CN110403803A - A seat and brake linkage type walker - Google Patents

Abstract

The invention discloses a seat-brake linkage type walker, comprising a walker frame body, a walking wheel is installed on the bottom of the walker frame body, the walking wheel is provided with a braking mechanism, and the walker frame body is mounted with a walking wheel. Seat, the seat and the walker frame are rotatably connected to form a rotary seat structure, and the seat is rotated so that it has two states of retraction and deployment; the rotational connection between the seat and the walker frame is a rotary In the center of the seat, a rotation swing part is formed on the side located at the rotation center of the seat, and the rotation swing part is connected with the braking mechanism through a connecting wire. The invention makes the seat and the brake interlock, which ensures that the user must put down the seat if he wants to sit on the walker to rest, and the walker must be in the brake parking state when the seat is put down, which improves the safety and reliability of use. reduce the chance of slipping due to forgetting to lock the wheels.

Description

A seat and brake linkage type walker

technical field

The invention belongs to the technical field of walkers, and in particular relates to a seat-brake linkage type walker.

Background technique

The structure of a common four-wheel walker is shown in the utility model patent publication No. CN2496446Y, including a handbrake, a seat cushion, a braking action point, a rear wheel and a front universal wheel, etc. Usually, the elderly can push the walker to assist walking, and when the emergency needs to brake, they can press the handbrake, and the force can be transmitted to the braking point to brake the rear wheel. When you need to sit down and rest, you need to pull down the handbrake, so that the rear wheel is in a braking state for a long time, to ensure the stability of the walker when you sit down, and to prevent falls.

This kind of four-wheel walker requires the elderly to manually lock the wheels to prevent the wheels from sliding, and the elderly group generally has poor memory. When the elderly want to sit down and rest, they tend to forget to pull down the handbrake, and the wheels are still in the driving state. The rear walker is very easy to slide backward and fall, with disastrous consequences.

Other forms of braking for four-wheel walkers are also disclosed in the prior art.

For example, the utility model patent with the publication number CN202724206U discloses a walker, which includes a frame, a walking wheel, a support handle and a manual brake mechanism. The frame includes a pair of front support rods and a pair of rear support rods. The two front support rods The middle parts of the two rear support rods are fixedly connected with each other through the front cross bar, and the middle parts of the two rear support rods are fixedly connected with each other through the rear cross rod. A seat plate is arranged on the front cross rod and the rear cross rod. The lower end of the support rod is provided with a self-weight braking mechanism, and a foot is formed at the bottom of the front support rod or the rear support rod. In the unloaded state of the walker, the self-weight braking mechanism drives the foot to lift up and leave the ground. When the vehicle is manned, the self-weight braking mechanism drives the feet to touch the ground to form automatic braking. Compared with the prior art, the utility model has the advantages that the overall structure of the walker is relatively simple, and the self-weight of the human body is used for braking, which can ensure the safety and reliability of the walker's braking under the manned state.

For example, the utility model patent with the publication number CN201798883U discloses a walker with safety braking performance, including a wheelchair, the wheelchair is composed of a chair frame and a walking wheel mechanism connected to the support legs of the chair frame. A lift spring is arranged longitudinally between the roller shafts in the walking wheel mechanism. One end of the lift spring acts on the support leg, and the other end acts on the roller shaft, so that an elastic connection is formed between the support leg and the roller shaft, and the roller shaft and the roller are in phase. Connection; feet for braking are extended from the support legs to the ground. When the wheelchair is unloaded, the rollers contact the ground, and the lift spring lifts the feet through the support legs and hangs relative to the ground. When the wheelchair is fully loaded In the state, the foot touches the ground to form a self-weight braking mechanism. When practicing walking, the spring lifts the wheelchair frame, and the feet are suspended on the ground. When resting and riding, the body's own weight is used to make the feet touch the ground to form automatic braking. The solution overcomes the deficiencies of the existing brake design of the same kind of walker, and ensures the safety of the brake of the walker to the greatest extent.

For example, the invention patent with the publication number CN102247262B discloses an automatic braking device for a walker in the technical field of a walker, including an infrared sensor circuit, a triode switch circuit, a power supply and two electromagnetic brakes. In the present invention, the distance between the user of the walker and the walker can be sensed through the infrared sensor, and when the distance is within a certain range, it is normal assisted walking, and the braking device is not triggered. When the distance exceeds a certain range, it is determined as an abnormal use situation, and the user is no longer near the walker, and the automatic braking device is triggered immediately to lock the walker to prevent accidents.

The technical solutions of the above announcement numbers CN202724206U and CN201798883U use self-weight brakes, and the technical solutions of the announcement number CN102247262B use infrared induction brakes, which can improve safety and reliability to a certain extent compared to handbrakes, but there are still defects of slipping during use: such as The self-weight brake is in an unbraking state when the user is not riding, and the walker may slip during the user's sitting process, and it is difficult to determine the self-weight parameter of the brake; for example, infrared induction brakes are easily mistaken by debris Triggered, cannot effectively sense the distance between the user of the walker and the walker, and cannot accurately judge the normal use or abnormal use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a seat-brake linkage type walker.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A seat and brake linkage type walker, comprising a walker frame body, a walking wheel is installed at the bottom of the walker frame body, the walking wheel is provided with a braking mechanism, a seat is installed on the walker frame body, and the The seat and the walker frame are rotatably connected to form a rotary seat structure, and the seat is rotated to have two states of retraction and deployment;

The rotational connection between the seat and the walker frame is the center of rotation, and a rotational swing part is formed on the seat on the side located at the center of rotation, and the rotational swing part is connected with the brake mechanism through a connecting line;

When the seat is rotated from the retracted state to the unfolded state, the rotating and swinging part of the seat drives the connecting wire to act as a braking mechanism, so that the braking mechanism locks the traveling wheels; when the seat is rotated and reset from the unfolded state to the retracted state, the rotation of the seat The swing part is reset, the force of the connecting line on the brake mechanism disappears, and the brake mechanism releases the traveling wheel;

The walker frame is mainly composed of a front bracket and a rear bracket. The front bracket and the rear bracket form a herringbone frame structure. The upper end of the front bracket is provided with a handle extending backwards, and a handbrake is installed at the handle. The connecting line is also connected with the brake mechanism;

The upper end of the rear bracket is hingedly connected to the front bracket, so that the lower end of the rear bracket can be closed and opened relative to the front bracket, and an opening support structure is connected to the lower part of the rear bracket and the front bracket.

The open support structure includes two mutually hinged support rods, and the other ends of the support rods are hinged with the front bracket and the rear bracket respectively;

The opening support structure has two states of opening and folding. When the opening support structure rotates from the folded state to the opened state, the mutual hinge parts of the two support rods move downward, and the two support rods are opened to each other to realize the front facing The open support of the bracket and the rear bracket; when the open support structure rotates from the open state to the folded state, the mutual hinge parts of the two support rods move upward, and the two support rods fold each other to realize the mutual connection between the front support and the rear support. fold.

There is also an opening locking device between the two support rods. The opening locking device includes a rotation limit part set on one of the support rods, and the rotation limit part is located at the rotation path of the other support rod. After the open support structure is in the open state, the mutual hinge parts of the two support rods protrude downward, so that the other support rod abuts and cooperates with the rotation limiting part.

The frame body of the walker is also provided with a seat limiting portion, and when the seat is rotated from the retracted state to the unfolded state, the seat limiting portion abuts and cooperates with the seat to support the seat.

The rotating connection part of the seat and the walker frame body is located on the front bracket, and the seat limiting part is installed on the rear bracket.

When the seat is rotated in the unfolded state, the seat is in a horizontal position.

The traveling wheel includes a front universal wheel mounted on the front bracket and a rear wheel mounted on the rear bracket, and the braking mechanism is mounted on the rear wheel.

The brake mechanism includes a brake frame, the middle part of the brake frame is hingedly connected with the rear bracket, the front part of the brake frame is connected with the connecting line, the rear part of the brake frame is installed with a brake pad on the side of the rear wheel, and the rear part of the brake frame is connected to the rear wheel. A tension spring is also connected between the rear frames; when walking, the brake pad at the rear of the brake frame is separated from the rear wheel under the action of the tension spring. The brake pads touch the rear wheel.

Beneficial effects of the present invention:

According to the invention, the seat and the brake are linked together. When the seat is rotated from the retracted state to the unfolded state, the rotating and swinging part of the seat drives the connecting wire to act as the braking mechanism, so that the braking mechanism locks the traveling wheel and realizes the braking and parking of the walker. Stop; when the seat is rotated and reset from the unfolded state to the retracted state, the rotating and swinging part of the seat is reset, and the force of the connecting line on the braking mechanism disappears, so that the braking mechanism releases the traveling wheel, which is convenient for the walker to walk, thus ensuring If the user wants to sit on the walker to rest, he must put down the seat, and if the seat is put down, the walker must be in the parking state, which improves the safety and reliability of use and reduces slipping due to forgetting to lock the wheels. probability.

Description of drawings

1 is a schematic structural diagram of the seat in a stowed state according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the seat in the unfolded state according to the embodiment of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

As shown in FIG. 1 to FIG. 2 , a seat-brake linkage type walker of this embodiment includes a walker frame body, a walking wheel is installed on the bottom of the walker frame body, and the walking wheel is provided with a braking mechanism , a seat 6 is installed on the frame of the walker.

The walker frame is mainly composed of a front bracket 1 and a rear bracket 2, and the front bracket 1 and the rear bracket 2 have a herringbone frame structure. The traveling wheels include a front universal wheel 11 installed on the front bracket 1 and a rear wheel 22 installed on the rear bracket 2 , and the brake mechanism is installed at the rear wheel 2 . A handle 8 extending backwards is installed at the upper end of the front bracket 1 , and a handbrake 9 is installed at the handle 8 .

The upper end of the rear bracket 2 is hingedly connected to the front bracket 1 , so that the lower end of the rear bracket 2 can be closed and opened relative to the front bracket 1 .

The unfolding support structure includes two mutually hinged support rods 3 and 4 , and the other ends of the support rods 3 and 4 are hinged with the front bracket 1 and the rear bracket 2 respectively. The opening support structure has two states of opening and folding. When the opening support structure rotates from the folded state to the opened state, the mutual hinge parts of the two support rods 3 and 4 move downward, and the two support rods 3 and 4 are opened to each other. open to realize the open support for the front support 1 and the rear support 2; when the open support structure rotates from the open state to the folded state, the mutual hinge parts of the two support rods 3 and 4 move upward, and the two support rods 3 and 4 move upward. 4. Fold each other to realize the mutual folding of the front bracket 1 and the rear bracket 2.

And there is also an opening locking device between the two support rods. The opening locking device includes a rotation limit portion 5 provided on one of the support rods 3 , and the rotation limit portion 5 is located in the path of the rotation 4 of the other support rod 4 . When the open support structure is in the open state, the mutual hinge parts of the two support rods 3 and 4 protrude downward, so that the other support rod 4 is in abutment with the rotation limit part 5 .

The seat 6 is rotatably connected with the front bracket 1 of the walker frame to form a rotary seat structure, and the seat 6 is rotated to have two states of retraction and deployment.

The rotational connection between the seat 6 and the front bracket 1 of the walker frame is the center of rotation. The seat 6 forms a rotational swinging portion on the side of the rotational center. The rotational swinging portion is connected to the braking mechanism through a connecting wire.

When the seat 6 is rotated from the stowed state to the unfolded state, the rotating and swinging part of the seat 6 drives the connecting wire to act as a brake mechanism, so that the brake mechanism locks the traveling wheels; when the seat 6 is rotated and reset from the unfolded state to the stowed state, the seat The rotating and swinging part of the chair 6 is reset, the force of the connecting wire on the braking mechanism disappears, and the braking mechanism releases the traveling wheels.

The rear bracket 2 of the walker frame is also provided with a seat limiter 7. When the seat 6 is rotated from the retracted state to the unfolded state, the seat limiter abuts and cooperates with the seat to realize the matching. Seat support. In this embodiment, when the seat is rotated in the unfolded state, the seat 6 is in a horizontal position, which is convenient for sitting down.

In this embodiment, the brake mechanism includes a brake frame 10 , the middle part of the brake frame 10 is hingedly connected to the rear bracket, the front part of the brake frame 10 is connected to the connecting line, and the rear part of the brake frame 10 is installed with a brake pad 12 on the side facing the rear wheel , and a tension spring is also connected between the rear part of the brake frame 10 and the rear frame, which is not shown in the figure; when walking, the brake pad 12 at the rear of the brake frame 10 is separated from the rear wheel 12 under the action of the tension spring, and the brake At this time, the connecting wire acts to pull up the front part of the brake frame 10, so that the brake pads 12 at the rear part of the brake frame 10 contact the rear wheel to complete the braking.

In the present invention, the seat 6 is linked with the braking mechanism. When the seat 6 rotates from the retracted state to the unfolded state, the rotating and swinging part of the seat 6 drives the connecting wire to act as the braking mechanism, so that the braking mechanism locks the traveling wheels and realizes the walking aid. When the seat 6 is rotated and reset from the unfolded state to the retracted state, the rotating and swinging part of the seat 6 is reset, and the force of the connecting line on the braking mechanism disappears, so that the braking mechanism releases the traveling wheel, which is convenient for walking. It ensures that the user must put down the seat if he wants to rest on the walker, and when the seat is put down, the walker must be in the state of braking and parking, which improves the safety and reliability of use.

The design of the present invention is more friendly to the elderly, and the probability of the elderly sitting down and falling due to forgetting to pull the handbrake when using the product is greatly reduced.

The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced without departing from the Any modification or partial replacement of the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", etc. are based on those shown in the accompanying drawings The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated for a specific orientation, and therefore should not be construed as protecting the content of the present invention limits.

Claims (8)

1. a kind of seat and linkage brake formula walk helper, including walk helper frame body, the bottom of walk helper frame body are equipped with traveling wheel, Traveling wheel is equipped with braking mechanism, is equipped with seat on walk helper frame body, it is characterised in that: the seat and walk helper frame body rotate Connection forms rotary seat structure, and seat rotation, which makes it have, packs up and be unfolded two states；

It is rotation center with walk helper frame body rotation junction on seat, is revolved on seat in the side formation for being located at its rotation center Turn swing part, rotary oscillation portion is connect by connecting line with braking mechanism；

When seat is rotated by collapsed state to unfolded state, the rotary oscillation portion of seat drives connecting line to act on braking mechanism, makes Braking mechanism locking traveling wheel；When seat is by unfolded state spinning reduction to collapsed state, the rotary oscillation portion of seat resets, even The active force of pair of connecting wires braking mechanism disappears, and braking mechanism is made to decontrol traveling wheel；

The walk helper frame body is mainly made of fore-stock and after-poppet, and fore-stock and after-poppet form chevron shaped frame structure, The handle to extend back is installed at the upper end of fore-stock, parking brake is installed at handle, parking brake by connecting line also with braking machine Structure connection；

The upper end articulated connection of after-poppet is propped up afterwards on fore-stock, making after-poppet lower end that can draw close and open relative to fore-stock Opening support construction is connected at the lower part of frame and fore-stock.

2. a kind of seat according to claim 1 and linkage brake formula walk helper, it is characterised in that: the opening support knot Structure includes two support rods being hinged, and the other end of support rod is hinged with fore-stock and after-poppet respectively；

Opening support construction has opening and folds two states, is rotated by folded state to open configuration when opening support construction When, the portion of being hinged of two support rods moves downward, and two support rods mutually open, and realizes to the opening to fore-stock and after-poppet Support；When opening support construction and being rotated by open configuration to folded state, the portion of being hinged of two support rods is moved upwards, and two Support rod mutually folds, and realizes to the mutual folding to fore-stock and after-poppet.

3. a kind of seat and linkage brake formula walk helper stated according to claim 2, it is characterised in that: between two support rod It is additionally provided with opening locking device, opening locking device includes being disposed therein the rotary stopper portion being arranged on a support rod, rotation Turn limiting section to be located at the path of another support rod rotation, after opening support construction is in open configuration, the phase of two support rods Mutual articulated section is downwardly projecting, contacts another support rod with rotary stopper portion.

4. a kind of seat according to claim 1-3 and linkage brake formula walk helper, it is characterised in that: described to help It is additionally provided with seat limiting section on row device frame body, when seat is rotated by collapsed state to unfolded state, seat limiting section and seat It contacts, realizes the support to seat.

5. a kind of seat according to claim 4 and linkage brake formula walk helper, it is characterised in that: the seat and walk help The rotation of device frame body turns connecting portion on fore-stock, and seat limiting section is mounted on after-poppet.

6. a kind of seat and linkage brake formula walk helper according to claim, it is characterised in that: at the seat rotation When unfolded state, seat is in a horizontal position.

7. a kind of seat according to claim 1 and linkage brake formula walk helper, it is characterised in that: the traveling wheel includes The preceding universal wheel being mounted on fore-stock and the rear-wheel being mounted on after-poppet, braking mechanism are mounted at rear-wheel.

8. a kind of seat according to claim 1 and linkage brake formula walk helper, it is characterised in that: the braking mechanism packet Brake frame is included, the middle part of brake frame and after-poppet are articulated and connected, and the front of brake frame is connect with connecting line, the rear portion court of brake frame Brake block is installed to rear-wheel side, and is also connected with tension spring between the rear portion and Rear frame of brake frame；When walking, after brake frame The brake block in portion separates under tension spring effect with rear-wheel, and when brake, connecting line acts on pull-up brake frame front, makes brake frame rear portion Brake block contact rear-wheel.