JP2002289422A - Terminal fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal fixing structure that can improve the fixability of terminals without causing any cost rise. SOLUTION: Groove sections 26 which house terminals 27 are formed on the top face of a bobbin 11. In the general section 33 of each terminal 27, a laterally extended anchor 34 is provided. In addition, recessed sections 41 which house the anchor sections 34 of the terminals 27 are formed on the top face 23 of the bobbin 11, and projecting sections 42 are formed on the tops of the side walls of the recessed sections 41. The recessed sections 41 and terminals 27 form packing spaces 52 and an adhesive is packed in the spaces 52 and cured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fixing structure for fixing, for example, a terminal extending from a coil of a solenoid valve.

[0002]

2. Description of the Related Art Conventionally, a solenoid valve has a solenoid 101 as shown in FIG. 3, and a terminal 104 is provided on a top surface 103 of a bobbin 102 of the solenoid 101.

The terminal 104 is disposed so as to be fitted inside a groove 111 formed in the top surface 103.
A connection portion 112 is formed at one end, and a fusing portion 113 is formed at the other end. The connection portion 112 protrudes from the bobbin 102, and is configured so that a power connector can be inserted. Further, the fusing unit 1
13 is a winding 11 of a coil wound around the bobbin 102.
Four ends are locked so that power can be supplied from the power connector to the coil.

[0006] As shown in FIG. 3B, the top surface 103 is formed by resin molding 121 in a later step, and is connected to the fusing portion 113 by a force applied to the terminal portion 112 when the power connector is connected. The line 114 is configured so as not to be disconnected.

FIG. 4 is a view showing another conventional example. A terminal 204 disposed on a top surface 203 of a bobbin 202 of a solenoid 201 is connected to the top surface 2 of the solenoid 201 as shown in FIG.
It is configured so as to be pressed down while being covered with a resin cap 205 fitted to the cover 03.

Thus, similarly to the above, when the power supply connector is connected, the winding connected to the fusing portion 212 is not broken by the force applied to the connection portion 211 of the terminal 204.

[0007]

However, in the former mold-type terminal fixing structure, the solenoid 10
There is a problem that a mold is required for each type, and molding costs are high.

Further, in the latter cap-holding type solenoid 201, there is a concern that the fixing force is weaker than that of the former, and the force at the time of connecting / disconnecting the connector is easily transmitted to the fusing portion 212.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and has as its object to provide a terminal fixing structure capable of improving the fixing property of a terminal without increasing costs. It is.

[0010]

According to a first aspect of the present invention, there is provided a terminal fixing structure according to the present invention, wherein a terminal having a connecting portion to which a connector is connected is provided in a groove in a bobbin top surface. In the terminal fixing structure arranged in the terminal,
A tongue extending laterally along the bottom of the groove was provided, and an adhesive was injected from the upper part of the tongue into the groove where the tongue was accommodated, and was cured.

That is, the tongue piece formed on the terminal is arranged along the bottom surface of the groove while being housed in the groove on the top surface of the bobbin. Then, an adhesive is injected into the groove where the tongue piece is accommodated, so that the terminal is fixed in the groove by the adhesive closely attached to the tongue piece. At this time, since the cured adhesive is arranged on the tongue piece, it functions as a structure for preventing the terminal from coming off from the groove.

In the terminal fixing structure of the present invention, a recess for accommodating the tongue piece is formed integrally with a side portion of the groove, and a filling space in which the adhesive is filled in the recess. In addition, a protrusion protruding inward was formed on the side wall of the recess.

That is, the tongue piece is housed in a concave portion formed on the side of the groove. Further, since the space for filling the adhesive is formed by the recess, the outflow of the adhesive along the groove is prevented. And since the protrusion part which protrudes inward is formed in the side wall of this recessed part, the movement of the adhesive after hardening in the removal direction is prevented.

Further, in the terminal fixing structure according to the third aspect, an opening communicating with the concave portion through the groove is provided in an upper portion of the bobbin, and the terminal accommodated in the groove has the opening. And the recessed portion to separate the filling space.

That is, an opening communicating with the recess through a groove is formed in the upper part of the bobbin.
The use of the opening as a core punching hole facilitates the formation of the protruding portion inside the recess.
In addition, since the opening is partitioned from the recess in a state in which the terminal is accommodated in the groove, careless leakage of the adhesive filled in the recess is prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a solenoid 1 having a terminal fixing structure according to the present embodiment, and the solenoid 1 is housed in an electromagnetic valve to operate a valve element.

The solenoid 1 includes a bobbin 11 made of resin.
And a coil 1 formed by winding a winding 12 around the bobbin 11.
3 so as to generate a magnetic force when the coil 13 is energized.

As shown in FIG. 2, the bobbin 11 comprises a cylindrical body 21 and flanges 22 provided at the ends of the body 21. Winding 12
Is wound to form the coil 13. FIG. 1 shows a top surface 23 of a flange portion 22 provided at the upper part.
As shown in FIG. 2, a folded portion 25 that folds the winding 12 extending from the cutout portion 24 is provided at a symmetrical position. As shown in FIG. 2, the top surface 23 is provided with a pair of grooves 26, 26 at target positions.
Is configured to accommodate a metal terminal 27.

At one end of the terminal 27, a fusing portion 31 is formed by folding the end portion. The fusing portion 31 is configured such that the winding 12 is electrically welded. I have. The other end of the terminal 27 is
It is formed in a flat plate shape, and forms a connection portion 32 to which a power connector (not shown) is connected so as to be able to be freely inserted and removed. The general portion 33 of the terminal 27 is formed in an upright thin plate shape, and an anchor portion 34 as a tongue piece extending laterally is provided at the lower edge of the central portion of the general portion 33. ing. The anchor portion 34 is bent at a portion extending from the general portion 33, and extends toward the center of the bobbin 11 in the attached state. Thereby, the exposure of the anchor portion 34 to the side of the bobbin 11 is prevented.

On the top surface 23 of the bobbin 11, a recess 41 for accommodating the anchor portion 34 in a state where the terminal 27 is accommodated in the groove 26 is formed on a side portion of the groove 26. The recess 41 communicates integrally with the groove 26 and is formed on the center side of the bobbin 11 with respect to the groove 26. As shown in FIG. 2B, inwardly protruding portions 42, 42 are formed at two opposing locations on the upper side wall of the concave portion 41, and the width dimension W1 of the two protruding portions 42, 42 is formed. Is set wider than the width dimension W2 of the anchor portion 34, and insertion from above the anchor portion 34 is allowed.

A flange 2 forming the upper part of the bobbin 11
2, as shown in FIG. 2B, an opening 51 communicating with the recess 41 through the groove 26 is formed, and the opening 51 is formed in the recess 41 and the inside of the recess 41. The cores form punched holes that form the protruding portions 42, 42 protruding from the core. On the bobbin 11 center side from the opening 51, the groove 26 and the recess 41 are arranged in order. With the terminal 27 accommodated in the groove 26, the opening 51 and the recess 41 are separated from each other. It is configured so that it can be partitioned. In this state, the concave portion 41 has a container shape, and the general portion 33 of the terminal 27 separates the filling space 52 for filling the adhesive onto the anchor portion 34 housed in the concave portion 41. It constitutes the wall that forms.

In this embodiment having the above-described configuration, when attaching the terminal 27 to the solenoid 1, the terminal 27 is inserted into the groove 26 of the top surface 23 of the bobbin 11. Then, the recess 41 opened to the side of the bobbin 11 through the groove 26 and the opening 51 is separated from the opening 51 by the terminal 27 in the groove 26, and the recess 4 is formed.
Inside 1 is formed a filling space 52 having an upper opening shape surrounded by the wall surface of the concave portion 41 and the terminal 27.

The filling space 52 is filled with an adhesive. At this time, since the terminal 27 functions as a wall for preventing an opening to the side, it is possible to prevent inadvertent leakage of the filled adhesive. Thereby, the stain on the side portion can be prevented beforehand, and the appearance quality can be improved.

The concave portion 4 forming the filling space 52
An anchor portion 34 of the terminal 27 is accommodated in 1, and the terminal 27 can be fixed in the concave portion 41 by an adhesive closely contacting the anchor portion 34.
At this time, since the adhesive is hardened on the anchor portion 34, it can function as the fixing portion 61 for preventing the terminal 27 from coming out of the concave portion 41.

Therefore, the fixing force can be increased as compared with the related art in which a cap is provided on the groove portion 26 and the terminal 27 is pressed, and an adverse effect at the time of connector connection can be eliminated. Further, as compared with the case where the top surface 23 of the bobbin 11 is resin-molded, a different mold for each bobbin 11 is not required, and the molding cost can be reduced.

Further, since the concave portion 41 is formed inside the groove portion 26 to form the space 52 for filling the adhesive, the groove portion 26 is formed.
Can be prevented from flowing out along the line. Further, the side wall of the concave portion 41 has a protruding portion 4 protruding inward.
Since the second and second members 42 are formed, it is possible to prevent the fixing portion 61 formed by curing the adhesive from coming off upward.
Thus, it is possible to reliably prevent the terminal 27 from being accidentally removed from the groove 26.

On the other hand, on the upper part of the bobbin 11, a groove 26 is provided.
The opening 51 communicating with the concave portion 41 is formed through the opening 51, so that the opening 51 can be used as a core punching hole. Therefore, the protruding portions 42, 42 protruding inward of the concave portion 41 can be easily formed.

[0028]

As described above, in the terminal fixing structure according to the first aspect of the present invention, the adhesive is injected into the groove portion in which the tongue piece of the terminal is accommodated, and the terminal is cured. Can be fixed in the groove by the adhesive. In addition, since this adhesive is cured on the tongue piece, it functions as a structure for preventing the terminal from coming off from the groove.

Therefore, the fixing force can be increased as compared with the related art in which the cap is provided on the groove and the terminal is pressed, and the adverse effect at the time of connecting the connector can be eliminated. Further, as compared with the case where the top surface of the bobbin is resin-molded, a molding die is not required, and the molding cost can be reduced.

Further, in the terminal fixing structure according to the second aspect, since the space filled with the adhesive is formed by the recess accommodating the tongue piece, it is possible to prevent the adhesive from flowing out along the groove. And since the protrusion part which protrudes inward is formed in the side wall of this recessed part, the movement of the adhesive after hardening in the removal direction can be prevented. Thus, it is possible to reliably prevent the terminal from being accidentally pulled out of the groove.

Further, in the terminal fixing structure according to the third aspect, by using the opening formed in the upper part of the bobbin as a punching hole for the core, the projecting part inwardly into the recess can be easily formed. can do. Further, since the opening is partitioned from the recess in a state in which the terminal is housed in the groove, it is possible to prevent the adhesive filled in the recess from being inadvertently leaked, and to improve the appearance quality. Can be enhanced.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, wherein (a) is a plan view and (b) is a side view.

FIG. 2 is an exploded view of the solenoid of the embodiment, and FIG.
Is a plan view, and (b) is a side view.

3A and 3B are views showing a conventional solenoid, wherein FIG. 3A is a plan view before molding and FIG. 3B is a plan view after molding.

FIG. 4 is a view showing another conventional example, in which (a) is a plan view before molding and (b) is a plan view after molding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solenoid 11 Bobbin 12 Winding 23 Top surface 26 Groove part 27 Terminal 32 Connection part 34 Anchor part (tongue piece) 41 Depression 42 Projection part 51 Opening 52 Filling space 61 Fixed part

Claims (3)

[Claims] 1. A terminal fixing structure in which a terminal having a connection portion to which a connector is connected is disposed in a groove on a bobbin top surface, wherein the terminal extends laterally along a bottom surface of the groove. A terminal fixing structure, wherein an adhesive is injected from the upper portion of the tongue into the groove where the tongue is accommodated, and the adhesive is cured. 2. A recess for accommodating the tongue piece is formed integrally with a side of the groove, and a filling space for filling the adhesive is formed in the recess, and a side wall of the recess is formed on a side wall of the recess. The terminal fixing structure according to claim 1, wherein a projecting portion projecting inward is formed. 3. An upper portion of the bobbin is provided with an opening communicating with the recess through the groove, and the terminal accommodated in the groove partitions the opening and the recess. 3. The terminal fixing structure according to claim 2, wherein the filling space is separated.