JPS623909Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wiring connection device for a solenoid valve.

[Prior art] In recent years, the automation of production equipment has progressed rapidly and a large number of solenoid valves are being used. Therefore, it is important to simplify the installation of new solenoid valves and the subsequent maintenance and management from the perspective of cost savings. is important.

For the above-mentioned simplification, it is effective to make the connection of the power supply line to the solenoid valve simple and reliable. It is common to connect a connector with an insertion hole into which an electrical connection is made by inserting the protruding terminal into the terminal, and a connector with such a configuration requires a large number of parts. In addition, there are disadvantages such as the connection being unstable and easily coming off, and the external force acting on the wiring or connector acting directly on the protruding terminal of the solenoid valve and easily damaging it. It was not possible to connect stably and reliably. In addition, particularly during the connection work, it is necessary to accurately align the insertion hole with the protruding terminal when installing the terminal, which poses a problem in that the workability is not satisfactory.

[Problems to be solved by the invention] In view of the above, the present invention has developed a solenoid valve that allows the power supply line to be attached and detached from the solenoid valve with a single touch without fumbling, and also maintains a secure attachment state with a simple configuration. The present invention aims to provide a wiring connection device.

[Means for solving the problem] In order to achieve the above object, the wiring connection device for a solenoid valve of the present invention is provided by attaching the excitation coil of the solenoid valve to the side of a solenoid formed by molding it with an insulating resin. ,
A rectangular trapezoidal mounting base having an engaging surface for preventing rotation on the circumferential surface formed integrally therewith, and an engaging portion located above the mounting base are provided, and the upper half of the mounting base is provided with The terminal box has an electrically connected protruding terminal protruding thereon, and a terminal box is fitted with a tubular terminal that is fitted into the protruding terminal to provide electrical conduction, and is engaged with a detent engagement surface on the circumferential surface of the rectangular trapezoidal mounting base. The structure includes a clamping plate that elastically engages with the upper engagement portion of the abutment plate and the mount, and clamps the mount between the abutment plate and the mount.

[Function] Press the lower abutment plate of the terminal box against the lower anti-rotation engagement surface of the rectangular trapezoidal mounting base integrally formed on the side of the solenoid. When the terminal box is attached to the mounting base so as to cover the mounting base, the tubular terminal inside the terminal box will naturally fit into the protruding terminal on the solenoid mounting base, and the clamping plate will fit into the engagement part. When engaged, the terminal box is attached and power can be supplied to the excitation coil.

In this case, the anti-rotation engagement surface on the bottom of the mounting base serves as a guide when pressing the lower contact plate of the terminal box, so the terminal box can be installed not only with one touch, but also with just one touch. The engagement between the plate and the engagement surface and the engagement between the clamping plate and the engagement portion prevent rattling and relative rotation between the two. Also,
By stably attaching the terminal box to the mounting base,
It is possible to prevent excessive force from being applied to a pair of terminals that are fitted together and in a conductive state.

[Effects of the invention] According to the wiring connection device of the invention, the following effects can be achieved.

(a) The mounting base for mounting the terminal box of the solenoid of the solenoid valve is integrally formed with the molded part of the insulating resin necessary for insulating the coil, so the molded part can be used both for insulation and for mounting the terminal box. By having the same function, not only is there no need to attach the mounting base to the solenoid, but the number of parts constituting the device can be reduced.

(b) Press the contact plate at the bottom of the terminal box against the lower anti-rotation engagement surface of the rectangular trapezoidal mounting base provided on the side of the solenoid, and in this state rotate the terminal board upward. Then, by engaging the upper clamping plate with the upper part of the mounting base, the terminal box will be attached to the mounting base, and the tubular terminal in the terminal box will naturally fit into the protruding terminal on the solenoid mounting base. can be done. In this case, since the anti-rotation engagement surface on the bottom of the mounting base is on the guide that presses against the lower abutment plate of the terminal box, the installation of the terminal box is as follows:
You can do it with just one touch, even if you are fumbling around.

(c) When the terminal box is attached to the molded part of the solenoid, the mounting base in the molded part is sandwiched between the contact plate of the terminal box and the clamping plate, and the engagement between the clamping plate and the engaging part is Since the terminal box is fixed to the solenoid depending on the case, the terminal box can be stably attached to the solenoid without wobbling and is prevented from rotating. Therefore, the solenoid and the terminal box are fitted to each other and are in a conductive state. By preventing excessive force from being applied to the pair of terminals, it is possible to maintain a good electrical connection between the two over a long period of time.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In Figs. 1 and 2, 1 is a solenoid valve, 2 is a terminal box for connection, and By removably attaching the box 2, it is configured such that power can be supplied to the solenoid valve 1 from a power source (not shown).

The electromagnetic valve 1 includes a solenoid 3 and a valve body 4 through which a fluid flow path is opened and closed. The solenoid 3 is connected to the center hole 6 of the bobbin 6.
The fixed iron core 7 is fitted and fixed to the a, and the movable iron core 9 biased by the return spring 8 is fitted so as to be slidable in the axial direction, and the outside of the excitation coil 11 wound around the bobbin 6 is magnetically The magnetic frame 12 is surrounded by a coil 11 and a protruding terminal 1 connected thereto.
3 and integrally molded with insulating resin 14. The insulating resin 14 is integrally provided with a relatively flat rectangular trapezoidal mounting base 17, and the protruding terminal is made to protrude from the upper half of the surface of the mounting base. Groove 17b on side surface 17a
is recessed, and the lower side surface 17c and the left and right side surfaces 17
A part of the periphery such as d is used as an engagement surface that prevents the terminal box 2 from rotating.

Although the valve body 4 is exemplified as a two-way valve in which the valve seat 4a is opened and closed by a valve portion 9a provided on the movable iron core 9, it may have any other valve structure. Of course.

The terminal box 2 attached to the mounting base 17 swings in a seesaw plate shape due to elastic restoring force using a box body 18 having an opening 18a for accommodating the mounting base 17 and a support 19 protruding from the top surface of the box body 18 as a fulcrum. A clamping plate 21 is integrally molded with an elastic insulating resin, and a tubular terminal 23 having a power supply line 22 crimped thereon is removably inserted into a hole 18b formed in an opening 18a of the box body 18. It is constructed by wearing the The tubular terminal 23 is the protruding terminal 13
Since the protruding terminals 13 are fitted together to establish electrical continuity, they are arranged in such a positional relationship that the projecting terminals 13 are fitted into them. The box body 18 has a contact portion 18c that contacts the front end surface of the mounting base 17, a contact portion 18c that is slightly longer than the contact portion 18c that is in close contact with at least the lower surface 17c of the mounting base 17, and left and right side surfaces 17d as necessary. and a contact plate 18d that comes into close contact with the contact portion 18.
The clamping plate 21 provided on the top c is constructed by providing a driven part 21b having a claw 21a formed at its tip, and a driving part 21c for displacing the driven part 21b against elastic restoring force. Reference numerals 23a and 23b in the figure are retaining portions formed by caulking the outer surface of the tubular terminal 23, which prevent the tubular terminal 23 from being accidentally pulled out from the hole 18b of the box body 18.

In order to attach the terminal box 2 to the electromagnetic valve 1 having the above configuration, a detent engagement surface is formed on the lower surface 17c of the rectangular trapezoidal mounting base 17 integrally formed with the insulating resin 14 on the side surface of the solenoid 3. Then, press the lower abutment plate 18d of the terminal box 2, and in this state cover the rectangular base-shaped mounting base 17 with the box body 18 of the terminal box 2, and attach the terminal box to the mounting base. , the tubular terminal 23 in the terminal box 2 naturally fits into the protruding terminal 13 on the mounting base 17 of the solenoid 3, and the clamping plate 21 engages with the engaging part, so that the terminal box 2 is attached and excited. power can be supplied to the coil for use.

In this case, since the locking engagement surface on the lower surface of the mounting base 17 serves as a guide when pressing the lower abutment plate 18d of the terminal box 2, the terminal box 2 can be mounted with one touch even if it is by groping.

When the clamping plate 21 is to be engaged with the engaging part, the driving part 21c of the clamping plate 21 is pushed down as necessary,
Alternatively, lift the claw 21a of the driven part 21b, and in that state insert the protruding terminal 13 of the solenoid valve 1 into the tubular terminal 23 of the terminal box 2, and
A mounting base 17 for the solenoid valve 1 is accommodated in the interior of the solenoid valve 8a. In this state, the clamping plate 21 returns due to elastic restoring force, the claw 21a engages with the groove 17b of the mounting base 17 constituting the engaging part, and the upper and lower parts of the mounting base 17 are connected to the clamping plate 21. and the abutment plate 18d, and the terminal box 2 is fixed to the solenoid valve 1 in a non-rotating state.

When the terminal box 2 is attached to the solenoid valve 1 in this way, the engagement between the abutment plate 18d and the engagement surface on the bottom surface of the mounting base and the engagement between the clamping plate 21 and the engagement portion causes the two to be separated. Wagging and relative rotation are prevented. Furthermore, by stably attaching the terminal box 2 to the mounting base 17, it is possible to prevent excessive force from being applied to the pair of terminals that are fitted together and electrically connected.

In addition, in order to remove the terminal box 2 from the solenoid valve 1, push down the drive part 21c of the clamping plate 21 and press down the claw 21a of the clamping plate 21.
The pair of terminals 13 and 23 may be separated by separating the terminal box 2 upward from the groove 17b of the mounting base 17 and pulling the terminal box 2.

In the above embodiment, the power supply line 22 is crimped and connected to the tubular terminal 23, and the tubular terminal 23 is connected to the terminal box 2.
Since it is made removable, the length, shape, color, etc. of the power supply line 22 connected to the terminal box 2, that is, the solenoid valve 1, can be freely selected from a wide range of options.

3 and 4 show different structural examples of the clamping plate, and the clamping plate 26 in FIG. The clamping plate 27 shown in FIG. 4 is configured to vertically displace the claw 27b by means of a vertical driving portion 27a.

5 and 6 show different connection means between the solenoid and the terminal box, and FIG.
A claw 28 forming an engaging portion on the upper surface of the solenoid 28
a, and a clamping plate 29b provided with a groove 29a on the upper surface of the terminal box 29 that engages with the claw 28a.
Fig. 6 shows a case where a solenoid 31 is provided.
A case is shown in which a claw 32a constituting an engaging portion is provided protrudingly on the upper surface of the mounting base 32, and a clamping plate 34 is formed on the upper surface of the terminal box 33 with a groove 34a that engages with the claw 32a. It shows.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of the separated state, FIGS. 3 and 4 are partial perspective views of different structural examples of the clamping plate, and FIG.
6 are perspective views of different connection means between the solenoid and the terminal box. 1...Solenoid valve, 2...Terminal box, 3...Solenoid, 11...Coil, 13...Protruding terminal, 17...
...Mounting base, 17b...Groove, 18d...Abutting plate, 2
1... Clamping plate, 21a... Claw, 22... Power supply line,
23...Tubular terminal.

Claims (1)

[Scope of utility model registration request] A rectangular trapezoidal mounting base having an engaging surface for preventing rotation on the circumferential surface integrally formed on the side surface of a solenoid made by molding the excitation coil of a solenoid valve with insulating resin, and an upper part of the mounting base. The terminal box is provided with an engaging portion located at the mounting base, a protruding terminal electrically connected to the coil protrudes from the upper half of the mounting base, and a tubular terminal that is fitted into the protruding terminal for conduction is attached to the terminal box. , an abutment plate that engages with the rotation-preventing engagement surface on the circumferential surface of the rectangular trapezoidal mount, and a contact plate that elastically engages with the upper engagement portion of the mount and is mounted between the abutment plate and A wiring connection device for a solenoid valve, characterized in that a clamping plate for clamping a base is provided.