Handrail clamping device

Abstract

The utility model discloses a handrail clamping device, which comprises a mounting seat, the gear transmission pair is rotationally mounted on the mounting seat and comprises a driving gear and a driven gear, and the driving gear is in meshed transmission connection with the driven gear; the linkage assembly is in transmission connection with the gear transmission pair and comprises two swing parts symmetrically arranged on the mounting base, the two swing parts are connected with the driving gear and the driven gear respectively, the two swing parts are located on the same side of the mounting base, and each swing part comprises a clamping piece used for clamping the handrail; the handheld rod is rotationally arranged on the mounting seat, is connected with the driving gear and drives the driving gear to rotate, is suitable for being held by a palm, and rotates towards one side of the arm to drive the two swinging parts to rotate oppositely and drive the two clamping parts to clamp the handrail, so that when the user climbs the stairs upwards, the palm exerts force towards one side of the body, and the handrail is clamped by the two clamping parts. The handrail can be clamped by the clamping piece through the gear transmission pair, supporting force for upwards climbing stairs can be provided, and operation and use are simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to a stair climbing auxiliary tool, in particular to a handrail clamping device. Background Art

[0002] For some older people, they have problems with inconvenient legs and poor leg strength, which makes it difficult for them to climb stairs. In the related art, there is a mechanism for clamping handrails in the auxiliary tools for climbing stairs. The elderly hold the auxiliary tools to climb the stairs. In addition to using leg strength, hand strength can also assist in climbing the stairs. However, the auxiliary tools generally use an independent control method to clamp the handrails, which is independent of the operation of the elderly climbing the stairs. For example, the handrails are clamped by electric control or mechanical operation and the motion mechanism is locked. Only then can the elderly use the auxiliary tools to climb up. There are problems of cumbersome operation and inconvenient use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a handrail clamping device, which combines the operation of clamping the handrail and climbing stairs, has a simple structure, and is more convenient to operate and use.

[0004] The armrest clamping device according to the embodiment of the utility model comprises:

[0005] Mounting seat;

[0006] A gear transmission pair, rotatably mounted on the mounting seat, the gear transmission pair comprising a driving gear and a driven gear, the driving gear being meshed and transmission-connected with the driven gear;

[0007] A linkage assembly is transmission-connected to the gear transmission pair, the linkage assembly comprises two swing components symmetrically arranged on the mounting seat, the two swing components are respectively connected to the driving gear and the driven gear, the two swing components are located on the same side of the mounting seat, the swing component comprises a clamping member, and the clamping member is used to clamp the handrail;

[0008] A hand-held rod is rotatably arranged on the mounting seat, the hand-held rod is connected to and drives the driving gear to rotate, the hand-held rod is suitable for being held by a palm, and the hand-held rod rotates toward one side of the arm to drive the two swinging parts to rotate toward each other and drive the two clamping parts to clamp the armrest.

[0009] The handrail clamping device according to the embodiment of the utility model has at least the following beneficial effects: when in use, the clamping member is aligned with the handrail, the user holds the handle tightly with his palm, and applies force to one side of the body with his palm when climbing up the stairs. The clamping member can not only clamp the handrail through the gear transmission pair, but also provide support force for climbing up the stairs. The overall structure is simpler and the operation and use are easier.

[0010] According to the armrest clamping device of the utility model, the hand-held rod is cylindrical.

[0011] According to the armrest clamping device of the utility model, the length of the hand-held rod extending from the mounting seat is A, which satisfies: A≥180mm.

[0012] According to the handrail clamping device of the utility model, the following is satisfied: 280mm≤A≤800mm.

[0013] According to the armrest clamping device of the utility model, the hand-held rod is fixedly connected with a rotating shaft, and the rotating shaft is connected to the driving gear through a key.

[0014] According to the armrest clamping device described in the utility model, the swing component also includes a swing arm, the driving gear and the driven gear are both provided with a hub, one end of the swing arm is suitable for being sleeved on the hub and having an interference fit with the hub, and the end of the swing arm facing away from the hub is connected to the clamping member.

[0015] According to the armrest clamping device described in the utility model, a compression spring is connected between the two swing components, and both ends of the compression spring are respectively connected to the two swing components. The compression spring is used to drive the two swing components to move toward each other.

[0016] According to the armrest clamping device of the utility model, friction soft blocks are arranged on opposite sides of the two clamping members.

[0017] According to the armrest clamping device of the utility model, the friction soft block is provided with a contact surface, and the contact surface matches the shape of the armrest.

[0018] According to the armrest clamping device of the utility model, the mounting seat and the hand-held rod are both made of aluminum alloy.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is an exploded view of the armrest clamping device of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the armrest clamping device of the utility model embodiment;

[0023] Figure 3 It is a schematic diagram of the overall structure of the armrest clamping device according to an embodiment of the utility model.

[0024] Description of Figure Numbers:

[0025] Mounting seat 100;

[0026] Gear transmission pair 200; driving gear 210; first hub 211; driven gear 220; second hub 221;

[0027] Swinging component 300; clamping member 310; friction soft block 311; contact surface 3111; swing arm 320;

[0028] Hand-held rod 400; Rotating shaft 410;

[0029] Compression spring 500. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] For some older people, they have problems with inconvenient legs and poor leg strength, which makes it difficult for them to climb stairs. In the related art, there is a mechanism for clamping handrails in the auxiliary tools for climbing stairs. The elderly hold the auxiliary tools to climb the stairs. In addition to using leg strength, hand strength can also assist in climbing the stairs. However, the auxiliary tools generally use an independent control method to clamp the handrails, which is independent of the operation of the elderly climbing the stairs. For example, the handrails are clamped by electric control or mechanical operation and the motion mechanism is locked. Only then can the elderly use the auxiliary tools to climb up. There are problems of cumbersome operation and inconvenient use.

[0036] For this reason, Figures 1 to 3As shown, the handrail clamping device proposed by the utility model includes a mounting seat 100, a gear transmission pair 200, a linkage assembly and a hand-held rod 400. The gear transmission pair 200, the linkage assembly and the hand-held rod 400 are all rotatably arranged on the mounting seat 100, and the hand-held rod 400, the gear transmission pair 200 and the linkage assembly are sequentially connected in transmission. Among them, the gear transmission pair 200 includes a driving gear 210 and a driven gear 220 in meshing transmission connection, and the linkage assembly includes two swing components 300 symmetrically arranged on the mounting seat 100, and the two swing components 300 are respectively connected to the driving gear 210 and the driven gear 220. In addition, the two swing components 300 are located on the same side of the mounting seat 100, and the swing components 300 include a clamping member 310, and the clamping member 310 is used to clamp the handrail. Furthermore, the hand-held lever 400 is connected to and drives the driving gear 210 to rotate. The hand-held lever 400 is suitable for being held by the palm. The hand-held lever 400 rotates toward one side of the arm to drive the two swinging parts 300 to rotate toward each other and drive the two clamping members 310 to clamp the handrail. It should be noted that when in use, the clamping member 310 is aligned with the handrail so that the handrail is located between the two clamping members 310. Then, the user holds the hand-held lever 400 tightly with his palm and exerts force on one side of the body when climbing up the stairs. This can not only make the clamping member 310 clamp the handrail through the gear transmission pair 200, but also provide support for climbing up the stairs. The overall structure is simpler and the operation is easier. After climbing up a flight of stairs, such as one or two steps, the palm of the hand moves the hand-held rod 400 along the side away from the body, and the two clamping members 310 move backwards to loosen the handrail. Then, the mounting base 100 is pushed upward to move the clamping members 310 to the upper end of the handrail. Finally, the above operation of pulling the hand-held rod 400 toward the side of the body is repeated, and the user can continue to use the power of the hand to assist in climbing the stairs.

[0037] In some embodiments, the handle 400 is prism-shaped (not shown in the figure). Figure 1As shown, the hand-held rod 400 is cylindrical and has a smooth appearance, which provides a better grip and a better user experience. Specifically, since the user needs to use the palm of the hand-held rod 400 to use, in some embodiments of the utility model, the length of the hand-held rod 400 extending out of the mounting seat 100 is A, which satisfies: A ≥ 180 mm, and the palms of both hands of the user can simultaneously hold the hand-held rod 400, and the hand as a whole exerts force to pull the body upward for a better effect. In some embodiments, 280 mm ≤ A ≤ 800 mm. By lengthening the length of the hand-held rod 400, when the user holds the hand-held rod 400, the farther the distance from the rotation axis 410 of the hand-held rod 400 is, the smaller the force required for the user to rotate the hand-held rod 400 to clamp the handrail, and the user can reasonably use different holding positions of the hand-held rod 400 according to his or her own physical condition. Optionally, A=300mm, in some embodiments, A=350mm; or, A=380mm; or, A=400mm; or, A=420mm; or, A=450mm; or, A=480mm; or, A=500mm; or, A=550mm; or, A=600mm; or, A=700mm; or, A=800mm.

[0038] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the hand-held rod 400 is fixedly connected to the rotating shaft 410, and the rotating shaft 410 is connected to the driving gear 210 through a key, and the connection is stable and can reliably transmit torque. For example, the key connection can be a flat key or a round key, the outer wall of the rotating shaft 410 is provided with a first keyway, the inner wall of the driving gear 210 is provided with a second keyway, the flat key is installed in the first keyway, and part of the flat key extends into the second keyway and abuts against the side wall of the second keyway.

[0039] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the swing component 300 includes a swing arm 320, and both the driving gear 210 and the driven gear 220 are provided with a hub, one end of the swing arm 320 is suitable for being sleeved on the hub and having an interference fit with the hub, and the end of the swing arm 320 away from the hub is connected to the clamping member 310, which has a simple structure and is easy to install. Specifically, the driving gear 210 is provided with a first hub 211, one end of a swing arm 320 is sleeved on the first hub 211 and fixed to the first hub 211 by an interference fit, and the other end is fixedly connected to the clamping member 310. Relatively, the driven gear 220 is provided with a second hub 221, one end of another swing arm 320 is sleeved on the second hub 221 and fixed to the second hub 221 by an interference fit, and the other end is fixedly connected to another clamping member 310. In addition, the two clamping members 310 are arranged opposite to each other for clamping the handrail. In some embodiments, the swing arm and the hub are fixed by screws. Specifically, the swing arm is provided with a matching groove matching the outer shape of the wheel hub, the inner wall of the matching groove is provided with a threaded hole, and a screw is screwed into the threaded hole and extends into the matching groove to press and fix the wheel hub.

[0040] In some embodiments of the present invention, Figure 1 As shown, a compression spring 500 is connected between the two swing parts 300, and the two ends of the compression spring 500 are respectively connected to the two swing parts 300, and the compression spring 500 is used to drive the two swing parts 300 to move toward each other. Specifically, screws are installed on the opposite sides of the two swing arms 320, and the two ends of the compression screws are connected to the two screws, which can drive the two swing arms 320 to move toward each other and better compress the handrail.

[0041] In some embodiments of the present invention, Figures 1 to 3 As shown, the two clamping members 310 are provided with friction blocks 311 on opposite sides, which effectively increases the friction force between the two clamping members 310 and the armrest, and the connection with the armrest is more stable. Specifically, the friction block 311 is provided with a contact surface 3111, and the contact surface 3111 matches the shape of the armrest. For example, the armrest is square, and correspondingly, the contact surface 3111 is a plane; or, the armrest is cylindrical, and correspondingly, the contact surface 3111 is a curved surface (not shown in the figure). Optionally, the friction block 311 is a polyurethane block.

[0042] Optionally, the mounting base 100 and the hand-held rod 400 are both made of aluminum alloy. Compared with carbon steel, aluminum alloy is lighter, which reduces the burden on users and is more convenient for older users to use.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. The armrest clamping device is characterized in that: include: Mounting seat; A gear transmission pair, rotatably mounted on the mounting seat, the gear transmission pair comprising a driving gear and a driven gear, the driving gear being meshed and transmission-connected with the driven gear; A linkage assembly is transmission-connected to the gear transmission pair, the linkage assembly comprises two swing components symmetrically arranged on the mounting seat, the two swing components are respectively connected to the driving gear and the driven gear, the two swing components are located on the same side of the mounting seat, the swing component comprises a clamping member, and the clamping member is used to clamp the handrail; A hand-held lever is rotatably disposed on the mounting seat, the hand-held lever is connected to and drives the driving gear to rotate, the hand-held lever is suitable for being held by a palm, and the hand-held lever rotates toward one side of the arm to drive the two swinging parts to rotate toward each other and drive the two clamping parts to clamp the armrest; A compression spring is connected between the two swing components, and both ends of the compression spring are respectively connected to the two swing components, and the compression spring is used to drive the two swing components to move toward each other; The mounting seat and the hand-held rod are both made of aluminum alloy.

2. The armrest clamping device according to claim 1, characterized in that: The hand-held rod is cylindrical.

3. The handrail clamping device according to claim 1 or 2, characterized in that: The length of the hand-held rod extending out of the mounting seat is A, which satisfies: A≥180mm.

4. The armrest clamping device according to claim 3, characterized in that: Meets: 280mm≤A≤800mm.

5. The armrest clamping device according to claim 1, characterized in that: The hand-held rod is fixedly connected with a rotating shaft, and the rotating shaft is connected to the driving gear through a key.

6. The armrest clamping device according to claim 1, characterized in that: The swing component also includes a swing arm, the driving gear and the driven gear are both provided with a hub, one end of the swing arm is suitable for being sleeved on the hub and having an interference fit with the hub, and the end of the swing arm away from the hub is connected to the clamping member.

7. The handrail clamping device according to claim 1, 5 or 6, characterized in that: The two clamping members are each provided with a friction soft block on one side opposite to the other.

8. The armrest clamping device according to claim 7, characterized in that: The soft friction block is provided with a contact surface, and the contact surface matches the shape of the armrest.

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