TW201504096A - Mobile wheel safety locking device of cart type wheels - Google Patents

Abstract

The present invention relates to a mobile wheel safety locking device of cart type wheels such as a wheelchair and a wheeled walker, which comprises a frame body, a mobile wheel, a gear disc, a holding rack, a fitting member, an elastic element and an actuating wire. Normally, the fitting member is engaged to the gear disc by the elastic element, so that the gear disc in conjunction with the mobile wheel cannot rotate, thereby avoiding the cart-type wheels from sliding itself or being pushed; and when it is desired to push the cart-type wheel, just press structures such as the handle to pull the internal cable of the actuating wire, then the fitting member can be separated from the gear disc, thereby allowing the mobile wheel to change into a rotatable state, at this moment the user can push the cart-type wheel for movement; but once the user lets go without pressing the handle anymore, the elastic element will immediately push the fitting member back to be mutually engaged with the gear disc, this invention thereby avoids all kinds of accidents and provides a better security.

Description

Moving wheel safety locking device for cart type wheel

The invention relates to a wheeled wheel such as a wheelchair or a walking aid, and more particularly to a moving wheel safety locking device applied to a wheeled wheel.

Various types of cart-type wheels, such as wheelchairs and walking aids, are used for assisting people with limited mobility to move. The structure of the cart-type wheel includes a body with a grip and a seat. The armrest has a plurality of moving wheels at the bottom of the frame, and the moving wheel enables the cart-type wheel to be smoothly pushed, and the user assists walking by pushing the wheel-type wheel.

However, in the prior art cart-type wheel, the moving wheel and the frame body are only simple pivotal joints, so when the user stops the cart-type wheel without pushing, the moving wheel is still rotatable. The state cannot be locked, so when the stop of the cart-type wheel has a slope, it may cause the cart-type wheel to slide with the slope, which may cause danger; in addition, if the person with a wise person uses the wheelchair, When the caregiver temporarily leaves, it is also impossible to prevent the person who has lost the sorcerer from moving by himself. Therefore, it is necessary to design a solution that can provide a wheeled wheel to lock its moving wheel.

In view of the above-mentioned prior art cart-type wheel, the disadvantages and disadvantages of the moving wheel being unable to be locked by the user, the present invention provides a moving wheel safety locking device for the cart-type wheel, which can effectively solve the above disadvantages.

In order to achieve the above object, the technical means adopted by the present invention is to design a moving wheel safety locking device for a cart type wheel, which comprises: a frame body; a moving wheel rotatably disposed on the frame body; a sprocket wheel fixed to the moving wheel; a fixing frame fixed to the frame body; a fitting member linearly movable relative to the fixing frame; an elastic member disposed on the fixing frame and the fitting member Between the elastic members pushing against the fitting member, the fitting member is fitted to the periphery of the toothed disc; the actuating line is disposed on the fixing frame, the actuating wire comprises an outer sleeve and an inner cable; the inner cable can be Slidingly disposed in the outer sleeve, one end of the inner cable protrudes outside the outer sleeve and is fixed to the fitting.

The invention has the advantages that, in normal times, the elastic member fits the fitting member to the periphery of the toothed disc, so that the toothed disc and the moving wheel cannot rotate, thereby preventing the cart-type wheel from sliding or being pushed by itself, and also avoiding the wise person. When the cart-type wheel is used to drive by itself, an accident occurs. When the cart-type wheel is to be pushed, only the structure of the handle or the like is required to pull the inner cable of the actuating wire, so that the fitting member is separated from the toothed disc, and further The moving wheel is changed to a rotatable state, at which time the user can push the cart-type wheel; and once the user releases the hand and no longer presses the handle, the elastic member immediately pushes the fitting back to the chainring By fitting and moving the moving wheel again, the present invention thereby avoids various accidents and provides better safety.

10‧‧‧ ‧ body

11‧‧‧foot

111‧‧‧Axle

20‧‧‧Mobile wheels

21‧‧‧ bearing

30‧‧‧Hands

40‧‧‧ toothed disc

41‧‧‧ screws

50‧‧‧ Fixing frame

51‧‧‧Circle

511‧‧‧ screws

512‧‧‧ nuts

52‧‧‧Abutment board

53‧‧‧Pipe pipe

54‧‧‧stop tube

541‧‧ ‧ long gap

55‧‧‧Connecting tube

551‧‧ ‧ class

56‧‧‧ Nuts

60‧‧‧ fittings

61‧‧‧ Department of Wear

611‧‧‧ long ribs

62‧‧‧Mate

621‧‧‧Fitting arm

70‧‧‧Flexible components

80‧‧‧ actuation line

81‧‧‧Outer casing

82‧‧‧ inner cable

83‧‧‧ screws

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of the present invention mounted on a cart wheel.

Figure 2 is a perspective view of the present invention.

Figure 3 is an exploded view of the components of the present invention.

Figure 4 is a partial side cross-sectional view of the present invention.

Figure 5 is a schematic side view of the present invention.

Figure 6 is a side elevational view of the invention in use.

The technical means adopted by the present invention for achieving the intended purpose of the invention are further described below in conjunction with the drawings and preferred embodiments of the invention.

Referring to FIG. 1 , the present invention is applied to a cart-type wheel, and then a wheelchair is used as a specific embodiment of the cart-type wheel. However, the scope of application of the present invention is not limited to wheelchairs. limit.

Referring to FIG. 1 to FIG. 3, the wheelchair of the embodiment includes a frame body 10, four moving wheels 20 and two handles 30. The four corners of the bottom of the frame body 10 are respectively provided with a foot rod 11 and each foot rod. 11 is vertically connected to a wheel shaft 111; four moving wheels 20 are rotatably sleeved on the axles 111 of the four foot rods 11, and two bearings 21 are disposed between the moving wheels 20 and the corresponding axles 111; The handle 30 is provided on the top side of the frame 10 and extends rearward.

The moving wheel safety locking device of the cart wheel of the present invention comprises the aforementioned foot bar 11, one of the moving wheels 20, a toothed disk 40, a fixing frame 50, a fitting 60, and an elastic member 70. And the actuating line 80; in the present embodiment, the present invention is mounted on one of the rear legs 11.

The foregoing toothed disc 40 is sleeved on the axle 111 and is fixed on In the present embodiment, after the four screws 41 pass through the toothed disc 40, they are locked and fixed to the moving wheel 20, whereby the toothed disc 40 and the moving wheel 20 can be driven together.

Please refer to FIG. 2 to FIG. 4, the aforementioned fixing frame 50 is solid. The fixing frame 50 includes a ring wall 51, an abutting plate 52, a top tube 53, a stop tube 54, a connecting tube 55 and a nut 56; 51. The abutting plate 52 and the top pipe 53 are sequentially connected from bottom to top; the horizontal section of the ring wall 51 is U-shaped, and the foot bar 11 is interposed, and further, the two screws 511 are inserted through the ring wall 51 and the foot bar 11 The screw is fixed to the nut 512, thereby locking the fixing ring wall 51 and the foot rod 11; the rotation preventing tube 54 is pierced and welded and fixed in the top tube 53 and extends into the ring wall 51, and the rotation preventing tube 54 is The wall surface extends axially with a long gap 541; the connecting tube 55 is threaded into the rotation stop tube 54, and a connecting surface 55 is provided in the connecting tube 55; the nut 56 is screwed to the outside of the connecting tube 55, and is abutted The top end of the turret 54.

The aforementioned fitting member 60 is located below the fixing frame 50 and is fitted The member 60 includes a connecting portion 61 and a fitting portion 62. The through portion 61 is disposed in the ring wall 51 of the fixing frame 50, and the locking tube 54 is disposed in the ring wall 51. The inner wall surface of the insertion portion 61 protrudes from a long rib 611, and the long rib 611 is fitted with the long notch 541 of the rotation preventing tube 54. The fitting portion 62 includes two fitting arms 621, and the two fitting arms 621 are spaced apart. And the ends of the two fitting arms 621 correspond to the circumference of the spur 40.

The foregoing elastic member 70 is disposed on the fixing frame 50 and the fitting member 60. In the present embodiment, the elastic member 70 is a spring, and the elastic member 70 is disposed in the ring wall 51 of the fixing frame 50, and is sleeved outside the wearing portion 61 of the fitting member 60. Abutting against the fixing frame 50 respectively The fitting portion 62 of the plate 52 and the fitting member 60, and thereby pushing the fitting member 60 downward, so that the ends of the two fitting arms 621 of the fitting member 60 are fitted to the periphery of the chainring 40; The elastic member 70 is disposed between the holder 50 and the fitting member 60, thereby allowing the fitting member 60 to move linearly relative to the holder 50.

Please refer to FIG. 1 to FIG. 5, the aforementioned actuation line 80 is provided. On the fixing frame 50, one end is connected to one of the handles 30, and the other end is connected to the fitting member 60. The actuation wire 80 includes an outer sleeve 81 and an inner cable 82. One end of the outer sleeve 81 is disposed on the fixing frame 50. The top end of the connecting tube 55 is abutted against the level surface 551 in the connecting tube 55; the inner cable 82 is slidably disposed in the outer sleeve 81, and one end of the inner cable 82 protrudes outside the outer sleeve 81 and is fixed through The stop tube 54 of the frame 50 is inserted into one of the fitting arms 621 of the fitting member 60, and finally locked to the fitting arm 621 with a screw 83 to firmly fix the inner cable 82 (see FIGS. 2 and 5). In addition, since one end of the outer sleeve 81 abuts against the level surface 551 in the connecting tube 55, the nut 56 can be loosened to adjust the relative position of the connecting tube 55 and the anti-rotating tube 54, and then the tightness of the brake can be finely adjusted. degree.

Referring to FIG. 5, in the usual case, the fitting member 60 is elastic element. The member 70 is stacked downwardly and fitted to the toothed disc 40, so that the moving wheel 20 fixed to each other with the toothed disc 40 cannot be rotated, and the moving wheel 20 is in a locked state, thereby preventing the trolley-type wheel from sliding or being slid by itself. promote.

Please refer to Figure 1 and Figure 6, to push the cart wheel When only the handle 30 is pressed to pull the inner cable 82 of the actuating wire 80, the fitting member 60 can be moved upwardly by the compression elastic member 70 and further separated from the toothed disc 40, so that the toothed disc 40 is coupled with the moving wheel 20 It is changed to a rotatable state, at which point the user can push the cart-type wheel.

Please refer to Figure 5, and once the user let go, no longer press After pressing the handle 30, the compressed elastic member 70 will immediately push the fitting member 60 back to engage the toothed disc 40, and the moving wheel 20 is again locked. The present invention thereby avoids various accidents and Provide better security.

The above description is only a preferred embodiment of the present invention, and is not The present invention is not limited to the scope of the present invention, and the present invention is not limited to the scope of the present invention. Any equivalent modifications and equivalents to the above embodiments may be made in accordance with the technical spirit of the present invention without departing from the spirit and scope of the present invention. Variations and modifications are still within the scope of the technical solution of the present invention.

11‧‧‧foot

20‧‧‧Mobile wheels

40‧‧‧ toothed disc

41‧‧‧ screws

50‧‧‧ Fixing frame

51‧‧‧Circle

511‧‧‧ screws

512‧‧‧ nuts

52‧‧‧Abutment board

60‧‧‧ fittings

62‧‧‧Mate

621‧‧‧Fitting arm

70‧‧‧Flexible components

80‧‧‧ actuation line

81‧‧‧Outer casing

82‧‧‧ inner cable

83‧‧‧ screws

Claims (10)

A moving wheel safety locking device for a cart type wheel comprises: a frame body; a moving wheel rotatably disposed on the frame body; a toothed plate fixed to the moving wheel; and a fixing frame Fixing on the frame body; a fitting member linearly movable relative to the fixing frame; an elastic member disposed between the fixing frame and the fitting member, the elastic member pushing against the fitting member to fit the fitting member The outer circumference of the toothed disc; the constant moving line is disposed on the fixing frame, the actuating wire comprises an outer sleeve and an inner cable; the inner cable is slidably disposed in the outer sleeve, and one end of the inner cable protrudes from the outer sleeve Outside the tube, and fixed to the fitting. The moving wheel safety locking device of the cart type wheel according to claim 1, wherein the elastic member is a spring; the fitting member comprises a connecting portion and a fitting portion, and the wearing portion is inserted through the elastic portion. In the element, the fitting portion is pushed by the elastic member and fitted to the periphery of the toothed disc. The moving wheel safety locking device of the cart type wheel of claim 2, wherein the fixing frame comprises a ring wall and an abutting plate; the ring wall is provided with a fixing frame body; the abutting plate is connected to the upper side of the ring wall; The component is threaded into the annular wall and abuts against the abutment plate. The moving wheel safety locking device of the cart type wheel according to claim 3, wherein the fixing frame further comprises a top tube and a rotation stop tube; the top tube is connected to the top of the abutment plate; the rotation tube is fixed to the top The tube extends into the annular wall, and the anti-rotation tube is inserted into the insertion portion of the fitting. The moving wheel safety lock of the stroller wheel according to claim 4 The fixing frame further comprises a connecting tube and a nut; the connecting tube is threaded into the anti-rotation tube, and the connecting tube is provided with a class surface, and one end of the outer sleeve of the actuating wire is disposed at the top end of the connecting tube And abut against the class surface in the connecting pipe; the nut is screwed outside the connecting pipe and abuts against the top end of the stopping pipe. The moving wheel safety locking device of the cart type wheel according to claim 3, wherein the ring wall of the fixing frame is screwed to fix the frame body. The moving wheel safety locking device of the cart type wheel according to any one of claims 2 to 6, wherein the fitting portion of the fitting member includes two fitting arms, and the two fitting arms are spaced apart, and the two The ends of the two fitting arms are selectively fitted to the periphery of the toothed disc. The moving wheel safety locking device of the cart type wheel according to claim 7, wherein the inner cable of the actuating wire is fixed on one of the fitting arms of the fitting portion. The moving wheel safety locking device of the cart wheel according to any one of claims 1 to 6, wherein the frame body is provided with an axle, the axle is pivoted with the moving wheel, and a bearing is arranged between the axle and the moving wheel. . A moving wheel safety locking device for a stroller wheel according to any one of claims 1 to 6, wherein the toothed disc is screwed to the moving wheel.