JP7049706B1 - Switching valve and switching valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching valve and a switching valve device capable of saving labor. SOLUTION: This is a switching valve 1 that can be connected to a rotation drive source M that is rotationally driven around a rotation axis A and can switch a fluid flow path. The switching valve 1 is housed in the supports 21 to 24 having the internal spaces 21a to 24a and the internal spaces 21a to 24a in a state of being rotatable around the rotation axis A, and is connected to the rotation drive source M. Including 34. The supports 21 to 24 include external ports 21p to 24p that send or receive fluid. The rotating bodies 31 to 34 include valve chambers 31a to 34a for accommodating the fluid and internal ports 31p to 34p communicating with the valve chambers 31a to 34a. The rotating bodies 31 to 34 rotate around the rotation axis A with respect to the supports 21 to 24 at a predetermined rotation angle so that the internal ports 31p to 34p can be selectively fluid-connected to the external ports 21p to 24p. Occasionally, it is provided at a position overlapping the external ports 21p to 24p. [Selection diagram] FIG. 1B

Description

The present invention relates to a switching valve and a switching valve device.

For example, a switching valve is used to switch the flow path of a fluid such as air. As the switching valve, an electromagnetic switching valve (so-called solenoid valve (solenoid valve)) that switches the opening and closing of the port by an electromagnetic force generated by energizing an electromagnet such as a solenoid coil is used. Generally, the electromagnetic switching valve switches the opening and closing of the port by the linear reciprocating motion of the valve body (see, for example, Patent Document 1), and the port is in the open state when the power is off, so-called "normal". It is roughly divided into "open type" and so-called "normally closed type" in which the port is closed when the power is off.

Japanese Unexamined Patent Publication No. 2012-241740

In the case of a "normally open type" electromagnetic switching valve, it is necessary to keep the electromagnet energized in order to keep the port closed. On the other hand, in the case of the "normally closed type" electromagnetic switching valve, it is necessary to keep the electromagnet energized in order to keep the port open. Therefore, when using either the "normally open type" or "normally closed type" electromagnetic switching valve alone or in combination as the switching valve, the port is open or closed. It is necessary to keep the electromagnet energized when maintaining. Therefore, when using an electromagnetic switching valve, there is a concern that power consumption will increase.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a switching valve and a switching valve device capable of saving labor.

The switching valve according to the embodiment of the present invention is a switching valve that can be connected to a rotation drive source that is rotationally driven around a rotation axis and can switch the flow path of the fluid, and the switching valve has an internal space. Includes a support having and a rotating body rotatably housed in the internal space around the axis of rotation and connectable to the rotation drive source, the support delivering or receiving the fluid. The rotating body is provided with a valve chamber for accommodating the fluid and an internal port communicating with the valve chamber, so that the internal port can be selectively fluid-connected to the external port. In addition, when the rotating body rotates with respect to the support at a predetermined rotation angle around the rotation axis, the rotating body is provided at a position overlapping with the external port.

The external port includes at least a first external port and a second external port, the internal port includes at least a first internal port and a second internal port, and the first internal port is the first internal port. Provided at a position overlapping with the first external port when the rotating body rotates at the first rotation angle around the rotation axis with respect to the support so that the rotating body can be fluidly connected to the external port of 1. When the rotating body rotates around the rotation axis at a second rotation angle with respect to the support so that the second internal port can be fluidly connected to the second external port. , May be provided at a position overlapping the second external port.

The valve chamber includes at least a first valve chamber and a second valve chamber, a first internal port communicates with the first valve chamber, and the second internal port is the second valve. The first valve chamber and the second valve chamber may be isolated from each other by communicating with the chamber.

The support has at least a first support having a first internal space accommodating the first support and a second support having a second internal space accommodating the second support. The rotating body comprises, at least, a first rotating body that can rotate about the axis of rotation with respect to the first support, and a second rotating body that can rotate about the axis of rotation with respect to the second support. The first external port is provided on the first support, the second external port is provided on the second support, and the first internal port is provided with two rotating bodies. Is provided on the first rotating body, the second internal port is provided on the second rotating body, and the first support and the second support are along the rotation axis. The first rotating body and the second rotating body may be detachably connected along the axis of rotation.

The first rotation angle and the second rotation angle may be different from each other.

The first rotation angle and the second rotation angle may be the same angle with each other.

The first external port and the second external port may be provided in the same direction as each other so as to intersect the rotation axis.

The first external port and the second external port may be provided in different directions so as to intersect the rotation axis.

The rotating body is provided so as to surround the internal port between the support and the rotating body, and includes a port sealing portion for sealing a gap between the support and the rotating body, and the support is provided. Is provided so as to be recessed from the inner peripheral surface of the support toward the communication port between the external port and the internal space, and the port sealing portion becomes the valve chamber and the external port due to the rotation of the rotating body. When entering the communication port, the port sealing portion is pressed so as to suppress expansion of the port sealing portion, and when the port sealing portion exits from the communication port due to further rotation of the rotating body, the port A port sealing portion correction portion that presses the port sealing portion again so as to guide the sealing portion to the internal space may be provided.

The port sealing portion may be a lip-type packing having a groove-shaped notch extending in the circumferential direction of the inner port on the inner peripheral surface facing the inner port.

The gap between the support and the rotating body may be sealed with a lubricant.

The fluid may be air.

The switching valve device according to an embodiment of the present invention includes the switching valve and a rotation drive source that is rotationally driven around a rotation axis, and the rotating body can maintain a state of being rotated around the rotation axis. As described above, it is connected to the rotary drive source.

According to the switching valve and the switching valve device according to the embodiment of the present invention, labor saving can be achieved.

It is a perspective view which shows the switching valve which concerns on 1st Embodiment of this invention. It is an exploded perspective view which shows the switching valve which concerns on 1st Embodiment of this invention. It is an exploded perspective view which shows one of the supports and one of the rotating body of the switching valve which concerns on 1st Embodiment of this invention. It is an end view which shows the switching valve which concerns on 1st Embodiment of this invention. It is an enlarged end view which shows the modification of the port closed part of the switching valve which concerns on 1st Embodiment of this invention. It is an enlarged end view which shows the other modification of the port sealing part of the switching valve which concerns on 1st Embodiment of this invention. It is an enlarged end view which shows the switching valve which concerns on 1st Embodiment of this invention. FIG. 5 is an enlarged end view showing a state in which the rotating body is rotated clockwise from the state of FIG. 5A. It is an enlarged end view which shows the state which the rotating body further rotated clockwise from the state of FIG. 5B. FIG. 5 is an enlarged end view showing a state in which the rotating body is further rotated clockwise from the state of FIG. 5C. It is a perspective view which shows the switching valve which concerns on 2nd Embodiment of this invention. It is an exploded perspective view which shows the switching valve which concerns on 2nd Embodiment of this invention. It is an end view which shows the switching valve which concerns on 2nd Embodiment of this invention.

Hereinafter, the switching valve and the switching valve device according to the embodiment of the present invention will be described with reference to the accompanying drawings. However, the embodiment shown below is an example, and the switching valve and the switching valve device of the present invention are not limited to the following examples. In addition, in this specification, "perpendicular to A" and a similar expression do not only refer to a direction completely perpendicular to A, but also include being substantially perpendicular to A. do. Further, in the present specification, "parallel to B" and similar expressions are used to include not only the direction completely parallel to B but also substantially parallel to B. do. Further, in the present specification, the term "C shape" and similar expressions are used not only to refer to a complete C shape but also to include a shape (substantially C shape) reminiscent of a C shape in appearance.

(First Embodiment)
1A and 1B show a switching valve 1 and a switching valve device V according to the first embodiment. The switching valve device V according to the present embodiment is a device that drives the fluid flow path to be switched. In the present embodiment, the fluid to be switched by the switching valve device V is air. However, the target fluid is not particularly limited, and may be a gas other than air or a liquid such as water. In the present embodiment, the switching valve device V is used as an air blower that supplies air to the septic tank. However, the application of the switching valve device V is not particularly limited, and can be applied to various applications such as transfer of outside air and liquid, drying and suction of an object. In the present embodiment, the switching valve device V includes a switching valve 1 capable of switching the flow path of the fluid, and a rotation drive source M for rotationally driving around a predetermined rotation axis.

The switching valve 1 is a valve capable of switching between fluid connection and disconnection between a plurality of flow paths. As shown in FIGS. 1A and 1B, the switching valve 1 is configured to be connectable to a rotation drive source M that is rotationally driven around the rotation axis A. In the present embodiment, the switching valve 1 can switch between fluid connection and disconnection of the fluid connection by rotating the rotating bodies 31 to 34, which will be described later, around the rotation axis A. The shape of the switching valve 1 is not particularly limited, but in FIGS. 1A and 1B, the switching valve 1 is formed in a columnar shape (specifically, a cylindrical shape) extending along the rotation axis A. The switching valve 1 is housed in the supports 21 to 24 having the internal spaces 21a to 24a (see FIG. 1B) and the internal spaces 21a to 24a in a state of being rotatable around the rotation axis A, and can be connected to the rotation drive source M. The rotating bodies 31 to 34 are included. The switching valve 1 may further include a connector 4 for fluidly connecting to another device, or may include a fixture 5 for attaching the rotary drive source M to the switching valve 1.

The supports 21 to 24 are members that rotatably support the rotating bodies 31 to 34, as shown in FIGS. 1A and 1B. In the examples of FIGS. 1A and 1B, the supports 21 to 24 form at least a part of the outer shape of the switching valve 1. The shape of the supports 21 to 24 is not particularly limited as long as the rotating bodies 31 to 34 can be rotatably supported, but in the present embodiment, the supports 21 to 24 have an elongated cylindrical shape as a whole (specifically). Has a cylindrical shape). The number of supports 21 to 24 may be one, but in the present embodiment, the supports are composed of a plurality of supports 21 to 24 having internal spaces 21a to 24a, respectively. More specifically, the support accommodates at least a first support 21 having a first internal space 21a (see FIG. 1B) accommodating a first rotating body 31 and a second rotating body 32. It includes a second support 22 having a second internal space 22a (see FIG. 1B). In FIGS. 1A and 1B, the support further accommodates a third support 23 with a third internal space 23a (see FIG. 1B) accommodating a third rotating body 33, and a fourth rotating body 34. Includes a fourth support 24 having a fourth interior space 24a (see FIG. 1B). More specifically, the plurality of supports 21 to 24 have the same shape as each other, and one of the plurality of supports 21 to 24 is detachably connected to the other one along the rotation axis A. It is configured to be able to. That is, in the example of FIGS. 1A and 1B, the first support 21, the second support 22, the third support 23, and the fourth support 24 are arranged on the rotation axis A in this order. Detachably connected along. The connection of the plurality of supports 21 to 24 will be described later.

The internal spaces 21a to 24a of the supports 21 to 24 are spaces for rotatably accommodating the rotating bodies 31 to 34 around the axis of rotation A, as shown in FIG. 1B. The shapes of the internal spaces 21a to 24a are not particularly limited as long as the rotating bodies 31 to 34 can be rotatably accommodated around the axis of rotation A. In the present embodiment, the internal spaces 21a to 24a are spaces extending along the axis of rotation A and having a pillar shape (specifically, a cylindrical shape) slightly larger than the rotating bodies 31 to 34. More specifically, the internal spaces 21a to 24a communicate with each other by connecting a plurality of supports 21 to 24 in series along the rotation axis A, and have an elongated pillar shape as a whole (specifically). Form one continuous space having a cylindrical shape). In the example of FIG. 1B, the first support 21, the second support 22, the third support 23, and the fourth support 24 are connected in this order along the rotation axis A. The first internal space 21a, the second internal space 22a, the third internal space 23a, and the fourth internal space 24a communicate in this order.

Supports 21-24 include external ports 21p-24p that deliver or receive fluid, as shown in FIGS. 1A and 1B.

External ports 21p to 24p are fluid inlets and outlets provided on the supports 21 to 24, as shown in FIGS. 1A and 1B. The external ports 21p to 24p can be fluid-connected to, for example, a plurality of different external channels. The shape of the external ports 21p to 24p is not particularly limited. In the present embodiment, the external ports 21p to 24p have a tubular shape (specifically, a cylindrical shape) having a space communicating with the internal spaces 21a to 24a (see FIG. 1B). The number of external ports 21p to 24p may be one, but in the present embodiment, the external port is composed of a plurality of external ports 21p to 24p. Specifically, the external port includes at least a first external port 21p and a second external port 22p. In FIGS. 1A and 1B, the first external port 21p is provided on the first support 21 and the second external port 22p is provided on the second support 22. In this embodiment, the external port further includes a third external port 23p and a fourth external port 24p. In FIGS. 1A and 1B, the third external port 23p is provided on the third support 23, and the fourth external port 24p is provided on the fourth support 24. The arrangement of the external ports 21p to 24p is not particularly limited as long as fluid connection with the internal ports 31p to 34p described later is possible. In the present embodiment, the external ports 21p to 24p are provided in a direction intersecting the rotation axis A. More specifically, the external ports 21p to 24p are provided in a direction perpendicular to the rotation axis A (hereinafter, also referred to as a "diameter direction"). When a plurality of external ports 21p to 24p (specifically, first to fourth external ports 21p to 24p) are provided as in the present embodiment, the plurality of external ports 21p to 24p are shown in FIGS. 1A and 1A. As shown in 1B, they may be provided in the same direction as each other so as to intersect with the rotation axis A, or may be provided in different directions as they intersect with the rotation axis A.

Next, the connection of the plurality of supports 21 to 24 will be described with reference to FIG. 2 in addition to FIGS. 1A and 1B. FIG. 2 shows one support (specifically, the first support 21) and one rotating body (specifically, the first rotation described later) from the switching valve 1 shown in FIGS. 1A and 1B. It is an exploded view which removed the body 31).

In this embodiment, each of the plurality of supports 21 to 24 (in FIG. 2, only the first support 21 is shown as an example) is one-sided support for connecting to each other along the rotation axis A. A body connecting portion 21m and a support connecting portion 21n on the other end side are provided. In FIG. 2, one end side support connecting portion 21m is a fitting convex portion provided on one end side of the support 21 along the rotation axis A, and the other end side support connecting portion 21n is a support along the rotation axis A. It is a fitting recess provided on the multi-ended side of the body 21. By doing so, the other end side support connecting portion 21n is fitted with the one end side support connecting portion 21m, so that the plurality of supports 21 to 24 (see FIGS. 1A and 1B) can be rotated by the rotation axis A. Can be connected in series along. However, the form of the one-end side support connecting portion 21m and the other end side support connecting portion 21n is not particularly limited. For example, one end side support connecting portion 21m and the other end side support connecting portion 21n may have a pair of engaging tools that engage with each other, a flange that extends radially outward with respect to the rotation axis A, and the like. A known coupling mechanism may be configured.

As shown in FIG. 2, the support 21 may have a connection reinforcing portion 21r that reinforces the connection between the supports 21 to 24 (see FIGS. 1A and 1B) (the first in FIG. 2). Only the support 21 of the above is shown, but the same applies to the other supports 22 to 24). In the present embodiment, the connection reinforcing portion 21r is a fixing portion for mounting and fixing the switching valve 1 (see FIGS. 1A and 1B) on a mounting table (not shown). By fixing the plurality of supports 21 to 24 to the mounting table by the connection reinforcing portion 21r, the connection between the supports 21 to 24 is further strengthened. In FIG. 2, the connecting reinforcing portion 21r has a blade shape protruding outward in the radial direction with respect to the rotation axis A. However, the form of the connecting reinforcing portion 21r is not particularly limited, and a known reinforcing method such as screwing can be adopted as the connecting reinforcing portion 21r. When the connection strength between the supports 21 to 24 is sufficiently obtained by the connection between the one-side support connection portion 21m and the other end side support connection portion 21n, the connection reinforcement portion 21r is not always provided. May be.

In the present embodiment, the support 21 can also be connected to the connector 4 by the one-end side support connecting portion 21 m (see also the support 21 and the connector 4 in FIGS. 1A and 1B). Specifically, as shown in FIGS. 1A and 1B, the connector 4 has a connector connecting portion 4n for coupling with the one-end side support connecting portion 21m. Specifically, the connector connecting portion 4n is an L-shaped notch extending from one end of the connector 4 along the rotation axis A. Further, the one-side support connecting portion 21m specifically has a protruding portion 211m that protrudes outward in the radial direction and has a size that can be fitted into the notch of the connecting tool connecting portion 4n. In this case, the support 21 and the connector 4 are after moving the connector 4 with respect to the support 21 along the rotation axis A so that the protrusion 211 m is inserted into the connector connecting portion 4n. The connector 4 is connected to the support 21 by rotating it around the rotation axis A. Since the connector 4 has the connector connecting portion 4n, any rotating body 31 to 34 can be connected to the connector 4.

Next, the rotating bodies 31 to 34 will be described with reference to FIGS. 3 in addition to FIGS. 1A to 2. FIG. 3 shows the outside after assembling the support (specifically, the first support 21) and the rotating body (specifically, the first rotating body 31 described later) shown in FIG. FIG. 5 is an end view cut along a plane perpendicular to the axis of revolution A so that the port (specifically, the first external port 21p) passes through the extending central axis.

The rotating bodies 31 to 34 are members that can rotate around the rotation axis A with respect to the supports 21 to 24, as shown in FIGS. 1A and 1B. In the present embodiment, the rotating bodies 31 to 34 can be connected to the rotation drive source M so as to be able to maintain the rotated state around the rotation axis A. The number of the rotating bodies 31 to 34 may be one, but in the present embodiment, the rotating bodies are rotatably housed in the internal spaces 21a to 24a of the plurality of supports 21 to 24, respectively. It is composed of rotating bodies 31 to 34. More specifically, the rotating body has at least a first rotating body 31 that can rotate around the rotation axis A with respect to the first support 21 and a rotation axis A around the second support 22. Includes a second rotating body 32 that is rotatable. In FIGS. 1A and 1B, the rotating body has a third rotating body 33 that can rotate around the rotation axis A with respect to the third support 23, and a rotating body about the rotation axis A with respect to the fourth support 24. Includes a fourth rotating body 34 that is rotatable. The shape of the rotating bodies 31 to 34 is not particularly limited as long as it is rotatable with respect to the supports 21 to 24. In the present embodiment, the rotating bodies 31 to 34 are connected to a plurality of rotating bodies 31 to 34 each having a cylindrical shape (specifically, a cylindrical shape) slightly smaller than the internal spaces 21a to 24a of the supports 21 to 24. By doing so, it has an elongated tubular shape (specifically, a cylindrical shape) as a whole. More specifically, the plurality of rotating bodies 31 to 34 have the same shape as each other, and one of the plurality of rotating bodies 31 to 34 is detachably connected to the other one along the rotation axis A. It is configured to be able to. That is, in the example of FIGS. 1A and 1B, the first rotating body 31, the second rotating body 32, the third rotating body 33, and the fourth rotating body 34 are on the rotation axis A in this order. Detachably connected along. The connection of the plurality of rotating bodies 31 to 34 will be described later.

As shown in FIG. 2, the rotating body 31 communicates with the valve chamber 31a containing the fluid (see also the valve chambers 31a to 34a in FIG. 1B) and the valve chamber 31a in a predetermined direction (FIG. 1A). And internal ports 31p-34p in FIG. 1B). In this embodiment, the rotating body 31 further includes a port sealing portion 311 that seals a gap between the support 21 and the rotating body 31.

The valve chambers 31a-34a store the fluid to receive or deliver the fluid. In the present embodiment, as shown in FIG. 1B, the valve chambers 31a to 34a are the internal spaces of the rotating bodies 31 to 34. The shapes of the valve chambers 31a to 34a are not particularly limited. In the present embodiment, the valve chambers 31a to 34a have a columnar shape (specifically, a cylindrical shape) extending along the rotation axis A. More specifically, the valve chamber is composed of a plurality of valve chambers 31a to 34a, and the plurality of valve chambers 31a to 34a have a plurality of rotating bodies 31 to 34 connected in series along the axis of rotation A. It communicates with each other and has an elongated pillar shape (specifically, a cylindrical shape) as a whole. In this embodiment, the valve chamber includes at least a first valve chamber 31a and a second valve chamber 32a. More specifically, the first valve chamber 31a is provided in the first rotating body 31, and the second valve chamber 32a is provided in the second rotating body 32. In this embodiment, the valve chamber further includes a third valve chamber 33a and a fourth valve chamber 34a. More specifically, the third valve chamber 33a is provided in the third rotating body 33, and the fourth valve chamber 34a is provided in the fourth rotating body 34.

When a plurality of valve chambers 31a to 34a are provided, the valve chambers 31a to 34a may be in communication with each other or may be isolated from each other. In the example of FIG. 1B, the first rotating body 31, the second rotating body 32, the third rotating body 33, and the fourth rotating body 34 are connected in this order along the rotation axis A. The first valve chamber 31a, the second valve chamber 32a, the third valve chamber 33a, and the fourth valve chamber 34a communicate in this order. However, all of the plurality of valve chambers 31a to 34a may be individually isolated, or only a part of the plurality of valve chambers 31a to 34a may communicate with each other. For example, unlike FIGS. 1A and 1B, when the rotating body is composed of two rotating bodies (first and second rotating bodies 31, 32), the first valve chamber 31a and the second valve chamber 32a. However, they may be isolated from each other. Further, when the rotating body is composed of three rotating bodies (first to third rotating bodies 31 to 33), the first to third valve chambers 31a to 33a may communicate with each other, and the first to third rotating bodies 31a to 33a may communicate with each other. Two of the first to third valve chambers 31a to 33a may be communicated (the communicating valve chambers may be collectively referred to as the first valve chamber), and the remaining one may be isolated (the above). In order to distinguish it from the first valve chamber, this isolated valve chamber may be referred to as a second valve chamber), and all of the first to third valve chambers 31a to 33a are isolated from each other. You may. When the valve chambers 31a to 34a are isolated into a plurality of valves, the switching valve 1 can independently switch the flow path in the plurality of flow path systems fluidly connected via the isolated valve chambers 31a to 34a. .. In this case, it is possible to control a plurality of flow path systems, for example, supplying the fluid in one flow path system and discharging the fluid in the other flow path system.

The internal ports 31p to 34p are inlets and outlets for fluids provided in the rotating bodies 31 to 34, as shown in FIGS. 1A and 1B. The internal ports 31p to 34p are not particularly limited, but in FIGS. 1A and 1B, they penetrate the side wall of the rotating body 31 to 34 in the direction intersecting the rotation axis A (specifically, the radial direction of the rotation axis A). (See also internal port 31p in FIGS. 2 and 3). In FIGS. 1A and 1B, the internal ports 31p to 34p have a shape (specifically, a circular shape) corresponding to the shapes of the external ports 21p to 24p. The number of internal ports 31p to 34p can be appropriately changed depending on the number of external ports 21p to 24p, but in the present embodiment, the internal port includes a plurality of internal ports 31p to 34p. Specifically, the internal port includes at least a first internal port 31p and a second internal port 32p. In FIGS. 1A and 1B, the first internal port 31p communicates with the first valve chamber 31a and the second internal port 32p communicates with the second valve chamber 32a. In FIGS. 1A and 1B, the first internal port 31p is provided on the first rotating body 31, and the second internal port 32p is provided on the second rotating body 32. In this embodiment, the internal port further includes a third internal port 33p and a fourth internal port 34p. In FIGS. 1A and 1B, the third internal port 33p communicates with the third valve chamber 33a, and the fourth internal port 34p communicates with the fourth valve chamber 34a. In FIGS. 1A and 1B, the third internal port 33p is provided on the third rotating body 33, and the fourth internal port 34p is provided on the fourth rotating body 34.

The rotating bodies 31 to 34 rotate at a predetermined rotation angle around the rotation axis A with respect to the supports 21 to 24 so that the internal ports 31p to 34p can be selectively fluid-connected to the external ports 21p to 24p. Occasionally, it is provided at a position overlapping the external ports 21p to 24p. When the internal ports 31p to 34p overlap with the corresponding external ports 21p to 24p, the port of the switching valve 1 composed of the internal ports 31p to 34p and the external ports 21p to 24p is in an open state (that is, fluid connection is possible). ), And in the non-overlapping state, the port of the switching valve 1 is in the closed state (that is, the fluid cannot be connected). In the present embodiment, the rotating bodies 31 to 34 are first around the axis of rotation A with respect to the supports 21 to 24 so that the first internal port 31p can be fluidly connected to the first external port 21p. It is provided at a position overlapping with the first external port 21p when rotated at a rotation angle. Further, in the present embodiment, the rotating bodies 31 to 34 are located around the rotation axis A with respect to the supports 21 to 24 so that the second internal port 32p can be fluidly connected to the second external port 22p. It is provided at a position overlapping with the second external port 22p when rotated at a rotation angle of 2. Here, in the present specification, the rotation angle is the rotation axis from a certain reference arrangement (for example, an arrangement in which the first external port 21p and the first internal port 31p overlap as shown in FIGS. 1A and 1B). A Refers to the angle of rotation around. In FIGS. 1A and 1B, the first rotation angle and the second rotation angle are different angles from each other. Specifically, the second rotation angle forms an angle of about 90 ° with respect to the first rotation angle around the rotation axis A (clockwise when viewed from the front of the paper in FIGS. 1A and 1B). .. However, the first rotation angle and the second rotation angle are not particularly limited. For example, the first rotation angle and the second rotation angle may be the same angle. In the present embodiment, the rotating bodies 31 to 34 are the third around the axis of rotation A with respect to the supports 21 to 24 so that the third internal port 33p can be fluidly connected to the third outer port 23p. It is provided at a position overlapping with the third external port 23p when rotated at the rotation angle of 3. Further, in the present embodiment, the rotating bodies 31 to 34 rotate around the rotation axis A with respect to the supports 21 to 24 so that the fourth internal port 34p can be fluidly connected to the fourth external port 24p. It is provided at a position where it overlaps with the fourth external port 24p when it is rotated at the fourth rotation angle. In FIGS. 1A and 1B, the third rotation angle and the fourth rotation angle are different angles from each other. Specifically, the third rotation angle forms an angle of about 180 ° with respect to the first rotation angle around the rotation axis A (clockwise when viewed from the front of the paper in FIGS. 1A and 1B), and the third rotation angle is formed. The rotation angle of 4 is about 270 ° with respect to the first rotation angle around the rotation axis A (clockwise when viewed from the front of the paper in FIGS. 1A and 1B). However, the third rotation angle and the fourth rotation angle are not particularly limited. For example, the first to fourth rotation angles may be all the same angle, all may be different angles, or some may be the same angle.

As shown in FIGS. 2 and 3, the port sealing portion 311 suppresses fluid leakage between the external port 21p and the internal port 31p (that is, fluid leakage from the internal space 21a of the support 21). do. In the present embodiment, the port sealing portion 311 is provided so as to surround the internal port 31p between the support 21 and the rotating body 31. The port sealing portion 311 is not particularly limited as long as it can seal the gap between the support 21 and the rotating body 31, but in FIGS. 2 and 3, it is a packing and is in contact with the inner peripheral surface of the support 21. As such, it is partially embedded in the outer wall of the rotating body 31. In FIGS. 2 and 3, the port sealing portion 311 is a squeeze-type packing having a block-shaped cross section. When a squeeze type packing is used as the port sealing portion 311, the port sealing portion 311 is less likely to be twisted and, by extension, less likely to be damaged. However, as shown in FIGS. 4A and 4B, the port sealing portion 311 is a lip-type packing having a groove-shaped notch extending in the circumferential direction of the inner port 31p on the inner peripheral surface facing the inner port 31p. May be good. When a lip type packing is used as the port sealing portion 311, the sealing performance of the port sealing portion 311 is improved. The cross-sectional shape of the lip-shaped packing may be a U-shape as shown in FIG. 4A, and the U-shape may be a shape in which the U-shape expands on one end side (support 21 side) as shown in FIG. 4B. You may.

The gap between the support 21 and the rotating body 31 may be sealed with a lubricant. The port sealing portion 311 may not necessarily be provided if the lubricant can suppress fluid leakage between the outer port 21p and the inner port 31p. Further, when higher airtightness is required between the external port 21p and the internal port 31p, for example, as shown in FIG. 2, the rotating body 31 is placed between the support 21 and the rotating body 31 in the circumferential direction C. An internal space sealing portion 312 may be provided so as to surround it. In FIG. 2, internal space sealing portions 312 are provided on both ends of the rotating body 31 in a direction along the rotation axis A so as to sandwich the port sealing portion 311. In this case, for example, even if the port sealing portion 311 is deteriorated due to wear or the like, the internal space sealing portion 312 can maintain the sealing between the external port 21p and the internal port 31p.

The port sealing portion 311 is fluidly connected between the external port 21p and the internal port 31p (in other words, the inside of the switching valve 1 (for example, the valve chamber 31a) and the outside of the switching valve 1 (for example, the external port 21p). If the pressure difference of the fluid between the devices) is large, it may expand. In this embodiment, as shown in FIGS. 2 and 3, the support 21 suppresses the expansion of the port sealing portion 311. Therefore, the port sealing portion straightening portion 211 is provided (in FIGS. 2 and 3 only the port sealing portion straightening portion 211 provided on the first support 21 is shown, but in the present embodiment, it is actually The other supports 22 to 24 are also provided with port sealing portion correction portions 212 to 214, respectively, as shown in FIGS. 1A and 1B). In FIGS. 2 and 3, port sealing portion correction is provided. The portion 211 is provided separately from the support 21. Specifically, the port sealing portion straightening portion 211 has a tubular shape (specifically, a cylindrical shape) that is one size smaller than the external port 21p. A known mounting mechanism inserted into the external port 21p (in FIGS. 2 and 3, the engagement hole 21pe on the side wall of the external port 21p and the side wall of the port sealing portion straightening portion 211 that can engage with each other). The port sealing portion correction portion 211 may be provided integrally with the support 21. However, the port sealing portion straightening portion 211 may be provided integrally with the support 21. Then, in order to suppress the leakage of fluid from the port sealing portion straightening portion 211, the outer peripheral surface of the port sealing portion straightening portion 211 (specifically, the stepped portion on the outer peripheral surface of the port sealing portion straightening portion 211) and the external port. A known sealing such as an O-ring between the inner peripheral surface of 21p (specifically, the stepped portion on the outer peripheral surface of the port sealing portion straightening portion 211 and the corresponding stepped portion on the inner peripheral surface of the outer port 21p). A structure 212 is provided. In the present embodiment, the port sealing portion straightening portion 211 is inside the support 21 toward the communication port P between the external port 21p and the internal space 21a, as shown in FIG. 5A. The port sealing portion correction portion 211 is provided so as to be recessed from the peripheral surface. In other words, the port sealing portion straightening portion 211 is provided with respect to the rotation axis A (see FIG. 2) from the virtual extension surface IP in which the inner peripheral surface of the support 21 is extended to the communication port P. The amount of the radial dent of the port sealing portion straightening portion 211 is the amount of radial protrusion PJ from the virtual extension surface IP of the port sealing portion 311 due to expansion (FIG. 5C). (See) is set to be smaller. In this embodiment, the port is set to be smaller. In the sealed portion straightening portion 211, the end portion on the communication port P side is smoothly connected to the inner peripheral surface of the support 21 along the virtual extension surface IP at the outer diameter portion, and chamfered at the inner diameter portion (specifically, R). By chamfering), the chamfered portion is provided so as to be gently recessed from the inner peripheral surface of the support 21. However, the port sealing portion straightening portion 211 may be recessed outward in the radial direction with respect to the rotation axis A so as to have a step with the inner peripheral surface of the support 21.

Next, with reference to FIGS. 5A to 5D, suppression of expansion of the port sealing portion 311 by the port sealing portion correcting portion 211 will be further described. 5A to 5D are enlarged end views in the vicinity of the port sealing portion straightening portion 211 and the port sealing portion 311 in FIG.

In the present embodiment, as shown in FIG. 5A, in a state where the rotating body 31 is rotated with respect to the support 21 so that the internal port 31p overlaps with the external port 21p (ports 21p and 31p are open), the port is a port. The sealing portion 311 is pressed against the inner peripheral surface of the support 21 to regulate and suppress its expansion. In the present embodiment, as shown in FIG. 5B, when the port sealing portion 311 then enters the communication port P due to the rotation of the rotating body 31, the port sealing portion correcting portion 211 expands the port sealing portion 311. The port sealing portion 311 is pressed so as to suppress it. That is, the port sealing portion 311 is continuously pressed by the port sealing portion correcting portion 211 from the state of FIG. 5A, so that the expansion thereof is restricted and suppressed. Here, in the present embodiment, the port sealing portion 311 is provided so as to be recessed from the inner peripheral surface of the support 21 toward the communication port P between the outer port 21p and the internal space 21a as the rotation of the rotating body 31 progresses. It gradually expands along the outer shape of the port sealing portion straightening portion 211, and does not expand rapidly. After that, in the present embodiment, as shown in FIG. 5D, when the port sealing portion 311 exits from the communication port P due to the further rotation of the rotating body 31, the port sealing portion correcting portion 211 has the port sealing portion 311 inside. The port sealing portion 311 is pressed again so as to guide the space 21a. At that time, in the present embodiment, the port sealing portion 311 is supported toward the communication port P between the external port 21p and the internal space 21a so that the expanded portion is not caught on the inner peripheral surface of the external port 21p and damaged. It is guided to the internal space 21a while gradually contracting along the outer shape of the port sealing portion straightening portion 211 provided so as to be recessed from the inner peripheral surface of the body 21. As described above, in the present embodiment, the port sealing portion correction portion 211 not only causes the port sealing portion 311 to rapidly expand, but also catches the expanded portion of the port sealing portion 311 on the inner peripheral surface of the outer port 21p. Since it is suppressed, the port sealing portion 311 is less likely to be damaged.

Next, the connection of the plurality of supports 21 to 24 will be described with reference to FIG. 2 and the like.

In this embodiment, as shown in FIG. 2, each of the plurality of rotating bodies 31 to 34 (in FIG. 2, only the first rotating body 31 is shown as an example) is along the rotation axis A. It is provided with one end side rotating body connecting portion 31m and the other end side rotating body connecting portion 31n for connecting to each other. In FIG. 2, the one end side rotating body connecting portion 31m is a fitting convex portion provided on one end side of the rotating body 31 along the rotating shaft A, and the other end side rotating body connecting portion 31n rotates along the rotating shaft A. It is a fitting recess provided on the multi-ended side of the body 31. By doing so, the other end side rotating body connecting portion 31n is fitted with the one end side rotating body connecting portion 31m, so that the plurality of rotating bodies 31 to 34 (see FIGS. 1A and 1B) can be rotated shaft A. Can be connected in series along. The shapes of the rotating body connecting portion 31m on the one end side and the rotating body connecting portion 31n on the other end side are not particularly limited. In FIG. 2, the one-end side rotating body connecting portion 31m is provided at one end side of the rotating body 31 along the rotating shaft A at equal intervals in the circumferential direction C of the rotating shaft A, and a plurality of protrusions along the rotating shaft A. It is a convex portion (specifically, four convex portions), and the rotation of the rotating body 31 so that the other end side rotating body connecting portion 31n can be fitted with the convex portion of the one end side rotating body connecting portion 31m. On the other end side along the axis A, a plurality of recesses (specifically, four recesses) recessed along the rotation axis A are provided at equal intervals in the circumferential direction C of the rotation axis A. By doing so, the plurality of rotating bodies 31 to 34 (see FIGS. 1A and 1B) and the like are fitted so that the convex portion of the one-side rotating body connecting portion 31m and the concave portion of the other end side rotating body connecting portion 31n are fitted. It can be connected in series along the axis of revolution A by sequentially shifting it by an angle (90 ° in FIGS. 1A and 1B). In this case, the external ports 21p to 24p of the supports 21 to 24 and the internal ports 31p to 34p of the rotating bodies 31 to 34 have different rotation angles (specifically, the first external port 21p and the first internal port). It overlaps with the rotation angle at which 31p is in the open state at 0 °, 90 °, 180 °, 270 °), and it is possible to open and close each of the plurality of ports of the switching valve 1 according to the rotation angle. can. However, the plurality of rotating bodies 31 to 34 may be connected in series without rotating. In this case, at the same rotation angle, the plurality of ports of the switching valve 1 are opened or closed at the same time. Further, the one end side rotating body connecting portion 31m and the other end side rotating body connecting portion 31n have convex portions and concave portions (in other words, rotating) that uniformly project along the rotating shaft A in the circumferential direction C of the rotating shaft A. It may be a convex portion and a concave portion protruding outward in the radial direction of the shaft A). In this case, the plurality of rotating bodies 31 to 34 can be connected in series while rotating in order at an arbitrary angle.

In the present embodiment, the rotating body 31 can also be connected to the fitting 5 by the other end side rotating body connecting portion 31n (see also the rotating body 34 and the fitting 5 in FIGS. 1A and 1B). Specifically, as shown in FIG. 1B, the fixture 5 has a fixture connecting portion 5m for coupling with the other end side rotating body connecting portion 31n. In FIG. 1B, the fixture connecting portion 5m is in the circumferential direction of the rotating shaft A so that it can be fitted with the rotating body connecting portion 31n on the other end side, similarly to the rotating body connecting portion 31m on the one end side (see FIG. 2). C has a plurality of convex portions (specifically, four convex portions) that are provided at equal intervals and project along the axis of rotation A. Since the fixture 5 has the fixture connecting portion 5 m, any rotating body 31 to 34 (see FIGS. 1A and 1B) can be connected to the fixture 5.

As shown in FIG. 2, the support 21 and the rotating body 31 may have positioning mechanisms 21f and 31f for positioning the rotating body 31 at a predetermined position in the internal space 21a, respectively. Since the support 21 and the rotating body 31 have the positioning mechanisms 21f and 31f, the positional deviation between the external port 21p of the support 21 and the internal port 31p of the rotating body 31 in the direction along the rotation axis A is suppressed. The form of the positioning mechanism 21f and 31f is not particularly limited. In the present embodiment, the support 21 has a support-side positioning portion 21f having a concave shape that is concave in the radial direction with respect to the rotation axis A on the inner peripheral surface of the end portion along the rotation axis A. Further, in the present embodiment, the rotating body 31 projects radially outward with respect to the rotating shaft A to the extent that the support side positioning portion 21f can be inserted into the outer peripheral surface of the end portion along the rotating shaft A. It has a portion 31f. In this case, when the rotating body 31 is inserted into the internal space 21a of the support body 21, the rotating body side positioning portion 31f abuts on the support body side positioning portion 21f in one direction along the rotation axis A, so that the rotating body 31 with respect to the support body 21. The misalignment of the rotating body 31 is suppressed. As a result, the rotating body 31 is positioned in the internal space 21a in the direction along the rotation axis A, so that the external port 21p and the internal port 31p do not overlap when the rotating body rotates with respect to the support 21. Misalignment is suppressed.

The connector 4 is a jig for fluidly connecting the switching valve 1 to another device such as a fluid supply device such as an air pump device for supplying air or a fluid discharge device such as a vacuum pump device for exhausting air. be. The shape of the connector 4 is not particularly limited, but in the present embodiment, as shown in FIGS. 1A and 1B, the connector 4 has a plug shape extending along the rotation axis A. In this embodiment, as shown in FIGS. 1A and 1B, the connector 4 is attached to one end of the switching valve 1 along the rotation axis A by the connector connecting portion 4n described above.

The fixture 5 is a jig for mounting the rotary drive source M to the switching valve 1, as shown in FIGS. 1A and 1B. The shape of the fixture 5 is not particularly limited, but in the present embodiment, as shown in FIG. 1B, the fixture 5 is a shaft that projects in a columnar shape (specifically, a columnar shape) along the rotation axis A. It has a flat disk shape (specifically, a disk shape) having a sealing portion 51 on one side. In the present embodiment, when attached to the switching valve 1, the attachment 5 seals the valve chambers 31a to 34a. Specifically, when attached to the switching valve 1, the shaft sealing portion 51 is inserted into the internal spaces 21a to 24a (fourth internal space 24a in FIGS. 1A and 1B) of the rotating bodies 31 to 34. The valve chambers 31a to 34a (the fourth valve chamber 34a in FIGS. 1A and 1B) are sealed by a known sealing structure 51b provided on the shaft sealing portion 51 such as an O-ring. In the present embodiment, the fixture 5 is attached to the other end of the switching valve 1 along the rotating shaft A by the above-mentioned fixture connecting portion 5n (see FIG. 1B).

As shown in FIGS. 1A and 1B, the rotation drive source M is a power source that rotates the rotating bodies 31 to 34 with respect to the supports 21 to 24 by applying a rotational force to the rotating bodies 31 to 34. be. The rotation drive source M is not particularly limited as long as it can apply a rotational force to the rotating bodies 31 to 34, but is a known electric motor in FIGS. 1A and 1B. In the present embodiment, the rotation drive source M is attached to the switching valve 1 via the fixture 5 at the other end of the switching valve 1 along the rotation shaft A. However, the rotation drive source M may be connected to the switching valve 1 in other forms such as being attached to both ends of the switching valve 1 along the rotation shaft A one by one. In the present embodiment, the rotary drive source M has a drive shaft Ma (see FIG. 1B) that extends along the rotary shaft A and rotates around the rotary shaft A, and the drive shaft Ma extends through the fixture 5. By transmitting the rotation of the above to the rotating bodies 31 to 34, the rotating bodies 31 to 34 are rotated.

According to the switching valve 1 and the switching valve device V according to the present embodiment configured as described above, the rotating body with respect to the supports 21 to 24 so that the internal ports 31p to 34p overlap with the external ports 21p to 24p. By rotating 31 to 34 at a predetermined angle, the port is opened, and by rotating the port so as to deviate from the predetermined angle, the port is closed. That is, in the present embodiment, it is sufficient to supply electric power to the rotational drive source M so that the rotational force is not transmitted to the rotating bodies 31 to 34 when the port is held in the open state and the closed state. Therefore, unlike the electromagnetic switching valve of Patent Document 1, it is not necessary to continue to supply electric power when maintaining at least one of the open state and the closed state of the port. Therefore, labor saving of the switching valve 1 and the switching valve device V can be achieved. The term "labor saving" here refers to the reduction of the amount of energy required to drive the switching valve device V, and when the switching valve device V is driven by the above-mentioned electric motor, the power consumption is reduced. Point to.

In the present embodiment, the supports 21 to 24 include a plurality of external ports 21p to 24p (for example, a first external port 21p and a second external port 22p), and the rotating bodies 31 to 34 include a plurality of internal ports 31p to. Since it is provided with 34p (for example, the first internal port 31p and the second internal port 32p), it is possible to switch the flow path corresponding to the number of external ports 21p to 24p. That is, in the present embodiment, it is possible to easily obtain a switching valve that can switch the flow path between a large number of ports by simply increasing the number of the external ports 21p to 24p and the internal ports 31p to 34p. Therefore, unlike the electromagnetic switching valve of Patent Document 1, switching of the flow path between a large number of ports is not structurally difficult.

In this embodiment, the plurality of supports 21 to 24 (for example, the first support 21 and the second support 22) and the plurality of rotating bodies 31 to 34 (for example, the first rotating body 31 and the second support 22). Each of the rotating bodies 32) is detachably connected. Therefore, for example, external ports 21p to 24p (for example, the first external port 21p and the second external port 22p) are provided on each of the plurality of supports 21 to 24, and each of the plurality of rotating bodies 31 to 34 is provided. If the internal ports 31p to 34p (for example, the first internal port 21p and the second internal port 32p) are provided in the above, the work of attaching or detaching the plurality of rotating bodies 31 to 34 and the plurality of supports 21 to 24 is performed. Only by itself, the number of ports of the switching valve 1 can be easily increased or decreased.

When the switching valve 1 has a plurality of ports (for example, the supports 21 to 24 include a first external port 21p and a second external port 22p, and the rotating bodies 31 to 34 have a first external port 21p. And if it has a first internal port 31p and a second internal port 32p to correspond to a second external port 22p), a plurality of external ports 21p-24p (eg, a first external port 21p and a second). External ports 22p) are provided in different circumferential directions C with respect to the rotation axis A, or a plurality of corresponding internal ports 31p to 34p (for example, the first internal port 31p and the second internal port 32p) are rotated. By providing the axes in different circumferential directions C with respect to the axis A, the port can be opened and closed at different rotation angles (for example, a first rotation angle and a second rotation angle). Further, a plurality of external ports 21p to 24p (for example, a first external port 21p and a second external port 22p) are provided in the same circumferential direction C with respect to the rotation axis A, and a plurality of corresponding internal ports 31p are provided. By providing ~ 34p (for example, the first internal port 31p and the second internal port 32p) in the same circumferential direction C with respect to the rotation axis A, the ports have the same rotation angle (for example, the first rotation angle). Can be opened and closed. As described above, in the present embodiment, the installation angles of the external ports 21p to 24p and / or the installation angles of the plurality of internal ports 31p to 34p are adjusted, and the rotating bodies 31 to 34 are rotated at a desired rotation angle. The desired port can be opened and closed.

In the present embodiment, the support 21 is provided with a port sealing portion correction portion 211 that presses the port sealing portion 311 so as to suppress the expansion of the port sealing portion 311 in the external port 21p. Specifically, the port sealing portion straightening portion 211 presses the port sealing portion 311 so as to suppress the expansion of the port sealing portion 311 when the port sealing portion 311 enters the communication port P due to the rotation of the rotating body 31. do. In this case, the port sealing portion 311 does not expand rapidly but gradually expands, so that the port sealing portion 311 is less likely to be damaged. Further, the port sealing portion correcting portion 211 specifically presses the port sealing portion 311 again so as to guide the port sealing portion 311 to the internal space 21a when the port sealing portion 311 exits from the communication port P. .. In this case, the port sealing portion 311 is guided to the internal space 21a while gradually contracting so that the expanded portion is not caught on the inner peripheral surface of the outer port 21p and damaged. Therefore, the port sealing portion 311 is less likely to be damaged.

(Second embodiment)
6A to 7 show the switching valve 10 according to the second embodiment. Note that FIG. 7 shows the central axis on which the external port (specifically, the first external port 21p) extends after the supports 201, 202, the rotating body 30, and the like shown in FIGS. 6A and 6B are assembled. It is an end view cut by the plane perpendicular to the rotation axis A so that it may pass through. In the following description, the differences from the switching valve 1 according to the first embodiment will be described, and the description of the common points with the switching valve 1 according to the first embodiment may be omitted. Further, in FIGS. 6A to 7, the portions having the same functions as those of the first embodiment may be designated by the same reference numerals as those of the first embodiment. The embodiments shown below are merely examples, and the switching valve and the switching valve device of the present invention are not limited to the following embodiments.

As shown in FIGS. 6A and 6B, as in the first embodiment of the present embodiment, the switching valve 10 includes supports 201 and 202 having internal spaces 201a and 202a (see FIG. 6B). Includes a rotating body 30 (see FIG. 6B) that is rotatably housed in internal spaces 201a, 202a around the axis of rotation A and can be connected to a rotation drive source (not shown in FIGS. 6A and 6B). There is.

In this embodiment, the support includes a one-sided support 201 and a lower support 202 that are detachably assembled with each other in a direction perpendicular to the axis of rotation A. Specifically, the one-side support 201 and the lower support 202 have a one-side recess 201a and a lower recess 202a, respectively, when the one-side support 201 and the lower support 202 are assembled. The one-side recess 201a and the lower recess 202a are integrated to form the internal spaces 201a and 202a. The external ports 21p to 24p are not particularly limited, but in the present embodiment, a plurality of external ports 21p to 24p are provided on the one-side support 201. Specifically, the external port includes at least the first external port 21p and the second external port 22p, as in the first embodiment. In FIGS. 6A and 6B, the external port further includes a third external port 23p and a fourth external port 24p. In the present embodiment, the lower support 202 is provided integrally with the connector 40.

As shown in FIG. 6A, the supports 201 and 202 may have an assembly mechanism 10r for assembling the one-side support 201 and the other-side support 202. In the present embodiment, the assembly mechanism 10r includes holding guide portions 201r and 202r (see FIG. 6B) provided on the one-side support 201 and the other-side support 202, respectively, and the one-side support 201 and the other-side support. The holding member 20r guided by the holding guide portion 201r and 202r is provided so as to hold the body 202 in an assembled state. In FIGS. 6A to 7, the sandwiching guide portions 201r and 202r are guide grooves extending in predetermined directions on opposite surfaces of the assembly surface AF of the one-side support 201 and the other-side support 202, respectively. Specifically, the sandwiching guide portions 201r and 202r are the one-side flange 201f and the other side that extend the assembly surface AF of the one-side support 201 and the other-side support 202 radially outward with respect to the rotation axis A. The flange 202f is provided on the opposite surface of the assembly surface AF. Further, in FIGS. 6A to 7, the sandwiching member 20r has a C-shaped cross section extending in the direction along the rotation axis A, and both ends of the C-shape are attached to the rotation axis A by the sandwiching guide portions 201r and 202r. By being guided in the along direction, the one-side support 201 and the other-side support 202 are sandwiched. However, the pinching guide portions 201r and 202r may have a ridge shape, and the pinching member 20r may have a groove-shaped shape. In FIGS. 6A to 7, the sandwiching member 20r sandwiches the one-side support 201 and the other-side support 202 on both sides of the one-side flange 201f and the other-side flange 202f in the radial direction. However, for example, when the other side in the radial direction of the one-side flange 201f and the other-side flange 202f has a hinge mechanism and the supports 201 and 202 can open and close the internal spaces 201a and 202a in the form of double doors, the sandwiching member. The 20r may sandwich the one-side support 201 and the other-side support 202 only on one side in the radial direction of the one-side flange 201f and the other-side flange 202f. Further, as the assembling mechanism 10r, a known assembling mechanism such as screwing or assembling by engagement can be adopted.

In the present embodiment, the rotating body 30 is configured as one member. The rotating body 30 is not particularly limited, but in the present embodiment, similarly to the first embodiment, the rotating body 30 includes a plurality of internal ports 31p to 34p so as to correspond to the external ports 21p to 24p. Specifically, the internal port includes at least a first internal port 31p and a second internal port 32p. In FIGS. 6A and 6B, the internal port further includes a third internal port 33p and a fourth internal port 34p. In the present embodiment, the rotating body 30 is provided integrally with the fixture 50.

Similar to the first embodiment, the switching valve 10 may have a port sealing portion 203 and an internal space sealing portion 204 in order to suppress leakage of fluid from the internal spaces 201a and 202a. In the present embodiment, as shown in FIG. 7, the port sealing portion 203 is in contact with the outer peripheral surface of the rotating body 30, and is the inner wall of the supports 201, 202 (specifically, the one-side support 201). It is partially buried in. Further, in the present embodiment, as shown in FIG. 7, the internal space sealing portion 204 is provided between the one-side support 201 and the other-side support 202 so as to surround the internal spaces 201a and 202a. There is.

As shown in FIG. 6B, the supports 201, 202 and the rotating body 30 have the positioning mechanism 20f for positioning the rotating body 30 at predetermined positions in the internal spaces 201a and 202a, respectively, as in the first embodiment. , 30f may be possessed. In the present embodiment, the positioning mechanisms 20f and 30f are provided on the outer peripheral surface of the rotating body 30 so as to sandwich the internal ports 31p to 34p in the directions along the rotation axis A, and have a groove shape extending in the circumferential direction C with respect to the rotation axis A. 20f of a ridge-shaped support side positioning mechanism provided on the inner peripheral surfaces of the supports 201 and 202 and extending in the circumferential direction C with respect to the rotation axis A so as to correspond to the rotating body side positioning mechanism 30f and the rotating body side positioning mechanism 30f. And include. However, the positioning mechanisms 20f and 30f are not particularly limited, and the support side positioning mechanism 20f may have a groove shape, and the rotating body side positioning mechanism 30f may have a ridge shape.

Similar to the switching valve 1 according to the first embodiment, the switching valve 10 according to the present embodiment is configured so that a rotation drive source (not shown) can be connected to the fixture 50, and is configured around the rotation axis A. By connecting the rotating body 30 to the rotation drive source so that the rotated state can be maintained, a switching valve device (not shown) can be obtained.

According to the switching valve 10 and the switching valve device according to the present embodiment configured as described above, the port of the switching valve 1 is in the open state as in the switching valve 1 and the switching valve device V according to the first embodiment. Alternatively, when the valve is kept in the closed state, power may not be supplied to the rotary drive source so that the rotary force is not transmitted to the rotating body 30. That is, unlike the electromagnetic switching valve of Patent Document 1, it is not necessary to continue to supply electric power when maintaining at least one of the open state and the closed state of the port. Therefore, labor saving of the switching valve 10 and the switching valve device can be achieved.

Further, in the present embodiment, since the number of parts constituting the switching valve 10 (for example, the number of parts constituting the supports 201, 202 and the rotating body 30) is small, the switching valve 10 and the switching valve device are manufactured at low cost. be able to.

1, 10 Switching valve 10r Assembly mechanism 201, 202 (one side, the other side) Supports 201a, 202a (one side, the other side) Recesses 201a, 202a Internal space 201f, 202f (one side, the other side) Flange 201r, 202r Holding guide part 203, 311 Port sealing part 204 Internal space sealing part 20f Support side positioning mechanism 20f, 30f, 21f, 31f Positioning mechanism 20r Holding member 21 to 24 (1st to 4th) supports 211 to 214 Port sealing Part Correcting part 211e Engagement claw 211m Protruding part 21a to 24a (1st to 4th) Internal space 21f Support side positioning part 21m One end side support connection part 21n Other end side support connection part 21p to 24p (1st to 24p) 4th) External port 21pe Engagement hole 21r Connecting reinforcement part 30 Rotating body 31-34 (1st to 4th) Rotating body 30f Rotating body side positioning mechanism 312 Internal space sealing part 31a-34a (1st to 4th) ) Valve chamber 31f Rotating body side positioning part 31m One end side rotating body connecting part 31n The other end side rotating body connecting part 31p to 34p (1st to 4th) internal ports 4, 40 fittings 4n fitting connecting parts 5, 50 mounting Tool 51 Shaft Sealing part 51b, 212 Sealed structure 5m Fixture connecting part A Rotating shaft AF Assembly surface C Circumferential direction IP Virtual extension surface M Rotation drive source Ma Drive shaft P Communication port PJ port Protrusion from the virtual extension surface of the sealing part Amount V switching valve device

Claims (13)

It is a switching valve that can be connected to a rotation drive source that rotates around the axis of rotation and can switch the fluid flow path.
The switching valve is
A support with an internal space and
It includes a rotating body that is housed in the internal space in a state of being rotatable around the rotation axis and can be connected to the rotation drive source.
The support comprises an external port that sends or receives the fluid.
The rotating body includes a valve chamber for accommodating the fluid and an internal port communicating with the valve chamber.
The internal port overlaps the external port when the rotating body rotates about the support at a predetermined rotation angle with respect to the support so that it can be selectively fluid-connected to the external port. Provided in position ,
The support is at least one of a plurality of supports that can be detachably connected to each other along the axis of rotation.
The rotating body is a switching valve which is at least one of a plurality of rotating bodies which can be detachably connected to each other along the axis of rotation . The support includes a first support and a second support among the plurality of supports, and the first support and the second support are detachably connected to each other. ,
The rotating body includes a first rotating body and a second rotating body among the plurality of rotating bodies, and the first rotating body and the second rotating body are detachably connected to each other. ,
The external port includes at least a first external port and a second external port, the first external port is provided on the first support, and the second external port is the second external port. Provided on the support
The internal port includes at least a first internal port and a second internal port, the first internal port is provided on the first rotating body, and the second internal port is the second internal port. Provided on the rotating body
The first internal port is said to be fluidly connectable to the first external port when the rotating body rotates about the support at a first rotation angle about the axis of rotation. It is installed at a position that overlaps with the first external port,
The second internal port is said to be fluidly connectable to the second external port when the rotating body rotates about the support at a second rotation angle about the axis of rotation. The switching valve according to claim 1, which is provided at a position overlapping with the second external port. It is a switching valve that can be connected to a rotation drive source that rotates around the axis of rotation and can switch the fluid flow path.
The switching valve is
A support with an internal space and
With a rotating body that is housed in the internal space in a state of being rotatable around the rotation axis and can be connected to the rotation drive source.
Including
The support comprises an external port that sends or receives the fluid.
The rotating body includes a valve chamber for accommodating the fluid and an internal port communicating with the valve chamber.
The internal port overlaps the external port when the rotating body rotates about the support at a predetermined rotation angle with respect to the support so that it can be selectively fluid-connected to the external port. Provided in position,
The external port includes at least a first external port and a second external port.
The internal port includes at least a first internal port and a second internal port.
The first internal port is said to be fluidly connectable to the first external port when the rotating body rotates about the support at a first rotation angle about the axis of rotation. It is installed at a position that overlaps with the first external port,
The second internal port is said to be fluidly connectable to the second external port when the rotating body rotates about the support at a second rotation angle about the axis of rotation. It is installed at a position that overlaps with the second external port,
The valve chamber includes at least a first valve chamber and a second valve chamber.
The first internal port communicates with the first valve chamber, and the second internal port communicates with the second valve chamber.
A switching valve in which the first valve chamber and the second valve chamber are isolated from each other. It is a switching valve that can be connected to a rotation drive source that rotates around the axis of rotation and can switch the fluid flow path.
The switching valve is
A support with an internal space and
With a rotating body that is housed in the internal space in a state of being rotatable around the rotation axis and can be connected to the rotation drive source.
Including
The support comprises an external port that sends or receives the fluid.
The rotating body includes a valve chamber for accommodating the fluid and an internal port communicating with the valve chamber.
The internal port overlaps the external port when the rotating body rotates about the support at a predetermined rotation angle with respect to the support so that it can be selectively fluid-connected to the external port. Provided in position,
The external port includes at least a first external port and a second external port.
The internal port includes at least a first internal port and a second internal port.
The first internal port is said to be fluidly connectable to the first external port when the rotating body rotates about the support at a first rotation angle about the axis of rotation. It is installed at a position that overlaps with the first external port,
The second internal port is said to be fluidly connectable to the second external port when the rotating body rotates about the support at a second rotation angle about the axis of rotation. It is installed at a position that overlaps with the second external port,
The support has at least a first support having a first internal space accommodating the first support and a second support having a second internal space accommodating the second support. Equipped with
The rotating body has at least a first rotating body that can rotate about a rotation axis with respect to the first support and a second rotation that can rotate about a rotation axis with respect to the second support. With a body,
The first external port is provided on the first support, and the second external port is provided on the second support.
The first internal port is provided on the first rotating body, and the second internal port is provided on the second rotating body.
The first support and the second support are detachably connected along the axis of rotation.
A switching valve to which the first rotating body and the second rotating body are detachably connected along the rotation axis. The switching valve according to any one of claims 2 to 4, wherein the first rotation angle and the second rotation angle are different angles from each other. The switching valve according to any one of claims 2 to 4, wherein the first rotation angle and the second rotation angle are the same angles as each other. The switching valve according to any one of claims 2 to 6, wherein the first external port and the second external port intersect the rotation axis and are provided in the same direction as each other. The switching valve according to any one of claims 2 to 6, wherein the first external port and the second external port intersect the rotation axis and are provided in different directions from each other. It is a switching valve that can be connected to a rotary drive source that rotates around the axis of rotation and can switch the fluid flow path.
The switching valve is
A support with an internal space and
With a rotating body that is housed in the internal space in a state of being rotatable around the rotation axis and can be connected to the rotation drive source.
Including
The support comprises an external port that sends or receives the fluid.
The rotating body includes a valve chamber for accommodating the fluid and an internal port communicating with the valve chamber.
The internal port overlaps the external port when the rotating body rotates about the support at a predetermined rotation angle with respect to the support so that it can be selectively fluid-connected to the external port. Provided in position,
The rotating body is provided so as to surround the internal port between the support and the rotating body, and includes a port sealing portion for sealing a gap between the support and the rotating body.
The support is provided so as to be recessed from the inner peripheral surface of the support toward the communication port between the external port and the internal space, and the rotation of the rotating body causes the port sealing portion to be recessed from the valve chamber and the valve chamber. When the port sealing portion is pressed so as to suppress the expansion of the port sealing portion when entering the communication port with the external port, and the port sealing portion exits from the communication port due to further rotation of the rotating body. A switching valve comprising a port sealing portion correction portion that represses the port sealing portion so as to guide the port sealing portion to the internal space. The switching valve according to claim 9, wherein the port sealing portion is a lip-type packing having a groove-shaped notch extending in the circumferential direction of the inner port on the inner peripheral surface facing the inner port. The switching valve according to any one of claims 1 to 8, wherein the gap between the support and the rotating body is sealed with a lubricant. The switching valve according to any one of claims 1 to 11, wherein the fluid is air. The switching valve according to any one of claims 1 to 12,
Equipped with a rotation drive source that drives rotation around the axis of rotation,
A switching valve device connected to the rotation drive source so that the rotating body can hold a state of being rotated around the rotation axis.

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