JP2013094522A - Brake device of walking aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake device of a walking aid which is capable of preventing an accident due to acceleration on a downhill, and protecting safety of a user on an uphill.SOLUTION: In the walking aid constituted of a body 10 to be a framework, holding parts 20 provided on both sides at the upper part of the body 10, and front and rear wheels 30 provided at the front and rear of the lower part of the body 10, a connection pipe 41 is formed at the upper part of a bracket 40 for rotatably supporting the wheels 30, the lower part of the body 10 is vertically movably inserted into the connection pipe 41, a brake pin 50 to be in contact with the wheels 30 when lowered is resiliently urged by a spring 60 and installed at the lower part of the body 10, a pin hole 42 into which the brake pin 50 is to be inserted is formed at the lower center part of the connection pipe 41, and a snap ring 70 is held and fixed to the brake pin 50 made to pass through the pin hole 42 and projecting from the lower part.

Description

  The present invention relates to a walking aid used as an assisting device when a patient, an elderly person, or the like who is incapable of walking, and more particularly, to prevent a safety accident due to acceleration of a downhill, The present invention relates to a braking device for a walking aid that can safely protect a user.

  In general, as is well known, walking aids are used as auxiliary writing tools by patients, elderly people, and people with disabilities who have leg and physical disabilities. It is made movable by supporting the body when moving between places.

  There are various forms of conventional walking aids, but usually a main body that is a frame in which a pipe is bent, a grip part that is provided on both sides of the upper part of the main body and can be operated while being pushed and pulled by hand, It consists of front and rear wheels respectively provided at the lower front of the main body.

  However, the conventional walking aid has a lack of braking function, and there is no special structural problem in activities on flat terrain. A safety issue where the weight of a person's weight is applied to the walking aid and the speed of the walking aid increases rapidly, and the majority of patients and elderly people who are unable to act can not brake and cause an accident There was a point.

  In addition, the conventional walking aids lack the braking function as described above, and there is a risk that the walking aids will descend along the slope when walking on an uphill slope, causing an accident. There was also a problem that the user's safety could not be sufficiently protected on the uphill.

  The object of the present invention has been made in view of the above-described conventional problems, and it is possible to prevent an accident caused by acceleration on a downhill by enabling braking while walking. It is another object of the present invention to provide a braking device for a walking aid that can ensure the safety of the user on an uphill.

  In order to achieve the above object, the present invention provides a walking aid comprising a main body as a framework, gripping portions provided on both upper sides of the main body, and wheels provided at the front of the lower stage of the main body. A connecting pipe is formed on the upper part of the bracket that is rotatably supported, and a lower part of the main body is inserted into the inner diameter of the connecting pipe so as to be movable up and down. When each is installed, the gripping part is taken and the main body is pushed downward, the braking pin descends and the brake is applied while contacting the wheel.

  According to the walking aid braking device of the present invention, when the body is pushed downward while taking the gripping part of the walking aid during running, the brake is applied while the braking pin is in contact with the wheel. Accidents can be prevented in advance, and if the brake is applied on the uphill, the reverse is prevented, so that the safety of the user can be ensured on the uphill.

It is a perspective view of the walking aid showing the installation state of the present invention. It is sectional drawing which shows the operating state of the "A" part of FIG. It is sectional drawing which shows the operating state of the "A" part of FIG. It is sectional drawing which shows the operation state of the "B" part of FIG. It is sectional drawing which shows the operation state of the "B" part of FIG. It is sectional drawing which shows the other Example of this invention.

  Hereinafter, the technical configuration of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3b, the walking assisting device braking device according to the present invention includes a main body 10 serving as a frame, gripping portions 20 provided on both sides of the upper portion of the main body 10, and front and rear provided on both front and rear sides of the lower stage of the main body 10, respectively. In the walking aid composed of the wheels 30, connecting pipes 41 are respectively formed on upper portions of the brackets 40 that rotatably support the wheels 30, and leg portions located on the connecting pipes 41 at the front and rear sides of the left and right sides of the main body 10. The lower part of each is inserted movably up and down. Between the connecting pipe 41 and the main body 10, the brake pin 50 that comes into contact with the wheel 30 when the leg portions located on the right and left sides of the main body 10 are lowered is in an elastically biased state by a spring 60. Each is installed. The pin hole 42 into which the brake pin 50 is inserted is formed in the lower center portion of the connecting pipe 41, and the snap ring 70 is fixed to the brake pin 50 protruding downward through the pin hole 42. Basic characteristics of the structural structure.

  Here, the main body 10 is a main frame of the basic skeleton of the walking aid, and the main body 10 has a structure in which both side frames bent by a pipe are connected to a connecting bar as shown in FIG. It is formed.

  The gripping portions 20 are provided on both sides of the upper portion of the main body 10. The gripping portions 20 perform a role of allowing the walking aid to be operated while being pushed and pulled by a hand. That is, the user can travel while grasping the grip portion 20 by hand and pushing and pulling the walking aid.

  The front and rear wheels 30 are provided on the front and rear sides of the lower side of the main body 10, respectively. The front and rear wheels 30 perform a role of smoothly moving the walking aid during traveling.

  The bracket 40 rotatably supports the front and rear wheels 30, and a connecting pipe 41 is formed on the upper part of the bracket 40. The inner diameter of the connecting pipe 41 is the front and rear sides of the main body 10. The leg part located in is movably mounted up and down. At this time, a pin hole 42 through which the brake pin 50 passes is formed at the lower center of the connecting pipe 41.

  The brake pin 50 is elastically improperly installed on the retracted side by a spring 60 on the leg portions located on the front and rear sides of the left and right sides of the main body 10, and the brake pin 50 is normally a spring 60 as shown in FIGS. When the main body 10 is pushed downward, the brake pin 50 is simultaneously lowered while contacting the wheel 30 as shown in FIGS. 2b and 3b. Take the approach to advance.

  A support step 51 that is in close contact with the lower end of the leg portion of the main body 10 is integrally formed at the upper portion of the brake pin 50, and a fixing rod 52 that is press-fitted into the inner diameter of the leg portion of the main body 10 at the upper portion of the support step 51. Are provided as a unit. At this time, the support stage 51 serves to prevent the brake pin 50 from being pushed into the legs of the main body 10, and the fixing rod 52 serves to fix the brake pin 50 to the main body 10.

  As shown in FIGS. 3a and 3b, in the case of the brake pin 50 installed on the rear wheel 30, the bottom surface of the brake pin 50 is brought into surface contact with the wheel 30 during braking and in a normal position at the upper center of the wheel 30. However, in the case of the braking pin 50 installed on the front wheel 30 as shown in FIGS. 2a and 2b, the braking pin 50 is located on one side rather than the normal position at the upper center of the wheel 30, and the bottom surface of the braking pin 50 is the wheel 30 during braking. Since the corners come into contact with each other without being in surface contact with each other, the frictional force drops. Therefore, in order to increase the frictional force of the braking pin 50 installed on the front wheel 30, the lower edge of the braking pin 50 has a tapered surface 50a. Formed.

  The spring 60 imparts elasticity to the brake pin 50, and the spring 60 is disposed between the support step 51 and the pin hole 42 while being sandwiched between the brake pins 50. Accordingly, normally, the braking pin 50 maintains the state of being elastically raised (retracted position) as shown in FIGS. 2a and 3a by the elasticity of the spring 60, while when the body 10 is pushed downward, the braking pin 50 2b and 3b, the spring 60 is lowered against the elastic force while compressing the spring 60.

  The snap ring 70 is sandwiched between the braking pins 50 protruding downward through the pin holes 42, and the snap ring 70 performs a role of preventing the main body 10 from completely falling from the connecting pipe 41. To do.

  According to another embodiment of the present invention, as shown in FIG. 4, a ball home 41a is formed on the inner diameter of the connecting pipe 41, and a plurality of balls 80 contacting the main body 10 are sandwiched between the ball home 41a. It is characterized by that. According to such another embodiment of the present invention, since the ball 80 is disposed between the inner diameter of the connecting pipe 41 and the outer diameter of the main body 10, the raising / lowering operation of the main body 10 is performed more smoothly.

  As is well known, the walking aid of the present invention configured as described above is used as an assisting tool when a patient, an elderly person, a disabled person with a leg or a physical disability, etc. walk. .

  However, in the present invention, as shown in FIGS. 2a and 3a, the brake pin 50 is kept separated from the wheel 30 by the elasticity of the spring 60, and the brake is not applied. However, as shown in FIGS. 2b and 3b, the main body 10 is pushed downward. Then, the braking pin 50 comes into contact with the wheel 30 and the brake is applied.

  Therefore, according to the braking device for a walking aid according to the present invention as described above, if the user does not push the gripping portion 20 downward while holding the both-side gripping portion 20 by hand, the brakes are applied to the wheels 30 in FIGS. Although it does not take, as shown in FIGS. 2b and 3b, when the gripping portion 20 is pushed downward so that the main body 10 is lowered, the brake pin 50 is lowered and comes into contact with the wheel 30 to be braked. If the vehicle travels while pushing the grip 20, the vehicle can move gradually while preventing acceleration, and an accident caused by acceleration on a downhill can be prevented.

  In addition, according to the braking device for a walking aid according to the present invention, as described above, the brake is applied when the gripping portion 20 is pushed downward. Therefore, when the gripping portion 20 is pushed up on an uphill with a slope, the reverse movement is prevented. However, since it can move gradually, there is an advantage that it is possible to protect the safety of the user on the uphill.

  DESCRIPTION OF SYMBOLS 10 ... Main body, 20 ... Holding part, 30 ... Wheel, 40 ... Bracket, 41 ... Connecting pipe, 41a, ball home, 42 ... Pin hole, 50 ... Braking pin, 50a ... Tapered surface, 51 ... Supporting step, 52 ... Fixed Rod, 60 ... spring, 70 ... snap ring, 80 ... ball.

Claims (4)

  A bracket 40 that rotatably supports the wheel 30 in a walking aid composed of a main body 10 that is a framework, gripping portions 20 that are provided on both upper left and right sides of the main body 10, and front and rear wheels 30 that are provided on the front and rear of the lower portion of the main body 10. A connecting pipe 41 is formed on the upper part of the main body 10, and a lower part of the main body 10 is inserted into the connecting pipe 41 so as to be movable up and down. A spring 60 is mounted in a state in which the braking pin 50 in contact with the spring is retracted and biased, and a pin hole 42 through which the braking pin 50 is inserted is formed at the lower central portion of the connecting pipe 41. Then, the braking device for the walking aid, wherein the snap ring 70 is fixed to the braking pin 50 protruding downward.   The upper portion of the brake pin 50 is provided with a support step 51 that is in close contact with the lower end of the main body 10, and the upper portion of the support step 51 is provided with a fixing rod 52 that is press-fitted into the inner diameter of the main body 10. The braking device for a walking aid according to Item 1.   The braking device for a walking aid according to claim 1, wherein a tapered surface (50a) is formed at a lower portion of the braking pin (50).   2. The braking device for a walking aid according to claim 1, wherein a ball home 41a is formed on an inner diameter of the connecting pipe 41, and a plurality of balls 80 contacting the main body 10 are sandwiched between the ball home 41a. .

Images