A rear four-seat forward folding structure

Abstract

This utility model relates to the field of automotive seat technology, specifically to a rear four-seat forward folding structure; it includes a seat cushion frame, a backrest frame, and an unlocking mechanism. The unlocking mechanism includes an operating switch, a pull cable, a lower support plate, an upper support plate, a locking block, a toggle block, a connecting piece, a connecting shaft, a connecting seat, a mating plate, a tension spring, a protective device, and an anti-loosening device. The corresponding components in the unlocking mechanism that enables folding in this application do not require high-cost processing technologies such as precision stamping dies and laser welding, but can be manufactured directly using common processing methods and materials, which can reduce production costs to a certain extent. Moreover, the structure is more streamlined than the angle adjuster transmission structure, which will also reduce usage costs to a certain extent, thereby reducing both production and usage costs when the seat is folded forward.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a rear four-seat forward folding structure. Background Technology

[0002] Car seats are important vehicle accessories. Car seats can be classified by shape as separate seats and long seats; by function as fixed seats, detachable seats, and adjustable seats; and by the number of passengers as single seats, double seats, and multi-person seats.

[0003] Currently, the rear seats of microcars and light commercial vehicles often need to be unlocked and folded down during use. Folding the seats increases space utilization, making it easier to place goods or for passengers to enter and exit. Existing seat back flipping mechanisms mostly use angle adjusters, which are installed on both sides of the backrest frame, connecting the backrest frame to the seat cushion frame. The two angle adjusters are connected by an angle adjuster connecting rod, which has an angle adjuster motor that drives its rotation.

[0004] Although the angle adjuster is small, it has high processing requirements. The key gears need to be manufactured using precision stamping dies and undergo heat treatment to improve strength. The final product needs to be assembled and laser welded. Therefore, this type of structure significantly increases production and usage costs when used for seat folding. Utility Model Content

[0005] The purpose of this invention is to provide a rear four-seat forward folding structure, which aims to reduce production and usage costs when the seats are folded forward.

[0006] To achieve the above objectives, this utility model provides a rear four-seat forward folding structure, including a seat cushion frame and a backrest frame, wherein the backrest frame is rotatably mounted on the rear side of the seat cushion frame, and also includes an unlocking mechanism.

[0007] The unlocking mechanism includes an operating switch, a pull cable, a lower support plate, an upper support plate, a locking block, a toggle block, a connecting piece, a connecting shaft, a connecting seat, a mating plate, a tension spring, a protective device, and an anti-loosening device. The operating switch is located on one side of the backrest frame. The pull cable is connected to both the operating switch and the connecting seat. The lower support plate is detachably connected to the seat cushion frame and is located on one side of the seat cushion frame. The upper support plate is rotatably connected to the lower support plate and detachably connected to the backrest frame. The locking block is located above the lower support plate and rotatably connected to the upper support plate, and its toothed portion is engaged with... The toothed portion on the lower support plate engages for locking. The actuating block is detachably connected to the connecting shaft and slidably connected to the locking block. The connecting piece is mounted on one side of the upper support plate via the connecting shaft. The connecting seat is connected to the end of the pull cable away from the operating switch and fixed on the connecting piece. The mating plate is detachably connected to the connecting shaft and rotatably connected to the lower support plate. The two ends of the tension spring are respectively hung on the locking block and the mating plate. The protective device is located on the outside of the pull cable, and the anti-loosening device is located on the rear top of the backrest frame.

[0008] The protective device includes a sheath and an auxiliary component. The sheath is fitted and installed on the outside of the cable. The auxiliary component is located on the upper support plate near the sheath.

[0009] The auxiliary component includes an ear plate and a sleeve seat. The ear plate is fixed to the upper support plate, and the sleeve seat is snapped onto the ear plate and fitted onto the outside of the cable.

[0010] The anti-loosening device includes a positioning box assembly and a hanging strap. The positioning box assembly is disposed on the top rear side of the backrest frame, and the hanging strap is disposed on the positioning box assembly.

[0011] The backrest frame is also equipped with reinforcing rods.

[0012] This utility model discloses a rear four-seat forward-folding structure. When the seat folds forward, the operation switch controls the pull cable. The pull cable and the connecting seat work together to drive the connecting piece. After the connecting piece moves, it drives the connecting shaft to rotate. The rotating connecting shaft drives the actuating block to move. After the actuating block moves, the locking block moves. When the locking block moves, its toothed part can disengage from the toothed part on the lower support plate. Then, the upper support plate and the mating plate can be rotated directly, thereby realizing the forward folding of the backrest. The corresponding components in the unlocking mechanism that realizes the folding in this application do not need to use high-cost processing technologies such as precision stamping dies and laser welding. Instead, they can be manufactured directly using common processing methods and materials, which can reduce production costs to a certain extent. Moreover, the structure is more streamlined than the angle adjuster transmission structure, which can also reduce the usage costs. In this way, the production and usage costs can be reduced when the seat folds forward. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the rear four-part seat forward folding structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the lower support plate of this utility model.

[0016] Figure 3 This is a schematic diagram of the upper support plate of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the locking block of this utility model.

[0018] Figure 5 This is a schematic diagram of the connecting seat of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the toggle block of this utility model.

[0020] In the diagram: 101-Seat cushion frame, 102-Backrest frame, 103-Operating switch, 104-Pull cable, 105-Lower support plate, 106-Upper support plate, 107-Locking block, 108-Toggle block, 109-Connecting piece, 110-Connecting shaft, 111-Connecting seat, 112-Matching plate, 113-Tension spring, 114-Sheath, 115-Ear plate, 116-Sleeve seat, 117-Positioning box assembly, 118-Hanging strap, 119-Reinforcing rod. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] like Figures 1 to 6 As shown, where Figure 1 This is a schematic diagram of the overall structure of the rear four-seat folding-forward configuration. Figure 2 This is a structural schematic diagram of the lower support plate 105. Figure 3 This is a structural schematic diagram of the upper support plate 106. Figure 4 This is a structural schematic diagram of lock block 107. Figure 5 This is a structural schematic diagram of connector 111. Figure 6This is a schematic diagram of the structure of the actuating block 108. This utility model provides a rear four-seat forward-folding structure: including a seat cushion frame 101, a backrest frame 102, and an unlocking mechanism. The unlocking mechanism includes an operating switch 103, a pull cable 104, a lower support plate 105, an upper support plate 106, a locking block 107, an actuating block 108, a connecting piece 109, a connecting shaft 110, a connecting seat 111, a mating plate 112, a tension spring 113, a protective device, and an anti-loosening device. The protective device includes a protective sleeve 114 and auxiliary components. The auxiliary components include an ear plate 115 and a sleeve seat 116. The anti-loosening device includes a positioning box assembly 117 and a hanging strap 118. The aforementioned solution can reduce production and usage costs when the seat is folded forward. It is understood that the aforementioned solution facilitates low-cost processing and use.

[0023] In this embodiment, the backrest frame 102 is rotatably mounted on the rear side of the seat cushion frame 101, and the backrest frame 102 can be flipped over by operating the unlocking mechanism.

[0024] The operating switch 103 is located on one side of the backrest frame 102. The pull cable 104 is connected to the operating switch 103 and the connecting seat 111. The lower support plate 105 is detachably connected to the seat cushion frame 101 and is located on one side of the seat cushion frame 101. The upper support plate 106 is rotatably connected to the lower support plate 105 and detachably connected to the backrest frame 102. The locking block 107 is located above the lower support plate 105 and rotatably connected to the upper support plate 106, and its toothed portion engages with the toothed portion of the lower support plate 105 for locking. The actuating block 108 is connected to the connecting shaft 110. The backrest frame 102 is detachably connected and slidably connected to the locking block 107. The connecting piece 109 is mounted on one side of the upper support plate 106 via the connecting shaft 110. The connecting seat 111 is connected to the end of the cable 104 away from the operating switch 103 and fixed on the connecting piece 109. The mating plate 112 is detachably connected to the connecting shaft 110 and rotatably connected to the lower support plate 105. The two ends of the tension spring 113 are respectively hung on the locking block 107 and the mating plate 112. The protective device is located on the outside of the cable 104. The anti-loosening device is located on the top rear side of the backrest frame 102. The bottom of the lower support plate 105 is connected to the seat cushion frame 101 via a screw and nut. The top of the upper support plate 106 is provided with a toothed portion. The bottom of the upper support plate 106 is connected to the lower support plate 105 via a T-shaped pin. At the same time, the bottom of the mating plate 112 is also fixed via a T-shaped pin that rotatably engages with the upper support plate 106 and the lower support plate 105. The end of the pin is provided with a slot and a retaining spring is installed for limiting the position. The upper side of the upper support plate 106 is connected to the seat cushion frame 101 via a screw and nut. The connecting shaft 110 is T-shaped, with a stepped optical axis on the side away from the limiting plate. There is a flat portion between the limiting plate and the stepped optical axis. The flat portion facilitates engagement with the mating grooves on the connecting piece 109 and the actuating block 108. This structure can prevent the connecting piece 109 and the actuating block 108 from rotating. The locking block 107 is mounted on the upper support plate 106 via a T-shaped pin, and its toothed portion can engage with the toothed portion on the lower support plate 105. A connecting seat 111 is installed in the hole at the end of the connecting piece 109 away from the connecting shaft 110. The connecting seat 111 has an anti-detachment support arm. The connecting seat 111 is connected to the cable 104, and the side of the cable 104 away from the connecting seat 111 is connected to the operating switch 103. The operating switch 103 is used to realize the extension and retraction of the cable 104. The two ends of the tension spring 113 are respectively hooked onto the hooking part of the locking block 107 and into the hooking hole of the mating plate 112. The protective device can be used to protect the cable 104, and the anti-loosening device facilitates the fixing of the backrest frame 102 after folding. All T-shaped pins in this application are protected against detachment by retaining springs.

[0025] Secondly, the sheath 114 is fitted onto the outside of the cable 104; the auxiliary component is disposed on the upper support plate 106 near the sheath 114. The sheath 114 can be fitted over the outside of the cable 104 during installation, and the auxiliary component assists in the installation of the sheath 114.

[0026] Then, the ear plate 115 is fixed to the upper support plate 106; the sleeve seat 116 is snapped onto the ear plate 115 and fitted onto the outside of the cable 104. The ear plate 115 can be fixed by bolts or by direct welding, and the sleeve seat 116 is snapped into the U-shaped groove on the ear plate 115.

[0027] Furthermore, the positioning box assembly 117 is disposed on the top rear side of the backrest frame 102; the hanging strap 118 is disposed on the positioning box assembly 117. The positioning box assembly 117 and the hanging strap 118 cooperate to facilitate the binding and limiting of the backrest after it is flipped over.

[0028] Finally, a reinforcing rod 119 is also provided on the backrest frame 102. The reinforcing rod 119 helps to enhance the stability of the backrest frame 102, and the number of them can be set multiple times depending on the situation.

[0029] When using this utility model to achieve forward folding of the seat, production and usage costs can be reduced. When the seat folds forward, the operating switch 103 controls the retraction of the cable 104. The cable 104, in conjunction with the connecting seat 111, drives the connecting piece 109 to move. Since the connecting piece 109, after being installed and engaged with the connecting shaft 110, cannot rotate on its own, the retraction of the cable 104 will drive the connecting shaft 110 to rotate. The rotation of the connecting shaft 110 will then drive the actuating block 108 to move. After the actuating block 108 moves, its actuating part moves towards the groove side of the locking block 107, and can push the locking block 107 away from the groove. The lower support plate 105 is rotated, so that when the locking block 107 is activated, its toothed portion can disengage from the toothed portion on the lower support plate 105. Then, the upper support plate 106 and the mating plate 112 can be rotated directly, thereby realizing the forward folding of the backrest. The corresponding components in the unlocking mechanism that realizes the folding in this application do not need to use high-cost processing technologies such as precision stamping dies and laser welding, but can be manufactured directly using common processing methods and materials, which can reduce production costs to a certain extent. Moreover, the structure is more streamlined than the angle adjuster transmission structure, which can also reduce the usage costs to a certain extent. In this way, the production and usage costs can be reduced when the seat is folded forward.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A rear four-way split seat forward folding structure, comprising a seat cushion frame and a backrest frame, wherein the backrest frame is rotatably mounted on the rear side of the seat cushion frame, characterized in that: It also includes unlocking mechanisms; The unlocking mechanism includes an operating switch, a pull cable, a lower support plate, an upper support plate, a locking block, a toggle block, a connecting piece, a connecting shaft, a connecting seat, a mating plate, a tension spring, a protective device, and an anti-loosening device. The operating switch is located on one side of the backrest frame. The pull cable is connected to both the operating switch and the connecting seat. The lower support plate is detachably connected to the seat cushion frame and is located on one side of the seat cushion frame. The upper support plate is rotatably connected to the lower support plate and detachably connected to the backrest frame. The locking block is located above the lower support plate and rotatably connected to the upper support plate, and its toothed portion is engaged with... The toothed portion on the lower support plate engages for locking. The actuating block is detachably connected to the connecting shaft and slidably connected to the locking block. The connecting piece is mounted on one side of the upper support plate via the connecting shaft. The connecting seat is connected to the end of the pull cable away from the operating switch and fixed on the connecting piece. The mating plate is detachably connected to the connecting shaft and rotatably connected to the lower support plate. The two ends of the tension spring are respectively hung on the locking block and the mating plate. The protective device is located on the outside of the pull cable, and the anti-loosening device is located on the rear top of the backrest frame.

2. The rear four-seat forward folding structure as described in claim 1, characterized in that: The protective device includes a sheath and an auxiliary component. The sheath is fitted and installed on the outside of the cable. The auxiliary component is located on the upper support plate near the sheath.

3. The rear four-seat forward folding structure as described in claim 2, characterized in that: The auxiliary component includes an ear plate and a sleeve seat. The ear plate is fixed to the upper support plate; the sleeve seat is snapped onto the ear plate and fitted onto the outside of the cable.

4. The rear four-quarter seat forward folding structure as described in claim 1, characterized in that: The anti-loosening device includes a positioning box assembly and a hanging strap. The positioning box assembly is disposed on the top rear side of the backrest frame; the hanging strap is disposed on the positioning box assembly.

5. The front folding structure of the fourth-row four-split seats according to claim 1, wherein : The backrest frame is also equipped with reinforcing rods.

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