Foldable seat armrest

Abstract

The utility model relates to the technical field of seat armrests, in particular to a foldable seat armrest. Comprising an armrest frame, a connecting block is fixedly connected to the bottom of the inner top wall of the armrest frame, a connecting seat is hinged to the connecting block, an armrest plate is fixedly connected to one side of the connecting seat, fixing grooves are formed in the two sides of the end, close to the connecting seat, of the armrest plate, springs connected with the armrest plate are connected into the fixing grooves, and one end of each spring is connected with a limiting block matched with the armrest frame. The folding handrail is simple in structure, convenient and fast to operate and capable of stably maintaining double states, so that the space adaptability and the use reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair handrail technical field especially relates to a foldable chair handrail. BACKGROUND

[0002] As an important component of improving riding comfort and supporting function, chair handrails are widely used in fields such as office chairs, theater seats and vehicle seats. Traditional chair handrails usually adopt fixed structures, which provide stable support, but also have problems such as occupying a large space, hindering personnel passage or affecting the compact storage of the chair. To meet the needs of space flexibility in different use scenarios, chair handrails with folding function have gradually become the improvement direction of the industry. Such design needs to consider the stability of the unfolded state and the operation convenience of the folding process.

[0003] At present, some foldable handrail structures still have certain limitations in implementation: first, the folding mechanism design is complex, resulting in high production cost and increased failure rate; second, the operation fluency of handrail state switching (folding and unfolding) is insufficient, often requiring two hands to cooperate or improper force, affecting user experience; third, state locking relies on a single buckle or bolt fixing, which is prone to looseness after long-term use, resulting in insufficient support in the unfolded state or accidental opening in the folded state. SUMMARY

[0004] The utility model provides a folding handrail scheme which is simple in structure, convenient to operate and can stably maintain double states, so as to improve space adaptability and use reliability.

[0005] The utility model employs the technical scheme that a foldable chair handrail, including handrail frame, the inner top wall bottom of handrail frame is fixedly connected with connecting block, connecting block is hinged with connecting seat and one side of connecting seat is fixedly connected with handrail plate, both sides of handrail plate near one end of connecting seat are equipped with fixed slot, the spring that is connected with handrail plate is connected in fixed slot, one end of spring is connected with the limiting block that is matched with handrail frame.

[0006] As a further improvement of the utility model, the two sides of the handrail frame are provided with support upright plates, and the top of each support upright plate is fixedly connected with a connecting plate that is tightly connected with the handrail frame.

[0007] As a further improvement of the utility model, the bottom of each support upright plate is fixedly connected with a mounting bottom plate, and the end of the mounting bottom plate is provided with a plurality of mounting holes.

[0008] As a further improvement of the utility model, the top and bottom of the limiting block are fixedly connected with sliding blocks, and the connecting seat is provided with sliding grooves at the top and bottom of the fixed slot for the sliding of the sliding blocks.

[0009] As further improvement of the utility model, two groups of limiting through holes matched with the limiting blocks are arranged on the two side walls of the handrail frame, and the unfolded and folded states of the handrail plate are realized respectively.

[0010] As further improvement of the utility model, the connecting seat and the connecting block are hingedly connected through the rotating shaft, and the two groups of limiting through holes are symmetrically arranged about the rotating shaft.

[0011] The utility model discloses the beneficial effects: the utility model discloses the limiting block of spring drive and the limiting through hole symmetrically arranged on the handrail frame cooperate, and user only needs to press limiting block with single finger and remove the locking, can single hand smoothly switch the folding and unfolding state of handrail plate, and realizes the double position stable locking under the spring force action automatically, and the operation convenience and state maintenance reliability are improved obviously. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structure schematic diagram of a foldable seat handrail of the utility model (handrail plate unfolding state);

[0013] Figure 2 It is the overall structure schematic diagram of a foldable seat handrail of the utility model (handrail plate folding state)

[0014] Figure 3 It is the partial section of a foldable seat handrail of the utility model Figure 1 ;

[0015] Figure 4 It is the partial section of a foldable seat handrail of the utility model Figure 2 .

[0016] As shown in the figure: 1, handrail frame;2, connecting block;3, connecting seat;4, handrail plate;5, fixed groove;6, spring;7, limiting block;8, support vertical plate;9, connecting plate;10, installation bottom plate;11, rotating shaft;12, sliding block;13, sliding slot;14, limiting through hole;15, mounting hole. DETAILED DESCRIPTION

[0017] In the present specification, the orientation terms such as up, down, left, right, front, back, front face, back face, top, bottom, etc. mentioned or possibly mentioned are defined with respect to its structure, and they are relative concepts. Therefore, it is possible to change accordingly according to its different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0018] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] This utility model provides the following: Figures 1-4 The foldable armrest shown includes an armrest frame 1. A connecting block 2 is fixedly connected to the bottom of the inner top wall of the armrest frame 1. A connecting seat 3 is hinged to the connecting block 2, and an armrest plate 4 is fixedly connected to one side of the connecting seat 3. The armrest plate 4 has fixing grooves 5 on both sides near the connecting seat 3. A spring 6 connected to the armrest plate 4 is connected in the fixing groove 5. A limiting block 7 that cooperates with the armrest frame 1 is connected to one end of the spring 6.

[0021] like Figures 1-3 As shown, in this utility model, the armrest frame 1 is provided with support plates 8 on both sides. The top of the support plates 8 is fixedly connected to a connecting plate 9 that is fastened to the armrest frame 1. The bottom of the two support plates 8 is fixedly connected to a mounting base plate 10, and one end of the mounting base plate 10 is provided with multiple mounting holes 15. The foldable chair armrest can be conveniently installed on the corresponding chair through the mounting holes 15.

[0022] like Figure 4 As shown, in this utility model, the top and bottom of the limiting block 7 are fixedly connected to sliders 12, and the connecting seat 3 is provided with sliding grooves 13 at the top and bottom of the fixed groove 5 for sliders 12 to slide, providing a matching design between sliders 12 and sliding grooves 13, so that the limiting block slides more smoothly and stably in the fixed groove 5.

[0023] like Figures 2-4 As shown, in this utility model, the two side walls of the handrail frame 1 are provided with two sets of limiting through holes 14 that cooperate with the limiting block 7, respectively realizing the unfolded and folded states of the handrail plate 4. When it is necessary to switch the state of the handrail plate 4, the user only needs to press the limiting block 7 with one finger to make it slide into the fixing groove 5 against the elastic force of the spring 6. The limiting block 7 disengages from the current limiting through hole 14 and is unlocked.

[0024] like Figures 1-3 As shown, in this utility model, the connecting seat 3 and the connecting block 2 are hinged together by the rotating shaft 11 and the two sets of limiting through holes 14 are symmetrically arranged about the rotating shaft 11, so that the limiting block 7 can accurately cooperate with the limiting through hole 14 in both the unfolded and folded states of the handrail plate 4.

[0025] Working principle: when the handrail plate 4 is in the unfolded state, the limiting block 7 is inserted into the corresponding limiting hole 14 under the action of the spring 6, realizing stable locking of the unfolded state. At this time, the handrail plate 4 can provide stable support for the user. If you want to fold up the handrail plate 4, the user presses the limiting block 7 with a single finger, so that the limiting block 7 slides into the fixed groove 5 against the elastic force of the spring 6, until it is separated from the current limiting hole 14, thereby releasing the locking of the unfolded state. Subsequently, the user can easily rotate the handrail plate 4 around the rotating shaft 11 to the folding position. When the handrail plate 4 reaches the folding position, the spring 6 pushes the limiting block 7 to insert into another limiting hole 14, realizing stable locking of the folding state, avoiding accidental opening of the handrail plate 4 in the folding state.

[0026] Conversely, when the handrail plate 4 needs to be unfolded from the folded state, the limiting block 7 is also pressed with a single finger to separate it from the current limiting hole 14, releasing the locking of the folded state. Then rotate the handrail plate 4 to the unfolded position, and the spring 6 pushes the limiting block 7 to insert into the corresponding limiting hole 14, so that the handrail plate 4 is stably maintained in the unfolded state. The entire operation process only needs to press with a single finger and rotate with a single hand, and the operation is smooth and convenient. The cooperation of the spring 6 and the limiting hole 14 ensures the stability of the handrail plate 4 in the unfolded and folded states, effectively solves the problems existing in the traditional foldable handrail, and improves the user's experience and the reliability of the product.

[0027] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A foldable armrest for a seat comprising an armrest frame (1), characterized in that: The handrail frame (1) is internally provided with a connecting block (2) fixedly connected to the bottom of the top wall, the connecting block (2) is hingedly provided with a connecting seat (3), one side of the connecting seat (3) is fixedly connected with a handrail plate (4), both sides of one end of the handrail plate (4) close to the connecting seat (3) are provided with a fixed groove (5), the fixed groove (5) is connected with a spring (6) connected with the handrail plate (4), one end of the spring (6) is connected with a limiting block (7) matched with the handrail frame (1).

2. A foldable seat armrest according to claim 1, characterised in that: Both sides of the handrail frame (1) are provided with a supporting vertical plate (8), the top of the supporting vertical plate (8) is fixedly connected with a connecting plate (9) tightly connected with the handrail frame (1).

3. A foldable seat armrest according to claim 2, wherein: The bottom of the two supporting vertical plates (8) is fixedly connected with a mounting bottom plate (10), and one end of the mounting bottom plate (10) is provided with a plurality of mounting holes (15).

4. A foldable seat armrest according to claim 1, wherein: The top and bottom of the limiting block (7) are fixedly connected with a sliding block (12), the connecting seat (3) is provided with a sliding groove (13) for the sliding block (12) to slide at the top and bottom of the fixed groove (5).

5. A foldable seat armrest according to claim 1, wherein: Both sides of the handrail frame (1) are provided with two groups of limiting through holes (14) matched with the limiting block (7), which realize the unfolding and folding states of the handrail plate (4) respectively.

6. A foldable seat armrest according to claim 1, wherein: The connecting seat (3) and the connecting block (2) are hingedly connected through a rotating shaft (11), and the two groups of limiting through holes (14) are symmetrically arranged about the rotating shaft (11).

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