JPS6131262Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a solenoid valve device that operates a valve body by energizing a solenoid and energizing it. Regarding the structure of the connecting part for connecting.

Among this type of solenoid valve device, one in which a stand equipped with a terminal piece for connecting an external electric wire is fitted into a recess in the valve body (for example, see Utility Model Application Publication No. 133824/1983) is When mounting the terminal piece 15 on the base 10, when one end 15a of the terminal piece 15 is inserted through the through hole 11 provided in the base 10, the one end 15a is exposed from the base 10, and the one end 15a is exposed from the base 10.
5a is in a free state with respect to the lifting direction from the stand 10. In this state, the one end 1
When connecting the electric wire 21 to the electric wire 5a or thereafter, if an upward external force is applied to the one end 15a by pulling the electric wire 21, the one end 15a will easily bend upward. There are some problems that arise.

Secondly, after connecting the electric wire 21, simply fitting the valve 10 into the recess of the valve body 5 exposes the conductive portion of the one end 15a, which is dangerous. Therefore, there is the hassle of having to separately cover the recess with a lid.

Thirdly, the valve having the above structure has the problem that a recess must be formed in the valve body in order to secure a space for the stand 10.

Therefore, the present invention has been developed to eliminate the above-mentioned problems. By simply attaching the socket contact to the lid with a simple operation, the socket contact can be held in a firm state (when connecting electric wires). It can be installed in a state that prevents unexpected deformation), and after connecting the wires, the socket contact can be installed in the specified position and its insulation protected by simply placing the lid on the main body. Furthermore, the present invention aims to provide a solenoid valve device which does not require any recesses in the valve body and can simplify the structure of the valve body.

The drawings showing the embodiments of the present application will be described below. In FIG. 1, 1 is a well-known solenoid valve body, 2
3 is a solenoid; 3 is a pin contact; when the solenoid 2 is energized through the pin contact 3, a valve body provided in the valve body 1 is operated. 5 is a terminal box attached to the valve body 1;
It consists of a concave main body 6 fixed to the valve main body 1 with a fixing threaded rod 7, and a lid body 8 detachably attached to the opening of the main body 6 and fixed with a fixing screw 9. 10
Reference numeral 11 indicates a socket contact attached to the lid body 8, and 11 indicates a pin connection body in the socket contact 10. Reference numeral 12 denotes a connection terminal to which an external conductor 13 can be connected. 14 indicates a wire port.

Next, a detailed explanation will be given with reference to FIGS. 2 to 5. First, the socket contact 10 is formed by bending a plate of a material having good elasticity and conductivity (for example, phosphor bronze) into the shape shown. In this socket contact 10, 17 is a base piece, 18 is a through hole, and 20 is an engagement piece formed by cutting and raising a part of the base piece 17. As shown in FIG. 2, the base piece 17 will be described later. It is provided obliquely protruding in a direction opposite to the insertion direction (rightward in FIG. 2). Reference numerals 21 and 22 indicate introduction portions, which are provided so that the pin contact 3 can be inserted in the direction of the arrow A or the direction of the arrow B, respectively. Also, these introductory parts 2
1 and 22 are formed in a shape that is slightly deeper along the directions of arrows A and B, respectively. Next, the connecting terminal 12 is constituted by the base piece 17 of the socket contact 10, a well-known screw rod 23 for tightening, a presser piece 24, a nut 25, etc., respectively.

Next, the main body 6 of the terminal box 5 is formed into a concave shape consisting of a bottom wall 27 and a peripheral wall 28 using a material with good electrical insulation (for example, a synthetic resin material). 29
An insertion hole is formed in a part of the peripheral wall 28, and is a through hole for inserting the pin contact 3 as shown in the figure.

Next, the lid body 8 is formed using the same material as the main body 6. On the inner surface of the lid body 8, reference numeral 31 indicates mounting portions for the socket contacts 10 and connection terminals 12, which are provided at a plurality of locations (four locations in this example). In this attachment part, 32 is a recess for fitting a nut, and is formed in a shape corresponding to (the same as) the external shape of the nut 25 so that the nut 25 can be fitted by J degree. 33 indicates a retention hole formed deeper than the recess 32, and as shown in the figure, its diameter is larger than the diameter of the tip of the threaded rod 23 and smaller than the external dimension (dimension of one side of the square shape) of the nut 25. The hole is formed to have a diameter, and its depth is set to such a size that a gap is created between the tip of the threaded rod and the bottom of the hole when the threaded rod 23 is tightened. Reference numeral 34 indicates a space where the base piece 17 is to be placed, which is provided on the opposite side of the recess 32 (upper side in FIG. 4); In FIG. 3, the upper and lower sides of the space 34 are the side edges 17 of the base piece 17.
Insertion grooves 35, 35 are formed into which a can be inserted. The depth of this insertion groove 35 is the dimension between the groove bottoms 35a, 35a of the opposing grooves 35, 35.
L ₁ is slightly larger than the dimension L ₂ between both side edges 17a, 17a of the base piece 17 (with enough margin to prevent the base piece from wobbling substantially when inserting the base piece, which will be described later). It is formed to a depth that allows the base piece to be inserted smoothly, and is generally a few tenths of a millimeter. Similarly, the groove width L ₃ is also slightly larger than the thickness L ₄ of the side edge 17a of the base piece 17. Reference numeral 36 designates an engaging portion for preventing the base piece 17 from floating up, and is constituted by one groove edge of the groove 35 (on the side opposite to the recessed portion). Reference numeral 37 denotes a partition wall for insulating and partitioning the connection terminals 12 from each other. 4
0 is an engagement recess, which is a space 3 in which the base piece 17 is to be placed.
The engaging piece 20 is formed at a position where it can be engaged as shown in FIG.
Reference numeral 41 denotes a space for inserting a thin rod, which is formed in the shape of a thin groove.
As will be described later, the width of the groove is such that a thin rod 52 (such as a thin screwdriver or awl) can be inserted to disengage the engagement piece 20, but the engagement piece 20
The width of the engagement piece 20 is made smaller than the width of the engagement piece 20 so as to prevent the passage of the engagement piece 20 . Further, the depth is set so that the tip of the thin rod 52 can be passed through the lower side of the engagement piece 20. Reference numeral 42 denotes a surrounding wall that surrounds the pin connector 11, and a space for the pin connector 11 is formed inside the wall. 43,44
indicate openings, respectively, and the contact pins 3
It is formed so that it can be inserted in the directions of arrows A and B. Reference numeral 45 denotes an insertion slit, which is formed on the same plane as the insertion groove 35. 46
is a stop wall formed by a part of the surrounding wall 42, and is provided at a position where one end of the pin connector 11 contacts when the base piece 17 is left in the intended storage space 34. Reference numeral 47 denotes an insertion hole bored in the stop wall 46, and is formed in the same plane as the groove 35 and the slit 45. 48 is a stopping wall,
The base piece 17 is formed at a position where one end of the base piece 17 comes into contact with the base piece 17 when the base piece 17 is left in the planned storage space 34 . Note that 49 and 50 represent packings, and 51 represents a crimp terminal, respectively.

In the case of the above structure, by connecting the external conductor 13 to the power source, the conductor 13 and the crimp terminal 5 can be connected to each other.
1, connection terminal 12, base piece 17, pin connection body 11,
Electric power is supplied to the solenoid 2 through the path of the pin contact 3, and a well-known operation is performed.

Next, a procedure for assembling the socket contact 10 and the connecting terminal 12 to the lid 8 will be explained. First, the third
As shown in part A of the figure, the nut 25 is dropped into the nut fitting recess 32. Next, advance the socket contact 10 in the direction of arrow 53 (insertion direction), insert the base piece 17 into the slit 45 and the insertion hole 47,
Continue pushing in the same direction. Then base piece 1
Both side edges 17a, 17a of 7 are both insertion grooves 35, 3
5 and is guided by the groove 35 and the base piece 17
proceeds to the scheduled storage space 34. Eventually, the front end of the base piece 17 in the insertion direction comes into contact with the stop wall 48, and the front end of the pin connector 11 comes into contact with the stop wall 46, so that the base piece 17 is positioned in a state where it has accurately reached the planned storage space 34. . In addition, in the case of the above-mentioned insertion, the engagement piece 20 is pressed by the surface 54 to a state along the surface of the base piece 17, but when it reaches the above-mentioned state, it faces the engagement recess 40, and due to its own elasticity, the engagement piece 20 faces the engagement recess 40. It returns to the state shown in FIG. 2 and engages with the engagement recess 40, thereby preventing movement of the base piece 17 in the direction opposite to the insertion direction. Therefore, in this state, the socket contact 10 is in a fixed state with substantially no wobbling in all directions, front and back, left and right, and up and down. Thereafter, the threaded rod 23 is passed through the presser piece 24 and inserted into the through hole 18 of the base piece 17, and further screwed into the nut 25. During this screwing operation, the nut 25 is inserted into the recess 3.
2 and is prevented from rotating, so it can be done extremely easily.

The state in which the threaded rod 23 and the nut 25 are tightened as described above (in use, the crimp terminal 51
The same applies when tightening is performed with the nut 25 sandwiched between the base piece 17 and the holding piece 24), the nut 25 comes into close mechanical contact with the base piece 17. In this state, the edge of the base piece 17 is attached to the nut 2 as shown in FIG.
It will be in a state where it only slightly overhangs from 5. Therefore, even if the base piece 17 is formed of a thin plate material with low mechanical strength, the mechanical strength in the above-mentioned state is high, and the above-mentioned attached state is firmly maintained.

In the case of the above-mentioned insertion, in order to position the socket contact 10 at a predetermined position, only one of the stop walls 46 and 48 need be present, and the other may be omitted.

Next, connect socket contact 1 as described above.
0 and the connecting terminal 12 are attached to the lid body 8 to the main body 6.
When the solenoid 2 is already attached to the valve body 1, the pin contact is inserted into the introduction part 2 of the pin connection body 11 through the opening 44.
Go into 2.

Further, when the solenoid 2 is attached to the valve body 1 after the lid body 8 is attached to the main body 6, the pin contact 3 is inserted into the insertion hole 29 and the opening 43.
It enters into the introduction part 21 via. In this case, even if the connecting body 11 is pressed in the direction of the arrow 55, the pressing force is received by the stop wall 46, and damage to the connecting body 11 is prevented.

Next, when removing the socket contact 10 mounted on the lid body 8 as described above from the lid body, the thin rod 52 is inserted from the insertion space 41 under the engagement piece 20 with the threaded rod 23 removed in advance. , and press the engagement piece 20 along the surface of the base piece 17 to disengage the engagement piece 20 from the engagement recess 40 . Then, the socket contact 10 may be pulled out in a direction opposite to the insertion direction 53 while maintaining the disengaged state.

As described above, in the present invention, the socket contact 1 is attached to the mounting portion 31 on the inner surface of the lid body 8.
0, the place where one end of the base piece 17 is to remain is provided with an insertion groove 35 and a stop wall.
By simply inserting the socket contact 10 into the specified position and pressing the front end of the base piece 17 or the pin connection body 11 against the stop wall 48 or 46, the socket contact 10 can be placed in the position and the wobbling at one end can be eliminated. It can be assembled and has the effect of being able to be assembled in an accurate position even with simple work.

Moreover, even if the socket contact 10 is simply inserted as described above, the lid 8 can be removed from the solenoid valve body 1 and the connection terminal 12 at one end of the socket contact 10 on the inner surface of the lid 8 can be inserted. When connecting the external conductor 13, even if the worker roughly pulls one end of the base piece 17 provided with the connection terminal to the left in FIG. 5 or upward, both ends 17a of the one end, 17a has a practical structural effect of not deforming against the tension of the worker while being fitted into the grooves 35, 35.

Moreover, in the case of the present invention, after the external conductor 13 is fixed to the contact 10 on the inner surface of the lid 8 as described above, the opening of the lid 8 is simply placed over the main body 6 on the solenoid valve body side. With a simple operation, it is possible to place the contact 10 in a predetermined position (a position where it can be connected to the pin contact 3), and to connect the exposed part (electrically charged part) of the connection terminal 12 to the terminal box 5 made of electrically insulating material. It also has the excellent practical effect of being able to carry out two tasks at the same time: holding it up and wrapping it safely.

Moreover, in the present invention, the socket contact 10 is provided on the inner surface of the lid 8, and after the external conductor 13 is connected using the opening of the lid 8, the valve body is closed so as to close the opening. Since it is connected to the side, there is no need to form a recess in the valve body to place the socket contact like in conventional products, and there is no need to take precautions such as covering and protecting the electrically charged part of the connection terminal with an insulating material. This also has the effect of simplifying the shape of the valve body and reducing its weight.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway front view of the solenoid valve device, FIG. 2 is an enlarged view of the same, and FIG. 3 is a partially cutaway bottom view of the lid (with the lid removed). −
FIG. 4 is an end view of the section cut along the line, FIG. 5 is a perspective view showing the connection terminal disassembled from the lid, and FIG. 6 is a view showing a conventional example. 1... Solenoid valve body, 2... Solenoid, 3...
Pin contact, 5...Terminal box, 6...Body, 8
... Lid body, 10 ... Socket contact, 12 ...
... Connection terminal, 11 ... Pin connection body, 17 ... Base piece.

Claims (1)

[Scope of utility model registration request] It consists of a solenoid valve body equipped with a solenoid and a terminal box attached to the peripheral wall of the solenoid valve body. It consists of a lid made of an electrically insulating material with an opening on the opposing surface so that it can be detachably attached to the main body, and a socket contact provided on the inner surface of the lid has an external conductor at one end. A plate-shaped base piece provided with a connection terminal for connection, and a pin contact provided at the other end of the base piece and protruding from the solenoid into the body when the lid is attached to the body. In the inner surface of the lid body, in the mounting part of the socket contact, the base piece is placed on both sides of the space where one end of the base piece is to be placed. A pair of insertion grooves are formed in which both side edges of one end can be inserted without rattling, and further, in the mounting part, when the base piece is inserted into the insertion groove, the base piece is inserted into the insertion groove. Alternatively, a solenoid valve device is provided with a stop wall that is brought into contact with the front end of the pin connector in the insertion direction.