JP6782966B2 - Mounting bracket for casters - Google Patents

Description

The present invention relates to a caster mounting bracket for mounting casters on the bottom surface of a mounted body.

Conventionally, for example, Patent Document 1 discloses a caster mounting bracket for mounting casters on the bottom surface of a mounted body. The mounting bracket includes a rectangular plate-shaped main body fixed to the bottom surface of the body to be mounted, and four holding portions formed so as to project downward on the lower surface of the main body, and the four holding portions. However, the casters can be attached to the attached body by jointly tightening the attachment portion and the holding portion while holding the four corners of the rectangular plate-shaped attachment portion of the caster.

By the way, there are two types of casters, a structure that cannot rotate around the axis extending in the vertical direction and a structure that can rotate around the axis extending in the vertical direction. In general, four mounting holes are formed at positions forming the vertices of a rectangle when viewed from below in the mounting portion of a caster having a structure that cannot rotate around an axial center extending in the vertical direction, while in the vertical direction. Four mounting holes are formed at positions forming the apex of a square when viewed from below in the mounting portion of the caster having a structure that can rotate around the extending axis. Therefore, in Patent Document 1, a mounting bracket in which each holding portion forms a rectangular apex when viewed from below, and a mounting bracket in which each holding portion forms a square apex when viewed from below. Two types are available.

Jikkenhei 5-19905

However, if two mounting brackets corresponding to each of the two types of casters are prepared as in Patent Document 1, they are mounted on the mounted body when it becomes necessary to change the type of casters to be mounted on the mounted body. It is also necessary to replace the mounting bracket, which increases the cost of parts and complicates the replacement work.

Further, when the caster having a structure that cannot rotate around the axis extending in the vertical direction is attached to the attached body by the mounting bracket so as to have a preset rolling direction, the moving direction of the attached body may be various circumstances. When it becomes necessary to change the direction perpendicular to the above-mentioned rolling direction, it is also necessary to change the mounting posture of the mounting bracket attached to the attached body, which also complicates the replacement work. It ends up.

The present invention has been made in view of these points, and an object of the present invention is to replace two types of casters and to rotate the casters configured to be non-rotatable around an axial center extending in the vertical direction. The purpose is to provide mounting brackets for casters that can be easily modified and are inexpensive.

In order to achieve the above object, the present invention is characterized in that the portion through which the fastening bolt for attaching the caster is inserted is devised.

Specifically, the first mounting hole, which is configured to be non-rotatable around the axis extending in the vertical direction and extends in the vertical direction through which the fastening bolt can be inserted, is formed at a position forming a rectangular apex in a plan view. One caster or a second mounting hole that is rotatably configured around the axis extending in the vertical direction and extends in the vertical direction through which the fastening bolt can be inserted is formed at a position forming a square apex in a plan view. The following solutions were taken for the caster mounting brackets that mount the second caster to the bottom surface of the object to be mounted.

That is, in the first invention, the main body portion has a flat plate shape extending in the horizontal direction and the reference point is determined at a predetermined position, and the first caster rolls in the first horizontal direction in the main body portion. Four first bolt insertion portions formed at positions corresponding to the first mounting holes so as to be movable and at equal intervals from the reference point, and the first main body portion. Formed at a position corresponding to each of the first mounting holes so that the casters can roll in the second horizontal direction orthogonal to the first horizontal direction, and at positions equidistant from the reference point. Four third bolt insertion portions formed at positions corresponding to the second mounting holes of the second caster and at equal intervals from the reference point in the main body portion. The main body is provided with a bolt insertion portion, and four elongated holes located at the apex of a square centered on the reference point are formed in the main body portion, and the central portion of each elongated hole is larger than both end portions. It has an obtuse V-shape located on the reference point side, and each of the third bolt insertion portions is characterized by being formed by a central portion of each of the elongated holes .

In the second invention, in the first invention, the body portion has a rectangular shape having long sides and short sides, the first bolt insertion portion, the two said slots located on one diagonal is composed of the short side near the one end portion, the other end portion close to the short sides of two of said slots located on the other diagonal, the second bolt insertion portion is located at one of the diagonal above to two of the other end portion close to the long sides of the slots, is constituted by an end portion close to the long sides of two of said long hole located diagonally above the other, the inner surfaces of the respective long holes The opposite portion between the first bolt insertion portion and the third bolt insertion portion, or the opposite portion between the second bolt insertion portion and the third bolt insertion portion is close to each other. It is characterized in that a pair of bulging portions are provided .

In the first invention, when the first caster is attached to the attached body by co-tightening each first mounting hole and each first bolt insertion portion, the attached body becomes the first horizontal due to the rolling operation of the first caster. It becomes possible to move in the direction. On the other hand, when the first caster is attached to the attached body by co-tightening each first mounting hole and each second bolt insertion portion, the attached body can move in the second horizontal direction by the rolling operation of the first caster. become. In this way, the rolling direction of the first caster configured to be non-rotatable around the axis extending in the vertical direction can be changed without changing the posture of the mounting bracket, so that the load on the operator can be reduced. Can be done. Further, since the second caster can be attached to the attached body by co-tightening each of the second mounting holes and each third bolt insertion portion, different types can be obtained without changing the mounting bracket fixed to the attached body. Since it can be replaced with casters, the load during the replacement work of the operator can be reduced and the cost of parts can be kept low. Further, since the mounting bracket can be formed only by performing elongated hole processing at four points of the main body portion, the processing cost can be suppressed low. Further, when the fastening bolt is inserted into each of the second mounting holes of the second caster and each of the third bolt insertion portions of the mounting bracket, a long hole is formed when the mounting portion of the second caster is about to shift with respect to the mounting bracket. Each fastening bolt comes into contact with the inner surface around the third bolt insertion portion. Therefore, it is possible to prevent the mounting posture of the mounting portion of the second caster from being displaced with respect to the mounting bracket, and the mounting portion of the second caster can be mounted at the correct position with respect to the mounting bracket.

In the second invention, when the fastening bolt is inserted into each of the first mounting holes of the first caster and each of the first bolt insertion portions of the mounting bracket, the mounting portion of the first caster tries to shift with respect to the mounting bracket. At that time, each fastening bolt comes into contact with the bulging portion. Similarly, when the fastening bolts are inserted into the first mounting holes of the first caster and the second bolt insertion portions of the mounting bracket, the mounting portion of the first caster expands when the mounting portion of the first caster is about to shift with respect to the mounting bracket. Each fastening bolt comes into contact with the protruding part. In this way, it is possible to prevent the mounting posture of the mounting portion of the first caster with respect to the mounting bracket from being displaced by each of the bulging portions provided on the inner side surface of the elongated hole, and the first caster with respect to the mounting bracket. Can be mounted in the correct position.

It is a top view of the mounting bracket for casters which concerns on embodiment of this invention. It is a side view which shows the state which the caster which cannot rotate about the axis extending in the vertical direction is attached to the attached body by using the attachment bracket which concerns on embodiment of this invention. It is a figure which looked at the mounting bracket at the time of the state which the caster which cannot rotate about the axis extending in the vertical direction is attached to the attached body so that the attached body can move in the first horizontal direction. It is the figure which looked at the mounting bracket when the caster which cannot rotate about the axis extending in the vertical direction is attached to the attached body so that the attached body can move in the second horizontal direction. It is a side view which shows the state which the caster which can rotate about the axis extending in the vertical direction is attached to the attached body by using the attachment bracket which concerns on embodiment of this invention. It is the figure which looked at the mounting bracket when the caster which can rotate about the axis extending in the vertical direction is attached to the attached body from the bottom.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.

FIG. 1 shows an iron mounting bracket 1 for casters according to an embodiment of the present invention. As shown in FIGS. 2 to 6, the mounting bracket 1 has a first caster 2 on the bottom surface of a pallet 10 (attached body) for accommodating luggage or the like, or a different type of mounting bracket 1 from the first caster 2. 2 It is for attaching the caster 3.

As shown in FIG. 2, the first caster 2 has a rectangular shape in a plan view, which is a portion for attaching the first caster body 2a that pivotally supports the first wheel 2b and the first caster body 2a to the pallet 10. The first caster main body 2a is provided with a mounting plate 2c, and is configured to be non-rotatable around an axis extending in the vertical direction with respect to the mounting plate 2c.

As shown in FIGS. 3 and 4, four first mounting holes 2d extending in the vertical direction through which the fastening bolts 11 can be inserted are formed in the mounting plate 2c at positions forming the apex of a rectangle in a plan view. ..

On the other hand, as shown in FIG. 5, the second caster 3 has a second caster body 3a that pivotally supports the second wheel 3b and a rectangular portion in a plan view that is a portion for attaching the second caster body 3a to the pallet 10. The second caster main body 3a is provided with a mounting plate 3c having a shape, and is configured to be rotatable around an axial center C1 extending in the vertical direction with respect to the mounting plate 3c.

As shown in FIG. 6, the mounting plate 3c is formed with four second mounting holes 3d extending in the vertical direction through which the fastening bolts 11 can be inserted at positions forming a square apex in a plan view.

As shown in FIG. 1, the mounting bracket 1 has a flat plate shape extending in the horizontal direction, and includes a main body portion 4 having a reference point B1 determined at the center.

The main body 4 is formed with four elongated holes 5 located at the vertices of a square centered on the reference point B1 in a plan view.

Each of the elongated holes 5 has an obtuse V-shape whose central portion is located closer to the reference point B1 than both side portions, and one end portion and the other of the two elongated holes 5 located diagonally on one side. The other end portions of the two elongated holes 5 located diagonally form the first bolt insertion portion 6 of the present invention, and the other end portions of the two elongated holes 5 located diagonally on one side and the diagonal end portion of the other. One end portions of the two elongated holes 5 located in the above form the second bolt insertion portion 7 of the present invention, and the central portion of each of the elongated holes 5 constitutes the third bolt insertion portion 8 of the present invention.

As shown in FIG. 3, each of the first bolt insertion portions 6 is positioned corresponding to each of the first mounting holes 2d so that the first caster 2 is in a posture capable of rolling in the first horizontal direction X1. Moreover, the positions are evenly spaced from the reference point B1.

Further, as shown in FIG. 4, each of the second bolt insertion portions 7 is in a posture in which the first caster 2 can roll in the second horizontal direction X2 orthogonal to the first horizontal direction X1. It is located at a position corresponding to each of the first mounting holes 2d and at equal intervals from the reference point B1.

Further, as shown in FIG. 6, each of the third bolt insertion portions 8 is located at a position corresponding to each of the second mounting holes 3d of the second caster 3 and at a position equidistant from the reference point B1. It has become.

Then, a pair of first bulging portions that bulge so as to approach each other in the facing portions between the first bolt insertion portion 6 and the third bolt insertion portion 8 on the inner surface of each elongated hole 5. A pair of second parts that are provided with 9a and bulge so as to approach each other at the opposing portions between the second bolt insertion portion 7 and the third bolt insertion portion 8 on the inner surface of each elongated hole 5. A bulging portion 9b is provided.

Next, attachment of the first caster 2 to the pallet 10 will be described.

First, as shown in FIGS. 2 to 4, the mounting bracket 1 is mounted on the bottom surface of the pallet 10 so that its longitudinal direction is along the first horizontal direction X1.

When making the pallet 10 movable in the first horizontal direction X1, as shown in FIG. 3, the operator puts each of the first bolt insertion portions 6 of the mounting bracket 1 into each of the first casters 2. The mounting plate 2c of the first caster 2 is overlapped with the main body 4 of the mounting bracket 1 from below so that the first mounting holes 2d match.

Next, the operator inserts the fastening bolts 11 into the corresponding first mounting holes 2d and the first bolt insertion portions 6, and also uses the nuts 12 to fasten the mounting plates 2c together with the mounting bracket 1. Then, the first caster 2 is attached to the pallet 10, and the pallet 10 can be moved in the first horizontal direction X1 by the rolling operation of the first caster 2.

Next, when changing the moving direction of the pallet 10 to the second horizontal direction X2 orthogonal to the first horizontal direction X1, the operator removes the fastening bolts 11 and nuts 12 that are screwed together and removes the first casters. 2 is once removed from the mounting bracket 1, and as shown in FIG. 4, the first caster is aligned with the first mounting holes 2d of the first caster 2 so that the second bolt insertion portions 7 of the mounting bracket 1 are aligned with each other. The mounting plate 2c of 2 is superposed on the main body 4 of the mounting bracket 1 from below.

Next, the operator inserts the fastening bolts 11 into the corresponding first mounting holes 2d and the second bolt insertion portions 7, and also uses the nuts 12 to fasten the mounting plate 2c and the mounting bracket 1 together. Then, the first caster 2 is attached to the pallet 10, and the pallet 10 can be moved in the second horizontal direction X2 by the rolling operation of the first caster 2. In this way, the rolling direction of the first caster 2 configured to be non-rotatable around the axis extending in the vertical direction can be changed without changing the posture of the mounting bracket 1, so that the load on the operator can be increased. Can be reduced.

Next, attachment of the second caster 3 to the pallet 10 will be described.

When replacing the casters to be attached to the mounting bracket 1 from the first casters 2 to the second casters 3, the operator first removes the fastening bolts 11 and nuts 12 that are screwed together and attaches the first casters 2 from the mounting bracket 1. Along with the removal, as shown in FIG. 6, the mounting plate 3c of the second caster 3 is mounted so that the second mounting holes 3d of the second caster 3 are aligned with the third bolt insertion portions 8 of the mounting bracket 1. Overlay on the main body 4 of the bracket 1 from below.

Next, the operator inserts the fastening bolt 11 into the second mounting hole 3d and the third bolt insertion portion 8 corresponding to each other, and fastens the mounting plate 3c and the mounting bracket 1 together using the nut 12. Then, since the second caster 3 is attached to the pallet 10, the attachment bracket 1 fixed to the pallet 10 can be replaced with a different type of caster without changing, and the load during the replacement work of the operator can be reduced. And the cost of parts can be kept low.

From the above, according to the embodiment of the present invention, the first and second casters 2 and 3 of different types are replaced, and the rolling direction of the first caster 2 configured to be non-rotatable around the axis extending in the vertical direction is changed. Can be easily done at no cost.

Further, since the mounting bracket 1 can be formed only by performing elongated hole processing at four positions of the main body portion 4, the processing cost can be suppressed low.

Further, when the second caster 3 is attached to the mounting bracket 1, the elongated hole 5 has a substantially V shape in a plan view, so that each second mounting hole 3d of the second caster 3 and each third of the mounting bracket 1 are formed. When the fastening bolt 11 is inserted into the bolt insertion portion 8, even if the mounting plate 3c of the second caster 3 tries to shift with respect to the mounting bracket 1, each of the inner side surfaces around the third bolt insertion portion 8 in the elongated hole 5 is formed. The fastening bolts 11 come into contact with each other. Therefore, it is possible to prevent the mounting posture of the mounting plate 3c of the second caster 3 from being displaced with respect to the mounting bracket 1, and the mounting plate 3c of the second caster 3 can be mounted at the correct position with respect to the mounting bracket 1. it can.

In addition, when the first caster 2 is attached to the mounting bracket 1, a pair of first bulging portions 9a are provided at opposite portions between the first bolt insertion portion 6 and the third bolt insertion portion 8. Therefore, when the fastening bolt 11 is inserted into each of the first mounting holes 2d of the first caster 2 and each of the first bolt insertion portions 6 of the mounting bracket 1, the mounting plate 2c of the first caster 2 is inserted into the mounting bracket 1. Even if they try to shift, each fastening bolt 11 comes into contact with the first bulging portion 9a. Similarly, since the pair of second bulging portions 9b are provided at the opposing portions between the second bolt insertion portion 7 and the third bolt insertion portion 8, each first mounting hole 2d of the first caster 2 is provided. When the fastening bolt 11 is inserted into each of the second bolt insertion portions 7 of the mounting bracket 1, even if the mounting plate 2c of the first caster 2 tries to shift with respect to the mounting bracket 1, each of the second bulging portions 9b The fastening bolts 11 come into contact with each other. In this way, the mounting posture of the mounting plate 2c of the first caster 2 with respect to the mounting bracket 1 is displaced by the first bulging portions 9a and the second bulging portions 9b provided on the inner surface of the elongated hole 5. This can be prevented, and the mounting plate 2c of the first caster 2 can be mounted at the correct position with respect to the mounting bracket 1.

The present invention is suitable for a caster mounting bracket for mounting casters on the bottom surface of a body to be mounted.

1 Mounting bracket 2 1st caster 2c Mounting plate 2d 1st mounting hole 3 2nd caster 3c Mounting plate 3d 2nd mounting hole 4 Main body 5 Long hole 6 1st bolt insertion part 7 2nd bolt insertion part 8 3rd bolt insertion Part 9a 1st bulging part 9b 2nd bulging part 10 Pallet (attached body)
11 Fastening bolt B1 Reference point C1 Axial center

Claims (2)

The first caster is configured so that it cannot rotate around the axis extending in the vertical direction, and four first mounting holes extending in the vertical direction through which the fastening bolt can be inserted form the apex of the rectangle in a plan view. The second caster is configured to be rotatable around the axis extending in the vertical direction, and four second mounting holes extending in the vertical direction through which the fastening bolt can be inserted form the apex of a square in a plan view. A mounting bracket for casters that is mounted on the bottom of the mounted body.
It has a flat plate shape that extends in the horizontal direction, and the main body has a reference point at a predetermined position.
The first caster is formed in the main body at a position corresponding to each of the first mounting holes so as to be in a posture capable of rolling in the first horizontal direction, and at a position at equal intervals from the reference point. 4 first bolt insertion parts and
At the position corresponding to each of the first mounting holes and at the reference point so that the first caster can roll in the second horizontal direction orthogonal to the first horizontal direction in the main body. Four second bolt insertion parts formed at equal intervals from the
The main body is provided with four third bolt insertion portions formed at positions corresponding to the second mounting holes of the second caster and at equal intervals from the reference point .
In the main body, four elongated holes located at the vertices of a square centered on the reference point are formed in a plan view.
Each elongated hole has an obtuse V-shape whose central portion is located closer to the reference point than both end portions.
Each of the third bolt insertion portions is a mounting bracket for casters, which is composed of a central portion of each of the elongated holes . In the caster mounting bracket according to claim 1,
The main body has a rectangular shape having a long side and a short side.
The first bolt insertion portion, the other end closer to the short side of the one pair and one end portion close to the short sides of two of said long hole located at the corner, two of the long hole located on the other diagonal Consists of parts,
The second bolt insertion portion, the other end portion close to the long sides of two of said long hole located on one diagonal above, the long sides of two of said long hole located diagonally above the other Consists of a close end ,
On the inner surface of each elongated hole, the facing portion between the first bolt insertion portion and the third bolt insertion portion, or the facing portion between the second bolt insertion portion and the third bolt insertion portion. Is a mounting bracket for casters, which is provided with a pair of bulging portions that bulge so as to approach each other .

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