Seat back linkage unlocking device and vehicle

Abstract

The present invention discloses a seat back linkage unlocking device and a car. The seat back linkage unlocking device comprises an unlocking trigger part linked with the seat back, an operating part for controlling unlocking, and an unlocking part for unlocking the seat. When the seat back is folded, the unlocking trigger part is driven to move, so that the operation of the operating part can drive the unlocking part to perform an unlocking action. In this scheme, when the seat back is not folded, there is no linkage relationship between the unlocking part and the operating part. Even if the operator operates the operating part, the operation will not be transmitted to the unlocking part, and the unlocking part will not actually perform the unlocking action, thereby ensuring that the operating part can control the unlocking part to perform the unlocking action only after the seat back is folded flat, thereby preventing passengers from operating incorrectly and ensuring passenger safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a seat back linkage unlocking device and a vehicle. Background Art

[0002] With the improvement of people's material living standards, cars have become the main means of transportation for families in my country. The volume of a car trunk is limited. When users need to use a large trunk space to meet different functional needs, they need to fold down some seats in the car, such as folding down the back seats, and connect them with the trunk space to increase the trunk space.

[0003] Generally, the seat frame of a foldable seat is locked to the vehicle body by a foot lock. When the seat needs to be folded down, the foot lock is unlocked by an unlocking component, and then the seat is folded and sunk into the vehicle floor, thereby increasing the luggage compartment space. However, if there are still passengers on the seat, once the unlocking component is operated by mistake, the seat is no longer fixed to the vehicle body, which may affect the personal safety of the passengers. Summary of the invention

[0004] The present invention provides a seat back linkage unlocking device, comprising an unlocking trigger part linked with the backrest, an operating part for controlling the unlocking, and an unlocking part for unlocking the seat, wherein the unlocking trigger part is driven to move when the backrest is folded, so that the operation of the operating part can drive the unlocking part to perform an unlocking action.

[0005] Optionally, when the backrest is folded, the unlocking trigger part is driven to connect to the operating part, the operating part drives the unlocking trigger part to move, and the unlocking trigger part then drives the unlocking part to perform an unlocking action.

[0006] Optionally, the seat back linkage unlocking device includes a base, and the unlocking triggering part is hinged to the base, and when the seat back is folded, the unlocking triggering part is driven to rotate to connect with the operating part.

[0007] Optionally, the unlocking triggering part includes a rotating part and an unlocking pin, the rotating part is hinged to the base, the rotating part is provided with a long slot, the unlocking pin is installed in the long slot and can only move along the length direction of the long slot;

[0008] The rotating part rotates with the folding of the backrest, driving the unlocking pin to be inserted into the operating part to be connected with the operating part. When the operating part is operated, the unlocking pin is driven to move along the long groove, and the unlocking pin drives the unlocking part to perform an unlocking action during the movement.

[0009] Optionally, the operating portion is provided with a groove with an opening at one end, and when the rotating portion rotates, the unlocking pin is driven to slide from the opening into the groove to enter the operating portion.

[0010] Optionally, the operating portion is provided with a smooth guide wall to guide the unlocking pin to slide into the groove.

[0011] Optionally, the unlocking portion is hinged to the base, and when the unlocking pin moves along the long slot, it presses the unlocking portion, and the unlocking portion rotates to perform an unlocking operation.

[0012] Optionally, the unlocking portion, the operating portion, and the unlocking triggering portion are all provided with a resetting portion.

[0013] Optionally, the unlocking trigger portion is provided with a first pull wire, and / or the unlocking portion is provided with a second pull wire, the second pull wire is used to unlock the seat, and the first pull wire is used to link the backrest.

[0014] The present invention also provides a car, comprising a seat, which is locked to the car body by a locking member, and also comprises a seat back linkage unlocking device as described in any of the above items, wherein the unlocking part is used to unlock the locking member, and the unlocking trigger part is linked to the seat back.

[0015] In the present solution, the seat back linkage unlocking device can drive the unlocking trigger part to move only when the backrest is folded, so as to transmit the action of the operating part to the unlocking part, or drive the operating part to a position where the unlocking part can be linked, that is, the unlocking trigger part can establish a linkage between the operating part and the unlocking part when the backrest is folded. In other words, when the backrest is not folded, there is no linkage relationship between the unlocking part and the operating part. Even if the operator operates the operating part, the operation will not be transmitted to the unlocking part, and the unlocking part will not actually perform the unlocking action, so as to ensure that the operating part can only operate the unlocking part to unlock after the backrest is folded flat, thereby preventing passengers from operating incorrectly and ensuring passenger safety.

[0016] The automobile provided by this solution includes the above-mentioned seat back linkage unlocking device, so it has the same technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a seat back linkage unlocking device provided in an embodiment of the present invention installed on a seat back sheet metal;

[0018] Figure 2 for Figure 1 Schematic diagram of the middle seat back linkage unlocking device;

[0019] Figure 3 for Figure 2 Rear view of

[0020] Figure 4 for Figure 3 Isometric drawing of

[0021] Figure 5 for Figure 3 Schematic diagram of the connection between the unlocking pin and the operating lever;

[0022] Figure 6 for Figure 3 Schematic diagram of the middle unlocking pin driving the unlocking rod to unlock.

[0023] Figure 1-6 The reference numerals in the figures are described as follows:

[0024] 100 - base;

[0025] 101-first linkage rod; 102-second linkage rod; 102a-long slot; 103-unlocking pin; 104-clamping ring; 105-first hinge shaft;

[0026] 20-operating handle; 20a-groove; 201-second hinge axis;

[0027] 30-unlocking lever;

[0028] 40- second pull line;

[0029] 50-first pull line;

[0030] 60-pull strap;

[0031] 70-first return torsion spring;

[0032] 80-second reset torsion spring;

[0033] 200-Backrest sheet metal. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Please refer to Figure 1 , Figure 1 A schematic diagram of a seat back linkage unlocking device provided in an embodiment of the present invention installed on a seat back sheet metal 200; Figure 2 for Figure 1 Schematic diagram of the middle seat back linkage unlocking device; Figure 3 for Figure 2 Rear view of Figure 4 for Figure 3 Isometric drawing of .

[0036] The seat back linkage unlocking device in this embodiment includes an unlocking part for unlocking the seat, an operating part for controlling the unlocking, and an unlocking triggering part that is linked with the backrest and is used to trigger the unlocking. The seat frame support leg is generally locked to the vehicle body by a locking member, and the unlocking part can unlock the locking member, such as Figure 3 ,4 As shown, the unlocking part includes an unlocking rod 30 and a second pull wire 40. When the unlocking rod 30 performs a corresponding unlocking action, it can drive the second pull wire 40 to move. The second pull wire 40 can be pulled to unlock the seat. For example, the second pull wire 40 can pull the locking piece of the seat frame bracket to unlock it.

[0037] The operating part is for the operator to perform unlocking operations, while the unlocking trigger part is a component that allows the operation of the operating part to be transmitted to the unlocking part only under predetermined conditions. When the predetermined conditions are met, the unlocking trigger part can be an intermediate component that transmits the action of the operating part to the unlocking part, or it can drive the operating part to a working position engaged with the unlocking part.

[0038] like Figure 1 As shown, the predetermined condition is specifically that the unlocking trigger part can be driven to connect to the operating part only when the backrest is folded, so as to transmit the action of the operating part to the unlocking part. In other words, when the backrest is not folded, there is no connection relationship between the unlocking trigger part and the operating part, and the two cannot be linked. Even if the operator operates the operating part, the operation will not be transmitted to the unlocking part, and the unlocking part will not actually perform the unlocking action. That is, an unlocking trigger part is set between the transmission path of the operating part and the unlocking part to ensure that the operating part can control the unlocking part to perform the unlocking action only after the backrest is folded flat, thereby preventing passengers from operating incorrectly and ensuring passenger safety.

[0039] Specifically, Figure 3 As shown, the seat back linkage unlocking device includes a base 100, which is a cover in this embodiment, serving as a mounting component for the operating part, the unlocking part, and the unlocking trigger part, and can also serve as a protective shell. The unlocking trigger part is hinged to the base 100, Figure 3 The triggering action of the unlocking triggering part is rotation, and its rotating part includes a first linkage rod 101 and a second linkage rod 102 , and the unlocking triggering part also includes an unlocking pin 103 .

[0040] One end of the two linkage rods is hinged to the base 100 through the first hinge shaft 105, and a first reset torsion spring 70 is provided at the same time. The hinged ends of the first linkage rod 101 and the second linkage rod 102 are relatively fixed. When the first linkage rod 101 rotates around the first hinge shaft 105, the second linkage rod 102 also rotates around the first hinge shaft 105. The other end of the first linkage rod 101 is provided with a first pull wire 50, and the first pull wire 50 is connected to the backrest. When the backrest is folded forward and laid flat, the first pull wire 50 will drive the first linkage rod 101 to rotate, and the second linkage rod 102 will rotate accordingly. The unlocking pin 103 is provided at the other end of the second linkage rod 102, and the unlocking pin 103 can be connected to the operating part when the second linkage rod 102 rotates. Specifically, after the backrest is completely folded and laid flat, the unlocking pin 103 and the operating part establish a reliable connection. When the unlocking trigger part and the operating part establish a connection, the operating part drives the unlocking trigger part to act, and the unlocking trigger part then drives the unlocking part to perform an unlocking action.

[0041] Please continue to refer to Figure 3 , and combined with Figure 5 understand, Figure 5 for Figure 3 Schematic diagram of the unlocking pin 103 and the operating handle 20 establishing a connection.

[0042] like Figure 3 As shown, an unlocking pin 103 is provided at the end of the second linkage rod 102, and the operating part is specifically an operating handle 20. The middle part of the operating handle 20 is hinged to the base 100 through a second hinge shaft 201, and the operating handle 20 is provided with a groove 20a with one end open. When the backrest is not folded and the unlocking trigger part is not triggered, the unlocking pin 103 is away from the groove 20a, and even if the operating handle 20 is driven to rotate, the unlocking pin 103 does not move accordingly. When the unlocking trigger part rotates in conjunction with the folded backrest, the unlocking pin 103 at the end of the second linkage rod 102 will rotate and gradually slide from the opening of the groove 20a into the groove 20a. Figure 5 The figure shows the rotation direction of the first linkage rod 101 and the second linkage rod 102. When the backrest is folded, the first linkage rod 101 is driven to rotate downward clockwise, and the second linkage rod 102 is driven to rotate upward clockwise. The unlocking pin 103 can gradually slide into the groove 20a and enter the bottom of the groove 20a, thereby inserting into the operating handle 20. In this way, when the operating handle 20 rotates, it will drive the unlocking pin 103 to move. Figure 3 , 4 As shown, the operating handle 20 is provided with a drawstring 60, and the operating handle 20 can be driven to rotate by the drawstring 60. Here, the unlocking pin 103 slides into the groove 20a.

[0043] Please continue reading Figure 5 The second linkage rod 102 is provided with a long slot 102a, and the unlocking pin 103 is inserted into the long slot 102a and can only move along the length direction of the long slot 102a. Figure 4 As shown, the clamping ring 104 can be used for axial limiting, and the axial direction is the axial direction of the unlocking pin 103, which is also the depth direction of the long groove 102a. In this way, the unlocking pin 103 can only slide along the length direction of the long groove 102a and will not leave the long groove 102a.

[0044] Please combine again Figure 6 understand, Figure 6 for Figure 3 Schematic diagram of the middle unlocking pin 103 driving the unlocking rod 30 to unlock.

[0045] like Figure 6 As shown, when the unlocking pin 103 slides into the bottom of the groove 20a, the unlocking pin 103 is also in a position where it can be linked with the unlocking rod 30. The peripheral wall of the unlocking pin 103 faces the unlocking rod 30, and can be in contact with or have a certain distance. At this time, the operating part is operated to drive the operating handle 20 to rotate. Figure 6 The left end of the middle operating handle 20 is the operating end, which is driven to rotate upward clockwise, and the right end is the driving end, which is provided with the above-mentioned groove 20a. At this time, the driving end rotates downward clockwise. When rotating, the operating end will press the unlocking pin 103 downward, specifically Figure 6 The upper groove wall of the middle groove 20a presses the unlocking pin 103 downward, and the unlocking pin 103 will move downward along the long groove 102a. Since the unlocking pin 103 is in contact with the unlocking rod 30 or contacts the unlocking rod 30 after moving downward a certain distance, the unlocking pin 103 will press the unlocking rod 30 downward during the downward movement. The unlocking rod 30 is also hinged to the second hinge shaft 201 in this embodiment. When it is subjected to the downward pressure of the unlocking pin 103, it will rotate around the second hinge shaft 201. When the unlocking rod 30 rotates, it drives the second pull wire 40 to move to perform the unlocking action.

[0046] It can be understood that the unlocking rod 30 is not limited to being hinged to the base 100, and being driven by the unlocking pin 103 to rotate and unlock. For example, it can also be unlocked by translation, such as directly pressing the unlocking pin 103 downward to unlock when it moves along the long groove 102a. It depends on the unlocking path setting of the unlocking part, and this scheme does not make specific limitations. Here, the unlocking rod 30 and the operating handle 20 are hinged to the same second hinge shaft 201, and the structure is more compact. In addition, the unlocking rod 30 and the operating handle 20 are hinged to the same hinge shaft, and the two are arranged in a stacked manner. The operating handle 20 is located between the second linkage rod 102 and the unlocking rod 30 in the thickness direction. The unlocking pin 103 passes through the long groove 102a, and the pin body that passes through the long groove 102a needs to further pass through the groove 20a to establish linkage with the unlocking rod 30.

[0047] In the above embodiment, Figure 3As shown, when the unlocking pin 103 does not move along the long groove 102a with the operation of the operating handle 20, it is at one end of the long groove 102a close to the first hinge axis 105, which can be defined as the starting end, and the other end opposite is defined as the end. After sliding into the groove 20a, the unlocking pin 103 needs to have a certain distance from the end to provide a stroke for moving with the operation of the operating handle 20. In order to prevent the unlocking pin 103 from falling into the end of the long groove 102a in advance and being difficult to get into the groove 20a, the operating handle 20 is provided with a guide wall 20b (shown in FIG. 1 ) facing the peripheral wall of the unlocking pin 103. Figure 5 ), the unlocking pin 103 can always slide into the groove 20a under the guidance of the guide wall 20b, and the unlocking pin 103 can also slide into the groove 20a without contacting the guide wall 20b, but after the unlocking pin 103 moves to the end of the long groove 102a, it will contact the guide wall 20b and slide into the groove 20a under the guidance of the guide wall 20b. In order to achieve guidance, the guide wall 20b is a smooth wall surface, which can be an arc wall or a curved wall to guide the unlocking pin 103 to slide smoothly into the groove 20a, such as Figure 3 As shown, the guide wall 20b extends from the bottom of the groove 20a to the outside of the groove 20a.

[0048] It is understandable that the guide wall may not be provided. For example, an elastic component is provided between the unlocking pin 103 and the end of the long slot 102a so that it is located at the starting end. It is just necessary to overcome the elastic force of the elastic component during the movement.

[0049] In the above embodiment, the rotating part, the unlocking rod 30 and the operating handle 20 are all provided with a reset part. After unlocking, the force acting on the operating handle 20 is removed, the operating handle 20 returns to the initial position, the unlocking pin 103 returns to the initial position in the long groove 102a, and the unlocking rod 30 also returns to the initial position not pressed and moved by the unlocking pin 103 under the action of the reset part. When the seat is restored to use and is in the open state, the force of the first linkage rod 101 is eliminated, and under the action of the reset part, the first linkage rod 101 and the second linkage rod 102 also return to the initial position before being linked with the folding of the backrest. The reset part can be a reset torsion spring, such as Figure 4 The first return torsion spring 70 provided on the second linkage rod 102 and the second return torsion spring 80 provided on the unlocking rod 30 are shown. It can be understood that when the rotation moves, the return part is selected as the return torsion spring, and when the translation moves, the return part can be a spring.

[0050] In addition, in the above embodiment, the rotating part of the unlocking trigger part includes the first linkage rod 101 and the second linkage rod 102, which rotate synchronously. Therefore, it can be known that the rotating part can also be an integral component, not limited to two linkage rods. Figure 3 In the figure, the two linkage rods are arranged at an angle, which is convenient for arranging the unlocking pin 103, the operating handle 20 and the unlocking rod 30 relatively compactly, but it is obviously not limited to this.

[0051] It should be noted that the unlocking trigger part is not limited to the above-mentioned setting of the rotating part and the unlocking pin 103. For example, when the backrest is folded, the unlocking trigger part can be pushed to move horizontally, and after the translation, the unlocking pin 103 can be pushed into the groove 102a. The operating part is not limited to the operating handle 20 that performs rotation, and it can also be a translation operation. The above-mentioned unlocking rod 30, operating handle 20, first linkage rod 101, and second linkage rod 102 are all rotating operations, and the unlocking pin 103 is also rotated and slid into the groove 20a of the operating handle 20. The rotation axes are parallel, and they all move in the same or similar planes, so that the spatial layout is more compact.

[0052] In addition, as mentioned above, the unlocking trigger part is not limited to being an intermediate transmission component between the operating part and the unlocking part. For example, the unlocking trigger part can push the operating part to a working position engaged with the unlocking part under the drive of the folding of the backrest, so that the operating part drives the unlocking part to move, which can achieve the purpose of the present invention.

[0053] Figure 3 The working process of the middle seat back linkage unlocking device is as follows:

[0054] When the backrest is folded flat, the first pull wire 50 drives the first linkage rod 101 to rotate clockwise, and the second linkage rod 102 rotates clockwise synchronously, driving the unlocking pin 103 at the end to rotate clockwise and slide into the groove 20a of the operating handle 20;

[0055] The operating handle 20 is driven to rotate counterclockwise by the pull belt 60, and the operating end of the operating handle 20 provided with the groove 20a rotates counterclockwise downward, pulling the unlocking pin 103 to move downward along the long groove 102a. When the unlocking pin 103 moves downward, it presses the unlocking rod 30 downward, driving the unlocking rod 30 to rotate counterclockwise, and driving the second pull wire 40 to perform the unlocking action;

[0056] After unlocking is completed, the unlocking rod 30 is reset under the action of the second reset torsion spring 80, the external force of the operating handle 20 is removed, the operating handle 20 is reset, and the unlocking pin 103 is reset in the long groove 102a. When the seat is unfolded and used again, under the action of the first reset torsion spring 70, the second linkage rod 102 and the first linkage rod 101 are reset, and the unlocking pin 103 is disengaged from the groove 20a of the operating handle 20 again.

[0057] This embodiment also provides a car, including a seat, the seat is locked to the car body by a locking member, and also includes the seat back linkage unlocking device described in any of the above embodiments, wherein the unlocking part is used to unlock the locking member, and the unlocking trigger part is linked to the seat back. Obviously, the car has the same technical effects as the above embodiments, and no further description is given.

[0058] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The seat back linkage unlocking device is characterized by: It includes an unlocking trigger part linked with the backrest, an operating part for controlling unlocking, and an unlocking part for unlocking the seat. When the backrest is folded, the unlocking trigger part is driven to move, so that the operation of the operating part can drive the unlocking part to perform an unlocking action. The operating part is an operating handle; When the backrest is folded, the unlocking trigger part is driven to connect to the operating part, the operating part drives the unlocking trigger part to move, and the unlocking trigger part then drives the unlocking part to perform an unlocking action; The seat back linkage unlocking device comprises a base (100), the unlocking triggering part is hinged to the base, and when the seat back is folded, the unlocking triggering part is driven to rotate to connect with the operating part; The unlocking triggering part comprises a rotating part and an unlocking pin (103), the rotating part is hinged to the base (100), the rotating part is provided with a long slot (102a), the unlocking pin (103) is installed in the long slot (102a), and can only move along the length direction of the long slot (102a); The rotating part rotates along with the folding of the backrest, driving the unlocking pin (103) to be inserted into the operating part to be connected with the operating part. When the operating part is operated, the unlocking pin (103) is driven to move along the long groove (102a). During the movement of the unlocking pin (103), the unlocking part is driven to perform an unlocking action.

2. The seat back linkage unlocking device according to claim 1, characterized in that: The operating portion is provided with a groove (20a) with an opening at one end, and when the rotating portion rotates, the unlocking pin (103) is driven to slide from the opening into the groove (20a) to enter the operating portion.

3. The seat back linkage unlocking device according to claim 2, characterized in that: The operating portion is provided with a smooth guide wall (20b) to guide the unlocking pin (103) to slide into the groove (20a).

4. The seat back linkage unlocking device according to claim 1, characterized in that: The unlocking portion is hinged to the base (100), and when the unlocking pin (103) moves along the long slot (102a), it presses against the unlocking portion, and the unlocking portion rotates to perform an unlocking operation.

5. The seat back linkage unlocking device according to any one of claims 1 to 4, characterized in that: The unlocking part, the operating part and the unlocking triggering part are all provided with a resetting part.

6. The seat back linkage unlocking device according to any one of claims 1 to 4, characterized in that: The unlocking triggering part is provided with a first pull wire (50), and the first pull wire (50) is used for linkage connection with the backrest; and / or the unlocking part is provided with a second pull wire (40), and the second pull wire (40) is used for unlocking the seat.

7. A car, comprising a seat, wherein the seat is locked to the car body by a locking member, wherein: It also includes the seat back linkage unlocking device according to any one of claims 1 to 6, wherein the unlocking portion is used to unlock the locking member, and the unlocking trigger portion is linked to the seat back.

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