JP4547682B2 - solenoid valve - Google Patents

Description

  The present invention relates to an electromagnetic valve including a flow path switching unit for switching a fluid passage, an electromagnetic operation unit for operating the flow path switching unit, and a power feeding device for energizing the electromagnetic operation unit. About.

A flow path switching unit having a valve body for switching a fluid passage, an electromagnetic operation unit having a movable iron core and an excitation coil for operating the valve body, and a power feeding device for supplying a current to the excitation coil. The provided solenoid valve is well known.
For example, in Patent Document 1, as a power supply device for an electromagnetic valve, a tubular terminal is connected to the tip of a core wire of a power supply line by crimping, and the terminal housing hole formed in the box body of a terminal box (power supply socket) is used. The assembly of the power supply socket is described by inserting the annular terminal and the power supply line. Then, by attaching the power feeding socket to the socket mounting base on the side surface of the solenoid valve, the annular terminal is fitted to the coil terminal protruding from the socket mounting base, and is conducted to the power feeding line.
However, in the conventional power supply apparatus including the above-mentioned Patent Document 1, a power supply socket is usually assembled by inserting a terminal or a power supply line into a hole or a cylinder formed in the box body, and thus requires manual work. In this case, there is a problem that the work is relatively difficult and time is required.

Japanese Utility Model Publication No. 62-3909

A basic problem of the present invention is to simplify the assembly of a power feeding device for feeding power to an electromagnetic operating unit and the mounting to a solenoid valve.
Another object of the present invention is to provide a terminal housing box and a lid without inserting a power supply line and a power supply terminal connected thereto into a hole or a cylinder formed in a socket, as in a conventional power supply device, from outside. In order to facilitate assembly of the power supply socket and connection to the electromagnetic valve in the power supply apparatus.

In order to solve the above problems, the present invention includes a solenoid valve body including a flow path switching unit and an electromagnetic operation unit that operates the flow path switching unit, and a power supply device for supplying power to the electromagnetic operation unit. In the electromagnetic valve, the power feeding device is provided on a side surface of the electromagnetic valve body and is connected to the electromagnetic operation portion, and a terminal cover that is attached to the side surface of the electromagnetic valve body and covers the power reception terminal; A power supply socket having a socket mounting hole provided at a position corresponding to the power receiving terminal of the terminal cover, and a power supply socket attached to a tip of a power supply line and mounted in the socket mounting hole; Has a rectangular box-shaped terminal housing box whose front surface is open, and a lid that closes the front surface of the terminal housing box that is open, and the above-mentioned supply between the terminal housing box and the lid body. Interpose the tip of the wire and the power feeding terminal In this state, the terminal housing box and the lid are coupled to each other so that the power feeding socket is integrally assembled. By mounting the power feeding socket in the socket mounting hole, the power feeding terminal and the power receiving terminal are assembled. The power supply socket is electrically connected to each other, and at least one of the plurality of hole walls surrounding the socket mounting hole is an elastic wall, and a hook portion is formed on the inner surface of the elastic wall. A claw portion is formed on the surface of the surface facing the elastic wall, and the power supply socket is attached in a state in which the power supply socket is retained in the socket mounting hole by elastic engagement between the claw portion and the hook portion. It is characterized by that.

  According to a preferred embodiment of the present invention, a semicircular groove is formed in each of the terminal receiving box and the lid at opposite positions of the feeder line introduction portion, and the feeder line is sandwiched between the semicircular grooves. Yes.

  In the present invention, it is desirable that the terminal housing box and the lid are integrally coupled by locking a protrusion formed on one side and a locking window formed on the other side. Specifically, the terminal housing box has left and right side walls that can be elastically deformed, and a plurality of locking windows formed on the side walls, and the lid body is elastic between the left and right side walls. It is desirable that a plurality of protrusions formed on both side surfaces of the lid body are engaged with the engagement window.

Also, preferably, together with one another two opposite pore walls of the upper Symbol socket mounting holes are the elastic wall, respectively the claws on the back of the back and the lid of the terminal accommodating box in the power supply socket in the present invention The part is formed.

  In this case, the elastic wall extends toward the back of the hole with the end on the hole opening side of the socket mounting hole as a fulcrum, and the end on the back of the hole contacts and separates from the claw of the power supply socket. It is formed so as to be elastically deformed.

  Further, in the present invention, a step portion is formed so as to surround the upper end portion of the socket mounting hole, and a flange portion is formed on the outer periphery of the upper end portion of the power supply socket. When inserted into the socket mounting hole, these flange portions may be configured to abut against and engage with the stepped portion.

  In the electromagnetic valve of the present invention described above, the assembly of the power supply device for supplying power to the electromagnetic operation unit and the mounting to the electromagnetic valve can be simplified. In particular, the power supply line and the power supply terminal connected thereto are sandwiched between the terminal box and the lid without being inserted and attached to the hole or tube formed in the socket from the outside as in the conventional power supply device. As a result, the power supply socket in the power supply apparatus can be easily assembled and connected to the solenoid valve.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, the solenoid valve according to the present invention is roughly divided into a solenoid valve body including a flow path switching unit 2 configured as a three-port directional switching valve and an electromagnetic operation unit 3 for operating the flow path switching unit. 1 and a power feeding device 4 for feeding power to the electromagnetic operation unit 3.
The flow path switching unit 2 has a valve body 10 formed of a substantially square block, and a supply port P, an output port A, and a discharge port R are formed on a first side surface 10 a of the valve body 10. Further, the valve body 10 is provided with a circular hole 13a that forms a valve chamber 13 from an end surface 10c opposite to the end surface to which the electromagnetic operating portion 3 is connected toward the inside of the valve body 10, and this A valve seat block 11 is mounted in the hole 13a, and the valve seat block 11 is fixed in the hole 13a by a fixing plate 12 attached to the end face 10c. A poppet-type valve element 14 is disposed in the valve chamber 13 defined in the hole 13a by the valve seat block 11 so as to be reciprocally movable in the axial direction of the hole 13a.

  The valve seat block 11 is formed with a supply-side passage 15 that allows the supply port P and the valve chamber 13 to communicate with each other. On the other hand, the valve body 10 is formed with a discharge side passage 16 for communicating the discharge port R and the valve chamber 13. The supply valve seat 15a around the opening of the supply-side passage 15 and the discharge valve seat 16a around the opening of the discharge-side passage 16 occupy opposite positions in the valve chamber 13, and between these valve seats The valve body 14 is interposed between the two. The valve body 14 is held by an annular valve holder 17, and a plurality of push rods 18 are disposed between the valve holder 17 and a movable iron core 24 to be described later so as to reciprocate together with the movable iron core 24. Has been. A valve spring 19 is interposed between the annular groove around the supply valve seat 15a and the valve body 14, and the valve body 14 is directed toward the discharge valve seat 16a by the elastic force of the valve spring 19. Is energized.

  An annular bobbin 25 is accommodated in the hollow magnetic cover 21 having an open end and a circular or square cross section of the electromagnetic operating unit 3, and a coil 26 is wound around the bobbin 25. Both ends of 26 are connected to a pair of coil terminals 27 that protrude in parallel from the bobbin 25 and fit into the terminal receiving holes 33 of the valve body 10. FIG. 1 shows one coil terminal connected to one end of the coil 26, and the other coil terminal and the power supply member related thereto are not shown. A fixed iron core 29 is disposed in the inner hole 28 of the bobbin 25 so as to be in contact with the end wall portion 21a of the magnetic cover 21, and a movable iron core 24 magnetically attracted to the fixed iron core 29 is movably arranged. It is installed.

A magnetic plate 30 is interposed between the bobbin 25 and the valve body 10 inside the magnetic cover 21, and the outer periphery of the magnetic plate 30 is brought into contact with the inner surface of the magnetic cover 21. Thus, the magnetic cover 21 and the magnetic plate 30 are magnetically coupled to each other. The inner hole of the magnetic plate 30 has substantially the same diameter as the inner hole 28 of the bobbin 25.
An annular synthetic resin cap 31 is fixed to the distal end of the movable iron core 24, and a return spring 32 is interposed between the flange-shaped spring seat at the distal end of the cap 31 and the annular groove of the magnetic plate 30. Has been.
The flow path switching unit 2 and the electromagnetic operation unit 3 are connected to each other by caulking a locking portion 21b formed in a part of the magnetic cover 21 and locking the locking portion 21b to the concave portion of the valve body 10. .

FIG. 1 shows a state where the coil 26 is not excited. In this state, the return spring 32 having a stronger spring force than the valve spring 19 biases the movable iron core 24 toward the valve body 10 against the biasing force of the valve spring 19. The valve body 14 is transmitted to the valve body 14 via the rod 18 and the valve holder 17, and the valve body 14 abuts on the supply valve seat 15 a of the valve seat block 11 to close the supply valve seat 15 a, and the discharge valve seat 16 a. Open. For this reason, the communication between the supply port P and the valve chamber 13 is blocked, and the output port A and the discharge port R are communicated.
When the coil 26 is energized by energization, a magnetic attractive force is generated in the fixed iron core 29, and the movable iron core 24 is attracted to the fixed iron core 29 by this attractive force, so that the valve body 14 pulls the supply valve seat 15a. Opening and closing the discharge valve seat 16a. For this reason, the communication between the discharge port R and the valve chamber 13 is interrupted, and the supply port P and the output port A communicate with each other.

In FIG. 1, the second side surface 10 b on the opposite side of the first side surface 10 a where the ports P, A, and R of the valve body 10 are formed is located near the electromagnetic operating portion 3. A rectangular and hollow terminal accommodating portion 35 protruding outward from the valve body 10 is formed integrally with the valve body 10. The terminal accommodating portion 35 is formed at a position corresponding to the tip portion of the coil terminal 27 extending in parallel with the second side surface 10b, and has two hollow portions 35a reaching the positions of the coil terminals 27 therein. I have. The first relay terminals 37 are accommodated in the hollow portions 35a, and the first relay terminals 37 and the coil terminals 27 are electrically connected to each other.
Further, the second side surface 10b of the valve body 10 and the side surface 3a of the electromagnetic operating portion 3 are substantially flat or close to a flat surface that does not have a portion that protrudes greatly outside except the terminal accommodating portion 35. The terminal block mounting surface 1a is formed on the side surface of the solenoid valve body 1 by this surface. A terminal block 40 is disposed on the terminal block mounting surface 1 a, a substrate 41 is mounted on the terminal block 40, and a terminal cover 42 covering the terminal block 40 and the substrate 41 is provided on the electromagnetic valve body 1. Installed.

Two receiving terminals 38, 38 whose tips protrude from the upper surface of the substrate 41 are fixed to the substrate 41, and the tips of each receiving terminal 38 are located near the center of the terminal cover 42. It is located at the inner bottom of a rectangular socket mounting hole 70 opened on the upper surface of the cover 42 and is electrically connected to the two power supply terminals 36 and 36 in the power supply socket 45 mounted in the socket mounting hole 70 in a plug-in manner. It is connected. In addition, two second relay terminals 39 and 39 whose front ends protrude downward toward the valve body 10 are fixed to the substrate 41, and each second relay terminal 39 is provided in the terminal accommodating portion 35. The first relay terminals 37 are electrically connected to each other. The second relay terminal 39 is connected to the first relay terminal 37 in a plug-in manner when the substrate 41 is mounted on the terminal block 40 in parallel with the terminal block mounting surface 1a. In addition, electronic components necessary for energization control are fixed to the substrate 41, and the power receiving terminal 38 and the second relay terminal 39 are electrically connected to each other through the electronic components.
As can be seen from FIGS. 1 and 5, the terminal cover 42 has a size that spans the flow path switching unit 2 and the electromagnetic operation unit 3, covers the entire terminal block mounting surface 1 a, It is fixed to the valve body 10 with a fixing screw 43. In addition, two solenoid valve mounting screws 44 are inserted into the through holes provided in the terminal cover 42, the terminal block 40, and the valve body 10, and the solenoid valves are mounted on a manifold or the like by the solenoid valve mounting screws 44. It has become.

Next, the power supply socket 45 that is inserted into the socket mounting hole 70 will be described with reference to FIGS.
In FIG. 2, the power supply socket 45 includes a rectangular housing 46 having a rectangular box shape whose front surface is open, and a split housing 46 including a rectangular lid body 48 that covers the front surface of the terminal housing box 47 that is open. The power supply terminal 36 is composed of two power supply terminals 36 and 36 which are accommodated in the housing 46 and to which a power supply line 49 is connected. The front end of the power supply line 49 is sandwiched between holding arms 36a at the base end of the power supply terminal 36, and the conductive core wire 50 of the power supply line 49 is located at a position adjacent to the holding arm 36a. It is electrically connected to 36 core wire clamping portions 36b. In addition, a terminal connection portion 36c made of a substantially cylindrical elastic clip is integrally provided on one side surface of the distal end portion of the power feeding terminal 36, that is, the side surface facing the terminal housing box 47 side, and the other side surface, A locking piece 36d that projects obliquely toward the base end side of the power supply terminal is integrally formed on the side surface facing the lid 48 side. As shown in FIG. 4, the inner surface 48a of the lid body 48 is formed with a locking step 48b for locking the locking piece 36d, and is connected to the locking step 48b. Due to the locking of the locking piece 36d, the power supply terminal 36 is prevented from coming out of the housing 46.

The terminal accommodating box 47 has two terminal accommodating chambers 54, 54 in the form of concave grooves located adjacent to the inside of the terminal accommodating box 47, and a feeder line 49 is connected to the accommodating chambers 54 extending in the vertical direction. The power supply terminals 36 are accommodated in a locked state. In addition, terminal insertion holes 77 are formed at the bottom of each storage chamber 54, and the power reception terminal 38 is inserted into the storage chamber 54 through the insertion hole 77. The power supply terminal 36 is electrically connected to the terminal connection portion 36c in a plug-in manner.
On the other hand, guide portions 55 and 61 having two semicircular grooves 55a, 55a and 61a, 61a, respectively, into which the power supply line 49 is fitted, are located at positions opposite to each other on the upper ends of the terminal housing box 47 and the lid body 48. The leading end of the feeder line 49 is fitted and sandwiched between the semicircular grooves 55a and 61a that are formed integrally with each other.
As shown in FIG. 2, two locking windows 59, 59 are formed at the upper and lower positions of the left and right side walls 58 of the terminal receiving box 47, and the left and right side surfaces of the lid body 48 are formed on the left and right side walls 58. Two protrusions 63 (only the protrusion 63 on one side is shown) that elastically engages with the engagement window 59 of the terminal accommodating box 47 protrude from the upper and lower positions of the terminal receiving box 47. 59 and the protrusion 63 constitute a locking mechanism for locking the terminal housing box 47 and the lid body 48 in an assembled state.

When attaching the two power supply terminals 36, 36 connected to the power supply line 49 to the housing 46, first, the power supply terminals 36 are accommodated in the accommodating chamber 54 of the terminal accommodating box 47, and the power supply lines are accommodated. 49 is fitted in each semicircular groove 55a. Next, the left and right side surfaces 62 of the lid body 48 are fitted between the side walls 58, 58 on the opening side of the terminal housing box 47, and the lid body 48 is strongly pushed toward the inside of the terminal housing box 47. Then, the side wall 58 of the terminal housing box 47 and the side surface 62 of the lid body 48 are elastically deformed, and the projection 63 of the lid body 48 moves while contacting the inner surface of the side wall 58, so that four projections 63 are provided. The locking window 59 is locked.
Thus, the housing 46 to be inserted into the socket mounting hole 70 of the terminal cover 42 is assembled in a state where the power supply line 49 and the power supply terminal 36 are sandwiched and fixed between the terminal housing box 47 and the lid 48. It is done.
The protrusion 63 may be provided on the side wall 58 of the terminal housing box 47, and the locking window 59 may be provided on the side surface 62 of the lid body 48.

  At the upper and lower positions of the back surface 64 of the lid body 48, a protruding portion 65 and a first claw portion 66 that are raised from the back surface 64 by a certain height are formed, and between the protruding portion 65 and the first claw portion 66, A recess 66 a is formed between them, and a second claw portion 67 is integrally projected on the outer surface of the lower end portion of both side walls 58 of the terminal housing box 47.

  On the other hand, as shown in FIG. 4, of the four hole walls of the rectangular socket mounting hole 70 formed in the terminal cover 42, the hole facing the back surface 64 of the lid 48 of the housing 46. The wall is a first elastic wall 74 that extends in the hole back direction with the upper end as an end on the hole opening side as a fulcrum, and the lower end on the hole back side contacts and separates from the lid body 48. A first hook portion 71 is formed at the lower end portion of the first elastic wall 74 so as to be elastically deformable in the direction and protrudes toward the inside of the hole, that is, toward the lid body 48. Further, as shown in FIG. 3, the two hole walls perpendicular to the first elastic wall 74, that is, the two hole walls facing both side walls 58, 58 of the terminal housing box 47 are also formed in the first wall. Similarly to the first elastic wall 74, second elastic walls 76 and 76 that are elastically deformable are formed, and second hook portions 75 that protrude toward the inside of the holes are formed at the lower portions of the second elastic walls 76, respectively. Has been.

When the power supply socket 45 having the above configuration is mounted in the socket mounting hole 70, the back surface 64 of the lid 48 in the housing 46 is opposed to the first elastic wall 74 of the socket mounting hole 70 (see FIGS. 4 and 5). At the same time, the side wall 58 of the terminal housing box 47 is opposed to the second elastic wall 76 of the socket mounting hole 70 (see FIGS. 3 and 5), and the power supply socket 45 is inserted into the socket mounting hole 70 in this state. Then, the first claw portion 66 on the back surface 64 of the lid body 48 presses the first hook portion 71 of the first elastic wall 74 to elastically deform the first elastic wall 74 to the outside, and at the same time, the terminal accommodating box 47. The second claw portion 67 of the side wall 58 presses the second hook portion 75 of the second elastic wall 76 and elastically deforms the second elastic wall 76 to the outside. The first claw portion 66 and the second claw portion 67 are respectively pushed over the first hook portion 71 and the second hook portion 75 to a position where they are locked to the lower surfaces thereof, and the claw portions 66 and 67 and the hook portion. It is fixed at that position by locking with 71 and 75.
Therefore, the first hook portion 71 and the second hook portion 75 formed in the hole wall of the socket mounting hole 70 and the first claw portion 66 and the second claw portion 67 formed in the housing 46 A socket locking mechanism for locking the socket 45 to the socket mounting hole 70 is configured.
Note that the first claw portion 66 and the first hook portion 71, and the second claw portion 67 and the second hook portion 75 are not necessarily provided, and only one of them may be provided. it can.

Further, a projecting frame 72 projecting upward from the upper surface is integrally formed around the socket mounting hole 70 on the upper surface of the terminal cover 42, and the socket mounting hole 70 is formed on the inner periphery of the projecting frame 72. A stepped portion 73 is formed so as to surround the upper end portion. On the other hand, flange portions 57 and 60 are formed on the outer periphery of the upper end portion of the power supply socket 45 so as to straddle the terminal housing box 47 and the lid body 48, and the power supply socket 45 is inserted into the socket mounting hole 70. In this case, these flange portions 57 and 60 come into contact with and engage with the stepped portion 73. In this state, the claw portions 66 and 67 are locked to the hook portions 71 and 75, so that the feeding socket 45 is prevented from being pulled out. Thus, the power supply socket 45 is inserted into the socket mounting hole 70, and the power supply terminal 36 in the power supply socket 45 is connected to and connected to the power reception terminal 38 of the substrate 41 by this insertion.
In the figure, reference numeral 78 denotes a positioning plate that is inserted into the groove of the substrate 41.

  The power supply socket 45 cannot normally be removed from the socket mounting hole 70 once it is mounted in the socket mounting hole 70. However, by removing the terminal cover 42 from the solenoid valve body 1 and deforming the elastic walls 74 and 76 with a tool such as a screwdriver from the lower surface side to remove the hook portions 71 and 75 from the claw portions 66 and 67, It is possible to extract.

  FIGS. 7 to 9 show a second embodiment of the power supply apparatus. The main feature that the power supply apparatus 4A of the second embodiment differs from the power supply apparatus 4 of the first embodiment is the first embodiment. In the power feeding device 4, claw portions 66 and 67 are formed on the three surfaces of the back surface 64 of the lid body 48 and the left and right side walls 58 of the terminal housing box 47 constituting the housing 46 of the power feeding socket 45, and the socket The three hole walls of the mounting hole 70 are elastic walls 74 and 76 having hook portions 71 and 75, and the claw portions 66 and 67 and the hook portions 71 and 75 are engaged with each other so that the power supply socket 45 is connected. While the socket mounting hole 70 is locked on three surfaces, in the power supply device 4A of the second embodiment, the power supply socket 45 is connected to the back surface of the terminal housing box 47 constituting the housing 46 and the lid body 48. In two sides with the back of the Is that is engaged in Tsu door mounting hole 70.

  That is, on the back surface 64 of the lid body 48, two first claw portions 66 are formed in a side-by-side manner at a position of the lower end portion thereof, and above the first claw portions 66. Two protrusions 65 are formed at each position, and a recess 66 a is formed between the upper and lower protrusions 65 and the first claw 66. Similarly, two third claws 68 are formed on the back surface of the terminal housing box 47 in a side-by-side manner at the lower end of the terminal housing box 47. A protrusion 69 is formed at a position above 68, and a recess 68 a is formed between each third claw 68 and the protrusion 69.

  On the other hand, in the socket mounting hole 70 of the terminal cover 42, two of the four hole walls surrounding the mounting hole, that is, on the back surface 64 side of the lid body 48 of the power supply socket 45, that is, The hole wall located and the hole wall located on the back side of the terminal housing box 47 are a first elastic wall 74 and a third elastic wall 79, respectively, and the first hook portion 71 and the first elastic wall 79 are respectively provided at the lower ends thereof. A three hook portion 80 is provided.

When the power feeding socket 45 is pushed into the socket mounting hole 70, the first hook portion 71 and the third hook portion 80 at the lower ends of the first elastic wall 74 and the third elastic wall 70 are moved to the first claw portion. 66 and the third claw 68 are once elastically pushed and expanded, and then elastically fitted into the recesses 66a and 68a and locked to the lower ends of the first claw 66 and the third claw 68. Accordingly, the power supply socket 45 is attached in the socket mounting hole 70 in a locked state.
The other configurations of the power supply socket 45 and the terminal cover 42 in the second embodiment are substantially the same as those of the power supply socket 45 and the terminal cover 42 of the first embodiment. Parts are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  The power supply socket 45 can be locked on any one surface without being locked to the socket mounting hole 70 on a plurality of surfaces as shown in the above embodiments. That is, any one of the hole walls of the socket mounting hole 70 may be used as an elastic wall to form a hook portion, and a claw portion may be formed on the outer surface of the power supply socket 45 facing the elastic wall.

1 is a longitudinal sectional side view showing a first embodiment of the present invention. It is a perspective view which decomposes | disassembles and shows the socket for electric power feeding. It is a principal part expanded sectional view in the AA line of FIG. It is a principal part expanded sectional view of FIG. It is a perspective view which shows the state which is not yet mounted | worn with the insertion hole of a terminal cover before assembling the socket for electric power feeding. It is a perspective view which shows the state which assembled | attached the socket for electric power feeding and was mounted | worn with the insertion hole of the terminal cover. It is sectional drawing in the same position as FIG. 4 which shows 2nd Embodiment of this invention. It is the perspective view which decomposed | disassembled the power supply socket of 2nd Embodiment, and was seen from the cover body side. It is the perspective view which decomposed | disassembled the power supply socket of 2nd Embodiment, and was seen from the terminal storage box side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solenoid valve main body 2 Flow path switching part 3 Electromagnetic operation part 4, 4A Feeding device 36 Feeding terminal 38 Power receiving terminal 42 Terminal cover 45 Feeding socket 47 Terminal storage box 48 Cover body 49 Feeding line 55a Semicircular groove 57, 60 Flange part 58 Side wall 59 Locking window 62 Side face 63 Projection part 64 Rear face 66, 67, 68 Claw part 70 Socket mounting hole 71, 75, 80 Hook part 74, 76, 79 Elastic wall

Claims (7)

In an electromagnetic valve provided with an electromagnetic valve main body comprising a flow path switching unit and an electromagnetic operation unit for operating the flow path switching unit, and a power supply device for supplying power to the electromagnetic operation unit,
The power feeding device is provided on a side surface of the electromagnetic valve body and is connected to the electromagnetic operation unit, and a power receiving terminal is attached to the side surface of the electromagnetic valve body to cover the power receiving terminal. A socket mounting hole provided at a position corresponding to the power receiving terminal, and a power supply socket attached to the tip of the power supply line and mounted in the socket mounting hole,
The power feeding socket has a rectangular box-shaped terminal housing box whose front surface is open, and a lid that closes the front surface of the terminal housing box, and the terminal housing box and the lid body The power supply socket is integrally assembled by interposing the tip of the power supply line and the power supply terminal between them and connecting the terminal housing box and the lid to each other in this state. Is installed in the socket mounting hole, the power feeding terminal and the power receiving terminal are electrically connected to each other,
At least one of a plurality of hole walls surrounding the socket mounting hole is an elastic wall, a hook portion is formed on the inner surface of the elastic wall, and a claw portion is formed on the surface of the power supply socket facing the elastic wall. Is formed, and the power supply socket is attached in a state in which the power supply socket is prevented from coming off in the socket mounting hole by the elastic engagement between the claw portion and the hook portion.
A solenoid valve characterized by that.   2. A semicircular groove is formed in each of the terminal housing box and the lid at opposite positions of the feeder line introducing portion, and the feeder line is sandwiched between the semicircular grooves. The solenoid valve described.   The electromagnetic valve according to claim 1 or 2, wherein the terminal housing box and the lid are integrally coupled by locking a protrusion formed on one side and a locking window formed on the other side. .   The terminal housing box has left and right side walls that can be elastically deformed and a plurality of the locking windows formed on the side walls, and the lid body is elastically fitted between the left and right side walls. The electromagnetic valve according to claim 3, wherein a plurality of protrusions formed on both side surfaces of the lid body are engaged with the engagement window. Two opposite wall surfaces of the socket mounting hole are the elastic walls, and the claw portions are respectively formed on the back surface of the terminal housing box and the back surface of the lid in the power supply socket. The electromagnetic valve according to any one of claims 1 to 4. The elastic wall extends toward the back of the hole with the end on the hole side of the socket mounting hole as a fulcrum, and elastically deforms in a direction in which the end on the back of the hole contacts and separates from the claw of the power supply socket. The electromagnetic valve according to claim 1 , wherein the electromagnetic valve is formed as described above. A step portion is formed so as to surround the upper end portion of the socket mounting hole, and a flange portion is formed on the outer periphery of the upper end portion of the power supply socket, and the power supply socket is inserted into the socket mounting hole. The solenoid valve according to any one of claims 1 to 6 , wherein these flange portions are configured to abut and engage with the stepped portion .

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