JPH0144867Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a solenoid valve.

BACKGROUND ART Conventionally, solenoid valves have been known that are assembled by joining an electromagnetic operating section and a valve body, which are configured separately from each other. In the above-mentioned solenoid valve, the solenoid operating part and the valve body are connected by bolts (Jikkosho).
No. 54-37058), both members are provided with threaded portions and the threaded portions are screwed together to connect them (see U.S. Pat. No. 3,362,037), or both members are joined by caulking means. There are some that are combined together.

However, these solenoid valves have the following drawbacks. That is, in cases where bolts are used as coupling means, there is not only a problem that the bolts become loose, but also a space is required for the bolts to pass through, making it difficult to downsize. Further, in the case where both members are screwed together, the screwing operation is extremely complicated and the assembly operation is inefficient. Furthermore, in the case of a device using caulking means, there are problems such as poor caulking and loosening of the caulked portion, and it is also difficult to separate the two members, making it difficult to repair them easily.

Problems to be Solved by the Invention The technical problem to be solved by the invention is to maintain a stable state of solid connection between the electromagnetic operating part and the valve body in a solenoid valve over a long period of time, and to The object of the present invention is to obtain a joint structure in which both the above-mentioned members can be easily attached and detached in the event of repair or the like.

Means for Solving the Problems In order to solve the above problems, in the solenoid valve of the present invention, the electromagnetic operation part and the valve body, which are configured separately, are assembled by joining. A pair of locking side plates are provided on a magnetic frame that surrounds the outside of the valve body, and locking windows are cut into the locking side plates through which locking protrusions projecting on both sides of the valve body are inserted. Technically, a resilient member made of an elastic material is removably press-fitted between the edge of the window and the locking protrusion to connect the electromagnetic operating part and the valve body together by pressing the magnetic frame against the valve body. means are adopted.

Effect The above technical means acts as follows. That is,
To connect the electromagnetic operating part and the valve body together, insert the locking protrusion of the valve body into the locking window of the pair of locking side plates in the magnetic frame, and in this state, engage with the edge of the locking window. A resilient member may be press-fitted between the stop projection and the magnetic frame is pressed against the valve body by the resilient force of the resilient member, thereby coupling the electromagnetic operating portion and the valve body. Since this connected state is maintained by the elastic force of the elastic member, a firm connected state is maintained without loosening over a long period of time, and the elastic member is locked in the above connected state. By pulling it out through the window, the electromagnetic operating section and the valve body can be separated and repaired very easily.

Effects According to the electromagnetic valve of the present invention, it is possible to connect the electromagnetic operating part and the valve body by simply modifying the magnetic frame and the valve body, and the work required to connect the two is simple. This is very simple, and compared to the case of connecting with bolts, etc., the space required for inserting the bolts, etc. can be omitted, so the overall size can be reduced.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, reference numerals 1 and 2 represent a valve body and an electromagnetic operating section that are constructed separately from each other, and are separably coupled by a detachable locking mechanism. In addition, in FIG. 1, structural examples of different locking mechanisms are shown in the right half and the left half.

In the embodiment shown in the right half of Fig. 1 and Fig. 2,
The valve body 1 includes a fluid flow path 3 and a valve seat 4 that connects the fluid flow path, and further has grooves 5 recessed in a pair of opposing side surfaces, and a block-shaped engagement from the bottom surface of the grooves 5. The stop projections 6 are formed, and those projections 6
A spring seat 8 is located on the side opposite to the electromagnetic operation section 2.
, and a guide slope 7 is formed on the other side.

The electromagnetic operation unit 2 includes a bobbin 12 around which an electromagnetic coil 11 is wound. A fixed iron core 13 is fitted and fixed to one end of a through hole in the axial center of the bobbin 12. When the coil 11 is energized, The movable core 1 is attracted to the fixed core 13 against the biasing force of the spring 14.
5 is slidably inserted into the movable core 15 in the axial direction.
A valve member 16 for opening and closing the valve seat 4 is attached to the end of the valve. Furthermore, the outside of the bobbin 12 and coil 11 is surrounded by a magnetic plate 17 and a magnetic frame 18.

The magnetic frame 18 constitutes a locking mechanism that removably connects the electromagnetic operating section 2 and the valve body 1. The magnetic frame 18 is made of an elastic material, and as shown in FIGS. 1 to 3, the top plate section 19 , a pair of side plate parts 20, and a pair of locking side plate parts 21 that sandwich the valve body 1, and the locking side plate part 21 is an elastically deformable locking plate sandwiched between a pair of slits 22. It is provided with locking portions 23, the tips of which are slightly curved outward, and a locking window 24 is cut inside the locking portions 23.

Thus, when the locking protrusion 6 of the valve body 1 is inserted into the locking window 24 of the locking part 23 at the tip of the pair of locking side plate parts 21, the locking protrusion 6 of the valve body 1 is locked with the edge 24a of the locking window 24. A substantially U-shaped resilient member 26 made of an elastic material and configured in a bifold shape is removably press-fitted between the spring seat 8 of the protrusion 6, and the resilient member 26
The magnetic frame 18 is brought into pressure contact with the valve body 1 with each seal 27 being compressed by the restoring elastic force that tends to expand and deform, and the electromagnetic operating portion 2 and the valve body 1 are integrally connected.

In addition, in the figure, 28 indicates a power supply terminal.

In order to connect the electromagnetic operating part 2 and the valve body 1 in the solenoid valve having the above configuration, the curved end of the locking part 23 on the locking side plate part 21 of the magnetic frame 18 is guided by the locking protrusion 6 of the valve body 1. The magnetic frame 18 may be brought into pressure contact with the valve body 1 while expanding along the slope 7, whereby the locking portion 23 is guided by the slope 7 of the locking protrusion 6 and slides thereon. It expands elastically, and eventually the locking protrusion 6 is inserted into the locking window 24. As a result, the locking portions 23 of the pair of locking side plate portions 21 are brought into the mounted state shown in FIG. 1 in which they are parallel to each other due to the elastic force. becomes. In this state, if the resilient member 26 is press-fitted from the outside between the edge 24a of the locking window 24 and the spring seat 8 of the locking protrusion 6, the resilient force of the resilient member 26 will cause the magnetic frame 18 to is pressed against the valve body 1, and the electromagnetic operating portion 2 and the valve body 1 are integrally coupled. In this connected state, each seal 27 is in a compressed state. Therefore, if the diameter and material of the seal 27 are appropriately selected, the elastic force of the seal 27 to restore its original state can be absorbed by the electromagnetic operation unit. 2 and the valve body 1.

In order to separate the electromagnetic operating section 2 and the valve body 1 which are in the above-mentioned coupled state, the above-mentioned assembly operation may be performed in the reverse order.

The left half of FIG. 1 shows another example of the structure of the locking mechanism,
The resilient member is previously locked to the valve body.

That is, a resilient member holder groove 31 is recessed adjacent to the locking protrusion 6 in the valve body 1, and the resilient member 32 is placed in the retaining groove 31 with its bent portion facing outward as shown by the chain line. By press-fitting, it is locked to the valve body 1.

Therefore, in order to lock the locking side plate part 21 of the magnetic frame 18 with the elastic member 32, the locking part 23 of the locking side plate part 21 is elastically expanded and deformed outward. The tip of the bent portion of the resilient member 32 is inserted into the locking window 24, and in this state, the locking portion 23 of the locking side plate portion 21 is pressurized toward the valve body. As shown by the solid line in the figure, the magnetic frame 18 is compressed and press-fitted between the edge 24a of the locking window 24 of the locking side plate 21 and the spring seat 8 of the locking protrusion 6, and the magnetic frame 18 is in a state where it cannot be removed from the valve body 1. is locked.

FIG. 4 shows yet another configuration example of the locking mechanism, in which the resilient member is previously locked to the valve body, similar to the case in the left half of FIG.

That is, a resilient member holding groove 31 is recessed adjacent to the locking protrusion 6 in the valve body 1, and a locking hole 35 is formed on the side of the holding groove 31. The resilient member 37 that is locked to the
A locking tongue portion 37b is provided which is curved outward from one side of the character-shaped main body 37a, and the above-mentioned resilient member 3
7 to the valve body 1, as shown by chain lines in the figure, two sides of the main body 37a are press-fitted into the holding groove 31 with the locking tongue 37b inserted into the locking hole 35. It is done by folding. The locking portion 23 of the locking side plate portion 21 of the magnetic frame 18 locks with the valve body 1 in the same manner as in the left half of FIG. It is caught in the hole 35 and is prevented from coming off, and does not come off from the valve body 1.

FIG. 5 shows another example of the structure of the magnetic frame,
Each side plate part is separated by a slit, and is composed of a top plate part 41, a pair of side plate parts 42, and a pair of locking side plate parts 43, and a locking window 44 is cut in the locking side plate part 43. It is set up.

It goes without saying that the valve body may be one in which the fluid flow path is switched by a spool.

[Brief explanation of the drawing]

The right and left halves of Fig. 1 are sectional views showing different embodiments of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of the magnetic frame, and Fig. 4 is a sectional view showing different embodiments of the present invention. FIG. 5 is a partial sectional view showing an example of the structure of the magnetic frame, and FIG. 5 is a perspective view showing another example of the structure of the magnetic frame. DESCRIPTION OF SYMBOLS 1... Valve body, 2... Electromagnetic operation part, 6... Locking protrusion, 18... Magnetic frame, 21... Locking side plate part, 24, 44... Locking window, 24a... End edge, 3
6, 32, 37... elastic member.

Claims (1)

[Scope of utility model registration request] In a device that is assembled by joining an electromagnetic operating section and a valve body that are configured separately,
A pair of locking side plate portions are provided on the magnetic frame surrounding the outside of the electromagnetic operating portion, and locking windows are cut into the locking side plate portions through which locking protrusions projecting on both sides of the valve body are inserted; A resilient member made of an elastic material is removably press-fitted between the edge of the locking window and the locking protrusion to connect the electromagnetic operating section and the valve body together by pressing the magnetic frame against the valve body. A solenoid valve characterized by: