JPH11245608A - Caster equipped with swivelling regulation mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance an operability by always directing an operating lever in the direction at the time when it is mounted to a bottom portion of carrier instruments and various kinds of dollies in a state that it is mounted to a bottom portion thereof. SOLUTION: A wheel frame 2 journalling a wheel 7 is mounted to a lower side of a base seat 1 and an operating lever 11 is mounted to one end of the base seat 1 by projecting it from the base seat 1. An engaging portion 13 is provided such that it is drawn down to the operating lever side and projected to the frame 2 for a wheel side in correspondence to an operation of the operating lever 11 and further, an engaging groove 5 with which the engaging portion 13 is engaged and removed is formed in the wheel frame 2. The swiveling of the wheel 7 of the wheel frame 2 is regulated by engaging the engaging portion 13 with the engaging groove 5 by operation of the operating lever 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster equipped with a turning control mechanism which is used by being attached to the bottom of transport equipment or various types of transport vehicles.

[0002]

2. Description of the Related Art Conventionally, as this type of a caster with a turning regulating mechanism, for example, there is one as shown in FIG.

[0003] The caster comprises a side plate 32a of a wheel frame 32 which is attached below the pedestal 31 so as to be pivotable.
A wheel 33 is pivotally supported, and an operation lever 34 that can move up and down is projected from the wheel frame 32, and an engaging portion 35 that moves up and down according to the up and down movement of the operation lever 34 is provided. An engagement groove 37 is formed in a part of the fixed plate 36 fixed to the lower part, where the engagement portion 35 is engaged and disengaged. When the operation lever 33 is moved up and down, the engagement portion 3 is moved.
The turning of the wheel 33 is regulated by engaging the engaging groove 5 with the engaging groove 37.

[0004]

In the conventional caster with a turning control mechanism, the turning of the wheels 33 is controlled by operating the operating lever 34 with hands or feet. However, since the operation lever 34 is provided on the wheel frame 32 side, the operation lever 34 turns with the turning of the wheel 33. For this reason, the operating lever 34 enters the bottom 38 of the transporting equipment or various transport vehicles, so that it is difficult to know which direction the operating lever 34 is facing, and it is very difficult to operate the operating lever 34 when trying to operate it. There was a problem that there was a case.

In view of the above, the present invention has been made to solve the above-mentioned conventional problems, and the operation lever is always oriented in the direction when it is attached to the bottom of transporting equipment or various vehicles. The purpose of the present invention is to provide a caster with a turning restricting mechanism that can improve the operability of the wheel and that can easily restrict the turning of the wheels as the engaging portion is easily engaged with the engaging groove. is there.

[0006]

Therefore, a caster with a turning restricting mechanism according to the present invention has a wheel frame 2 which supports a wheel 7 rotatably mounted below the pedestal 1 and an operation lever provided at one end of the pedestal 1. 11 is provided so as to protrude from the pedestal 1, and an engagement portion 13 is provided so as to be lowered toward the operation lever 11 or protrude toward the wheel frame 2 in accordance with the operation of the operation lever 11. 2 is formed with an engagement groove 5 in which the engagement portion 13 is engaged and disengaged.
Are engaged with the engagement grooves 5 to restrict the turning of the wheels 7 of the wheel frame 2.

Further, in the caster with a turning restricting mechanism of the present invention, a wheel frame 2 which supports a wheel 7 is pivotally mounted below the pedestal 1 and an operation lever frame 3 is protruded from one end of the pedestal 1. Then, the locking pin 19a is inserted into the support shaft hole 9a of the operation lever frame 3, the support shaft hole 14 of the operation lever 11, and the movable support hole 12b which is a horizontally long hole of the slider 10, and the operation lever frame 3 is By inserting the locking pin 19b into the horizontally-moving supporting shaft hole 9b and the supporting shaft hole 12a of the slider 10, the slider 10 and the operating lever 11 are supported on the operating lever frame 3 by the locking pins 19a and 19b. By extending the elastic spring 20 between the locking pins 19a and 19b, the operation lever frame 3
The operation lever 11 is set in a state where the slider 10 is interposed.
At the time of turning regulation release, the locking pin 19b is locked to the first locking step 15a of the operation lever 11, and the engagement portion 13 of the slider 10 is pulled down to the operation lever frame 3 side. The engagement between the engagement groove 5 of the wheel frame 2 and the engagement portion 13 of the slider 10 is released, and the locking pin 19b is set to the second locking step of the operation lever 11 when turning is restricted. The engagement portion 13 of the slider 10 is engaged with the engagement groove 13 of the slider 10 so that the engagement portion 13 of the slider 10 projects toward the wheel frame 2. State.

In the caster with a turning restricting mechanism of the present invention, the engaging groove 5 is formed in an arc-shaped pressing portion 4 provided at an end of the upper plate 2a of the wheel frame 2,
The pressing portion 4 pivots while pressing the engaging portion 13 so that the engaging portion 13 engages with the engaging groove 5 when the engaging groove 5 and the engaging portion 13 match. And

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a caster with a turning restriction mechanism according to the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a pedestal of a caster mounted on the bottom of transporting equipment or various transport vehicles, and a wheel frame 2 is pivotably mounted below the pedestal 1. At one end of the pedestal 1, an operation lever frame 3 is protruded. The wheel frame 2 has an upper plate 2
An arc-shaped pressing portion 4 is formed at an end of the a, and an engaging groove 5 is formed in the pressing portion 4.
A support hole 6 is provided in the lower part of b. In the support hole 6, a wheel 7 is supported by a support shaft 8.

The operation lever frame 3 may be formed separately from the pedestal 1 as shown in this embodiment, or may be formed integrally with the pedestal 1. One end of the operation lever frame 3 is a screw or a bolt (not shown).
The support plate 1 is fixed to one end of the pedestal 1, and both side plates 3b, 3b bent below the upper plate 3a are formed with a support hole 9a formed as a round hole and a movable support hole 9b formed as an oblong hole. And
The operation lever 11 is attached to the operation lever frame 3 with the slider 10 interposed therebetween.

The slider 10 has shaft holes 12 formed as round holes in both side plates 10b and 10b bent below the upper plate 10a.
a and a movable shaft hole 12b which is a horizontally long hole, and an engagement groove 5 provided in the wheel frame 2 at one end.
Is provided.

The operation lever 11 has a pivot hole 14 formed as a round hole in both side plates 11b, 11b bent above the lower plate 11a.
Are formed, and a first locking step 15a and a second locking step 15b are provided at the side ends of the side plates 11b, 11b via a sliding portion 16. Further, at one end of the lower plate 11a of the operation lever 11, an operation portion 18 having a mounting hole 17 is provided so as to project therefrom.

In order to mount the operation lever 11 with the slider 10 interposed in the operation lever frame 3, the support hole 9 a of the operation lever frame 3, the support hole 14 of the operation lever 11, and the slider 10. The locking pin 19a is inserted into the movable shaft hole 12b, and the movable shaft hole 9b and the slider 10 of the operation lever frame 3 are inserted.
By inserting the locking pin 19b into the support hole 12a, the slider 10 and the operating lever 11 are supported on the operating lever frame 3 by the locking pins 19a and 19b, and between the locking pins 19a and 19b. It is assumed that the telescopic spring 20 is stretched.

When the turning regulation is released, the locking pin 19b is locked to the first locking step 15a of the operating lever 11, as shown in FIGS.
The engagement between the engagement groove 5 and the engagement portion 13 of the slider 10 is released, and at the time of turning control, as shown in FIGS. The engaging step portion 15b is engaged with the engaging groove 5 of the wheel frame 2 and the engaging portion 13 of the slider 10 is engaged.

That is, in the caster with a turning restriction mechanism of the present invention, when the operating portion 18 of the operating lever 11 is pushed downward from the turning restriction releasing state shown in FIGS. The locking pin 19b that has been locked is
6, the engagement portion 13 of the slider 10 projects toward the wheel frame 2 side.
The pressing portion 4 of the wheel frame 2 is engaged with the engaging portion 13.
When the engaging groove 13 formed in the pressing portion 4 and the engaging portion 13 match, the engaging portion 5
3, the turning of the wheel frame 2 is restricted, and the turning restricted state shown in FIGS.

Further, the caster with a turning restricting mechanism according to the present invention, when the operating portion 18 of the operating lever 11 is pulled up from the turning restricting state shown in FIGS.
The locking pin 19b, which has been locked on the sliding portion 16, slides on the sliding portion 16 and locks on the first locking step 15a, and the engaging portion 13 of the slider 10 is pulled down to the operation lever frame 3 side. Then, the engagement between the engagement groove 5 and the engagement portion 13 is released, and the pressing portion 4 of the wheel frame 2 does not contact the engagement portion 13 so that the wheel frame 2 can freely rotate. And the turning restriction is released as shown in FIGS.

When the caster with a turning control mechanism of the present invention is mounted on the bottom 21 of transport equipment or various transport vehicles, the operation section 18 of the operation lever 11 is operated as shown in FIG. As shown in FIG.
If the operation rod 22 is attached to the operation unit 18 in the upward direction by, for example, screwing the operation rod 22, the operation lever 11 can be easily operated by operating the operation rod 22.

Further, when the caster with a turning regulating mechanism of the present invention is mounted on both sides of the bottom 21 of a transporting device or various transport vehicles, as shown in FIGS. When the operating portions 18 are connected by the connecting plate 23, the operation of the operating rod 22 can be performed in conjunction with the operation of the operating rod 22.

[0020]

The caster with a turning control mechanism of the present invention is constructed as described above. Therefore, when the caster is mounted on the bottom of transport equipment or various types of transport vehicles, the operating lever always operates. Since it is oriented in the direction when attached to the bottom, operability is good. Further, when the pressing portion of the wheel frame turns while pressing the engaging portion, and the engaging groove and the engaging portion formed in the pressing portion match,
Since the engaging portion is engaged with the engaging groove, the engaging portion is easily engaged with the engaging groove, and the turning of the wheel can be reliably restricted.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a caster with a turning restriction mechanism of the present invention.

FIG. 2 is a sectional view of a main part of the caster with a turning restriction mechanism of the present invention when turning restriction is released.

FIG. 3 is a bottom view of the caster with a turning control mechanism of the present invention in a state where wheels are removed when turning control is released.

FIG. 4 is a cross-sectional view of a main part of the caster with a turning restriction mechanism of the present invention when turning is restricted.

FIG. 5 is a bottom view of the caster with a turning control mechanism of the present invention in a state where wheels are removed during turning control.

FIG. 6 is a side view showing a state in which the caster with a turning control mechanism of the present invention is attached to the bottom of transport equipment, various types of transport vehicles, and the like.

FIG. 7 is a front view showing a state in which the casters with a turning control mechanism of the present invention are attached to the bottom of transport equipment, various types of transport vehicles, and the like.

FIG. 8 is a cross-sectional view of a main part of a conventional caster with a turning restriction mechanism when turning is restricted.

[Explanation of symbols]

 Reference Signs List 1 pedestal 2 wheel frame 2a upper plate 3 operating lever 4 pressing portion 5 engaging groove 7 wheel 9a supporting shaft hole 9b moving supporting shaft hole 10 slider 11 operating lever 12a supporting shaft hole 12b moving supporting hole 13 engaging portion 14 support Shaft hole 15a First locking step 15b Second locking step 19a Lock pin 19b Lock pin 29 Telescopic spring

Claims (3)

[Claims] 1. A wheel frame (2) that supports a wheel (7) is pivotally mounted below a pedestal (1), and an operation lever (11) is attached to one end of the pedestal (1). Attach the control lever (1
In accordance with the operation of 1), an engaging portion (13) is provided which is pulled down toward the operation lever (11) or protrudes toward the wheel frame (2), and furthermore, the engaging portion is attached to the wheel frame (2). Forming an engagement groove (5) with which the joint portion (13) engages and disengages;
By operating the operation lever (11), the engagement portion (1
A caster with a turning restricting mechanism, wherein the turning of the wheels (7) of the wheel frame (2) is restricted by engaging 3) with the engaging grooves (5). 2. A frame (2) for a wheel, which supports a wheel (7), is pivotally mounted below the pedestal (1), and a frame (3) for an operation lever protrudes from one end of the pedestal (1). And the shaft hole (9) of the operation lever frame (3).
a), the locking pin (19a) is inserted into the support shaft hole (14) of the operation lever (11) and the horizontally long movement support shaft hole (12b) of the slider (10), and the operation lever frame (3) is inserted. ), The locking pin (1) is inserted into the movable shaft hole (9b) and the shaft hole (12a) of the slider (10).
9b), the slider (10) and the operating lever (11) are inserted into the operating lever frame (3).
Is pivotally supported by locking pins (19a, 19b), and a telescopic spring (20) is stretched between the locking pins (19a, 19b), so that the operating lever frame (3) can be mounted on the operating lever frame (3). The operation lever (11) is mounted with the slider (10) interposed therebetween, and the locking pin (19b) is locked to the first locking step (15a) of the operation lever (11) when turning regulation is released. Then, the engagement portion (13) of the slider (10) is pulled down toward the operation lever frame (3), and the engagement groove (5) of the wheel frame (2) is engaged with the engagement portion of the slider (10). (13) is disengaged, and the locking pin (1
9b) is the second locking step (15b) of the operating lever (11).
So that the engagement portion (13) of the slider (10) protrudes toward the wheel frame (2), and the engagement groove (5) of the wheel frame (2) and the engagement portion (13) of the slider (10). A caster with a turning control mechanism, wherein the caster is in a state of being engaged with the engaging portion (13). 3. The engaging groove (5) is formed in an arc-shaped pressing portion (4) provided at an end of an upper plate (2a) of the wheel frame (2). 4) pivots while pressing the engaging portion (13) to form the engaging groove (5).
When the engagement portion (13) matches with the engagement groove (5),
3. The caster with a turning restriction mechanism according to claim 2, wherein the engaging portion (13) is engaged with the caster.