Patent Description:
The present application relates to the technical field of the crutch, and particularly, relates to a deformable crutch.

As a necessary tool for the elderly population and the disabled population, the crutch has always had a fixed structure and shape. However, when the elderly people or the disabled people feel tired after walking, they often cannot rest on the spot. The crutch of the prior art is in a fixed structure form and has a single function, and is very inconvenient to carry.

<CIT>, relates to a crutch health recovery appliance, which is composed of an underarm support, a supporting foot, an upper bracket tube, a lower bracket tube, a stool face, a bracket connection tube, a stool face frame tube, a sheathing and pulling rod, a telescopic leg, a lower bracket fixing sleeve, a switching locking assembly, etc. This utility model is characterized in that the conversion locking assembly is composed of a left connector, a right connector, a positioning pin, a knurling sleeve and a spring connection element; the left connector is sheathed with the right connector; the positioning pin is positioned in the right connector and is connected with the left connector; the positioning pin, a small pin and the knurling sleeve are clamped; a connection sleeve is connected with the right connector; one end of the knurling sleeve is connected with the right connector; both ends of the conversion locking assembly are respectively connected with an upper bracket, a lower bracket and a stool face frame tube. The device has the advantages of reasonable structure, firm and reliable performance and convenient operation.

<CIT> relates to a collapsible auxiliary chair combined crutch, and more particularly, to a folding auxiliary chair combined crutch that can be used as a crutch and an auxiliary chair by folding the upper and lower parts of the crutch. It comprises a stick-shaped first support bar, a shoulder support portion having a shoulder support formed thereon, a first folding portion folding the shoulder support portion, a 'U'-shaped second support bar and a body formed with a handle, and a second installed at the bottom of the body. It includes a folding part, a stick-shaped third support bar, and a support leg part made of an anti-slip cap, so that the body is an auxiliary chair by folding the shoulder support part and the leg support part around the body without having a separate auxiliary chair. It has the advantage of being easy to use and light in weight. In addition, it has the effect of using the empty space of the body to sit on the body and use as an auxiliary support in the bathroom.

<CIT> discloses a dual-purpose crutch, which includes: a crutch part for underarm support, a lower crutch part for ground support, a seat plate part, a connecting piece and a U-shaped bolt. The seat plate part is fitted by the connecting piece and is restricted by the U-shaped bolt, and the lower knee part and the seat plate part are fitted by the connecting piece and are restrained by the U-shaped bolt. The utility model has multiple functions: it can be used as a walking stick for walking support, and can also be used as a seat stool for sitting down and resting, and the conversion operation is convenient and fast, and is very practical.

In order to solve the above-mentioned problems existing in the prior art, the present application provides a deformable crutch to solve the shortcomings of the prior art that the crutch has a single structure, and does not have a seat function, and is not convenient to carry.

The present invention is directed to a deformable crutch according to claim <NUM>. Additional features and embodiments of the invention are defined in the dependent claims. The present application is specifically realized through the following technical solutions:.

A deformable crutch of the present application comprises a hand-held part, a seat part, and a support part arranged such that the hand-held part and the seat part are rotatable connected, and the seat part and the support part are rotatable connected, and further comprising a first lock device for locking a rotation angle between the hand-held part and the seat part, and a second lock device for locking a rotation angle between the seat part and the support part, wherein the hand-held part comprises a handlebar, a first connecting rod, a second connecting rod, and a first cross rod, and one end of the first connecting rod and one end of the second connecting rod are respectively connected with two ends of the handlebar, and the other end of the first connecting rod and the other end of the second connecting rod are respectively connected with two ends of the first cross rod, wherein the seat part comprises a third connecting rod, a fourth connecting rod and a second cross rod, and one end of the third connecting rod and one end of the fourth connecting rod are respectively rotatably connected with the first cross rod, and the other end of the third connecting rod and the other end of the fourth connecting rod are respectively connected with two ends of the second cross rod, wherein the support part comprises a first support rod, and one end of the first support rod is rotatably connected with the second cross rod, and wherein the crutch further comprises a second support rod and a third support rod, and one end of the second support rod and one end of the third support rod are respectively hinged with one end of the first support rod far from the second cross rod, and the other end of the second support rod and the other end of the third support rod are respectively connected with the second cross rod such that they can be removed, and the first connecting rod is provided with a first blind hole, the second connecting rod is provided with a second blind hole, and the other end of the second support rod and the other end of the third support rod are respectively inserted into and matched with the first blind hole and the second blind hole.

When used as a crutch, the lock device can keep the hand-held part, the seat part and the support part in a vertical direction; both the hand-held part and the support part can be rotatably locked and supported on the ground, and the seat part can be used as a support surface for a stool surface to provide the user for a rest. A deformable crutch of the present application has a simple and reasonable structure and has the function of a stool.

As a further improvement, the hand-held part further includes a first reinforcing rod, and two ends of the first reinforcing rod are respectively connected with the first connecting rod and the second connecting rod. On the one hand, when used as a crutch for the elderly people or disabled people, the handlebar is clamped under the armpit, while the first reinforcing rod can be used as a handrail for convenient holding. On the other hand, when the crutch is deformed as a stool, the first reinforcing rod increases the structure strength of the hand-held part as a support leg, which improves the carrying capacity.

As a further improvement, the seat part further includes a second reinforcing rod, and two ends of the second reinforcing rod are respectively connected with the third connecting rod and the fourth connecting rod; or, two ends of the second reinforcing rod are respectively connected with the first cross rod and the second cross rod, and the second reinforcing rod can not only increase the structure stability of the seat part, but also share the load bearing of the third connecting rod and the fourth connecting rod, and prevent the third connecting rod and the fourth connecting rod from deforming and bending caused by a long time sitting pressure, to extend the service life of the deformable crutch.

The lock device includes a first connecting pipe and a second connecting pipe arranged in vertical communication with each other. One end of the second connecting pipe is communicated with a middle portion of the first connecting pipe, and the communicating section of the first connecting pipe is provided with a first strip-shaped opening along the axial direction of the first connecting pipe, and the side wall of the second connecting pipe is provided with two parallel second strip-shaped openings which are vertically connected with the first strip-shaped opening. The outer peripheral side of the second connecting pipe is further provided with a seat pipe clamp or a hoop. In specific use, the first cross bar is inserted into the first connecting pipe of the two lock devices, and the third connecting rod and the fourth connecting rod are respectively inserted into the second connecting pipe of the two lock devices, which are tightly locked by the seat pipe clamp or the hoop; the second cross rod is inserted into the first connecting pipe of a lock device, and the first support rod is inserted into the second connecting pipe, which are tightly locked by the seat pipe clamp or the hoop.

As a further improvement, one end of the second support rod and one end of the third support rod are rotatably connected with the first support rod through an elastic reset mechanism, respectively.

Furthermore, the elastic reset mechanism is a torsion spring, and the torsion spring is provided at a rotatable connection joint of the second support rod and the third support rod with the first support rod. When the torsion spring is in a normal state, one end of the torsion spring is clamped on the first support rod, and the other end of the torsion spring is clamped on the second support rod or the third support rod. At this time, the second support rod or the third support rod is parallel to the first support rod.

When used as a crutch, the second support rod and the third support rod can share the pressure on the first support rod at the upper end to prevent the excessive stress on the rotatable connection joint of the first support rod and the second cross rod. When used as a stool, the second support rod and the third support rod are respectively inserted into the first blind hole and the second blind hole, to enhance the structure stability when the stool is in use.

As a further improvement, a clamping slot is all respectively provided on a peripheral side wall of the insertion end of the second support rod and the third support rod. The width of the clamping slot is larger than the wall thickness of the first connecting rod and the second connecting rod. When used as a stool, the second support rod and the third support rod are respectively inserted into the first blind hole and the second blind hole, and then the second support rod or the third support rod are lightly pressed to clamp the pipe wall of the first connecting rod or the pipe wall of the second connecting rod into the clamping slot. The second support rod and the third support rod also play a role of fixing the stool.

As a further improvement, a plurality of rollers are further arranged at the lower portion of the second support rod and the third support rod. The crutch is deformed into a sliding stool, which is convenient for pushing or sliding.

As a further improvement, the first support rod is fixedly provided with a sleeve parallel to a first support rod. A control rod is inserted into the sleeve. The lower end of the control rod is provided with a driving wheel and an electric motor. The electric motor drives the driving wheel to transform the sliding stool into an electric scooter, which is more convenient for traveling and more convenient to carry.

Based on the above technical solutions, the technical effect of the present application is:.

Firstly, a deformable crutch of the present application transforms the crutch into a stool through a folded form to provide the user for a rest.

Secondly, a deformable crutch of the present application may further arrange rollers at the bottom as a sliding stool. Furthermore, adding an electric motor that drives the rollers to rotate as an electric scooter is very convenient whether it is used or carried.

In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the described accompanying drawings below is only some embodiments of the present application. For those skilled in the art, other accompanying drawings can be obtained according to these accompanying drawings without making creative efforts.

In the figures, <NUM>-first connecting pipe, <NUM>-second connecting pipe, <NUM>-first strip-shaped opening, <NUM>-second strip-shaped opening, <NUM>-seat pipe clamp, <NUM>-handlebar, <NUM>-first connecting rod, <NUM>-second connecting rod, <NUM>-first cross rod, <NUM>-first reinforcing rod, <NUM>-third connecting rod, <NUM>-fourth connecting rod, <NUM>-second cross rod, <NUM>-second reinforcing rod, <NUM>-first support rod, <NUM>-second support rod, <NUM>-third support rod, <NUM>-roller, <NUM>-control rod, <NUM>-driving wheel, <NUM>-sleeve.

In order to make the purpose, technical solutions, and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other implementations obtained by those skilled in the art without making creative efforts belong to the protection scope of the present application.

As shown in <FIG> and <FIG>, the present embodiment provides a deformable crutch, which includes a hand-held part, a seat part, and a support part arranged with rotatable connection in sequence, and further includes a first lock device for locking a rotation angle between the hand-held part and the seat part, and a second lock device for locking a rotation angle between the seat part and the support part.

The hand-held part includes a handlebar <NUM>, a first connecting rod <NUM>, a second connecting rod <NUM> and a first cross rod <NUM>. One end of the first connecting rod <NUM> and one end of the second connecting rod <NUM> are respectively connected with two ends of the handlebar <NUM>, and the other end of the first connecting rod <NUM> and the other end of the second connecting rod <NUM> are respectively connected with two ends of the first cross rod <NUM>.

The hand-held part further includes a first reinforcing rod <NUM>. Two ends of the reinforcing rod <NUM> are connected with the first connecting rod <NUM> and the second connecting rod <NUM>, respectively. When used as a crutch for the elderly people or disabled people with mobility difficulties, the handlebar <NUM> is placed under the armpit, while the first reinforcing rod <NUM> can be used as a handrail for convenient holding. On the other hand, when the crutch is deformed as a stool, the first reinforcing rod <NUM> increases the structure strength of the hand-held part as a support leg, which improves the carrying capacity of the hand-held part.

The seat part includes a third connecting rod <NUM>, a fourth connecting rod <NUM> and a second cross rod <NUM>. One end of the third connecting rod <NUM> and one end of the fourth connecting rod <NUM> are respectively rotatably connected with the first cross rod <NUM>, and the other end of the third connecting rod <NUM> and the other end of the fourth connecting rod <NUM> are respectively connected with two ends of the second cross rod <NUM>.

The seat part further includes a second reinforcing rod <NUM>. Two ends of the second reinforcing rod <NUM> are respectively connected with the third connecting rod <NUM> and the fourth connecting rod <NUM>; or, two ends of the second reinforcing rod <NUM> are respectively connected with the first cross rod <NUM> and the second cross rod <NUM>; or, one end of the second reinforcing rod <NUM> is connected with the third connecting rod <NUM> or the fourth connecting rod <NUM>, and the other end of the second reinforcing rod <NUM> is connected with the first cross rod <NUM> or the second cross rod <NUM>. The second reinforcing rod <NUM> can not only increase the structure stability of the seat part, but also share the load bearing of the third connecting rod <NUM> and the fourth connecting rod <NUM>, and prevent the third connecting rod <NUM> and the fourth connecting rod <NUM> from deforming and bending caused by a long time sitting pressure, to extend the service life of the deformable crutch.

Specifically, the support part includes a first support rod <NUM>, and one end of the first support rod <NUM> is rotatably connected with the second cross rod <NUM>.

The lock device includes a first connecting pipe <NUM> and a second connecting pipe <NUM> arranged in vertical communication with each other. One end of the second connecting pipe <NUM> is communicated with a middle portion of the first connecting pipe <NUM>. The connecting section of the first connecting pipe <NUM> is provided with a first strip-shaped opening <NUM> along the axial direction of the first connecting pipe <NUM>. The side wall of the second connecting pipe <NUM> is provided with two parallel second strip-shaped openings <NUM> which are vertically connected with the first strip-shaped opening <NUM>. The outer peripheral side of the second connecting pipe <NUM> is further provided with a seat pipe clamp <NUM>. In specific use, the first cross rod <NUM> is inserted into the first connecting pipe <NUM> of the two lock devices, and the third connecting rod <NUM> and the fourth connecting rod <NUM> are respectively inserted into the second connecting pipe <NUM> of the two lock devices, which are tightly locked by the seat pipe clamp <NUM>; the second cross rod <NUM> is inserted into the first connecting pipe <NUM> of a lock device, and the first support rod <NUM> is inserted into the second connecting pipe <NUM>, which is tightly locked by the seat pipe clamp <NUM>.

The present embodiment is a further improvement on the basis of the above-mentioned embodiment <NUM>. In order to better realize the present application, the following structure is particularly adopted:.

The deformable crutch further includes a second support rod <NUM> and a third support rod <NUM>. One end of the second support rod <NUM> and one end of the third support rod <NUM> are respectively rotatably connected with one end of the first support rod <NUM> far from the second cross rod <NUM>, and the other end of the second support rod <NUM> and the other end of the third support rod <NUM> are respectively removably connected with the second cross rod <NUM>. The first connecting rod <NUM> is provided with a first blind hole, and the second connecting rod <NUM> is provided with a second blind hole. The other end of the second support rod <NUM> can also be inserted into and matched with the first blind hole, and the other end of the third support rod <NUM> can also be inserted into and matched with the second blind hole.

As a further improvement, a clamping slot is all respectively provided on a peripheral side wall of the insertion end of the second support rod <NUM> and the third support rod <NUM>. The width of the clamping slot is larger than the wall thickness of the first connecting rod <NUM> and the second connecting rod <NUM>. When used as a stool, the second support rod <NUM> and the third support rod <NUM> are respectively inserted into the first blind hole and the second blind hole, and then the second support rod <NUM> or the third support rod <NUM> are lightly pressed to clamp the pipe wall of the first connecting rod <NUM> or the pipe wall of the second connecting rod <NUM> into the clamping slot; at this time, the second support rod <NUM> and the third support rod <NUM> also have a lock effect on the rotation of the hand-held part, the seat part and the support part, and the structure stability is enhanced.

The second support rod <NUM> and the third support rod <NUM> are rotatably connected with the first support rod <NUM> through an elastic reset mechanism, respectively.

Furthermore, the elastic reset mechanism is a torsion spring, and the torsion spring is provided at a rotatable connection joint of the second support rod <NUM> and the third support rod <NUM> with the first support rod <NUM>. When the torsion spring is in a normal state, one end of the torsion spring is clamped on the first support rod <NUM>, and the other end of the torsion spring is clamped on the second support rod <NUM> or the third support rod <NUM>. At this time, the second support rod <NUM> or the third support rod <NUM> is parallel to the first support rod <NUM>.

Both the second support rod <NUM> and the third support rod <NUM> are rotatably connected with the first support rod <NUM> through the elastic reset mechanism. When used as a crutch, the second support rod and the third support rod can be automatically reset to a position parallel to the first support rod <NUM>, which will not affect the normal walking.

When used as a stool, the second support rod <NUM> and the third support rod <NUM> are inserted into and matched with the first blind hole and the second blind hole, respectively;.

As a further improvement, a plurality of rollers <NUM> are further arranged at the lower portion of the second support rod <NUM> and the third support rod <NUM>. At this time, the crutch is deformed into a sliding stool, which is convenient for carrying.

A sleeve <NUM> is also fixed on the side wall of the first support rod <NUM>. The axial direction of the sleeve <NUM> is parallel to the length direction of the first support rod <NUM>. A control rod <NUM> is inserted into the sleeve <NUM>. The lower end of the control rod <NUM> is provided with a driving wheel <NUM> and an electric motor. The lower end of the control rod <NUM> is provided with a double fork for holding the driving wheel <NUM>. Both sides of the driving wheel <NUM> are rotatably connected with the double fork through a fixedly arranged rotation shaft. The rotation shaft is provided with a transmission gear, and the electric motor output shaft is provided with a driving gear engaged with the transmission gear. The electric motor is fixedly arranged on the control rod <NUM>, and the electric motor drives the driving wheel <NUM>.

As a further improvement, the upper end of the control rod is provided with a handlebar, and the control rod further includes a brake system. The brake system includes a V-brake composed of a brake handle, a brake cable and two brake pads which are connected in sequence. The brake handle is arranged on the upper end of the control rod and is connected with the handlebar, and the two brake pads clamp the driving wheel.

As a further improvement, all the connecting rods are hollow tubular structures with a certain wall thickness, which reduces the weight of the crutch and is portable.

Claim 1:
A deformable crutch, comprising a hand-held part, a seat part, and a support part arranged such that the hand-held part and the seat part are rotatable connected, and the seat part and the support part are rotatable connected, and further comprising a first lock device for locking a rotation angle between the hand-held part and the seat part, and a second lock device for locking a rotation angle between the seat part and the support part,
wherein the hand-held part comprises a handlebar (<NUM>), a first connecting rod (<NUM>), a second connecting rod (<NUM>), and a first cross rod (<NUM>), and one end of the first connecting rod (<NUM>) and one end of the second connecting rod (<NUM>) are respectively connected with two ends of the handlebar (<NUM>), and the other end of the first connecting rod (<NUM>) and the other end of the second connecting rod (<NUM>) are respectively connected with two ends of the first cross rod (<NUM>),
wherein the seat part comprises a third connecting rod (<NUM>), a fourth connecting rod (<NUM>) and a second cross rod (<NUM>), and one end of the third connecting rod (<NUM>) and one end of the fourth connecting rod (<NUM>) are respectively rotatably connected with the first cross rod (<NUM>), and the other end of the third connecting rod (<NUM>) and the other end of the fourth connecting rod (<NUM>) are respectively connected with two ends of the second cross rod (<NUM>),
wherein the support part comprises a first support rod (<NUM>), and one end of the first support rod (<NUM>) is rotatably connected with the second cross rod (<NUM>), and
wherein the crutch it- further comprises a second support rod (<NUM>) and a third support rod (<NUM>), characterized in that one end of the second support rod (<NUM>) and one end of the third support rod (<NUM>) are respectively hinged with one end of the first support rod (<NUM>) far from the second cross rod (<NUM>), and
- the other end of the second support rod (<NUM>) and the other end of the third support rod (<NUM>) are respectively connected with the second cross rod (<NUM>) such that they can be removed, and
- the first connecting rod (<NUM>) is provided with a first blind hole, the second connecting rod (<NUM>) is provided with a second blind hole, and the other end of the second support rod (<NUM>) and the other end of the third support rod (<NUM>) are respectively inserted into and matched with the first blind hole and the second blind hole.