JP2002113047A - Fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting capable of easily and firmly fitting a part to an object having a fitting part extended in a curved state, for an example, fitting a headrest to a handle of a wheelchair. SOLUTION: This fitting 1 for fitting the headrest 4 to the wheelchair 3 having the fitting part 21 extending in the curved state of outward projecting circular arc shape, is provided with a fitting body 38 and a fixing bolt 41. The fitting body 38 has a cover wall 44 mounted to the fitting part 21 from the outside and having an inner side face 44a of circular arc shape extending along the outer circular arc face 21a of the fitting part 21, and two side walls 45a, 45b extending to oppose to each other over the circular arc face 21a of the fitting part 21 and the inner side face 21b on the opposite side. The fixing bolt 41 is fitted between two side walls 45a, 45b in the state of abutting on the inner side face 21b of the fitting part 21, to fix the fitting body 38 to the fitting part 21. The radius of curvature of the inner side face 44a of the cover wall 44 is smaller than that of the circular arc face 21a of the fitting part 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to, for example, a mounting bracket for mounting a wheelchair headrest on a handle for an assistant to push a wheelchair, and has a mounting portion extending in an arcuate shape. The present invention relates to a mounting bracket for mounting a component on an object.

[0002]

2. Description of the Related Art Conventionally, as a mounting bracket for mounting a headrest for a wheelchair (hereinafter simply referred to as "headrest" in the present specification) to a wheelchair, Japanese Patent Application Laid-Open No. H11-24 is disclosed.
The thing described in 4336 gazette is known. This mounting bracket attaches a headrest to a pair of left and right handles of a wheelchair, and has a pair of left and right cylindrical cylinders that can be inserted into both handles. Usually, a handle of a wheelchair is connected to a frame made of a metal pipe material or the like, and is provided so as to extend from the back of the wheelchair toward the rear and substantially horizontally or slightly downward. Specifically, the two handles are arranged on the rear side of the wheelchair at intervals in the left-right direction and connected to the upper ends of frame portions (hereinafter, referred to as “rear frame portions”) extending in the up-down direction, respectively. It bends substantially at right angles to the rear part, and extends straight further toward the rear (hereinafter, the straight extending part is referred to as a "handle straight part").

When a headrest is attached to a wheelchair having such a handle by a mounting bracket having a pair of left and right cylinders, the cylinders are previously fixed to both left and right ends of a predetermined support member for supporting the headrest. Then, insert the cylinder into the handle straight section. Then, the set screw provided in each cylinder is screwed into the inside of the cylinder, whereby the tip of the set screw is strongly pressed against the handle straight portion in the cylinder.
Thereby, the headrest is attached to the handle of the wheelchair via the two cylindrical bodies.

[0004]

Generally, a grip made of rubber or the like is inserted into the handle straight portion in advance from the tip of the handle and fixed to the handle of the wheelchair so that the handle can be easily gripped by a caregiver. (See grip 23 in FIG. 1). In this case, since the handle straight portion is largely covered with the grip, the straight portion of the handle becomes extremely short, and it becomes impossible to insert the cylindrical body of the mounting bracket into the handle. Of course, it is possible to insert the cylinder through the handle with the grip removed from the handle. However, in this case, before inserting the cylinder into the handle,
That is, prior to mounting the headrest, the grip firmly fixed with an adhesive or the like must usually be removed from the handle, which makes the mounting work of the headrest extremely complicated. In addition, when the headrest attached to the handle is removed, there is no need to remove the grip from the handle.Therefore, the caregiver who removed the headrest must attach the grip, and such a grip must be removed. A series of operations for removing the headrest, including installation, is also complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and a headrest can be easily and firmly attached to a handle of a wheelchair without removing a grip from the handle. A mounting bracket that allows components to be easily and firmly mounted on an object having a mounting portion that extends in a curved state, such as a headrest that can be easily removed even after mounting, and that can be easily removed. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION A mounting bracket according to the present invention is a mounting bracket for mounting a component on an object having a mounting portion extending in a state of being convexly curved outwardly and in an arc shape. A cover wall which is mounted from the outside and has an arc-shaped inner surface extending along the outer arc surface of the mounting portion, and from both ends of the cover wall, the inner wall surface on the opposite side to the arc surface of the mounting portion from each other. A metal fitting body having two side walls extending so as to face each other, and
A fixing member fixed between the two side walls and fixing the metal fitting body to the mounting portion, wherein a radius of curvature of an inner surface of the cover wall is smaller than that of an arc surface of the mounting portion.

[0007] According to this configuration, the metal fitting body mounted on the mounting portion extending in a state of being curved outwardly convexly in an arc shape has the cover wall and the two side walls, and the curvature of the inner surface of the cover wall. Since the radius is smaller than that of the circular arc surface of the mounting portion, the cover wall contacts the circular arc surface of the mounting portion at two points on the inner surface at both ends in the extending direction. In addition, by attaching the fixing member between the two side walls, the fixing member contacts the inner surface of the mounting portion. In other words, the mounting bracket is provided with three mounting portions at two locations on the arc surface and one location on the inner side surface, with the mounting portion extending in an arcuate manner interposed therebetween by the cooperation of the fitting body and the fixing member. It will be in the state supported by. Thereby, the metal fitting body is prevented from moving and rotating in the extending direction of the mounting portion, and furthermore, by the two side walls,
Rotation around the axis in the extending direction of the mounting portion is also prevented. Therefore, if the metal fitting body is fixed to the component, the component can be easily and firmly attached to an object having the above-described attachment portion. In addition, by removing the fixing member from the metal fitting main body, the metal fitting main body can be removed from the mounting portion. As a result, the above-mentioned component can be easily removed from the object having the mounting portion.

In this case, it is preferable that the object and the component are a wheelchair and a headrest for a wheelchair, respectively, the attachment portion is provided on a handle of the wheelchair, and the metal fitting body is fixed in advance to the headrest for the wheelchair.

Generally, a handle of a wheelchair has a portion (handle bent portion) which extends in a curved state, and which extends straight from the handle bent portion (handle straight portion). A grip is attached to the handle straight section. Therefore, by mounting the bracket main body previously fixed to the wheelchair headrest on the handle curved portion as the mounting portion and fixing it using the fixing member, the wheelchair headrest can be removed without removing the grip from the handle straight portion. Can be securely attached to Further, even after the wheelchair headrest is attached, the wheelchair headrest can be easily removed from the wheelchair by removing the fixing member from the metal fitting body.

In these cases, the fixing member is formed of a bolt, and the distance between the two side walls is slightly larger than the dimension of the mounting portion in that direction, and the mounting portion is clamped by tightening the bolt. It is preferable to be constituted so that.

According to this structure, the mounting portion can be strongly clamped by the two side walls by tightening the bolt as the fixing member. As a result, the metal fitting body can be more firmly fixed to the mounting portion without rattling.

In this case, it is preferable that a tightening lever extending in a direction perpendicular to the axis of the bolt is provided on the head of the bolt.

According to this configuration, the bolt can be easily tightened with a small force by turning the tightening lever without using a tool such as a wrench.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a wheelchair to which a headrest is attached via an attachment according to an embodiment of the present invention. This mounting bracket 1
The headrest 4 is attached to a general wheelchair 3 having a pair of left and right handles 2 (only one is shown).
(Only one is shown) is attached to the handle 2. In the following description, prior to the description of the mounting bracket 1,
First, the wheelchair 3 and the headrest 4 will be briefly described.

The wheelchair 3 is of a foldable type in which a frame 11 is made of a metal pipe or the like. The frame 11 has a pair of left and right large wheels 12, a caster 13, and a footrest 14 (each of which has one Only one is shown), and a cloth seat 15 and a backrest 16 are attached. The frame 11 is disposed on the rear side of the wheelchair 3 with a gap in the left-right direction, and a pair of left and right rear frame portions 11a extending in the vertical direction.
(Only one is shown) and each rear frame 11
Each handle 2 is provided in series with the upper end of a.

As shown in FIGS. 1 and 2, each handle 2 is bent substantially perpendicularly to the rear frame portion 11a and is curved in an arc shape, and further from the handle curved portion 21. And a handle straight portion 22 that extends straight toward the front. The handle bending portion 21 has a fitting main body 3 (described later) of the mounting fitting 1.
8 is attached. On the other hand, the handle straight portion 22 is fixed with a grip 23 made of rubber, synthetic resin, or the like inserted therein, and has a brake lever 24 attached thereto.

On the other hand, the headrest 4 has a headrest main body 25 for supporting the head of a person sitting in the wheelchair 3 from behind, and a support 26 for supporting the headrest main body 25 in a position adjustable in the front-rear direction and the vertical direction. are doing. The support body 26 is made of a metal pipe material or the like, and a horizontal cylinder 31 extending horizontally in the front-rear direction, and slides in the horizontal cylinder 31 in the front-rear direction. A horizontal slider 33 to which the headrest body 25 is fixed, a vertical cylinder 34 disposed below the horizontal cylinder 31 and extending in the vertical direction, and slides in the vertical cylinder 34 in the vertical direction. A fixed vertical slider 35, an arm housing tube 36 fixed to the front surface of the vertical tube 34 and extending horizontally in the left-right direction so as to be orthogonal to the vertical slider 35, and a half portion in the left-right direction is housed in the arm housing tube 36, respectively. A pair of left and right arms 37 (only one is shown), and a metal fitting body 38 fixed to the distal end of each arm 37 and attached to the handle bending portion 21 of the handle 2 and the like.

With the support 26 configured as described above,
The position of the headrest body 25 is adjusted as follows. That is, when the position is adjusted in the front-rear direction, the head slider main body 25 is positioned at a desired position in the front-rear direction by sliding the horizontal slider 33 in the front-rear direction with respect to the horizontal cylinder 31, and while holding this, The set screw 31a provided on the horizontal cylinder 31 is screwed. As a result, the horizontal slider 33 is fixed to the horizontal cylinder 31, and accordingly, the position of the headrest body 25 in the front-rear direction is maintained at a desired position. On the other hand, when adjusting the position in the vertical direction,
On the other hand, by sliding the vertical slider 35 in the vertical direction, the headrest main body 25 is positioned at a desired position in the vertical direction, and the set screw 34a provided in the vertical cylinder 34 is screwed in while holding this. Thereby, the vertical slider 3
5 is fixed to the vertical cylinder 34, and accordingly, the vertical position of the headrest main body 25 is held at a desired position.

Each of the pair of right and left arms 37 is
It can slide freely in the left and right direction with respect to the arm housing cylinder 36,
Further, it is fixed at a desired position by a set screw 36a provided on the arm housing cylinder 36 or the like. This makes it possible to easily adjust the left-right distance between the fitting bodies 38 of the two arms 37, and to attach the headrest 4 in accordance with the width of the wheelchair 3 (the distance between the handles 2).

Next, the mounting fitting 1 having the fitting main body 38 will be described with reference to FIGS.
Since the two mounting brackets 1 mounted on the left and right handles 2 are symmetrical to each other, the following description focuses on the mounting bracket 1 on the right side of the wheelchair 3. Further, in the following description, as shown in FIG. 4, on the outer peripheral surface of the handle bending portion 21, a portion curved outwardly is defined as an outer surface 21 a (arc surface), and a portion opposite to the outer surface 21 a is defined as an inner surface. The left and right portions between the side surface 21b and the outer side surface 21a and the inner side surface 21b are respectively
1c and right side surface 21d.

The mounting bracket 1 includes the metal fitting body 38 mounted on the handle curved portion 21 of the handle 2 while covering the handle curved portion 21, and a fixing bolt 41 for fixing the metal fitting body 38 to the handle curved portion 21. And a nut 42 screwed into the nut 41 and a bolt tightening lever 43 provided on the head 41a of the fixing bolt 41.

The metal fitting body 38 is formed along the outer surface 21a of the handle curved portion 21. The cover wall 44 covers the outer surface 21a, and the right and left ends of the cover wall 44 form the inside of the handle curved portion 21. A pair of left and right side walls 45 (left side wall 45) extending beyond the side surface 21 b so as to face each other
a, right side wall 45b). As a result, the metal fitting body 38 has a fan-shaped side shape and a vertical U-shaped cross section (cross section taken along line BB in FIG. 3) (see FIG. 4B).

As shown in FIG. 4A, the radius of curvature of the arc-shaped surface of the cover wall 44 on the handle curved portion 21 side (hereinafter referred to as the “cover wall inner side surface 44a”) is equal to that of the handle curved portion 21. It is smaller than that of the outer side surface 21a. For this reason, when the metal fitting body 38 is attached to the handle bending portion 21, the cover wall 44 is
The outer surface 21a of the handle curved portion 21 abuts at two positions (points P and Q) of the front end and the rear end of 4a.

On the other hand, the left side wall 45a and the right side wall 45b are respectively formed with opposing fool holes 45c, 45c at predetermined positions near the apex. Stupid hole 45
Each of c and 45c is formed in a size that allows a shaft portion 41a of the fixing bolt 41 to be described later to be inserted. When the shaft portion 41a of the fixing bolt 41 is inserted into these fool holes 45c and 45c, the fixing is performed. The bolt 41 is attached to the inner surface 21 of the handle bending portion 21 at one point (point R) in the middle of the shaft portion 41a.
b.

The fixing bolt 41 is slightly longer than the lateral width (width in the left-right direction) of the metal fitting body 38 and has the above-mentioned shaft portion 41a having an external thread formed on the surface thereof, and a head provided at one end of the shaft portion 41a. And a portion 41b. The head 41b has a through hole 41c extending in a direction perpendicular to the axis of the shaft portion 41a.
Further, the bolt tightening lever 43 is loosely inserted in a retaining state. The nut 42 is fixed to the outer surface of the left side wall 45a of the fitting body 38 by welding or the like so that the center coincides with the fool hole 45c.

Here, the procedure for attaching the headrest 4 to the wheelchair 3 using the attachment 1 will be briefly described. In addition, in the mounting bracket 1 before mounting the headrest 4,
The fixing bolt 41 is not attached to the metal fitting body 38.

When the headrest 4 is attached to the wheelchair 3, first, the left and right arms 37 are slid in the left and right directions as appropriate to adjust the distance between the left and right metal fitting main bodies 38 to the left and right handles 2 ( The distance between the handle curved portions 21) is matched. Next, the two metal fitting main bodies 38 are mounted on the both handle curved portions 21 from the outer surface 21a side. As described above, by attaching the metal fitting body 38 to the handle bending portion 21, the cover wall 44 of the metal fitting body 38 is
At points P and Q, the outer surface 21a of the handle bending portion 21
Abut. The arms 37 are fixed to the arm housing 36 before and after the fitting body 38 is mounted.

Thereafter, the shaft portion 41a of the fixing bolt 41 is
From the side wall 45 (the right side wall 45b in the case of the right fitting body 38 in FIG. 3) of the fitting body 38, the two holes 45
c, 45c and screwed into the nut 42. Accordingly, as described above, the shaft portion 41a of the fixing bolt 41 contacts the inner surface 21b of the handle curved portion 21 at the point R.
When screwing the fixing bolt 41 to the nut 42, the bolt tightening lever 43 is slid appropriately through the through hole 41c of the fixing bolt 41, and the end of the fixing bolt 41 on the side opposite to the head 41b is pushed down. Fixing bolt 4
By rotating the fixing bolt 41 in a predetermined direction,
Can be easily tightened.

Further, with the fastening of the fixing bolt 41, the left side wall 45a and the right side wall 4
5b flex to approach each other. As a result, the side surfaces 21c and 21d of the handle bending portion 21 are sandwiched between the left and right sides by the side walls 45a and 45b of the fitting body 38, and the left side wall 4
5a and the right side wall 45b are pressed strongly against the left side surface 21c and the right side surface 21d, respectively (S
Line, S line).

Conversely, when the headrest 4 is to be removed from the wheelchair 3, the fixing bolt 41 is rotated in the opposite direction to the above-described tightening, and is removed from the fitting body 38. afterwards,
When the headrest 4 is slightly lifted, the metal fitting body 38 comes off the curved handle portion 21, whereby the headrest 4 can be easily removed from the wheelchair 3. Therefore, when the headrest 4 is unnecessary or when the wheelchair 3 needs to be folded, the headrest 4 can be easily removed.

As described in detail above, according to the mounting bracket 1 of the present embodiment, the bracket main body 38 is mounted on the handle curved portion 21 and fixed using the fixing bolt 41.
The mounting bracket 1 is formed by the cooperation of the metal fitting body 38 and the fixing bolt 41, with the handle curved portion 21 interposed therebetween, and at two positions (points P and Q) on the outer side surface 21a and on the inner side surface 21b.
A total of three points (points R) are supported by the handle bending portion 21. Thus, the metal fitting body 38 is prevented from moving and rotating in the extending direction of the handle bending portion 21, and is also prevented from rotating about the axis in the extending direction of the handle bending portion 21 by the left side wall 45 a and the right side wall 45 b. . In addition, by firmly tightening the fixing bolt 41, the left side surface 21c and the right side surface 21d of the handle curved portion 21 are attached to the left and right side walls 45a, 45
b strongly clamps from the left and right directions (S line, S line
line). Therefore, the headrest 4 to which the metal fitting body 38 is fixed in advance can be easily and firmly attached to the wheelchair 3 without removing the grip 23 without play. Thus, the person using the wheelchair 3
The headrest 4 can stably support one's own head, and the user can sit in a comfortable posture without putting a burden on the neck. Also, even after the headrest 4 is attached,
The headrest 4 can be easily removed from the wheelchair 3 simply by removing the fixing bolts 41 from the left and right fitting main bodies 38, respectively.

In the headrest 4, since the headrest main body 25 and the bracket main body 38 are provided at the upper front end and the lower front end of the support 26 having a substantially U-shaped side surface, respectively, The position of the headrest main body 25 in the front-rear direction can be largely changed only by slightly shifting the mounting position with respect to the handle bending portion 21 in the front-rear direction. Thus, a large adjustment stroke of the headrest body 25 in the front-back direction can be ensured.

Further, the present invention is not limited to the headrest mounting bracket of the above-described embodiment, but may be any mounting member having a portion extending in an arcuately curved shape protruding outward. As a part, a part can be attached to this attachment part via the attachment fitting of the present invention. For example, the mounting bracket of the present invention is applied as a mounting bracket for a satellite broadcasting antenna or the like, and if the veranda has the above mounting portion, the antenna can be easily and firmly mounted on the veranda without rattling. It can be easily removed when no longer needed. In addition, the detailed configuration of the metal fitting body 38 and the fixing bolt 41 shown in the embodiment are merely examples, and can be appropriately changed within the scope of the present invention.

[0034]

As described in detail above, the mounting bracket of the present invention allows the headrest to be easily and firmly attached to the handle without removing the grip from the handle of the wheelchair, and the mounting after the headrest is attached. However, there is an effect that the component can be easily and firmly attached to an object having a mounting portion extending in a curved state, such as the headrest can be easily removed, and the removal can be easily performed.

[Brief description of the drawings]

FIG. 1 is a view showing a mounting bracket according to an embodiment of the present invention;
It is a side view which shows the wheelchair which attached the headrest.

FIG. 2 is a side view showing, on an enlarged scale, the periphery including a mounting bracket and a headrest of FIG. 1;

FIG. 3 is an enlarged perspective view showing a mounting bracket.

4A and 4B are diagrams for explaining a relationship between a mounting bracket and a curved portion of a handle, wherein FIG. 4A is a cross-sectional view taken along line AA of FIG. 3, and FIG. 4B is a line BB of FIG. It is sectional drawing cut | disconnected by.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mounting bracket 2 Handle 3 Wheelchair 4 Headrest 21 Handle curved part 21a Outer side surface (arc surface) 21b Inner side surface 22 Handle straight part 23 Grip 25 Headrest main body 38 Metal fitting main body 41 Fixing bolt 43 Bolt tightening lever 44 Cover wall 44a Cover wall Side 45 Side wall

Claims (4)

[Claims] 1. A mounting bracket for mounting a component to an object having a mounting portion extending in a state of being curved in an arc shape so as to protrude outward, wherein the mounting bracket is mounted on the mounting portion from outside, and is provided outside the mounting portion. A cover wall having an arc-shaped inner surface extending along the arc surface, and two side walls extending from both ends of the cover wall so as to face each other over the inner surface of the mounting portion opposite to the arc surface. And a fixing member attached between the two side walls while being in contact with the inner side surface of the mounting portion, and a fixing member for fixing the metal fitting body to the mounting portion. A mounting bracket, wherein a radius of curvature of the inner side surface is smaller than that of the arc surface of the mounting portion. 2. The object and the part are a wheelchair and a headrest for a wheelchair, respectively, wherein the mounting portion is provided on a handle of the wheelchair, and the metal fitting body is fixed to the headrest for the wheelchair in advance. The mounting bracket according to claim 1, wherein: 3. The fixing member is formed by a bolt, and a distance between the two side walls is slightly larger than a size of the mounting portion in that direction, and the mounting is performed by tightening the bolt. The mounting bracket according to claim 1, wherein the mounting bracket is configured to sandwich the portion. 4. The mounting bracket according to claim 3, wherein a fastening lever extending in a direction perpendicular to an axis of the bolt is provided on a head of the bolt.