A type of handrail

Abstract

This utility model discloses an armrest, including an armrest body. One side of the armrest body has an arc-shaped sliding groove, within which a sliding plate that can slide along the groove is installed. A rotating plate is hinged to the other side of the armrest body. A pull rope is connected to the first end of the rotating plate, and the pull rope is connected to a rotating handle hinged to the armrest body. Teeth are provided at the bottom of the second end of the rotating plate and the top of the sliding plate, and the rotating plate and the sliding plate engage with the teeth. An arc-shaped limiting groove is formed on the armrest body, within which a limiting slide rod is inserted. The limiting slide rod can slide along the limiting groove. The first end of the limiting slide rod is fixedly connected to the sliding plate, and a return spring is installed at the second end of the limiting slide rod. The other end of the return spring is installed on the armrest body near the first end of the rotating plate. This utility model allows for the opening or closing of the teeth between the rotating plate and the sliding plate by controlling the rotating handle, thereby achieving angle adjustment and locking of the chair back.

Description

Technical Field

[0001] This utility model relates to the technical field of armchair furniture, specifically to an armrest. Background Technology

[0002] Office chairs, dining chairs, gaming chairs, sofas, and other armchairs are all equipped with armrests to improve user comfort and provide better hand support.

[0003] Armchairs and similar furniture are designed to accommodate users of different heights and usage habits, with adjustable backrests and sofa backrests.

[0004] Most existing armrests are only for supporting the hands, offering limited functionality. They also cannot be used to adjust the backrest's tilt angle, making them inconvenient to use. Utility Model Content

[0005] In order to overcome at least one of the technical problems existing in the prior art, this utility model provides an armrest that, by controlling the rotating handle, can realize the release or engagement of the locking teeth between the rotating plate and the sliding plate, thereby realizing the angle adjustment and locking of the chair back.

[0006] A handrail includes a handrail body, one side of which is provided with an arc-shaped sliding groove, and a sliding plate that can slide along the sliding groove is installed in the sliding groove.

[0007] A rotating plate is hinged to the other side of the handrail body. A pull rope is connected to the first end of the rotating plate, and the pull rope is connected to a rotating handle hinged to the handrail body.

[0008] The bottom of the second end of the rotating plate and the top of the sliding plate are both provided with locking teeth, and the rotating plate and the sliding plate are engaged by the locking teeth;

[0009] An arc-shaped limiting groove is provided on the handrail body, and a limiting slide rod is inserted into the limiting groove. The limiting slide rod can slide along the limiting groove. The first end of the limiting slide rod is connected and fixed to the sliding plate, and a return spring is installed at the second end of the limiting slide rod. The other end of the return spring is installed on the handrail body near the first end of the rotating plate.

[0010] In some embodiments, the rotating handle includes a handle shaft rotatably mounted on the handrail body, a handle disposed at one end of the handle shaft, and a connecting block disposed at the other end of the handle shaft. The connecting block is located inside the handrail body, and the handle is located outside the handrail body.

[0011] In some embodiments, a plug hole and a slot communicating with the plug hole are provided on the first end of the rotating plate and the connecting block; both ends of the pull rope are equipped with plug connectors, which are detachably plugged into the plug hole, and the pull rope passes through the slot.

[0012] In some embodiments, a bearing is sleeved on the limiting slide rod to reduce friction with the limiting through groove; the first end of the limiting slide rod passes through the sliding plate and is fixed to the backrest, and the backrest is rotatably connected to the armrest body through a pivot.

[0013] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0014] By controlling the rotating handle, the locking teeth between the rotating plate and the sliding plate can be released or engaged. When the locking teeth are released, the limiting slide rod slides in an arc along the limiting through groove, and the sliding plate can slide in an arc within the sliding groove, thereby changing the angle between the chair back and the seat and adjusting the tilt angle of the chair back. When the locking teeth are engaged, the angle between the chair back and the seat is locked and positioned to prevent the chair back from rotating arbitrarily. This application has a compact structure, is easy to use, and has good applicability.

[0015] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural diagram of the present application when installed on a chair;

[0018] Figure 2 This is a frontal three-dimensional structural schematic diagram of this application;

[0019] Figure 3 This is a schematic diagram of the front view structure of this application;

[0020] Figure 4 This is a rear-view stereoscopic structural diagram of this application;

[0021] Figure 5 A schematic diagram of the main view structure after removing the armrest body;

[0022] Figure 6 yes Figure 5 Front view three-dimensional structure diagram;

[0023] Figure 7 yes Figure 5 A rear-view three-dimensional structural diagram.

[0024] Figure label:

[0025] Armrest body 1, armrest panel 100, cover plate 101;

[0026] 2. Sliding groove; 3. Sliding plate; 4. Rotating plate; 5. Pull rope; 6. Connector 500;

[0027] Rotating handle 6, handle shaft 600, handle 601, connecting block 602;

[0028] 7. Clamping tooth; 8. Limiting through groove; 9. Limiting slide bar; 900 bearing.

[0029] 10. Return spring; 11. Mounting post; 12. Socket hole; 13. Slot; 14. Chair back.

[0030] 15. Rotating shaft 16. Connecting piece 17. Seat 18. Pin 18. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Reference Figures 1-7A handrail includes a handrail body 1, an arc-shaped sliding groove 2 is provided on one side of the handrail body 1, and a sliding plate 3 that can slide in an arc along the sliding groove 2 is installed in the sliding groove 2.

[0036] A rotating plate 4 is hinged to the other side of the handrail body 1 via a pin 18. A pull rope 5 is connected to the first end of the rotating plate 4, and the pull rope 5 is connected to a rotating handle 6 hinged to the handrail body 1.

[0037] The bottom of the second end of the rotating plate 4 and the top of the sliding plate 3 are both provided with locking teeth 7, and the rotating plate 4 and the sliding plate 3 are engaged by the locking teeth 7;

[0038] An arc-shaped limiting groove 8 is provided on the handrail body 1. A limiting slide rod 9 is inserted into the limiting groove 8. The limiting slide rod 9 can slide along the limiting groove 8. The first end of the limiting slide rod 9 is connected and fixed to the sliding plate 3. A return spring 10 is installed on the second end of the limiting slide rod 9. The other end of the return spring 10 is installed on the handrail body 1 near the first end of the rotating plate 4. Specifically, it is hung on the mounting post 11 located inside the handrail body 1 by a hook.

[0039] Cover plates 101 are provided on both sides of the handrail body 1 to cover the sliding groove 2, rotating plate 4, limiting through groove 8, etc., making it more aesthetically pleasing;

[0040] In use, first rotate the rotating handle 6. When the rotating handle 6 rotates, it pulls the pull rope 5, which in turn drives the rotating plate 4 to rotate. Then, the rotating plate 4 and the locking teeth 7 on the sliding plate 3 are disengaged, and the two are no longer engaged. At this time, the limiting slide rod 9 is pushed by external force, and the limiting slide rod 9 slides in an arc along the limiting through groove 8. At the same time, it drives the sliding plate 3 to slide in an arc within the sliding groove 2. When the sliding plate 3 slides, the return spring 10 will be stretched. If the rotating handle 6 is released at this time, the rotating plate 4 will rotate in the opposite direction under the force of the pull rope 5 and reset itself, so that the rotating plate 4 and the sliding plate 3 re-engage through the locking teeth 7 to achieve positioning. If the pushing of the limiting slide rod 9 is stopped and the rotating handle 6 is not released, the limiting slide rod 9 and the sliding plate 3 will automatically reset under the force of the return spring 10.

[0041] In some embodiments, the rotating handle 6 includes a handle shaft 600 rotatably mounted on the handrail body 1, a handle 601 disposed at one end of the handle shaft 600, and a connecting block 602 disposed at the other end of the handle shaft 600. The connecting block 602 is located inside the handrail body 1, and the handle 601 is located outside the handrail body 1. When the handle 601 is rotated, the handle shaft 600 rotates synchronously, and the connecting block 602 drives the pull rope 5 to move toward the end of the handle shaft 600, and drives the rotating plate 4 to rotate. The handle 601 is a plate, which can increase the contact area with the fingers and facilitate rotation. The handle shaft 600 is a cylinder, which facilitates rotation and reduces resistance. The connecting block 602 is roughly triangular and is provided with an arc-shaped surface.

[0042] In some embodiments, a plug hole 12 and a slot 13 communicating with the plug hole 12 are provided on the first end of the rotating plate 4 and the connecting block 602; both ends of the pull rope 5 are equipped with plug connectors 500, which are detachably plugged into the plug hole 12, and the pull rope 5 passes through the slot 13; the plug connector 500 is a cylinder, the plug hole 12 is a through round hole, and the slot 13 is roughly a U-shaped groove, which serves to prevent air leakage and facilitate the entry of both ends of the pull rope 5. The above structure is easy to install and disassemble, and easy to maintain and replace.

[0043] In some embodiments, a bearing 900 is sleeved on the limiting slide rod 9 to reduce friction with the limiting through groove 8, resulting in smoother sliding and less noise. The limiting slide rod 9 can be a screw or bolt with external threads at one end. The first end of the limiting slide rod 9 passes through the sliding plate 3 and is fixed to the backrest 14. The backrest 14 is rotatably connected to the armrest body 1 via a pivot 15. The lower end of the armrest body 1 can be fixed to the seat 17 via bolts or screws or other connecting parts 16. An armrest panel 100 is installed on the top of the armrest body 1. The armrest panel 100 can be fixed or height-adjustable.

[0044] Refer to Figure 1 In use, first rotate the handle 6. Rotating the handle 6 pulls the cord 5, which in turn rotates the rotating plate 4. Then, the rotating plate 4 and the sliding plate 3 disengage from the locking teeth 7, and they are no longer engaged. At this time, you can push the backrest 14 backward with your back, causing the backrest 14 to rotate backward along the pivot 15. The limiting slide rod 9 connected to the backrest 14 slides backward in an arc along the limiting groove 8. Simultaneously, it causes the sliding plate 3 to slide in an arc within the sliding groove 2. When the sliding plate 3 slides, the return spring 10 is stretched. If you release the handle 6 at this time, the rotating plate 4 rotates in the opposite direction under the force of the cord 5 and resets itself, causing the rotating plate 4 and the sliding plate 3 to re-engage through the locking teeth 7, thus achieving the desired tilt angle between the backrest 14 and the seat 17. If you stop pushing... With the backrest 14 held in place and the rotating handle 6 not released, the backrest 14 will automatically return to its original position under the force of the return spring 10, restoring the tilt angle between the backrest 14 and the seat 17 to its initial state, such as 90 degrees or 91 degrees. Initially, the angle between the backrest 14 and the seat 17 is around 90 degrees. When rotating backward, the angle between the two gradually increases. The limiting groove 8 is used to limit the rotation angle of the backrest 14. The combination of the limiting slide rod 9 and the limiting groove 8 can improve the stability of the connection structure between the backrest 14 and the seat 17 and enhance the load-bearing performance. In this application, by controlling the rotating handle 6 and pressing the backrest 14, the tilt angle between the backrest 14 and the seat 17 can be changed, making it easier to find the most suitable tilt angle of the backrest 14. This makes it more convenient to use and has better applicability.

[0045] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A handrail, comprising a handrail body, characterized in that: An arc-shaped sliding groove is provided on one side of the handrail body, and a sliding plate that can slide along the sliding groove is installed inside the sliding groove; A rotating plate is hinged to the other side of the handrail body. A pull rope is connected to the first end of the rotating plate, and the pull rope is connected to a rotating handle hinged to the handrail body. The bottom of the second end of the rotating plate and the top of the sliding plate are both provided with locking teeth, and the rotating plate and the sliding plate are engaged by the locking teeth; An arc-shaped limiting groove is provided on the handrail body, and a limiting slide rod is inserted into the limiting groove. The limiting slide rod can slide along the limiting groove. The first end of the limiting slide rod is connected and fixed to the sliding plate, and a return spring is installed at the second end of the limiting slide rod. The other end of the return spring is installed on the handrail body near the first end of the rotating plate.

2. The handrail as described in claim 1, characterized in that: The rotating handle includes a handle shaft that is rotatably mounted on the handrail body, a handle located at one end of the handle shaft, and a connecting block located at the other end of the handle shaft. The connecting block is located inside the handrail body, and the handle is located outside the handrail body.

3. The handrail as described in claim 2, characterized in that: in The first end of the rotating plate and the connecting block are provided with insertion holes and slots communicating with the insertion holes; both ends of the pull rope are equipped with plugs, which can be detachably inserted into the insertion holes, and the pull rope passes through the slots.

4. The handrail as described in claim 3, characterized in that: in The limiting slide rod is fitted with a bearing to reduce friction with the limiting through groove; the first end of the limiting slide rod passes through the sliding plate and is fixed to the backrest, and the backrest is rotatably connected to the armrest body through a pivot.

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