JP2007018807A - Plate spring member for electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leaf spring member for an electromagnetic relay of which front side and backside can be discriminated, effectively and correctly jointed to a conductive member by caulking. <P>SOLUTION: A main body part 10 has a fixing member insertion hole 11, and the leaf spring member 10 is constructed so as to be fixed to a conduction terminal member 20 by crushing a fixing member R inserted into the fixing member insertion hole 11 and a hole part 21 formed on the conduction terminal member 20 superimposed on the fixing member insertion hole. The leaf spring member is put on a supporting stand 31 of a caulking jointing jig having a concave groove 32 on which an extruded part 33 is formed. A positioning hole 14, in which the extruded part 33 is inserted, is formed on the main body part 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a leaf spring member used for an electromagnetic relay by coupling energization terminal members.

  A movable contact spring block used as a movable contact of an electromagnetic relay is coupled to an energizing terminal member by an energizing terminal member made of a conductive metal plate and a fixing tool such as a rivet or a dowel, and has a metal movable contact on the top. There is known one constituted by a fixed metal leaf spring member.

The following patent document discloses an electromagnetic relay including the movable contact spring block as described above.
JP 2002-015651 A

  By the way, the leaf spring member and the current-carrying terminal member constituting the movable contact spring block overlap each hole, penetrate the fixing tool described above, and crush and bond the fixing tool in that state. Although it has a structure, in order to perform such a caulking / combining operation, a caulking / combining jig having a support base on which the respective members are mounted and performing the caulking operation is usually used.

  FIGS. 6A and 6B show the coupled state of the movable contact spring block 100 assembled by caulking work, where FIG. 6A is a side view and FIG. 6B is a front view.

  The leaf spring member 110 includes a fixture insertion hole 111 formed at the lower end for coupling with the energizing terminal member 120, a spring movable piece insertion hole 112 formed for movement of the movable contact spring block, and a contact mounting hole 113. On the other hand, the energizing terminal member 120 includes a joint portion 122 including a hole portion 121 formed at the upper end for coupling to the leaf spring member 110, and a terminal portion 123 formed to bend and extend below the joint portion 122. And is made up of.

  The leaf spring member 110 of this example has a left-right asymmetrical shape due to the internal structure of the electromagnetic relay, etc., but the left-right asymmetrical leaf spring member 110 is mistakenly turned upside down. If it is placed on the support base of the caulking coupling jig, a movable contact spring block 100A with the left and right sides reversed as shown in FIG. 6C is manufactured, and therefore cannot be used for an electromagnetic relay. Moreover, since the fixing tool is crushed and joined, it is difficult to re-separate both, and the material is often wasted.

  The present invention has been proposed to solve the above-described problems, and an object thereof is to provide a leaf spring member of an electromagnetic relay capable of identifying the front and back of the leaf spring member. It is another object of the present invention to provide a leaf spring member that can prevent a lateral displacement, a longitudinal displacement, and a displacement due to rotation when performing a caulking operation with a caulking coupling jig.

  In order to achieve the above object, the leaf spring member according to claim 1 has a fixture insertion hole, and the fixture insertion hole and a hole formed in the energizing terminal member are overlapped to insert the fixture. In this state, the fixing tool is crushed and fixed to the current-carrying terminal member, and is mounted on a support base of a caulking coupling jig having a concave groove formed with a protrusion. In the main body, an alignment hole for inserting the protrusion is formed.

  According to a second aspect of the present invention, the protrusion and the alignment hole are formed at a position shifted from the center line of the main body to one side end.

  According to a third aspect of the present invention, the fixture insertion hole is a rectangle having a long side along the longitudinal direction of the main body.

  According to a fourth aspect of the present invention, another fixing tool insertion hole is provided in the main body.

  According to a fifth aspect of the present invention, at least one of the fixture insertion holes is formed in a cross shape.

  According to the first to fifth aspects of the present invention, since the plate spring member is formed with an alignment hole, a concave groove for mounting the plate spring member is formed on the support base as a caulking coupling jig. If a protrusion is formed and inserted and protruded into the alignment hole of the main body, the protrusion is used when the leaf spring member is placed on the support base and coupled to the energizing terminal member to manufacture the spring block. Can be prevented from slipping off from the support base. In addition, when performing the caulking work, the protrusions and the concave grooves of the caulking coupling jig can prevent the leaf spring member from being displaced from side to side, from front to back, and from being displaced by rotation, and can be supported in an appropriate state. .

  According to the second aspect, since the protrusion and the alignment hole are provided at a position shifted from the center line of the leaf spring member to one side end, The plate spring member cannot be accommodated in the concave groove even if it is placed so that the protrusion of the caulking coupling jig is inserted into the alignment hole. Therefore, the front and back of the plate spring member are identified by the alignment hole. And manufacturing of defective products can be prevented.

According to the third aspect, since the fixture insertion hole is formed as a rectangle having a long side along the longitudinal direction of the main body, the length of the long side or the short side is adjusted to appropriately adjust the spring load. can do.

  According to the fourth and fifth aspects, since another fixing tool insertion hole is further formed in the main body portion, it is possible to more reliably prevent the left and right, front and rear deviations and rotation deviations of the leaf spring member. it can. In particular, in claim 5, since at least one fixture insertion hole is formed in a cross shape, more accurate alignment can be achieved.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram for explaining a method of manufacturing a movable contact spring block. FIG. 1A shows a state in which a plate spring member and a current-carrying terminal member are mounted and coupled to a support base of a plate spring caulking jig. A top view, (b) is a longitudinal cross-sectional view of the AA line of (a), (c) is a front view of only a caulking coupling jig.

  As shown in FIGS. 1A and 1B, the movable contact spring block 1 has a fixture insertion hole 11 formed to be coupled to a conductive member 20 in a leaf spring member (hereinafter also referred to as a main body portion) 10. And a spring movable piece insertion hole 12 for inserting a spring movable piece 44 a (see FIGS. 3 and 4) for moving the movable contact, and a contact mounting hole 13, and the longitudinal direction of the main body 10. An alignment hole 14 is formed at a position shifted from the center line to one side end. On the other hand, the energizing terminal member 20 is composed of a joint portion 22 including a hole portion 21 formed at the upper end for coupling with the main body portion 10 and a terminal portion 23 formed by bending downwardly. .

  Further, as shown in FIGS. 1A to 1C, the caulking coupling jig 30 has a support base 31 for placing the main body portion 10 on the upper surface thereof, and the center of the support base 31. A concave groove 32 for accommodating and placing the main body portion 10 is formed in the concave groove 32, and a cylindrical projection 33 is formed in the concave groove 32.

  When the main body 10 is accommodated in the concave groove 32, that is, as shown in FIGS. 1 (a) and 1 (b), the protrusion 33 and the alignment hole 14 are formed on the groove surface of the concave groove 32. The protrusions 33 are formed at positions where they overlap each other so that the protrusions 33 protrude through the alignment holes 14 when placed on the surface.

  When the main body 10 is positioned and accommodated in the concave groove 32 as described above, the main body 10 and the main body 10 are overlapped with the fixture insertion hole 11 of the main body 10 so that the hole 21 of the energizing terminal member 20 is superposed. At the same time when the current-carrying terminal member 20 is placed, the fixture R previously placed at a predetermined position of the concave groove 32 is passed through both the holes 11 and 21, and the fixture R is pressed in this state (not shown). ) And the like, and the leaf spring member 10 and the energizing terminal member 20 are caulked and joined as shown in FIGS.

  Next, an example of a method for connecting the main body 10 and the energizing terminal member 20 with the fixture R will be described. FIG. 2 is an explanatory diagram showing a coupling procedure between the main body 10 and the energizing terminal member 20. In this figure, the caulking coupling jig 30 is omitted.

  First, the fixtures R, R for caulking and coupling the main body 10 and the energizing terminal member 20 are placed at predetermined positions of the concave groove 32 (see FIG. 1). In this case, a shallow hole (not shown) for temporarily placing the fixtures R, R may be provided in the concave groove 32 in order to perform positioning accurately.

  Next, the main body 10 constituting the movable contact spring block 1 is inserted into the concave groove 32 so that the alignment hole 14 is inserted into the protrusion 33 and the fixture insertion holes 11 and 11 are inserted into the fixtures R and R. In this state, the current-carrying terminal member 20 is placed so that the holes 21 and 21 are inserted into the fixtures R and R.

  And the front-end | tip part of the fixing tools R and R which protruded from the hole parts 21 and 21 of the electricity supply terminal member 20 is crushed with a pressing instrument (not shown) etc., and both are crimped and couple | bonded.

  After the main body 10 and the energizing terminal member 20 are fixed, the contacts 13a and 13b (see FIGS. 3 and 4) are further attached to the contact mounting holes 13, whereby the movable contact spring block 1 is completed. In the example shown in the drawing, the contacts are retrofitted, but they may be attached before the caulking and joining work. In that case, in order to place the leaf spring surface horizontally with respect to the groove surface when the main body portion 10 is placed in the groove 32, the connecting portion of the contact is crimped so as to protrude from the groove 32. A jig 30 may be used.

  In the present invention, the alignment hole 14 is formed in the main body 10, and the protrusion 33 that is inserted and protruded into the alignment hole 14 is formed in the support base 31 of the caulking coupling jig 30. The main body 10 will not be displaced if it is placed in alignment with 31, and the groove 31 for placing the leaf spring member is formed in the support base 31, so that the protrusion 33 and the groove 32 are formed. As a result, it is possible to prevent the main body 10 from shifting from side to side, from front to back, and from rotation.

  Further, as in this example, when the protrusion 33 and the alignment hole 14 are provided at positions shifted from the center line of the main body 10 to one side end, the width of the concave groove 32 is adjusted. In this case, the main body 10 opposite to the front and back cannot be accommodated in the concave groove 32 even if the protrusion 33 is inserted into the alignment hole 14 and placed. That is, if such a caulking coupling jig 30 is used, the front and back of the leaf spring member 10 can be identified, thereby preventing production of a defective product with the front and back reversed.

  FIG. 3 is an overall view of an electromagnetic relay using the movable contact spring block manufactured as described above. FIG. 4 is an exploded perspective view of the electromagnetic relay shown in FIG. The electromagnetic relay has a so-called c-contact configuration in which a movable contact is disposed between two fixed contacts. However, the movable contact spring block manufactured according to the present invention has a c-contact configuration. The present invention is not limited to this, and can be applied to electromagnetic relays with a contact and b contact.

  The movable contact spring block 1 is attached to the base 46 with the contacts 13a and 13b attached to the front and back of the main body 10 (see FIG. 3). As a result, the main body 10 stands above the base 46. The terminal portion 23 of the energizing terminal member 20 protrudes below the base 46 as a common terminal. As shown in the figure, the leaf spring main body 10 needs to keep the movable contact 13a and the first fixed contact 41a in contact with each other in the non-excited state, so that the spring is deformed and adjusted. Keep it.

  On both sides of the movable contact spring block 1, there are a first fixed contact block 41 having a terminal plate 41b and an electric circuit terminal 41c with a fixed contact 41a, a terminal plate 42b and an electric circuit terminal 42c with a fixed contact 42a. The second fixed contact block 42 is provided, and is mounted on the base 46 like the movable contact spring block 1, the terminal plates 41 b and 42 b stand above the base 46, and the electric circuit terminals 41 c and 42 c Is projected downward.

  In the figure, 43 is an electromagnet block around which an electromagnetic coil 43a is wound, 44 is an amateur provided with a spring movable piece 44a for moving the leaf spring main body 10 by being inserted into the spring movable piece insertion hole 12, 45 is This is an operating piece that is rotatably supported by the yoke 43b of the electromagnet block 43 and moves the spring movable piece 44a of the armature 44 by rotation when attracted by the yoke 43b.

  All of these members are mounted on the base 46, and a cover case 47 is placed thereon.

  Next, the contact / separation operation between the contacts will be briefly described.

  When the electromagnetic coil 43a in the electromagnet block 43 is energized and excited, the operating piece 45 is attracted to the yoke 43b located below, so that the operating piece 45 is connected to the armature 44 by a spring movable piece. 44a is moved in the direction of arrow A, whereby the movable contact 13a is moved away from the first fixed contact 41, the first electric circuit is opened, and the movable contact 13b is brought into contact with the second fixed contact 42, whereby the second electric circuit Is closed.

  Next, when the energization of the electromagnetic coil 43a is interrupted and the non-excited state is restored, the operating piece 45 returns to its original position, whereby the pressing operation of the spring movable piece 44a to the main body 10 is released, and the main body 10 Due to the restoring elastic force, the movable contact 13b is separated from the second fixed contact 42, the second electric circuit is opened, the movable contact 13a returns to contact with the first fixed contact 41, and the first electric circuit is closed. Is done.

  Next, another structural example of the leaf spring member 10 of the present invention will be described. FIG. 5 is a view showing another example of the structure of the leaf spring member 10. In addition, although the example of this figure has shown the example of the alignment hole 14 of the leaf | plate spring member 10, illustration is abbreviate | omitted about the caulking coupling jig | tool corresponding to each.

  The plate spring member 10 shown in FIG. 5A has a positioning hole 14a formed in a rectangular shape having a long side along the longitudinal direction of the plate spring member. A protrusion 33 is formed that can be inserted into the.

  Thus, if the alignment hole 14a is rectangular, the spring load can be adjusted appropriately by adjusting the length of the long side or short side of the hole 14a to be established within the range indicated by the broken line in the figure. it can.

  Further, as shown in FIGS. 5B and 5C, the leaf spring member 10 may be provided with a plurality of alignment holes 14, 14b (14c). If a plurality of holes are provided, when the leaf spring member 10 is placed on the support base 31, a plurality of projections 33 provided on the caulking coupling jig 30 are inserted into the holes 14, 14b (14c), As a result, it is possible to more reliably prevent the leaf spring member 10 from being displaced from side to side, from front to back, and from displacement due to rotation. In particular, as shown in FIG. 5C, if the alignment hole 14c has a cross shape or the like, more accurate alignment is possible.

  In order to reduce the displacement of the leaf spring member 10 after the protrusion 33 (see FIG. 1) is inserted, the protrusion 33 is shaped so that there is no gap when inserted into the alignment hole 14. It is desirable to form.

These are the figures which show the usage point of the crimping | jointing coupling jig of this invention, (a) is a top view which shows the state which mounts a leaf | plate spring on a support stand, and couple | bonds an energization terminal, (b) is (a). Sectional drawing along the AA line of (a), (c) is a front view of only a support stand. It is explanatory drawing which shows the coupling | bonding point of a leaf | plate spring member and an electricity supply terminal member. 1 is an overall view of an electromagnetic relay in which a movable contact spring block having a leaf spring member of the present invention is used. FIG. 4 is an exploded perspective view of the electromagnetic relay shown in FIG. 3. (A)-(c) is a figure which shows the other example of the leaf | plate spring member of this invention. (A), (b) The side view of a conventional movable contact spring block, a front view, (c) It is a front view of the movable contact spring block manufactured by attaching the front and back of a leaf | plate spring member accidentally.

Explanation of symbols

1 movable contact block 10 leaf spring member (main body)
DESCRIPTION OF SYMBOLS 11 Fixing tool insertion hole 14, 14a, 14b, 14c Positioning hole 20 Current supply terminal member 21 Hole part 23 Terminal part 30 Caulking coupling jig 31 Support base 32 Concave groove 33 Projection part

Claims (5)

A fixing tool insertion hole is formed in the main body, and the fixing tool is crushed in a state where the fixing tool is inserted by superposing the fixing tool insertion hole and the hole formed in the energizing terminal member, and fixed to the energizing terminal member. A leaf spring member configured to cause
An electromagnetic wave mounted on a support base of a caulking coupling jig having a concave groove in which a protrusion is formed, and an alignment hole for inserting the protrusion is formed in the main body. A leaf spring member for a relay. In claim 1,
The leaf spring member of the electromagnetic relay, wherein the protrusion and the alignment hole are formed at positions shifted from the center line of the main body to one side end. In claim 1 or 2,
The leaf spring member for an electromagnetic relay, wherein the fixture insertion hole is a rectangle having a long side along the longitudinal direction of the main body. In claim 1 or 2,
A leaf spring member for an electromagnetic relay, wherein the main body is further provided with another fixture insertion hole. In claim 4,
A leaf spring member for an electromagnetic relay, wherein at least one of the fixture insertion holes is formed in a cross shape.

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