JP2018093186A - Coil member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a projecting part from a coil body while having a mechanism capable of mechanizing a connection work of a lead wire and the end of conducting wire wound around the coil body.SOLUTION: A coil member 1 according to the present invention includes a hole 13b that is formed integrally with a bobbin 16 and serves as a fulcrum shaft supporting part that serves as a fulcrum 14c of an operating lever 14 that operates by advancing and retreating a movable iron core 17 in a cylinder 16a of the bobbin 16 and a cylinder 13a that serves as a lead wire supporting part that supports a lead wire 18 connected to the end of a conductor 15, and the hole 13b and the cylinder 13a are provided together in a fulcrum lead wire supporting part 13 as a common member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coil member constituting a solenoid.

  A coil body as a solenoid is configured by having a coil body in which a conducting wire is wound around a bobbin, inserting a movable iron core serving as a plunger into the hollow portion of the bobbin, and driving the actuator by advancing and retracting the movable iron core. The In the coil member configured as described above, the work for connecting the end of the conducting wire wound around the coil body and the lead wire has been conventionally performed manually, and the coil for mechanizing this work The terminal structure of the member is proposed by the applicant of the present application in Patent Document 1 as a lead wire support portion (61).

Utility model registration No. 3205376

  The lead wire support portion (61) proposed in Patent Document 1 is an excellent mechanism capable of mechanizing the connection work between the end of the lead wire wound around the coil body and the lead wire, but the lead wire support portion ( 61) protrudes from the outer frame (21) of the coil body. For this reason, this protrusion part may become an obstacle at the time of mounting a coil member in the inside of an apparatus.

  The present invention has been made under such a background, and has a mechanism capable of mechanizing connection work between a terminal end of a conductive wire wound around a coil body and a lead wire, and protrudes from the coil body. It aims at providing the coil member which can eliminate a part.

  The present invention provides a coil body composed of a conducting wire and a bobbin having a cylinder into which a movable iron core that is wound around the conducting wire and is inserted into a plunger, and a predetermined interval along a side surface and one end of the coil body. A metal member formed in a U-shape on which the coil body is placed inside, a frame in which the U-shaped opening is formed at a position corresponding to the other end of the coil body, and an opening A lid that is passed through and has a hole at a position corresponding to one end of the bobbin cylinder, and a fulcrum that is formed integrally with the bobbin and that acts as a fulcrum for the operating lever that moves by moving the movable iron core in the bobbin cylinder It has a shaft support portion and a lead wire support portion that supports a lead wire connected to the end of the conducting wire, and the fulcrum shaft support portion and the lead wire support portion are provided in a common member. It is a coil member.

  In the coil member described above, when the position where the operating force of the movable iron core is applied to the operating lever and the operating point of the operating lever is used as the power point, the fulcrum is arranged opposite to the operating point of the operating lever across the power point. Can be done.

  In the above-described coil member, the lid portion can have a guide member that supports a predetermined portion between the power point and the action point of the operating lever from both sides.

  In the coil member described above, the operating lever has a cylindrical portion including a movable end protruding from the lid portion of the movable iron core, and an elliptical shape having a long axis in the circumferential direction of the cylindrical portion on a side surface of the cylindrical portion. The cylindrical portion and the movable end portion can be rotatably connected by a pin that is inserted into the elliptical hole and penetrates the movable end portion.

  Alternatively, the coil member described above has a movable end protruding from the lid portion of the movable iron core and a pin penetrating the movable end in a direction parallel to the direction from the fulcrum of the operating lever toward the point of action. The lever has a groove portion that includes a part of the movable end portion and the pin, and when the movable iron core is attracted to the coil body by excitation of the coil body, the operating lever is moved by the end on the fulcrum side of the pin. It can also be pushed down in the direction.

  ADVANTAGE OF THE INVENTION According to this invention, the protrusion part from a coil body can be eliminated, having the mechanism which can attain the mechanization of the connection operation | work of the terminal of the conducting wire wound around a coil body, and a lead wire.

It is a perspective view of a coil member concerning an embodiment of the invention. It is the figure which looked at the coil member of FIG. 1 from the side. It is the figure which looked at the coil member of FIG. 1 from the upper surface. It is a perspective view of the fulcrum lead wire support part and bobbin of a coil member. It is a figure which shows the state at the time of the non-energization when using a coil member as a solenoid. It is a graph which shows the relationship between the attraction | suction force of a plunger, and an air gap. It is a schematic diagram which shows the stroke of the movable iron core of the plunger of a coil member. It is a schematic diagram which shows the stroke of the movable iron core of the plunger of the conventional general structure. It is a figure which shows the fulcrum lead wire support part of a coil member. It is the figure which looked at the fulcrum lead wire support part of FIG. 9 from the upper surface. It is a figure which shows the state which soldered the lead wire and conducting wire of FIG. It is a figure which shows the state which accommodated the soldered lead wire and conducting wire of FIG. 11 in the fulcrum lead wire support part. It is the figure which looked at the fulcrum lead wire support part of FIG. 12 from the side. It is a figure which shows the slot provided in the movable iron core as a comparative example. It is a figure which shows the slot of FIG. 14 changing an angle. It is sectional drawing which shows the notch, E ring, and ring-shaped pad which were provided in the movable iron core as a comparative example. It is a figure which shows the state by which the movable iron core of FIG. 16 is adsorb | sucked by a receiving part. It is a figure which shows the example of the position of the action point of an action | operation lever. It is a figure which shows the example of the position of the action point different from FIG. 18 of an action | operation lever. It is a figure which shows the example of the position of the action point different from FIG. 18, FIG. 19 of an action | operation lever. It is a figure which shows the example of the position of the action point different from FIGS. 18-20 of an action | operation lever. It is a figure which shows the structure of the coil member which concerns on other embodiment, and is a figure which shows the state by which the action | operation lever is pushed up by the repulsive force of a coil spring. It is a figure which shows the state by which the action | operation lever of the coil member of FIG. 22 was pushed down by excitation of the coil body. It is a perspective view of the coil member of the state of FIG. It is a top view of the coil member in the state of FIG.

  A coil member 1 according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, the coil member 1 includes a coil body 10, a frame 11, a lid portion 12, a fulcrum lead wire support portion 13, and an operation lever 14 as main components. In the following description, the side of the coil member 1 where the operating lever 14 is disposed is the upper side, the direction (projection direction) is the upper direction, the opposite side is the lower side, and the direction is the lower direction.

  The coil body 10 includes a conducting wire 15 and a bobbin 16 (see FIG. 4) having a cylinder 16a around which the conducting wire 15 is wound and a movable iron core 17 serving as a plunger is inserted into a hollow portion. As shown in FIG. 2, the coil body 10 is provided so as to cover the outer periphery of the cylinder 16a of the bobbin 16, and a movable iron core 17 serving as a plunger is inserted into a hollow portion of the cylinder 16a. A receiving portion 17a of the movable iron core 17 is provided at the lower end of the movable iron core 17 inserted into the hollow portion of the cylinder 16a, and an electromagnetic force is generated when the conducting wire 15 of the coil body 10 is energized. As a result, the movable iron core 17 is sucked into the receiving portion 17a. In the following description, a portion where the movable iron core 17 protrudes upward from the lid portion 12 is referred to as a movable end portion 17b.

  When used as a solenoid, the coil member 1 is configured such that the moving distance between the movable iron core 17 and the receiving portion 17a is within 2 millimeters. According to this, as will be described later with reference to FIG. 6, the coil member 1 can be efficiently operated as a solenoid.

  The frame 11 is a U-shaped metal member on which the coil body 10 is placed inside at a predetermined interval along the side surface and one end portion of the coil body 10. The opening 11 a of the frame 11 is formed at a position corresponding to the other end of the coil body 10.

  The lid 12 has a hole 12a at a position corresponding to the upper end of the cylinder 16a of the bobbin 16 into which the movable iron core 17 serving as a plunger is inserted. Further, the lid portion 12 includes a guide member 12b that supports the protrusion 14f at a predetermined position between the force point (position of the pin 20) and the action point (position of the hole 14c) of the operating lever 14 from both sides.

  As shown in FIG. 4, the fulcrum lead wire support portion 13 is formed integrally with the bobbin 16. The fulcrum lead wire support portion 13 has a hole 13b as a fulcrum shaft support portion that functions as a support portion for the pin 19 located at the fulcrum position of the operating lever 14 that is operated by the advancement and retraction of the movable iron core 17 in the cylinder 16a of the bobbin 16. And a cylinder 13a as a lead wire support portion for supporting the lead wire 18 connected to the end of the conducting wire 15. That is, the hole 13b as the fulcrum shaft support portion and the cylinder 13a as the lead wire support portion are provided in the fulcrum lead wire support portion 13 as a common member. Furthermore, it has a slit 13c, and from the slit 13c, the winding start of the conducting wire 15 of the coil body 10 and the end of the winding end are drawn into the cylinder 13a and connected to the lead wire 18.

  In addition, the shapes of the fulcrum lead wire support portion 13 and the bobbin 16 in FIG. 4 are examples, and the details can be variously changed. For example, the fulcrum lead wire support portion 13 side of the bobbin 16 is a rectangle and the opposite side is a circle, but both may be a circle or a rectangle. Or, the fulcrum lead wire support portion 13 side can be changed in various ways, for example, a circular shape on the opposite side and a rectangular shape on the opposite side.

  As shown in FIGS. 1 to 3, the operating lever 14 has a hole 14 a into which the pin 19 at the fulcrum of the operating lever 14 is inserted. The elliptical hole 14 b into which the pin 20 at the power point is inserted. Is located on the opposite side of the position of the hole 14c at the position of the operating point of the operating lever 14. The action of the actuating lever 14 expands the action of the movable iron core 17 and is considered to apply the “leverage principle”.

  Further, the operating lever 14 has a cylindrical portion 14e including a movable end portion 17b protruding from the lid portion 12 of the movable iron core 17, and a long axis is provided on the side surface of the cylindrical portion 14e in the circumferential direction of the cylindrical portion 14e. The cylindrical portion 14e and the movable end portion 17b of the movable iron core 17 are inserted into the elliptic hole 14b and pass through the movable end portion 17b of the movable iron core 17. 20 is pivotally connected.

  The operating lever 14 has a fulcrum at the position of the pin 19 of the fulcrum lead wire support 13 and has a hole 14a through which the pin 19 passes. The operating lever 14 has a force point at the position of the pin 20 connecting the movable end 17b of the movable iron core 17 and the cylindrical portion 14e, and an elliptical hole 14b through which the pin 20 passes is formed on the side surface of the cylindrical portion 14e. Have. Further, the operating lever 14 has a hole 14c serving as an action point at a position in the vicinity of the distal end portion 14d of the operating lever 14. As described above, when the position at which the operating point of the operating lever 14 is applied by applying the driving force of the movable iron core 17 to the operating lever 14 is the force point (the position of the pin 20), the fulcrum (the position of the pin 19) is It is arranged opposite to the point of action of the actuating lever 14 (position of the hole 14c) across the force point.

  That is, as described above, it is preferable that the moving distance of the movable iron core 17 that is the moving distance of the force point (the position of the pin 20) is 2 millimeters, so that the user moves the operating point (the position of the hole 14c). The distance between the force point (the position of the pin 20) and the action point (the position of the hole 14c) is determined according to how much distance is desired. For example, if the distance between the fulcrum (pin 19 position) and the force point (pin 20 position) is equal to the distance between the force point (pin 20 position) and the action point (hole 14c position). When the force point (the position of the pin 20) moves 2 millimeters, the action point (the position of the hole 14c) moves 4 millimeters. Alternatively, the distance between the fulcrum (position of the pin 19) and the force point (position of the pin 20) is twice the distance between the force point (position of the pin 20) and the action point (position of the hole 14c). Then, when the force point (the position of the pin 20) moves 2 millimeters, the action point (the position of the hole 14c) moves 6 millimeters. In this way, the distance between the force point (the position of the pin 20) and the action point (the position of the hole 14c) is determined according to how much the user wants to take the moving distance of the action point (the position of the hole 14c). .

  In general, as shown in FIG. 5, a coil spring C is disposed on the lid 12 between the force point (the position of the pin 20) and the action point (the position of the hole 14 c). When the coil body 10 is not energized, the operating lever 14 is separated from the lid 12 by the repulsive force of the coil spring C. When the coil body 10 is energized, the movable iron core 17 is attracted to the receiving portion 17a, and the operating lever 14 Is used so as to approach the lid 12. In FIG. 1 to FIG. 3, the portion where the distal end portion 14 d of the operating lever 14 is drawn by a broken line is a portion that is assumed to be processed by the user into various forms according to specifications. In addition, the operating lever 14 has protrusions 14f that are supported by the guide member 12b from both sides.

(Relationship between air gap d of movable iron core 17 and suction force)
In the coil member 1, the performance is expressed by the attractive force and the moving distance of the movable iron core 17, and these performances are determined by the magnetomotive force (ampere turn), the magnetic efficiency of the magnetic circuit, and the like. F is an attractive force, U is a magnetomotive force, μ is an air magnetic inductivity, D is a diameter of the movable iron core 17, and d is an air gap between the outer wall of the movable iron core 17 and the inner wall of the cylinder 16 a of the bobbin 16. When it is a gap,
F = (1/2) πμ (U ² (D + 2d) / d) (1)
It becomes. Accordingly, it can be seen that the attractive force F increases as the air gap d decreases when the magnetomotive force U and the air permeability μ are constant. The relationship between the suction force F and the air gap d will be described in a graph based on the formula (1). FIG. 6 is a graph showing the relationship between the suction force F of the coil member 1 and the air gap d. The horizontal axis represents the air gap d, and the vertical axis represents the suction force F.

  As shown in FIG. 6, in the region where the air gap d is large, there is no significant difference in the suction force even if the air gap d changes, but in the region where the air gap d is small, the suction force is reduced by a slight change in the air gap d. It can be seen that has changed greatly. Therefore, it is more preferable to keep the air gap d as small as possible. For this reason, a ring member (not shown) through which the movable iron core 17 passes may be disposed on the upper side of the lid portion 12 or the like. This ring member is made of a magnetically permeable material such as iron. Thereby, the ring member can constitute a part of the magnetic circuit together with the lid 12. The inner diameter of the ring member is set as small as possible within a range in which the movable iron core 17 can advance and retract in the axial direction. Further, the ring member is brought into close contact with the lid portion 12. At this time, the ring member and the lid portion 12 may be welded, or the lid portion 12 and the ring member may be integrally molded.

(Relationship between moving distance X of movable iron core 17 and suction force)
The attractive force F of the coil member 1 is inversely proportional to the square of the moving distance X of the movable iron core 17. This relationship can be expressed by the same graph as the graph of FIG. 6 showing the relationship between the suction force F and the air gap d described above. That is, in FIG. 6, the air gap d can be replaced with the moving distance X of the movable iron core 17. In the coil member 1, as described above, the moving distance X of the movable iron core 17 is recommended to be 2 millimeters. This will be described with reference to the following formula (2).

F = (1/2) U ² (μS / X ² ) (2)
Here, F is an attractive force, U is a magnetomotive force, μ is an air permeability, S is a cross-sectional area of the movable iron core 17, and X is a moving distance of the movable iron core 17.

  According to Equation (2), the attractive force F is inversely proportional to the square of the moving distance X of the movable iron core 17 when the magnetomotive force U, the air permeability μ, and the cross-sectional area S of the movable iron core 17 are constant. From this, it can be seen that if the moving distance X is reduced, a large suction force can be obtained. Further, since the “lever principle” is applied, the distance from the fulcrum (position of the pin 19) to the force point (position of the pin 20), the force point (position of the pin 20) to the action point (position of the hole 14c). The distance from the fulcrum (the position of the pin 19) to the action point (the position of the hole 14c) is appropriately adjusted, and the moving distance H of the action point (the position of the hole 14c) corresponding to actual use, the movable iron The movement distance X of the lead 17 is obtained. This will be described with reference to FIGS.

  FIG. 7 is a schematic diagram showing the moving distance X1 of the movable iron core 17, and FIG. 8 is a schematic diagram showing the moving distance X2 of the movable iron core in a conventional general structure. In FIG. 7, the distance from the fulcrum (position of the pin 19) to the force point (position of the pin 20) is L1, the distance from the force point (position of the pin 20) to the action point (position of the hole 14c) is L2, and the fulcrum (pin When the distance from the position 19 to the point of action (position of the hole 14c) is L0, the relationship between the moving distance H of the point of action (position of the hole 14c) and the moving distance X1 of the movable iron core 17 is X1 = It is expressed as H × L1 / L0. Here, since L0 = L1 + L2, X1 = H × L1 / (L1 + L2). If L0 is 3, L1 is 1, and L2 is 2, H / X1 = (L1 + L2) / L1 = 3/1 = 3, and the moving distance H is three times the moving distance X1.

  The difference between the prior art shown in FIG. 8 and the present embodiment shown in FIG. 7 is that, in the prior art, a fulcrum is arranged between the power point and the action point. In such a configuration, when the distance from the fulcrum to the force point is L1, and the distance from the force point to the action point is L2, the relationship between the movement distance H of the action point and the movement distance X2 of the movable iron core is X2 = H × It can be expressed by L1 / L2. Here, if L0 is 3, L1 is 1, and L2 is 2, H / X2 = L2 / L1 = 2/1 = 2, and the moving distance H is twice the moving distance X2.

  Suppose that the distance L1 from the fulcrum to the force point and the distance L2 from the force point to the action point are the same in the present embodiment and the conventional technique, and the same movement distance H of the action point is required. In such a case, comparing the movement distance X1 and the movement distance X2, the denominator of the movement distance X1 of this embodiment is (L1 + L2), the denominator of the movement distance X2 of the prior art is L2, and both numerators are Since (L1 × H) is the same, it can be seen that the moving distance X1 of the movable iron core 17 in the present embodiment can be made smaller than the moving distance X2 of the movable iron core of the conventional example. Further, as shown in the numerical example described above, the moving distance H in the present embodiment can be made larger than that in the conventional example.

  The above-described equation (2) indicates that a large suction force can be obtained if the moving distance X of the movable iron core 17 is reduced. Therefore, in the configuration conditions shown in FIG. 7 and FIG. 8, when the same movement distance H is desired, X1 <X2 is obtained, and according to the configuration of the present embodiment, a suction force larger than that of the prior art can be obtained. Can do. Further, when the moving distance X of the movable iron core 17 is set to the same value, the moving distance H of the action point (the position of the hole 14c) becomes larger in the present embodiment, and the operation can be further increased.

  Further, when the same attractive force as in the prior art is used, the magnetomotive force may be small, so that the number of windings of the conductive wire can be reduced, and the coil member 1 can be reduced in size and cost.

  Further, without changing the specifications of the coil body 10 and the frame 11, the distance L1 from the force point (position of the pin 20) to the fulcrum (position of the pin 19) of the movable iron core 17 and the point of action from the fulcrum (position of the pin 19). If the distance L0 to (the position of the hole 14c) is adjusted, the moving distance H of the action point (the position of the hole 14c) can be arbitrarily adjusted while keeping the moving distance X1 of the movable iron core 17 constant. Thus, the coil member 1 can be easily standardized and easy to use.

(About the connection method of the lead wire 15 and the lead wire 18 in the fulcrum lead wire support part 13)
The fulcrum lead wire support portion 13 is formed integrally with the bobbin 16, and as shown in FIGS. 9 to 13, the two cylinders 13a in which the conducting wire 15 and the lead wire 18 are respectively stored, and the pin 19 of the fulcrum 14a are provided. And a hole 13b to be inserted.

  As shown in FIG. 9, the lead wire 18 is passed through the cylinder 13a of the fulcrum lead wire support portion 13 from the lower side to the upper side with the covering 18a attached, and the winding start and end ends of the coil body 10 are passed. The conducting wire 15 is passed through the slit 13c in the upward direction of the fulcrum lead wire support portion 13, and the end of the conducting wire 15 is wound around the lead wire 18 penetrating the cylinder 13a. As shown in FIG. 10, the shape of the slit 13c is such that the winding start of the conducting wire 15 of the coil body 10 and the end of the winding end are easily guided from the side surface of the coil body 10 into the cylinder 13a. As it goes to the 10th side, it has a letter C shape so that the distance between the two slits 13c increases. That is, since the winding start and winding end of the conducting wire 15 of the coil body 10 are drawn into the slit 13c from the portion where the distance between the two slits 13c is farthest, the winding start and winding end of the conducting wire 15 are separated from each other. It is possible to avoid the occurrence of the winding start and the end of winding of the conducting wire 15 being entangled.

  Subsequently, as shown in FIG. 11, solder 18 b is applied to a portion where the end of the lead wire 15 is wound around the lead wire 18 penetrating upward in the fulcrum lead wire support portion 13. As shown in FIGS. 12 and 13, the lead wire 18 is pulled downward so that the soldered portion 18b in the state of FIG. 11 is accommodated in the cylinder 13a. In this manner, the portion of the solder 18b between the lead wire 18 and the conductive wire 15 is accommodated in the cylinder 13a of the fulcrum lead wire support portion 13.

(Effects according to the present embodiment)
As described above, the coil member 1 is formed integrally with the bobbin 16 and serves as a fulcrum shaft of the operating lever 14 that expands the operation of the movable iron core 17 that advances and retreats in the cylinder 16 a at the center of the bobbin 16. A fulcrum lead wire support portion 13 as a common member is provided with a hole 13b as a fulcrum shaft support portion and a cylinder 13a as a lead wire support portion for supporting a lead wire 18 connected to the end of the conducting wire 15. Therefore, the projecting portion from the coil body 10 can be eliminated while having a mechanism capable of mechanizing the connection work between the end of the conductive wire 15 wound around the coil body 10 and the lead wire 18.

  Further, since the soldered portion 18b corresponding to the connecting portion between the conducting wire 15 and the lead wire 18 is housed and protected in the cylinder 13a, the connecting portion between the conducting wire 15 and the lead wire 18 is cut off. The reliability can be kept high.

  Further, when the position at which the operating point of the operating lever 14 (the position of the hole 14c) is applied by applying the driving force of the movable iron core 17 to the operating lever 14 is defined as the power point (the position of the pin 20), the fulcrum (the position of the pin 19). Since the position is arranged opposite to the point of action of the actuating lever 14 (position of the hole 14c) across the force point (position of the pin 20), the point of action (hole) can be achieved even if the moving distance of the movable iron core 17 is shortened. 14c) can be increased. According to this, as shown in FIG. 5, when the coil member 1 is configured as a solenoid, the distance between the movable iron core 17 and the receiving portion 17a can be shortened, and a solenoid that exhibits a strong force is configured. be able to.

  Further, the lid portion 12 includes a guide member 12b that supports the protrusion 14f, which is a predetermined portion between the force point (the position of the pin 20) and the action point (the position of the hole 14c) of the operating lever 14, from both sides. The lateral movement of the operating lever 14 can be prevented, and the operation of the operating lever 14 can be stabilized.

  Further, the operating lever 14 has a cylindrical portion 14e including a movable end portion 17b protruding from the lid portion 12 of the movable iron core 17, and a long axis is provided on the side surface of the cylindrical portion 14e in the circumferential direction of the cylindrical portion 14e. The cylindrical part 14e and the movable end part 17b of the movable iron core 17 are inserted into the elliptical hole 14b and can be rotated by a pin 20 penetrating the movable end part 17b of the movable iron core 17. As described below, it has a useful effect.

  As a first effect, it is not necessary to perform processing such as slitting on the movable end portion 17 b of the movable iron core 17. In the coil member 100 of the comparative example, as shown in FIGS. 14 and 15, a slit 102 is provided at the end of the movable iron core 101, and the operating lever 103 is sandwiched between the operating lever 103 inside the slot. It is connected to the movable iron core 101. On the other hand, since the coil member 1 has the cylindrical portion 14e that encloses the movable end portion 17b of the movable iron core 17 as described above, the movable iron core 17 itself needs to be subjected to processing such as slitting. Absent. Thereby, the manufacturing process of the coil member 1 can be simplified, and manufacturing cost can also be reduced.

  As a second effect, a member for eliminating a collision sound generated when the movable iron core 17 is attracted to and collides with the receiving portion 17a can be omitted. As shown in FIGS. 16 and 17, in the coil member 200 of the comparative example, the movable iron core 201 is notched in the movable iron core 201 in order to eliminate the collision sound generated when the movable iron core 201 is attracted to and collides with the receiving portion 202. 203 is provided, and the E-ring 204 or the like is fitted into the notch 203 so that the movable iron core 201 does not collide with the receiving portion 202. That is, as shown in FIG. 17, when the movable iron core 201 is attracted to the receiving portion 202, the E-ring 204 fitted on the movable iron core 201 is just before the movable iron core 201 and the receiving portion 202 collide. Is in contact with the lid portion 205 to avoid a collision between the movable iron core 201 and the receiving portion 202. Further, a ring-shaped pad 206 made of a soft material is inserted between the E-ring 204 and the lid 205 in order to eliminate the sound generated when the E-ring 204 comes into contact with the lid 205. On the other hand, in the coil member 1, since the cylindrical portion 14e itself of the operating lever 14 has the same role as the above-described E-ring, the conventional cutout of the movable iron core, the E-ring, the ring-shaped pad and the like are omitted. be able to. Thereby, the manufacturing process of the coil member 1 can be simplified, and manufacturing cost can also be reduced. Note that the ring-shaped pad 206 may be inserted between the cylindrical portion 14 e and the lid portion 12 in the coil member 1.

(Other embodiments)
The embodiment described above can be variously modified without departing from the gist thereof. For example, the shape of the distal end portion 14d of the operating lever 14 can be variously changed according to user specifications. The example of FIG. 18 is the shape of the tip portion 14d indicated by a broken line in the above-described embodiment. The example of FIG. 19 is an example in which the distal end portion 14d1 of the operating lever 14 is formed facing upward. The example of FIG. 20 is an example in which the distal end portion 14d2 of the operating lever 14 is formed facing downward. The example of FIG. 21 is an example in which the distal end portion 14d3 of the operating lever 14 is formed obliquely. In this manner, the distal end portion 14d of the operating lever 14 can have various directions and shapes.

  As shown in FIGS. 22 and 23, the coil member 1a is the point of action from the position of the movable end 17c protruding from the lid 12 of the movable iron core 17 and the hole 14a serving as the fulcrum of the operating lever 14α. And a pin 20a that penetrates the movable end 17c in a direction parallel to the direction toward the hole 14c. The actuating lever 14α has a groove 17d that encloses part of the movable end 17c and the pin 20a. When the movable iron core 17 is attracted to the coil body 10 by the excitation of the coil body 10, the operating lever 14α is pushed down toward the coil body 10 by the end 20b on the fulcrum side of the pin 20a.

  That is, the end 20b on the fulcrum side of the pin 20a pushes down the floor surface 17e of the groove 17d, thereby pushing down the operating lever 14α toward the coil body 10. At this time, as shown by arrow F in FIG. 22, the position where the end 20b on the fulcrum side of the pin 20a and the floor surface 17e of the groove 17d come into contact is the force point for operating the operating lever 14α.

  FIG. 24 is a perspective view of the coil member 1a in a state where the operating lever 14α is pushed down. FIG. 25 shows a top view of the coil member 1a in a state where the operating lever 14α is pushed down.

  According to this, as compared with the distance from the position of the hole 14a serving as the fulcrum in the coil member 1 shown in FIG. 2 to the position of the pin 20 serving as the force point, the force point from the position of the hole 14a serving as the fulcrum in the coil member 1a. The distance to the position of the arrow F can be a short distance. Thus, since the distance from the fulcrum of the coil member 1a to the force point is shorter than the distance from the fulcrum of the coil member 1 to the force point, the coil is compared with the coil member 1 if the operation amount of the operating lever 14α is the same. In the member 1a, the moving distance of the movable iron core 17 may be short.

  Here, referring back to the relationship between the moving distance X of the movable iron core 17 and the suction force described above with reference to FIG. 6, the shorter the moving distance X of the movable iron core 17 is, the more the suction force of the coil body 17 is. growing. Therefore, according to the coil member 1a, compared with the coil member 1, if the operation amount of the operation lever 14α is the same, a larger suction force can be obtained. In other words, according to the coil member 1 a, the same attractive force can be obtained even if the coil body 17 is downsized as long as the operation amount of the operation lever 14 α is the same as that of the coil member 1.

DESCRIPTION OF SYMBOLS 1,1a ... Coil member, 10 ... Coil body, 11 ... Frame, 11a ... Opening part, 12 ... Cover part, 12a ... Hole, 12b ... Guide member, 13 ... Supporting point lead wire support part (Supporting shaft support part, lead wire) Support portion, common member), 14, 14α ... acting lever, 14a, 14c ... hole, 14b ... elliptical hole (elliptical hole), 14e ... cylindrical portion, 14f ... protrusion (predetermined location), 15 ... lead wire, 16 ... bobbin, 17 ... movable iron core, 17b, 17c ... movable end, 17d ... groove, 19, 20, 20a ... pin, 20b ... end on the fulcrum side of the pin

Claims (5)

A coil body composed of a conductive wire and a bobbin having a cylinder into which a movable iron core that is wound and wound with the conductive wire is inserted;
A metal member formed in a U-shape on which the coil body is placed inside at a predetermined interval along a side surface and one end of the coil body, and a U-shaped opening is formed on the coil body. A frame formed at a position corresponding to the other end,
A lid that is passed through the opening and has a hole at a position corresponding to one end of the cylinder of the bobbin;
A fulcrum shaft support portion that is formed integrally with the bobbin and serves as a fulcrum of an operating lever that is operated by advancing and retreating of the movable iron core in the cylinder of the bobbin;
A lead wire support for supporting a lead wire connected to the end of the conducting wire;
Have
The fulcrum shaft support portion and the lead wire support portion are provided in a common member.
The coil member characterized by the above-mentioned. The coil member according to claim 1,
When the position where the operating force of the movable iron core is applied to the operating lever to apply the operating point of the operating lever is a power point, the fulcrum is arranged opposite to the operating point of the operating lever across the power point. To be
The coil member characterized by the above-mentioned. The coil member according to claim 1 or 2,
The lid includes a guide member that supports a predetermined portion between the force point and the action point of the operating lever from both sides.
The coil member characterized by the above-mentioned. The coil member according to any one of claims 1 to 3,
The operating lever has a cylindrical portion including a movable end protruding from the lid of the movable iron core,
The side surface of the cylindrical portion has an elliptical hole having a long axis in the circumferential direction of the cylindrical portion,
The cylindrical portion and the movable end portion are inserted into the elliptical hole and are rotatably connected by a pin penetrating the movable end portion.
The coil member characterized by the above-mentioned. The coil member according to any one of claims 1 to 3,
A movable end protruding from the lid of the movable iron core;
A pin that penetrates the movable end in a direction parallel to a direction from the fulcrum of the actuating lever toward the action point;
Have
The operating lever has a groove that encloses a part of the movable end and the pin,
When the movable iron core is attracted to the coil body by excitation of the coil body, the operating lever is pushed down toward the coil body by the end of the pin on the fulcrum side.
The coil member characterized by the above-mentioned.

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