Sliding door structure and seat

Abstract

The utility model relates to a sliding door structure and a seat, wherein the sliding door structure comprises a support frame and a door panel mounted on the support frame, wherein a door opening is provided on the support frame, and the door panel moves relative to the support frame to open and close the door opening, and the sliding door structure further comprises two connecting rods hinged between the door panel and the support frame, and an elastic member connected to the two connecting rods and capable of maintaining a preload force throughout the entire process as the relative positions of the two connecting rods change. The utility model can provide a retaining force for the entire sliding process of the door panel through the coordinated arrangement of the elastic member and the two connecting rods, thus realizing a bistable function, and only needs to provide an initial driving force to the door panel, and under the action of the elastic member and the two connecting rods, the door panel can realize a suction feeling of automatic opening or automatic closing, thereby improving the texture.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a sliding door structure and a seat. Background Art

[0002] Nowadays, people rely more and more on cars for their daily travel, and have higher and higher requirements for the experience of riding in cars. In order to meet the needs of rear passengers and take up as little space as possible in the car, some cars are equipped with multi-purpose bases (for plugging in, etc.) or rear-open box structures for placing small items (such as water cups, mobile phones, etc.) in the front seat backs, and a sliding door structure is set on the outside to open or close the multi-purpose base or box structure.

[0003] Traditional sliding door structures are almost all designed by setting a slide groove on the door frame so that the door panel is slidably connected to the slide groove, and the door panel is driven manually or electrically to slide along the slide groove to open or close the multi-purpose base or box structure, such as:

[0004] 1. Patent CN202121270679.8 relates to a switchable backrest platform for a car seat. The sliding door structure disclosed therein requires manual pushing of the door panel to make the door panel slide relative to the cover panel.

[0005] 2. Patent CN202122274705.0 relates to a multi-purpose seat back assembly, which specifically discloses two sliding door structure embodiments. One is to set a gear tooth meshing structure to cooperate with the electric drive to achieve automatic sliding of the door panel along the slide groove, and the other requires manual pushing of the door panel to slide along the slide groove.

[0006] The above sliding door structure, whether manually driven or electrically driven, requires force to be applied throughout the entire process, which consumes a lot of power. Moreover, when the seat vibrates, the door panel has the risk of shaking, shifting, and making abnormal noises. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a sliding door structure and a seat. Through the coordinated arrangement of the elastic member and the two connecting rods, it can provide a retaining force for the door panel throughout the sliding process, thereby realizing a bistable function. Moreover, it only needs to provide an initial driving force to the door panel. Under the action of the elastic member and the two connecting rods, the door panel can achieve a suction feeling of automatic opening or automatic closing, thereby improving the texture.

[0008] The utility model is implemented through the following scheme: a sliding door structure, including a support frame and a door panel installed on the support frame, the support frame is provided with a door opening, the door panel moves relative to the support frame to open and close the door opening, the sliding door structure also includes two connecting rods hinged between the door panel and the support frame, and an elastic member connected to the two connecting rods and capable of maintaining a preload force throughout the entire process as the relative positions of the two connecting rods change.

[0009] A further improvement of the sliding door structure of the utility model is that the two connecting rods include a first connecting rod and a second connecting rod, the first end of the first connecting rod is rotatably connected to the support frame via a first rotating shaft, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod via a second rotating shaft, and the second end of the second connecting rod is rotatably connected to the door panel via a third rotating shaft.

[0010] A further improvement of the sliding door structure of the utility model is that the elastic member is a torsion spring, which is sleeved on the second rotating shaft, and the two ends of the elastic member respectively abut against the opposite inner sides of the first connecting rod and the second connecting rod.

[0011] A further improvement of the sliding door structure of the utility model is that sliding grooves are provided on both sides of the support frame, and the door panel moves along the sliding grooves to open and close the door opening.

[0012] A further improvement of the sliding door structure of the present invention is that the sliding groove includes a first groove section and a second groove section, the first groove section includes a corner offset away from the first rotating shaft relative to the extension direction of the first groove section, the third rotating shaft is connected to the first end of the door panel and inserted into the first groove section, and the second end of the door panel is inserted into the second groove section through a fourth rotating shaft.

[0013] A further improvement of the sliding door structure of the utility model is that both ends of the first groove section are provided with stop points, and the third rotating shaft is limited by the stop points when the door panel is in the state of opening the door opening and closing the door opening respectively.

[0014] A further improvement of the sliding door structure of the utility model is that the first slot section and the second slot section can be disconnected or connected.

[0015] A further improvement of the sliding door structure of the utility model is that the third rotating shaft and the fourth rotating shaft are respectively sleeved with sleeves for padding the gap between the side edge of the door panel and the sliding groove on the corresponding side.

[0016] The utility model also provides a seat, comprising a seat back plate equipped with the sliding door structure as described in any one of the above items.

[0017] A further improvement of the utility model seat is that the door panel is flush with the surface of the seat back panel when sliding to close the door opening, and the door panel is hidden inside the seat back panel when sliding to open the door opening. The utility model includes but is not limited to the following beneficial effects:

[0018] 1. By using an elastic member and a two-link mechanism, a bistable function of the door panel is achieved: the elastic member provides a preload force to the door panel throughout the entire process and the relative position between the first link and the second link changes, so that when the door panel is in a closed state, under the action of the preload force of the elastic member, the second link pushes the door panel in a positive / reverse direction to prevent it from opening or vibrating and making abnormal noises due to the bumps of the vehicle; when the door panel is in an open state, under the action of the preload force of the elastic member, the second link pushes the door panel in a negative / positive direction to prevent it from sliding or vibrating and making abnormal noises due to gravity and vehicle vibrations.

[0019] 2. Through the coordinated setting between the door panel, the two connecting rods and the elastic part, when only an initial driving force is given to the door panel, the elastic part can store energy for the continued sliding of the door panel, and the suction feeling of automatic opening or automatic closing can be achieved without providing driving force throughout the whole process, thereby improving the texture.

[0020] 3. The double-section slide design enables non-linear movement of the door panel: the door panel is hidden inside the seat back panel when open, and is flush with the seat back panel surface when closed, making the sliding door structure and the seat back panel surface smooth and continuous. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The schematic diagram of the disassembled state of the sliding door structure, the support frame and the chair back plate of the utility model is shown.

[0022] Figure 2 The schematic diagram shows the assembly state of the sliding door structure and the support frame of the utility model.

[0023] Figure 3 The schematic diagram of the exploded state of the two connecting rods and the torsion spring in the utility model is shown.

[0024] Figure 4 The schematic diagram of the assembly state of the two connecting rods and the torsion spring in the utility model is shown.

[0025] Figure 5 The schematic diagram of the layout position of the limit ring in the utility model is shown.

[0026] Figure 6 The schematic diagram of the exploded state of the two connecting rods and the door panel in the utility model is shown.

[0027] Figure 7 The schematic diagram shows the assembly state of the two connecting rods and the door panel in the utility model.

[0028] Figure 8 The front view of the assembly state of the sliding door structure and the support frame of the utility model is shown.

[0029] Fig. 9 A schematic diagram of the opening movement process of the door panel in the utility model is shown.

[0030] Fig.10 Shown in Figure 8 Schematic diagram of the door panel opening movement process under the AA angle.

[0031] Fig.11 A partial structural schematic diagram of the support frame in the utility model is shown.

[0032] Fig.12 A half-section schematic diagram of the support frame of the present invention is shown.

[0033] Fig.13 Shows Fig.11 Enlarged schematic diagram of point B in the middle.

[0034] Fig.14 Shows Fig.11 Enlarged schematic diagram at point C in the middle.

[0035] Fig.15 A comparative schematic diagram showing a closed door opening and an open door opening when the sliding door structure of the utility model is assembled on a chair back plate is shown. DETAILED DESCRIPTION

[0036] In order to solve the problem that the traditional sliding door structure needs to apply force throughout the whole process, consumes a lot of power, and when the seat vibrates, the door panel has the risk of shaking, shifting and making abnormal noises, the utility model provides a sliding door structure and a seat, which can provide a holding force for the door panel to slide throughout the whole process through the coordination of the elastic member and the two connecting rods, realize the bistable function, and only need to give the door panel an initial driving force, under the action of the elastic member and the two connecting rods, the door panel can realize the suction feeling of automatic opening or automatic closing, and improve the texture. The sliding door structure and the seat are further described below with specific embodiments and drawings.

[0037] See also Figure 1 and Figure 2 As shown, a sliding door structure is installed on a chair back plate 1, and an opening 11 connected to the interior is vertically opened on the chair back plate 1, a support frame 2 is installed at the opening 11, and a door opening 21 for extending into the interior of the chair back plate 1 is opened at the lower part of the support frame 2, and slide grooves 22 are provided on both sides of the support frame 2. The sliding door structure includes: a door panel 3 that is slidably installed between the slide grooves 22 on both sides and can open and close the door opening 21; two connecting rods 4 hinged between the upper ends of the door panels 3 and the support frame 2; and an elastic member 6 connected to the two connecting rods 4 and can maintain the preload force throughout the entire process as the relative positions of the two connecting rods 4 change.

[0038] In this embodiment, the connection of the two connecting rods 4 is described in detail. Figure 3 and Figure 4As shown, the two connecting rods 4 include a first connecting rod 41 and a second connecting rod 42 in a plate shape. The first end of the first connecting rod 41 is provided with first sleeves 81 on both sides, and is rotatably connected to the two sides of the support frame 2 through the first rotating shaft 51. Specifically, the two opposite inner ends of the two first rotating shafts 51 are formed with external threads, and the two first sleeves 81 are formed with internal threads that match the external threads. The two first rotating shafts 51 are respectively screwed into the two first sleeves 81, and the outer ends extend outwardly with two first sleeves 81, and are rotatably connected to the two sides of the support frame 2. Correspondingly, the two sides of the support frame 2 are provided with connection structures for the first sleeves 81 to connect, and the connection structures can be through holes or bayonet sockets, see Fig.11 As shown, in this embodiment, one side is preferably set as a through hole 223 and the other side is set as a U-shaped bayonet 224. By setting one side as an open type, the disassembly and assembly between the first connecting rod 41 and the support frame 2 is more convenient.

[0039] The second connecting rod 42 has third sleeves 83 on both sides of the first end, and a second notch for accommodating a torsion spring is formed between the two third sleeves 83. The second end of the first connecting rod 41 has second sleeves 82 on both sides, and a first notch for accommodating the two third sleeves 83 and the torsion spring is formed between the two second sleeves 82. The second rotating shaft 52 is used to simultaneously penetrate and connect the two second sleeves 82, the two third sleeves 83 and the torsion spring to achieve the rotational connection between the first connecting rod 41 and the second connecting rod 42. At the same time, the two ends of the torsion spring are pressed against the relative inner sides of the first connecting rod 41 and the second connecting rod 42 to achieve the linkage change of the torsion spring and the second connecting rod 4. Preferably, the second connecting rod 41 is equipped with a second rotating shaft 52. Figure 5 As shown, in order to ensure that the two ends of the torsion spring will not move relative to the first connecting rod 41 and the second connecting rod 42, a stop ring 8 for inserting the ends of the torsion spring is fixed to the relative inner sides of the first connecting rod 41 and the second connecting rod 42. It should be noted that in order to prevent the second rotating shaft 52 from coming out, at least one of the two second sleeves 82 is provided with an internal thread, and the corresponding end of the second rotating shaft 52 is provided with an adapted external thread, and is connected by a screw connection.

[0040] Cooperate Figure 6 and Figure 7As shown, a fourth shaft sleeve 84 is provided at the second end of the second connecting rod 42, and first through holes 31 are provided at opposite sides of the first end of the door panel 3. A third rotating shaft 53 passes through the fourth shaft sleeve 84, and two ends of the third rotating shaft 53 respectively pass through two first through holes 31 to the outside, and form a first extension section for inserting into the two side slide grooves 22. The third rotating shaft 53 is used to realize the rotation connection between the second connecting rod 42 and the first end of the door panel 3, and to realize the sliding connection between the door panel 3 and the two side slide grooves 22. Similarly, in order to prevent the third rotating shaft 53 from slipping off, the third rotating shaft 53 can be set to be threadedly connected with a fourth shaft sleeve 84 or with a first through hole 31. In addition, the second end of the door panel 3 is slidably connected to the sliding grooves 22 on both sides through a fourth rotating shaft 54. Specifically, second through holes 32 with internal threads are relatively opened on both sides of the second end of the door panel 3. The number of the fourth rotating shafts 54 is two. The relative inner ends of the two fourth rotating shafts 54 are provided with external threads to realize threaded connection with the two second through holes 32. The relative outer ends of the two fourth rotating shafts 54 extend outwardly to form two second through holes 32 and form two second extension sections for being respectively inserted into the sliding grooves 22 on both sides.

[0041] Preferably, in order to prevent the door panel 3 from shaking when sliding due to the gap between the door panel 3 and the two side slide grooves 22, a sleeve 71 is sleeved on the first extension section of the third rotating shaft 53 and the second extension section of the fourth rotating shaft 54, so that the sleeve 71 can be cushioned in the gap between the side edge of the door panel 3 and the corresponding side slide groove 22. Correspondingly, in order to prevent the two connecting rods from shaking due to the gap between the support frame 2 and the first shaft sleeve 81, sleeves 72 can also be sleeved on the outer ends of the two first rotating shafts 51, so that the sleeve 72 can be cushioned in the gap between the inner side edge of the support frame 2 and the first shaft sleeve 81 on the corresponding side.

[0042] As a preferred embodiment, Figures 10 to 12As shown, both sides of the slide groove 22 are double groove section structures, including a first groove section 221 and a second groove section 222. The first groove section 221 includes a corner 2211 that is offset away from the first rotating shaft 51 relative to the extension direction of the first groove section 221. The third rotating shaft 53 is connected to the first end of the door panel 3 and inserted into the first groove section 221 at the first extension section. The second end of the door panel 3 is inserted into the second groove section 222 through the second extension section of the fourth rotating shaft 54. By setting the corner 2211 at the starting point (i.e., the closed state) where the first groove section 221 cooperates with the third rotating shaft 53, since the corner 2211 is offset away from the first rotating shaft 51 relative to the extension direction of the first groove section 221, it can be realized that the door panel 3 sinks and is hidden inside the seat back plate 1 when sliding to open the door opening. The first groove section 221 and the second groove section 222 can be disconnected or connected. This embodiment realizes the non-linear motion of the door panel 3 by designing a double-section slide groove: Fig.15 As shown, the door panel 3 is hidden inside the seat back panel 1 when open, and is flush with the surface of the seat back panel 1 when closed, so that the sliding door structure and the surface of the seat back panel 1 present a smooth and continuous shape. Unlike the traditional linear sliding structure, the shape needs to be sunken and cannot be continuous.

[0043] Preferably, see Figure 12 to Figure 14 As shown, the upper end of the first slot section 221 (i.e. Fig.12 B) and the lower end (i.e. Fig.12 C) are provided with a stop point 225. The stop point 225 of this embodiment is formed by the groove walls on both sides of the slide groove 22 protruding inwards relative to each other, and is in an arc shape. The third rotating shaft 53 is blocked above the stop point at the upper end and below the stop point at the lower end when the door panel 3 is in the state of opening the door opening and closing the door opening. Through the setting of the stop point 225, when the door panel 3 is opened and closed, the third rotating shaft 53 first contacts the stop point 225, thereby reducing the sliding speed of the door panel 3. Further, rubber pads 226 are provided at the upper and lower ends of the first groove section 221, and the distance between the rubber pad 226 and the adjacent stop point 225 is not less than the diameter of the first extension section of the third rotating shaft 53. Through the setting of the rubber pad 226, it is possible to prevent the third rotating shaft 53 from hitting the upper and lower ends of the first groove section 221 due to excessive pre-tightening force of the elastic member 6 or large vibration of the seat, thereby improving the service life of the structure and minimizing the switching noise.

[0044] The above sliding door structure can be installed on various chair backs, and only the double-section slide groove structure needs to be adapted and adjusted, so that the sliding door structure and the surface of the chair back 1 can be smoothly and coherently shaped. Of course, the above sliding door structure is not limited to being installed on the chair back, and it can also be installed on a storage box. When installed on the storage box, the installation position of each component is adjusted based on the direction of the storage box opening. For the above embodiment installed on the chair back, because the door opening is vertically opened, each component is arranged based on the up, down, left, and right directions of the vertical door opening. If the storage box opening is horizontal, each component will be arranged based on the front, back, left, and right directions of the horizontal opening. The specific arrangement position is adjusted based on the actual situation.

[0045] For the operation principle of the door panel 3 from closing the door opening to opening the door opening, refer to Figure 8 to Figure 10 As shown:

[0046] In the closed state, the angle between the first connecting rod 41 and the second connecting rod 42 is an initial angle (the initial angle is designed according to actual conditions. In this embodiment, the initial angle is set to be smaller than the angle when the elastic member 6 is in the reset state, so as to satisfy a certain pre-tightening force), and the second connecting rod 42 is located relatively below the first connecting rod 41 (that is, the third rotating shaft 53 is located below the first rotating shaft 51 and the second rotating shaft 52 at the same time). Therefore, under the elastic reset tendency of the elastic member 6, the second connecting rod 42 pushes the door panel 3 downward to ensure that the door panel 3 is stable in the state of closing the door opening.

[0047] When an initial upward driving force is artificially given to the door panel 3, the door panel 3 will move upward along the slide slot 22 (specifically, the third shaft 53 slides upward along the first slot section 221, and the fourth shaft 54 ​​slides upward along the second slot section 22). As the door panel 3 slides upward, the second connecting rod 42 is driven to swing upward, and the angle between the first connecting rod 41 and the second connecting rod 42 gradually decreases. The preload force of the elastic member 6 gradually increases and accumulates energy. When the second connecting rod 42 swings to a position relatively above the first connecting rod 41 (that is, the third shaft 53 is simultaneously located at the first shaft 51 and the second rotating shaft 52), the second connecting rod 42 is changed to push the door panel 3 upward. At this time, the initial driving force may no longer be provided, and under the action of the preload force accumulated in the elastic member 6, the second connecting rod 42 continues to swing, thereby pushing the door panel 3 to continue to slide upward, and the angle between the first connecting rod 41 and the second connecting rod 42 gradually increases, and the preload force of the elastic member 6 gradually decreases. However, until the door panel 3 slides to the state of fully opening the door opening, the elastic member 6 still has a certain preload force to ensure that the door panel 3 is stable in the state of opening the door opening.

[0048] In summary, by using the elastic member 6 and the two-link 4 mechanism, the bistable function of the door panel 3 is realized: the elastic member 6 provides pre-tightening force to the door panel 3 throughout the whole process and cooperates with the relative position change between the first link 41 and the second link 42, so that when the door panel 3 is in the closed state, under the action of the pre-tightening force of the elastic member 6, the second link 42 pushes the door panel 3 in the positive / reverse direction, so that it will not open or vibrate due to the bumps of the vehicle; when the door panel 3 is in the open state, under the action of the pre-tightening force of the elastic member 6, the second link 42 pushes the door panel 3 in the reverse / positive direction, so that it is not easy to slide or vibrate due to gravity and vehicle vibration. And through the coordinated setting between the door panel 3, the two-link 4 and the elastic member 6, when only an initial driving force is given to the door panel 3, the elastic member 6 can store energy for the continued sliding of the door panel 3, and the suction feeling of automatic opening or automatic closing can be achieved without providing driving force throughout the whole process, which improves the texture.

[0049] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A sliding door structure, comprising a support frame and a door panel mounted on the support frame, wherein a door opening is formed on the support frame, and the door panel moves relative to the support frame to open and close the door opening, characterized in that: The sliding door structure also includes two connecting rods hinged between the door panel and the support frame, and an elastic member connected to the two connecting rods and capable of maintaining a preload force throughout the entire process as the relative positions of the two connecting rods change.

2. The sliding door structure according to claim 1, characterized in that: The two-link rod includes a first link and a second link, the first end of the first link is rotatably connected to the support frame via a first rotating shaft, the second end of the first link is rotatably connected to the first end of the second link via a second rotating shaft, and the second end of the second link is rotatably connected to the door panel via a third rotating shaft.

3. The sliding door structure according to claim 2, characterized in that: The elastic member is a torsion spring, which is sleeved on the second rotating shaft, and two ends of the elastic member are respectively pressed against the opposite inner sides of the first connecting rod and the second connecting rod.

4. The sliding door structure according to claim 2, characterized in that: Slide grooves are arranged on both sides of the support frame, and the door panel moves along the slide grooves to open and close the door opening.

5. The sliding door structure according to claim 4, characterized in that: The slide groove includes a first groove section and a second groove section, the first groove section includes a corner offset away from the first rotating shaft relative to the extension direction of the first groove section, the third rotating shaft is connected to the first end of the door panel and inserted into the first groove section, and the second end of the door panel is inserted into the second groove section through the fourth rotating shaft.

6. The sliding door structure according to claim 5, characterized in that: Stop points are provided at both ends of the first slot section, and the third rotating shaft is limited by the stop points when the door panel is in an open door opening state and a closed door opening state, respectively.

7. The sliding door structure according to claim 5, characterized in that: The first slot section and the second slot section are disconnected or connected.

8. The sliding door structure according to claim 5, characterized in that: The third rotating shaft and the fourth rotating shaft are respectively sleeved with sleeves for padding the gap between the side edge of the door panel and the sliding groove on the corresponding side.

9. A seat, characterized in that: It comprises a chair back panel equipped with the sliding door structure as claimed in any one of claims 1 to 8.

10. The seat according to claim 9, characterized in that The door panel is flush with the surface of the seat back panel when sliding to close the door opening, and is hidden inside the seat back panel when sliding to open the door opening.

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