KR102216233B1 - Break for wheel chair - Google Patents

Abstract

The present invention relates to a brake for a wheelchair. The braking device for wheelchairs is a brake button implemented to control the drive of the wheelchair, a brake connection that is implemented to apply pressure to the brake based on the pressure of the brake button to make the brake grip the wheel and the wheel of the wheelchair to drive the wheel. It may include a brake implemented to control.

Description

Brake for wheel chair{Break for wheel chair}

The present invention relates to a brake for a wheelchair. More specifically, it relates to a brake for a wheelchair for more convenient braking of the wheelchair to prevent injury due to the wheelchair.

Korea has already entered an aging society due to the rapid increase of the elderly population, and the number of persons with disabilities due to industrial accidents is constantly increasing. Accordingly, the market for assistive devices used by the elderly and the disabled is also gradually expanding, and in particular, the market for wheelchairs, which is a mobility assist device, is remarkable.

Wheelchairs are divided into passive and electric types according to the driving method. A manual wheelchair in which the user directly rolls the wheel by hand does not have a separate driving device, so the structure is simple, maintenance is easy, and the price is low. The electric wheelchair, which uses an electric motor to roll the wheels, is heavy and expensive, but it is convenient for the disabled or the elderly with reduced muscle strength.

Recently, as ease of use is emphasized, demand for electric wheelchairs is steadily increasing even in a user group capable of manual driving. In addition, as the demands for mobility and social activities of the disabled and the elderly are advanced and diversified, there is an increasing demand for a wheelchair that is light in weight, small in volume, and can be conveniently controlled.

In the case of a shared wheelchair used by many people in hospitals or nursing facilities, not a high-end wheelchair, the risk of an accident may be higher because the high-end wheelchair does not have enough functions. Therefore, there is a need for research on development of a control system for more easily controlling a wheelchair.
As related prior art, there are Public Utility Model Publication No. 20-2011-0007747 and Registered Utility Model Publication No. 20-0456241.

An object of the present invention is to solve all of the above-described problems.

In addition, an object of the present invention is to improve the braking structure of an existing wheelchair so that a wheel control user can more conveniently brake a wheelchair.

Further, an object of the present invention is to produce a brake device for adaptively controlling driving of a wheelchair according to a person using a wheelchair.

A typical configuration of the present invention for achieving the above object is as follows.

According to an aspect of the present invention, a braking device for a wheelchair includes a brake button implemented to control driving of a wheelchair, and a brake connection part implemented to apply pressure to the brake based on the pressure of the brake button so that the brake holds the wheel. And a brake connected to the wheel of the wheelchair and implemented to control driving of the wheel.

Meanwhile, the braking button may be implemented in a position of a handle of the wheelchair in a push pull structure.

In addition, the brake connection unit may include a reservoir tank and a brake hose, the reservoir tank provides additional hydraulic pressure, and the brake hose may include a first brake hose and a second brake hose.

According to the present invention, by improving the braking structure of the existing wheelchair, the wheelchair user can more conveniently brake the wheelchair.

In addition, according to the present invention, a brake device for adaptively controlling driving of a wheelchair according to a person using a wheelchair can be produced.

1 is a conceptual diagram showing a wheelchair braking device according to an embodiment of the present invention.
2 is a conceptual diagram showing a wheelchair braking structure according to an embodiment of the present invention.
3 is a conceptual diagram showing a brake operating method according to an embodiment of the present invention.
4 is a conceptual diagram showing the structure of a reservoir tank for controlling hydraulic pressure according to an embodiment of the present invention.
5 is a conceptual diagram showing a structure for controlling a transmission speed of hydraulic pressure according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The detailed description of the present invention to be described later refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable those skilled in the art to practice the present invention. It is to be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be changed from one embodiment to another and implemented without departing from the spirit and scope of the present invention. In addition, it should be understood that the positions or arrangements of individual elements in each embodiment may be changed without departing from the spirit and scope of the present invention. Therefore, the detailed description to be described later is not intended to be limited, and the scope of the present invention should be taken as encompassing the scope claimed by the claims of the claims and all scopes equivalent thereto. Like reference numerals in the drawings indicate the same or similar elements over several aspects.

Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those skilled in the art to easily implement the present invention.

According to data from the Korea Consumer Agency, a large percentage of the injuries of wheelchair users are accidents caused by falls when getting on or off, and accidents due to inadequate wheelchair operation. Therefore, there is a need for research and development on more stable brakes than conventional wheelchair brakes.

In places such as hospitals, inexpensive public wheelchairs are used, and in the wheelchair, there is a brake handle located at a low position interlocked with the wheel, and when the patient pulls the brake handle, the wheelchair stops driving.

It can be easily confirmed that the brake is adjacent to the tire and comes into contact with the tire when the brake is operated through the brake handle, so that the contamination of the wheelchair tire is exposed to the patient's hand as it is. And it was observed that the corridor of the hospital was not as big as expected, and therefore, the patients did more manipulations than expected, such as reversing their direction and moving backwards.

Accordingly, in the wheelchair braking device according to an embodiment of the present invention, a wheelchair braking device is disclosed for allowing a patient to more easily control a wheelchair while utilizing the structure of an existing wheelchair, while making the volume of the wheelchair braking device small.

1 is a conceptual diagram showing a wheelchair braking device according to an embodiment of the present invention.

In FIG. 1, a wheelchair braking device for braking a wheelchair based on a button is disclosed.

Referring to FIG. 1, the wheelchair braking device may include a brake button 100, a brake connection part (not shown), and a brake 120.

The braking button 100 may be a button for controlling driving of a wheelchair. When pressure is applied to the brake button 100, the brake 120 is operated through the brake connection part to stop the wheel of the wheelchair linked to the brake 120.

The brake connection unit may be implemented to apply pressure to the brake 120 based on the pressure of the brake button 100 so that the brake 120 holds the wheel. When pressure is applied to the brake button 100, the brake connection part may apply pressure to the first friction part and the second friction part of the connected brake 120 so that the first friction part and the second friction part rub against the wheel.

The brake 120 may be connected to a wheel of a wheelchair and implemented to control driving of the wheel. The brake 120 may include a first friction part and a second friction part meeting the wheel. Each of the first friction unit and the second friction unit may be connected to each other with respect to the first axis and move in a direction that meets each other as pressure is applied, so as to contact each surface of the wheel.

The first friction unit is a portion capable of friction with the first surface of the wheel and may control driving of the wheel through friction. The second friction unit is a portion capable of friction with the second surface of the wheel and may control driving of the wheel through friction.

In addition, in the present invention, the cover may be implemented as a structure surrounding the outside of the wheel and may be linked to an existing wheelchair structure.

In addition, according to an embodiment of the present invention, a button is implemented in the shape of a handle, and when a user grabs the handle and the button and pulls or pushes it in a specific direction, driving of the wheel may be controlled based on the brake 100.

Through this method, the brake structure, which was previously implemented at a lower position, can be moved to the user's handle position for user convenience, and the user can control the wheelchair more conveniently from the pulling structure to the button-type structure. Can be changed to

2 is a conceptual diagram showing a wheelchair braking structure according to an embodiment of the present invention.

2 discloses a method for braking a wheelchair based on a handle structure.

Referring to FIG. 2, the wheelchair braking structure may include a braking handle 200, a brake connection part, a brake 220, and a cover structure.

The braking handle 200 may be implemented in a push/pull structure to operate a brake connection unit and a brake.

Likewise, the brake connection unit is driven based on the push or pull operation of the braking handle 200 and the brake (caliper) 220 is driven to control driving of the wheel.

In addition, it is manufactured together with the wheel cover 240 and the disc brake cover 240 to cover the wheel structure of an existing wheelchair.

Likewise, through this method, the brake structure, which was previously implemented in a lower position, can be moved to the user's handle position for the user's convenience, and the user can control the wheelchair more conveniently from the pulling structure to the button-type structure. It can be transformed into a structure.

3 is a conceptual diagram showing a brake operating method according to an embodiment of the present invention.

3 discloses a method for operating a brake on a wheelchair.

Referring to FIG. 3, a structure for controlling a brake through a brake connection unit based on a brake button in order to easily control a wheelchair based on a button is disclosed.

The brake connection part of the wheelchair brake may include a reservoir tank 310 and a brake hose 320.

As described above, when pressure is applied to the button, hydraulic pressure may be transmitted to the brake-in caliper through the hose.

The reservoir tank 310 is a space containing hydraulic oil for operating a disc brake, and stores oil in case a high pressure is required inside the brake.

The brake hose 320 may be manufactured as a double or more high pressure line because it must withstand a high pressure during brake operation. Depending on the type of brake oil, the internal material may be slightly different.

The caliper may be a device that transmits pressure generated from a brake lever to a piston that operates a brake pad. Most of the products are produced by the aluminum casting method and divided into two pieces. For high-end products, there is also a one-piece method made by machining a single block with computer numerical control (CNC).

According to an embodiment of the present invention, a structure for adaptively controlling the operation of a brake according to a force of a user using a wheelchair and a reaction speed desired by the user is disclosed.

The force that controls the brakes can vary from user to user. Therefore, it is possible to set the minimum force for controlling the brake by checking the user's force in advance. When controlling the brake button, the brake may be operated based on the hydraulic pressure provided through the hose. However, the brake button may be controlled even if the user generates a small force by providing the brake hydraulic pressure according to the setting.

For example, a plurality of brake control steps 300 may exist to determine a force for controlling the brake, and one of the plurality of brake control steps 300 may be determined.

One of the plurality of brake control steps 300 may be determined based on a force that the user primarily pulls the brake. In the test mode, it is determined whether the brake is controllable through the caliper based on the main hydraulic pressure generated when the user pulls the brake with a general force, and the brake control step 300 necessary for the user to control the brake is set. I can.

Specifically, when the user pulls the brake, the magnitude of the force applied to the caliper may be sensed. An additional force required for the user is determined based on the difference between the magnitude of the force applied to the caliper and the magnitude of the force required to control the brake, and additional hydraulic pressure for providing the additional required force and the brake control step 300 for the user Can be determined.

According to an embodiment of the present invention, the additional hydraulic pressure provided from the reservoir tank 310 is changed according to the set brake control step 300, and the brake control may be performed based on this additional hydraulic pressure.

The additional hydraulic pressure required for the user's brake control may be changed based on the set brake control step 300. For example, users who can apply relatively high force are additionally provided for brake control, so that the additional hydraulic pressure is relatively small, and users who cannot apply relatively high force are additionally provided for brake control, so that additional hydraulic pressure is provided. It can be relatively large.

When the brake control step is set, the reservoir tank 310 may provide additional hydraulic pressure according to the brake control step when the brake is operated step by step. The reservoir tank 310 may provide different hydraulic pressures according to the set brake control step 300 to help the user to control the brake with a small force.

After the user's brake control step 300 is primarily set, the above procedure may be repeated again to reset the brake control step 300 that the user feels comfortable. Alternatively, the user may directly set the brake control step 300 low or high as necessary based on the brake control step 300 to change the amount of force for brake control.

Further, according to an embodiment of the present invention, the user may adjust the speed at which the brake reacts.

You can also control how fast you react when you apply the brakes. The reaction speed of the brake may be changed according to a first transmission speed of the hydraulic pressure to the piston according to a force for holding the brake of the user and a second transmission speed of the hydraulic pressure provided through the reservoir tank 310 to the piston.

When the first transmission speed and the second transmission speed are relatively fast, the reaction speed of the brake may be relatively increased. When the first transmission speed and the second transmission speed are relatively slow, the reaction speed of the brake may be relatively slow.

As described above, a difference in hydraulic pressure supplied through the reservoir tank 310 may occur according to the brake control step 300. As the brake control step requires relatively more hydraulic pressure based on the reservoir tank 310, the second transmission speed may have a greater influence on the brake reaction speed. Accordingly, according to the exemplary embodiment of the present invention, as the hydraulic pressure supplied through the reservoir tank 310 increases according to the brake control step 300, the control ratio for the second transmission speed may be relatively increased. Therefore, as the setting of the brake control step 300 is relatively dependent on the hydraulic pressure of the reservoir tank 310, the control amount of the second transmission speed is set to be relatively larger than the control of the first transmission speed, thereby controlling the brake reaction speed. Can be performed.

4 is a conceptual diagram showing the structure of a reservoir tank for controlling hydraulic pressure according to an embodiment of the present invention.

In Figure 4 a structure for providing additional hydraulic pressure in the reservoir tank is disclosed.

Referring to FIG. 4, as described above, when a user operates the brake, additional hydraulic pressure may be provided according to a set brake level.

The reservoir tank 400 is a main path for supplying brake oil to the first brake hose 410 connected to the brake, and an additional path for supplying additional hydraulic pressure through the second brake hose 420 through the hydraulic control unit 405 It may include.

Hereinafter, a method of supplying additional hydraulic pressure based on the second brake hose 420 is disclosed.

When the brake button is pushed, information on whether the brake button is pushed may be provided to the reservoir tank 400. When the brake button is pushed, the reservoir tank 400 opens the hydraulic control unit of the reservoir tank 400 to provide additional hydraulic pressure according to the set brake control step, and applies the additional hydraulic pressure according to the brake control step to the second brake hose ( 420) through the piston can be provided. The brake hose for providing hydraulic pressure through the reservoir tank 400 may be a brake hose separate from the pressure provided through the brake button.

The hydraulic control unit 405 may be a structure for adjusting the pressure of the brake oil in order to provide different hydraulic pressures according to the required hydraulic pressure. The hydraulic control unit 405 can store brake oil of different pressures according to the set brake control step, and provides a separate hydraulic pressure using the brake oil located in the hydraulic control unit 405 to the piston of the brake through a separate pressure. can do.

The hydraulic supply hole of the hydraulic control unit 405 may be opened according to a push operation of the brake, and when the hydraulic supply hole is opened, additional hydraulic pressure may be applied to the hydraulic control unit to provide additional pressure.

When the brake is released, a pressure in the reverse direction for removing the additional hydraulic pressure may be generated by the hydraulic control unit, and the additional hydraulic pressure applied to the brake may be removed based on the pressure in the reverse direction.

5 is a conceptual diagram showing a structure for controlling a transmission speed of hydraulic pressure according to an embodiment of the present invention.

In FIG. 5, a structure for controlling the operating speed of the brake is disclosed.

Referring to FIG. 5, a hydraulic pressure providing path for providing hydraulic pressure in order to control the operating speed of the brake may be controlled.

In order to speed up the brake operation speed, the hydraulic pressure must be quickly transmitted to the brake, and in order to slow the brake operation speed, the hydraulic pressure must be transmitted slowly to the brake.

The hydraulic control unit may include a hydraulic speed control layer 500 and an area control unit 520 that adjusts the area of the hydraulic speed control layer to control the hydraulic transmission speed.

The hydraulic speed control layer 500 may have a plurality of partition structures and may be plural. The hydraulic speed control layer 500 may be a structure for lowering a transmission speed to a piston for brake oil. The hydraulic speed control layer 500 may be located in a main path for supplying to the first brake hose and an additional path for supplying additional hydraulic pressure through the second brake hose through the hydraulic control unit.

According to the set brake operation speed, the number of hydraulic speed control layers 500 and a transfer resistance area preventing the transfer of brake oil from the hydraulic speed control layer 500 may be determined.

For example, when the brake operation speed is required to be high, the number of the hydraulic speed control layers 500 may be set relatively small, and the transfer resistance area of the hydraulic speed control layer 500 may be set to be narrow. In addition, when the brake operation speed is to be slow, the number of the hydraulic speed control layers 500 may be set to be relatively large, and the transfer control area of the hydraulic speed control layer 500 may be set to be wide.

The operating speed of the brake may be determined according to the number of the hydraulic speed control layers 500 and the transfer control area of the hydraulic speed control layer 500.

In addition, as described above, a difference in hydraulic pressure supplied through the reservoir tank may occur according to the brake control step. As the brake control step requires a relatively large amount of hydraulic pressure based on the reservoir tank, the second transmission speed may have a greater influence on the brake response speed. Accordingly, according to an embodiment of the present invention, as the additional hydraulic pressure supplied through the reservoir tank is relatively increased according to the brake control step, the control ratio for the second transmission speed may be relatively increased. Accordingly, as the setting of the brake control step is relatively dependent on the additional hydraulic pressure of the reservoir tank, the control amount of the second transmission speed is set to be relatively larger than the control of the first transmission speed, so that the brake reaction speed can be controlled. .

Therefore, as the setting of the brake control step is relatively dependent on the additional hydraulic pressure of the reservoir tank, the area of the hydraulic speed control layer and the hydraulic speed control layer located in the additional path becomes larger than the control of the first transmission speed. The hydraulic control based on can be set to be larger. That is, the first weight of the area of the hydraulic speed control layer 500 and the hydraulic speed control layer 500 for relatively controlling the second transmission speed is the hydraulic speed control layer 500 for controlling the first transmission speed. The hydraulic control may be performed by setting higher than the second weight of the area of the hyperhydraulic speed control layer 500. That is, the setting of the first weight and the second weight may be changed according to the brake control step.

The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded in the computer-readable recording medium may be specially designed and configured for the present invention or may be known and usable to those skilled in the computer software field. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magnetic-optical media such as floptical disks. medium), and a hardware device specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of the program instructions include not only machine language codes such as those produced by a compiler but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device can be changed to one or more software modules to perform the processing according to the present invention, and vice versa.

In the above, the present invention has been described by specific matters such as specific elements and limited embodiments and drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. Anyone with ordinary knowledge in the technical field to which the invention belongs can make various modifications and changes from these descriptions.

Claims (3)

The brake system for wheelchairs,
A braking button implemented to control driving of a wheelchair;
A brake connection part implemented to apply pressure to the brake based on the pressure of the brake button so that the brake grips the wheel; And
A brake connected to the wheel of the wheelchair and implemented to control the driving of the wheel,
The braking button is implemented in a handle position of the wheelchair in a push pull structure,
The brake connection part includes a reservoir tank and a brake hose,
The reservoir tank provides additional hydraulic pressure,
The brake hose includes a first brake hose and a second brake hose,
The wheelchair braking device senses the magnitude of the force applied to the caliper when the user drives the brake, and provides the user based on a difference between the magnitude of the force applied to the caliper and the magnitude of the force required to control the brake. Determine the additionally required force, determine the additional hydraulic pressure to provide the additionally required force,
The braking device for a wheelchair adjusts a brake reaction speed according to the user, and the brake reaction speed is a first transmission speed to a piston of hydraulic pressure and a second transmission of the additional hydraulic pressure to the piston provided through the reservoir tank Changes with speed,
The reservoir tank comprises a main path for supplying brake oil to the first brake hose connected to the brake and an additional path for supplying additional hydraulic pressure through the second brake hose through a hydraulic pressure control unit. Device. The method of claim 1,
The braking device for the wheelchair further includes a hydraulic control unit,
The hydraulic control unit includes an area control unit for adjusting an area of the hydraulic speed control layer and the hydraulic speed control layer to control the hydraulic transmission speed,
The hydraulic speed control layer is plural as a plurality of partition structures,
A brake device for a wheelchair, characterized in that the number of the hydraulic speed control layers and a transmission resistance area that blocks the transmission of brake oil from the hydraulic speed control layer are determined according to a set brake operation speed. delete

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