JP2015058029A - Bracket of arm support for wheel chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bracket of arm support capable of mounting a wide arm support.SOLUTION: A bracket for mounting a widely formed arm support AS for wheel chair to a frame pipe P comprises a base plate 2 and a holding attachment 6. The base plate is formed with a flat, plate-like body and comprises: a long hole 2a which is screwed to a plurality of screw holes arranged in a row on a back surface plate 1 of the arm support, for example, at least two screw holes 3a, 3b with at least two screws B; a locking hole 2b for locking a locking tongue piece 6a formed at the tip part of the holding attachment; and a through screw rod 4 which is erected toward the pipe side to penetrate a screw hole of the frame pipe. The holding attachment is a shallow angled, nearly cross-section S shaped member and has a locking tongue piece, which is fitted to a locking hole, at its tip part and a screw rod hole 6c, which inserts the through screw rod of the base plate, at its rear end side.

Description

  The present invention is applicable to all wheelchairs, even if the wheelchairs have different specifications due to differences in manufacturers, especially those with different frame pipe diameters and different armrest mounting allowances. The present invention relates to a metal fitting for attaching an arm support (hereinafter sometimes referred to as an armrest) that can be attached later and has a stable and good feeling of use.

  As an example, most of the arm supports of existing wheelchairs have a width of 35 mm. However, it is known that the arm supports of this width have a problem that the arms easily slip off.

  Therefore, in the present invention, the arm support is formed to have a wide width of about 100 mm, for example, and the arm support can be stably supported so that the arm of the wheelchair user does not slide down. It is an object of the present invention to provide a mounting bracket for an arm support capable of mounting the above wide arm support even if the outer diameter of the frame pipe of the part is different or the length of the mounting portion of the arm support is different. .

  The structure of the mounting bracket of the present invention made for the purpose of solving the above problems is a mounting bracket for mounting a wide arm support for a wheelchair to a mounting frame pipe, and the bracket is a base plate. The base plate is formed of a flat plate-like body, and is elongated by a plurality of screw holes arranged on the back plate of the arm support, and a tip end portion of the clamping attachment A holding hole that engages with a locking tongue piece formed on the frame pipe, and a through screw rod that stands up toward the pipe side so as to pass through the arm support mounting screw hole of the frame pipe. Is a member having an approximately S-shaped section with a shallow angle, the front end portion having the locking tongue piece and the rear end side having a through screw for the base plate. The bracket is attached to the frame pipe of the wheelchair by inserting the through screw の of the base plate into the screw hole of the frame pipe and the locking tongue piece of the base plate. A frame pipe for mounting the arm support by inserting the screw rod into the screw hole of the holding attachment engaged with the locking hole with or without a washer and fastening the screw rod with a nut. At least two mounting screws, for example, at least two screw holes provided on the back plate of the arm support through the long holes of the base plate of the metal fittings, are fixed to the metal fittings. It is characterized in that a support is attached.

  In the above configuration of the present invention, the back plate of the arm support is provided with a screw hole for mounting the base plate. The screw hole, as an example, has a back surface of a wide arm support having a width of 100 mm and a length of 350 mm. Six plates are provided at a pitch of approximately 40 to 42 mm on one side in the plate length direction. In addition, the screw hole row | line | column shown in figure is provided in parallel with the space | interval of about 24 mm as an example along the length direction of an arm support. This is because the position of the frame pipe in the width direction of the arm support can be changed.

On the other hand, the screw hole for the through screw rod for stopping the through screw rod provided in the clamping attachment is provided on the opposite side to the locking piece provided on the tip side of the clamping attachment.
In the present invention, the arrangement of the screw holes is an example, and the pitch of the screw holes can be set as appropriate.

In the metal fittings of the present invention, one to three washers having a thickness of 1 mm are used as an example according to the outer diameter of the frame pipe, but they are assembled by fitting a locking tongue piece into the locking hole of the base plate. When the gap formed between the holding attachment and the base plate is the same as the outer diameter of the frame pipe, it is not necessary to use a washer at all.
In other words, the outer diameter of the frame pipe in the wheelchair to which the arm support is attached is often 20 mm, 19 mm, and 17 mm. If the frame pipe is 19 mmΦ, one washer is used. If the frame pipe is 17 mmΦ, three washers are used.

  The present invention is a mounting bracket for mounting a wide arm support for a wheelchair to a frame pipe, the bracket comprising a base plate and a clamping attachment, and the base plate is formed of a flat plate-like body. A plurality of, for example, at least two screw holes arranged in a row on the back plate of the arm support and screwed with at least two screws, and a locking tongue formed at the front end of the clamping attachment And a through screw rod erected toward the pipe in order to penetrate the screw hole of the frame pipe, and the clamping attachment is a member having a generally S-shaped section with a shallow angle. The front end portion is provided with the locking tongue piece, and the rear end side is provided with a screw hole for inserting a through screw screw of the base plate. The attachment of the child to the frame pipe is performed by passing the base plate through screw hole through the frame pipe screw hole, and the holding attachment screw screw hole in which the locking tongue piece is engaged with the base plate locking hole. The bracket is attached to a frame pipe for mounting the arm support by inserting the screw rod with a nut through or without a washer and fastening the screw rod with a nut. Since at least two mounting screws are fixed to a plurality of, for example, at least two screw holes provided on the back plate of the support, the arm support is attached to the frame pipe in various wheelchairs by the fitting. A wide arm support is provided to support the wheelchair user's arm stably. Even if a wheelchair with a different specification has a different outer diameter or a different mounting position of the arm support on the frame pipe, it can be retrofitted to any wheelchair frame pipe. Can also be attached firmly.

The back view of an example which applied an example of this invention metal fitting to the wide arm support. FIG. 2 is a cross-sectional view of the mounting bracket of FIG. Sectional drawing of the example which used one piece of washer in the mounting bracket of FIG. Sectional drawing of the example which used two washers in the mounting bracket of FIG. Sectional drawing of the state which attached arm support AS to the metal fitting of FIG.

Next, an example of the metal fitting of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of an arm support (armrest) AS viewed from the back side, and a substantially rectangular shape in which a back plate 1 formed on the back side of an armrest surface formed on the front side is formed with rounded edges 1a. It is expressed in the form.
As an example, the back plate 1 is formed by a back surface of an arm support AS formed of a synthetic resin material having a flexible surface so as to cover the plate-like core material 1b. The arm support AS is an example. The length on the left and right of the figure is 350 mm, and the width on the top and bottom of the figure is 100 mm. The arm support AS to which the present invention is applied is not limited to the above example, and the size, shape, and structure of the arm support may be other than the above example.

  On the back plate 1 of the arm support AS, a screw hole 3a for attaching the base plate 2 of the metal fitting of the present invention, which will be described later, serves as a first screw hole, and slightly deviates from the center line of the plate 1 in the length direction of the back plate 1. As an example, six pieces are provided at a pitched position with a pitch of 42 mm. Reference numeral 3b denotes six second screw holes provided on the side close to the edge of the arm support AS in parallel with the row of the first screw holes 3a. The pitch of the screw holes 3a and the screw holes 3b is the same. The second screw hole 3b is used when the mounting position of the arm support AS with respect to the frame pipe P is changed from the screw hole 3a to the screw hole 3b with respect to the pipe P (see FIG. 5).

  The base plate 2 of the metal fitting of the present invention is formed as a metal plate having a size that can be mounted on the back plate 1, for example, a flat plate member having a substantially rectangular shape with a side of about 60 mm when viewed from the plane. A screw hole 3a (3b) provided on the back plate 1 of the arm support AS, preferably a laterally long hole 2a having a length straddling the two, is provided on the upper portion of the plate 2 in FIG. A laterally small locking hole 2b for engaging a locking tongue piece 6a of a sandwiching attachment 6 to be described later is provided below the elongated hole 2a adjacent to the substantially central portion. The long hole 2a is for adjusting the mounting position of the base plate 2 in the left-right direction with respect to the screw hole 3a (3b). It is desirable to hold the arm support AS with the two mounting screws B with the two screw holes 3a (3b) facing the elongated hole 2a. For this reason, the pitch of the screw holes 3a (3b) may be made smaller than the illustrated example. In the example shown in FIG. 1, only one mounting screw B is used. This is because only one mounting screw B is sufficient in the present invention.

  In FIG. 1, P is a frame pipe to which the original arm support is attached, 5 is a screw hole for attaching the original arm support provided in the pipe P, and in FIG. The phantom lines indicate that the screw holes 5 on the frame pipe P are at a plurality of positions.

  On the other hand, referring to FIGS. 2 to 4 in addition to FIG. 1, the sandwiching attachment 6 of the metal fitting of the present invention exhibits a modified S shape with a shallow cross-sectional shape when viewed from the side, and is on one side (upper side in FIG. 1). A locking tongue piece 6a that engages with the locking hole 2b of the base plate 2 is formed. On the other hand, on the other side (the lower side in FIG. 1), a holding wall 6b is formed to hold the frame pipe P so as to be spaced apart from the surface of the base plate 2 in parallel. A screw hole 6c through which the through screw 4 is inserted is provided in the approximate center of the holding wall 6b. The screw hole 6c is for fastening the three members through the through screw bar 4 together with the nut 4a while the frame pipe P is sandwiched between the clamping attachment 6 and the base plate 2.

2 to 4, reference numeral 7 denotes a washer having a thickness of 1 mm inserted between the frame pipe P and the clamping attachment 6. Here, one sheet is in the example of FIG. 3 and two sheets are in the example of FIG. 4. However, the washer 7 is not used in the example of FIG.
That is, in the metal fitting of the present invention, the distance between the surface of the base plate 2 and the clamping wall 6b of the clamping attachment 6 is set to 20 mm as an example, so that a washer is not required when the diameter of the frame pipe P in FIG. However, if the pipe diameter is 19 mmΦ, one washer 7 (FIG. 3) is used, and if it is 17 mmΦ, three washers 7 are used (FIG. 4).

In order to attach the wide arm support AS to the frame pipe P on which the original armrest of the wheelchair was provided by retrofitting using the metal fittings of the present invention, the following procedure is performed.
That is, the metal fitting of the present invention is first attached to the frame pipe P, and then the arm support AS is attached to the metal fitting.

  The metal fitting of the present invention is attached to the frame pipe P as follows. That is, the screw rod 4 of the base plate 2 provided with the through screw rod 4 is passed through the original screw hole 5 of the frame pipe P. The locking tongue piece 6b of the holding attachment 6 is engaged with the locking hole 2b of the base plate 2 in this state, and the distal end side of the screw rod 4 is passed through the screw hole 6c of the holding wall 6b of the attachment 6. In this state, the fastening nut 4a is screwed from the top of the screw rod 4 and the nut 4a is tightened, so that the metal fitting of the present invention, that is, the base plate 2 and the clamping attachment 6, can be inserted into the through screw rod 4 And the fastening nut 4a firmly attaches to the frame pipe P to which the original armrest of the wheelchair was attached.

As described above, the metal fitting of the present invention (see FIGS. 2 to 4) attached to the frame pipe P on which the armrest of the wheelchair was provided has the arm support AS made wide on the upper surface of the base plate 2. Temporarily placed, the position of the long hole 2a of the base plate 2 and the screw hole 3a (or 3b) of the back plate 1 of the arm support AS that overlaps the long hole 2a are adjusted, and the mounting screw B (see FIG. 5)), the wide arm support AS can be attached to the frame pipe P via the metal fitting of the present invention. When the long hole 2a straddles the two screw holes 3a (or 3b), the two mounting screws B are screwed into the two screw holes 3a (or 3b) through the long hole 2a.
When the original screw hole of the frame pipe P cannot be used, a hole for passing the through screw rod 4 may be provided at a required position of the frame pipe P.

  As described above, according to the present invention, the position of the base plate 2 and the clamping attachment 6 is set in the screw hole 5 in accordance with the original screw hole 5 of the frame pipe P to which the armrest of the wheelchair was attached. 4 is fixed by fastening a nut, and then the arm support AS is mounted so that the elongated hole 2a of the base plate 2 matches the screw hole 3a (3b) of the back plate 1 of the arm support AS formed wide. After positioning, and then screwing a mounting screw B (see FIG. 5) into the screw hole 3a (3b), the arm support AS is attached to the base plate in a state where the frame pipe P is held between the base plate 2 and the holding attachment 6. 2 so that the wide arm support As for retrofitting can be attached to the frame via the bracket of the present invention. It can be attached firmly to Mupaipu P.

Even if the diameter of the frame pipe P is different, the pipe diameter difference can be absorbed by inserting the washer 7 between the frame pipe P and the clamping attachment 6, so that the wheelchair can be widened by retrofitting even if the pipe diameter is different. There is an advantage that the arm support can be installed.
Of course, the present invention bracket for arm support mounting described above can be used not only for retrofit but also as a mounting bracket for a new arm support.

AS Wide arm support 1 Back plate of arm support AS 2 Base plate 2a Long hole 2b Locking hole 3a, 3b Screw hole on back plate 4 Through screw ５ 5 Screw hole for original armrest provided on frame pipe 6 Clamping attachment 6a Locking tongue piece 6b Holding wall 6c Screw hole 7 Washer B Mounting screw

Claims (4)

  An attachment bracket for attaching an arm support of a wheelchair to a frame pipe is formed from a base plate and a clamping attachment, and the base plate is formed by a flat plate-like body and is arranged on a back plate of the arm support. A long hole that is screwed to the hole, a locking hole that engages a locking tongue formed at the tip of the clamping attachment, and a pipe hole for attaching to the arm support of the frame pipe. The clamping attachment is a member having a generally S-shaped section with a shallow angle, and includes a locking tongue piece at the front end and a through hole of the base plate on the rear end side. A screw hole is provided for inserting a screw rod, and the mounting of the bracket to the frame pipe of the wheelchair is performed by inserting the through screw rod of the base plate into the wheelchair. Through the screw hole of the frame pipe, and insert the locking tongue piece into the screw hole of the clamping attachment engaged with the locking hole of the base plate through or without a washer. By fastening the screw 杆 with a nut, the bracket is attached to the frame pipe for mounting the arm support, and the mounting screw is fixed to the screw hole provided on the back plate of the arm support through the long hole of the base plate of the bracket. By mounting the arm support, the arm support is attached to the metal fitting.   The mounting bracket according to claim 1, wherein there are two or more screw holes arranged in the back plate, and at least two screws are screwed into the screw holes through the long holes.   The mounting bracket according to claim 1 or 2, wherein at least two mounting brackets are used before and after the longitudinal direction of the arm support.   The arm support is formed wide, and at least two rows of screw holes provided in the back plate are provided in parallel along the length direction of the arm support. Hardware.

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