JPS5918081Y2 - Vane type swing motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a vane-type swing motor operated by fluid pressure such as air pressure.

Conventionally, in a swing motor having a vane (movable wing) seal and a stopper (fixed wing) seal, the casing and the stopper are manufactured separately.For example, as shown in Fig. 5, the stopper seal S is The mounted stopper T was positioned and mounted on the casing by the pin P.

However, due to the shape of the stopper T, as shown in FIG.
The processing is complicated and expensive, and since the pin P is used to position the casing and the stopper, it is necessary to precisely machine a hole (not shown) on the casing side into which the pin P is inserted, which is troublesome and expensive. .

Additionally, due to errors in the combination of the casing and stopper and errors in the shape of the sealing groove formed in the stopper, the sealing performance of the stopper seal is unstable and the sliding resistance of the vane is also unstable. Ta.

In other conventional examples, a stopper is mounted from the outer surface of the casing with a screw or the like, but these have the same drawbacks as described above.

The present invention solves the above-mentioned drawbacks by forming the stopper integrally with the casing to reduce the number of parts, making processing and assembly easier, and by configuring the stopper seal member to be positioned directly to the casing. The purpose of this is to improve the positioning accuracy and stabilize the sealing performance and sliding resistance of the stopper seal.

The configuration of the present invention will be explained below using examples.

In the drawings showing this embodiment, as shown in FIG.
A vane (movable wing) having a split casing 1, 2 and a shaft portion 3 extending through the center of the casing 1, 2.
4, and a mold on the sliding part between the vane 4 and the casing,
A vane seal 5 integrally attached by baking etc.
Stopper portion 6.7 integrally formed on the casing 1°2.
8.9 and the groove 1 formed in the central longitudinal direction of the stopper part.
0 and 11, there is a stopper seal 12 which is directly positioned and attached to the casings 1 and 2.

Further, the stopper seal 12 is integrally attached to the outer surface of the bottle 13 by molding, baking, etc. in the same manner as the vane seal, and both ends of the pin 13 are inserted into the holes 14.15 of the casing 1.2, respectively. .

Further, the seal members 16 and 17 at the shoulders of the vane are integrally formed with the vane seal 5 by molding, baking, or the like.

Furthermore, as shown in FIG. 2, fluid pressure supply and discharge ports 18 and 19 are formed from the outer circumferential side of the casing 1 into the vane sliding chamber.

As shown in FIGS. 3 and 4, a stopper portion 6 is provided in the vane sliding chamber of the casing. 7. 8. 9 is formed integrally with the casing, and grooves 10° and 11 are formed in the axial direction in the center thereof.

These can usually be easily molded by precision casting, precision forging, etc.

As shown in FIG. 2, the stopper seal 12 is configured to be directly positioned and attached to the casings 1 and 2 within the groove 10.11.

Furthermore, as shown in Figures 6 and 7, the casing is
A similar implementation can be achieved by forming the stopper portions 21 and 22 integrally with the intermediate casing 20 as described above.

In this case, it is not necessary to form stopper portions in the casings 1 and 2 on both sides.

As described above, in the present invention, a stopper part with a concave cross section is formed integrally with the casing, and in the groove formed in the center of the stopper part, the outer peripheral surface of a pin whose both ends are fixed to the side wall of the casing is molded or baked. Since the integral stopper seal is mounted with a screw or the like and the stopper seal is positioned directly to the casing, it is possible to provide an inexpensive and high-quality rocking motor.

[Brief explanation of the drawing]

Figure 1 is a front sectional view of the embodiment of the present invention, and Figure 2 is Figure 1A.
-A cross-sectional view, Figure 3 is a cross-sectional perspective view of casing 1, Figure 4 is a cross-sectional view of casing 1;
5 is an explanatory view showing a conventional example, FIG. 6 is a front sectional view showing another embodiment, and FIG. 7 is a perspective view showing the casing in the assembled state of FIG. 6. It shows.

Claims (1)

[Claims for Utility Model Registration] 1. In a vane-type swing motor in which a vane installed in a cylindrical casing swings between stopper parts, the casing is attached to the inner peripheral surface of the casing along the axial direction. A stopper part with a concave cross section integrally formed with the casing is provided in a protruding manner, and in the groove formed in the center of the stopper part, the outer peripheral surface of a pin whose both ends are fixed to the side wall of the casing is integrally formed by molding, baking, etc. A vane-type swing motor characterized by being equipped with a stopper seal. 2. Claims characterized in that the casing is formed by joining and connecting two or three side structures, and the stopper portion is provided protruding from the center of the casing at least in the longitudinal direction. The vane type swing motor according to item 1.