A swing mechanism for seats that facilitates position locking and unlocking.

Abstract

This invention discloses a swing device for a seat that facilitates locking and unlocking. In the first driving state, its drive assembly can elastically drive a blocking member to move in a first direction so that it can extend into a limiting hole and lock the movable seat in position. When the blocking member is not aligned with the limiting hole and the user pulls the cable to switch from the second driving state to the first driving state, during the locking movement driven by the drive assembly, the blocking member is obstructed by one side wall of the movable seat. This provides elastic buffering between the drive assembly and the blocking member, preventing the user from continuing to pull the cable and thus preventing the drive assembly from switching from the second driving state to the first driving state. This results in a good user experience. The state-holding mechanism eliminates the need for the user to pull the cable to maintain the desired driving state of the drive assembly.

Description

Technical Field

[0001] This invention relates to a swing device for a seat that facilitates position locking and unlocking. Background Technology

[0002] Some existing seats have a tailboard / backrest bracket that swings to the base. The tilt angle of the backrest can be adjusted by adjusting the swing angle of the tailboard / backrest bracket relative to the base. This provides good comfort and helps improve market competitiveness.

[0003] Chinese patent CN217471560U discloses a connection structure between a seat and a backrest. Although it discloses a technical solution that uses a spring assembly to elastically drive an adjustment plate into an adjustment slot for locking, it requires external force to maintain the unlocked state when unlocking. Otherwise, it automatically locks elastically. Thus, when unlocking, external force must be maintained to overcome the reset force of the spring assembly before the backrest position is adjusted. This is not conducive to improving the user experience, and it is necessary to solve this problem. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the above-mentioned technologies and provides a swing device for a seat that facilitates position locking and unlocking.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A swinging device for a seat that facilitates locking and unlocking includes a base 1, on which a movable seat 2 capable of swinging up and down is rotatably connected. A plurality of vertically distributed limiting holes 21 are provided on one side wall of the movable seat 2. The base 1 is equipped with a blocking member 3 that can move linearly back and forth to insert into the limiting holes 21 to lock the movable seat 2 in a certain position and to disengage from the limiting holes 21 to unlock the movable seat 2. The base 1 is provided with a driving assembly 4 that can elastically drive the blocking member 3 in a first driving state to insert into the limiting holes 21 to lock the movable seat 2 in a certain position and in a second driving state to drive the blocking member 3 in a second direction to disengage from the limiting holes 21 to unlock the movable seat 2. The driving assembly 4 is provided with a pull cable 41 that can switch the driving state of the driving assembly 4 with repeated pulling. The base 1 is also provided with a state-holding mechanism that maintains the driving state of the driving assembly 4 after the pull cable 41 is released.

[0007] Preferably, the drive assembly 4 is provided with a transmission torsion spring 42 for swinging back and forth to elastically drive the blocking member 3 to move back and forth in a straight line. When the pull cable 41 is pulled one time after another, the transmission torsion spring 42 in the drive assembly 4 can swing back and forth.

[0008] Preferably, the drive assembly 4 includes a first movable member 431 capable of linear back-and-forth movement to drive the transmission torsion spring 42 to swing back and forth, a spring 44 for elastically driving the first movable member 431 to reset in one direction, and one end of the pull wire 41 is connected to the first movable member 431 for pulling the first movable member 431 to move in another direction.

[0009] Preferably, the movable seat 2 is provided with first vertical walls 20 on the left and right sides respectively, and one of the first vertical walls 20 is provided with several limiting holes 21 distributed vertically and horizontally. The blocking member 3 can move back and forth in a straight line in the left and right direction to facilitate entering and exiting the limiting holes 21.

[0010] Preferably, a limiting structure 5 is provided between the base 1 and the movable seat 2 to prevent the movable seat 2 from swinging excessively up and down relative to the base 1. The left and right sides of the base 1 are respectively provided with second vertical walls 10 corresponding to the first vertical wall 20. The limiting structure 5 includes a crossbar 51 connected between the left and right first vertical walls 20 and swinging up and down together with the movable seat 2, and a travel limiting groove 52 provided on the left and right second vertical walls 10 to limit the travel of the crossbar 51.

[0011] Preferably, the drive assembly 4 includes a second movable member 432 capable of linear back-and-forth movement to drive the blocking member 3 in linear back-and-forth movement. When the pull cable 41 is pulled repeatedly, the second movable member 432 of the drive assembly 4 can move linearly back and forth. The state holding mechanism includes a guide loop 4321 recessed in the second movable member 432. A movable rod 45 is oscillatingly connected to the base 1. One end of the movable rod 45 is provided with a rod head 451 for movement within the guide loop 4321. The guide loop 4321 is provided with a first groove for the rod head 451 to reside in, thereby maintaining the drive assembly 4 in a first driving state. Position 43211 and second slot 43212 for the rod head 451 to reside so as to keep the drive assembly 4 in a second drive state. The guide circuit 4321 includes a first guide segment 43213 for guiding the rod head 451 from the first slot 43211 to the second slot 43212 and a second guide segment 43214 for guiding the rod head 451 from the second slot 43212 to the first slot 43211. Pulling the pull cable 41 repeatedly can cause the movable rod 45 to move relative to the second movable member 432 so as to allow the rod head 451 to move in the guide circuit 4321.

[0012] Preferably, the guide circuit 4321 adopts a heart-shaped circuit.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The structure of this design is simple and easy to implement. In the first driving state, the driving component can elastically drive the blocking member to move in the first direction so as to extend into the limiting hole and lock the movable seat in position. When the blocking member is not aligned with the limiting hole and the user pulls the pull cable to switch from the second driving state to the first driving state, during the locking movement driven by the driving component, when the blocking member is obstructed by one side wall of the movable seat, the driving component and the blocking member provide elastic buffering so as not to hinder the user from continuing to pull the pull cable, so as not to hinder the driving component from switching from the second driving state to the first driving state. The user operation experience is good. Subsequently, when the blocking member is aligned with the limiting hole, the driving component continues to elastically drive the blocking member to move in the first direction so as to extend into the limiting hole and lock the movable seat in position, which is practical. The state holding mechanism is designed to maintain the driving state of the driving component after switching the driving state by the pull cable. In this way, the user does not need to pull the pull cable to maintain the desired driving state of the driving component, which improves the operation experience.

[0015] 2. The arrangement of the first movable part, spring, and pull cable of the drive assembly described in this case facilitates the linear back-and-forth movement of the first movable part when the pull cable is pulled repeatedly, thereby causing the transmission torsion spring in the drive assembly to swing back and forth, thus driving the blocking part to move linearly back and forth. It is easy to implement. Combined with the arrangement of the state holding mechanism, it is easy to switch the drive state of the drive assembly by pulling the pull cable repeatedly. It is convenient to operate and helps to improve the user experience.

[0016] 3. The first and second slots of the guide circuit of the second movable component in this case are designed to allow the rod head of the movable rod to remain in place when the pull wire is released, so as to maintain the driving state of the drive assembly. The first and second guide sections are designed to allow the rod head to move between the first and second slots when the pull wire is pulled, and then the rod head remains in the corresponding slot when it is released after being pulled to the position. This design is convenient to implement. Attached Figure Description

[0017] Figure 1 This is one of the structural diagrams in this case.

[0018] Figure 2 This is the second structural diagram of this case.

[0019] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4This is the third structural diagram in this case. Detailed Implementation

[0021] The following examples further illustrate the features and other related characteristics of the present invention in detail, to facilitate understanding by those skilled in the art:

[0022] like Figures 1 to 4 As shown, a swinging device for a seat that facilitates locking and unlocking includes a base 1, on which a movable seat 2 capable of swinging up and down is rotatably connected. A plurality of vertically distributed limiting holes 21 are provided on one side wall of the movable seat 2. The base 1 is equipped with a blocking member 3 that can move linearly back and forth to insert into the limiting holes 21 to lock the movable seat 2 in a certain position and to disengage from the limiting holes 21 to unlock the movable seat 2. The base 1 is provided with a driving assembly 4 that can elastically drive the blocking member 3 in a first driving state to insert into the limiting holes 21 to lock the movable seat 2 in a certain position and in a second driving state to drive the blocking member 3 in a second direction to disengage from the limiting holes 21 to unlock the movable seat 2. The driving assembly 4 is provided with a pull cable 41 that can switch the driving state of the driving assembly 4 with repeated pulling. The base 1 is also provided with a state-holding mechanism that maintains the driving state of the driving assembly 4 after the pull cable 41 is released.

[0023] As described above, the structure of this invention is simple and easy to implement. In the first driving state, the driving component 4 can elastically drive the blocking member 3 to move in the first direction so as to extend into the limiting hole 21 and lock the movable seat 2 in position. When the blocking member 3 is not aligned with the limiting hole 21 and the user pulls the pull cable 41 to switch from the second driving state to the first driving state, during the locking movement of the blocking member 3 driven by the driving component 4, when the blocking member 3 is obstructed by one side wall of the movable seat 2, the driving component 4 and the blocking member 3 provide elastic buffering so as not to hinder the user from continuing to pull. The pull cord 41 is designed to facilitate the switching of the drive component 4 from the second drive state to the first drive state without obstructing it, resulting in a better user experience. Subsequently, when the blocking member 3 aligns with the limiting hole 21, the drive component 4 continues to elastically drive the blocking member 3 to move in the first direction so as to extend into the limiting hole 21 and lock the movable seat 2 in position, which is practical. The state holding mechanism is designed to maintain the drive state of the drive component 4 after switching the drive state via the pull cord 41. In this way, the user does not need to pull the pull cord 41 to maintain the desired drive state of the drive component 4, resulting in a better user experience.

[0024] In addition, as mentioned above, in specific implementation, the pull wire 41 described in this case can adopt a structure with a conduit to protect and limit the pull wire 41, and facilitate the subsequent pulling of the wire core relative to the conduit.

[0025] like Figure 3 As shown, in a specific implementation, the drive assembly 4 is provided with a transmission torsion spring 42 for swinging back and forth to elastically drive the blocking member 3 to move back and forth in a straight line. In order to facilitate the specific implementation, the transmission torsion spring 42 in the drive assembly 4 can swing back and forth when the pull wire 41 is pulled one after another.

[0026] like Figure 3 As shown, in a specific implementation, the drive assembly 4 includes a first movable member 431 capable of linear back-and-forth movement to drive the transmission torsion spring 42 to swing back and forth, a spring 44 for elastically driving the first movable member 431 to reset in one direction, and one end of the pull wire 41 is connected to the first movable member 431 to pull the first movable member 431 to move in another direction.

[0027] As described above, the arrangement of the first movable part 431, spring 44, and pull cable 41 in the drive assembly 4 facilitates the linear back-and-forth movement of the first movable part 431 when the pull cable 41 is pulled repeatedly, thereby causing the transmission torsion spring 42 in the drive assembly 4 to swing back and forth, thus driving the blocking part 3 to move linearly back and forth. This is convenient to implement. Combined with the state holding mechanism, it facilitates the switching of the drive assembly 4's drive state by pulling the pull cable 41 repeatedly, making the operation convenient and improving the user experience.

[0028] like Figure 1 As shown, in specific implementation, the movable seat 2 is provided with first vertical wall 20 on the left and right sides respectively. One of the first vertical wall 20 is provided with several limiting holes 21 distributed vertically and horizontally. The blocking member 3 can move back and forth in a straight line in the left and right directions to enter and exit the limiting hole 21.

[0029] like Figure 2 As shown, in a specific implementation, a limiting structure 5 is provided between the base 1 and the movable seat 2 to prevent the movable seat 2 from swinging excessively up and down relative to the base 1. The left and right sides of the base 1 are respectively provided with second vertical walls 10 corresponding to the first vertical wall 20. The limiting structure 5 includes a crossbar 51 connected between the left and right first vertical walls 20 and swinging up and down together with the movable seat 2, and a travel limiting groove 52 provided on the left and right second vertical walls 10 to limit the travel of the crossbar 51, which facilitates the specific implementation.

[0030] like Figure 3 , Figure 4As shown, in a specific implementation, the driving assembly 4 includes a second movable member 432 capable of linear back-and-forth movement to drive the blocking member 3 to linear back-and-forth movement. When the pull cable 41 is pulled repeatedly, the second movable member 432 of the driving assembly 4 can move linearly back and forth. The state-holding mechanism includes a guide loop 4321 recessed in the second movable member 432. A movable rod 45 is oscillatingly connected to the base 1. One end of the movable rod 45 is provided with a rod head 451 for movement within the guide loop 4321. The guide loop 4321 is provided for the rod head 451 to remain in place so that the driving assembly 4 is held in a first driving state. The first slot 43211 and the second slot 43212 for the rod head 451 to reside in so as to keep the drive assembly 4 in the second drive state. The guide circuit 4321 includes a first guide section 43213 for guiding the rod head 451 from the first slot 43211 to the second slot 43212 and a second guide section 43214 for guiding the rod head 451 from the second slot 43212 to the first slot 43211. Pulling the pull cable 41 repeatedly can cause the movable rod 45 to move relative to the second movable member 432 so as to allow the rod head 451 to move in the guide circuit 4321.

[0031] As described above, the first slot 43211 and the second slot 43212 of the guide circuit 4321 of the second movable member 432 in this case are provided so that the rod head 451 of the movable rod 45 can be stationed when the pull cable 41 is released, so as to maintain the driving state of the drive assembly 4. The first guide section 43213 and the second guide section 43214 are provided so that when the pull cable 41 is pulled, the rod head 451 can be guided to move between the first slot 43211 and the second slot 43212. Then, when the rod head 451 is released after being pulled to the position, it is stationed in the corresponding slot. This is convenient to implement.

[0032] As described above, in specific implementations, the first movable element 431 and the second movable element 432 in the drive component 4 can be the same movable element or different movable elements.

[0033] As described above, in specific implementation, the guide loop 4321 adopts a heart-shaped loop, which is convenient to implement and facilitates the setting of the first slot 43211, the second slot 43212, the first guide segment 43213, and the second guide segment 43214.

[0034] As stated above, this case protects a swing device for a seat that facilitates position locking and unlocking, and all technical solutions that are the same as or similar to this case should be considered to fall within the protection scope of this case.

Claims

1. A swing device for a seat that facilitates position locking and unlocking, characterized in that... The base (1) includes a base on which a movable seat (2) capable of swinging up and down is rotatably connected. The movable seat (2) has several vertically distributed limiting holes (21) on one side wall. The base (1) is equipped with a blocking member (3) that can move back and forth linearly to insert into the limiting holes (21) to lock the movable seat (2) in one position and to disengage from the limiting holes (21) to unlock the movable seat (2). The base (1) is also equipped with a blocking member (3) that can elastically drive the blocking member (3) to move in a first direction during a first driving state. A drive assembly (4) is provided for locking the movable seat (2) in the position so as to extend into the limiting hole (21) and for driving the blocking member (3) to move in the second direction in the second driving state so as to disengage from the limiting hole (21) and unlock the movable seat (2). The drive assembly (4) is provided with a pull cable (41) for switching the drive state of the drive assembly (4) when pulled repeatedly. The base (1) is also provided with a state holding mechanism for maintaining the drive state of the drive assembly (4) after the pull cable (41) is released. The drive assembly (4) is provided with a transmission torsion spring (42) for swinging back and forth so as to elastically drive the blocking member (3) to move back and forth in a straight line. When the pull wire (41) is pulled one by one, the transmission torsion spring (42) in the drive assembly (4) can swing back and forth. The movable seat (2) is provided with first vertical wall bodies (20) on the left and right sides respectively. One of the first vertical wall bodies (20) is provided with several limiting holes (21) distributed vertically and horizontally. The blocking member (3) can move back and forth in a straight line in the left and right directions to facilitate entering and exiting the limiting holes (21). The drive assembly (4) includes a second movable member (432) capable of linear back-and-forth movement to drive the blocking member (3) to linear back-and-forth movement. When the pull cable (41) is pulled once, the second movable member (432) of the drive assembly (4) can move linearly back and forth. The state holding mechanism includes a guide loop (4321) recessed in the second movable member (432). A movable rod (45) is sway-connected to the base (1). One end of the movable rod (45) is provided with a rod head (451) for moving in the guide loop (4321). The guide loop (4321) is provided with a first slot (451) for the rod head (451) to reside so that the drive assembly (4) is held in the first driving state. 3211) and a second slot (43212) for the rod head (451) to reside so as to keep the drive assembly (4) in a second drive state. The guide circuit (4321) includes a first guide segment (43213) for guiding the rod head (451) from the first slot (43211) to the second slot (43212) and a second guide segment (43214) for guiding the rod head (451) from the second slot (43212) to the first slot (43211). Pulling the pull cable (41) repeatedly enables the movable rod (45) to move relative to the second movable member (432) so as to allow the rod head (451) to move in the guide circuit (4321).

2. The swing device for a seat that facilitates position locking and unlocking according to claim 1, characterized in that... The drive assembly (4) includes a first movable member (431) capable of linear back-and-forth movement to drive the transmission torsion spring (42) to swing back and forth, a spring (44) for elastically driving the first movable member (431) to reset in one direction, and one end of the pull wire (41) connected to the first movable member (431) for pulling the first movable member (431) to move in another direction.

3. A swing device for a seat that facilitates position locking and unlocking according to claim 1, characterized in that... A limiting structure (5) is provided between the base (1) and the movable seat (2) to prevent the movable seat (2) from swinging excessively up and down relative to the base (1). The left and right sides of the base (1) are respectively provided with second vertical walls (10) corresponding to the first vertical wall (20). The limiting structure (5) includes a crossbar (51) connected between the first vertical walls (20) on the left and right sides and swinging up and down with the movable seat (2), and a travel limiting groove (52) provided on the second vertical walls (10) on the left and right sides to limit the travel of the crossbar (51) swinging up and down.

4. A swing device for a seat that facilitates position locking and unlocking according to claim 1, characterized in that... The guide loop (4321) adopts a heart-shaped loop.

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