CN219921498U - Four-wheeled walking-aid cart with quick-detachable backrest - Google Patents

Abstract

The utility model discloses a backrest quick-dismantling four-wheel walking-assisting cart which comprises a cart main body, wherein one end of the cart main body is connected with a sleeve, a backrest is sleeved in the sleeve, a gear hole is formed in the sleeve, an elastic component is arranged in the backrest, the elastic component comprises a convex column end and a button end, the convex column end can be separated from the gear hole by pressing the button end so as to control the position of the backrest in the sleeve or realize one-key quick dismantling of the backrest, the convex column end and the button end are arranged on the elastic component, the convex column end can penetrate through the convex column hole and the gear hole so as to connect the backrest with the sleeve, the button end can control the protrusion or retraction of the convex column end to the gear hole in a pressing mode so as to control the gear position of the backrest in the sleeve, or realize one-key quick dismantling and quick assembling of the backrest.

Description

Four-wheeled walking-aid cart with quick-detachable backrest

Technical Field

The utility model relates to the technical field of walking-aid carts, in particular to a four-wheel walking-aid cart with a quick-detachable backrest.

Background

The four-wheel walking-aid cart is characterized in that the backrest is connected with the cart main body when the cart is usually out or the products leave the factory and transported, if the cart main body is not dismounted, a large volume is occupied, the backrest of the four-wheel walking-aid cart in the market and the cart main body are provided with screw locking, marble clamping and other modes, the screw fixing mode is adopted, when the backrest is dismounted, the screw is required to be mounted again in the subsequent mounting, the mode of marble clamping is very inconvenient, on one hand, the elastic force is large when the marble is clamped upwards, the direct finger is pressed downwards, the marble is difficult to separate from a sleeve gear hole sometimes, and the cart can be dismounted only by other tools, on the other hand, when a plurality of gears are arranged in the cart main body, the cart is required to be dismounted by repeatedly pressing the marble, and the utility model is very inconvenient.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a backrest quick-dismantling four-wheeled walking-aid cart so as to solve the technical problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a four-wheeled help capable shallow of back quick detach formula, includes the shallow main part, the one end of shallow main part is connected with the sleeve pipe, the intraductal back that has cup jointed of sleeve pipe, be equipped with the fender position hole on the sleeve pipe, be equipped with elastic component in the back, elastic component includes projection end and button end, be equipped with the projection hole that supplies the projection to stretch out usefulness on the back, the button end can control the projection end and stretch out the chucking of fender position hole outside realization back and shallow main part by the projection hole, also can let projection end and fender position hole break away from through pressing the button end to control the position of back in the sleeve pipe or realize the one-key quick detach of back.

The elastic component still includes V-arrangement shell fragment, the one end of V-arrangement shell fragment supports in back lumen lower extreme, and the other end is parallel and level with back lumen upper end, the projection end is located V-arrangement shell fragment inboard upper end, the position that corresponds the button end on the back is equipped with the button hole, and the button passes through the button hole downwards and is connected with V-arrangement shell fragment.

The V-shaped elastic piece is characterized in that a screw hole is formed in the V-shaped elastic piece, an external thread is arranged at the lower end of the button end corresponding to the screw hole, and the button end is detachably connected with the V-shaped elastic piece through the screw hole.

A further improvement is that the inside of the sleeve is provided with a blind end to limit excessive inward insertion of the backrest.

The improvement lies in further, sheathed tube inboard is equipped with the screw hole, the inboard of back corresponds the position of screw hole and is equipped with the screw groove position, and the sleeve pipe passes through the screw hole and realizes rotatable coupling with the shallow main part, and the back just can block on the bolt at the inside at sleeve pipe deepest screw groove position of inserting to show the excessive inside of back and insert.

The improved trolley is characterized in that a connecting shaft piece is further arranged on one side of the sleeve, the trolley main body further comprises a front wheel pipe and a rear wheel pipe, the upper end of the front wheel pipe is rotatably connected with the sleeve through the connecting shaft piece, the rear wheel pipe penetrates through the connecting shaft piece to be upwards connected with the handrail, and the other end of the connecting shaft piece is rotatably connected with the sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through setting up elastic component, set up projection end and button end on the elastic component, projection end can pass projection hole and fender position hole in order to realize being connected with the back with the sleeve pipe, the form control projection end that then accessible was pressed is to the extension or the withdrawal of fender position hole to control the back in sheathed tube keeps off the position, perhaps realize a key quick detach and fast-assembling back, compare in traditional needs press repeatedly or need with the help of the structure of instrument control marble, more practical, more swiftly.

(2) Through setting up the even axle piece, with front wheel pipe and sleeve pipe rotatable coupling, the sleeve pipe cup joints the back again, so realize the angle modulation of back, the people of different crowds of being convenient for use.

Drawings

Fig. 1: the whole structure schematic diagram of the backrest quick-release device in the walking-aid cart is shown;

fig. 2: the whole structure of the backrest quick-release device in the walking-aid cart is exploded and schematically shown;

fig. 3: the three-dimensional angle schematic diagram of the whole structure of the walking-aid cart is shown;

fig. 4: the side view angle schematic diagram of the whole structure of the walking-aid cart is shown;

fig. 5: the radial sectional schematic diagram of the whole structure of the walking-aid cart is shown;

fig. 6: an enlarged view of a part A of the walking aid cart of the utility model shown in the figure 5;

in the figure: the cart body 100, the sleeve 2, the backrest 3, the gear hole 201, the elastic component 210, the convex column end 211, the button end 212, the convex column hole 301, the V-shaped elastic piece 213, the button hole 302, the screw hole 214, the blind end 202, the screw hole 203, the screw groove 303, the connecting shaft piece 4, the front wheel tube 5, the rear wheel tube 6 and the handrail 7.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Referring to fig. 1 to 6:

referring to fig. 1-6, example 1: the utility model discloses a quick-release four-wheel walking-aid cart with a backrest 3, which comprises a cart main body 100, wherein the cart main body 100 comprises a front wheel pipe 5, a rear wheel pipe 6, front wheels and rear wheels as well as handrails 7, the cart main body 100 is connected with a sleeve 2 at the position of the crossing part of the upper ends of the front wheel pipe 5 and the rear wheel pipe 6, the sleeve 2 is provided with an inner tube cavity, the backrest 3 (the backrest 3 is provided with the backrest 3 pipe, the backrest 3 pipe is inserted into the inner tube cavity of the sleeve 2 from the inner side), a gear hole 201 is further arranged on the sleeve 2, an elastic component 210 is arranged in the backrest 3, the elastic component 210 comprises a convex column end 211 and a button end 212, the backrest 3 is provided with a convex column hole 301 for the convex column to extend, the button end 211 can be controlled to extend to the outer side of the gear hole 201, the convex column end 211 can be separated from the gear hole 201 through the button end 212, so that the convex column end 211 can be controlled to be positioned in the sleeve 2 or the position of the backrest 3 is completely separated from the inner tube, the inner tube 2 is a plurality of the button holes 201, the button end is conveniently arranged at the outer side of the sleeve 2, and the button end is not required to be matched with the button end 201, and the button end is arranged at the position of the button end 201.

Referring to fig. 6, specifically, the elastic component 210 further includes a V-shaped elastic piece 213, one end of the V-shaped elastic piece 213 abuts against the lower end of the backrest 3 lumen, and as a practical production, the end surface of the lower end of the backrest 3 lumen may be provided with a clamping slot and an elastic piece to be clamped with each other, so as to prevent the V-shaped elastic piece 213 from shifting, the other end is flush with the upper end of the backrest 3 lumen, the post end 211 is located at the upper end of the inner side of the V-shaped elastic piece 213, and a button hole 302 is disposed on the backrest 3 corresponding to the button end 212, and the button is connected with the V-shaped elastic piece 213 downward through the button hole 302.

Referring to fig. 6, in order to facilitate the installation of the elastic component 210, a screw hole 214 is formed in the V-shaped elastic piece 213, an external thread is formed at a position of the lower end of the button end 212 corresponding to the screw hole 214, and the button end 212 is detachably connected with the V-shaped elastic piece 213 through the screw hole 214, so that when in installation, the V-shaped elastic piece 213 can be inserted into the inner side of the lumen of the backrest 3, then the position of the screw hole 214 is found, and the button end 212 is aligned with the button hole 302 for installation.

Referring to fig. 6, in particular, the inside of the sleeve 2 is provided with a blind end 202 to limit excessive inward insertion of the backrest 3.

Referring to fig. 1 and 6, example 2: on the basis of embodiment 1, the inner side of the sleeve 2 is provided with a screw hole 203, the inner side of the backrest 3 is provided with a screw slot 303 corresponding to the position of the screw hole 203, the sleeve 2 is rotatably connected with the cart main body 100 through the screw hole 203, the screw slot 303 just can be clamped on a bolt when the backrest 3 is inserted into the deepest part of the sleeve 2, so as to show that the backrest 3 is excessively inserted inwards, embodiment 1 prevents the backrest 3 from being excessively inserted through the blind end 202, and the embodiment prevents the backrest 3 from being excessively inserted into the sleeve 2 through the cooperation of the screw slot 303 and a screw.

Referring to fig. 1, 3 and 6, specifically, one side of the sleeve 2 is further provided with a coupling piece 4, the cart body 100 further includes a front wheel tube 5 and a rear wheel tube 6, wherein the upper end of the front wheel tube 5 is rotatably connected with the sleeve 2 through the coupling piece 4, the rear wheel tube 6 passes through the coupling piece 4 to be upwardly connected with the armrest 7, the other end of the coupling piece 4 is rotatably connected with the sleeve 2, and when the cart is installed, the coupling piece 4 can adopt two-side wrapping, so that the rear wheel tube 6 can be wrapped inside.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (6)

1. The utility model provides a four-wheeled walking aid of back quick detach formula shallow, includes the shallow main part, the one end of shallow main part is connected with the sleeve pipe, the intraductal back that has cup jointed of sleeve, its characterized in that: be equipped with the fender position hole on the sleeve pipe, be equipped with elastic component in the back, elastic component includes projection end and button end, be equipped with the projection hole that supplies the projection to stretch out usefulness on the back, the button end can control the projection end to stretch out the chucking of fender position hole outside realization back and shallow main part by the projection hole, also can let the projection end break away from with fender position hole through pressing the button end to control the back in intraductal position of sleeve or realize the one-key quick detach of back.

2. The four-wheeled walker of claim 1 wherein: the elastic component still includes V-arrangement shell fragment, the one end of V-arrangement shell fragment supports in back lumen lower extreme, and the other end is parallel and level with back lumen upper end, the projection end is located V-arrangement shell fragment inboard upper end, the position that corresponds the button end on the back is equipped with the button hole, and the button passes through the button hole downwards and is connected with V-arrangement shell fragment.

3. The four-wheeled walker of claim 2 wherein: the V-shaped elastic piece is provided with a screw hole, an external thread is arranged at the lower end of the button end corresponding to the screw hole, and the button end is detachably connected with the V-shaped elastic piece through the screw hole.

4. A four-wheeled walker as claimed in any one of claims 1 to 3 wherein: the inside of the sleeve is provided with a blind end to limit excessive inward insertion of the backrest.

5. A four-wheeled walker as claimed in any one of claims 1 to 3 wherein: the inside of sheathed tube is equipped with the screw hole, the inboard of back corresponds the position of screw hole and is equipped with the screw groove position, and the sleeve pipe passes through the screw hole and realizes rotatable coupling with the shallow main part, and the screw groove position just can block on the bolt when the back inserts the sleeve pipe deepest inwards to show that the back is excessively inwards inserted.

6. The four-wheeled walker of claim 5 wherein: the trolley is characterized in that a connecting shaft piece is further arranged on one side of the sleeve, the trolley main body further comprises a front wheel pipe and a rear wheel pipe, the upper end of the front wheel pipe is rotatably connected with the sleeve through the connecting shaft piece, the rear wheel pipe penetrates through the connecting shaft piece to be upwards connected with the handrail, and the other end of the connecting shaft piece is rotatably connected with the sleeve.