Folding assembly for seat and seat
By designing a folding assembly of limiting hinges and linkage parts between the chair back and the seat, the problems of comfort and convenience of existing folding seats during the folding process are solved, and the effect of quick folding without removing the filler is achieved.
Patent Information
- Application Number
- CN202422641057.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing folding seats need to sacrifice comfort or convenience during the folding process and cannot be folded quickly without removing the filling.
A folding assembly is designed, including a limiting hinge and a linkage part, which forms an accommodating space between the chair back and the seat to accommodate fillers, thereby achieving rapid folding without removing the fillers.
It can be quickly folded without removing the filling, maintaining the comfort and convenience of the seat, and is easy to store and carry at home.
Smart Images
Figure CN223349851U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of seats, and in particular relates to a folding assembly for seats and the seats. Background Art
[0002] Common folding seat frames on the market typically utilize an X-shaped or V-shaped folding structure, with the folding point located at the junction of the backrest and seat. These folding methods are characterized by the fact that the frame fits tightly together after folding, leaving no space for external padding. Consequently, these folding seats are typically designed as unpadded, rigid seats, hollow seats with no padding at the lumbar support, or split seats where the padding must be removed before folding. In short, achieving the desired folding effect with either an X-shaped or V-shaped structure requires sacrificing some comfort or convenience. Utility Model Content
[0003] In view of this, the present invention hopes to provide a folding assembly for a seat, which allows the seat to retain padding for supporting the waist and back, and can be quickly folded without removing the padding.
[0004] The utility model is achieved through the following technical solutions:
[0005] A folding assembly for a seat, comprising at least two sets of folding members arranged side by side, each set of folding members comprising:
[0006] A limiting hinge having a seat back hinge portion and a seat seat hinge portion that are spaced apart, and a seat back limiting groove and a seat seat limiting groove that are spaced apart;
[0007] The backrest hinge portion is provided with a first axis for the backrest hinge movement, and the seat hinge portion is provided with a second axis for the seat hinge movement, and the second axis is parallel to the first axis;
[0008] The folding assembly also includes:
[0009] A chair back linkage member drives the chair back to fold and unfold, one end of the chair back linkage member being hinged to the chair back hinge portion, and the chair back linkage member having a chair back sliding portion slidably connected to the chair back limiting groove;
[0010] A seat linkage member drives the seat to fold and unfold, one end of the seat linkage member being hinged to the seat hinge portion, and the seat linkage member having a seat sliding portion slidably connected to the seat limiting groove;
[0011] The two ends of the seatback limiting groove cooperate with the seatback sliding portion to form a limiting structure for the trajectory of the seatback's hinged movement; the two ends of the seatback limiting groove cooperate with the seatback sliding portion to form a limiting structure for the trajectory of the seat's hinged movement. In the folded state, an accommodating space is formed between the seatback linkage and the seat linkage. When the folding member is folded, the accommodating space can accommodate filling material on the seat surface, preventing the filling material from accumulating and hindering the seat from folding.
[0012] Preferably, the folding component includes a linkage part, having a backrest linkage part and a seat linkage part arranged at intervals, the backrest linkage part is hinged to the backrest and has a third axis for the backrest hinged movement, the seat linkage part is hinged to the seat and has a fourth axis for the seat hinged movement; the third axis has a first rotation trajectory around the first axis, and the fourth axis has a second rotation trajectory around the second axis. When folding and unfolding, the first rotation trajectory and the second rotation trajectory have opposite rotation directions.
[0013] Preferably, in the unfolded state, a bearing structure corresponding to a sitting posture or a lying posture is formed between the chair back linkage member and the chair seat linkage member.
[0014] Preferably, in the unfolded state, the first axis and the second axis are both located on the folding reference plane, and the third axis and the fourth axis are respectively located on both sides of the folding reference plane.
[0015] Preferably, the chair back sliding portion has a third rotation trajectory surrounding the first axis, and the two ends of the chair back limiting groove constitute a limiting structure for the third rotation trajectory; the seat sliding portion has a fourth rotation trajectory surrounding the second axis, and the two ends of the seat limiting groove constitute a limiting structure for the fourth rotation trajectory.
[0016] Preferably, the folding assembly comprises two groups of folding parts arranged side by side, one on each side of the seat.
[0017] Preferably, the position-limiting hinge is a rigid rod-shaped member, and the backrest hinge and the seat hinge are located at two ends respectively.
[0018] Preferably, the chair back limiting groove is located on the chair back hinge portion; the seat limiting groove is located on the seat hinge portion.
[0019] Preferably, the linkage member is a rigid rod-shaped member, and the chair back linkage portion and the chair seat linkage portion are respectively located at two ends.
[0020] The present invention also provides a seat comprising a seat and a backrest, wherein the connection structure between the seat and the backrest comprises any one of the above-mentioned folding components.
[0021] The utility model constructs a folding member with a U-shaped folding shape by overlapping a limit hinge and a linkage between the chair back linkage and the seat linkage. When the folding member is operated to unfold, the limit hinge and the linkage provide a connection with a gentle arc between the chair back linkage and the seat linkage, which can provide the user with comfortable sitting or lying support when used on a seat. When the folding member is folded, the limit hinge and the linkage support form a storage space between the chair back and the seat, where fillers can be naturally piled up. It can be folded directly without first removing the fillers, which is convenient for home storage, camping carrying, and boxing and transportation. In addition, the unfolding and folding operation of the seat is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a side schematic diagram of the limiting hinge part in the unfolded state of a single set of folding parts.
[0023] Figure 2 This is a schematic diagram of the linkage side of a single set of folding parts in the unfolded state.
[0024] Figure 3 It is a side schematic diagram of the limiting hinge part of a single set of folding parts in the folded state.
[0025] Figure 4 It is a schematic diagram of the linkage part side of a single set of folding parts in the folded state.
[0026] Legend:
[0027] 1. Limit hinge; 1.1. Back hinge; a. First axis; 1.2. Seat hinge; b. Second axis; 1.3. Back limit slot; 1.4. Seat limit slot; e. Folding reference surface;
[0028] 2. Chair back linkage; 2.1. Chair back sliding part;
[0029] 3. Seat linkage; 3.1. Seat sliding part;
[0030] 4. Linkage parts; 4.1. Chair back linkage; c. Third axis; 4.2. Chair seat linkage; d. Fourth axis;
[0031] 5. Accommodation space. DETAILED DESCRIPTION
[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Based on these descriptions, a person skilled in the art will be able to implement the present invention. Furthermore, the embodiments of the present invention described below generally represent only a portion of the present invention, rather than all of the embodiments. Therefore, all other embodiments derived by a person skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.
[0033] Example 1
[0034] See Figure 1 and Figure 2 . In the basic embodiment, a single set of folding parts in the folding assembly includes a limit hinge 1, a backrest linkage 2, and a seat linkage 3, which can be unfolded and folded within a specified range. The limit hinge 1 is a rigid rod-shaped part, one end of which is connected to the backrest linkage 2 through the backrest hinge 1.1, and the hinge is the first axis a; the other end is connected to the seat linkage 3 through the seat hinge 1.2, and the hinge is the second axis b; the first axis a is parallel to the second axis b, and the two axes are simultaneously located on the folding reference plane e. A backrest sliding part 2.1 is provided on the backrest linkage 2. In an alternative embodiment, the backrest sliding part 2.1 is a round pin that passes through the backrest linkage 2 and the backrest limit groove 1.3, and the round pin has a third rotation trajectory around the first axis a; the two ends of the backrest limit groove 1.3 correspond to the starting position and the end position of the third rotation trajectory, respectively, and the backrest sliding part 2.1 can slide freely in the backrest limit groove 1.3. A seat sliding portion 3.1 is provided on the seat linkage 3. In the alternative embodiment, the seat sliding portion 3.1 is a round pin that passes through the seat linkage 3 and the seat limiting groove 1.4, and the round pin has a fourth rotation trajectory around the second axis b; the two ends of the seat limiting groove 1.4 correspond to the starting position and the end position of the fourth rotation trajectory respectively, and the seat sliding portion 3.1 can slide freely in the seat limiting groove 1.4.
[0035] In a preferred embodiment, the single set of folding parts in the folding assembly also includes a linkage member 4. The function of the linkage member 4 is to dynamically link the backrest linkage member 2 and the seat linkage member 3 so that the two can fold or unfold simultaneously. The linkage member 4 is a rigid rod-shaped member, one end of which is hinged to the backrest linkage member 2 through the backrest linkage part 4.1, and the hinge point is the third axis c; the other end is hinged to the seat linkage member 3 through the seat linkage part 4.2, and the hinge point is the fourth axis d; the third axis c and the fourth axis d are respectively located on both sides of the folding reference plane e. The third axis c has a first rotation trajectory around the first axis a, and the fourth axis d has a second rotation trajectory around the second axis b. When folding and unfolding, the first rotation trajectory and the second rotation trajectory have opposite rotation directions. Since the backrest linkage member 2 and the seat linkage member 3 are arranged on both sides of the folding member, the opposite rotation directions correspond to the same folding or unfolding action.
[0036] See Figure 2 and Figure 4 In the unfolded state, either the backrest linkage 2 or the seat linkage 3 can independently serve as the active member to drive the folding member to fold. When one serves as the active member, the other serves as the driven member. In this embodiment, the counterclockwise rotation of the backrest linkage 2 about the first axis a and the clockwise rotation of the seat linkage 3 about the second axis b correspond to the folding action of the folding member, while the clockwise rotation of the backrest linkage 2 about the first axis a and the counterclockwise rotation of the seat linkage 3 about the second axis b correspond to the unfolding direction of the folding member. Taking the case where the seat linkage 3 is the active part as an example, when the seat linkage 3 rotates counterclockwise around the second axis b, the seat hinge part 3.1 and the fourth axis d on the seat linkage 3 both have the dynamic rotation counterclockwise around the second axis b; wherein, the dynamic of the fourth axis d is transmitted to the third axis c located on the other side of the folding reference plane e through the linkage 4, and the third axis c has a rotation trajectory opposite to that of the fourth axis d, that is, the third axis c will rotate clockwise around the first axis a, at this time, the chair back linkage 2 becomes the driven part of the seat linkage 3, and the two together complete the folding action of the folding part.
[0037] See Figure 3 and Figure 4, a single set of folding parts is already in a folded state. The backrest sliding part 2.1 has slid to the edge of the backrest limiting groove 1.3, and the counterclockwise rotation of the backrest linkage part 2 is blocked; the seat sliding part 3.1 has also slid to the edge of the seat sliding part 1.4, and the clockwise rotation of the seat linkage part 3 is blocked. A stable accommodating space 5 is formed between the backrest linkage part 2 and the seat linkage part 3. At this time, applying external force to either the backrest linkage part 2 or the seat linkage part 3 can make it act as an active part alone to easily drive the folding part to unfold, that is, the backrest linkage part 2 rotates clockwise around the first axis a, and at the same time, the backrest linkage part 2 rotates counterclockwise around the first axis a. The dynamic transmission process in the unfolding action corresponds to the aforementioned folding action.
[0038] Example 2
[0039] A foldable soft chair comprises a seat frame, a back frame, a filler wrapped around the frame, and an integral outer cover wrapped around the filler. The seat frame and the back frame are connected by a set of folding components, each set of folding components comprising two sets of folding parts as described in Example 1, with the folding parts arranged side by side on either side of the soft chair. The back linkage 2 of the folding parts is connected to the back frame, driving the backrest to fold and unfold; the seat linkage 3 is connected to the seat frame, driving the backrest to fold and unfold. When the folding parts are unfolded, a load-bearing structure corresponding to a sitting or lying position is formed between the back linkage 2 and the seat linkage 3.
[0040] When the soft chair is unfolded, the seat and back frames, combined with the padding on the surface, provide comfortable and stable support. To fold, the user simply pushes the backrest in the folding direction. The padding at the folding point naturally accumulates in the storage space where the backrest and seat meet, allowing the soft chair to be folded to its full extent, making it convenient for packing, home storage, camping, and other travel. To unfold the soft chair, first place it in its intended orientation, with the backrest naturally facing upwards. Press the seat and push the backrest in the unfolding direction simultaneously to restore it to its original position.
Claims
1. A folding assembly for a seat, characterized in that: It comprises at least two groups of folding parts arranged side by side, each group of folding parts comprises: A position-limiting hinge (1) comprising a seat back hinge portion (1.1) and a seat seat hinge portion (1.2) arranged at intervals, and a seat back position-limiting groove (1.3) and a seat seat position-limiting groove (1.4) arranged at intervals; The backrest hinge portion (1.1) is provided with a first axis (a) for backrest hinge movement, and the seat hinge portion (1.2) is provided with a second axis (b) for seat hinge movement, and the second axis (b) is parallel to the first axis (a); The folding assembly also includes: A chair back linkage member (2) drives the chair back to fold and unfold, one end of the chair back linkage member (2) is hinged to the chair back hinged portion (1.1), and the chair back linkage member (2) has a chair back sliding portion (2.1) slidably connected to the chair back limiting groove (1.3); A seat linkage member (3) drives the seat to fold and unfold, one end of the seat linkage member (3) is hinged to the seat hinge portion (1.2), and the seat linkage member (3) has a seat sliding portion (3.1) slidably connected to the seat limiting groove (1.4); The two ends of the chair back limiting groove (1.3) cooperate with the chair back sliding part (2.1) to form a limiting structure for the trajectory of the chair back hinged activity; the two ends of the chair seat limiting groove (1.4) cooperate with the chair seat sliding part (3.1) to form a limiting structure for the trajectory of the chair seat hinged activity; In the folded state, an accommodating space (5) is formed between the chair back linkage member (2) and the chair seat linkage member (3).
2. The folding assembly according to claim 1, characterized in that: The invention comprises a linkage member (4) having a chair back linkage portion (4.1) and a chair seat linkage portion (4.2) arranged at intervals, wherein the chair back linkage portion (4.1) is hinged to the chair back and has a third axis (c) for the hinged movement of the chair back, and the chair seat linkage portion (4.2) is hinged to the chair seat and has a fourth axis (d) for the hinged movement of the chair seat; The third axis (c) has a first rotation trajectory around the first axis (a), and the fourth axis (d) has a second rotation trajectory around the second axis (b). When folding and unfolding, the first rotation trajectory and the second rotation trajectory have opposite rotation directions.
3. The folding assembly according to claim 1 or 2, characterized in that: In the unfolded state, a bearing structure corresponding to a sitting posture or a lying posture is formed between the chair back linkage member (2) and the chair seat linkage member (3).
4. The folding assembly according to claim 2, characterized in that: In the unfolded state, the first axis (a) and the second axis (b) are both located on the folding reference plane (e), and the third axis (c) and the fourth axis (d) are respectively located on both sides of the folding reference plane (e).
5. The folding assembly according to claim 1, characterized in that: The backrest sliding portion (2.1) has a third rotation track surrounding the first axis (a), and the two ends of the backrest limiting groove (1.3) constitute a limiting structure for the third rotation track; the seat sliding portion (3.1) has a fourth rotation track surrounding the second axis (b), and the two ends of the seat limiting groove (1.4) constitute a limiting structure for the fourth rotation track.
6. The folding assembly according to claim 1, characterized in that: It comprises two sets of folding parts arranged side by side, one on each side of the seat.
7. The folding assembly according to claim 1, characterized in that: The position-limiting hinge (1) is a rigid rod-shaped member, and the chair back hinge (1.1) and the chair seat hinge (1.2) are respectively located at two ends of the position-limiting hinge (1).
8. The folding assembly according to claim 7, characterized in that: The backrest limiting groove (1.3) is located on the backrest hinge portion (1.1); and the seat limiting groove (1.4) is located on the seat hinge portion (1.2).
9. The folding assembly according to claim 2, characterized in that: The linkage member (4) is a rigid rod-shaped member, and the chair back linkage portion (4.1) and the chair seat linkage portion (4.2) are respectively located at two ends of the linkage member (4).
10. A seat comprising a seat and a backrest, characterized in that: The connection structure between the seat and the seat back comprises a folding assembly according to any one of claims 1 to 9.