Seat quick release device

Abstract

This utility model belongs to the field of small car seat technology, specifically a quick-release seat device, including a frame and a seat. The frame is located below the seat, and a step pin is fixedly installed on the base of the seat. An unlocking handle is installed on the bottom of the seat via the step pin, and one end of the unlocking handle is connected to a locking cable. The designed structure provides seat removal functionality while also considering ease of installation. When removing the seat, pulling the unlocking handle unlocks four telescopic locks simultaneously via the cable. When installing the seat, simply align the seat with the telescopic lock position, and the seat's own weight will lock it. This application uses a locking rod passing through the lock body, with a spring connecting the locking tongue. The head of the locking rod is threaded and screwed into the locking tongue, thus assembling a telescopic lock mechanism, reducing the number of parts, improving installation accuracy, and reducing processing difficulty.

Description

Technical Field

[0001] This utility model relates to the field of small car seat technology, specifically a quick-release seat device. Background Technology

[0002] Small mobility scooters or wheelchairs are compact in size, allowing them to maneuver easily in narrow streets, residential areas, and shopping malls. They are also easier to park and turn, requiring less space. These small mobility scooters or wheelchairs are primarily suitable for the elderly or those with mobility impairments.

[0003] Currently, most small mobility scooters or wheelchairs on the market have non-removable seats. Even the few detachable models are difficult to disassemble with a single click, making disassembly and assembly inconvenient. Furthermore, existing detachable seat vehicles often have monotonous and unattractive seat and frame designs. Therefore, this paper proposes a quick-release seat device to address these issues. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a quick-release seat device.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The quick-release seat device of this utility model includes a frame and a seat. The frame is located under the seat. A step pin is fixedly installed on the base of the seat. An unlocking handle is installed on the bottom of the seat through the step pin. One end of the unlocking handle is connected to a pull cable. The seat is provided with a lock body, a lock rod, a lock tongue, and a spring. The lock body is connected to the seat. The lock rod passes through the lock body and the spring and is connected to the lock tongue. Both ends of the spring are fixedly connected to the lock tongue and the lock body, respectively. One end of the lock rod is connected to the pull cable through the step pin.

[0006] Furthermore, the surface of the unlocking handle is provided with a groove, and one end of the pull cable is provided with a ball head, and the groove on the unlocking handle is connected to the ball head on the pull cable.

[0007] Furthermore, one end of the locking rod is threaded, and the inside of the locking tongue is provided with a threaded groove that matches the thread of the locking rod.

[0008] Furthermore, a round hole is provided at one end of the locking rod, and the locking rod is connected to the pull wire through the round hole.

[0009] Furthermore, one end of the lock body is inclined, and the angle between the inclined surface of the lock body and the inclined surface of the seat is 85°.

[0010] Furthermore, the unlocking handle is irregularly shaped, and its surface is made of a non-slip material.

[0011] Furthermore, the inside of the latch is provided with a groove, and one end of the locking rod is inserted into the groove of the latch.

[0012] Furthermore, the seat has a groove that matches the locking tongue and assists in the installation of the locking rod.

[0013] Furthermore, one side of the latch is inclined, and the inclined surface of the latch is on the same straight line as the inclined surface of the lock body.

[0014] Furthermore, the top of the locking tongue is in contact with the vehicle frame.

[0015] The advantages of this utility model are:

[0016] 1. This utility model utilizes an unlocking handle to move a cable, thus forming an unlocking mechanism. Moving the unlocking handle moves the cable, which pulls the locking lever and latch backward, simultaneously compressing the spring. After the latch exits the seat recess, the locking lever on the frame unlocks. The seat recess itself is designed with a locking lever installation guide angle to match the latch. The seat's own weight allows the latch to retract, and the locking lever on the frame enters the seat recess. Under the action of the spring, the latch returns to its original position, completing the locking of the seat and frame.

[0017] 2. This utility model, through its designed structure, not only enables seat disassembly but also considers ease of installation. When disassembling the seat, pulling the unlocking handle simultaneously unlocks all four telescopic locks via a cable. When installing the seat, simply align the seat with the telescopic lock position, and the seat's own weight will lock it in place. This application uses a locking rod passing through the lock body, with a spring connecting the locking tongue. The locking rod's head is threaded and screwed into the locking tongue, thus assembling a telescopic lock mechanism. This reduces the number of parts, improves installation accuracy, and lowers manufacturing difficulty. The telescopic locks and seat have added self-guiding features, providing convenience during seat installation. Compared to traditional folding wheelchairs, which are too heavy and inconvenient to transport, this design separates the seat and frame into two parts, reducing the weight of both parts for easier transport. Furthermore, the disassembled seat can be placed on the ground and used as a stool. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure from below in this utility model;

[0022] Figure 4 This utility model Figure 3 Schematic diagram of the structure viewed along section AA;

[0023] Figure 5 This utility model Figure 3 A schematic diagram of the structure viewed along the BB section.

[0024] In the picture: 1. Unlock handle; 2. Pull cable; 3. Step pin; 4. Lock body; 5. Lock bar; 6. Lock tongue; 7. Spring; 8. Frame; 9. Seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figure 1-5 As shown, a quick-release seat device includes a frame 8 and a seat 9. The frame 8 is located below the seat 9. A step pin 3 is fixedly installed on the base of the seat 9. An unlocking handle 1 is installed on the bottom of the seat 9 through the step pin 3. One end of the unlocking handle 1 is connected to a snap-fit ​​cable 2. The seat 9 is provided with a lock body 4, a lock rod 5, a lock tongue 6, and a spring 7. The lock body 4 is connected to the seat 9. The lock rod 5 passes through the lock body 4 and the spring 7 and is connected to the lock tongue 6. Both ends of the spring 7 are fixedly connected to the lock tongue 6 and the lock body 4, respectively. One end of the lock rod 5 is connected to the pull cable 2 through the step pin 3.

[0027] Specifically, the surface of the unlocking handle 1 has a groove, and one end of the pull cable 2 has a ball head, with the groove on the unlocking handle 1 connecting to the ball head on the pull cable 2. One end of the locking rod 5 has a thread, and the interior of the locking tongue 6 has a threaded groove that matches the thread of the locking rod 5. One end of the locking rod 5 has a round hole, through which the locking rod 5 connects to the pull cable 2. One end of the lock body 4 is inclined, with the inclined surface of the lock body 4 at an angle of 85° to the inclined surface of the seat 9. The unlocking handle 1 is irregularly shaped, and its surface is made of a non-slip material.

[0028] Specifically, the latch 6 has a groove inside, and one end of the locking rod 5 is inserted into the groove of the latch 6. The seat 9 also has a groove, which is designed to match the latch 6 and assists in guiding the locking rod 5 during installation. One side of the latch 6 is inclined, and the inclined surface of the latch 6 is on the same straight line as the inclined surface of the lock body 4. The top of the latch 6 fits against the frame 8.

[0029] During operation, it is important to note that the lock body 4, bolt 6, locking rod 5, and spring 7 are assembled to form a telescopic lock assembly. The cable 2 connects the unlocking handle 1 and the telescopic lock assembly as a single unit. When the unlocking handle 1 is moved, the cable 2 causes the bolt 6 to slide, disengaging it from the connecting shaft between the seat 9 and the frame 8, thus enabling quick disassembly of the seat 9 and frame 8. The lock body 4 is designed with an angled guide feature, allowing the seat 9 to push the bolt 6 backward without moving the unlocking handle 1, thereby locking the seat 9 and frame 8.

[0030] Moving the unlocking handle 1 moves the cable 2, thus forming the unlocking mechanism. Moving the unlocking handle 1 moves the cable 2, which pulls the locking lever 5 and the locking tongue 6 backward, simultaneously compressing the spring 7. After the locking tongue 6 exits the groove of the seat 9, the locking lever 5 on the frame 8 is unlocked. The groove of the seat 9 itself is designed with a guide angle for the locking lever 5 to match the locking tongue 6. The weight of the seat 9 itself can move the locking tongue 6 backward, and the locking lever 5 on the frame 8 enters the groove of the seat 9. Under the action of the spring 7, the locking tongue 6 returns to its original position, completing the locking of the seat 9 and the frame 8.

[0031] The structure designed in this application not only allows for the removal of the seat 9 but also considers ease of installation. When removing the seat 9, the unlocking handle 1 is pulled, and the four telescopic locks are unlocked simultaneously via the cable 2. When installing the seat 9, the seat 9 only needs to be aligned with the telescopic lock position, and the seat 9 locks itself using its own weight. This application uses a locking rod 5 that passes through the lock body 4 and spring 7 to connect to the locking tongue 6. The head of the locking rod 5 is threaded and screwed into the locking tongue 6, thus assembling a telescopic lock mechanism. This reduces the number of parts, improves installation accuracy, and reduces processing difficulty. The telescopic lock and seat 9 are equipped with self-guiding features, providing convenience for the seat 9 during installation. Compared to traditional folding wheelchairs, which are too heavy and inconvenient to move, the design of this application, which separates the seat 9 and frame 8 into two parts, reduces the weight of both parts for easier transport. Furthermore, the disassembled seat 9 can be placed on the ground and used as a stool.

[0032] Working principle: Moving the unlocking handle 1 moves the cable 2, which in turn pulls the locking lever 5 and the locking tongue 6 backward, simultaneously compressing the spring 7. After the locking tongue 6 exits the recess of the seat 9, the locking lever 5 on the frame 8 is unlocked. The recess of the seat 9 is designed with a guide angle for the locking lever 5 to match the locking tongue 6. The weight of the seat 9 itself allows the locking tongue 6 to retract, and the locking lever 5 on the frame 8 enters the recess of the seat 9. Under the action of the spring 7, the locking tongue 6 returns to its original position, thus locking the seat 9 and the frame 8.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A quick-release device for a seat, characterized in that: Includes a frame (8) and a seat (9), the frame (8) is located below the seat (9), the base of the seat (9) is fixedly installed with a step pin (3), the bottom of the seat (9) is installed with an unlocking handle (1) through the step pin (3), and one end of the unlocking handle (1) is connected to a snap-fit ​​cable (2); The seat (9) is provided with a lock body (4), a lock rod (5), a lock tongue (6) and a spring (7). The lock body (4) is connected to the seat (9). The lock rod (5) passes through the lock body (4) and the spring (7) and is connected to the lock tongue (6). The two ends of the spring (7) are fixedly connected to the lock tongue (6) and the lock body (4) respectively. One end of the lock rod (5) is connected to the pull line (2) through a step pin (3).

2. The quick-release device for a seat according to claim 1, characterized in that: The surface of the unlocking handle (1) is provided with a groove, and one end of the pull wire (2) is provided with a ball head. The groove on the unlocking handle (1) is connected to the ball head on the pull wire (2).

3. The quick-release device for a seat according to claim 1, characterized in that: One end of the locking rod (5) is threaded, and the inside of the locking tongue (6) is provided with a threaded groove that matches the thread of the locking rod (5).

4. A quick-release seat device according to claim 1, characterized in that: One end of the locking rod (5) has a round hole, and the locking rod (5) is connected to the pull wire (2) through the round hole.

5. A quick-release seat device according to claim 1, characterized in that: One end of the lock body (4) is inclined, and the angle between the inclined surface of the lock body (4) and the inclined surface of the seat (9) is 85°.

6. A quick-release seat device according to claim 1, characterized in that: The unlocking handle (1) is irregularly shaped, and the surface of the unlocking handle (1) is made of a non-slip material.

7. A quick-release seat device according to claim 1, characterized in that: The inside of the latch (6) is provided with a groove, and one end of the locking rod (5) is inserted into the groove of the latch (6).

8. A quick-release seat device according to claim 1, characterized in that: The seat (9) has a groove, which is designed to match the locking tongue (6) and is guided by the auxiliary locking rod (5).

9. A quick-release seat device according to claim 4, characterized in that: One side of the latch (6) is inclined, and the inclined surface of the latch (6) is on the same straight line as the inclined surface of the lock body (4).

10. A quick-release seat device according to claim 1, characterized in that: The top of the latch (6) is in contact with the frame (8).

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