JPH0243761Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a pneumatic circuit device with excellent sealing properties that integrally forms a plurality of pneumatic passages extending from a pneumatic device.

(Prior Art) Conventionally, the plurality of pneumatic passages in a pneumatically actuated device have been formed with hoses made of rubber or the like. In the case of passages, the circuit is complicated, and the connection work during assembly is difficult.
There was a problem in that an operator could easily make a mistake in the connection, and there was also a risk that poor continuity of the pneumatic passage would occur due to the hose being crushed or coming off. Furthermore, such pneumatic passages have the problem of requiring a large space for connecting and routing the hoses.

Therefore, in order to solve such problems, the applicant of the present application previously proposed a pneumatic circuit device as U.S. Pat. No. 60-137273. That is, according to this invention, a pneumatic circuit is formed by overlaying a sealing material covering a circuit groove on a base plate provided with a circuit groove corresponding to a predetermined pneumatic circuit configuration. Therefore,
The pneumatic passage, which was conventionally formed by a hose made of rubber or the like, is now integrally formed with a predetermined circuit configuration inside the pneumatic circuit device, making connection to a predetermined pneumatic device extremely easy. This can be done with good workability, and the occurrence of poor conductivity due to hose collapse or disconnection can be completely avoided, and in such a pneumatic circuit device, the pneumatic circuit is flat Since it is formed in a 3D shape, it can be installed well even in a limited space.

By the way, in the case of such a pneumatic circuit device, a substantially thin plate-shaped pressing plate is usually disposed in contact with the outer surface of the sealing material over substantially the entire surface thereof.
The base is fixed with screws or the like, with the outer surface of the holding plate in contact with a predetermined fixing member that accommodates a pneumatic device such as a pneumatic switch to be connected to the pneumatic circuit. It will be installed depending on the situation. That is,
In such an attached state, the outer surface of the holding plate is pressed by the outer surface of the fixing member, so that
The seal rubber is pressed against the inner surface of the base, so that the pneumatic passage can be effectively sealed by the seal rubber.

(Problem) However, in the case of the above-mentioned pneumatic circuit device, the pneumatic circuit formed inside the device is usually formed in a planar form on the base surface, so the pneumatic circuit is particularly complicated. In such a case, the width of the pneumatic circuit device is larger than the width of the abutting part of the fixing member to be attached, so that the fixing member contacts the holding plate of the pneumatic circuit device over the entire surface during installation. There were cases where this could not have been done.

If it is installed in such a state, the pressing force against the seal rubber at the outer edge of the holding plate that is not in contact with the fixing member will be insufficient, resulting in poor sealing between the inner surface of the base plate and the inner surface of the base plate. However, since the contact area of the pneumatic circuit device was small, it was difficult to attach the pneumatic circuit device to the fixing member with sufficient strength. They also had problems that they said could never be solved.

(Solution Means) Here, the present invention has been made to solve the above-mentioned problems, and its feature is that, as mentioned above, a plurality of pneumatic passages extending from a pneumatic device are integrated. In a pneumatic circuit device formed as a pneumatic circuit device, the housing has a rising portion of a predetermined height on its peripheral edge and a circuit groove is carved on the inner surface so as to correspond to a predetermined pneumatic circuit configuration, and a sealing rubber forming a pneumatic circuit; a presser plate that presses the sealer rubber against the inner surface of the housing; a reinforcing plate that is large enough to cover the entire surface of the presser plate and come into contact with at least a rising portion of the periphery of the housing; A tightening means for tightening the housing, the seal rubber, and the holding plate together with the reinforcing plate against a predetermined fixing member that is brought into contact with the back surface of the reinforcing plate, and a fixing means for directly fixing the reinforcing plate and the fixing member. This is due to the fact that it was configured to include.

(Effect of the invention) Therefore, in the pneumatic circuit device having the structure according to the present invention, it is difficult to fix the main body of the pneumatic circuit device, which is composed of a housing, a seal rubber, and a holding plate, and has a predetermined pneumatic circuit therein. Attachment to the member is done through a reinforcing plate fixed to the fixed member, and the surface of this reinforcing plate that comes into contact with the pneumatic circuit device body covers the entire surface of the holding plate and covers the housing. Since it has a size that can at least abut against the rising part of the peripheral edge, when it is installed, the pressing force against the presser plate can be effectively applied over the entire surface, and therefore the air pressure caused by the seal rubber can be applied effectively. The sealing function of the passage can be effectively exhibited, air leakage can be extremely effectively prevented, and the pneumatic circuit device main body can be attached to the fixing member with sufficient strength.

(Example) Hereinafter, in order to clarify the present invention more specifically, an example having a structure according to the present invention will be described in detail with reference to the drawings.

First, FIG. 1, FIG. 2, and FIG.
A sectional view is shown in FIG. 4, and an exploded view is shown in FIG. As is clear from these figures, the pneumatic circuit device in this embodiment is attached to a fixed member 10 in which four pneumatic switches are housed, and predetermined ports of each of these switches are connected to each other. It is equipped with a pneumatic circuit for communication.

These pneumatic switches 12 each have 3
By sliding the operation part protruding from the front wall of the housing in the longitudinal direction of the housing, the central switching port can be switched between the two switching ports on both sides. While alternatively communicating with one of them,
It has a structure that reliably isolates the remaining switching ports from the two switching ports that communicate with them.
The structure disclosed in the sliding air passage selector switch proposed as No. 70825 is applicable.

The pneumatic circuit device attached to the fixing member 10 equipped with such a pneumatic switch 12 includes a housing 14, a seal rubber 16, and a pressing plate 1, as shown in FIGS. 1 to 4.
8 and the fixing member 1.
The device body is formed by being fixed to the fixing member 10 via the reinforcing plate 20.

The housing 14 is shown in FIGS. 4, 5, and 6.
As shown in the figure, a joint portion 24 is integrally formed on the front surface of a main body 22 having a substantially rectangular plate shape. The joint portion 24
As shown in Figures 3 and 5,
It has five ports 26 and two locking claws 2.
Each port 2 is connected to a predetermined joint (not shown) at 8, 28.
6 is connected to a diaphragm, an air pressure source, etc. Further, as shown in FIGS. 4 and 6, on the surface of the main body 22 opposite to the side on which the joint portion 24 is provided, a rising portion 30 of a predetermined height is provided at the peripheral edge thereof. A seal rubber 16 and a pressing plate 18 are provided.
A recess 32 is formed in which the is housed. The joint portion 2 is provided on the bottom surface of the recess 32.
A circuit groove 34 is cut for forming a pneumatic circuit that connects five ports 26 formed in the seal rubber 4 and a connection port formed in the seal rubber 16 described later in a predetermined combination.

Further, as shown in FIGS. 4 and 7, the seal rubber 16 has a plate shape with a planar shape corresponding to the recess 32 of the housing 14, and on its back surface, the four air pressure Ten connection ports 36, which are respectively connected to the switching ports of the switch 12, are arranged upright on a straight line in the longitudinal direction.

Further, as shown in FIGS. 4 and 8, the holding plate 18 has approximately the same planar shape as the seal rubber 16, and corresponds to the connection port 36 provided upright on the seal rubber 16. At the position where the connection port 36 is inserted, there is a through hole 38 through which the connection port 36 is inserted.
is provided. In addition, regarding the presser plate 18 in this embodiment, FIGS. 2, 3, and 8
As shown in the figure, at the outer peripheral edge of the surface that comes into contact with the seal rubber 16, the seal rubber 16
A convex edge portion 39 is formed that protrudes at a predetermined height toward the outer peripheral edge of the seal rubber 16, so that the sealing performance at the outer peripheral edge of the seal rubber 16 can be more effectively improved.

Then, as shown in FIG. 4, the seal rubber 1 is inserted into the recess 32 of the housing 14.
6 and the holding plate 18 are fitted, and the circuit groove 34 cut on the bottom surface of the housing 14 is covered with the seal rubber 16, thereby integrally connecting the joint part 24, the pneumatic circuit 40, and the connection port 36. The main body of the pneumatic circuit device is designed to be equipped with the following.

On the other hand, the reinforcing plate 20 interposed between the main body of the pneumatic circuit device and the fixing member 10 is
As shown in FIGS. 1 to 4 and 9, it is a substantially plate-shaped member that comes into contact with the back surface of the pneumatic circuit device main body, and its front part is a presser for the pneumatic circuit device main body. A contact portion 50 that constitutes a contact surface large enough to cover the entire back surface of the plate 18 and also cover the end surface of the rising portion 30 of the housing 14.
In addition, reinforcing side portions 52, 5 of a predetermined length are bent at a substantially right angle toward the side opposite to the corresponding contact surface at both upper and lower edges of the corresponding contact portion 50.
4 is provided to improve the strength of the member of the corresponding contact portion 50. Further, the edge portion of the upper reinforcing side portion 52 is further bent downward over a predetermined width to form a bent portion 56, and at the edge portion of the bent portion 56, two mounting pieces 58, 58
is integrally bent and extended in a direction substantially perpendicular to the contact portion 50. Furthermore,
The contact portion 50 of the reinforcing plate 20 is provided with an insertion hole 44 through which the connection port 36 is inserted, at a portion corresponding to the connection port 36 provided in the pneumatic circuit device. And such reinforcing plate 2
0, the mounting piece 58 is in contact with the mounting surface of the fixing member 10 to which the pneumatic circuit device is to be connected, on the opposite side of the surface of the contact portion 50 that contacts the presser plate 18. , 58 are directly fixed to the upper part of the fixing member 10 with two screws 42, 42 inserted into screw insertion holes 60, 60 provided in the fixing member 10.

Therefore, the pneumatic circuit device in this example is as follows:
As shown in FIG. 4, the housing 14,
A pneumatic circuit device main body constituted by the seal rubber 16 and the pressing plate 18 is formed by being attached to the fixing member 10 via the reinforcing plate 20 fixed to the fixing member 10. This attachment is accomplished by tightening and fixing the housing 14 to the fixing member 10 using tightening bolts 48 inserted through bolt insertion holes 46 provided through each member. Based on the tightening force of this tightening bolt 48, the seal rubber 16, on which the pressing plate 18 is arranged on the back side, is tightened between the housing 14 and the reinforcing plate 20, and is pressed against the bottom surface of the housing 14. Therefore, the pneumatic circuit 4
0 is formed. In addition, during such installation, as shown in FIGS. 1 to 3, the switching ports of the pneumatic switch 12 accommodated in the fixing member 10 are fitted into each connection port 36 of the seal rubber 16, respectively. At the same time, a joint (not shown) having a port communicating with a predetermined diaphragm or a pneumatic pressure source is connected to the joint portion 24 of the housing 14, thereby controlling the switching of each pneumatic switch 12. According to the operation, the pneumatic pressure sources connected to the respective diaphragms are switched, forming a pneumatically actuated device that can obtain a predetermined operating state.

As is clear from the above description, in the pneumatic circuit device of this embodiment, the attachment of the pneumatic circuit device main body, which is integrally provided with a predetermined pneumatic circuit therein, to the fixing member 10 to be connected to such a device A reinforcing plate 2 fixed to the fixing member 10, which has a contact surface that can cover the entire back surface of the main body.
0, the pressing force against the pressing plate 18 that presses the seal rubber 16 against the inner surface of the housing 14 can be effectively applied over the entire surface of the pressing plate 18, thereby preventing local insufficient pressing force. Air leakage caused by this can be extremely effectively prevented. Further, the reinforcing plate 20 is also in contact with the end face of the rising portion 30 of the housing 14 on its front side, and is directly fixed to the fixing member 10 of the device main body. The pneumatic circuit device can be fixed with sufficient strength, and the strength of the pneumatic circuit device can thereby be effectively improved.

Although one embodiment having a structure according to the present invention has been described in detail above, this is a literal illustration, and the present invention should not be construed as being limited to such a specific example.

For example, the present invention has a major feature in that the main body of the pneumatic circuit device, which is integrally equipped with a predetermined pneumatic circuit therein, is attached to a predetermined fixing member via a reinforcing plate. This results in excellent effects as mentioned above,
The specific shape and size of the housing, seal rubber, or presser plate that constitute the main body of the device are not limited, and may be changed as appropriate depending on the number and shape of pneumatic devices to be connected.
That is, for example, the housing 14 constituting the pneumatic circuit device in the above embodiment has a plurality of ports 2 connected to a predetermined pneumatic source or the like on its front surface.
However, without providing such a joint part, a predetermined pneumatic actuating device such as a pneumatic switch, a pneumatic pressure source, and a diaphragm can be connected to the connection port formed in the seal rubber 16. It is also possible to create a structure in which the desired pneumatic actuator is formed by connecting the two.

Further, in the above embodiment, the fixing means for fixing the reinforcing plate 20 to the fixing member 10 was composed of two screws 42, but various other known fixing methods such as welding may also be used. Furthermore, the member may be integrally formed to extend from the mounting surface of the fixing member to form a contact surface having a predetermined area.

Further, the shape of the reinforcing plate 20 may be such that it covers the entire surface of the pressing plate 18 and has a contact portion large enough to at least abut against the rising portion 30 on the periphery of the housing 14. It is by no means limited to.

In addition, in the embodiments described above, the present invention is applied to a pneumatic actuator having a structure in which the pneumatic actuating means (diaphragm) is switched and connected to a predetermined air pressure source via a pneumatic switch. Of course, the present invention can be applied as a pneumatic circuit in various other pneumatic devices, and the excellent effects of the present invention as described above can be effectively exhibited in such devices as well.

Although not listed in detail, the present invention may be implemented with various changes, modifications, improvements, etc. based on the knowledge of those skilled in the art, and such embodiments may be implemented in accordance with the present invention. It goes without saying that any of these are included within the scope of the present invention as long as they do not depart from the spirit of the invention.

[Brief explanation of the drawing]

1 is a plan view showing an embodiment of the pneumatic circuit device according to the present invention, FIG. 2 is a sectional view taken in FIG. 1, FIG. 3 is a sectional view taken in FIG. 1, and FIG. 2 is an exploded explanatory view of the pneumatic circuit device shown in FIG. 1. FIG. 5 is a front view of the housing used in the pneumatic circuit device shown in FIG. 1, FIG. 6 is a rear view thereof, and FIG. 7 is a housing used in the pneumatic circuit device shown in FIG. FIG. 8 is a rear view of a holding plate used in the pneumatic circuit device, and FIG. 9 is a rear view of a reinforcing plate used in the pneumatic circuit device. . 10: Fixed member, 14: Housing, 16: Seal rubber, 18: Holding plate, 20: Reinforcement plate, 3
0: Rising part, 34: Circuit groove, 40: Pneumatic passage, 42: Screw, 48: Tightening bolt.

Claims (1)

[Scope of utility model registration request] A housing having a rising portion of a predetermined height on its peripheral edge and having a circuit groove carved on its inner surface to correspond to a predetermined pneumatic circuit configuration; a seal rubber that covers the circuit groove to form the pneumatic circuit; a presser plate that presses the seal rubber against the inner surface of the housing; a reinforcing plate that covers the entire surface of the presser plate and is large enough to come into contact with at least a rising portion of the periphery of the housing; and a reinforcing plate that is brought into contact with the back surface of the reinforcing plate. A pneumatic circuit characterized in that it includes a tightening means for tightening the housing, the seal rubber, and the holding plate together with the reinforcing plate against a predetermined fixing member, and a fixing means for directly fixing the reinforcing plate and the fixing member. Device.