JPS61241515A - Spherical joint - Google Patents

Abstract

PURPOSE:To form a spherical joint in a compact manner by forming the forward end portion of a ball shaft on a fluid cylinder utilizing a hemispherical both as lock means, and pressing and fixing ball clamping means from the inside. CONSTITUTION:A ball shaft B has a hemispherical body 1 connected to shaft pipe 3 for supplying fluid pressure through a connecting pipe 2 having a flange portion 2t projected in the interior. The cutting surface of the hemisphere 1 forms a cylinder by a round hole 1a caved like a hemisphere as lock means, in which an O-rind 5 is provided as a piston on the side peripheral surface of the round hole 1a, and a conicallyformed push boss 4 is fitted to the outer peripheral surface thereof. As ball clamping means K, a sphere pressing plate 6 is connected to a panel 7 brought into contact with the forward end of the push boss 4 trough a collar 8 of a needed size by a pair of small coned disc screws 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a ball-and-ball joint having a built-in locking means for a ball clamping device.

[Conventional technology]

Conventionally, ball-and-socket joints usually do not lock, but if a particular need arises, as shown in Figure 3, after loosening the tightening screw n on the ball clamp, the ball joint can be locked. The combination angle of the ball shaft and the ball shaft was adjusted to the desired angle, and the tightening screw n was tightened to fix the ball shaft.

There are still flexible dummy brace machines for clothing in which multiple piles or boards are moved by an operating shaft via self-aligning bearings, each pile or board is moved at a position that matches the inner shape of the garment. The finished garments were finished by applying external pressure using various pressure trowels.

[Problem that the invention seeks to solve]

However, if you try to lock a ball-and-socket joint using an external force like in the past, you have to reach the tightening screw, and you also have to use an air cylinder or electric cylinder as the driving source for tightening. If you try to use something like this, not only will the space occupied by the locking device increase;
Since it must be placed next to the ball joint, it has the disadvantage that it is difficult to install it in a narrow space or to arrange multiple pieces in close proximity.

Furthermore, in the case of flexible dummy press machines for clothing, there is a problem in that when applying external pressure, if there is movement of the panel, the clothing cannot be finished.

[Failure to solve the problem]

This invention was made in view of the situation of tilting, and it solves these problems by providing a ball-and-socket joint with a structure in which the posture of the ball clamp is locked by a fluid cylinder installed on the ball shaft. It aims to solve the problem.

〔Example〕

Hereinafter, a first embodiment of the present invention will be described based on FIG.

First, I will explain the configuration.

In the ball shaft B, a hemispherical ball 1 is connected to a shaft pipe 3 that supplies fluid pressure such as air, water, or oil through a connecting pipe 2 having a flange 2t protruding from the center thereof. The cut surface of is formed into a cylinder by a round hole 1a carved in the inner cavity as a locking means, and an O-ring 5 is equipped on the side circumferential surface of the round hole 1a as a piston, and the outer surface is formed into a conical shape. A push boss 4 formed in the shape is inserted into the push boss 4.

In addition, as a ball clamp holder, a ball holding plate 6 that supports the ball 1 in a rotatable and tiltable manner is connected to a pair of flat head machine screws 9 via a panel 7 that abuts the tip of the push boss 4 and a collar 8 of the required size. It is constructed by connecting two sheets together.

As a stabilizing means for the ball clamping tool, the shaft tube 3 is clamped between the end surface of the shaft tube 3 and the collar portion 2t of the connecting tube 2,
The spring holder screwed onto the plate spring 11 supported by the tool 10 is
The ball holding plate 6 is biased to maintain a neutral posture of the ball gripping tool.

Incidentally, when the shaft tube 3 is used in a flexible dummy press machine for clothing, it may be used also as an operating shaft.

Next, the effect will be explained.

When an external force is applied to the ball clamping tool K, for example, an external force P is applied to a portion of the panel 7 other than the contact point p with the push boss 4, the panel 7 tilts with the contact point p as a fulcrum according to the external force P. Although it assumes a rotated posture, when the external force P becomes zero, the elastic force of the leaf spring 11 returns it to its original neutral posture. However, if fluid pressure R such as air pressure or oil pressure is supplied from the shaft tube 3 while the external force P is being applied, the push boss 4 whose inner end surface is pressed by the fluid pressure R presses its tip against the panel 7. At the same time, the ball 1 is also pressed against the spherical concave surface 6h of the ball holding plate 6, and the panel 7,
That is, since the ball gripper is locked, it maintains the changed posture even if the external force P becomes zero.

It goes without saying that when the fluid pressure R is cut off, the ball clamp holder returns to its original neutral position due to the leaf spring 11.

Next, a second embodiment will be explained based on FIG. 2.

This embodiment is mainly a modification of the locking mechanism of the first embodiment.

The ball 21 that is screwed onto the connecting pipe 2 is formed by protruding a thick cylindrical portion 21e on the cut surface of a hemisphere, and an O-ring 5 is provided on the outer peripheral surface of the cylindrical portion 21e to form an immovable piston. That is. Further, the push boss 24 has the cylindrical portion 2 on the cutting surface.
1e is a hemispherical movable cylinder with an internal round hole 24a that is slidably fitted into the outside, and both are 21.24
It is constructed so that it becomes one sphere when combined.

However, the push boss 24 of the pile 27 is brought into surface contact with the spherical concave surface 27h carved into the panel 27, thereby increasing the frictional force during locking and increasing the friction between the ball clamp and the ball shaft. This is intended to improve stability during assembly.

Note that since the operation is almost the same as that of the first embodiment, the explanation thereof will be omitted.

〔Effect of the invention〕

As explained above, in this invention, the distal end of the ball shaft is formed into a fluid cylinder using a hemispherical body as a locking means, and the ball clamp is fixed by pressure from inside, so that the locking means is Since it is built-in, the ball-and-socket joint can be made into a compact shape, and not only can it be installed in a narrow space or multiple units can be placed in close proximity, but it can also be operated remotely.

Therefore, it can be easily applied to a flexible dummy press machine for clothing, which speeds up the formation of a flexible dummy using the panel and maintains its shape, so the movement of the panel is prevented when external pressure is applied to the pile. This has the advantage that you can easily finish your clothes.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a first embodiment of the present invention, where the drawing is a longitudinal sectional front view, Figure 2 is a plan view, Fig. 2 is a partially sectional front view of the main part of the second embodiment, and Fig. 3 1 is a diagram showing an example of a conventional ball-and-socket joint, where the figure is a front view and the figure ■ is a right side view. K...Ball clamp B...Ball shaft R...Fluid pressure 1.21...Ball 1 a, 24a...Round hole 3...Shaft tube 4.24...Press boss 6...Ball holding plate 6h. ......Spherical concave surface 7.27...Panel 21e...Cylindrical portion applicant f-nested #peng-k. Always around

Claims (4)

[Claims] (1) A hemispherical sphere fixed to an axial tube, and equipped with the sphere,
A ball shaft in which a locking means in the form of a cylinder operated by fluid pressure is built into the ball clamp is combined with the ball clamp, and the posture of the ball clamp with respect to the ball shaft is locked by the fluid pressure. Features a ball-and-socket joint. (2) The ball clamping tool is a ball-and-socket joint according to claim 1, which is formed by integrally connecting a ball holding plate with a spherical concave surface carved for supporting a ball and a panel via required dimensions. . (3) The locking means has a cylinder with a round hole cut into the cut surface of the hemisphere, and a piston with a push boss that is slidably inserted into the round hole. A ball-and-socket joint according to scope 1 or 2. (4) The locking means is a hemisphere with a cylindrical part protruding from the cut surface of the hemisphere to form an immovable piston, and a round hole cut into the cut surface that is slidably fitted into the cylindrical part. 3. A ball-and-socket joint according to claim 1 or 2, characterized in that the push boss is constructed as a movable cylinder.