JP2019201039A - Electromagnetic coil unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily assemble a terminal member 2 connected to the electromagnetic coil portion 1 in an electromagnetic coil unit in which the electromagnetic coil portion 1 is sealed with a mold resin portion 3 and to make the terminal member 2 difficult to deform. SOLUTION: A terminal member 2 is composed of an internal terminal portion 21 and an external terminal portion 22. The external terminal portion 22 is formed by bending so as to be coupled within the range of the longitudinal edge of the internal terminal portion 21. The internal terminal portion 21 is pressed against the end portion 21A on the side of the claw portion 23 to press-fit the internal terminal portion 21 into the fitting hole 11c of the bobbin 11. The conducting wire 12a of the coil 12 is wound around the internal terminal portion 21 so as to overlap the steps of the uneven portions 2A1 and 2A2. The conductor 12a is connected to the internal terminal portion 21 by fusing at the claw portion 23. [Selection diagram] Figure 1

Description

  The present invention relates to an electromagnetic coil unit including an electromagnetic coil unit in which a conducting wire (winding wire) is wound around a bobbin.

  Conventionally, this type of electromagnetic coil unit is disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-55513 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2014-229805 (Patent Document 2). These electromagnetic coil units constitute an electromagnetic drive unit of the electromagnetic valve, and are formed by sealing an electromagnetic coil having a conducting wire wound around a bobbin with a mold cover. Moreover, the terminal connected to the conducting wire is arranged in the connector portion to enable connection with the outside.

JP 2000-55513 A JP 2014-229805 A

  In the electromagnetic coil unit disclosed in Patent Document 1, when the molded coil in which the electromagnetic coil is sealed with resin is at a temperature below freezing point or the like, the surface of the molded coil or the condensation of the lead wire lead-out portion occurs. It pulls out to a position away from the coil part. For this reason, a connection part is extended in a sealing material, the conducting wire from an electromagnetic coil part is arrange | positioned in this connecting part, and the terminal which comprises the connector which connects with the exterior is connected to this conducting wire. Thus, a technique for simply assembling a terminal member for connecting the conductive wire of the electromagnetic coil portion to the outside is required. Patent Document 2 discloses a belt-shaped terminal that is bent. However, the bending of the belt-shaped terminal as described above has a problem that it is easily deformed by repeated fitting to the connector.

  In the electromagnetic coil unit in which the electromagnetic coil portion is sealed with the mold resin portion, the terminal member of the connector connected to the electromagnetic coil portion is improved, and the terminal member is easily assembled and the terminal member is deformed. It is an object of the present invention to provide a difficult electromagnetic coil unit.

  In the electromagnetic coil unit according to claim 1, an electromagnetic coil portion formed by winding a conducting wire around a bobbin and a part of a terminal member made of a conductive plate connected to the conducting wire of the electromagnetic coil portion are sealed with a mold resin portion. The electromagnetic coil unit is stopped, and the terminal member is formed by integrating an internal terminal portion fixed to the bobbin and connected to the conducting wire and an external terminal portion disposed in the connector portion of the mold resin portion. The internal terminal portion and the external terminal portion are each formed into a long plate shape having a longitudinal direction and a short direction, and an end portion in the longitudinal direction of the external terminal portion has its short direction. It is characterized in that the inner terminal portion is coupled in parallel with the longitudinal direction of the internal terminal portion within the range of the longitudinal edge of the internal terminal portion.

  The electromagnetic coil unit according to claim 2 is the electromagnetic coil unit according to claim 1, wherein the internal terminal portion is press-fitted in a longitudinal direction into the fitting hole of the bobbin and fixed to the bobbin. It is characterized by.

  The electromagnetic coil unit according to claim 3 is the electromagnetic coil unit according to claim 1 or 2, wherein the internal terminal portion is flat and the end of the bobbin is fitted to the end opposite to the fixed end with respect to the bobbin. It has a flat end face perpendicular to the depth direction of the joint hole.

  An electromagnetic coil unit according to a fourth aspect is the electromagnetic coil unit according to any one of the first to third aspects, wherein the internal terminal portion has an internal portion at an end opposite to the fixed end with respect to the bobbin. A bent raised portion that forms an angle with the long plate-like plate surface of the terminal portion; an end surface of the internal terminal portion opposite to the fixed end; and an end surface of the bent raised portion opposite to the fixed end Are flat end faces located in the same plane. The “same plane” is a concept including a case where the planes are substantially in the same plane, or a case where the planes are substantially flush.

  The electromagnetic coil unit according to claim 5 is the electromagnetic coil unit according to any one of claims 1 to 4, wherein the conductive wire has an end portion opposite to a fixed end of the internal terminal portion with respect to the bobbin. And is electrically connected to the internal terminal portion.

  The electromagnetic coil unit according to claim 6 is the electromagnetic coil unit according to claim 5, wherein the conductive wire is wound around an edge in the longitudinal direction of the internal terminal portion to form an uneven portion that prevents the conductive wire from being displaced. It is characterized by being.

  The electromagnetic coil unit according to claim 7 is the electromagnetic coil unit according to any one of claims 1 to 6, wherein the external terminal portion is arranged in parallel with an axis of the electromagnetic coil portion. And

  According to the electromagnetic coil unit of claims 1 to 7, since the external terminal portion arranged in the connector portion is coupled within the range of the longitudinal edge of the internal terminal portion, the fixed end of the internal terminal portion with respect to the bobbin Since the opposite end becomes an end having a width in the short side direction, for example, the end can be easily assembled by pressing the end and press-fitting the internal terminal portion into the bobbin. Also, since the short side direction of the external terminal part is the longitudinal direction of the internal terminal part, the longitudinal direction of the external terminal part and the internal terminal part is substantially perpendicular, and the external terminal part connected to the connector is longitudinally Even if stress is applied, since the stress is dispersed in the longitudinal direction of the internal terminal portion, the action of the stress on the internal terminal portion can be reduced and deformation is difficult.

  According to the electromagnetic coil unit of the fourth aspect, since the cross-sectional secondary moment of the end portion opposite to the fixed end of the internal terminal portion with respect to the bobbin increases, the internal terminal portion can be easily press-fitted into the bobbin.

  According to the electromagnetic coil unit of the sixth aspect, since the conductive wire wound around the internal terminal portion is prevented from being displaced by the uneven portion formed on the longitudinal edge of the internal terminal portion, resin molding by the mold resin portion is possible. It becomes easy.

It is a fragmentary sectional view in the side of an electromagnetic coil unit of an embodiment of the present invention. It is a 3rd page figure of the terminal member in the electromagnetic coil unit of embodiment. It is a top view which shows the state which attached the terminal member to the bobbin in the electromagnetic coil unit of embodiment. It is a sectional side view which shows the state which attached the terminal member to the bobbin in the electromagnetic coil unit of embodiment. It is a front view which shows the state which attached the terminal member to the bobbin in the electromagnetic coil unit of embodiment. It is a top view which shows the state which wound and connected the conducting wire to the bobbin and the terminal member in the electromagnetic coil unit of embodiment. It is a sectional side view which shows the state which wound and connected the conducting wire to the bobbin and the terminal member in the electromagnetic coil unit of embodiment. It is a side view which shows the state which wound and connected the conducting wire to the bobbin and the terminal member in the electromagnetic coil unit of embodiment.

  Next, an embodiment of the electromagnetic coil unit of the present invention will be described with reference to the drawings. 1 is a partial cross-sectional view of a side surface of an electromagnetic coil unit of the embodiment, FIG. 2 is a three-side view of a terminal member in the electromagnetic coil unit of the embodiment, and FIG. 3 is a terminal member attached to a bobbin in the electromagnetic coil unit of the embodiment. FIG. 4 is a side sectional view showing a state in which the terminal member is attached to the bobbin in the electromagnetic coil unit of the embodiment, and FIG. 5 shows a state in which the terminal member is attached to the bobbin in the electromagnetic coil unit of the embodiment. FIG. 6 is a plan view showing a state in which the conducting wire is wound and connected to the bobbin and the terminal member in the electromagnetic coil unit of the embodiment, and FIG. 7 is a drawing of the conducting wire to the bobbin and the terminal member in the electromagnetic coil unit of the embodiment. FIG. 8 is a side sectional view showing the connected state, and FIG. 8 is a diagram showing the conductor coil wound around the bobbin and the terminal member in the electromagnetic coil unit of the embodiment. Is a side view showing the connection state.

  The electromagnetic coil unit of this embodiment includes an electromagnetic coil portion 1, a pair of terminal members 2 and 2, and a mold resin portion 3. The electromagnetic coil unit 1 includes a resin bobbin 11 and a coil 12 around which a bobbin 11 is enamel-coated. The bobbin 11 includes a cylindrical tube portion 11a and flange portions 11b and 11b formed at both ends of the tube portion 11, and the coil 12 is obtained by winding a conductive wire around the tube portion 11a between the flange portions 11b and 11b. It is. The terminal member 2 is fixed to the flange portion 11 b on one side of the bobbin 11 by press-fitting, and the electromagnetic coil portion 1 and a part of the terminal member 2 are sealed with the mold resin portion 3. Further, the mold resin part 3 has a cylindrical connector part 31 extending parallel to the axis of the electromagnetic coil part 1 (the central axis of the cylinder part).

  As shown in FIG. 2, the terminal member 2 is formed by pressing and bending a sheet metal material, and includes an internal terminal portion 21 fixed to the bobbin 11 and an external portion bent at the edge of the internal terminal portion 21. The terminal portion 22 and a fusing claw portion 23 as a “bending portion” bent at the end portion of the internal terminal portion 21 are provided. The internal terminal portion 21 and the external terminal portion 22 each have a long plate shape having a longitudinal direction and a short direction.

  The external terminal portion 22 is bent with respect to the internal terminal portion 21 at an end 22A in the longitudinal direction. That is, the external terminal portion 22 is coupled to the internal terminal portion 21 at the end portion 22 </ b> A, and the short side direction (the width direction of the end portion 22 </ b> A) of the external terminal portion 22 is parallel to the longitudinal direction of the internal terminal portion 21. Further, the end portion 22 </ b> A of the outer terminal portion 22 is within the range of the edge in the longitudinal direction of the inner terminal portion 21.

  As shown in FIGS. 3 and 4, the terminal member 2 is press-fitted into the fitting hole 11 c formed in the flange portion 11 b of the bobbin 11 at the end opposite to the claw portion 23 of the internal terminal portion 21. ing. That is, the internal terminal portion 21 is press-fitted in the longitudinal direction into the fitting hole 11 c and fixed to the bobbin 11. Thereby, at the time of shaping | molding sealed with the mold resin part 3, it is suppressed that the relative position of a pair of terminal members 2 and 2 shifts | deviates by the pressure of molten resin. Further, as shown in FIG. 2, the end 21 </ b> A on the claw 23 side of the internal terminal portion 21 is a flat end surface 21 </ b> P having a width in the short direction, and a claw as a “bend raising portion”. The portion 23 forms an angle with the plate surface of the end portion 21A. And the end surface 23P of the nail | claw part 23 is also located in parallel with the end surface 21P of the internal terminal part 21, and said end surface 21P and said end surface 23P are substantially flush | planar. Therefore, by pressing these end surfaces 21P and 23P, a pressing force acts in the longitudinal direction of the internal terminal portion 21, and the internal terminal portion 21 can be easily press-fitted into the fitting hole 11c. That is, due to the end portion 21A and the claw portion 23, the sectional moment at the end portion 21A is increased. Therefore, the end portion 21A and the claw portion 23 are not easily deformed with respect to the longitudinal axis, and the pressing force applied to the end faces 21P and 23P acts with almost no deviation from the longitudinal axis. It can be easily press-fitted into the fitting hole 11c. The same applies to the connecting portion between the internal terminal portion 21 and the external terminal portion 22.

  On the edge in the longitudinal direction of the internal terminal portion 21, a bulging portion 21a having a width increased in the lateral direction is formed. A part of the edge in the longitudinal direction is sandwiched between the bulging portion 21a and the end portion 22A of the external terminal portion 22 to form the first uneven portion 2A1. Further, the second uneven portion 2A2 is formed by part of the edge in the longitudinal direction being sandwiched between the end portion 22A of the external terminal portion 22 and the claw portion 23. As shown in FIG. 6 and FIG. 7, the lead wire 12 a drawn from the coil 12 is wound around the internal terminal portion 21, and the end portion of the lead wire 12 a is internally formed by fusing (resistance welding) at the claw portion 23. It is connected to the terminal portion 21. That is, the conducting wire 12a is electrically connected to the internal terminal portion 21 at the end opposite to the fixed end (the fitting hole 11c side) of the internal terminal portion 21 with respect to the bobbin 11.

  Further, when the conducting wire 12a is wound around the internal terminal portion 21, the conducting wire 12a is wound around the step of the first uneven portion 2A1. Thereby, the conducting wire 12a can stop shifting in the longitudinal direction of the internal terminal portion 21. Therefore, it is possible to prevent the lead wire 12a from being displaced or cut during molding that is sealed with the mold resin portion 3. Similarly, the conductor 12a is wound around the step of the second uneven portion 2A2. In this embodiment, the concavo-convex portion is constituted by a part of the external terminal portion and the claw portion, but the concavo-convex portion for preventing the lead from being displaced is formed only by changing the width of the internal terminal portion in the short direction. You may make it do.

  In the electromagnetic coil unit configured as described above, the external terminal portion 22 of the terminal member 2 is disposed in the connector portion 31 of the mold resin portion 3 as shown in FIG. Then, when a male connector (not shown) is fitted into the connector part 31, power is supplied to the coil 12 via the external terminal part 22 (terminal member 2). When this electromagnetic coil unit is attached to, for example, an electromagnetic valve, for example, a plunger device incorporating a plunger and an attractor of the electromagnetic valve is inserted into the cylindrical portion 11a of the bobbin 11 from the lower side in FIG.

  As described above, according to the electromagnetic coil unit of the embodiment, the external terminal portion 22 disposed in the connector portion 31 is coupled within the range of the longitudinal edge of the internal terminal portion 21. The end on the claw 23 side, which is the end opposite to the fixed end of the bobbin 11, is an end having a width in the short direction. Therefore, it is possible to easily assemble such as pressing the end portion and press-fitting the internal terminal portion 21 into the bobbin 11. Further, since the short side direction of the external terminal portion 22 is parallel to the longitudinal direction of the internal terminal portion 21, the longitudinal direction of the external terminal portion 22 and the internal terminal portion 21 is substantially perpendicular, and the connector portion 31 has a connector. Even if a stress is applied to the external terminal portion 22 to be connected in the longitudinal direction, this stress is in a direction to twist the internal terminal portion 21, so that the stress is dispersed in the longitudinal direction of the internal terminal portion 21. It will be. Thereby, the effect | action of the stress with respect to the internal terminal part 21 can be reduced, and it becomes difficult to deform | transform.

  In the embodiment, the example in which the connection between the conductive wire 12a and the internal terminal portion 21 is performed by fusing has been described. However, for example, the claw portion 23 of the internal terminal 21 is eliminated, and the fixed end of the internal terminal portion 21 with respect to the bobbin 11 is Alternatively, the conductive wire 12a may be wound around the opposite end 22A, and the conductive wire 12a may be connected to the internal terminal portion 21 by soldering the wound portion. Even when this soldering is performed, if the internal terminal is flat and the end opposite to the fixed end is flat, the internal terminal 21 can be easily press-fitted into the fitting hole 11c as described above. it can.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention.

DESCRIPTION OF SYMBOLS 1 Electromagnetic coil part 11 Bobbin 11a Tube part 11b Flange part 11c Fitting hole 12 Coil 12a Conductor 2 Terminal member 21 Internal terminal part 21A End part 2A1 1st uneven part 2A2 2nd uneven part 22 External terminal part 22A End part 23 Claw part (bending part)
3 Mold resin part 31 Connector part

Claims (7)

An electromagnetic coil unit in which a conductive wire is wound around a bobbin and a part of a terminal member made of a conductive plate connected to the conductive wire of the electromagnetic coil portion is sealed with a mold resin portion. ,
The terminal member is configured integrally with an internal terminal portion fixed to the bobbin and connected to the conducting wire and an external terminal portion disposed in a connector portion of the mold resin portion, and the internal terminal portion and the external Each of the terminal portions has a long plate shape having a longitudinal direction and a short direction, and an end portion in the longitudinal direction of the external terminal portion makes its short direction parallel to the longitudinal direction of the internal terminal portion. The electromagnetic coil unit is structured to be coupled within a range of a longitudinal edge of the internal terminal portion.   The electromagnetic coil unit according to claim 1, wherein the internal terminal portion is press-fitted in a longitudinal direction with respect to the fitting hole of the bobbin and fixed to the bobbin.   The internal terminal portion is flat and has a flat end surface perpendicular to the depth direction of the fitting hole of the bobbin at the end opposite to the fixed end with respect to the bobbin. The electromagnetic coil unit described in 1.   At the end of the internal terminal portion opposite to the fixed end with respect to the bobbin, there is a bent raised portion that forms an angle with the long plate-like plate surface of the internal terminal portion, and the fixed end of the internal terminal portion The end face on the opposite side and the end face on the opposite side to the fixed end of the bent raising part are flat end faces located in the same plane. The described electromagnetic coil unit.   The said conducting wire is electrically connected to this internal terminal part in the edge part on the opposite side to the fixed end with respect to the said bobbin of the said internal terminal part, The Claim 1 thru | or 4 characterized by the above-mentioned. The electromagnetic coil unit described in 1.   6. The electromagnetic coil unit according to claim 5, wherein a concave and convex portion is formed around an edge of the internal terminal portion in the longitudinal direction so as to prevent the conductive wire from being displaced by being wound around the conductive wire.   The electromagnetic coil unit according to any one of claims 1 to 6, wherein the external terminal portion is disposed in parallel with an axis of the electromagnetic coil portion.

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