JPH0418754Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a hollow member attachment/detachment device.

(Prior Art) A conventional example of this type of attachment/detachment device is shown in FIG. That is, FIG. 5 is a side view of a conventional attachment/detachment device, which includes two side plates 101a, 101b and a shaft member 10 pivotally supported by these side plates 101a, 101b.
2a, 102b, and one shaft member 102a as the fifth
In the figure, the hollow member 111 is composed of a pressure spring 105 that elastically biases the leftward direction, and the hollow member 111 is
It was held between a and 102b.

(Problems to be Solved by the Invention) However, the above-mentioned conventional attachment/detachment device requires two side plates 101a and 10b, which increases the size of attachment, requires a large space, and is expensive. , there is a problem of poor assembly.
Moreover, when installing the hollow member 111, since its axial length A is longer than the fitting length B (A>B), the workability of installing the hollow member 111 is poor, so it is necessary to tilt the hollow member 111 and press it once. There was a problem that I could not put it on unless I had done so.

The present invention has been made in view of the above problems, and its purpose is to provide a hollow member attachment/detachment device that is small, compact, and low in cost, and that can facilitate the attachment and detachment of hollow members. .

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a shaft whose end portion is pivotably attached to the shaft, a bearing slidably inserted into the shaft, and a shaft which is integrated into the shaft. a pressurizing means for biasing in the direction;
An attachment/detachment device was constituted by a positioning shaft for holding the hollow member between the bearing and the bearing.

(Function) Since the hollow member can be attached and detached by swinging the shaft, the work is significantly facilitated.
Further, the center position of the shaft can be determined by the outer diameter of the bearing and the fitting inner diameter of the hollow member, and the device can be made smaller and more compact.

(Example) An example of the present invention will be described below based on the accompanying drawings.

Fig. 1 is a plan view of the attachment/detachment device according to the present invention, Fig. 2
The figure is a side view showing the operation of the device. In the figure, 1 is a side plate, which has a solid round rod-shaped shaft 2.
One end is pivotally connected by a pin 3 in a direction perpendicular to the plane of the paper in FIG. A cylindrical bearing 4 is slidably inserted into this shaft 2, and the bearing 4 is moved toward the left side in FIG. is constantly energized.
A stopper 6 is attached to the end of the shaft 2 to prevent the bearing 4 from coming off.

On the other hand, a positioning shaft 7 is rotatably supported on the center line of the shaft 2, and a pin 8 is inserted into the end of the positioning shaft 7 in the radial direction. Note that the cover material 9 for preventing the shaft 2 from coming off is attached to the side plate 1 with screws 10.
It is tied in.

Thus, the hollow member 11 is fitted onto the outer periphery of the bearing 4 and held between the collar 4a at the end of the bearing 4 and the pin 8 of the positioning shaft 7.The installation of the hollow member 11 is as follows. This is how it is done. That is, as shown by the solid line in FIG. 2, the shaft 2 is rotated together with the bearing 4 about the pin 3 in the direction of arrow C, and moved to the illustrated position D. Note that before the hollow member 11 is attached, the bearing 4 is positioned at the left limit in FIG. 2 due to the elastic force of the pressure spring 5.

Next, the hollow member 11 is moved in the direction of arrow E in FIG.
Even after contacting the flange 4a, it is pushed in the same direction against the elastic force of the pressure spring 5, and this state is maintained to move the hollow member 11, bearing 4 and shaft 2 as a whole around the pin 3. If the hollow member 11 is rotated in the direction F, which is opposite to C, and returned to the original position shown by the chain line in FIG. It moves along the bearing 4 in the direction of arrow G in the figure under the elastic force of the pressure spring 5, and the grooves 11a formed at the ends thereof engage the pin 8 of the rotating shaft 7, and the corresponding The installation of the hollow member 11 is completed.

Incidentally, the hollow member 11 can be removed in the same manner by reversing the procedure described above.

In the above, since the center position of the shaft 2 is determined by the outer diameter of the bearing 4 and the fitted inner diameter of the hollow member 11, the device can be made smaller and more compact, and at the same time, the work of attaching and detaching the hollow member 11 is facilitated. I can do it.

Modified embodiments of the present invention are shown in FIGS. 3 and 4, respectively. In the example shown in FIG. 3, the positioning shaft 7 is constructed as a bearing, and the device is simply an idler member attachment/detachment device. Also, in the example shown in Figure 4,
A spherical part 2a is provided at the end of the shaft 2, and the spherical part 2a is received by a conical receiving part 1a provided on the side plate 1 side, and these constitute a kind of ball joint.
The shaft 2 and the bearing 4 are tiltable in all directions, which provides an advantage in that the work of mounting the hollow member 11 is further facilitated.

(Effects of the invention) As is clear from the above description, according to the invention, the attachment/detachment device is attached to a shaft having an end pivotably attached thereto, a bearing slidably inserted into the shaft, and a bearing. Since it is equipped with a pressurizing means for biasing in one direction and a positioning shaft for holding the hollow member between the bearing, the attachment/detachment device can be made smaller and more compact, and the attachment/detachment work can be made easier. .

[Brief explanation of the drawing]

Figure 1 is a side view of the attachment/detachment device according to the present invention;
The figure is a plan view showing the operation of the device, Figures 3 and 4.
The figure is a side view of a detachable device according to a modified embodiment of the present invention, and FIG. 5 is a side view of a conventional detachable device. Explanation of symbols, 1...Side plate, 2...Shaft, 3, 8...
...Pin, 4... Bearing, 5... Pressure spring, 7... Positioning shaft, 11... Hollow member.

Claims (1)

[Scope of utility model registration request] A hollow member is held between a shaft having an end pivotally attached to the shaft, a bearing slidably inserted into the shaft, a pressurizing means for biasing the bearing in one direction, and the bearing. A device for attaching and detaching a hollow member, comprising a positioning shaft for attaching and detaching a hollow member.