An ISOFIX connector

Abstract

The present invention belongs to the technical field of child safety seats, and specifically relates to an ISOFIX connector, including a housing, an ISOFIX connection component, a flexible traction component, a first locking member, and an ISOFIX connection component reset device. The ISOFIX connection component is slidably arranged in the housing, including a connection component housing, a movable member, a roller, a first locking member, a first locking member reset device, and a hook; one end of the flexible traction component passes around the roller and is fixed in the ISOFIX connection component, and the other end thereof extends from the ISOFIX connection component, so that the movable member, the roller, and the flexible traction component together form a movable pulley. The present invention uses a movable pulley structure so that the pulling force only needs half of the unlocking force, thereby increasing the design space of the designer. By setting a second locking member, the ISOFIX connection component will be reset toward the direction of the connection joint by the ISOFIX connection component reset device only after the movable member is further moved away from the connection joint after the unlocking state, which adds new options for operation.

Description

Technical Field

[0001] The invention belongs to the technical field of child safety seats, and in particular relates to an ISOFIX connector. Background Art

[0002] A child safety seat is a seat that is attached to a car seat for children to sit on, and the child is restrained in the child safety seat by a restraining device to ensure the child's safety. Since the use of child safety seats can minimize the damage to children in the event of emergency braking or accidental collision of the car, child safety seats are quickly accepted by consumers and gradually promoted around the world. With the widespread use of child safety seats in cars, new requirements are put forward for the fixing mechanism used to fix child safety seats, and the ISOFIX fixing mechanism is based on such an environment.

[0003] At present, most of the existing ISOFIX connection devices are directly pushed and pulled, and the opening and closing of the hooks are pushed by the buttons, springs and internal components on the ISOFIX head. For example, the utility model patent with patent application number CN201520542985.0 discloses an installation and adjustment device for a car child safety seat. In this patent, the release cord is directly connected to the crocodile mouth. When the release cord is pulled, the crocodile mouth will open, and the crocodile mouth will bite without pulling. The force applied by the application to unlock the crocodile mouth is provided by the force of pulling the release cord. Ideally, the force of pulling the cord needs to overcome the force of the spring when unlocking the crocodile mouth, but in actual operation, due to the influence of other factors such as friction, a greater force needs to be applied, which makes it difficult to control the adjustment of the force required to open and close the crocodile mouth, and the error range is large, making it difficult to ensure a unified user experience. Moreover, there is no correlation between the action of unlocking the crocodile mouth and the position of the crocodile mouth connecting pipe in this solution. It is controlled by two independent control systems, and the operation is relatively cumbersome. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a new ISOFIX connector, which can more conveniently, effectively and accurately adjust the force used to pull the hook compared to the prior art.

[0005] The specific technical solutions of the present invention are as follows:

[0006] An ISOFIX connector comprises a housing, an ISOFIX connection assembly, a flexible traction assembly, a first locking member and an ISOFIX connection assembly resetting device, wherein the housing is provided with a gear hole;

[0007] The ISOFIX connection component reset device is connected to the ISOFIX connection component, and the ISOFIX connection component reset device has a tendency to move the ISOFIX connection component toward the connection joint;

[0008] The ISOFIX connection assembly is slidably disposed in the housing, and includes a connection assembly housing, a movable member, a roller, a first locking member, a first locking member resetting device, and a hook;

[0009] The first locking member is axially arranged on the connecting component housing, and the first locking member can be driven by the movable member to exit the gear hole;

[0010] The first locking member resetting device acts on the first locking member, so that the first locking member extends into the gear hole, and the ISOFIX connection assembly can only move in a direction away from the connection joint;

[0011] The hook shaft is arranged on the connecting component housing, and the hook can be locked with or separated from the connecting joint;

[0012] The movable member is slidably disposed in the connecting component housing and can drive the hook and the first locking member;

[0013] The roller is rotatably arranged on the movable member;

[0014] One end of the flexible traction component passes around the roller and is fixed in the ISOFIX connection component, and the other end thereof extends out from the ISOFIX connection component, so that the movable part, the roller and the flexible traction component together form a movable pulley.

[0015] The ISOFIX connection assembly further comprises a fixing part fixed on the connection assembly housing, the flexible traction assembly is fixed on the fixing part, and when in the unlocked state, the fixing part limits the movable part.

[0016] Among them, the hook includes a hook groove, a locking part and a locking part, and the movable part is provided with a hook locking part. When transitioning from an unlocked state to a locked state, the connecting joint on the car can push the locking part on the hook to rotate it, so that the hook is locked with the connecting joint through the hook groove; the hook locking part cooperates with the locking part to keep the hook in a locked state.

[0017] Wherein, the hook has a dead point position, and in the unlocked state, the hook locking piece cooperates with the hook, and the hook returns to the locked state.

[0018] Wherein, the ISOFIX connection component also includes a second locking member, which is arranged in the ISOFIX connection component, and the second locking member has a pawl, and a backstop hole is arranged on the shell corresponding to the pawl. The second locking member is driven by the movable member, and the pawl can extend into or withdraw from the backstop hole.

[0019] The second locking member can only move up and down in the vertical direction of the ISOFIX connection assembly, a groove is provided on the second locking member, and a limiting column is provided on the movable member, and the limiting column can move along the groove.

[0020] Wherein, the groove is V-shaped or triangular.

[0021] Wherein, a connection component fixing device is also provided outside the ISOFIX connection component, including a front fixing block and a rear fixing block, which are respectively sleeved on the two ends of the ISOFIX connection component.

[0022] Wherein, a flexible traction component fixing device is provided at the end of the shell away from the connecting joint, and the flexible traction component passes through the flexible traction component fixing device and is fixed thereby.

[0023] Wherein, the ISOFIX connection component also includes an unlocking spring, one end of the unlocking spring is connected to the hook, and the other end is connected to the movable part, and the flexible traction component is a steel wire.

[0024] Beneficial Effects

[0025] The present invention uses a movable pulley structure so that the pulling force only needs half of the unlocking force, which increases the design space of designers. By providing a second locking member, when in the unlocked state, the ISOFIX connection component will not immediately move in the direction of the connection joint, but after the movable member is further moved away from the connection joint after the unlocked state, the ISOFIX connection component will be reset in the direction of the connection joint by the ISOFIX connection component reset device, which adds a new option for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the present invention

[0027] Figure 2 Schematic diagram of the present invention with the housing removed

[0028] Figure 3 Explosion diagram of the present invention

[0029] Figure 4 Schematic diagram of ISOFIX connection components

[0030] Figure 5 Exploded view of ISOFIX connection components

[0031] Figure 6 Schematic diagram of the ISOFIX connection component in the unlocked state

[0032] Figure 7 Schematic diagram of the ISOFIX connection component in the locked state

[0033] Among them, 1 is a shell, 12 is a reset device of the ISOFIX connection component, 2 is an ISOFIX connection component, 3 is a flexible traction component, 4 is a connecting joint, 51 is a hook, 52 is a hook locking member, 53 is an unlocking spring, 54 is a movable member, 541 is a limiting column, 55 is a roller, 56 is a fixing member, 561 is a movable member reset device, 57 is a first locking member, 571 is a first locking member reset device, 58 is a second locking member, 581 is a pawl, 582 is a groove, 59 is a second locking member reset spring, 510 is a snap-in groove, 511 is a locking portion, and 512 is a locking portion. DETAILED DESCRIPTION

[0034] Definition: When the ISOFIX connector of the present invention is locked with the connecting joint on the vehicle, it is in a locked state; when the ISOFIX connector is separated from the connecting joint on the vehicle, it is in an unlocked state.

[0035] like Figure 1 , Figure 2 As shown, the ISOFIX connector of the present invention comprises a housing 1, an ISOFIX connection assembly 2, a flexible traction assembly 3, a first locking member 57 and an ISOFIX connection assembly resetting device 12.

[0036] In this embodiment, the housing 1 is a hollow long strip structure, the housing 1 is open toward the end of the connecting joint 4 on the car, and a gear hole is provided on the housing 1;

[0037] In this embodiment, the ISOFIX connection component reset device 12 is arranged in the housing 1 and abuts against the ISOFIX connection component 2, and the ISOFIX connection component reset device 12 has a tendency to move the ISOFIX connection component 2 toward the connection joint 4;

[0038] The ISOFIX connection assembly 2 is slidably disposed in the housing 1. Figure 3 As shown, it includes a long strip-shaped connecting component housing 23, a movable member 54, a roller 55, a first locking member 57, a first locking member resetting device 571 and a hook 51;

[0039] The first locking member 57 is axially arranged on the connecting assembly housing 23, and the first locking member 57 can be driven by the movable member 54 to exit the gear hole;

[0040] The first locking member resetting device 571 acts on the first locking member 57, and the first locking member 57 extends into the gear hole, so that the ISOFIX connection assembly 2 can only move in a direction away from the connection joint 4;

[0041] The hook 51 is axially arranged on the connecting assembly housing 23, and the hook 51 can be driven by the movable member 54 to be separated from the connecting joint 4 on the vehicle, or the hook 51 is driven by the connecting joint 4 to lock the hook 51 with the connecting joint 4;

[0042] The movable member 54 is slidably disposed in the connecting assembly housing 23 and can drive the hook 51 and the first locking member 57;

[0043] The roller 55 is rotatably arranged on the movable member 54;

[0044] One end of the flexible traction component 3 passes over the roller 55 and is fixed in the ISOFIX connection component 2, and the other end thereof extends from the ISOFIX connection component 2, so that the movable part 54, the roller 55, and the flexible traction component 3 together form a movable pulley.

[0045] According to the usage scenario of ISOFIX, when the ISOFIX connector is in a locked state, the position of the ISOFIX connection component 2 is fixed, and the flexible traction component 3 is pulled at this time. The roller 55, the movable part 54, and the flexible traction component 3 of the present invention together constitute a movable pulley, so that the pulling force only needs half of the force required for unlocking. This design method can give designers a larger adjustment space, for example, the force required to unlock the hook 51 can be increased, thereby improving the stability of the ISOFIX connection. If the existing technology is used, the force to pull the flexible traction component 3 must also be increased by the same amount, but by using the present invention, the force to pull the flexible traction component 3 is only increased by half.

[0046] Specifically, in this embodiment, Figure 4 As shown, the ISOFIX connection assembly 2 further includes an unlocking spring 53, one end of which is connected to the hook 51, and the other end of which is connected to the movable member 54. By pulling the movable member 54, the unlocking spring 53 pulls the hook 51 and unlocks it.

[0047] Specifically, in this embodiment, the flexible traction component 3 can be a steel wire.

[0048] Among them, preferably Figure 3 , Figure 4 , Figure 5As shown, the ISOFIX connection component 2 also includes a fixing member 56 fixed on the connection component housing 23, and the flexible traction component 3 is connected to the fixing member 56. Further preferably, in the unlocked state, the fixing member 56 can also limit the range of motion of the movable member 54. Furthermore, a movable member reset device 561 is also provided on the fixing member 56, and one end of the movable member reset device 561 is connected to the fixing member 56, and the other end is in conflict with the movable member 54. Therefore, after the movable member 54 is limited by the fixing member 56, the movable member reset device 561 can move it in the opposite direction. In addition, by adding the movable member reset device 561, the force required to unlock the hook 51 can also be increased.

[0049] Specifically, in this embodiment, Figure 6 As shown, the hook 51 includes a clamping groove 510, a locking portion 511 and a locking portion 512, and the movable member 54 is provided with a hook locking member 52. When the unlocked state is transitioned to the locked state, the connecting joint 4 on the vehicle can push the locking portion 511 on the hook 51 to rotate, so that the hook 51 is locked with the connecting joint 4 through the clamping groove 510, and the hook locking member 52 cooperates with the locking portion 512, so that the hook 51 is maintained in the locked state. Figure 6 As shown, the hook 51 has a dead point position. In the unlocked state, the hook locking member 52 cooperates with the hook 51 so that the movable member 54 cannot return the hook 51 to the locked state. Specifically, in this embodiment, the hook locking member 52 is a plug plate, and the locking portion 512 is a slot.

[0050] Among them, preferably Figure 3 , Figure 5 As shown, the ISOFIX connection component 2 also includes a second locking member 58, and the second locking member 58 is arranged in the ISOFIX connection component 2. The second locking member 58 has a pawl 581. A backstop hole is provided on the housing 1 corresponding to the pawl 581, and the pawl 581 is driven by the movable member 54 to extend into or out of the backstop hole. First, in the locked state, the pawl 581 of the second locking member 58 withdraws from the backstop hole, so that the ISOFIX connection component 2 can slide in the housing 1. When transitioning from the locked state to the unlocked state, the pawl 581 is driven by the movable member 54 to extend into the backstop hole, and the ISOFIX connection component 2 is stationary in the housing 1. At this time, since the hook 51 is already in the dead point position, even if the flexible traction component 3 is released, the ISOFIX connection component 2 remains stationary. Further pulling the movable member 54, the movable member 54 drives the second locking member 58 to make its pawl 581 withdraw from the backstop hole again, and the ISOFIX connection component 2 can slide in the housing 1 again. Specifically, as Figure 5 , Figure 6 , Figure 7 As shown, in this embodiment, the second locking member 58 cannot move left and right, and can only move up and down in the vertical direction in the ISOFIX connection assembly 2. A groove 582 is provided on the second locking member 58, and a limiting column 541 is provided on the movable member 54. The limiting column 541 can move along the groove 582.

[0051] Obviously, the groove 582 has various forms, such as a V-shape. Figure 6 As shown, in this embodiment, the groove 582 is triangular, and the second locking member 58 is further provided with a second locking member return spring 59. The second locking member return spring 59 can push the pawl 581 of the second locking member 58 into the limit hole when the limit column 541 is at the top corner of the triangular groove. Figure 7 The figure shows a locked state, in which the groove 582 is limited by the limiting post 541, the limiting post 541 is located at the lower left corner of the groove 582, and the pawl 581 of the second locking member 58 is withdrawn from the stop hole; Figure 6 The figure shows an unlocked state, in which the movable member 54 moves to the right in the figure away from the connecting joint 4, the groove 582 is limited by the limiting column 541, the limiting column 541 is at the top corner of the groove 582, and the pawl 581 of the second locking member 58 extends into the anti-retraction hole; and when the movable member 54 moves further away from the connecting joint 4, the second locking member 58 is affected by the limiting column 541, the limiting column 541 is at the lower right corner of the groove 582, and the pawl 581 exits the anti-retraction hole again.

[0052] In order to improve the integrity of the ISOFIX connection component 2, the ISOFIX connection component 2 is also provided with a connection component fixing device. Specifically, in this embodiment, the connection component fixing device is as follows: Figure 2 As shown, it includes a front fixing block 21 and a rear fixing block 22, which are respectively sleeved on the two ends of the ISOFIX connection component 2.

[0053] In order to improve the stability of the flexible traction component 3, a flexible traction component fixing device 11 is provided at the end of the housing 1 away from the connecting joint 4, and the flexible traction component 3 passes through the flexible traction component fixing device 11 and is fixed therein.

[0054] In summary, when the present invention is used, it is assumed that it is first matched with the connecting joint in a locked state, at which time the limit column 541 is located at the end of the groove 582 closest to the connecting joint, the second locking member 58 does not extend out of the housing 1, and the first locking member 57 is extended into the shift hole by the action of the first locking member reset device 571. At this time, the ISOFIX connection assembly 2 can only move in a direction away from the connecting joint. In this way, the safety seat of the ISOFIX connector in the locked state can only be tightly locked and close to the car seat.

[0055] Next, the flexible traction component 3 is pulled from the locked state to the unlocked state, and the movable part 54 is moved away from the connecting joint 4. The unlocking spring 53 drives the hook 51 to rotate, and at the same time, the hook locking part 52 follows the movable part 54 to move out of the locking part 512 of the hook 51, and the present invention is in the unlocked state. Due to the change in the position of the movable part 54, the limit column 541 moves from the original position to the triangular vertex of the groove 582, and the second locking part 58 is extended into the stop hole by the action of the second locking part reset spring 59. At this time, even if the flexible traction component 3 is released, the hook 51 will not return to the locked state because the hook 51 is already in the dead point position, so the position of the ISOFIX connection component 2 is fixed again. Such a setting can bring a clear feel when unlocking, and the difference between the unlocked state and the locked state will not be particularly contrasting.

[0056] Further pull the flexible traction component 3, the movable part 54 moves further away from the connection joint, the limiting column 541 moves to the end of the groove 582 of the second locking member 58 farthest from the connection joint, and the second locking member 58 withdraws from the stop hole. At this time, the movable part 54 acts on the first locking member 57, so that the first locking member 57 also withdraws from the gear hole. At this time, the ISOFIX connection component 2 can no longer only move away from the connection joint 4, but can also move toward the connection joint 4. At this time, the flexible traction component 3 is released, the ISOFIX connection component 2 is acted on by the ISOFIX connection component reset device 12, and the movable part 54 is acted on by the movable part reset device 561. The limiting column 541 is located at the top of the groove 582 again, the first locking member 57 and the second locking member 58 extend into the gear hole and the stop hole respectively, and the position of the ISOFIX connection component 2 is fixed again. With this arrangement, the ISOFIX connector can be fully retracted for easy transportation.

[0057] When unlocking, the connecting joint is inserted into the hook 51, the connecting joint 4 pushes the locking part 511, the hook 51 rotates, the movable part 54 is acted upon by the movable part resetting device 561, and the hook locking part 52 extends into the locking part 512, so that the clamping groove 510 firmly clamps the connecting joint.

Claims

1. An ISOFIX connector, characterized in that: It comprises a housing (1), an ISOFIX connection assembly (2), a flexible traction assembly (3), a first locking member (57) and an ISOFIX connection assembly resetting device (12), wherein the housing (1) is provided with a gear hole; The ISOFIX connection component reset device (12) is connected to the ISOFIX connection component (2), and the ISOFIX connection component reset device (12) has a tendency to make the ISOFIX connection component (2) move in the direction of the connection joint (4); The ISOFIX connection assembly (2) is slidably arranged in the housing (1), and comprises a connection assembly housing (23), a movable member (54), a roller (55), a first locking member (57), a first locking member resetting device (571) and a hook (51); The first locking member (57) is axially arranged on the connecting component housing (23), and the first locking member (57) can be driven by the movable member (54) to exit the gear hole; The first locking member resetting device (571) acts on the first locking member (57) to cause the first locking member (57) to extend into the gear hole, so that the ISOFIX connection assembly (2) can only move in a direction away from the connection joint (4); The hook (51) is axially arranged on the connecting component housing (23), and the hook (51) can be locked with or separated from the connecting joint (4); The movable member (54) is slidably disposed in the connecting component housing (23) and can drive the hook (51) and the first locking member (57); The roller (55) is rotatably arranged on the movable member (54); One end of the flexible traction component (3) passes over the roller (55) and is fixed in the ISOFIX connection component (2), and the other end thereof extends out from the ISOFIX connection component (2), so that the movable part (54), the roller (55) and the flexible traction component (3) together form a movable pulley.

2. The connector according to claim 1, characterized in that: The ISOFIX connection component (2) further comprises a fixing member (56) fixed on the connection component housing (23), the flexible traction component (3) being fixed on the fixing member (56), and when in an unlocked state, the fixing member (56) limits the movable member (54).

3. The connector according to claim 1, characterized in that: The hook (51) comprises a hooking groove (510), a locking portion (511) and a locking portion (512); the movable part (54) is provided with a hook locking portion (52); when transitioning from an unlocked state to a locked state, the connecting joint (4) on the vehicle can push the locking portion (511) on the hook (51) to rotate, so that the hook (51) is locked with the connecting joint (4) through the hooking groove (510); the hook locking portion (52) and the locking portion (512) cooperate with each other, so that the hook (51) is maintained in the locked state.

4. The connector according to claim 3, characterized in that: The hook (51) has a dead point position. When in an unlocked state, the hook locking piece (52) cooperates with the hook (51), and the hook (51) returns to a locked state.

5. The connector according to claim 1, characterized in that: The ISOFIX connection assembly (2) further comprises a second locking member (58), wherein the second locking member (58) is arranged in the ISOFIX connection assembly (2), the second locking member (58) has a pawl (581), a stop hole is arranged on the housing (1) corresponding to the pawl (581), the second locking member (58) is driven by the movable member (54), and the pawl (581) can extend into or withdraw from the stop hole.

6. The connector according to claim 5, characterized in that: The second locking member (58) can only move up and down in the vertical direction in the ISOFIX connection assembly (2); a groove (582) is provided on the second locking member (58); a limiting column (541) is provided on the movable member (54); and the limiting column (541) can move along the groove (582).

7. The connector according to claim 6, characterized in that: The groove (582) is V-shaped or triangular.

8. The connector according to claim 1, characterized in that: The ISOFIX connection component (2) is also provided with a connection component fixing device, comprising a front fixing block (21) and a rear fixing block (22), which are respectively sleeved on the two ends of the ISOFIX connection component (2).

9. The connector according to claim 1, characterized in that: A flexible traction component fixing device (11) is provided at the end of the housing (1) away from the connection joint (4), and the flexible traction component (3) passes through the flexible traction component fixing device (11) and is fixed thereby.

10. The connector according to claim 1, characterized in that The ISOFIX connection component (2) further comprises an unlocking spring (53), one end of the unlocking spring (53) is connected to the hook (51), and the other end is connected to the movable part (54), and the flexible traction component (3) is a steel wire.

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