JP2018177130A - Height adjustment mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a height adjustment mechanism which enables a reduction of backlash of a pipe.SOLUTION: A height adjustment mechanism 130R includes: an inner pipe 121R formed with multiple height adjustment holes 1211, 1212, ... ; an outer pipe 101R into which the inner pipe 121R is slidably inserted; a cover 139 disposed at an end part of the outer pipe 101R; a pin 132 which is disposed at an inner side of the cover 139 and slides in a horizontal direction to be inserted into the height adjustment holes 1211, 1212, ... ; and a pressing member 133 which is disposed at the inner side of the cover 139 and slides integrally with the pin 132 in the horizontal direction to bring surface into contact with the inner pipe 121R.SELECTED DRAWING: Figure 26

Description

  The present invention relates to a height adjustment mechanism such as a handle.

  A walk car for assisting a user's walk is known conventionally. For example, a walking car is disclosed in Japanese Patent Laid-Open No. 2014-226412 (Patent Document 1). According to Patent Document 1, a pair of left and right vertical frames, each provided with an elbow holder at its upper end and wheels respectively at its lower end, an upper connecting member having a width adjusting mechanism and a folding button, A sliding member sliding in the vertical direction in the vertical frame, a rotating frame having one end rotatably attached to the other vertical frame and the other end rotatably attached to the sliding member, And a lower connecting member having sliding end position defining means for defining a sliding end position of the sliding member.

JP, 2014-226412, A

  An object of the present invention is to provide a height adjustment mechanism capable of reducing pipe rattling.

  According to one aspect of the invention, a height adjustment mechanism is provided. The height adjustment mechanism is disposed inside the cover, an inner pipe having a plurality of height adjustment holes formed therein, an outer pipe through which the inner pipe is slidably inserted, a cover disposed at an end of the outer pipe, and A pin that can be inserted into the height adjustment hole by sliding horizontally, and a pressing member that is disposed inside the cover and that slides integrally with the pin and horizontally contacts the inner pipe.

  As described above, according to the present invention, a height adjustment mechanism capable of reducing pipe rattle is provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front perspective view which shows the whole structure at the time of use of the walk vehicle 100 concerning 1st Embodiment. It is a right side view at the time of use of walk car 100 concerning a 1st embodiment. It is a front perspective view at the time of use of the walk car 100 of a state where a seat 110, a backrest 112, and a bag 150 concerning the first embodiment are ridden. It is a rear perspective view at the time of use of the walk vehicle 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment are removed. It is a left view at the time of use of walking car 100 in the state where riding surface 110, backrest 112, and bag 150 concerning a 1st embodiment were ridden. It is a front view at the time of use of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment are removed. It is a rear view at the time of use of the walking vehicle 100 in the state which carried away the seat 110 concerning the 1st embodiment, backrest 112, and bag 150. It is a top view at the time of use of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 concerning the first embodiment are ridden. It is a side view of each vertical frame 101L and 101R concerning a 1st embodiment. It is a back surface sectional view of rear 1011L of each vertical frame 101L and 101R concerning a 1st embodiment, and 1011R. It is a front perspective view at the time of folding of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment ride away. It is a rear perspective view at the time of folding of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment ride away. It is a front view at the time of folding of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment ride away. It is a rear view at the time of folding of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 according to the first embodiment ride away. It is a photograph at the time of folding of walk car 100 concerning a 1st embodiment. It is a front perspective view which shows the lifting state of the seating surface 110 of the walk car 100 concerning 1st Embodiment, ie, the open state of the bag 150. As shown in FIG. It is a front perspective view of seat 110 and bag 150 at the time of opening of bag 150 concerning a 1st embodiment. FIG. 6 is an enlarged perspective view of a lower right portion of the seat surface 110 when the walking vehicle 100 according to the first embodiment is used. It is a front view of the walk car 100 at the time of use concerning 1st Embodiment. It is a front view of walking car 100 which shows the state which began to fold folding car 100 concerning a 1st embodiment in the horizontal direction. It is a front perspective view of walk car 100 in the state where handle parts 120L and 120R concerning a 1st embodiment were raised. It is a side view of walk car 100 in the state where handle parts 120L and 120R concerning a 1st embodiment were raised. It is a partial cross section side view of the 1st state near the height adjustment mechanism 130R of the handle concerning a 1st embodiment. It is a partial cross section side view of the 2nd state near the height adjustment mechanism 130R of the handle concerning a 1st embodiment. It is a partial cross section side view of the 3rd state near the height adjustment mechanism 130R of the handle concerning a 1st embodiment. It is a partial cross section side view of the 4th state near the height adjustment mechanism 130R of the handle concerning a 1st embodiment. It is a perspective view which shows the assembly structure of 140 A of brake mechanisms of the walking vehicle 100 concerning 1st this embodiment. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the brake concerning a 1st embodiment is not applied. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the usual brake concerning a 1st embodiment is applied. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the parking brake concerning a 1st embodiment is applied. It is a front perspective view at the time of use of the walk car 100 of a state where a seat 110, a backrest 112, and a bag 150 concerning the 2nd embodiment are ridden. It is a top view at the time of use of the walk car 100 in the state where a seat 110, a backrest 112, and a bag 150 concerning the 2nd embodiment were ridden. It is a top view of grip 224L concerning a 2nd embodiment. FIG. 16 is an enlarged perspective view of a lower right portion of the seating surface 110 when the walking vehicle 100 according to the third embodiment is used. It is a front view of the walk car 100 at the time of use of the walk car 100 concerning 3rd Embodiment. It is a front view of walk vehicle 100 in the state where folding of the cross direction of walk vehicle 100 concerning a 3rd embodiment was started. It is an expansion perspective view of a lower right part of seating surface 110 at the time of use of walk car 100 concerning a 4th embodiment. It is a partially sectioned side view of the 1st state near the height adjustment mechanism 130R of the handle concerning a 6th embodiment. It is a partial cross section side view of the 2nd state near the height adjustment mechanism 130R of the handle concerning 6th Embodiment. It is a partial cross section side view of the 3rd state near the height adjustment mechanism 130R of the handle concerning 6th Embodiment. It is a partial cross section side view of the 4th state of the vicinity of height adjustment mechanism 130R of the handle concerning a 6th embodiment. It is a partial cross section side view of the 1st state of the vicinity of height adjustment mechanism 130R of the handle concerning a 7th embodiment. It is a partial cross section side view of the 2nd state of the vicinity of height adjustment mechanism 130R of the handle concerning a 7th embodiment. It is a partial cross section side view of the 3rd state near the height adjustment mechanism 130R of the handle concerning 7th embodiment. It is a partial cross section side view of the 4th state of the vicinity of height adjustment mechanism 130R of the handle concerning a 7th embodiment. It is a perspective view which shows the assembly structure of 140 A of brake mechanisms of the walking vehicle 100 concerning 8th this embodiment. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the brake concerning this 8th embodiment is not applied. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the usual brake concerning a 8th embodiment is applied. It is a side view showing the inside of cover 148L of brake mechanism 140L of walk car 100 in the state where the parking brake concerning an 8th embodiment is applied. It is a perspective view showing the assembling composition of brake mechanism 240L of walk car 100 concerning a 9th this embodiment. It is a side view showing the inside of cover 148L of brake mechanism 240L of walk car 100 in the state where the brake concerning a 9th embodiment is not applied. It is a side view showing the inside of cover 148L of brake mechanism 240L of walk car 100 in the state where the usual brake concerning a 9th embodiment is applied. It is a side view showing the inside of cover 148L of brake mechanism 240L of walk car 100 in the state where the parking brake concerning a 9th embodiment is applied.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description about them will not be repeated. In addition, the left part of the walking car is given the symbol "L" and the right part is given the symbol "R", but the members common to the left and right are collectively referred to as "R" and "L In some cases, explanations will be given without "."
First Embodiment
<Overview of walking car 100>

  First, an overview of the walking vehicle 100 according to the present embodiment will be described. FIG. 1 is a front perspective view showing an entire configuration of the walking vehicle 100 according to the present embodiment at the time of use. FIG. 2 is a side view at the time of use of the walking vehicle 100 according to the present embodiment.

Referring to FIGS. 1 and 2, a walking vehicle 100 according to the present embodiment mounts a seat 110, a backrest 112, and a bag 150 between the left and right handle portions 120 </ b> L and 120 </ b> R. Then, as described later, the walking car 100 is folded in the lateral direction, lifts the seat surface 110 upward from the front to open the bag 150, adjusts the height of the handle portions 120L and 120R, or A brake or parking brake can be applied, or the front wheels 107L and 107R can be lifted by stepping on the tipping covers 160L and 160R. Hereinafter, each part of the walking vehicle 100 according to the present embodiment will be described in detail.
<Overall Configuration of Walking Car 100>

  The entire configuration of the walking vehicle 100 according to the present embodiment will be described. FIG. 3 is a front perspective view at the time of use of the walking vehicle 100 in a state in which the seat 110, the backrest 112, and the bag 150 are removed according to the present embodiment. FIG. 4 is a rear perspective view of the same. FIG. 5 is a left side view of the same. FIG. 6 is also a front view. FIG. 7 is also a rear view. FIG. 8 is also a plan view.

  With reference to FIGS. 1 to 8, the walking car 100 according to the present embodiment mainly includes a pair of left and right vertical frames 101L and 101R, a pair of left and right front wheels 107L and 107R, and a pair of left and right rear wheels 108L, 108R, main connection frames 102L and 102R, sub connection frames 105L, 105R, 106L and 106R, a seat surface 110, a bag 150, a pair of left and right handle portions 120L and 120R, height adjusting mechanisms 130L and 130R, and The left and right brake mechanisms 140L and 140R and the left and right tipping covers 160L and 160R are provided.

<About the structure for traveling of walking car 100>
Each vertical frame 101L, 101R is formed of iron, aluminum, their alloys, or resin. FIG. 9 is a side view of the vertical frames 101L and 101R. Referring to FIG. 9, each of the vertical frames 101L and 101R is a rod-like member having an L shape in side view. And as shown in FIG. 10, each vertical frame 101L and 101R is a hollow member of a substantially rectangular shape in cross sectional view.

  Returning to FIGS. 3 to 8, rear wheels 108L and 108R are pivotally supported at the rear ends of the rear portions 1011L and 1011R of the respective vertical frames 101L and 101R. Front frames 1012L and 1012R are welded to the front on the lower front of the vertical frames 101L and 101R. The front wheels 107L and 107R are pivotally supported at the front ends of the front frames 1012L and 1012R. In the present embodiment, the diameter of the front wheels 107L and 107R is larger than the diameter of the rear wheels 108L and 108R. Further, in the present embodiment, the welding portion and the front frames 1012L and 1012R are covered by the front covers 103L and 103R.

  Here, the tipping configuration of the rear wheels 108L and 108R according to the present embodiment will be described with reference to FIGS. At the rear portions 1011L and 1011R of the vertical frames 101L and 101R pivotally supporting the rear wheels 108L and 108R, covers for tipping 160L and 160R are provided to the positions covering the upper portions of the rear wheels 108L and 108R. A plurality of convex portions 160X and 160X are formed on the upper surfaces of the covers 160L and 160R so that the shoes do not slip when the shoes are stepped on.

  As a result, the user steps on the covers 160L and 160R above the rear wheels 108L and 108R instead of the side portions of the rear wheels 108L and 108R and pulls on the handle portions 120L and 120R, thereby the front wheels 107L of the walking vehicle 100, The 107R can be lifted. As a result, the walking car 100 can easily get over the steps on the road.

In the present embodiment, the rear wheels 108L and 108R are provided with a brake mechanism.
<About the structure of folding in the lateral direction of the walking car 100>

  Two connection frames 102L and 102R are connected between the left and right vertical frames 101L and 101R so as to cross in an X shape in a front view. More specifically, the first connecting frame 102L is disposed from the upper left to the lower right. The first connecting frame 102L is bent forward at its lower portion and pivoted to the right front frame 1012R. The top of the first connecting frame 102L is welded to the left seat frame 111L.

  Similarly, the second connection frame 102R is disposed from the upper right to the lower left. The second connecting frame 102R is bent forward at its lower portion and pivotally supported by the left front frame 1012L. The upper portion of the second connection frame 102R is welded to the right seat frame 111R. The first connecting frame 102L and the second connecting frame 102R are pivotally supported by an axis 102X in the middle thereof.

Since it was constituted as mentioned above, it is made to lie horizontally on the left and right connecting frames 102L and 102R while rotating mutually on the shaft 102X, as shown in FIGS. It can be opened in the direction and put in use. Conversely, by vertically standing the left and right vertical frames 101L and 101R while rotating them relative to each other on the shaft 102X, the walking vehicle 100 is closed in the left and right direction as shown in FIGS. be able to. FIG. 11 is a front perspective view at the time of folding of the walking vehicle 100 in a state in which the seat 110, the backrest 112, and the bag 150 according to the present embodiment are removed. FIG. 12 is a rear perspective view of the same. FIG. 13 is also a front view. FIG. 14 is also a rear view. FIG. 15 is a photograph at the time of folding of the walking vehicle 100 according to the present embodiment.
<The seat 110 and the bag 150 of the walking car 100>

  FIG. 16 is a front perspective view showing a state in which the seat 110 of the walking vehicle 100 according to the present embodiment is lifted, that is, a state in which the bag 150 is opened. FIG. 17 is a front perspective view of the seat surface 110 and the bag 150 in the state in which the bag 150 according to the present embodiment is opened.

  Referring to FIGS. 1, 2, 16 and 17, in the present embodiment, seat cushion frames 111L and 111R are attached between the vertical frames 101L and 101R. More specifically, the left seat frame 111L is welded to the first connecting frame 102L. The right seat frame 111R is then welded to the second connecting frame 102R.

  The rear end portions of the seat surface elevating frames 113L and 113R are pivotally supported at substantially central portions in the front-rear direction of the left and right seat surface frames 111L and 111R, respectively. The bottom surfaces of the left and right seat surface elevating frames 113L and 113R are held in a horizontal state by abutting on the upper surfaces of the front portions of the seat surface frames 111L and 111R.

  The upper end of the bag 150 is attached to the front of the left and right seat surface frames 111L and 111R, more specifically to the front of the position where the seat surface elevating frames 113L and 113R are pivotally supported. The left end of the seat 110 is attached to the rear of the left seat frame 111L and the left seat lift frame 113L, and the rear of the right seat frame 111R and the right seat lift frame 113R The right end of face 110 is attached. That is, the front portion 110A of the seat 110 also functions as the lid of the bag 150 and also as the seat 110. In the present embodiment, the seat 110 is extended to a position rearward of the bag 150, that is, to the rear 110B of the left and right seat frames 111L and 111R.

  Since it is comprised as mentioned above, as shown to FIG. 1 and FIG. 2, lowering the seat surface raising / lowering frame 113L, 113R on either side and making each bottom face contact | abut on the upper surface of seat surface frame 111L, 111R. Thus, the left and right seat raising and lowering frames 113L and 113R are maintained in the horizontal state, and the usable state of the seat 110, that is, the closed state of the bag 150 is realized. Then, as shown in FIGS. 16 and 17, the left and right seat surface elevating frames 113L and 113R are raised, that is, the front portion 110A of the seating surface 110 is lifted from the front, and the left and right seat surface elevating frames 113L, By bringing the rear end of 113R into contact with the upper surfaces of the seat frames 111L and 111R, the left and right seat elevating frames 113L and 113R are maintained in the vertical state, and the non-use state of the seat 110, that is, the bag 150 is opened. Realize the state.

  In the present embodiment, even when the front portion 110A of the seat 110 is lifted from the front, the rear portion 110B of the seat 110 remains horizontal. Therefore, even when the bag 150 is opened, as described later, the belt for releasing the hook is not pulled, and the walking vehicle 100 is not folded in the left-right direction.

Further, in the present embodiment, the grip portion 110X is formed at the front of the seat 110. Thus, the user can easily open the bag 150 by gripping the grip portion 110X.
<Structure for Reducing Deflection of Walking Car 100>

  FIG. 18 is an enlarged perspective view of the lower right portion of the seating surface 110 when the walking vehicle 100 according to the present embodiment is used. FIG. 19 is a front view of the walking car 100 at the time of use according to the present embodiment. FIG. 20 is a front view of the walking car 100 showing a state in which the walking car 100 according to the present embodiment has started to be folded in the left-right direction.

  First, the configuration of the right side of the walking vehicle 100 will be described with reference to FIGS. 18 and 19. At the top of the right vertical frame 101R, a front base 1041R and a rear base 1042R are erected separately in the front-rear direction toward the left. An axis 109R is pivotally supported between the front base 1041R and the rear base 1042R. In the present embodiment, in the use state of the seat 110, the seat frame 111R is placed on the upper surfaces of the front base 1041R and the rear base 1042R.

  In the present embodiment, the lower portion of the rear base 1042R and the upper portion of the main connecting frame 102R are connected by the sub connecting frames 105R and 106R. The sub connection frames 105R and 106R may be fixed to each other by the front and rear frames 1051R, or may be a resin member in which the sub connection frames 105R and 106R and the front and rear frames 1051R are integrally molded. The sub connection frames 105R and 106R and the front and rear frames 1051R are formed in an H shape in plan view, and the lower portion of the main connection frame 102R is in contact with and supported by the upper surfaces of the front and rear frames 1051R when the seat 110 is in use. It is configured.

  On the other hand, a support member 114R is attached to the seat cushion frame 111R at a position located on the left of the vertical frame 101R. The support member 114R is formed in a portal shape in a side view of the walking vehicle 100, and a front rib 1141R and a rear rib 1142R are formed. A shaft 115R is pivotally supported between the front rib 1141R and the lower portion of the rear rib 1142R. The hook 116R is pivotally supported by the axis 115R. In the hook 116R, a concave portion 1161R for catching on the shaft 109R is formed on the lower right side (outside of the walking vehicle 100), and a hole 1162R is formed on the lower left side (inner side of the walking vehicle 100) It is done. The hook 116R is biased in a direction to be hooked on the shaft 109R by a winding spring 118R or the like.

  In particular, in the present embodiment, when the seat 110 is used, the front rib 1141R, the rear rib 1142R and the hook 116R of the support member 114R are fitted between the front base 1041R and the rear base 1042R. In this state, the hook 116R is caught on the shaft 109R by the biasing force of the winding spring 118R. More specifically, when the front rib 1141R, the rear rib 1142R, and the hook 116R of the support member 114R are fitted between the front base 1041R and the rear base 1042R, the gap between the front rib 1141R and the front base 1041R or the rear The gap between the rib 1142R and the rear base 1042R is preferably about 0 mm to 3 mm, more preferably about 0 mm to 1 mm, and still more preferably about 0 mm to 0.5 mm.

  In the present embodiment, the configuration on the left side of the walking vehicle 100 is also similar to that on the right side, and therefore the description thereof will not be repeated here. The right ring 117R and the left ring are connected by a string member such as a belt 119. The central portion of the belt 119 extends from the cut of the rear portion 110B of the seat 110 to the upper side of the seat 110. More specifically, the belt 119 passes from the right hook 116R, through the right cut of the seat 110, above the seat 110, through the left cut of the seat 110, to the left hook 116L. The rear portion 110B of the seat 110 may be pulled upward when the user pulls the belt 119 upward, or the belt 119 may be pulled upward when the rear 110B of the seat 110 is pulled upward. It may be.

With the above configuration, when the user pulls the belt 119 or the rear portion 110B of the seating surface 110 upward, the left and right rings 117L and 117R are moved to the inside of the walking vehicle 100 by the belt 119 as shown in FIG. It is pulled. As a result, the lower portions of the left and right hooks 116L and 116R are pulled toward the center of the walking vehicle 100, and the hooks 116L and 116R are disengaged from the shaft 109R on the vertical frames 101L and 101R side. Then, the hooks 116L and 116R and the seat frames 111L and 111R are pulled upward by the belt 119 and the seat surface 110 as they are, and the connecting frames 102L and 102R are folded in the left and right direction, and the entire walking vehicle 100 is folded in the left and right direction. Be
<Height Adjustment Mechanism of Handles 120L, 120R>

  FIG. 21 is a front perspective view of the walking vehicle 100 according to the present embodiment with the handle portions 120L and 120R raised. FIG. 22 is a side view of the walking vehicle 100 according to the present embodiment with the handle portions 120L and 120R raised.

  With reference to FIGS. 3, 4, 21, and 22, with regard to the walking vehicle 100 according to the present embodiment, the upper frames 121L and 121R are interpolated from above the vertical frames 101L and 101R. Handle bases 122L and 122R are attached to the upper ends of the upper frames 121L and 121R, respectively. Handle frames 123L and 123R are attached to the rear of the handle bases 122L and 122R, respectively. Note that each of the handle bases 122L and 122R and each of the handle frames 123L and 123R may be integrally molded. Grips 124L and 124R are placed on the handle frames 123L and 123R, respectively.

  In the present embodiment, the left upper frame 121L, the left handle base 122L, the left handle frame 123L, and the left grip 124L are collectively referred to as the left handle portion 120L, and the right upper frame 121R and the right The handle base 122R, the right handle frame 123R, and the right grip 124R are collectively referred to as the right handle portion 120R.

  In the present embodiment, height adjustment mechanisms 130L and 130R are attached to the upper ends of the vertical frames 101L and 101R. The height adjustment mechanisms 130L and 130R are mechanisms for adjusting the degree of the upper frames 121L and 121R inserted into the vertical frames 101L and 101R. The configurations of the height adjustment mechanism 130L on the left side and the height adjustment mechanism 130R on the right side are the same, and therefore, the height adjustment mechanism 130R on the right side will be described below. In addition, the code | symbol of R and L regarding the height adjustment mechanism 130 is abbreviate | omitted for description. FIG. 23 is a partial cross-sectional side view of the vicinity of the height adjustment mechanism 130 of the handle according to the present embodiment.

  Referring to FIG. 23, upper frame 121R is interpolated from above in vertical frame 101R. A plurality of adjustment holes 1211, 1212, 1213, 1214, 1215, 1216 are formed in the height direction at the rear of the upper frame 121R.

  An adjustment case 139 is attached to an upper portion of the vertical frame 101R so as to surround the upper frame 121R. In the adjustment case 139, the pin 132 which can be inserted into the adjustment holes 1211R,..., The horizontal member 133, the upper and lower members 134, the biasing member 135, and the front end of the operation lever 131 are accommodated inside the rear portion. Be done. The horizontal member 133 is slidable in the front-rear direction inside the adjustment case 139 integrally with the pin 132. The front surface 133Z of the horizontal member 133 is preferably formed in a shape that can make surface contact with the outer peripheral surface of the upper frame 121R.

  The upper and lower members 134 are slidable in the vertical direction. The horizontal member 133 slides in the front-rear direction in accordance with the movement of the upper and lower members 134. More specifically, the horizontal member 133 is configured to move forward as the upper and lower members 134 move upward, and is configured to move rearward as the upper and lower members 134 move downward. Further, in the present embodiment, the upper and lower members 134 are biased upward from below by the biasing member 135.

  An upper abutment portion 131X and a lower abutment portion 131Y are formed at the front end portion of the operation lever 131, and configured to be able to abut on an upper horizontal surface of the upper and lower members 134 and a middle slope. Then, when the rear portion of the operation lever 131 is lifted upward, the upper and lower members 134 are lowered by the upper contact portion 131X, and when the rear portion of the operation lever 131 is pushed downward, the upper and lower members 134 are raised by the lower contact portion 131Y. It is configured.

  With this configuration, in the present embodiment, as shown in FIG. 23, when the lower portion of the operation lever 131 is lifted rearward and upward, the upper contact portion 131X of the operation lever 131 is used as the biasing member 135. The upper and lower members 134 are pushed downward. Then, as shown in FIG. 24, when the oblique surface of the upper and lower members 134 pushes the oblique surface of the rear of the horizontal member 133 downward, the horizontal member 133 and the pin 132 slide rearward. As a result, the pin 132 comes out of the adjustment hole 1214, and the upper frame 121R can slide vertically with respect to the height adjustment mechanism 130 and the vertical frame 101R. In this state, the user adjusts the upper frame 121R to a desired height.

  When the upper frame 121R reaches a desired height and the user releases the control lever 131, the upper and lower members are urged by the urging member 135 in the upward direction, and the oblique surface of the upper and lower members 134 is the horizontal member 133. The diagonal surface of the rear of the is pushed upward, and the horizontal member 133 and the pin 132 are biased forward. If the heights of the pins 132 and the adjustment holes 1211R... Do not match, the pins 132 do not enter the adjustment holes 1211R.

  When the user slightly changes the height of the upper frame 121R and the height of the pin 132 matches the height of any one of the adjustment holes 1211R, as shown in FIG. 25 by the biasing force of the biasing member 135. When the upper and lower members 134 are further raised, and the oblique surface of the upper and lower members 134 pushes the rear oblique surface of the horizontal member 133 upward, the horizontal member 133 and the pin 132 slide forward, that is, the pin 132 The upper frame 121R is fixed to the height adjustment mechanism 130 and the vertical frame 101R by entering the adjustment holes 1211R.

In this state, when the user pushes the lower portion of the operation lever 131 forward, the upper and lower members 134 are further pushed up by the lower contact portion 131Y of the operation lever 131 as shown in FIG. The horizontal surface of the horizontal member 133 and the pin 132 further slide forward by the upper surface of the rear of the horizontal member 133 pushing up the lower surface of the rear of the horizontal member 133 upward. By this, the front surface of the upper and lower members 134 presses the rear surface of the horizontal member 133 forward. As a result, the front surface 133Z of the horizontal member 133 pushes the rear surface of the upper frame 121R forward, that is, the horizontal member 133 presses the upper frame 121R against the inner surface of the vertical frame 101R, and rattling the vertical frame 101R of the upper frame 121R It is prevented.
<Brake mechanism>

  Next, a brake mechanism 140L according to the present embodiment will be described with reference to FIG. 27 and FIG. FIG. 27 is a perspective view showing an assembled structure of the brake mechanism 140L of the walking vehicle 100 according to the present embodiment. FIG. 28 is a side view showing the inside of the cover 148L of the brake mechanism 140L of the walking vehicle 100 according to the present embodiment. Although the brake mechanism 140L on the left side of the walking vehicle 100 will be described below, since the brake mechanism 140R on the right side of the walking vehicle 100 has the same configuration, the description will not be repeated here.

  The brake mechanism 140L mainly includes a handle base 122L, a brake lever 141L, a wire 145L, a pivot pin 147L, and covers 148L and 149L. The configuration around the rear wheels 108L and 108R ahead of the brake wire 145L, such as the brake bodies 143L and 143R such as brake shoes and adjusters, is the same as a normal one, and therefore the description will not be repeated here.

  The brake may be applied to the rear wheels 108L and 108R, may be applied to the front wheels 107L and 107R, or may be pressed from the inside to the outside of the tire. The tire may be pressed from the outside to the inside, may be pressed to the side of the tire, or may be a disc brake.

  The brake lever 141L is configured to be wide on the base side, in other words, a portion hidden by the covers 148L and 149L, in other words, a portion located on the side of the handle base 122L. A heart-shaped slit 141X through which the pivot pin 147L passes is formed on the base side. Further, a convex portion 141Y used as a fulcrum at the time of normal braking is formed at the front upper portion on the base side, and an abutting portion 141Z used as a fulcrum at the parking brake is formed at the rear lower part on the base side. And brake wire 145L is attached to the front lower part by the side of a base. The method of attaching the brake wire 145L to the brake lever 141L is not particularly limited, either, and the metal fitting at the end of the brake wire 145L may be fitted into the elongated hole of the front end of the brake lever 141L. The end may be directly attached to the hook or the like of the brake lever 141L.

  The handle base 122L is formed with a hole 122A through which the wire 145L passes and a hole 122X through which the pivot pin 147L passes. A concave portion 122Y for supporting the convex portion 141Y of the brake lever 141L at the time of normal braking is formed in the front upper portion of the handle base 122L. At the rear lower portion of the handle base 122L, an abutting portion 122Z substantially orthogonal to a side view in a side view where the abutting portion 141Z of the brake lever 141L abuts at the time of parking brake is formed.

  Then, the brake lever 141L is pivotally supported by the handle base 122L such that the pivot pin 147L penetrating the hole 122X of the handle base 122L is positioned in the slit 141X of the brake lever 141L. The handle base 122L and the base of the brake lever 141L are covered by the covers 148L and 149L.

  With this configuration, when the user applies an upward force to the rear portion of the brake lever 141L against the biasing force of the wire 145L during normal braking, as shown in FIG. The convex portion 141Y fits into the concave portion 122Y of the handle base 122L, and the rear portion of the brake lever 141L pivots upward about the concave portion 122Y. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R. When the user releases the brake lever 141L, the wire 145L is pulled, and the rear portion of the brake lever 141L pivots downward.

  On the other hand, at the time of parking brake, the user pushes the brake lever 141L downward against the urging force of the wire 145L. At this time, as shown in FIG. 30, the contact portion 141Z of the brake lever 141L contacts the contact portion 122Z of the handle base 122L, and the rear portion of the brake lever 141L pivots downward about the contact portion 122Z. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R.

More specifically, the brake lever 141L moves in a state where the slit 141X is restricted by the pivot pin 147L during the period from the non brake applied state to the parking brake applied state, that is, the pivot pin 147L The relative movement along the slit 141X causes the wire 145L to be pulled beyond the parking brake state to reach the parking brake state. As a result, even if the user releases the hand, the vehicle is maintained in the braked state without overcoming the state.
Second Embodiment (Form with Different Handles)

  In the first embodiment, as shown in FIG. 3, cylindrical grips 124L and 124R are attached to the handle frames 123L and 123R. However, it is not limited to such a form. For example, it is preferable to use a grip that is easy for the user to grip while walking with the walking car 100, and also when looking back and sitting on the seating surface 110. In the following, the grip on the left side of the walking vehicle 100 will be described, but the configuration of the grip on the right side is also the same, so the description will not be repeated here.

  FIG. 31 is a front perspective view of the walking vehicle 100 according to the present embodiment. FIG. 32 is a plan view of the walking vehicle 100 according to the present embodiment. FIG. 33 is a plan view of the left grip 224L according to the present embodiment. As shown in FIGS. 31, 32, and 33, the front and rear central portion 2241 of the grip 224L according to the present embodiment is largely raised in the inward direction of the walking vehicle 100. In the grip 224L, the rear portion 2242 slightly bulges in the inward direction of the walking vehicle 100.

As a result, the user can easily grip the grip 224L because the thumb can be brought into contact with the raised portion of the central portion 2241 from the front while walking with the walking car 100. On the other hand, when sitting on the seating surface 110, the user can easily arrange the thumb between the ridge of the rear portion 2242 and the ridge of the central portion 2241, and thus easily grip the grip 224L.
[Third embodiment (form in which the deflection reduction structure is different)]

  In the above embodiment, as shown in FIG. 18, the hooks 116L and 116R on the bearing surface frames 111L and 111R are put on the shaft 109R on the vertical frames 101L and 101R. However, it is not limited to such a form.

  FIG. 34 is an enlarged perspective view of the lower right portion of the seating surface 110 when the walking vehicle 100 according to the present embodiment is used. FIG. 35 is a front view of the walking car 100 when the walking car 100 according to the present embodiment is used. FIG. 36 is a front view of the walking car 100 in a state in which the left and right of the walking car 100 according to the present embodiment has started to be folded.

  First, the configuration of the right side of the walking vehicle 100 will be described with reference to FIGS. 34 and 35. A front base 1041R and a rear base 1042R are fixed at the top of the right vertical frame 101R in the left-right direction with a distance in the front-rear direction. An axis 109R is pivotally supported between the front base 1041R and the rear base 1042R. And in this embodiment, hook 216R is pivotally supported by axis 109R of vertical frame 101R.

  More specifically, in the present embodiment, the hook 216R is hooked from the outside of the walking vehicle 100 to the shaft 115R on the seat surface frame 111R side described later. Then, the ring 117R is attached to the lower part of the hook 216R. The hook 216R is biased in a direction to be hooked on the shaft 115R by a winding spring 218R or the like.

  A support member 114R is attached to the seat cushion frame 111R at a position located on the left of the vertical frame 101R. The support member 114R is formed in a portal shape in a side view of the walking vehicle 100, and a front rib 1141R and a rear rib 1142R are formed. A shaft 115R is pivotally supported between the front rib 1141R and the lower portion of the rear rib 1142R. In the present embodiment, the hook 216R is hooked to the shaft 115R from the right side. In a state where the hook 216R is hooked on the shaft 115R, the gap between the hook 216R and the front rib 1141R, the gap between the front rib 1141R and the front base 1041R, the gap between the hook 216R and the rear rib 1142R, the rear rib 1142R and the rear base 1042R It is preferable that a gap between them is about 0 mm to 3 mm, more preferably about 0 mm to 1 mm, and still more preferably about 0 mm to 0.5 mm.

  The configuration on the left side of the walking vehicle 100 is the same as the configuration on the right side, so the description will not be repeated here. The right ring 117 R and the left ring are connected by a belt 119. The belt 119 and the seat 110 are at least partially connected.

  Since it is comprised as mentioned above, when a user pulls up the seat 110 or the belt 119 upwards, as shown in FIG. 36, the lower part of the hooks 216L and 216R on either side walks via the rings 117L and 117R on either side. The hooks 216L and 216R are pulled toward the center of the vehicle 100, and the hooks 216L and 216R are disengaged from the shaft 115R on the side of the seat frame 111L and 111R. Then, the seat surface frames 111L and 111R are pulled upward, the connection frames 102L and 102R are folded, and the entire walking vehicle 100 is folded in the left-right direction.

[Fourth embodiment (form with different deflection reduction structure)]
The hooking configuration is not limited to such a configuration, and for example, as shown in FIG. 37, the support member itself may be a hook 314R having a recess for the shaft 109R. In other words, the hook 314R may be a support member. The hook 314R is biased in the direction of hooking on the shaft 109R by a winding spring 318R or the like.

Also in this case, it is preferable that the hook 314R be sandwiched between the front base 1041R and the rear base 1042R.
[Fifth embodiment (form with different deflection reduction structure)]

  In the above embodiment, on both left and right sides of the walking vehicle 100, the deflection preventing mechanisms such as the hooks 116L and 116R, the front base 1041R, and the rear base 1042R are provided. However, it is not limited to such a form. That is, only the right side of the walking vehicle 100 may have a deflection preventing mechanism such as the hook 116R, the front base 1041R, and the rear base 1042R. Conversely, only the left side of the walking vehicle 100 may have a hook 116L and a deflection preventing mechanism such as a front base or a rear base.

  Furthermore, in the above embodiment, the hooks 116L and 116R and the support member 114R are sandwiched by the front base 1041R and the rear base 1042R in the front-rear direction. Alternatively, the hook 216R is configured to be sandwiched by the support member 114R in the front-rear direction. However, even if forward movement of the hooks 116L and 116R and the support member 114R is restricted by the front base 1041R, and backward movement of the hooks 116L and 116R and the support member 114R is restricted by the rear base 1042R. Good. Alternatively, forward movement of the hook 216R may be restricted by the front rib 1141R of the support member 114R, and back movement of the hook 216R may be restricted by the rear rib 1142R of the support member 114R. That is, any one that suppresses the relative movement either forward or backward may be used.

As described above, when the seat 110 is used, the members on the side of the seat frames 111L and 111R and the members on the side of the vertical frames 101L and 101R are configured to overlap in a front view, Preferably, the relative movement can be limited by being configured to be pinched.
[Sixth embodiment (form having different height adjustment mechanism)]

  The handle height adjustment mechanisms 130R and 130L are not limited to those of the first embodiment as shown in FIG. For example, the upper and lower members and the horizontal member may be one member. Also in the present embodiment, height adjustment mechanisms 130L and 130R are attached to the upper ends of the vertical frames 101L and 101R. The configurations of the height adjustment mechanism 130L on the left side and the height adjustment mechanism 130R on the right side are the same, and therefore, the height adjustment mechanism 130R on the right side will be described below. In addition, the code | symbol of R and L regarding the height adjustment mechanism 130 is abbreviate | omitted for description.

  FIG. 38 is a partial cross-sectional side view of the vicinity of the height adjustment mechanism 130 of the handle according to the present embodiment. Referring to FIG. 38, upper frame 121R is interpolated from above in vertical frame 101R. A plurality of adjustment holes 1211, 1212, 1213, 1214, 1215, 1216 are formed in the height direction at the rear of the upper frame 121R.

  An adjustment case 139 is attached to an upper portion of the vertical frame 101R so as to surround the upper frame 121R. The adjustment case 139 accommodates the pin 132 which can be inserted into the adjustment holes 1211,..., The horizontal member 233, the biasing member 235, and the front end of the operation lever 231 inside the rear portion. The horizontal member 233 is slidable in the front-rear direction inside the adjustment case 139 integrally with the pin 132. In particular, it is preferable that the front surface 233Z of the horizontal member 233 be formed in a shape capable of surface contact with the outer peripheral surface of the upper frame 121R.

  The horizontal member 233 according to the present embodiment is biased from the rear to the front by the biasing member 235. The horizontal member 233 has a slit 233X in the vertical direction at the rear. The front end of the operation lever 231 is inserted into the slit 233X.

  With such a configuration, in the present embodiment, as shown in FIG. 38, when the lower part of the operation lever 231 is lifted rearward and upward, the front end of the operation lever 231 moves downward and rearward. Thereby, as shown in FIG. 39, the slit 233X of the horizontal member 233 is pulled backward, and the horizontal member 233 and the pin 132 slide rearward against the biasing member 235. As a result, the upper frame 121R can slide vertically with respect to the height adjustment mechanism 130 and the vertical frame 101R. In this state, the user adjusts the upper frame 121R to a desired height.

  When the upper frame 121R reaches a desired height and the user releases the control lever 231, as shown in FIG. 40, the horizontal member 233 and the pin 132 are biased forward by the biasing member 135. If the heights of the pins 132 and the adjustment holes 1211... Do not match, the pins 132 hit the outer periphery of the upper frame 121 R and do not enter the adjustment holes 1211.

  When the user slightly changes the height of the upper frame 121R and the height of the pin 132 matches the height of any of the adjustment holes 1211, the horizontal member 233 and the pin 132 are moved by the biasing force of the biasing member 235. Slide forward, that is, the pins 132 enter the adjustment holes 1211 and so on, and the upper frame 121R is fixed to the height adjustment mechanism 130 and the vertical frame 101R.

In this state, when the user pushes the lower portion of the control lever 231 forward, as shown in FIG. 41, the front end portion of the control lever 231 is pushed forward and upward, and the slit 233X of the horizontal member 233 is pushed forward. The member 233 and the pin 132 slide further forward. By this, the front surface 233Z of the horizontal member 233 pushes the rear surface of the upper frame 121R forward, that is, the horizontal member 233 pushes the upper frame 121R against the inner front surface of the vertical frame 101R. As a result, rattling of the vertical frame 101R of the upper frame 121R is prevented.
[Seventh Embodiment (Form with Different Height Adjustment Mechanism)]

  In the above embodiment, as shown in FIG. 21, the heights of the handle portions 120L and 120R are adjusted by rotating the operation levers 131 and 231. However, it is not limited to such a form. Also in the present embodiment, height adjustment mechanisms 130L and 130R are attached to the upper ends of the vertical frames 101L and 101R. Since the configurations of the height adjustment mechanism 130L on the left side and the height adjustment mechanism 130R on the right side are the same, the height adjustment mechanism 130R on the right side will be described below. In addition, the code | symbol of R and L regarding the height adjustment mechanism 130 is abbreviate | omitted for description.

  FIG. 42 is a partial cross-sectional side view of the vicinity of the height adjustment mechanism 130 of the handle according to the present embodiment. Referring to FIG. 42, upper frame 121R is interpolated from above in vertical frame 101R. A plurality of adjustment holes 1211, 1212, 1213, 1214, 1215, 1216 are formed in the height direction at the rear of the upper frame 121R.

  An adjustment case 139 is attached to an upper portion of the vertical frame 101R so as to surround the upper frame 121R. The adjustment case 139 accommodates therein a pin 132 which can be inserted into the adjustment holes 1211,..., A horizontal member 133, an upper and lower lever 331, and an urging member 135 inside a rear portion. The horizontal member 133 is slidable in the front-rear direction inside the adjustment case 139 integrally with the pin 132. In particular, it is preferable that the front surface 133Z of the horizontal member 133 be formed in a shape capable of surface contact with the outer peripheral surface of the upper frame.

  The upper and lower levers 331 according to the present embodiment are configured such that the rear portion protrudes rearward from the adjustment case 139 so that the user can operate the protruding portion up and down. The upper and lower levers 331 can slide in the vertical direction in accordance with the movement of the horizontal member 133. More specifically, the horizontal member 133 is configured to move forward as the upper and lower levers 331 move upward, and is configured to move rearward as the upper and lower levers 331 move downward. The upper and lower levers 331 are biased upward from below by the biasing member 135.

  With this configuration, in the present embodiment, as shown in FIG. 42, when the upper and lower levers 331 are slid downward against the biasing member 135, as shown in FIG. When the oblique surface of the upper and lower lever 331 pushes the oblique surface of the rear of the horizontal member 133 downward, the horizontal member 133 and the pin 132 slide rearward. As a result, the upper frame 121R can slide vertically with respect to the height adjustment mechanism 130 and the vertical frame 101R. In this state, the user adjusts the upper frame 121R to a desired height.

  When the upper frame 121R reaches a desired height and the user releases the vertical lever 331, the vertical lever 331 is urged by the urging member 135 in the upward direction, and the oblique surface of the vertical member 134 is a horizontal member. The horizontal member 133 and the pin 132 are urged forward by pushing up the oblique surface at the rear of 133 upward. If the heights of the pins 132 and the adjustment holes 1211... Do not match, the pins 132 hit the outer periphery of the upper frame 121 R and can not be inserted into the adjustment holes 1211.

  As shown in FIG. 44, when the user slightly changes the height of the upper frame 121R and the height of the pin 132 coincides with the height of any one of the adjustment holes 1211,..., As shown in FIG. The horizontal member 133 and the pin 132 slide forward, that is, the pin 132 is adjusted, when the upper and lower levers 331 are raised and the oblique surface of the upper and lower levers 331 pushes the oblique surface of the rear of the horizontal member 133 upward. The upper frame 121R is fixed to the height adjusting mechanism 130 and the vertical frame 101R by entering the holes 1211.

In this state, when the user further pushes the upper and lower levers 331 upward, as shown in FIG. 45, the lower oblique surface of the upper and lower levers 331 pushes the lower oblique surface of the rear of the horizontal member 133 upward. As a result, the horizontal member 133 and the pin 132 slide further forward. As a result, the front surface of the upper and lower lever 331 presses the rear surface of the horizontal member 133 forward. As a result, the front surface 133Z of the horizontal member 133 pushes the rear surface of the upper frame 121R forward, that is, the horizontal member 133 presses the upper frame 121R against the inner front surface of the vertical frame 101R. As a result, rattling of the vertical frame 101R of the upper frame 121R is prevented.
Eighth Embodiment (Form with Different Brake Mechanisms)

  In the above embodiment, the brake lever 141L normally brakes about the concave portion 122Y of the handle base 122L and the convex portion 141Y of the brake lever 141L as shown in FIG. 27, or the contact portion 122Z of the handle base 122L. The brake lever 141L applies the parking brake on the axis of the contact portion 141Z of the brake lever 141L. However, the shapes of the convex portion 141Y, the concave portion 122Y, and the contact portions 141Z and 122Z are not limited to such.

  FIG. 46 is a perspective view showing an assembled structure of the brake mechanism 140L of the walking vehicle 100 according to the present embodiment. FIG. 47 is a side view showing the inside of the cover 148L of the brake mechanism 140L of the walking vehicle 100 according to the present embodiment. Although the brake mechanism 140L on the left side of the walking vehicle 100 will be described below, since the brake mechanism 140R on the right side of the walking vehicle 100 has the same configuration, the description will not be repeated here.

  Referring to FIGS. 46 and 47, the brake mechanism 140L mainly includes a handle base 122L, a brake lever 141L, a wire 145L, a pivot pin 147L, and covers 148L and 149L. The configuration around the rear wheels 108L and 108R ahead of the brake wire 145L, such as the brake bodies 143L and 143R such as brake shoes and adjusters, is the same as a normal one, and therefore the description will not be repeated here.

  The brake lever 141L is configured to be wide on the base side, in other words, a portion hidden by the covers 148L and 149L, in other words, a portion located on the side of the handle base 122L. A heart-shaped slit 141X through which the pivot pin 147L passes is formed on the base side. Further, a convex portion 141Y used as a fulcrum at the time of normal braking is formed on the front upper portion on the base side, and a convex portion 141W used as a fulcrum at the parking brake is formed on the rear lower part on the base side. And brake wire 145L is attached to the front lower part by the side of a base.

  The handle base 122L is formed with a hole 122A through which the brake wire 145L passes and a hole 122X through which the pivot pin 147L passes. A concave portion 122Y for supporting the convex portion 141Y of the brake lever 141L at the time of normal braking is formed in the front upper portion of the handle base 122L. In the rear lower portion of the handle base 122L, a recess 122W for supporting the projection 141W of the brake lever 141L at the time of parking brake is formed.

  Then, the brake lever 141L is pivotally supported by the handle base 122L such that the pivot pin 147L penetrating the hole 122X of the handle base 122L is positioned in the slit 141X of the brake lever 141L. The handle base 122L and the base of the brake lever 141L are covered by the covers 148L and 149L.

  With this configuration, when the user lifts the brake lever 141L against the biasing force of the wire 145L at the time of normal braking, as shown in FIG. 48, the convex portion 141Y of the brake lever 141L is the handle base 122L. The brake lever 141L pivots upward about the recess 122Y. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R. When the user releases the brake lever 141L, the wire 145L is pulled and the brake lever 141L pivots downward.

  On the other hand, at the time of parking brake, the user pushes the brake lever 141L downward against the urging force of the wire 145L. Then, as shown in FIG. 49, the convex portion 141W of the brake lever 141L hits the concave portion 122W of the handle base 122L, and the brake lever 141L pivots downward about the concave portion 122W. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R.

More specifically, since the slit 141X moves along the pivot pin 147L while the brake lever 141L pivots downward, that is, the pivot pin 147L moves relatively along the slit 141X. The state where the wire 145L is pulled more than at the parking brake is overcome to realize the parking brake state. As a result, even if the user releases the hand, the brake is maintained.
[Ninth embodiment (form with different brake mechanism)]

  In the above embodiment, as shown in FIG. 27, the heart-shaped slit 141X is formed in the brake lever 141L. However, it is not limited to such a form. FIG. 50 is a perspective view showing an assembled structure of the brake mechanism 240L of the walking vehicle 100 according to the present embodiment. FIG. 51 is a side view showing the inside of one cover 148L and the handle bases 2221L and 2222L of the brake mechanism 240L of the walking vehicle 100 according to the present embodiment. In addition, although the brake mechanism 240L of the left side of the walking vehicle 100 is demonstrated below, since it has the same structure also about the brake mechanism of the right side of the walking vehicle 100, description is not repeated here.

  Referring to FIGS. 50 and 51, the brake mechanism 240L mainly includes a first handle base 2221L, a second handle base 2222L, a brake lever 241L, a wire 145L, a pin 147L, and a cover 148L, It consists of 149L. The configuration around the rear wheels 108L and 108R ahead of the brake wire 145L, such as the brake bodies 143L and 143R such as brake shoes and adjusters, is the same as a normal one, and therefore the description will not be repeated here.

  The brake lever 241L is configured to be wide on the base side, in other words, a portion hidden by the covers 148L and 149L, in other words, a portion located on the side of the handle bases 2221L and 2222L. On the base side, pins 241X and 241X are provided upright on both left and right sides. Further, a convex portion 241Y used as a fulcrum at the time of normal braking is formed at the front upper portion on the base side, and an abutting portion 241Z used as a fulcrum at the parking brake is formed at the rear lower part on the base side. And brake wire 145L is attached to the front lower part by the side of a base.

  The handle bases 2221L and 2222L are configured substantially symmetrically, and heart-shaped slits 2221X and 2222X through which pins 241X and 241X of the brake lever 241L pass respectively are formed. The front upper portion of the handle bases 2221L and 2222L is formed with a recess 2221Y for supporting the projection 241Y of the brake lever 241L during normal braking. At the rear lower portion of the handle bases 2221L and 2222L, an abutting portion 2221Z is formed, to which the abutting portion 241Z of the brake lever 241L abuts at the time of parking brake.

  The brake lever 241L is pivotally supported by the handle bases 2221L and 2222L so that the pins 241X and 241X of the brake lever 241L are positioned in the slits 2221X and 2221X of the handle bases 2221L and 2222L. The handle bases 2221L and 2222L and the base of the brake lever 241L are covered by covers 148L and 149L.

  With this configuration, when the user lifts the brake lever 241L against the biasing force of the wire 145L during normal braking, as shown in FIG. 52, the projection 241Y of the brake lever 241L is the handle base 2221L. , 2222L, and the brake lever 241L pivots upward about the recess 2221Y. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R. When the user releases the brake lever 241L, the wire 145L is pulled and the brake lever 241L pivots downward.

  On the other hand, at the time of parking brake, the user pushes the brake lever 241L downward against the urging force of the wire 145L. As shown in FIG. 53, the contact portion 241Z of the brake lever 241L contacts the contact portions 2221Z of the handle bases 2221L and 2222L, and the brake lever 241L pivots downward about the contact portion 2221Z. As a result, the wire 145L is pulled to generate a braking force on the rear wheels 108L and 108R.

  More specifically, since the pin 241X moves along the slits 2221X and 2222X while the brake lever 241L pivots downward, the brake lever 241L is a parking brake because the wire 145L is pulled beyond the parking brake. Realize the state. As a result, even if the user releases the hand, the brake is maintained.

(Summary)
According to the above embodiment, the height adjusting mechanism 130R includes the inner pipe 121R in which the plurality of height adjusting holes 1211, 1212, ... is formed, and the outer pipe 101R through which the inner pipe 121R is slidably inserted. , A cover 139 disposed at the end of the outer pipe 101R, a pin 132 disposed inside the cover 139 and insertable into the height adjustment holes 1211, 1212,... By sliding horizontally, and the cover 139 And a pressing member 133 that comes into surface contact with the inner pipe 121R by sliding horizontally in unison with the pin 132.

  Preferably, a biasing member 135 is further provided to bias the pin 132 and the pressing member 133 in the direction of the inner pipe 121R.

  Preferably, there is further provided a member 134 for inserting the pin 132 into the height adjustment 1211, 1212, ... and pressing the pressing member 133 against the inner pipe 121R.

  Preferably, it further includes a control lever 131 that is pivotable to move the pin 132 and the pressing member 133 in the horizontal direction.

  Preferably, the apparatus further includes an operation member 331 which is slidable to move the pin 132 and the pressing member 133 in the horizontal direction.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the above description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

100: walking car 101L: vertical frame 101R: vertical frame 102L: main connecting frame 102R: main connecting frame 102X: axis 103L: front cover 103R: front cover 105L: sub connecting frame 105R: sub connecting frame 106L: sub connecting frame 106R: Sub connection frame 107L: front wheel 107R: front wheel 108L: rear wheel 108R: rear wheel 109: shaft 109R: shaft 110: seat 110A: front 110B: rear 110X: grip 111L: seat frame 111R: seat frame 112 : Backrest 113L: Seat surface elevation frame 113R: Seat surface elevation frame 114R: Support member 115R: Shaft 116L: Hook 116R: Hook 117R: Hook 118R: Ring spring 119: Wire 120L: Handle portion 120 : Handle portion 121L: Upper frame 121R: Upper frame 122A: Hole 122L: Handle base 122R: Handle base 122W: Recess 122X: Hole 122Y: Recess 122Z: Contact portion 123L: Handle frame 123R: Handle frame 124L: Grip 124R: Grip 130L: height adjustment mechanism 130R: height adjustment mechanism 131: control lever 131X: upper abutment portion 131Y: lower abutment portion 132: pin 133: horizontal member 133Z: front surface 134: upper and lower member 135: biasing member 139: adjustment case 140L: brake mechanism 140R: brake mechanism 141R: brake lever 141W: convex part 141X: slit 141Y: convex part 141Z: abutting part 143L: brake main body 143R: brake main body 145R: brake wide -147R: pivot pin 148R: cover 149R: cover 150: bag 160L: cover for tipping 160R: cover for tipping 160X: convex portion 216L: hook 216R: hook 218R: winding spring 224L: grip 233: horizontal member 233X: slit 233Z Reference: Front face 235: biasing member 240L: brake mechanism 241R: brake lever 241X: pin 241Y: convex portion 241Z: contact portion 314R: hook 318R: winding spring 331: upper and lower levers 1012L: front frame 1012R: front frame 1041R: front base 1042R: rear base 1101: rear portion 1141R: front rib 1142R: rear rib 1161R: concave portion 1162R: hole 1211: adjustment hole 2221R: first handle base 2221X: slit 2221 Y: concave portion 2221 Z: contact portion 2222 R: first handle base 2222 X: slit 2241: central portion 2242: rear

Claims (5)

Height adjustment mechanism,
An inner pipe with a plurality of height adjustment holes formed,
An outer pipe through which the inner pipe is slidably inserted;
A cover disposed at an end of the outer pipe;
A pin disposed inside the cover and insertable into the height adjustment hole by sliding horizontally;
And a pressing member disposed inside the cover and brought into surface contact with the inner pipe by horizontally sliding integrally with the pin.   The height adjustment mechanism according to claim 1, further comprising a biasing member for biasing the pin and the pressing member toward the inner pipe.   The height adjustment mechanism according to claim 1, further comprising a member for inserting the pin into the height adjustment and pressing the pressing member against the inner pipe.   The height adjustment mechanism according to any one of claims 1 to 3, further comprising a control lever that is pivotable to horizontally move the pin and the pressing member.   The height adjustment mechanism according to any one of claims 1 to 3, further comprising a control member that is slidable to move the pin and the pressing member in the horizontal direction.