CN207029459U - A kind of travelling aided bicycle brake system - Google Patents

Abstract

A kind of travelling aided bicycle brake system, in the upper end of handrail tube, set and limited block, handle handle, brake handle are played on handle；It is coaxially connected that limited block, the front end of handle handle are played below the upper end of handrail tube, handle handle, on brake handle, handle；Handle handle can be at " lifting " and " pushing " two states；Brake handle connects the upper end of brake cable, the lower end connection brake block of brake cable；The action that brake handle is braked or do not braked by brake cable drive brake block；The preceding catch that limited block front end is played on handle limits the position that rotates down of the brake handle under the pulling force effect of brake cable.Its advantage is：When handle handle lifts, in braking state；Instantly pressure handle hand handle, braking state release, and can also be braked by holding brake handle.1）Improve security；2）Retain brake manipulation custom；3）Cost is controllable.During into braking state, conducting strip will be switched off being powered, and realize that brake powers off.1）Protect motor；2）Simplify operation.

Description

A braking system for a walker

technical field

The utility model belongs to the technical field of booster vehicles, in particular to a braking system of a rollator.

Background technique

At present, China has entered an aging society, and the problem of providing for the elderly needs to be solved urgently. The elderly are weak and have inflexible legs and feet, which brings a lot of inconvenience to their life and travel. The children of these old people, due to their busy work, often do not have a lot of time to accompany and accompany them. Even if there are some fitness facilities around their residences, if there are no auxiliary equipment such as rehabilitation and walking aids suitable for the elderly, these people will not be able to Use these fitness facilities for necessary rehabilitation exercises; if they do not exercise regularly or even lie in bed for a long time, it will cause their muscles to atrophy, gradually lose their ability to move, and make their health even worse. This will lead to greater social problems. At present, rehabilitation wheelchairs are widely used, which are widely used in hospitals and families with disabled elderly people, and are an important tool for transportation and rehabilitation training.

In order to solve the above problems, a Chinese utility model patent with application number 201610572826.4, application date 2016.07.19, and titled "A Medical Rehabilitation Walker" discloses "A Medical Rehabilitation Walker, which is characterized in that it includes A bracket, a telescopic rod, a handle and a brake handle, the telescopic rod is arranged on the bracket, the telescopic rod is provided with a mounting hole, one side of the bracket is provided with a fixing screw, and the mounting hole is threadedly connected with the fixing screw , the handle is set at the end of the telescopic rod, the brake handle is set below the handle, the brake line is installed at the front end of the brake handle, the end of the brake line is fixed on the bracket, and the bottom of the bracket is provided with a ten thousand The steering wheel and the brake pad, the brake pad is connected with the brake line, the brake pad is hinged with the bracket, the front end of the brake pad is equipped with a self-braking spring, the middle part of the bracket is provided with a connecting piece, and the connecting piece is welded to the bracket , a seat cushion is arranged on the connecting piece, and a storage box is arranged under the connecting piece.”. The universal wheel set in this utility model patent keeps sliding easily and effectively saves physical strength; the set brake handle, brake pad and brake line make the walker have a good braking effect and keep the use safe; the set self-braking spring It can keep the brake pads separate from the universal wheels when not braking; the set cushion can be used when walking tired, and the set storage box is convenient for carrying items. It effectively solves the problems of the original walker "no sliding function, laborious operation, single function, and inconvenient use", but it still has the following disadvantages: 1) When the walker goes up and downhill, if the user When you suddenly let go of your hands, the car will slide; 2) The motor is powered by the motor during the walking aid. When entering the braking state, the motor is still powered on, causing the motor to heat up, which will shorten the service life of the motor in some cases, and burn out the motor immediately in severe cases. .

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, and provide a rollator braking system that does not slip and the brakes are powered off.

The technical solution adopted by the utility model to solve the technical problem is: a braking system of a rollator, comprising a handrail tube and a brake line, the brake line is passed through the handrail tube and the upper and lower sides of the brake line The two ends pass through the upper and lower ends of the handrail tube respectively, and it is characterized in that: at the upper end of the handrail tube, a handle upper limit block and a handle handle are arranged; the upper end of the handrail tube, the handle handle Below, a brake handle is set, and the front end of the brake handle is coaxially connected with the front end of the upper spring limit block of the handle and the handle handle; the upper spring limit block of the handle is fixed, and the brake handle, the The handle can be rotated slightly around the axis;

The handle of the handle can be in two states of "lifting" and "pressing down": when there is no external force, it is in the state of "lifting"; The raised piece on the upper part of the handle handle cooperates to define the "lifted" position of the handle handle; when an external force is applied, it is in a "pressed down" state; the "pressed down" position of the grip handle;

The brake handle is connected to the upper end of the brake line, and the lower end of the brake line is connected to a brake pad; the handle handle and the brake handle drive the brake pad through the brake line to perform braking or non-braking actions;

The front block at the front end of the upper spring limit block of the handle limits the downward rotation position of the brake handle under the pulling force of the brake wire.

Preferably, the two states of "up" and "down" of the handle handle are realized by the following structure: a self-braking spring is connected between the handle handle and the handrail pipe.

Preferably, the lower end of the brake line is connected to the brake pad through a brake mechanism; the brake mechanism includes an active piece and a reset spring, the upper part of one end of the active piece is connected to the brake line, and the lower part is connected to the reset spring. Extension spring; the other end of the active piece is connected with the brake pad through a pin shaft.

Preferably, a positive electrode of a conductive sheet is arranged next to the brake pad; a negative electrode of a conductive sheet is arranged at a corresponding position on the brake pad, and the positive electrode of the conductive sheet and the negative electrode of the conductive sheet are positioned at the non-braking position of the brake pad. state, that is, when the brake pads are popped up, they are electrically connected to each other.

Preferably, both the positive electrode of the conductive sheet and the negative electrode of the conductive sheet are fixed by non-conductive nylon screws.

Preferably, the upper limit block of the handle is welded to the upper end of the handrail tube; a spindle bolt is inserted at the front end of the limit block for the handle upper, and the front end of the brake handle and the front end of the handle handle are sleeved The brake handle and the handle handle can be rotated slightly around the main shaft bolt;

The front end of the brake handle is provided with a first notch, and the middle part is provided with a horizontal shaft; one end of the self-braking spring is fixed on the horizontal shaft, and the other end passes through the first notch and is fixed on the handrail tube;

A second notch is set on the lower block at the lower part of the upper spring limit block of the handle, and the brake handle can be rotated up and down through the notch, that is, to perform braking or non-braking action.

Compared with the prior art, the beneficial effect of the utility model is that: when the handle of the utility model is not pressed down, the system is in the braking state; when the handle is pressed down, the braking state is released, and the brake handle can be used, which can Hold the brake lever firmly. In this way, it is possible to achieve: 1) Improve safety; even if the rollator suddenly releases his hands when going up and downhill, the vehicle will not slip. 2) Keep the habit of brake control; when using the rollator with the utility model, after pressing down the handle handle, hold the brake handle tightly when braking, and then use it like a common brake system. 3) The cost is controllable; there is no need to add additional brake lines, and the system can be realized by using only one brake line for each handlebar. Moreover, when the utility model enters the braking state, the conductive sheet will be disconnected from the power supply, and the power will be cut off immediately after braking. In this way, it is possible to: 1) protect the motor; for example, a slow-speed electric rollator is powered by the motor when driving, and the motor needs to stop when braking. 2) Simplify the operation; there is no need to deliberately turn off the power of the motor. When you let go of your hand, it will enter the braking state and the power will be cut off. When you hold it by hand, you can realize slow-speed electric walking.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model applied to a rollator;

Fig. 2 is a half-sectional view of the three-dimensional structure when the handle handle on the top of the brake line is not pressed (self-braking state) in the utility model;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is a half-sectional view of the three-dimensional structure when the handle handle on the top of the brake line is pressed (no brake state) in the utility model;

Fig. 5 is a side view of Fig. 4;

Fig. 6 is a half-sectional view of the three-dimensional structure when the handle handle on the upper part of the brake line is pressed and the brake handle is lifted (braking state) in the utility model;

Fig. 7 is a side view of Fig. 6;

Fig. 8 is a three-dimensional structural schematic view of the brake pad at the lower part of the brake line in the braking state in the present invention;

Fig. 9 is a three-dimensional structural schematic view of the brake pad at the lower part of the brake line in the utility model when it is in a non-braking state;

Fig. 10 is a schematic diagram of the handle handle, brake handle and its limit structure on the upper part of the brake line in the utility model;

FIG. 11 is a rear view of FIG. 10 .

Labeled in the figure:

1. Handrail tube; 2. Brake line; 3. Handle upper limit block; 31. Upper block; 32. Lower block; 321. Second notch;

4. Handle handle; 41. Protruding piece; 42. First notch; 43. Horizontal shaft; 44. Front block; 5. Brake handle;

6. Spindle bolts; 7. Brake pads; 8. Brake mechanism; 81. Active piece; 82. Reset spring; 83. Pin shaft;

91, the positive pole of the conductive sheet; 92, the negative electrode of the conductive sheet; 10, the self-braking spring.

detailed description

Below in conjunction with accompanying drawing embodiment, the utility model is described further:

Embodiment one

As shown in Figures 1 to 11, a braking system for a rollator includes a handrail tube 1 and a brake line 2. The brake line 2 is threaded in the handrail tube 1, and the upper and lower ends of the brake line 2 respectively pass through the handrail tube. The upper and lower ends of 1; at the upper end of the handrail tube 1, set the upper end of the handrail tube 1, set the limit block 3 and the handle handle 4; set the brake handle 5 at the upper end of the handrail tube 1, below the handle handle 4; The block 3 is welded on the upper end of the handrail tube 1; the front end of the handle upper limit block 3 is inserted horizontally with the spindle bolt 6, the front end of the brake handle 5 is sleeved in the front end of the handle handle 4, and the front end of the handle handle 4 is sleeved in the handle In the front end of the upper limit block 3, the front end of the brake handle 5, the front end of the handle handle 4, and the front end of the handle upper limit block 3 are coaxially connected by the main shaft bolt 6; the brake handle 5 and the handle handle 4 can be wound around the main shaft bolt 6 Make a small rotation;

The handle handle 4 can be in two states of "lifting" and "pressing down": when there is no external force, the handle handle 4 is in the "lifting" state; The raised piece 41 on the top of the handle handle 4 cooperates to limit the upward "lifting" position of the handle handle 4; when an external force is applied, the handle handle 4 is in a "pressed down" state; The lower catch 32 of the handle 4 defines the "press down" position; the front end of the handle 4 is provided with a first notch 42, and the middle part is provided with a cross shaft 43; one end of the self-braking spring 10 is fixed on the cross shaft 43, and the other end is passed through The first notch 42 is fixed on the handrail pipe 1; the front block 44 at the front end of the handle handle 4 limits the position where the brake handle 5 rotates downward under the pulling force of the brake wire 2.

On the lower catch 32 of the spring-limiting block 3 bottom on the handle, a second notch 321 is set, and the brake handle 5 can pass through the second notch 321 to rotate up and down slightly, that is, to brake or not to brake.

The upper end of the brake wire 2 is fixed in the middle of the brake handle 5, and the lower end of the brake wire 2 is connected to the brake pad 7; the handle handle 4 and the brake handle 5 drive the brake pad 7 through the brake wire 2 to perform braking or non-braking actions; the brake handle 5 is pulled up , the brake pad 7 brakes; when the brake handle 5 is released, the brake pad 7 does not brake;

The lower end of the brake wire 2 is connected to the brake pad 7 through the brake mechanism 8; the brake mechanism 8 includes the active plate 81, the reset extension spring 82, and the pin shaft 83. The inner surface of one end of the active plate 81 is connected with the brake line 2 above, and the outer surface of the end The side is connected to the return tension spring 82 located below it; the other end of the active plate 81 is connected to the brake pad 7 through the pin shaft 83; when the brake line 2 pulls the active plate 81 upward, the active plate 81 drives the brake pad 7 downward through the pin shaft 83 Move to tire, brake; After brake wire 2 is unclamped, active piece 81 returns under the effect of reset tension spring 82, and active piece 81 drives brake pad 7 upwards to return by bearing pin 83, leaves tire, does not brake.

Next to the brake pad 7, the positive pole 91 of the conductive pad is set; the negative pole 92 of the conductive pad is arranged at the corresponding position on the brake pad 7, and the positive pole 91 of the conductive pad and the negative pole 92 of the conductive pad are in the non-braking state at the brake pad 7, that is, on the brake pad 7 When returning to the position, they are electrically connected to each other; the positive electrode 91 of the conductive sheet and the negative electrode 92 of the conductive sheet are both fixed by non-conductive nylon screws.

The working principle and working process of the utility model are as follows:

As shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11, there are multiple states as follows:

1. Self-braking state:

When the handle handle 4 is not subject to external pressure, the handle handle 4 is lifted to the angle limited by the upper limit block 3 of the handle under the action of the self-braking spring 10; , to overcome the downward pulling force of the brake line 2. At this time, the elastic force of the return tension spring 82 in the brake mechanism 8 is overcome, and the active plate 81 (brake bean) connected to the brake line 2 drives the brake pad 7 to rotate at a certain angle with the pin shaft 83 as the center (that is, the brake pad axis). , the brake pad 7 near the tire end contacts the tire brake. Simultaneously, the negative electrode 92 of the conductive sheet fixed by the nylon screw is separated from the conductive sheet 91 fixed by the nylon screw, and the power supply is disconnected.

2. The state when the handle 4 is pressed down:

When the handle 4 is subjected to external pressure (pressed down by hand), the action of the self-braking spring 10 is overcome by the downward pressure, and the handle 4 descends at a certain angle along the main shaft bolt 6; The brake cable pulls down. At this time, the tension of the brake pad reset spring 82 pulls back the brake wire 2, and the active pad 81 (brake bean) connected to the brake wire 2 drives the brake pad 7 to rotate with the pin shaft 83 as the center (that is, the brake pad axis) to a certain extent. Angle, the distance between the brake pad 7 near the tire end and the tire is generated, and the braking state is released. Simultaneously, the negative electrode 92 of the conductive sheet contacts the positive electrode 91 of the conductive sheet, the power is turned on, and the motor runs.

3. The state when the handle 4 is pressed down and the brake handle 5 is lifted:

When the handle 4 is subjected to external pressure (pressed down by hand), the action of the self-braking spring 10 is overcome by pressing down, and the handle 4 is lowered by a certain angle; Pulling, but due to manual braking, the brake handle 5 is lifted, and the elastic force of the reset extension spring 82 of the brake pad 7 is overcome. The active pad 81 (brake bean) connected to the brake line 2 drives the brake pad 7 to rotate at a certain angle with the pin shaft 83 as the center (ie the brake pad axis), and the brake pad 7 near the tire end contacts the tire brake. Simultaneously, the negative electrode 92 of the conductive sheet is separated from the positive electrode 91 of the conductive sheet, the power supply is disconnected, and the motor stops.

4. Parking state: that is, self-braking state.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the utility model still belong to the protection scope of the technical solution of the utility model.

Claims (6)

1. a kind of travelling aided bicycle brake system, including a handrail tube, a brake cable, the brake cable be arranged in the handrail tube and The upper/lower terminal of the brake cable passes the upper/lower terminal of the handrail tube respectively, it is characterised in that：In the handrail tube Upper end, set and limited block, leader's handle are played on leader；Below the upper end of the handrail tube, the handle handle, one is set Brake handle, the front end of the brake handle with the handle play limited block, the handle handle front end it is coaxially connected；Institute State bullet limited block on handle to fix, the brake handle, the handle handle can slightly rotate around axle；

The handle handle can be at " lifting " and " pushing " two states：During without external force, in " lifting " state；Now, by The tabs of upper stop piece and the handle handle upper portion that limited block top is played on the handle coordinate, and limit the handle handle " lifting " position；When applying external force, in " pushing " state；Now, by the lower stop piece of bullet limited block bottom on the handle Limit " pushing " position of the handle handle；

The brake handle connects the upper end of the brake cable, and the lower end of the brake cable connects a brake block；The handle hand The action that handle, the brake handle are braked or do not braked by the brake cable drive brake block；

The preceding catch restriction brake handle that limited block front end is played on the handle is downward under the pulling force effect of brake cable The position of rotation.

2. travelling aided bicycle brake system according to claim 1, it is characterised in that：" the lifting " of the handle handle and " under Pressure " two states are realized by following structure：One is connected from brake spring with the handrail tube in the handle handle.

3. travelling aided bicycle brake system according to claim 2, it is characterised in that：The lower end of the brake cable passes through a brake Mechanism connects the brake block；The braking mechanism includes a rotating plate, reset tension spring, one end top connection of the rotating plate The brake cable, bottom connect the reset tension spring；The other end of the rotating plate is connected by a bearing pin with the brake block.

4. the travelling aided bicycle brake system according to Claims 2 or 3, it is characterised in that：On the side of the brake block, set One conducting strip positive pole；Corresponding position sets a conducting strip negative pole on the brake block, and the conducting strip positive pole is led with described Electric piece negative pole is electrically connected to each other when the brake block is in not braking state when the brake block is upspring.

5. travelling aided bicycle brake system according to claim 4, it is characterised in that：The conducting strip positive pole and the conducting strip Negative pole is fixed by nonconducting nylon screw.

6. travelling aided bicycle brake system according to claim 5, it is characterised in that：Limited block is played on the handle and is welded on institute State the upper end of handrail tube；Limited block front end is played on the handle and plugs a principal axis bolt, the front end of the brake handle with it is described The front end of handle handle, it is set on the handle and plays in limited block front end and, the brake coaxially connected by the principal axis bolt Handlebar, the handle handle can slightly be rotated around the principal axis bolt；

The front end of the brake handle sets the first notch, and middle part sets a transverse axis；It is described to be fixed on institute from brake spring one end State on transverse axis, the other end passes through to be fixed on the handrail tube described in the first notch；

On the lower stop piece that limited block bottom is played on the handle, the second notch is set, the brake handle can pass through the notch Rotate up and down, that is, the action braked or do not braked.