A height-adjustable telescopic chair with a backrest

Abstract

This utility model proposes a height-adjustable telescopic chair with a backrest, including a seat and a base. A telescopic component is provided between the seat and the base. Two metal support rods are detachably connected to the seat, extending upwards from the seat. The upper ends of the two support rods are detachably connected to the backrest. This utility model designs mounting holes on the edge of the seat, inserts the metal support rods into the mounting holes, and then installs the backrest on the metal support rods. This not only improves the strength of the backrest but also meets the user's comfort requirements. Furthermore, the backrest and seat cushion cover are integrally molded, effectively improving the overall stability and aesthetics, while preventing loosening between the backrest and the seat. This makes the backrest more secure and reliable during use and facilitates disassembly and storage later.

Description

Technical Field

[0001] This utility model relates to the field of telescopic chair / stool technology, and in particular to a height-adjustable telescopic chair with a backrest. Background Technology

[0002] Existing telescopic chairs / stools typically consist of multiple relatively extendable support components. These components are connected by methods such as splicing, folding, or rotating, allowing the stool to unfold into a stable seat when in use and retract into a smaller volume when not in use, thus achieving a foldable storage effect. Due to their compact structure and portability, these telescopic chairs are widely used in outdoor leisure, travel, and temporary seating scenarios.

[0003] For example, the inventor's patent application dated July 11, 2023, entitled "A Multifunctional Telescopic Stool," solved the problems of radial misalignment between the load-bearing rings and abnormal noise generated when the telescopic chair is retracted. However, to further meet the multifunctional needs of telescopic chairs and provide support when needed, existing technologies typically add a backrest mechanism to the seat. These backrest mechanisms often use plastic parts as support rods or form a rotatable connection between plastic parts and the seat, allowing the backrest to be rotated upright for support during use. However, these structures suffer from insufficient strength, poor comfort, and difficulty in easy disassembly, making it difficult to meet the actual needs of users outdoors or during extended use. Utility Model Content

[0004] This utility model proposes a height-adjustable telescopic chair with a backrest to solve the problems mentioned in the background art, such as insufficient strength, poor comfort, and inconvenience in disassembling the backrest structure of existing telescopic chairs.

[0005] The technical solution of this utility model is implemented as follows: A height-adjustable telescopic chair with a backrest includes a seat and a base. A telescopic assembly is provided between the seat and the base. Two metal support rods are detachably connected to the seat, extending upwards from the seat. The upper ends of the two support rods are detachably connected to a backrest.

[0006] Preferably, the seat is a shell structure with an open lower end, and the telescopic component includes an upper fixing ring fixed to the inner cavity of the seat, a lower fixing ring fixed to the base, and a plurality of load-bearing rings arranged concentrically between the upper fixing ring and the lower fixing ring, with their outer contours increasing or decreasing in size from top to bottom. Adjacent rings are connected by a locking component.

[0007] Preferably, the locking component includes an L-shaped groove formed in the circumferential direction of the lower fixing ring and the load-bearing ring, and the upper fixing ring and the load-bearing ring are provided with locking hooks that slide in the groove in the circumferential direction.

[0008] Preferably, a plurality of springs are connected between the upper and lower fixing rings. When the telescopic chair is extended, the springs apply elastic force and cooperate with the locking assembly to keep the entire telescopic assembly stable.

[0009] Preferably, the backrest side is provided with a connecting sleeve, which is detachably connected to the support rod.

[0010] Preferably, mounting holes are provided on one side of the seat surface near both ends, and the lower end of the support rod is inserted into the mounting holes; The upper end of the support rod is inserted into the inner cavity of the connecting sleeve; The support rod is equipped with locking components at both the upper and lower ends, which are configured to keep the upper and lower ends of the support rod locked to the connecting sleeve and the base respectively.

[0011] Preferably, the locking element is a V-shaped spring, with round holes provided at the upper and lower end side walls of the support rod, the side wall of the connecting sleeve, and the side wall of the mounting hole. The spring clip of the V-shaped spring can pass through the round holes to achieve locking.

[0012] Preferably, it also includes a seat cushion cover placed on the surface of the seat body, wherein the seat cushion cover is provided with a soft pad inside.

[0013] Preferably, the seat cushion cover and the backrest are both made of fabric and are integrally connected.

[0014] Preferably, the seat body is provided with a handle on the outside.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are as follows: This invention features mounting holes designed on the edge of the seat, into which metal support rods are inserted. The backrest is then mounted on the metal support rods, which not only improves the strength of the backrest but also meets the user's comfort requirements. Furthermore, the backrest and seat cover are integrally molded, effectively improving the overall stability and aesthetics. This also prevents the backrest from becoming loose from the seat, making the backrest more secure and reliable during use, and facilitating disassembly and storage later. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1The three-dimensional shape of the telescopic chair in its extended state according to this utility model Figure 1 ; Figure 2 The three-dimensional shape of the telescopic chair in its extended state according to this utility model Figure 2 ; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a perspective view of the base of this utility model; Figure 5 This is a three-dimensional view of the backrest, seat cushion cover, and soft cushion of this utility model. Figure 6 This is a perspective view of the connecting sleeve of this utility model; Figure 7 This is a partial perspective view showing the connection between adjacent load-bearing rings of this utility model; Figure 8 This is a perspective view of the telescopic chair of this utility model in its semi-extended state; Figure 9 This is a perspective view of the telescopic chair of this utility model in its folded state.

[0018] in: 1. Seat body; 101. Mounting hole; 2. Seat cushion cover; 3. Backrest; 4. Connecting sleeve; 5. Support rod; 6. Soft cushion; 7. Handle; 8. Load-bearing ring; 801. Groove; 8011. Recess; 802. Locking hook; 9. Base; 10. V-shaped spring; 11. Lower fixing ring; 12. Upper fixing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-9 As shown, a height-adjustable telescopic chair with a backrest includes a seat body 1 and a base 9. A telescopic component is provided between the seat body 1 and the base 9. Specifically, the seat body 1 is a shell structure with an open lower end. The telescopic component is mainly used to increase or decrease the overall height of the telescopic chair. When lowered to its minimum size, the entire telescopic component can be stored and hidden in the inner cavity of the seat body 1.

[0021] Specifically, the telescopic assembly includes an upper fixing ring 12 fixed to the inner cavity of the seat 1, a lower fixing ring 11 fixed to the base 9, and multiple load-bearing rings 8 concentrically arranged between the upper fixing ring 12 and the lower fixing ring 11, with their outer contours increasing or decreasing from top to bottom. Adjacent rings are connected by a locking assembly. Several springs are connected between the upper fixing ring 12 and the lower fixing ring 11. The upper end of the spring is connected to the upper fixing ring 12 or the seat 1, and the lower end of the spring is connected to the lower fixing ring 11 or the base 9. The springs are mainly used to keep the upper fixing ring 12 and the lower fixing ring 11 in a taut working state when the telescopic chair is extended, that is, to keep the telescopic chair stable when it is extended. When the telescopic chair is extended, the springs apply elastic force and cooperate with the locking assembly to keep the entire telescopic assembly stable.

[0022] Specifically, the locking assembly includes an L-shaped groove 801 formed in the circumferential direction of the lower fixing ring 11 and the load-bearing ring 8. The upper fixing ring 12 and the load-bearing ring 8 are provided with locking hooks 802 that slide in the groove 801. More specifically, the horizontal end of the groove 801 has a downwardly recessed portion 8011. During operation, the locking hook 802 is always within the groove 801. When the telescopic chair is extended and the base 9 is rotated relative to the seat body 1, the locking hook 802 can enter the groove. Within the horizontal groove of slot 801, the spring's elastic force allows the locking hook 802 to be positioned within the recess 8011, locking the hook 802 and ensuring the telescopic chair remains stable in its extended state. When the base 9 rotates in the opposite direction and extends axially, the locking hook 802 disengages from the recess 8011 and returns to the vertical groove, allowing the upper fixing ring 12, the load-bearing ring 8, and the lower fixing ring 11 to be stacked and stored. In the stored state, the base 9 and the seat 1 can be locked together to prevent them from separating. The specific structure and principle of the telescopic components of the aforementioned telescopic chair are conventional designs in existing technology and will not be elaborated further here.

[0023] The structure of the telescopic chair in different telescopic states is as follows: Figure 1-2 As shown in Figures 8-9, specifically, as Figure 1-2 The diagram shown is a structural diagram of the telescopic chair in its maximum extended state. Figure 8 The diagram shown is a structural diagram of the telescopic chair in its telescopic state. Figure 9 The diagram shown is a structural diagram of the telescopic chair in its folded and stowed state.

[0024] Two metal support rods 5 are detachably connected to the seat body 1. The support rods 5 can be made of stainless steel, aluminum alloy, or other metal or alloy materials. The two support rods 5 extend upwards from the seat body 1, and a connecting sleeve 4 is detachably connected to the upper end of the two support rods 5. A backrest 3 is connected to the side of the connecting sleeve 4. The connecting sleeve 4 is sewn to the backrest 3 and serves as an intermediate component connecting the backrest 3 and the support rods 5, avoiding the problem of easy damage caused by direct connection between the backrest 3 and the support rods 5.

[0025] Specifically, mounting holes 101 are provided on one side of the surface of the base 1 near both ends, and the lower end of the support rod 5 is inserted into the mounting hole 101; the upper end of the support rod 5 is inserted into the inner cavity of the connecting sleeve 4; both the upper and lower ends of the support rod 5 are inserted into each other, which has the advantage of convenient assembly and disassembly.

[0026] The support rod 5 is equipped with locking elements at both its upper and lower ends. These locking elements are designed to keep the upper and lower ends of the support rod 5 locked to the connecting sleeve 4 and the base 1, respectively. Specifically, the locking elements are V-shaped spring pieces 10. Circular holes are provided at the upper and lower end sidewalls of the support rod 5, the sidewall of the connecting sleeve 4, and the sidewall of the mounting hole 101. The spring clip of the V-shaped spring piece 10 can pass through the circular holes to achieve locking. That is, the V-shaped spring piece 10 is installed inside the support rod 5, and its spring clip passes through the circular holes in the sidewall of the support rod 5. When the support rod 5 is inserted into the designated position of the mounting hole 101, the spring clip can also extend and insert into the circular hole in the sidewall of the mounting hole 101, thus preventing the support rod 5 from easily detaching from the mounting hole 101. Similarly, when the connecting sleeve 4 is connected to the support rod 5, the connecting sleeve 4 is fitted onto the upper end of the support rod 5, and the spring clip of the V-shaped spring piece 10 can be inserted into the circular holes in the sidewalls of both the support rod 5 and the connecting sleeve 4 to achieve locking.

[0027] Specifically, it also includes a seat cover 2 placed on the surface of the seat body 1, and the seat cover 2 has a soft pad 6 inside, which is made of sponge material, to further improve the user's comfort when sitting.

[0028] Specifically, the seat cushion cover 2 and the backrest 3 are both made of fabric and are integrally connected. By designing both of them to be made of fabric, the backrest 3 can be stably supported by the metal support rod 5, while the fabric backrest 3 can improve the user's comfort when leaning against it.

[0029] Specifically, the outer surface of the seat 1 is provided with a handle 7, and the handle 7 can be made of metal or leather, such as... Figure 1 As shown, the metal or leather material is arranged around the lower edge of the outer side of the seat 1 because the bottom of the seat 1 is an open structure. This arrangement can strengthen the structural strength of the seat 1, and the handle 7 is formed on the side of the seat 1, which also serves the function of carrying.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A height adjustable, telescoping chair with a backrest, characterized in that, It includes a seat (1) and a base (9), with a telescopic assembly between the seat (1) and the base (9). Two metal support rods (5) are detachably connected to the seat (1), and the two support rods (5) extend upwards from the seat (1). A backrest (3) is detachably connected to the upper end of the two support rods (5).

2. The height adjustable recliner chair with backrest of claim 1, wherein, The seat (1) is a shell structure with an open lower end. The telescopic assembly includes an upper fixing ring (12) fixed to the inner cavity of the seat (1), a lower fixing ring (11) fixed to the base (9), and multiple load-bearing rings (8) arranged concentrically between the upper fixing ring (12) and the lower fixing ring (11) with their outer contours changing in size from top to bottom. Adjacent rings are connected by a locking assembly.

3. The height adjustable recliner chair with a backrest of claim 2, characterized in that, The locking assembly includes an L-shaped groove (801) formed in the circumferential direction of the lower fixing ring (11) and the load-bearing ring (8), and the upper fixing ring (12) and the load-bearing ring (8) are provided with locking hooks (802) that slide in the groove (801) in the circumferential direction.

4. The height adjustable recliner chair with a backrest of claim 3, wherein, Several springs are connected between the upper fixing ring (12) and the lower fixing ring (11). When the telescopic chair is extended, the springs apply elastic force and cooperate with the locking assembly to keep the entire telescopic assembly stable.

5. The height adjustable recliner chair with a backrest of claim 1, wherein, The backrest (3) has a connecting sleeve (4) on its side, and the connecting sleeve (4) is detachably connected to the support rod (5).

6. The height adjustable recliner chair with backrest of claim 4, wherein, The base (1) has mounting holes (101) on one side near both ends, and the lower end of the support rod (5) is inserted into the mounting holes (101); The upper end of the support rod (5) is inserted into the inner cavity of the connecting sleeve (4); The upper and lower ends of the support rod (5) are provided with locking components, which are configured to keep the upper and lower ends of the support rod (5) locked to the connecting sleeve (4) and the seat (1) respectively.

7. The height adjustable recliner chair of claim 6, wherein, The locking element is a V-shaped spring (10). Circular holes are provided at the upper and lower end side walls of the support rod (5), the side wall of the connecting sleeve (4), and the side wall of the mounting hole (101). The spring buckle of the V-shaped spring (10) can pass through the circular holes to achieve locking.

8. The height adjustable recliner chair with a backrest of claim 1, wherein, It also includes a seat cover (2) placed on the surface of the seat body (1), and the inside of the seat cover (2) is provided with a soft pad (6).

9. The height adjustable recliner chair of claim 8, wherein, The seat cover (2) and the backrest (3) are both made of fabric and are connected as one piece.

10. The height adjustable recliner chair with a backrest of claim 1, wherein, The seat (1) is provided with a handle (7) on its exterior.

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