Folding chair with folding backrest

Abstract

This utility model discloses a folding chair with a foldable backrest, including a support assembly that can be unfolded and folded to allow the chair to switch between an unfolded and folded state; a lower backrest tube disposed on one side of the support assembly; a connector sleeved on the lower backrest tube and connected to the support assembly, wherein when the support assembly is folded, the connector moves upward along the lower backrest tube to a designated position, and when the support assembly is unfolded, the connector moves downward along the lower backrest tube to a reset position; and a folding assembly including an upper backrest tube hinged to the lower backrest tube on one side, a connecting joint sleeved on one end of the upper backrest tube, and a backrest connecting tube rotatably connected to the connector on one end, with one end of the backrest connecting tube hinged to the connecting joint. This utility model uses a folding assembly as the backrest, allowing the upper backrest tube to be folded to the side of the lower backrest tube when stored, shortening the backrest length after folding, reducing the overall space occupied, and facilitating transportation, carrying when going out, and storage at home.

Description

Technical Field

[0001] This utility model relates to the field of folding chair technology, and in particular to a folding chair with a foldable backrest. Background Technology

[0002] Folding chairs are widely used in outdoor camping and leisure, conference rooms that require flexible seating arrangements, and small apartments due to their small footprint and portability. Currently, there are a large number of folding chairs on the market, but most of them with long backrests cannot be folded back, so the backrests still occupy a lot of space after being folded up, making them inconvenient to carry and store.

[0003] For the reasons mentioned above, it is necessary to improve the existing technology. Utility Model Content

[0004] I. Technical problems to be solved This utility model addresses the aforementioned deficiencies in the existing technology by proposing a folding chair with a foldable backrest to solve the problems mentioned in the background art.

[0005] II. Technical Solution To solve the above-mentioned technical problems, this utility model provides a folding chair with a foldable backrest, including a support assembly, which can be unfolded and folded so that the folding chair can switch between an unfolded state and a folded state. A lower backrest tube, wherein the lower backrest tube is disposed on one side of the support assembly; A connector is sleeved on the lower backrest tube and connected to the support assembly. When the support assembly is folded, the connector moves upward along the lower backrest tube to a designated position. When the support assembly is unfolded, the connector moves downward along the lower backrest tube to a reset position. It also includes a folding assembly, which includes an upper backrest tube hinged on one side to the lower backrest tube, a connecting joint sleeved on one end of the upper backrest tube, and a backrest connecting tube rotatably connected to the connecting member at one end, with one end of the backrest connecting tube hinged to the connecting joint.

[0006] In the above technical solution, the support assembly includes a cross tube group and a hinge seat, the hinge seat being used to hinge the sides of adjacent cross tube groups together.

[0007] In the above technical solution, the cross tube group includes a first support tube and a second support tube, which are arranged crosswise and connected by a connecting pin at the intersection.

[0008] The above technical solution also includes a seat surface, which is disposed on the support assembly, and one end extends along the direction of the upper backrest tube to form a backrest back, which is disposed on one side of the upper backrest tube.

[0009] The above technical solution also includes an armrest assembly, which includes an armrest sleeve fitted on the upper tube of the backrest, an armrest support tube with its bottom end hinged to the first support tube, an armrest with its two ends respectively hinged to the armrest sleeve and the armrest support tube, and a support tube sleeve hinged to the second support tube, with one end of the support tube sleeve fitted on the armrest support tube.

[0010] In the above technical solution, one end of the backrest connecting tube is hinged to the first support tube connected to the connecting member, so that it is indirectly rotatably connected to the connecting member.

[0011] In the above technical solution, the bottom end of the backrest lower tube is hinged to one side of the bottom of the first support tube.

[0012] III. Beneficial Effects Compared with the prior art, the present invention has the following advantages: The present invention uses a folding component as the backrest, which allows the upper tube of the backrest to be folded to the side of the lower tube when stored. After folding, the length of the backrest is shortened, the overall space occupied is small, and it is convenient for transportation, carrying when going out and storing at home. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a partial structural schematic diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0016] Figure 4 This is a schematic diagram of Embodiment 2 of the present invention.

[0017] Figure 5 This is a schematic diagram of the semi-folded shape in Embodiment 2 of this utility model.

[0018] Figure 6 This is a schematic diagram of the folding of Embodiment 2 of this utility model.

[0019] Figure 7 This is a partial structural schematic diagram of Embodiment 2 of the present invention.

[0020] Figure 8 for Figure 2 A partial enlarged view of the structure in section A.

[0021] Figure 9 for Figure 2 The structural schematic diagram of part B in the middle section.

[0022] In the diagram: 1 is the support assembly, 10 is the cross tube assembly, 11 is the hinge seat, 100 is the first support tube, 101 is the second support tube, 102 is the connecting pin, 2 is the lower backrest tube, 3 is the connector, 4 is the folding assembly, 40 is the upper backrest tube, 41 is the connecting joint, 42 is the backrest connecting tube, 5 is the seat surface, 50 is the backrest back, 6 is the armrest assembly, 60 is the armrest sliding sleeve, 61 is the armrest support tube, 62 is the armrest, and 63 is the support tube sliding sleeve. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0024] Please see Figure 1-9 The present invention provides a folding chair with a foldable backrest, including a support assembly 1, wherein the support assembly 1 can be unfolded and folded so that the folding chair can switch between an unfolded state and a folded state. Backrest lower tube 2, the backrest lower tube 2 is disposed on one side of the support assembly 1; Connector 3 is sleeved on the lower backrest tube 2 and connected to the support assembly 1. When the support assembly 1 is folded, the connector 3 moves upward along the lower backrest tube 2 to a designated position. When the support assembly 1 is unfolded, the connector 3 moves downward along the lower backrest tube 2 to a reset position. It also includes a folding assembly 4, which includes a backrest upper tube 40 hinged on one side to the lower backrest tube 2, a connecting joint 41 sleeved on one end of the upper backrest tube 40, and a backrest connecting tube 42 rotatably connected to the connector 3 at one end. One end of the backrest connecting tube 42 is hinged to the connecting joint 41.

[0025] In the above structure, when the folding chair is to be converted to a folding state, the support assembly folds and converges towards the center, and the connector moves upward along the direction of the lower backrest tube, thereby driving the backrest connecting tube, which is rotatably connected to the connector, to move upward. The other end of the backrest connecting tube is hinged to the connecting joint, so that the connecting joint moves upward synchronously. Since one side of the upper backrest tube is hinged to the lower backrest tube, the connecting joint drives the end of the upper backrest tube that is fitted with the connecting joint to move upward, while the other end of the upper backrest tube moves downward, so that the upper backrest tube folds to the side of the lower backrest tube, achieving the effect of backrest folding. This makes the folding chair take up less space when folded and folded, making it convenient for home storage, transportation, and carrying when going out.

[0026] Specifically, the support assembly 1 includes a cross tube group 10 and a hinge seat 11. The hinge seat 11 is used to hinge the sides of adjacent cross tube groups 10 to each other. The cross tube groups are set into four groups and distributed in a square. The cross tube groups are connected to each other through the hinge seat. The overall distribution makes the folding chair more beautiful and achieves a visually harmonious effect.

[0027] Specifically, the cross tube assembly 10 includes a first support tube 100 and a second support tube 101, which are arranged crosswise and connected by a connecting pin 102 at the intersection, as shown in the appendix to the specification. Figure 1 As shown in the diagram, the bottom end of the first support tube is hinged to the hinge seat, which causes the hinge seat to shift when the folding chair is folded up, thereby driving the first support tube to shift synchronously. The first and second support tubes, which are arranged in a cross configuration, are connected by a connecting pin, so that the vertical pressure exerted on the cross tube assembly by a person or heavy object placed on the folding chair is converted into lateral tension, which improves the single-point load-bearing capacity of the folding chair. At the same time, the cross design can counteract lateral swaying and increase the stability of the folding chair.

[0028] Specifically, it also includes a seat surface 5, which is disposed on the support assembly 1, and one end extends along the direction of the upper backrest tube 40 to form a backrest 50. The backrest 50 is disposed on one side of the upper backrest tube 40. The backrest allows the user to lie comfortably on the backrest when sitting in the folding chair, thereby improving the comfort of the folding chair.

[0029] Specifically, it also includes an armrest assembly 6, which includes an armrest sliding sleeve 60 sleeved on the upper backrest tube 40, an armrest support tube 61 hinged at its bottom end to the first support tube 100, an armrest 62 hinged at both ends to the armrest sliding sleeve 60 and the armrest support tube 61 respectively, and a support tube sliding sleeve 63 hinged to the second support tube 101. One end of the support tube sliding sleeve 63 is sleeved on the armrest support tube 61. When the folding chair is to be converted to a folding state, the armrest sliding sleeve slides from its original position to the bottom end of the upper backrest tube as the upper backrest tube moves. The armrest is hinged at one end to the armrest sliding sleeve and tilts downward, while the other end tilts upward. The armrest support tube moves along the folding direction as the first support tube is folded, and at the same time, an upward force is applied to the armrest hinged at one end. The armrest and the armrest support tube are folded at the hinge position. The whole uses an armrest assembly that can be folded along with the folding chair, reducing the space occupied and making it easy to store.

[0030] Specifically, one end of the backrest connecting tube 42 is hinged to the first support tube 100 connected to the connecting member 3, so that it is indirectly rotatably connected to the connecting member 3, as shown in the appendix to the specification. Figure 1The right-side backrest connecting tube is directly hinged to the connector, forming a rotatable connection between the backrest connecting tube and the connector. This allows the backrest connecting tube to move synchronously when the connector moves on the lower backrest tube. (Instruction manual attached) Figure 1 The left backrest connecting tube is hinged to the first support tube, so that when the first support tube is folded up and thus displaced, it will simultaneously drive the backrest connecting tube to move.

[0031] Specifically, the bottom end of the lower backrest tube 2 is hinged to one side of the bottom of the first support tube 100, as shown in the appendix to the instruction manual. Figure 2 The lower backrest tube shown in the image is hinged to the bottom of the first support tube, so that the first support tube will drive the lower backrest tube to move synchronously during the movement of the image.

[0032] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A folding chair with a foldable backrest, including: Support assembly (1), the support assembly (1) being able to unfold and fold so that the folding chair can switch between an unfolded state and a folded state; The backrest lower tube (2) is disposed on one side of the support assembly (1); Connector (3), the connector (3) is sleeved on the lower backrest tube (2) and connected to the support assembly (1). When the support assembly (1) is folded, the connector (3) moves upward along the lower backrest tube (2) to a designated position. When the support assembly (1) is unfolded, the connector (3) moves downward along the lower backrest tube (2) to a reset position. Its characteristic is that it further includes: Folding assembly (4), the folding assembly (4) includes a backrest upper tube (40) hinged on one side to the backrest lower tube (2), a connecting joint (41) sleeved on one end of the backrest upper tube (40) and a backrest connecting tube (42) rotatably connected on one end to the connector (3), one end of the backrest connecting tube (42) being hinged to the connecting joint (41).

2. The folding chair with a foldable backrest as described in claim 1, characterized in that: The support assembly (1) includes a cross tube group (10) and a hinge seat (11), the hinge seat (11) being used to hinge the sides of adjacent cross tube groups (10) to each other.

3. The folding chair with a foldable backrest as described in claim 2, characterized in that: The cross tube assembly (10) includes a first support tube (100) and a second support tube (101), which are arranged crosswise and connected by a connecting pin (102) at the intersection.

4. The folding chair with a foldable backrest as described in claim 1, characterized in that: It also includes a seat surface (5), which is disposed on the support assembly (1) and one end extends along the direction of the upper backrest tube (40) to form a backrest back surface (50), which is disposed on one side of the upper backrest tube (40).

5. The folding chair with a foldable backrest as described in claim 3, characterized in that: It also includes an armrest assembly (6), which includes an armrest sleeve (60) fitted on the upper tube (40) of the backrest, an armrest support tube (61) with its bottom end hinged to the first support tube (100), an armrest (62) with its two ends respectively hinged to the armrest sleeve (60) and the armrest support tube (61), and a support tube sleeve (63) hinged to the second support tube (101), with one end of the support tube sleeve (63) fitted on the armrest support tube (61).

6. The folding chair with a foldable backrest as described in claim 3, characterized in that: One end of the backrest connecting tube (42) is hinged to the first support tube (100) connected to the connector (3), so that it is indirectly rotatably connected to the connector (3).

7. The folding chair with a foldable backrest as described in claim 3, characterized in that: The bottom end of the lower backrest tube (2) is hinged to one side of the bottom of the first support tube (100).

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