Seat capable of being overturned and folded

Abstract

The utility model relates to a seat capable of being overturned and folded, which can be installed on a passenger car, a train and a steamship and comprises a supporting base and a cushion frame which are rotatably connected, the supporting base is arranged at the first end of the cushion frame in an offset mode, and the cushion frame can be overturned at least between a vertical state and a horizontal state relative to the supporting base. The other end deviating from the first end of the seat cushion frame is the second end of the seat cushion frame, a sliding rail is fixedly arranged on the seat cushion frame, the sliding rail extends upwards in the opposite directions of the first end and the second end of the seat cushion frame, the seat cushion further comprises an inclined supporting frame and a first locking mechanism, and the two ends of the inclined supporting frame are the rotating end and the sliding end respectively; the rotating end is rotatably connected to the supporting base, the sliding end is slidably connected to the sliding rail, and the first locking mechanism is used for locking the sliding end when the cushion frame is overturned to the horizontal flat state. The seat cushion frame can be overturned to a vertical state, the occupied space is very small, and meanwhile, the whole seat cushion frame can be well supported by adopting the design of the inclined supporting frame.

Description

Technical Field

[0001] The utility model relates to the technology of seat manufacturing, and particularly relates to a seat that can be turned and folded. Background Art

[0002] At present, seats used in vehicles such as buses, trains, and ships generally include a support base, a seat cushion frame, and a backrest frame. Among them, the support base and the seat cushion frame are usually fixedly connected, while the backrest frame and the seat cushion frame are rotatably connected to adjust the angle of the backrest. The problem with this traditional seat is that although the backrest can be folded up, the seat cushion frame still occupies a relatively large horizontal lateral space, which is inconvenient during the installation and transportation of the seat. Moreover, after the seat is installed, due to the fixed positions of the support base and the seat cushion frame, the aisle space between the seats becomes smaller, making it inconvenient to clean the environment or carry large goods. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a seat that can be turned and folded.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] The utility model provides a seat that can be turned and folded, including a support base and a seat cushion frame that are rotatably connected. The support base is offset at the first end of the seat cushion frame, and the seat cushion frame can be flipped relative to the support base at least between a vertical state and a horizontal state. Taking the other end away from the first end of the seat cushion frame as the second end of the seat cushion frame, a slide rail is fixedly arranged on the seat cushion frame, and the slide rail extends in the relative orientation of the first end and the second end of the seat cushion frame. The seat also includes a diagonal brace and a first locking mechanism. The two ends of the diagonal brace are respectively a rotating end and a sliding end. The rotating end is rotatably connected to the support base, and the sliding end is slidably connected to the slide rail. The first locking mechanism is used to lock the sliding end when the seat cushion frame is flipped to the horizontal state.

[0006] Preferably, the seat that can be turned and folded further includes an elastic member. One end of the elastic member acts on the seat cushion frame, and the other end acts on the support base. The elastic member is configured to be able to store energy during the flipping process of the seat cushion frame from the vertical state to the horizontal state and release energy during the flipping process of the seat cushion frame from the horizontal state to the vertical state.

[0007] Preferably, the elastic member is a gas spring whose two ends are respectively rotatably connected to the seat cushion frame and the support base.

[0008] Preferably, the seat that can be turned and folded further includes a second locking mechanism, which is used to lock the sliding end when the seat cushion frame is flipped to the vertical state.

[0009] Preferably, the first locking mechanism includes a hook which is rotatably connected to the seat cushion frame. The hook includes a force - applying portion and a hooked portion. The force - applying portion is used to receive an external force to rotate the hooked portion, and the hooked portion is used to hook the sliding end to achieve the locking. An elastic reset member acts on the hook to reset the rotation of the hook.

[0010] Preferably, there are two parallel slide rails, and the sliding end includes a cross bar horizontally arranged between the two slide rails. The hooked portion can be hooked on the cross bar.

[0011] Preferably, the end of the hook facing the second end of the seat cushion frame is provided with an inclined guiding surface for guiding the sliding end to pass over the hooked portion when the sliding end slides towards the hook.

[0012] Preferably, the first locking mechanism further includes a tightening screw threadedly connected to the end of the slide rail near the second end of the seat cushion frame. The tightening screw and the hooked portion can clamp on both sides of the sliding end.

[0013] Preferably, it further includes a locking mechanism for the diagonal brace. The locking mechanism for the diagonal brace is arranged on the support base and is used to lock the diagonal brace when the seat cushion frame is flipped to the vertical state.

[0014] Preferably, the diagonal brace includes diagonal brace rods extending between its rotating end and sliding end. There are three diagonal brace rods which are combined to form an "N" - shaped structure.

[0015] The utility model has the following beneficial effects: The seat cushion frame of the utility model can be flipped to the vertical state and be erected adjacent to the support base, occupying very little space. At the same time, the design of the diagonal brace is adopted, which can well support the whole seat cushion frame and also makes the space below the second end of the seat cushion frame not occupied, facilitating the cleaning of the space below the seat cushion frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall schematic diagram of the foldable and rotatable seat in Embodiment 1;

[0017] Figure 2 is the schematic diagram of the bracket part of the foldable and rotatable seat in Embodiment 1;

[0018] Figure 3 is the schematic diagram of the seat cushion frame in Embodiment 1;

[0019] Figure 4 is Figure 3 the partial enlarged view of A in

[0020] Figure 5 is the schematic diagram of the foldable and rotatable seat in Embodiment 2 (angle one);

[0021] Figure 6 It is a schematic diagram (angle two) of the flip - foldable seat in Embodiment 2;

[0022] Figure 7 It is a schematic diagram (angle three) of the flip - foldable seat in Embodiment 2. Detailed implementation manners

[0023] To further illustrate each embodiment, the present utility model provides accompanying drawings. These drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operation principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] Now, the present utility model will be further described in combination with the accompanying drawings and specific implementation manners.

[0025] Embodiment 1:

[0026] As a preferred embodiment of the present utility model, a flip - foldable seat is provided. For the convenience of description, the static orientation of the seat in the installation and use state is used as the described orientation. Refer to Figure 1 As shown, the seat includes a seat cushion 10, a backrest 20 and a bracket part. As Figure 2 shown, the bracket part includes a support base 1 and a seat cushion frame 2 that are rotatably connected. The support base 1 is used for supporting contact with the ground or other planes. For example, when the seat is used on a bus, the support base 1 can be fixedly connected to the vehicle body floor of the bus, and the fixing method can be screw connection, etc. The backrest frame 3 and the seat cushion frame 2 are rotatably connected, so that the angle of the backrest frame 3 is adjustable, and the backrest frame 3 can be folded to a position substantially overlapping with the seat cushion frame 2. The support base 1 is offset at the first end 21 of the seat cushion frame, and the seat cushion frame 2 can be flipped relative to the support base 1 at least between the vertical state and the horizontal state. In Figure 2 it, the position of the seat cushion frame 2 flipped to the vertical state is roughly indicated by a dotted line. Since the support base 1 is offset at the first end 21 of the seat cushion frame, when the seat cushion frame 2 is flipped to the vertical state, it is erected adjacent to the support base 1, occupying very little space.

[0027] The other end of the cushion frame 2 is away from the first end 21 of the cushion frame as the second end 22 of the cushion frame. The cushion frame 2 is fixed with a slide rail 4, which is extended in the relative direction between the first end 21 of the cushion frame and the second end 22 of the cushion frame. The seat also includes a diagonal support frame 5 and a first locking mechanism 6. The two ends of the diagonal support frame 5 are a rotating end 51 and a sliding end 52, respectively. A diagonal support rod extends between the rotating end 51 and the sliding end 52. The rotating end 51 can be rotatably connected to the support base 1, and the sliding end 52 can be slidably connected to the slide rail 4. The first locking mechanism 6 is used to lock the sliding end 52 when the cushion frame 2 is flipped to a horizontal state. When the seat cushion frame 2 is flipped to the horizontal state, due to the flipping of the slide rail 4, the sliding end 52 slides to a position close to the second end 22 of the seat cushion frame, so that the diagonal support frame 5 is unfolded into a diagonal support structure to support the second end 22 of the seat cushion frame. Therefore, although the support base 1 is offset from the first end 21 of the seat cushion frame, the diagonal support frame 5 and the support base 1 can still well support the entire seat cushion frame 2. This arrangement also ensures that the space below the second end 22 of the seat cushion frame is not occupied, which is convenient for cleaning the space below the seat cushion frame 2.

[0028] like Figure 4 The first locking mechanism 6 includes a hook 61 and an elastic reset member 62. The hook 61 is rotatably connected to the cushion frame 2. The hook 61 includes a force-applying portion 611 and a hook portion 612. The force-applying portion 611 and the hook portion 612 are configured to be respectively arranged on both sides of the rotation center of the hook 61 in this embodiment. The force-applying portion 611 is used to receive an external force (such as a human hand) to rotate the hook portion 612. The hook portion 612 is used to hook the sliding end 52 so as to achieve its locking of the sliding end 52. The elastic reset member 62 is a torsion spring in this embodiment. The elastic reset member 62 acts on the hook 61 to reset the rotation of the hook 61. When the sliding end 52 needs to be unlocked, the force-applying portion 611 is manually pulled so that the hook portion 612 leaves the sliding end 52, and the sliding end 52 can continue to slide toward the first end 21 of the cushion frame. At this time, the cushion frame 2 can be turned over and stood up. Once the force applied to the force-applying part 611 is released, the hook part 612 returns to the locked position under the action of the elastic reset member 62. When the cushion frame 2 is flipped from the vertical state to the horizontal state, the sliding end 52 slides toward the second end 22 of the cushion frame. At this time, the force-applying part 611 can be pulled to allow the sliding end 52 to enter the hook position of the hook part 612. Then, the force-applying part 611 is released, and the hook part 612 can hook the sliding end 52 to achieve locking. Furthermore, in this embodiment, an inclined guide surface 613 is provided at the end of the hook 61 facing the second end 22 of the cushion frame. The inclined guide surface 613 can automatically guide the sliding end 52 sliding toward the second end 22 of the cushion frame so that it passes over the hook part 612 and enters the hook position of the hook part 612.

[0029] In this embodiment, there are two parallel slide rails 4. The sliding end 52 includes a cross bar 521 horizontally disposed between the two slide rails 4, and the hook portion 612 can be hooked on the cross bar 521. Arranging two slide rails 4 can increase the support range of the diagonal brace 5, and the cross bar 521 can provide more locking positions for the first locking mechanism 6 to lock, which also facilitates the design of the first locking mechanism 6.

[0030] Additionally, in this embodiment, the first locking mechanism 6 further includes a tightening screw 63 threadedly connected to the end of the second end 22 of the slide rail 4 near the seat cushion frame. The tightening screw 63 and the hook portion 612 can clamp on both sides of the sliding end 52 to further lock the sliding end 52.

[0031] This embodiment uses the tightening screw 63 and the hook portion 612 to lock the sliding end 52. However, obviously, in other embodiments, other locking structures can also be used for substitution, such as replacing the hook portion 612 with a screw-lock type locking structure, or the first locking mechanism 6 adopting a clamping type locking structure.

[0032] Embodiment 2:

[0033] This embodiment provides a flip-foldable seat. Embodiment 1 is a single-seat chair. For example, Figures 5 - 7 in this embodiment, it is a double-seat chair. On this basis, in other embodiments, according to the different specifications of the seat cushion frame, it can also be extended to a three-seat or more multi-seat chair. This embodiment also has similar structures such as the support base 1A, the seat cushion frame 2A, the slide rail 4A, and the diagonal brace 5A as in Embodiment 1. Additionally, this embodiment further includes an elastic member 8. One end of the elastic member 8 acts on the seat cushion frame 2A, and the other end acts on the support base 1A. The elastic member 8 is configured to be able to store energy during the flipping process of the seat cushion frame 2A from the vertical state to the horizontal state and to release energy during the flipping process of the seat cushion frame 2A from the horizontal state to the vertical state. With such a setting, during the flipping process of the seat cushion frame 2A from the horizontal state to the vertical state, the elastic member 8 can provide an auxiliary driving force to drive the cushion frame 2A to flip, achieving the purpose of labor saving. The elastic member 8 is a gas spring whose two ends are respectively rotatably connected to the seat cushion frame 2A and the support base 1A in this embodiment. In other embodiments, the elastic member 8 can also be a torsion spring, a tension spring or other elastic members, but the installation method needs to be adaptively changed, which can be understood by those skilled in the art.

[0034] In addition, this embodiment further includes a second locking mechanism 7. The second locking mechanism 7 is used to lock the sliding end of the slide rail 4A when the seat cushion frame 2A flips to the vertical state. The second locking mechanism 7 adopts the same structure as the hook 61 in Embodiment 1. Arranging the hook 61 is beneficial to the position stability when the seat cushion frame 2A flips to the vertical state.

[0035] Furthermore, this embodiment further includes a stay bar locking mechanism 9 which is arranged on the support base 1A and is used to lock the stay bar 5A when the seat cushion frame 2A is flipped to the vertical state. The stay bar locking mechanism 9 can further ensure the position stability of the seat cushion frame 2A when it is flipped to the vertical state, and avoid the seat cushion frame 2A from flipping due to shaking during transportation. In this embodiment, the stay bar locking mechanism 9 is a latch structure that is rotationally unlocked or rotationally locked through threaded connection, and this locking structure can also be alternatively applied to the first locking mechanism 6.

[0036] In addition, three stay bars extending between the rotating end and the sliding end of the stay bar 5A are provided in this embodiment and are combined to form an "N" - shaped structure. This "N" - shaped structure has better stability and more stable support.

[0037] Although the present utility model is specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes made in form and detail to the present utility model without departing from the spirit and scope of the present utility model defined by the appended claims all fall within the protection scope of the present utility model.

Claims

1. A reversible and foldable seat, characterized in that: The cam frame is configured to have a first end that is adapted to move the seat cushion frame toward the support base, the second end of the cam frame being adapted to move the seat cushion frame toward the support base.

2. The reversible and foldable seat according to claim 1, characterized in that: It also includes an elastic member, one end of which acts on the seat cushion frame and the other end acts on the support base. The elastic member is configured to store energy during the flipping process of the seat cushion frame from a vertical state to a horizontal state and to release energy during the flipping process of the seat cushion frame from a horizontal state to a vertical state.

3. The reversible and foldable seat according to claim 2, characterized in that: The elastic member is a gas spring whose two ends are rotatably connected to the seat cushion frame and the support base.

4. The reversible and foldable seat according to claim 1, characterized in that: It also includes a second locking mechanism, which is used to lock the sliding end when the seat cushion frame is flipped to a vertical state.

5. The reversible and foldable seat according to claim 1, characterized in that: The first locking mechanism includes a hook, which is rotatably connected to the cushion frame. The hook includes a force-applying portion and a hook portion. The force-applying portion is used to receive external force to rotate the hook portion, and the hook portion is used to hook the sliding end to achieve the locking. An elastic reset member acts on the hook to reset the rotation of the hook.

6. The reversible and foldable seat according to claim 5, characterized in that: The slide rails are provided with two parallel ones, the sliding end comprises a cross bar which is horizontally arranged between the two slide rails, and the hook portion can be hooked on the cross bar.

7. The reversible and foldable seat according to claim 5, characterized in that: An end portion of the hook facing the second end of the cushion frame is provided with an inclined guiding surface for guiding the sliding end to pass over the curved hook portion when the sliding end slides toward the hook.

8. The reversible and foldable seat according to claim 5, characterized in that: The first locking mechanism also includes a clamping screw threadedly connected to the end of the slide rail close to the second end of the cushion frame, and the clamping screw and the hook portion can be clamped on both sides of the sliding end.

9. The reversible and foldable seat according to claim 1, characterized in that: It also includes a diagonal support frame locking mechanism, which is arranged on the support base and is used to lock the diagonal support frame when the seat cushion frame is flipped to a vertical state.

10. The flip-foldable seat according to claim 1 or 6, characterized in that: The diagonal support frame includes a diagonal support rod extending between a rotating end and a sliding end thereof, and the diagonal support rod is provided with three branches and combined to form an "N"-shaped structure.

Images