JPH0426770Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a solenoid valve in which a terminal block for electrical connection to the solenoid valve is attached to a unit block in which a plurality of solenoid valves are attached and joined together to form a manifold. Regarding equipment.

[Conventional technology]

Conventionally, this type of solenoid valve device, as shown in FIG. A terminal block 4 is installed for electrical connection to the valve 2, and the terminal block 4 is attached to one side 1 of the unit block 1 at the end.
A first connector part 5 having a board 4A that comes into contact with the connector B and having a pin-shaped terminal 5A protruding from the board 4A toward the unit block 1 is inserted into a recess 6 provided on one side 1B of the unit block 1. In addition, a second connector part 7 having a terminal part 7A is provided on the opposite side of the unit block 1 from the substrate 4A.
The terminal portion 7A of the second connector portion 7 has a set screw 8A, a holding fitting 8B, and a connecting fitting 8C, and the lead wire 9 from the pin-shaped terminal 5A of the first connector portion 5 is connected in the connection chamber 4B. It is connected to the metal fitting 8C, and the power supply line (not shown) from the power source is held down by the set screw 8A to the metal fitting 8B and the connecting metal fitting 8C.
I'm trying to connect between them. When the solenoid valve 2 is attached to the upper surface 1A of the unit block 1 via the gasket 1D, the first connector portion 5 inserted into the recess 6 of the unit block 1 is fitted with the connecting connector portion 11 protruding from the lower surface 2A of the solenoid valve 2. By matching, both terminals are connected. Reference numeral 12 denotes a cover for protecting the terminal block 4, which has a U-shape with upper and lower cover pieces 12A and 12B with the tips facing the unit block 1 side, and the terminal block 4 is received between the cover pieces 12A and 12B. The second connector portion 7 is covered so that the second connector portion 7 is not exposed.

[Problems to be solved by the invention] In the above electromagnetic valve device, the cover 12 protects the terminal block 4, and although it does not have perfect waterproofness, it must be able to tolerate some water adhesion. Must be. However, the cover 12 is usually manufactured by bending or welding a plate material, and is not processed with high precision, so that a gap is created between the flange 40A of the board 4A and the tips of the cover pieces 12A and 12B of the cover 12. is inevitable. In addition, the upper plate 4C of the terminal block 4 and the upper cover piece 12 of the cover 11
Since there is also a gap between the upper cover pieces 12A, water droplets attached to the surface near the tip of the upper cover piece 12A
Upper plate 4C and upper cover piece 12 from the gap where the tip fits.
There was a problem in that it flowed through the gap between A and entered the second connector portion 7 side of the cover 12, impairing insulation and causing malfunction.

The present invention solves this problem by providing a solenoid valve device that prevents water from entering the cover through the gap at the tip of the cover for protecting the terminal block, thereby increasing the waterproof effect. It is something.

[Means for solving problems]

Therefore, in the present invention, a manifold is formed by joining a plurality of unit blocks each having a solenoid valve attached to the top surface, and a terminal block for electrical connection to the solenoid valve is arranged on one side of each unit block so as to be aligned with one side of the manifold. It has a U-shaped cover with vertically separated cover pieces that receives and covers the terminal block between the cover pieces, and an end plate that covers both ends of the cover and attaches the cover to both ends of the manifold. The terminal block has a board that comes into contact with one side of the unit block, and has a first connector part that is inserted into the unit block from this board and connects to the solenoid valve, and also has a first connector part that is connected to the solenoid valve on the side opposite to the unit block from the board. The terminal block has a second connector part that connects to the first connector part to connect the power supply line from the power supply side, and an annular groove is formed on the outer surface of the board of the terminal block, and the top and bottom of the cover are inserted into the opening of the groove. I try to position the tip of the cover piece.

[Effect]

In such a configuration of the present invention, water droplets that adhere to the surface of the tip of the cover piece of the cover that protects the terminal block are
Water can flow into the concave groove of the terminal block board through the gap at the tip of the cover piece, flow down the concave groove, and be discharged to the outside through the gap at the tip of the lower cover piece, preventing water from entering the second connector section inside the cover. can be suppressed and the waterproofing effect can be enhanced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Note that the same parts as in the conventional example will be described with the same reference numerals.

Reference numeral 1 denotes a unit block to which a solenoid valve 2 is attached to an upper surface 1A. Three unit blocks 1 are joined and integrated in parallel to form a manifold in which three solenoid valves 2 are attached as a whole. A terminal block 4 for electrical connection to the solenoid valve 2 is mounted on one side 1B of each unit block 1 using a set screw 3 so as to be aligned on one side of the manifold. This terminal block 4 includes a board 4A that abuts one side 1B of the unit block 1, a top board 4C, side boards 4D, 4E, and a side board 4A connected to the board 4A.
It has an intermediate plate 4F connected to D and 4E, and an upper plate 4
C, side plates 4D, 4E and intermediate plate 4F form a connection chamber 4B that opens downward. Reference numeral 5 denotes a first connector portion having a pin-shaped terminal 5A protruding from the substrate 4A of the terminal block 4 toward the unit block 1, and is inserted into a recess 6 formed on one side 1B of the unit block 1. 7 is unit block 1 than board 4A
A second connector part having terminal parts 7A, 7B, 7C provided on the opposite side, each terminal part 7A, 7B, 7C of the second connector part 7 has a set screw 8A and a holding metal fitting 8B.
and a connecting fitting 8C, and a lead wire 9 from the pin-shaped terminal 5A of the first connector portion 5 in the connection chamber 4B.
is connected to the connecting fitting 8C, and is also connected to a power supply line (not shown) from a power source between the presser fitting 8B and the connecting fitting 8C by means of a set screw 8A. When the solenoid valve 2 is attached to the upper surface 1A of the unit block 1 via the gasket 10, the connecting connector portion 11 protruding from the lower surface 2A of the solenoid valve 2 is fitted into the first connector portion 5 inserted into the recess 6 of the unit block 1. By matching, both terminals are connected. Reference numeral 12 denotes a cover for protecting the terminal block 4, which has a U-shape with cover pieces 12A and 12B separated vertically and whose tips are directed toward the unit block 1, and a terminal between these cover pieces 12A and 12B. The base 4 is received and covered so that the second connector part 7 of the terminal base 4 is not exposed. 13 is the mounting side 13A, 13
B, 13C, and an end plate having a lead-out hole 13D for the power supply line so as to be able to close the side opening 14 of the cover 12, and both ends of a manifold formed by joining and integrating three unit blocks 1 in parallel. It is installed on the mounting side 13A, 1
Concave grooves are formed in 3B and 13C. Further, reference numeral 16 denotes a concave groove formed in an annular shape on the outer surface of the substrate 4A of the terminal block 4 at the position where the tips of the cover pieces 12A and 12B of the cover 12 reach, and is formed up to the vicinity of the base end of the flange 40A. The tip of 12B is positioned within the opening. cover 12
For assembly, the side ends of the cover pieces 12A, 12B are joined to the mounting sides 13A, 13B, and with the side openings 14 closed, both end plates 1 are attached with screws 17.
It is attached to 3.

In this configuration, water droplets adhering to the surface near the tip of the upper cover piece 12A of the cover 12 flow into the groove 16 through the gap between the tip of the upper cover piece 12A and the flange 40A, and the groove 16 becomes annular. Therefore, it flows down and is discharged to the outside through the gap at the tip of the lower cover piece 12B. Therefore, the second connector portion 7 can be seen from the gap between the upper cover piece 12A and the upper plate 4C.
This prevents water from entering the sides. This prevention of water intrusion can be achieved through the grooves 16 without providing waterproof packing on the cover pieces 12A, 12B or the board 4A of the terminal block 4.
This can be achieved with a simple configuration.

[Effect of idea]

In this way, in the present invention, a manifold is formed by joining a plurality of unit blocks each having a solenoid valve attached to the top surface, and a terminal for electrical connection to the solenoid valve is provided on one side of each unit block so as to be aligned with one side of the manifold. An end plate to which a base is attached, a cover formed in a U-shape with cover pieces separated above and below, which receives and covers the terminal block between the cover pieces, and which covers both ends of the cover and attaches the cover to both ends of the manifold. The terminal block has a board that comes into contact with one side of the unit block, and has a first connector part that is inserted into the unit block from this board and connects to the solenoid valve, and is located opposite to the unit block from the board. A second connector part is provided on the side to connect the first connector part and a power supply line from the power supply side, and an annular groove is formed on the outer surface of the board of the terminal block, and the top and bottom of the cover are inserted into the opening of the groove. The tip of the cover piece of the cover is positioned so that water droplets adhering to the surface of the cover piece of the cover do not enter the cover through the gap at the tip of the cover piece, but instead flow into the groove formed in an annular shape on the base plate of the terminal block. It can flow down along the concave groove and be naturally discharged to the outside, and is prevented from entering the second connector portion side, thereby increasing the waterproof effect. Moreover, since it can be done without adding a special waterproof gasket, it can be manufactured at a low cost without increasing the number of parts.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention showing an assembled state with the solenoid valve removed, Fig. 2 is a longitudinal cross-sectional view of essential parts showing an embodiment of the invention, and Fig. 3 is a conventional example. It is a longitudinal cross-sectional view of the main part. 1... Unit block, 2... Solenoid valve, 4... Terminal block, 4A... Board, 5... First connector part, 7
...Second connector section, 12...Cover, 16...
Concave groove.

Claims (1)

[Scope of utility model registration request] A manifold is formed by joining multiple unit blocks each with a solenoid valve attached to the top surface, and a terminal block for electrical connection to the solenoid valve is attached to one side of each unit block so that it is aligned with one side of the manifold. It has a cover formed in a U-shape with separated cover pieces and receives and covers the terminal block between the cover pieces, and end plates are provided at both ends of the manifold to cover both ends of the cover and attach the cover, and the terminal block is a unit. It has a board that comes into contact with one side of the block, and a first connector part that is inserted into the unit block from this board and connects to the solenoid valve, and a first connector part on the opposite side of the board from the unit block. A second connector part is provided to connect the power supply line from the power supply side, and an annular groove is formed on the outer surface of the board of the terminal block, and the tips of the upper and lower cover pieces of the cover are positioned within the opening of the groove. A solenoid valve device consisting of