothly in the strip-shaped guide hole to ensure that the locking assembly can be pushed and unlocked smoothly. The clearance fit design of the strip-shaped guide hole not only ensures the stability of the push rod but also allows it to move flexibly in the guide hole to avoid wear. Further, designing the first spring provides a restoring force, which is linked with the driving block and arranged along a direction parallel to the strip-shaped guide hole. After the unlocking action is completed, the first spring can help the push rod return to the initial position to ensure that the locking assembly can be reset quickly and accurately. This auxiliary force of the spring not only improves the response speed of the unlocking process but also helps to reduce the load on the motor and protect the motor from overload damage.

[0012] The above vehicle safety seat cushion lock can be further set as: a first strip-shaped guide groove parallel to the strip-shaped guide hole is provided in the fixed seat. A guide rib is provided on one side of the first strip-shaped guide groove facing the gear set mechanism. A slot adapted to the guide rib is provided below the driving block. One side of the driving block where the slot is located is inserted into the first strip-shaped guide groove. The first spring is installed in the first strip-shaped guide groove and the first spring is distributed between one end of the first strip-shaped guide groove and one end of the driving block. A second spring is also provided between the other end of the first strip-shaped guide groove and the other end of the driving block.

[0013] With the above technical solution, the first strip-shaped guiding groove is designed to facilitate the installation of the first spring and the second spring, and at the same time guide the first spring and the second spring during the telescopic change process to avoid skew. The guiding rib is added to guide the driving block and avoid the left and right skew of the driving block. The main function of the second spring is to prevent the driving block from moving excessively, reduce the damage caused by overload, and at the same time prevent the driving block from directly colliding with the end of the first strip-shaped guiding groove to protect both of them.

[0014] The above-mentioned vehicle safety seat cushion lock can be further set as follows: The locking assembly includes a pulling member and a mounting bracket fixedly installed on the vehicle body. A second strip-shaped guiding groove is provided in the middle of the pulling member. A third spring is provided in the second strip-shaped guiding groove. A reset plate is provided between the mounting bracket and the pulling member. The reset plate is inserted into the second strip-shaped guiding groove and the reset plate is detachably connected to the mounting bracket. One end of the third spring is in contact connection with the end of the second strip-shaped guiding groove, and the other end is in contact connection with the reset plate; A transmission block extending in front of the push rod is provided on the side of the pulling member. The push rod can push the pulling member to move along the axis direction of the strip-shaped guiding hole through the transmission block.

[0015] With the above technical solution, the driving block can push the pulling member to move horizontally through the transmission block. During the movement of the pulling member, the third spring will be compressed. Due to the effect of the reset plate, the third spring can be smoothly compressed. When the driving block resets, the third spring drives the pulling member to reset. Among them, the pulling member is mainly used to push and limit the locking member of the locking hook or directly link with the wire rope, which is determined according to the use scenario.

[0016] The above-mentioned vehicle safety seat cushion lock can be further set as follows: One end of the pulling member is provided with a push plate formed by bending. A first wire rope buckle is provided on the push plate. A wire rope guiding member parallel to the pulling member is provided on the side of the mounting bracket. One end of the wire rope guiding member is provided with a wire rope guiding plate formed by bending. A second wire rope buckle is provided on the wire rope guiding plate.

[0017] With the above technical solution, the wire rope guiding member is added, and the second wire rope buckle is provided on the wire rope guiding member. Cooperating with the first wire rope buckle on the push plate, the wire rope can be jointly pulled. When the motor fails, the pulling member can be controlled to move mechanically, and unlocking can also be achieved.

[0018] The above-mentioned vehicle safety seat cushion lock can be further set as follows: The mounting bracket includes a mounting plate and a limiting plate connected by screws. A U-shaped sliding hole channel formed by bending is provided in the middle of the mounting plate. The pulling member passes through the U-shaped sliding hole channel. The limiting plate is distributed on the side of the mounting plate and blocks the side of the U-shaped sliding hole channel. Through holes are provided on both the upper and lower sides of the U-shaped sliding hole channel. The upper end and the lower end of the reset plate are respectively inserted into the through holes, and a hook-shaped body is formed by bending at the upper end or the lower end of the reset plate.

[0019] With the above technical solution, the mounting bracket is divided into a mounting plate and a limiting plate, which facilitates the installation of components such as the pulling member, the reset plate, and the third spring. The "U-shaped sliding channel" facilitates the reciprocating movement of the pulling member. A hook-shaped body is arranged below the reset plate, which facilitates the fixed connection between the reset plate and the mounting plate.

[0020] The above-mentioned vehicle safety seat cushion lock can be further set as follows: The fixed seat includes a top cover, a component chamber, and a bottom cover. A gear mounting cavity and a motor mounting cavity for installing a motor are provided below the component chamber. A hinge hole runs through the middle of the component chamber. The gear set mechanism includes a main gear meshed and driven with the output end of the motor. The main gear is linked with a speed change gear set, and the speed change gear set is linked with a driven gear. The main gear and the speed change gear set are both distributed in the gear mounting cavity. The driven gear is distributed above the component chamber and meshes and drives with the teeth on the driving block. The bottom cover is distributed below the component chamber and is detachably connected to the component chamber by screws. The top cover is distributed above the component chamber and is detachably connected to the component chamber by screws. The strip-shaped guide hole is arranged on the top cover.

[0021] With the above technical solution, the fixed seat is divided into a split form of a top cover, a component chamber, and a bottom cover, which facilitates the installation and maintenance of components.

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0023] Figure 1 It is an exploded view of an embodiment of the present utility model;

[0024] Figure 2 It is a schematic diagram of a partial structure of an embodiment of the present utility model Figure 1 ;

[0025] Figure 3 It is an exploded view of a partial structure of an embodiment of the present utility model;

[0026] Figure 4 It is an exploded view of the fixed seat of an embodiment of the present utility model.

[0027] Label annotations: fixed seat 1, strip-shaped guide hole 1a, first strip-shaped guide groove 1b, guide rib 1c, top cover 1d, component compartment 1e, bottom cover 1f, gear installation cavity 1g, motor installation cavity 1h; motor 2, gear set mechanism 3, main gear 3a, variable speed gear set 3b, driven gear 3c; drive block 4, teeth 4a, slot 4b; push rod 5, first spring 6; locking component 7, pulling member 7a, second strip-shaped guide groove 7b, third spring 7c, reset plate 7d, transmission block 7e, push plate 7f, first cable tie 7g, cable guide 7h, second cable tie 7i, mounting plate 7j, limit plate 7k, U-shaped sliding channel 7m, connection hole 7n, hook 7p; second spring 8. Detailed implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1 to 4The vehicle safety seat lock shown includes a fixed seat 1, a motor 2, a gear set mechanism 3, and a driving block 4 installed in the fixed seat 1. The output end of the motor 2 is linked with the gear set mechanism 3. A number of sets of teeth 4a are provided on the side of the driving block 4, and the gear set mechanism 3 meshes and drives with the driving block 4 through the teeth 4a. A push rod 5 is provided above the driving block 4, and the lower end of the push rod 5 is fixedly connected to the driving block 4. A strip-shaped guide hole 1a is provided above the fixed seat 1. The middle part of the push rod 5 is inserted into the strip-shaped guide hole 1a and they are in clearance fit. The upper end of the push rod 5 is linked with a locking assembly 7. The driving block 4 is linked with a first spring 6, and the first spring 6 is arranged along the direction parallel to the strip-shaped guide hole 1a. By fixedly connecting the driving block 4 and the push rod 5, the continuous contact and sliding between the driving block 4, the push rod 5, and the spring in the prior art are avoided. The wear of the outer surface of the driving rod and the limit retaining ring is reduced, the service life of the driving rod is prolonged, the fatigue degree of the limit retaining ring is reduced, and good resilience is maintained. At the same time, compared with the prior art, the way of fixedly connecting the driving block 4 and the push rod 5 has a lower failure risk and the situation of spring loosening will not occur. The strip-shaped guide hole 1a is further designed to allow the push rod 5 to move in a guided manner in the fixed seat 1, improving the accuracy and reliability of the unlocking mechanism. When the unlocking action occurs, the push rod 5 can move smoothly in the strip-shaped guide hole 1a to ensure that the locking assembly 7 can be smoothly pushed to unlock. The clearance fit design of the strip-shaped guide hole 1a not only ensures the stability of the push rod 5 but also allows it to move flexibly in the guide hole to avoid wear. Further, the first spring 6 is designed to provide a restoring force. It is linked with the driving block 4 and is arranged along the direction parallel to the strip-shaped guide hole 1a. When the unlocking action is completed, the first spring 6 can help the push rod 5 return to the initial position to ensure that the locking assembly 7 can be quickly and accurately reset. This auxiliary force of the spring not only improves the response speed of the unlocking process but also helps to reduce the load of the motor 2 and protect the motor 2 from overload damage.

[0030] The fixing base 1 is provided with a first strip guide groove 1b parallel to the strip guide hole 1a. A guide rib 1c is located on the side of the first strip guide groove 1b facing the gear train mechanism 3. A slot 4b is provided below the driver block 4, which mates with the guide rib 1c. The driver block 4 is inserted into the first strip guide groove 1b on one side of the slot 4b. A first spring 6 is installed in the first strip guide groove 1b, extending between one end of the first strip guide groove 1b and one end of the driver block 4. A second spring 8 is provided between the other end of the first strip guide groove 1b and the other end of the driver block 4. The first strip guide groove 1b is designed to facilitate the installation of the first and second springs 6 and 8, while also guiding them during their expansion and contraction, preventing them from skewing. The additional guide rib 1c guides the driver block 4 while preventing it from skewing left or right. The second spring 8 primarily prevents excessive movement of the driver block 4, minimizing damage from overload. It also protects the driver block 4 from direct collision with the end of the first strip guide groove 1b.

[0031] The locking assembly 7 includes a pull member 7a and a mounting bracket fixedly mounted on the vehicle body. A second strip guide groove 7b is provided in the middle of the pull member 7a, and a third spring 7c is provided in the second strip guide groove 7b. A reset plate 7d is provided between the mounting bracket and the pull member 7a. The reset plate 7d is inserted into the second strip guide groove 7b and is detachably connected to the mounting bracket. One end of the third spring 7c is abutted against the end of the second strip guide groove 7b and the other end is abutted against the reset plate 7d. A transmission block 7e is provided on the side of the pull member 7a, extending to the front of the push rod 5. The push rod 5 can push the pull member 7a to move along the axis of the strip guide hole 1a through the transmission block 7e. The drive block 4 can push the pull member 7a to move laterally through the transmission block 7e. During the movement of the pull member 7a, the third spring 7c is squeezed. Due to the action of the reset plate 7d, the third spring 7c can be smoothly squeezed. When the drive block 4 is reset, the third spring 7c drives the pull member 7a to reset. Among them, the pulling member 7a is mainly used to push and limit the locking member of the lock hook or directly work with the pull wire, which is determined according to the usage scenario.

[0032] One end of the pull member 7a is provided with a bent push plate 7f, which is equipped with a first wire draw lock 7g. A wire guide 7h, parallel to the pull member 7a, is provided on the side of the mounting frame. One end of the wire guide 7h is provided with a bent wire guide plate, which is equipped with a second wire draw lock 7i. The addition of the wire guide 7h and the second wire draw lock 7i on the wire guide 7h work together with the first wire draw lock 7g on the push plate 7f to pull the wire. When the motor 2 fails, the pull member 7a can be mechanically controlled to move, and unlocking can also be achieved.

[0033] The mounting bracket includes a mounting plate 7j and a limiting plate 7k which are connected by screws. A bent U-shaped sliding channel 7m is provided in the middle of the mounting plate 7j. The pulling member 7a is passed through the U-shaped sliding channel 7m. The limiting plate 7k is distributed on the side of the mounting plate 7j and blocks the side of the U-shaped sliding channel 7m. Through holes 7n are provided on both the upper and lower sides of the U-shaped sliding channel 7m. The upper and lower ends of the reset plate 7d are respectively inserted into the through holes 7n, and a hook-shaped body 7p is formed by bending the upper or lower end of the reset plate 7d. Separating the mounting bracket into the mounting plate 7j and the limiting plate 7k facilitates the installation of components such as the pulling member 7a, the reset plate 7d, and the third spring 7c. The "U-shaped sliding channel 7m" facilitates the reciprocating movement of the pulling member 7a. The hook-shaped body 7p is provided below the reset plate 7d, facilitating the fixed connection between the reset plate 7d and the mounting plate 7j.

[0034] The fixed seat 1 includes a top cover 1d, a component cabin 1e, and a bottom cover 1f. A gear mounting cavity 1g and a motor mounting cavity 1h for mounting the motor 2 are provided below the component cabin 1e. A hinge hole runs through the middle of the component cabin 1e. The gear set mechanism 3 includes a main gear 3a meshing with the output end of the motor 2. The main gear 3a drives a gear speed change group 3b, and the gear speed change group 3b drives a driven gear 3c. The main gear 3a and the gear speed change group 3b are both distributed in the gear mounting cavity 1g. The driven gear 3c is distributed above the component cabin 1e and meshes with the teeth 4a on the driving block 4. The bottom cover 1f is distributed below the component cabin 1e and is detachably connected to the component cabin 1e by screws. The top cover 1d is distributed above the component cabin 1e and is detachably connected to the component cabin 1e by screws. The strip-shaped guide hole 1a is provided on the top cover 1d. Separating the fixed seat 1 into the split form of the top cover 1d, the component cabin 1e, and the bottom cover 1f facilitates the installation and maintenance of components.

[0035] Working principle: The motor 2 drives the gear set mechanism 3 to work. The gear set mechanism 3 drives the driving block 4 to move horizontally through the teeth 4a. Since the push rod 5 is fixedly connected to the driving block 4, the push rod 5 moves along the strip-shaped guide hole 1a and drives the pulling member 7a to move horizontally through the transmission block 7e, thereby achieving unlocking.

Claims

1. Vehicle safety seat lock, comprising a fixed seat and a motor, a gear set mechanism, and a driving block installed in the fixed seat. The output end of the motor is linked with the gear set mechanism. A plurality of sets of teeth are arranged on the side of the driving block, and the gear set mechanism is engaged and driven with the driving block through the teeth. It is characterized in that: A push rod is provided above the driving block, the lower end of the push rod is fixedly connected to the driving block, a strip guide hole is provided above the fixing seat, the middle part of the push rod is inserted into the strip guide hole and the two are clearance-matched, the upper end of the push rod is linked to a locking assembly, and the driving block is linked to a first spring, and the first spring is arranged in a direction parallel to the strip guide hole.

2. The vehicle safety seat lock according to claim 1, characterized in that: A first strip guide groove parallel to the strip guide hole is provided in the fixing seat, and a guide ridge is provided on the side of the first strip guide groove facing the gear set mechanism. A slot adapted to the guide ridge is provided under the driving block, and the driving block is located on one side of the slot and inserted into the first strip guide groove. The first spring is installed in the first strip guide groove and the first spring is distributed between one end of the first strip guide groove and one end of the driving block, and a second spring is also provided between the other end of the first strip guide groove and the other end of the driving block.

3. The vehicle safety seat lock according to claim 1, characterized in that: The locking assembly includes a pulling member and a mounting bracket fixedly mounted on the vehicle body, a second strip guide groove is provided in the middle of the pulling member, a third spring is provided in the second strip guide groove, a reset plate is provided between the mounting bracket and the pulling member, the reset plate is inserted into the second strip guide groove and the reset plate is detachably connected to the mounting bracket, one end of the third spring is in contact with the end of the second strip guide groove, and the other end is in contact with the reset plate; a transmission block is provided on the side of the pulling member extending to the front of the push rod, and the push rod can push the pulling member to move along the axis direction of the strip guide hole through the transmission block.

4. The vehicle safety seat lock according to claim 3, characterized in that: One end of the pulling member is provided with a bent pushing plate, and the pushing plate is provided with a first wire buckle. The side of the mounting frame is provided with a wire guide member parallel to the pulling member, and one end of the wire guide member is provided with a bent wire guide plate, and the wire guide plate is provided with a second wire buckle.

5. The vehicle safety seat lock according to claim 4, characterized in that: The mounting frame includes a mounting plate and a limiting plate connected by screws. A U-shaped sliding channel is provided in the middle of the mounting plate. The pulling member is passed through the U-shaped sliding channel. The limiting plates are distributed on the sides of the mounting plate and block the sides of the U-shaped sliding channel. Penetrating connecting holes are provided on the upper and lower sides of the U-shaped sliding channel. The upper and lower ends of the reset plate are respectively inserted into the connecting holes, and the upper or lower end of the reset plate is bent to form a hook-shaped body.

6. The vehicle safety seat lock according to any one of claims 1 to 5, characterized in that: The fixing seat includes a top cover, a component cabin, and a bottom cover. A gear installation cavity and a motor installation cavity for installing a motor are provided below the component cabin. A hinge hole is passed through the middle of the component cabin. The gear set mechanism includes a main gear that is meshed with the output end of the motor. The main gear is linked to a speed gear set, and the speed gear set is linked to a driven gear. The main gear and the speed gear set are both distributed in the gear installation cavity. The driven gear is distributed above the component cabin and the driven gear is meshed with the teeth on the drive block. The bottom cover is distributed below the component cabin and is detachably connected to the component cabin by screws. The top cover is distributed above the component cabin and is detachably connected to the component cabin by screws. The strip guide hole is arranged on the top cover.

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