Chair adopting telescopic armrest design

Abstract

The utility model discloses a chair adopting the design of telescopic handrails, which comprises a chair and two telescopic handrails, the chair comprises a backrest, a seat plate, first chair legs and second chair legs, the first chair legs are respectively and fixedly connected with two sides of the bottom of the front end of the seat plate; the second chair legs are obliquely fixed to the two sides of the rear end of the seat plate in an arc shape, the parts, extending out of the seat plate, of the second chair legs form supporting arm sliding grooves, clamping protrusions are arranged at the ends of the outer side walls of the two supporting arm sliding grooves in a protruding mode, and hole channels in sliding connection with the corresponding clamping protrusions are formed in the telescopic armrests in the length direction of the telescopic armrests; a gear positioning block is fixedly arranged on the inner end face of the top of the supporting arm sliding groove, and an extending gear positioning groove and a retracting gear positioning groove which are connected with the gear positioning block in a matched and clamped mode are concavely formed in the top face of each telescopic handrail from back to front in a spaced mode. The utility model aims to meet the special requirements of people with difficulty in moving, can realize the extension or retraction of the telescopic handrail at any time according to the requirements, and has better convenience for the independent movement of old people or specific rehabilitation training patients.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and more specifically, to a chair with a telescopic armrest design. Background Technology

[0002] Traditional chairs are mostly divided into two types: armless and with fixed armrests. Both armless and fixed armrest designs present numerous inconveniences for people with mobility impairments. For these individuals, daily activities are already limited. When they need to sit down, armless chairs lack safety. If there are obstacles such as tables in front of a chair with fixed armrests, the inability to extend the armrests makes it difficult for them to sit down smoothly from the side. They often have to laboriously drag the chair away from the obstacle, and in many cases, they cannot complete this action on their own and must rely on others for assistance. This makes what should be a simple act of sitting difficult, significantly impacting the convenience and independence of daily life for people with mobility impairments. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a chair with a telescopic armrest design that is designed to meet the special needs of people with mobility impairments and can quickly extend or retract the telescopic armrests as needed.

[0004] To achieve the above objectives, this utility model provides a chair with telescopic armrests, including a chair and two telescopic armrests. The chair includes a backrest, a seat, a first leg, and a second leg. The seat is horizontally fixed to the bottom of the backrest. The first leg has two legs, which are respectively fixed to both sides of the bottom front end of the seat. The second leg has two legs, which are respectively fixed to both sides of the rear end of the seat in an arc shape. The portions of the second legs extending beyond the seat form support arm grooves on their outer side walls for sliding connection of the telescopic armrests. The outer side walls of the two support arm grooves are respectively provided with locking protrusions. The telescopic armrests extend along their length... Each telescopic handrail has a channel through which it is fitted onto its corresponding locking protrusion and slidably connected. A stop positioning block is fixedly mounted on the inner top surface of the support arm slide groove above the locking protrusion. Each telescopic handrail has an extension stop positioning groove and a retraction stop positioning groove recessed from back to front, which engage with the stop positioning blocks. When the telescopic handrail is retracted, the stop positioning block of the support arm slide groove engages with the retraction stop positioning groove of the telescopic handrail. When the telescopic handrail is extended, the stop positioning block of the support arm slide groove engages with the extension stop positioning groove of the telescopic handrail.

[0005] Preferably, the bottom surface of the card protrusion is recessed with a strip-shaped guide groove along its length direction, and the inner end surface of the channel is protruded with a guide protrusion that corresponds to the shape of the opening of the strip-shaped guide groove and can achieve sliding fit along its length direction.

[0006] Preferably, the telescopic armrest is inclined in an arc shape, and the curvature of the telescopic armrest is consistent with the curvature of the front end of the second chair leg.

[0007] Preferably, the connection between the backrest and the seat is provided with an arc-shaped transition.

[0008] Preferably, both the first and second chair legs have an L-shaped cross-section.

[0009] Preferably, both the chair and the telescopic armrests are made of plastic.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model has a simple structure and reasonable design. The chair adopts a retractable armrest design, which is designed to meet the special needs of people with mobility impairments. The retractable armrests can be quickly extended or retracted at any time according to the needs of use. For example, when there is an obstacle in front of the user, traditional chairs may cause inconvenience in getting in and out. The retractable armrest design of this utility model allows the user to smoothly enter the front of the chair from the side without moving the chair. By extending the retractable armrests for support, the user can sit down and stand up. Then, the retractable armrests can be retracted to leave the side of the chair. This provides better convenience for the independent movement of the elderly or patients undergoing rehabilitation training. Attached Figure Description

[0012] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the extended state of the telescopic armrests of a chair with a telescopic armrest design provided in an embodiment of this utility model;

[0014] Figure 2 This is an enlarged schematic diagram of the front end of the second leg of a chair with a telescopic armrest design provided in an embodiment of this utility model;

[0015] Figure 3 This is an enlarged schematic diagram of a partial explosion of a chair with a telescopic armrest design provided in an embodiment of this utility model;

[0016] Figure 4 This is a schematic diagram of the retracted state of the telescopic armrests of a chair with a telescopic armrest design provided in an embodiment of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Please refer to Figure 1 The present invention provides a chair with telescopic armrests, including a chair 1 and two telescopic armrests 2. The chair 1 includes a backrest 11, a seat 12, a first chair leg 13 and a second chair leg 14. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 4 As shown, the bottom end of the backrest 11 can be horizontally fixed with a seat plate 12. The first chair leg 13 has two legs and is fixedly connected to both sides of the bottom front end of the seat plate 12. The second chair leg 14 has two legs and is fixedly fixed to both sides of the rear end of the seat plate 12 in an arc shape. The part of the second chair leg 14 that extends out of the seat plate 12 forms a support arm groove 141 on its outer side wall for sliding connection of the telescopic armrest 2. The outer side wall ends of the two support arm grooves 141 are respectively provided with a locking protrusion 142. The telescopic armrest 2 is provided with a channel 21 along its length direction. The telescopic armrest 2 is sleeved on its corresponding locking protrusion 142 through the channel 21 and achieves sliding connection with the locking protrusion 142. The top inner end face of the support arm groove 141 is respectively fixed with a stop positioning block 143 located above the locking protrusion 142. The top surface of each telescopic armrest 2 is respectively recessed from back to front with an extension stop positioning groove 22 and a retraction stop positioning groove 23 that cooperate with the stop positioning block 143.

[0020] The two first chair legs 13 are slightly tilted outwards to provide vertical support. Together with the two tilted second chair legs 14 at the rear, they ensure the stability of the chair's rear load-bearing capacity, effectively distribute the chair's center of gravity, make the overall structure more stable, reduce the risk of tipping over, and enhance stability.

[0021] In practice, when the telescopic armrest 2 is in the retracted state, the positioning block 143 of the support arm slide 141 engages with the retracted positioning groove 23 of the telescopic armrest 2. At this time, both telescopic armrests 2 are almost at the bottom of the support arm slide 141 and do not extend beyond the front edge of the seat plate 12. When the telescopic armrest 2 is in the extended state, the positioning block 143 of the support arm slide 141 engages with the extended positioning groove 22 of the telescopic armrest 2. At this time, the extension of both telescopic armrests 2 can extend beyond the front edge of the seat plate 12. For people with mobility impairments, this provides good support for users. They can easily grasp the arm with their arms hanging down naturally, providing a more effective leverage point to help users smoothly complete the sitting and standing actions, enhancing the convenience of users' independent movement.

[0022] In this embodiment, the bottom surface of the card protrusion 142 may be recessed with a strip-shaped guide groove 144 along its length direction, and the inner end surface of the channel 21 is protruded with a guide protrusion 24 that corresponds to the opening shape of the strip-shaped guide groove 144 and can achieve sliding fit along its length direction.

[0023] Furthermore, the strip guide groove 144 and the guide protrusion 24 provide additional guiding functions, so that the telescopic handrail 2 can only extend and retract within the limited range, thereby achieving stability under force and preventing the telescopic handrail 2 from deviating, shaking or falling off when sliding, further improving the smoothness of the sliding of the telescopic handrail 2, making it easier and less strenuous for users to operate the telescopic handrail 2.

[0024] Specifically, the cross-sections of the first chair leg 13 and the second chair leg 14 can both be arranged in an L-shape.

[0025] Furthermore, the telescopic armrest 2 can be set in an arc-shaped incline, and the curvature of the telescopic armrest 2 is consistent with the curvature of the front end of the second chair leg 14.

[0026] The portion of the second chair leg 14 extending out of the seat plate 12 directly forms a sliding groove structure for the telescopic armrest 2 to slide and connect, which optimizes space utilization, avoids the use of additional protruding parts, and ensures a simple appearance for the chair.

[0027] Preferably, the connection between the backrest 11 and the seat 12 can be designed with a curved transition. This conforms to ergonomic design and improves ease of use and comfort.

[0028] Preferably, both the chair 1 and the telescopic armrests 2 can be made of plastic. Polypropylene or polyethylene is preferred, as plastic chairs are widely used in homes, outdoors, and public places due to their lightweight, durability, low cost, and ease of cleaning.

[0029] In summary, the chair of this utility model features a retractable armrest design, designed to meet the special needs of people with mobility impairments. The retractable armrests can be quickly extended or retracted as needed. For example, when there are obstacles in front of the user, traditional chairs may make it difficult to get in and out. The retractable armrest design of this utility model allows the user to smoothly enter the front of the chair from the side without moving the chair. By extending the retractable armrests for support, the user can sit down and stand up, and then retract the retractable armrests to leave from the side of the chair. This provides greater convenience for the independent movement of the elderly or patients undergoing rehabilitation training.

[0030] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A chair with telescopic armrests, characterized in that: The system includes a chair (1) and two telescopic armrests (2). The chair (1) includes a backrest (11), a seat (12), a first chair leg (13), and a second chair leg (14). The bottom end of the backrest (11) is horizontally fixed to the seat (12). The first chair leg (13) has two legs and is fixedly connected to both sides of the bottom front end of the seat (12). The second chair leg (14) has two legs and is fixedly fixed to both sides of the rear end of the seat (12) in an arc shape. The part of the second chair leg (14) extending out of the seat (12) forms a support arm groove (141) on its outer side wall for sliding connection of the telescopic armrests (2). The outer side wall ends of the two support arm grooves (141) are respectively provided with a locking protrusion (142). The telescopic armrests (2) are respectively provided with a channel (21) along their length direction. The telescopic armrests (2) are all connected to the support arm grooves (141). The passageway (21) is fitted onto its corresponding locking protrusion (142) and slides with the locking protrusion (142). The top inner end face of the support arm slide groove (141) is fixedly provided with a stop positioning block (143) located above the locking protrusion (142). The top surface of each telescopic handrail (2) is recessed from back to front with an extension stop positioning groove (22) and a retraction stop positioning groove (23) that cooperate with and engage with the stop positioning block (143). When the telescopic handrail (2) is in the retraction state, the stop positioning block (143) of the support arm slide groove (141) engages with the retraction stop positioning groove (23) of the telescopic handrail (2). When the telescopic handrail (2) is in the extension state, the stop positioning block (143) of the support arm slide groove (141) engages with the extension stop positioning groove (22) of the telescopic handrail (2).

2. A chair with telescopic armrests as described in claim 1, characterized in that: The bottom surface of the card protrusion (142) is recessed along its length direction with a strip-shaped guide groove (144), and the inner end surface of the channel (21) is protruded along its length direction with a guide protrusion (24) that corresponds to the opening shape of the strip-shaped guide groove (144) and can achieve sliding fit.

3. A chair with telescopic armrests as described in claim 1, characterized in that: The telescopic armrest (2) is inclined in an arc shape, and the curvature of the telescopic armrest (2) is consistent with the curvature of the front end of the second chair leg (14).

4. A chair with telescopic armrests as described in claim 1, characterized in that: The connection between the backrest (11) and the seat (12) is set in an arc-shaped transition.

5. A chair with telescopic armrests as described in claim 1, characterized in that: The cross-sections of the first chair leg (13) and the second chair leg (14) are both L-shaped.

6. A chair with telescopic armrests as described in claim 1, characterized in that: Both the chair (1) and the telescopic armrests (2) are made of plastic.

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