CN216455710U

CN216455710U - Speed reduction braking device for walking aid vehicle

Info

Publication number: CN216455710U
Application number: CN202123045894.0U
Authority: CN
Inventors: 卢永华
Original assignee: Foshan Huacantong Medical Equipment Co ltd
Current assignee: Foshan Huacantong Medical Equipment Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-10
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a speed reduction braking device for a walking-assistant vehicle, which comprises a brake component, a brake cable connecting hole and a sleeve hole, wherein the brake cable connecting hole is connected with the brake component, the sleeve hole is connected with the brake component, the brake cable connecting hole is used for connecting a brake cable of the walking-assistant vehicle, the sleeve hole is used for installing the speed reduction braking device on the walking-assistant vehicle, the brake component comprises a braking part and a speed reduction part, the speed reduction part can be slidably installed in the braking part under the pulling action of the brake cable, when the speed reduction part reaches a descending limit position, the speed reduction part protrudes outwards relative to the braking part, so that the speed reducer contacts with the wheels of the rollator in advance to reduce the current speed of the rollator, when the speed reducer reaches the upper limit position, the speed reducer retracts into the braking part and is flush with the end face of the braking part close to the wheel direction, so that the speed reducer and the braking part are jointly contacted with the wheel to brake the rollator. The utility model discloses simple structure, low cost have easy maintenance and longer life.

Description

Speed reduction braking device for walking aid vehicle

Technical Field

The utility model relates to a speed reduction arresting gear technical field that the wheel was used, concretely relates to speed reduction arresting gear that helps driving vehicle.

Background

The walking aid vehicle is a good auxiliary walking tool for the old or other people with inconvenient legs and feet, and can greatly improve the life convenience of the people. Users often need to slow down their walking and full brake stops while using a walker, such as when walking downhill or in other places where speed limitation is desired (e.g. indoors), to slow down the speed of the walker. The conventional wheel is usually provided with a speed reducer or other braking devices for realizing speed reduction and braking, and although the speed reducer or other braking devices can well realize speed reduction and braking effects, the device is usually high in cost and difficult to maintain due to the fact that the device is complex in structure and provided with a plurality of parts, and even if the device can be maintained, the maintenance cost is high. Therefore, a deceleration braking device with simple structure, low cost and good practicability is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a speed reduction brake device that helps driving, its problem that can solve the speed reduction brake device that provides a simple structure and low cost is provided to the purpose of the utility model.

Realize the technical scheme of the purpose of the utility model is that: a speed reduction brake device for a walk-assisting vehicle, which comprises a brake component, a brake cable connecting hole and a sleeve hole, wherein the brake cable connecting hole is connected with the brake component, the sleeve hole is connected with the brake component,

the brake cable connecting hole is used for connecting a brake cable of the rollator,

the sleeving hole is used for installing the speed reducing brake device on the walking aid vehicle,

the brake assembly comprises a brake component and a speed reducing component, the speed reducing component is arranged in the brake component in a sliding or telescopic mode under the pulling action of a brake cable, the speed reducing component protrudes outwards relative to the brake component when reaching a descending limit position so that the speed reducing component is in contact with the wheels of the rollator in advance to reduce the current speed of the rollator, when reaching an ascending limit position, the speed reducing component retracts to the inside of the brake component and is flush with the end face of the brake component close to the direction of the wheels so that the speed reducing component and the brake component are in contact with the wheels together to brake the rollator,

the lower limit position refers to the position of the speed reducer when the brake cable is completely released, and the upper limit position refers to the position of the speed reducer when the brake cable is completely tensioned.

Further, the reduction member reaches the descending limit position under its own weight.

Furthermore, the brake assembly is arranged on the transverse block, the brake cable connecting hole is dug in the crossing and penetrates through the transverse block, and the sleeving hole is arranged at one end of the crossing.

Further, the brake assembly is removably mounted to the cross block.

Further, the transverse block and the sleeving hole are of an integrated structure.

Furthermore, the braking part is a block-shaped braking block, and the speed reducer is a cylindrical braking rod.

Furthermore, a first through hole which longitudinally penetrates through the brake block is dug in the brake block, the first through hole is transversely arranged along the brake block, movable grooves are dug on the inner walls of two sides of the brake block positioned in the first through hole, the movable grooves extend along the longitudinal direction of the brake block, two steps are arranged on the inner walls of the other two sides of the brake block positioned in the first through hole, the steps extend along the transverse direction of the brake block, a second through hole is formed in the space between the first through holes of the two steps, the second through hole is positioned on one side far away from the transverse block, the brake rod is positioned in the second through hole, and two ends of the brake rod are slidably installed in the movable grooves so that the brake rod can move along the movable grooves,

when the brake rod reaches the descending limit position, two ends of the brake rod are in contact with the bottom end of the movable groove, and when the brake rod reaches the ascending limit position, two ends of the brake rod are located in the movable groove and far away from the bottom end of the movable groove.

Furthermore, the brake assembly also comprises a spring, a connecting piece and a pressing block, the pressing block is hung on the step, so that the pressing block can slide along the longitudinal direction of the first through hole, the pressing block is used for limiting the brake rod to prevent the brake rod from being separated from the movable groove,

one end of the connecting piece is fixedly connected with the pressing block, the other end is connected with the transverse block, so that the brake component can be detachably arranged on the transverse block,

one end of the spring is fixedly arranged on the pressing block, and the other end of the spring extends into the limiting groove of the transverse block.

Furthermore, the connecting piece is a screw, and two ends of the connecting piece are respectively in threaded connection with the pressing block and the transverse block.

Further, dig in the horizontal piece and be equipped with the mounting groove, brake subassembly installs in the mounting groove, and the spacing groove is located the mounting groove, and the brake block contacts with the inner wall of mounting groove, and when the brake stick reachd ascending extreme position, the inner wall according to briquetting and mounting groove contacted, when the brake stick reachd descending extreme position, the inner wall according to the briquetting and keeping away from the mounting groove and be located first through-hole.

The utility model has the advantages that: the utility model has the advantages of simple structure, low cost, and the practicality is very strong, can satisfy well including the vehicle speed reduction braking control demand that helps including the driving, still has easy maintenance and longer life simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view at another viewing angle of the present invention;

fig. 3 is a schematic structural view at another viewing angle of the present invention;

FIG. 4 is a schematic view of the brake assembly shown with the brake assembly removed;

FIG. 5 is a schematic structural view of the brake assembly;

FIG. 6 is a schematic structural view of the brake assembly with one spring removed;

FIG. 7 is a schematic view of the structure from another perspective;

FIG. 8 is a schematic illustration of the construction of portions of the brake assembly shown with parts removed;

FIG. 9 is a schematic illustration of the construction of portions of the brake assembly shown with parts removed;

FIG. 10 is a schematic illustration of the construction of portions of the brake assembly shown with parts removed;

FIG. 11 is a schematic view of the present invention applied to a frame of a rollator;

in the figure, 1-transverse block, 11-limiting groove, 12-connecting hole, 13-mounting groove, 2-brake cable connecting hole, 3-sleeving hole, 4-brake component, 41-brake rod, 42-brake block, 43-spring, 44-connecting piece, 45-pressing block, 451-spring groove, 46-large through hole, 461-step, 462-movable groove, 463-small through hole, 5-frame, 6-brake cable and 7-wheel.

Detailed Description

The invention will be further described with reference to the drawings and the following detailed description.

As shown in figures 1-11, the speed reduction brake device for the walking aid vehicle comprises a transverse block 1, a brake cable connecting hole 2, a sleeving hole and a brake assembly 4. Horizontal piece 1 and cup joint hole fixed connection, brake cable connecting hole 2 is fixed to be set up on horizontal piece 1, can dig on horizontal piece 1 and establish a through-hole that runs through horizontal piece 1 as brake cable connecting hole 2, and brake subassembly 4 detachably installs on horizontal piece 1. The brake cable connecting hole 2 is used for connecting a brake cable 6 of the rollator, namely, connecting the brake cable 6 to the external brake cable 6, so that the brake cable 6 is connected with the speed reducing brake device, and the speed reducing brake device can be pulled by the brake cable 6. The sleeving hole is used for being sleeved on the walking aid vehicle, so that the speed reduction braking device is installed on the walking aid vehicle.

Wherein, the transverse block 1 is positioned at one side of the sleeve hole so as to ensure that the deceleration braking device is opposite to the wheel 7 when the deceleration braking device is installed on the walker.

One end of the transverse block 1 is provided with an installation groove 13, and a limiting groove 11 and a connecting hole 12 are arranged in the installation groove 13 in an excavation mode. The brake assembly 4 is detachably mounted in the mounting groove 13, thereby detachably mounting the brake assembly 4 to the lateral block 1. The brake assembly 4 is detachably mounted to the attachment hole 12 in the mounting groove 13 by means of an attachment member 44 such as a bolt, screw, pin, etc. For example, by a screw to be threadedly coupled with the coupling hole 12, so that the brake assembly 4 is detachably mounted in the mounting groove 13 by a screw.

In an alternative embodiment, the transverse block 1 is of one-piece construction with the socket hole.

The brake assembly 4 comprises a brake bar 41, a brake block 42, a spring 43, a connecting member 44, a pressing block 45 and a large through hole 46, wherein one end of the connecting member 44 is connected to the brake block 42, and the other end is connected to the connecting hole 12, so that the brake assembly 4 can be detachably mounted on the transverse block 1. A large through hole 46 extending longitudinally through the brake shoe 42 is hollowed out at the center of the brake shoe 42, and the large through hole 46 is provided along the lateral direction of the brake shoe 42. A movable groove 462 is dug on both side inner walls of the brake shoe 42 in the large through hole 46, and the movable groove 462 extends in the longitudinal direction of the brake shoe 42. Two steps 461 are provided on the other two side inner walls of the brake shoe 42 within the large through hole 46, the steps 461 extend in the lateral direction of the brake shoe 42, and the space between the large through holes 46 of the two steps 461 forms the small through hole 463. The small through hole 463 is located below the step 461, i.e. the step 461 is located at the side close to the transverse block 1, and the small through hole 463 is located at the side far from the transverse block 1. The brake rod 41 is located in the small through hole 463, and both ends of the brake rod 41 are movably installed in the movable slot 462 so that the brake rod 41 can move in the axial direction of the movable slot 462, that is, the brake rod 41 can slide in the movable slot 462. The pressing block 45 is hung on the step 461 so that the pressing block 45 is movably installed in the large through hole 46, and the pressing block 45 is used for pressing the brake rod 41 to prevent the brake rod 41 from being removed from the movable groove 462.

In another alternative embodiment, the two ends of the brake rod 41 are telescopic, so that the brake rod 41 can be axially extended and retracted along the movable slot 462, and the brake rod 41 can move away from and close to the wheel. That is, when the wheel is in contact with the brake rod 41 and acts on the brake rod, both ends of the brake rod 41 extend along the movable groove 462 to move the brake rod 41 away from the wheel, whereas when the wheel is separated from the brake rod 41 and is not in contact with the brake rod 41, both ends of the brake rod 41 are retracted and protruded outward by the gravity of the brake rod itself.

When both ends of the brake rod 41 are positioned at the bottom ends of the movable grooves 462, the brake rod 41 protrudes outward from the small through-hole 463 by a portion; when both ends of the brake rod 41 do not contact the bottom end of the movable groove 462 but are spaced apart from the bottom end of the movable groove 462, the brake rod 41 is retracted into the small through hole 463 to be flush with the lower end surface of the brake shoe 42 (i.e., the end surface away from the lateral block 1).

According to the one end fixedly connected with spring 43 that pressing block 45 is close to horizontal piece 1, the one end of spring 43 is connected on pressing block 45, and the other end stretches into the spacing groove 11 of horizontal piece 1, and when spacing groove 11 provided the flexible space of spring 43, also restricted spring 43 and shifted, prevented that spring 43 from mixing in disorder. Wherein, the pressing block 45 is dug with a spring groove 451, and one end of the spring 43 is connected in the spring groove 451.

In an alternative embodiment, the brake rod 41 has a cylindrical structure, and an arc-shaped groove matched with the brake rod 41 is formed at one end of the pressing block 45 contacting the brake rod 41, so that the pressing block 45 can better press the brake rod 41.

The working principle is as follows: when the speed reducing brake device is installed on the rollator, as shown in fig. 11, after an operator (or a passenger who can take the rollator or a person who pushes the rollator) pulls the brake cable 6 with his/her hand, the brake cable 6 pulls the entire speed reducing brake device to move towards the wheel 7, and the brake rod 41 reaches a downward limit position due to the combined action of the self-gravity of the brake rod 41 and the weight of the pressing block 45 on the brake rod 41, and at this time, both ends of the brake rod 41 are directly hung on the groove to contact with the bottom of the groove, that is, in an initial state, the brake rod 41 protrudes outwards relative to the transverse block 1 (that is, protrudes towards the wheel 7), so that the brake rod 41 contacts with the wheel 7 before the wheel 7, and a friction force is formed between the brake rod 41 and the wheel 7, thereby reducing the current speed and achieving a speed reducing control effect. When the hand continues to hold the brake cable 6 and pull the brake cable 6 to the bottom, the wheel 7 will generate a squeezing force to the brake rod 41 due to further pulling the deceleration braking device to move towards the wheel 7, thereby retracting the brake rod 41 inwards along the movable groove 462, the brake rod 41 also pushes the brake block 42 to approach the transverse block 1 in the mounting groove 13 and the spring 43 is compressed by the limiting groove 11 until the spring 43 can not be compressed again or the transverse block 1 is attached to the inner surface of the mounting groove 13, the brake rod 41 reaches an upper limit position, at the moment, the brake rod 41 is kept flush with the lower end surface of the brake block 42, so that the wheel 7 is simultaneously contacted with the brake block 42 and the brake bar 41, the contact area of the deceleration braking device and the wheel 7 is increased, thereby increasing the friction force and completely braking the wheel 7, and the wheel 7 can not rotate any more, namely achieving the braking effect.

The large through hole 46 and the small through hole 463 are only relative in size, and are not limited to the specific size of the large through hole 46 or the small through hole 463.

The brake rod 41 plays a role in buffering and decelerating, the contact between the brake rod 41 and the wheel 7 is flexible contact, the brake rod 41 retracts inwards continuously along with the increase of the tightening degree of the brake cable 6, the contact between the brake rod 41 and the wheel 7 is strong continuously, otherwise, the contact between the brake rod 41 and the wheel 7 is weak continuously when the brake cable 6 is loosened. Therefore, the speed of the rollator can be dynamically adjusted, and the buffering and speed reducing effects are achieved. The brake pads 42 provide a full braking effect, and when the brake pads 42 are in contact with the wheel 7, the contact surface between the brake pads 42 and the wheel 7 is large enough to completely brake the wheel 7, i.e. brake the rollator.

When the brake rod 41 is worn and needs to be replaced due to long-term use, the original brake rod 41 is detached from the brake block 42 and replaced by a new brake rod 41 after the brake assembly 4 is detached, so that the maintenance is simple. The brake block 42 can be made thicker and can be used for a long time, even if the brake block 42 can not be used at all, the brake block 42 can be assembled by only disassembling the brake assembly 4 and then assembling a new brake block 42, and the installation and maintenance are convenient. The whole structure is simple and practical, the low cost can be realized, and the replaced cost is low even if the structure is used as a consumable part.

The embodiment disclosed in this specification is only an example of the single-sided features of the present invention, and the protection scope of the present invention is not limited to this embodiment, and any other embodiments having equivalent functions all fall into the protection scope of the present invention. Various other changes and modifications may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such changes and modifications should fall within the scope of the present invention.

Claims

1. A speed reduction brake device for a walk-assisting vehicle is characterized by comprising a brake component, a brake cable connecting hole and a sleeving hole, wherein the brake cable connecting hole is connected with the brake component, the sleeving hole is connected with the brake component,

the brake assembly comprises a brake component and a speed reducing component, the speed reducing component is slidably or telescopically arranged in the brake component under the pulling action of a brake cable, the speed reducing component protrudes outwards relative to the brake component when reaching a descending limit position so that the speed reducing component is firstly contacted with the wheels of the rollator to reduce the current speed of the rollator, when reaching an ascending limit position, the speed reducing component retracts to the inside of the brake component and is kept flush with the end surface of the brake component close to the direction of the wheels so that the speed reducing component and the brake component are jointly contacted with the wheels to brake the rollator,

2. The brake de-rate apparatus of claim 1, wherein the speed reducer reaches the downward limit position under its own weight.

3. The brake-reduction apparatus for rollator use according to claim 1, further comprising a lateral block, the brake assembly being mounted on the lateral block, the brake cable attachment hole being dug in the cross member and penetrating the lateral block, the engaging hole being mounted on one end of the cross member.

4. The brake de-rate apparatus of claim 3, wherein the brake assembly is removably mounted to the cross-piece.

5. The brake de-rate brake apparatus for rollator use of claim 3 wherein the lateral block is of integral construction with the socket hole.

6. The brake de-rate brake device for rollator use of claim 1 wherein the brake member is a block-shaped brake pad and the brake de-rate member is a cylindrical brake bar.

7. The deceleration brake apparatus for walker according to claim 6, wherein a first through hole is bored in the brake pad to extend longitudinally through the brake pad, the first through hole is formed in a lateral direction of the brake pad, a movable groove is bored in both side inner walls of the brake pad in the first through hole, the movable groove extends in the longitudinal direction of the brake pad, two steps are formed in the other side inner walls of the brake pad in the first through hole, the steps extend in the lateral direction of the brake pad, a second through hole is formed in a space between the first through holes of the two steps, the second through hole is formed in a side away from the lateral pad, the brake bar is positioned in the second through hole, and both ends of the brake bar are slidably installed in the movable groove so that the brake bar can move along the movable groove,

8. The deceleration brake apparatus for rollator according to claim 7, wherein the brake assembly further comprises a spring, a connecting member, and a pressing block, the pressing block is hung on the step such that the pressing block slides along a longitudinal direction of the first through hole, the pressing block serves to restrain the brake rod to prevent the brake rod from being separated from the movable groove,

9. The deceleration brake device for rollator according to claim 8, wherein the connecting member is a screw, and both ends of the connecting member are respectively screw-coupled to the pressing block and the lateral block.

10. The reduction brake device for a walker according to claim 8, wherein the lateral block is provided with an installation groove, the brake assembly is installed in the installation groove, the limiting groove is located in the installation groove, the brake block contacts with the inner wall of the installation groove, the pressing block contacts with the inner wall of the installation groove when the brake rod reaches the upward limit position, and the pressing block is located in the first through hole away from the inner wall of the installation groove when the brake rod reaches the downward limit position.