A conversion structure of a small table board and a foot board in an automobile interior
The four-bar linkage slider mechanism and locking hook structure enable flexible conversion between the small table and the foot pad, solving the problems of high cost and low space utilization caused by independent design in the existing technology, and providing flexible functional options.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FAURECIA LIUZHOU AUTOMOTIVE SEATING CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-02
AI Technical Summary
In existing car seat designs, tray tables and footrests are usually separate, resulting in high manufacturing costs, low space utilization, and passengers being unable to flexibly switch between them when they have different needs.
The four-bar linkage slider mechanism, consisting of a sliding link, a fixed link, and a displacement link, combined with a locking hook and a dead-point holding device, enables flexible switching between the small table and the foot pad. The function switching is achieved through the sliding and locking structure.
It enables flexible switching between a small table and a footrest, reducing manufacturing costs, saving space, improving space utilization, and allowing passengers to choose the function they need.
Smart Images
Figure CN224311650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, specifically a conversion structure for a small table and footrest inside a car. Background Technology
[0002] Currently, car seat functionality is one of the important components of the seat system. Today's market has higher requirements for the comfort functions inside cars, and in order to improve the overall seat functionality, car brands often design seats with richer functional configurations.
[0003] The current mainstream implementation schemes are:
[0004] 1. The two sets of components exist independently and are assembled independently to achieve their respective functions: the small table and the footrest unfold and store independently, without affecting each other. The disadvantages are: the manufacturing cost of the two structures is doubled, and the space utilization rate is low.
[0005] 2. Only a small table is provided. Considering space and cost, most seats are designed with only a small table and no footrest. The disadvantage is that passengers cannot use the small table when resting, and there is no footrest available.
[0006] 3. It only has a footrest function. A footrest-only function is slightly cheaper than a small table-only function and requires less space. Its disadvantage is that there is no small table available when passengers in the back need to temporarily place items.
[0007] The information disclosed in the above background section is only intended to enhance the understanding of the overall background of this utility model, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Utility Model Content
[0008] To address the aforementioned shortcomings, the present invention aims to provide a convertible structure for a car interior table and footrest, allowing rear passengers to flexibly switch between the two functions according to their actual needs.
[0009] To achieve the above objectives, the present invention adopts the following technical solution:
[0010] A conversion structure for a car interior tray table and footrest includes a tray table, a sliding link, a fixed link, and a displacement link. The tray table has transverse sliding grooves running forward and backward on both its left and right sides. Locking pins are located at the center of both the front and rear ends of the tray table. One end of the sliding link is pivotally connected to the center of the seat back, and the other end is slidably connected to the transverse sliding groove of the tray table. One end of the fixed link is also pivotally connected to the center of the back of the seat back, and the other end is pivotally connected to one end of the displacement link. The other end of the displacement link is pivotally connected to the center of the left and right sides of the tray table. The structure also includes locking hooks located at the upper, middle, and lower parts of the back of the seat back, which are adapted to the locking pins. Finally, it includes a dead-point retaining device located on the fixed link or the displacement link.
[0011] Furthermore, the dead-point holding device is located at the end where the fixed link and the displacement link connect.
[0012] Furthermore, the dead-point holding device includes a sliding sleeve, a vertical rod, and a spring. The sliding sleeve is nested at the end of the fixed connecting rod or the displacement connecting rod. A first through hole is provided on the side of the sliding sleeve, and a second through hole is also provided on the fixed connecting rod or the displacement connecting rod on the same side as the sliding sleeve. One end of the spring is fixedly connected to the other inner side of the fixed connecting rod or the displacement connecting rod opposite to the second through hole, and the other end of the spring is connected to one end of the vertical rod. The other end of the vertical rod extends out of the second through hole. When the other end of the vertical rod extends out of the first through hole, one end of the sliding sleeve slides past the connection between the fixed connecting rod and the displacement connecting rod, thereby achieving dead-point holding.
[0013] Furthermore, the distance between the upper locking hook and the middle locking hook is the length of the front and rear ends of the small table.
[0014] Furthermore, the distance between the middle locking hook and the lower locking hook is twice the length of the sliding link.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] Compared to technical solutions that only offer a small table or a footrest, this invention provides both functions simultaneously for passengers to choose from, with a simple and convenient switching process. Compared to technical solutions that include both a small table and a footrest but operate independently, this invention has lower manufacturing costs, requires less space, and contributes to vehicle lightweighting and energy conservation and emission reduction. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the unfolded state of the small tabletop described in this utility model;
[0018] Figure 2 This is a schematic diagram of the small tabletop of this utility model in its stored state;
[0019] Figure 3 A diagram illustrating the process of unfolding a small table into a footrest;
[0020] Figure 4 This is a diagram illustrating the process of folding up the small table.
[0021] Figure 5 A diagram illustrating the process of unfolding a small table into a footrest;
[0022] Figure 6 This is a schematic diagram showing the fit between the locking hook and the locking pin.
[0023] In the diagram, 1-small table, 2-fixed connecting rod, 3-displacement connecting rod, 4-sliding connecting rod, 5-lateral slide groove, 6-front locking pin, 7-upper locking hook, 8-middle locking hook, 9-lower locking hook, 10-rear locking pin, 11-seat backrest, 12-A-axis, 13-sliding sleeve, 14-upright rod, 15-spring, 16-first through hole, 17-second through hole. Detailed Implementation
[0024] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. In the description of these embodiments, it should be understood that terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing these embodiments and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown:
[0026] A conversion structure for a car interior tray table and footrest includes a tray table 1, a sliding link 4, a fixed link 2, and a displacement link 3. The tray table 1 has transverse sliding grooves 5 running forward and backward on both its left and right sides. A front locking pin 6 and a rear locking pin 10 are located at the center of both the front and rear ends of the tray table 1. One end of the sliding link 4 is pivotally connected to the center of a seat back 11, and the other end of the sliding link 4 is slidably connected to the transverse sliding grooves 5 of the tray table 1. One end of the fixed link 2 is also pivotally connected to... The fixed link 2 is pivotally connected to one end of the displacement link 3 at the middle of the rear side of the seat back 11. The other end of the displacement link 3 is pivotally connected to the middle of the left and right sides of the small table 1. The seat back 11 also includes an upper locking hook 7, a middle locking hook 8, and a lower locking hook 9 at the upper rear side. The upper locking hook 7, the middle locking hook 8, and the lower locking hook 9 are adapted to the front locking pin 6 and the rear locking pin 10. The seat back 11 also includes a dead point holding device on the fixed link or the displacement link.
[0027] This structure consists of a sliding link 4, a fixed link 2, a displacement link 3, a small table 1, three locking points (upper, middle, and lower) on the seat back 11, and several pivotable fasteners. The A pivot 12 of the sliding link can slide linearly within the transverse groove 5 on the side of the small table 1. In the normal state, points O, P, and Q of the fixed link 2 and the displacement link 3 are aligned (referred to as the dead point state). A dead point holding device can keep the fixed link 2 and the displacement link 3 in the dead point state. The dead point holding device can also be manually disengaged to achieve the switching function. In this embodiment, the dead point holding device is located at the end of the displacement link 3, near the connection between the fixed link and the displacement link, such as... Figure 1 As shown. The dead-point holding device can also be located at the end of the fixed link 2.
[0028] The dead-point holding device includes a sliding sleeve 13, a vertical rod 14, and a spring 15. The sliding sleeve 15 is nested at the end of the displacement connecting rod 3. A first through hole 16 is provided on the side of the sliding sleeve 13, and a second through hole 17 is also provided on the displacement connecting rod 3 on the same side as the sliding sleeve 13. One end of the spring 15 is fixedly connected to the other inner side of the displacement connecting rod 3 opposite to the second through hole 17, and the other end of the spring 15 is connected to one end of the vertical rod 14. The other end of the vertical rod 14 extends out of the second through hole 17. When the other end of the vertical rod 14 extends out of the first through hole 16, one end of the sliding sleeve 13 slides past the connection between the fixed connecting rod and the displacement connecting rod, thus achieving dead-point holding. To release the dead-point holding state, simply press the vertical rod 14 into the second through hole 17 and then slide the sliding sleeve 13. When the sliding sleeve 13 no longer covers the connection between the fixed connecting rod and the displacement connecting rod, the dead-point holding state is released.
[0029] Small table 1 unfolded as follows: Figure 1 As shown;
[0030] Storage instructions for small table 1 (e.g.) Figure 2 , Figure 4 As shown):
[0031] (1) The small table is raised, and the A-axis of the sliding link slides forward in the slide groove until the small table is raised to fit against the back of the backrest;
[0032] (2) The small table has two fastening points at the top and middle of the position where it contacts the backrest, which can fix the small main board and prevent it from slipping out;
[0033] (3) After unlocking by pressing the button, flip the small table outwards to restore it to its unfolded state.
[0034] Instructions for converting the small tabletop from its storage state into a footrest (e.g.) Figure 3 , Figure 5 As shown):
[0035] (1) Unlock the storage buckle of the small table so that the small table can move;
[0036] (2) Release the dead point state of the fixed link and the displacement link by using the dead point holding device;
[0037] (3) The lower end of the small table moves downward and outward (e.g.) Figure 2 (As shown by the arrow) until it moves to the bottom of the seat back, the fixed link and the displacement link re-enter the dead point state, and the lower latch of the seat back engages with the inside of the small table (foot pad). At this point, the conversion from small table to foot pad is complete.
[0038] The conversion structure of this utility model belongs to a four-bar linkage slider mechanism. It only uses 3 pairs of linkages to match the small table to achieve functional conversion. Compared with the independent structure of the small table and foot pad, it reduces weight and saves assembly space. The small table is used in the front position and the foot pad is used in the back position, so dirt is isolated from each other and does not affect each other. The three fastening points on the back of the seat and the dead point design of the fixing linkage and displacement linkage can ensure that the conversion structure remains stable in different states.
[0039] As a preferred embodiment of the above implementation, the distance between the upper locking hook 7 and the middle locking hook 8 is the length of the front and rear ends of the small table, which can fix the small table 1 in the storage state.
[0040] As a preferred embodiment of the above implementation, the distance between the middle locking hook 8 and the lower locking hook 9 is twice the length of the sliding link 4, which can fix the small table 1 in the foot pad state.
[0041] Although the present invention has been described in detail above with specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A conversion structure for a small table and a footrest inside a car, characterized in that: The device includes a small table, a sliding link, a fixed link, and a displacement link. The small table has transverse sliding grooves running forward and backward on both its left and right sides. Locking pins are located at the center of both the front and rear ends of the small table. One end of the sliding link is pivotally connected to the center of the seat back, and the other end is slidably connected to the transverse sliding groove of the small table. One end of the fixed link is also pivotally connected to the center of the back of the seat, and the other end is pivotally connected to one end of the displacement link. The other end of the displacement link is pivotally connected to the center of the left and right sides of the small table. The device also includes locking hooks located at the upper, middle, and lower parts of the back of the seat, which are adapted to the locking pins. Finally, it includes a dead-point retaining device located on the fixed link or the displacement link.
2. The conversion structure between a small table and a footrest inside a car according to claim 1, characterized in that: The dead point holding device is located at the end of the connection between the fixed link and the displacement link.
3. The conversion structure between a small table and a footrest inside a car according to claim 2, characterized in that: The dead-point holding device includes a sliding sleeve, a vertical rod, and a spring. The sliding sleeve is nested at the end of a fixed connecting rod or a displacement connecting rod. A first through hole is provided on the side of the sliding sleeve, and a second through hole is also provided on the fixed connecting rod or displacement connecting rod on the same side as the sliding sleeve. One end of the spring is fixedly connected to the other inner side of the fixed connecting rod or displacement connecting rod opposite to the second through hole, and the other end of the spring is connected to one end of the vertical rod. The other end of the vertical rod extends out of the second through hole. When the other end of the vertical rod extends out of the first through hole, one end of the sliding sleeve slides past the connection between the fixed connecting rod and the displacement connecting rod.
4. The conversion structure between a small table and a footrest inside a car according to claim 1, characterized in that: The distance between the upper locking hook and the middle locking hook is the length of the front and rear ends of the small table.
5. The conversion structure between a small table and a footrest inside a car according to claim 1, characterized in that: The distance between the middle locking hook and the lower locking hook is twice the length of the sliding link.