Hand push ring fixing mechanism

Abstract

The utility model discloses a hand push ring fixing mechanism which comprises a main wheel, an installation mechanism is arranged outside the main wheel, the installation mechanism comprises a clamping assembly, a plurality of installation holes are formed in the outer wall of the main wheel at equal intervals, clamping grooves are formed in the inner walls of the installation holes, the clamping assembly is located in the clamping grooves, and the clamping assembly is matched with an installation rod; the limiting plate is connected with the rotating shaft in a sliding and penetrating manner; and the positioning assembly is arranged outside the rotating shaft in a sleeving manner. The arrangement mode that the clamping assembly, the limiting plate and the positioning assembly are matched is utilized, the pull rod in the clamping assembly is extruded through the limiting plate, so that the clamping rod can fix the hand pushing ring to the main wheel, the limiting plate is limited and fixed through the positioning assembly, and therefore the possibility that the limiting plate falls off can be prevented, and the service life of the hand pushing ring is prolonged. And during disassembly, the hand pushing ring can be replaced only by taking down a positioning sleeve in the positioning assembly, the bolts do not need to be disassembled one by one through a tool, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair related technical field, especially a hand push ring fixing mechanism. BACKGROUND

[0002] In the wheelchair racing competition, the athlete must use the special wheelchair to compete on the track, and the special wheelchair is the racing wheelchair, which must have at least two large wheels and a small wheel, and the two large wheels are arranged in the eight-character shape on both sides of the wheelchair to support the wheelchair and drive the wheelchair to walk.

[0003] In the existing racing wheelchair, a handrail ring is installed on the outside of the wheel to facilitate the user to control, and the user can manually rotate the handrail ring to control the wheelchair to move forward or backward. The existing handrail ring is generally fixed on the wheel of the wheelchair by bolts, and the bolts need to be disassembled one by one by tools during disassembly, which is time-consuming and laborious, and is not convenient. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a hand push ring fixing mechanism to solve the problems in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a hand push ring fixing mechanism, comprising a main wheel, a rotating shaft is fixedly connected in the middle of the main wheel, and a hand push ring is arranged outside the main wheel.

[0006] The outer part of the main wheel is provided with a mounting mechanism, and the mounting mechanism comprises:

[0007] The outer wall of the main wheel is equidistantly provided with a plurality of mounting holes, the inner wall of the mounting hole is provided with a clamping groove, the clamping assembly is located in the inside of the clamping groove, and the clamping assembly and the mounting rod are matched with each other to install the hand push ring.

[0008] The limiting plate is slidably connected with the rotating shaft.

[0009] The positioning assembly is sleeved outside the rotating shaft.

[0010] Preferably, the outer wall of the hand push ring is equidistantly fixedly connected with a plurality of mounting rods, and the mounting rod is slidably connected with the inner cavity of the mounting hole.

[0011] Preferably, the clamping assembly comprises:

[0012] The clamping rod is slidably connected with the inner cavity of the clamping groove, the mounting rod is provided with a clamping hole, and the clamping rod is slidably connected with the inner cavity of the clamping hole.

[0013] The fixed plate is located inside the clamping groove and is fixedly connected with the clamping rod;

[0014] The pull rod is fixedly connected to the outer wall of the clamping rod, the outer wall of the main wheel is equidistantly provided with a plurality of pull grooves, and the pull rod is slidably and penetratingly connected with the inner cavity of the pull groove.

[0015] The first compression spring is sleeved on the outer portion of the clamping rod.

[0016] Preferably, one end of the first compression spring is fixedly connected with the fixed plate, and the other end of the first compression spring is fixedly connected with the inner wall of the clamping groove.

[0017] Preferably, the positioning assembly comprises:

[0018] The outer wall of the rotating shaft is provided with an external thread, and the positioning sleeve is threadedly and penetratingly connected with the rotating shaft.

[0019] The outer wall of the positioning sleeve is equidistantly provided with a plurality of through grooves, a plurality of positioning rods are slidably and penetratingly connected with the inner cavities of the through grooves, the outer wall of the rotating shaft is equidistantly provided with a plurality of positioning holes, and the positioning rods are slidably and penetratingly connected with the inner cavities of the positioning holes.

[0020] A plurality of racks are fixedly connected with the plurality of positioning rods, respectively.

[0021] The gear is meshedly connected with the rack.

[0022] The inner wall of the through groove is provided with a sliding groove on both sides, a plurality of sliding blocks are fixedly connected with the plurality of positioning rods, respectively, and the sliding blocks are slidably and penetratingly connected with the inner cavities of the sliding grooves.

[0023] The second compression spring is located inside the sliding groove.

[0024] Preferably, one end of the second compression spring is fixedly connected with the sliding block, and the other end of the second compression spring is fixedly connected with the inner wall of the sliding groove.

[0025] The technical effects and advantages of the utility model are as follows:

[0026] The clamping rod can fix the hand pushing ring on the main wheel by extruding the pull rod in the clamping assembly through the limiting plate, the limiting plate is fixed and limited by the positioning assembly, so that the possibility of falling off of the limiting plate is prevented, and when disassembling, the positioning sleeve in the positioning assembly is only taken down, and the hand pushing ring can be replaced, without disassembling the bolts one by one through tools, and the utility model is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic view of the utility model.

[0028] Figure 2 It is a front internal structure schematic view of the utility model.

[0029] Figure 3 It is a front internal structure schematic view of the utility model at the clamping assembly.

[0030] Figure 4 It is a top view internal structure schematic view of the utility model at the positioning assembly.

[0031] Figure 5 It is a whole structure schematic view of the utility model Figure 4 Enlarged structure schematic view at A.

[0032] In the drawing: 1, main wheel; 2, rotating shaft; 3, hand pushing ring; 4, mounting mechanism; 41, clamping assembly; 411, clamping rod; 412, fixed plate; 413, pull rod; 414, first compression spring; 42, limiting plate; 43, positioning assembly; 431, positioning sleeve; 432, positioning rod; 433, rack; 434, gear; 435, sliding block; 436, second compression spring; 5, mounting rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] The utility model provides a kind of hand pushing ring fixing mechanism as Figures 1-5 As shown in the drawing, it includes main wheel 1, rotating shaft 2 is fixedly connected in the middle part of main wheel 1, and hand pushing ring 3 is arranged outside main wheel 1.

[0035] Mounting mechanism 4 is arranged outside main wheel 1, and mounting mechanism 4 includes clamping assembly 41, limiting plate 42 and positioning assembly 43; a plurality of mounting holes are equidistantly formed in the outer wall of main wheel 1, and a clamping groove is formed in the inner wall of the mounting hole; clamping assembly 41 is located inside the clamping groove, and clamping assembly 41 cooperates with mounting rod 5 to install hand pushing ring 3; limiting plate 42 is slidably connected with rotating shaft 2, a plurality of grooves are equidistantly formed in the outer wall of limiting plate 42, and the grooves are arranged to facilitate clamping and limiting pull rod 413 in clamping assembly 41; positioning assembly 43 is arranged outside rotating shaft 2 to position limiting plate 42.

[0036] Further, the outer wall of the hand pushing ring 3 is equidistantly and fixedly connected with a plurality of mounting rods 5, the mounting rod 5 is slidably and penetratingly connected with the inner cavity of the mounting hole, the mounting rod 5 can be inserted into the inner part of the mounting hole, and the mounting rod 5 is fixed by the clamping assembly 41, so that the hand pushing ring 3 is fixed on the outer part of the main wheel 1.

[0037] Further, the clamping assembly 41 comprises a clamping rod 411, a fixed plate 412, a pull rod 413 and a first compression spring 414, the clamping rod 411 is slidably and penetratingly connected with the inner cavity of the clamping groove, the mounting rod 5 is provided with a clamping hole, the clamping rod 411 is slidably and penetratingly connected with the inner cavity of the clamping hole; the fixed plate 412 is located in the inner part of the clamping groove, and the fixed plate 412 is fixedly connected with the clamping rod 411; the pull rod 413 is fixedly connected with the outer wall of the clamping rod 411, the outer wall of the main wheel 1 is equidistantly provided with a plurality of pull grooves, and the pull rod 413 is slidably and penetratingly connected with the inner cavity of the pull groove; the first compression spring 414 is sleeved on the outer part of the clamping rod 411, one end of the first compression spring 414 is fixedly connected with the fixed plate 412, and the other end of the first compression spring 414 is fixedly connected with the inner wall of the clamping groove, so that the first compression spring 414 is always in a compressed state, so that the fixed plate 412 can provide a stable elastic force for the clamping rod 411, so that when the plurality of pull rods 413 are lifted by the limiting plate 42, the clamping rod 411 can be clamped and fixed to the mounting rod 5, and the first compression spring 414 is further pressed, so that when disassembled, the plurality of clamping rods 411 can be automatically released from the fixing of the mounting rod 5 under the elastic force of the first compression spring 414, and the disassembly is facilitated.

[0038] Further, the positioning assembly 43 comprises a positioning sleeve 431, a positioning rod 432, a rack 433, a gear 434, a sliding block 435 and a second compression spring 436, the outer wall of the rotating shaft 2 is provided with an external thread, and the positioning sleeve 431 is threadedly and penetratingly connected with the rotating shaft 2; the outer wall of the positioning sleeve 431 is equidistantly provided with a plurality of through grooves, the plurality of positioning rods 432 are slidably and penetratingly connected with the inner cavities of the through grooves, the outer wall of the rotating shaft 2 is equidistantly provided with a plurality of positioning holes, the positioning rod 432 is slidably and penetratingly connected with the inner cavities of the positioning holes, and the plurality of positioning holes are annularly provided; the positioning rod 432 is penetratingly connected with the positioning hole, so that the positioning sleeve 431 can be fixed on the rotating shaft 2; the plurality of racks 433 are fixedly connected with the plurality of positioning rods 432 respectively; the gear 434 is in meshing connection with the rack 433; the inner wall of the through groove is provided with a sliding groove on both sides, the plurality of sliding blocks 435 are fixedly connected with the plurality of positioning rods 432 respectively, and the sliding block 435 is slidably and penetratingly connected with the inner cavity of the sliding groove; and the second compression spring 436 is located in the inner part of the sliding groove.

[0039] Further, one end of the second compression spring 436 is fixedly connected with the sliding block 435, and the other end of the second compression spring 436 is fixedly connected with the inner wall of the sliding groove, and the second compression spring 436 is always in a compressed state, so that the sliding block 435 can provide a stable elastic force on the positioning rod 432, so that one of the positioning rods 432 can be inserted into the positioning hole, and the other is in an extended state, so that after the positioning sleeve 431 is fixed on the rotating shaft 2 by the threaded insertion connection of the positioning sleeve 431 and the rotating shaft 2, the positioning sleeve 431 can be fixed on the rotating shaft 2 by the insertion of the positioning rod 432 into the positioning hole.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A hand push ring fixing mechanism, comprising: a main wheel (1), a rotating shaft (2) is fixedly connected in the middle of the main wheel (1), and a hand push ring (3) is arranged on the outer part of the main wheel (1); characterized in that the outer part of the main wheel (1) is provided with a mounting mechanism (4), the mounting mechanism (4) comprises: a clamping assembly (41), a plurality of mounting holes are equidistantly formed in the outer wall of the main wheel (1), a clamping groove is formed in the inner wall of the mounting hole, the clamping assembly (41) is located in the inside of the clamping groove, the clamping assembly (41) is matched with a mounting rod (5) for mounting the hand push ring (3), and the clamping assembly (41) comprises: a clamping rod (411), the clamping rod (411) is slidably and penetratingly connected with the inner cavity of the clamping groove, a clamping hole is formed in the mounting rod (5), and the clamping rod (411) is slidably and penetratingly connected with the inner cavity of the clamping hole; a fixed plate (412), the fixed plate (412) is fixedly connected with the clamping rod (411) and located in the inside of the clamping groove; a pull rod (413), the pull rod (413) is fixedly connected to the outer wall of the clamping rod (411), a plurality of pull grooves are equidistantly formed in the outer wall of the main wheel (1), and the pull rod (413) is slidably and penetratingly connected with the inner cavity of the pull groove; a first compression spring (414), the first compression spring (414) is sleeved on the outer part of the clamping rod (411); a limiting plate (42), the limiting plate (42) is slidably and penetratingly connected with the rotating shaft (2); a positioning assembly (43), the positioning assembly (43) is sleeved on the outer part of the rotating shaft (2), and the positioning assembly (43) comprises: a positioning sleeve (431), an external thread is formed in the outer wall of the rotating shaft (2), and the positioning sleeve (431) is threadedly and penetratingly connected with the rotating shaft (2); a positioning rod (432), a plurality of through grooves are equidistantly formed in the outer wall of the positioning sleeve (431), a plurality of positioning rods (432) are slidably and penetratingly connected with the inner cavities of the through grooves, a plurality of positioning holes are equidistantly formed in the outer wall of the rotating shaft (2), and the positioning rods (432) are slidably and penetratingly connected with the inner cavities of the positioning holes; a rack (433), a plurality of racks (433) are fixedly connected with the positioning rods (432) respectively; a gear (434), the gear (434) is meshedly connected with the rack (433); a sliding block (435), a sliding groove is formed in the inner wall of the through groove on both sides, a plurality of sliding blocks (435) are fixedly connected with the positioning rods (432) respectively, and the sliding block (435) is slidably and penetratingly connected with the inner cavity of the sliding groove; a second compression spring (436), the second compression spring (436) is located in the inside of the sliding groove.

2. A handgrip securing mechanism according to claim 1, wherein A plurality of mounting rods (5) are equidistantly and fixedly connected to the outer wall of the hand push ring (3), and the mounting rod (5) is slidably and penetratingly connected with the inner cavity of the mounting hole.

3. A handgrip securing mechanism according to claim 1, wherein One end of the first compression spring (414) is fixedly connected with the fixed plate (412), and one end of the first compression spring (414) is fixedly connected with the inner wall of the clamping groove.

4. The handoff ring securing mechanism of claim 1, wherein One end of the second compression spring (436) is fixedly connected with the sliding block (435), and the other end of the second compression spring (436) is fixedly connected with the inner wall of the sliding groove.

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