JP4238778B2 - Switch device - Google Patents

Description

  The present invention relates to a switch device.

  2. Description of the Related Art Conventionally, there are provided switches having light emitting means such as a position indicator lamp that is lit for position display and an indicator lamp that is lit when the switch is on regardless of the capacity of a load.

  In such a switch device, in order to connect a terminal plate to which a power line is connected to a light emitting source which is a light emitting means built in the switch device, an elastic contact made of a conductive metal plate is connected to the terminal plate. There is provided an apparatus in which a current path between the light emitting means and the terminal plate is formed by caulking and fixing and contacting the contacts elastically with a light emitting display circuit board provided with the light emitting means (Patent Document 1). .

  On the other hand, instead of using the above contacts, the light emitting means and the terminal plate are electrically connected using lead wires. In this case, as shown in FIG. A lead wire connecting piece 101a for welding and fixing by spot welding or the like is integrally projected from one end side of the terminal plate 101, and the lead wire is welded and fixed to the lead wire connecting piece 101a to connect the terminal plate and the lead wire. I was connected.

Moreover, as a terminal board provided with such a lead wire connecting piece, as shown in FIG. 9B, in the substantially U-shaped terminal board 102 having the side piece parts 102a and 102b, one side piece part 102b. Is used as a lead wire connecting piece to which the lead wire 103 is fixed by welding, or as shown in FIG. 9C, a flat lead wire connecting piece 102c is integrally formed vertically outward from one side piece portion 102b. Protrusion is provided.
Japanese Patent Laying-Open No. 2003-151402 (FIGS. 1 and 3)

  By the way, when the above-described terminal plate 102 is housed in the switch device, the side plate portion 102b of the terminal plate 102 faces and is parallel to the wall surface of the wall portion 104 of the switch device, and the side piece portion 102b and the wall portion 104 In this case, the lead wire is disposed with a gap for accommodating the lead wire. At this time, in the terminal plate 102 shown in FIG. 9B, since the side piece portion 102b is parallel to the wall portion 104 as described above, the lead wire connecting piece is also parallel to the wall portion 104. The tip 103a of the lead wire 103 is welded and fixed to the line connecting piece from the wall 104 side by spot welding, so that it is electrically connected to the light emitting means (not shown). Further, in the terminal plate 102 shown in FIG. 9C described above, since the lead wire connecting piece 102c protrudes vertically outward from the side piece portion 102b, the lead wire connecting piece 102c and the wall portion 104 are separated from each other. The surface directions are orthogonal to each other, and the tip portion 103a of the lead wire 103 is welded and fixed to the surface of the lead wire connecting piece 102c by spot welding, so that it is electrically connected to the light emitting means (not shown). Yes.

  Such a lead wire 103 is drawn upward in FIGS. 9B and 9C in order to electrically connect the base end portion (not shown) to the light emitting means (not shown). At this time, in the terminal plate 102 of FIG. 9B, the tip portion 103a of the lead wire 103 welded and fixed to the lead wire connecting piece 102c faces upward, which is necessary for pulling out the lead wire 103 upward. When the lead wire 103 was stored, the bending of the lead wire 103 was strong at the portion surrounded by the broken line indicated by A when the lead wire 103 was stored. Further, in the terminal board 102 in FIG. 9C, the surface direction of the lead wire connecting piece 102c is directed upward, so that the bending amount of the lead wire 103 is reduced compared to the case of FIG. 9B. However, since the lead wire connecting piece 102c approaches the wall portion 104, a sufficient space for bending the lead wire 103 cannot be obtained, and the lead wire 103 is bent at the portion surrounded by the broken line B shown in FIG. Was getting stronger. When a portion with a strong bend occurs in the lead wire 103 as described above, an excessive stress is applied to the lead wire 103 in this portion, which causes a problem that the lead wire is easily broken.

  This problem can be solved temporarily by increasing the storage space of the lead wire 103, such as by increasing the gap between the terminal plate 102 and the wall 104, but in this case, avoiding an increase in the size of the switch device. Therefore, there has been a new problem that the apparatus cannot be downsized.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a switch device that can reduce the stress applied to the lead wire and prevent the disconnection of the lead wire without increasing the size of the switch device. is there.

  In order to solve the above-mentioned problems, in the invention of claim 1, at least two terminal plates are accommodated in the terminal plate housing portion and connected to the power line in the container body having the terminal plate housing portion formed therein. A switch mechanism for turning on and off the current between the terminal plates; and a light emitting means is electrically connected to at least one of the terminal plates by a lead wire, and a power source is electrically connected to both ends of the light emitting means. And a light emitting display block that emits light to the outside of the body by emitting light from the light emitting means, wherein the terminal plate to which the lead wire is connected is an inner part of the terminal plate housing portion. A lead wire connecting piece that is disposed with a gap from the wall surface and that is inclined from the portion facing the inner wall surface toward the bottom surface of the terminal plate housing portion is integrally projected on the inner wall surface side. Place the lead wire on the surface of the lead wire connection piece. It has contact fixed to the switch device according to claim.

  According to the first aspect of the present invention, since the lead wire is welded and fixed to the lead wire connecting piece that is inclined toward the bottom surface of the terminal plate storage portion and protrudes toward the inner wall surface side, the terminal plate and the terminal plate storage portion are A sufficient space for bending the lead wire can be obtained in the gap with the inner wall surface, and it is not necessary to bend the lead wire excessively. Therefore, the lead wire can be uniformly and gently bent, so that a portion with a strong bending does not occur in the lead wire, and excessive stress is not applied to the lead wire. As a result, stress applied to the lead wire is reduced, and disconnection of the lead wire is prevented. In addition, since the lead wire connection piece is provided so as to be inclined, it is not necessary to increase the size of the switch device, and in addition, the material of the terminal board is good and the parts can be processed easily. . Further, since the lead wire connecting piece is inclined from the portion facing the inner wall surface of the terminal plate, the lead wire can be easily sandwiched between the electrodes when spot welding is performed, for example. Therefore, the workability of the lead wire welding work can be improved.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the lead wire connecting piece is formed in a shape in which the distal end side is wider than the proximal end side.

According to the invention of claim 2, since the leading end side of the lead wire connecting piece is wide, the workability of the lead wire welding work can be further improved.

  In the present invention, since the lead wire does not have a strong bending portion, excessive stress is not applied to the lead wire. Therefore, the stress applied to the lead wire is reduced, the lead wire can be prevented from being disconnected, and the switch device is large-sized. In addition, there is an effect that the material for the terminal board is good and parts can be processed easily, and further, the workability of the lead wire welding work can be improved.

  The switch device 1 according to the embodiment of the present invention is a so-called scarf switch that includes an indicator lamp that is lit when the switch is on regardless of whether the load is lit or extinguished. The present invention is not limited, and the present invention can also be applied to, for example, a firefly switch having a position indicating lamp that is turned on for position display.

  As shown in FIG. 2, the switch device 1 has a terminal plate housing portion 2a formed therein by a plurality of formed wall portions 2b and groove portions 2c, 2d, 2e, 2f, and a front surface (upper side in FIG. 2) opened. A container body comprising a box-like body 2 and a rectangular frame-like cover 3 that is provided with an operation handle hole portion 3a and is fitted to the front surface of the body 2, is housed in the terminal plate housing portion 2a and is connected to a power line (see FIG. Terminal plates 4, 5, 6 connected to the terminal plate 4, a switch mechanism S (see FIG. 8) for turning on / off current between the terminal plates 4, 6, and the light emitting means 8 to the terminal plate 5 and the lead wire 9 The light emitting display block 11 emits light to the outside of the container by causing the light emitting means 8 to emit light by electrically connecting a power source (not shown) to both ends of the light emitting means 8. It is equipped with.

  As shown in FIG. 2, the body 2 has a rectangular parallelepiped box shape made of a synthetic resin molded product with an open front surface, and a pair of locking projections spaced apart in the longitudinal direction on both outer side surfaces in the short direction. 12 is protrudingly provided. In addition, a terminal plate housing portion 2a is formed inside by a plurality of wall portions 2b and groove portions 2c, 2d, 2e, and 2f provided to position the terminal plates 4, 5, and 6. On the rear wall of the body 2 corresponding to the bottom of the terminal board housing portion 2a, power supply line insertion holes (not shown) communicating the inside and outside of the body 2 are spaced apart in the short direction of the body 2 at both ends in the longitudinal direction. Each pair is provided so that a power source line of a power source, a power source line of a load, and the like can be inserted into the body 2. In addition, the terminal plate storage portion 2a has a partition rib 2g that is separated so as not to contact the terminal plates 4 and 5, a regulation rib (not shown) having a V-shaped groove, and a space for storing the lead wire 9. Ribs 2h (see FIG. 1) are provided.

  On the body 2, a terminal plate 4 having a fixed contact 4a, a terminal plate 5 having a lead wire connecting piece 5a, an opening / closing body 7 having movable contacts 7a on both surfaces, and an opening / closing body 7 are placed. The terminal board 6 provided with the mounting piece 6a for it, the four lock springs 13, the two release buttons 14, and the contact 15 are accommodated.

  The terminal plate 4 is integrally formed in a U-shape consisting of a pair of side pieces 4b, 4c parallel to each other by a conductive metal plate and a connecting portion 4d for connecting them, and the outer surface of one side piece 4b Is provided with a fixed contact 4a.

  As shown in FIGS. 3 (a) to 3 (c) and FIG. 4 (a), the terminal plate 5 has a pair of side piece portions 5b and 5c parallel to each other by a conductive metal plate, and a connecting portion for connecting them. It is integrally formed in a U-shape consisting of 5d. In addition, one side piece 5b is formed with a bifurcated tip and includes a lead wire connecting piece 5a and a hanging piece 5e. The lead wire connecting piece 5a is bent outward by about 45 degrees with respect to the hanging piece 5e as shown in FIG. 3 (b), and the lead wire is connected to the surface 5f as shown in FIG. 4 (b). 9 is fixed by welding by spot welding or the like.

  The lock spring 13 includes a contact portion 13a formed by bending one end of a belt-shaped leaf spring into an S shape, a lock portion 13b formed by bending the other end into a J shape, a contact portion 13a, and a lock portion. A connecting portion 13c for connecting 13b is integrally formed. The release button 14 is formed in a column shape from a synthetic resin molded product, and pressing pieces 14a for pressing the locking portion 13b of the locking spring 13 are provided so as to protrude from both side surfaces. The contact 15 is formed of a conductive metal plate, is integrally provided to project from the flat base 15b and the base 15b, and has a belt-like shape that has elasticity and is inclined with respect to the surface direction of the base 15b. An elastic piece 15 a is provided, and the base 15 b is caulked and fixed to the connecting portion 4 d of the terminal plate 4.

  These terminal plates 4 and 5 are arranged on the one end side (left side of FIG. 2) of the terminal plate storage portion 2a of the body 2 together with the two lock springs 13 and 13 and the release button 14 as follows. The terminal plate 4 has the side piece portion 4c inserted and held in the groove portion 2c, and the side piece portion 4b is directed to the other end side (right side in FIG. 2) of the terminal plate storage portion 2a and a part of the side piece portion 4b. Is brought into contact with the wall portion 2b on one end side of the terminal plate storage portion 2a so that the terminal plate storage portion 2a corresponds to one power line insertion hole provided on the bottom portion on one end side of the terminal plate storage portion 2a. Is arranged. One locking spring 13 has a connecting portion 13c that abuts on the side piece 4b, and a contact portion 13a and a locking portion 13b that abut on the side piece 4c. Is arranged. The speed at which the power line inserted into the body 2 from the power line insertion hole is connected from the side piece 4c of the terminal plate 4 thus arranged, the contact part 13a of the lock spring 13 and the lock part 13b. A connection terminal a (see FIG. 8) is configured. The terminal plate 5 has the side piece 5c inserted and held in the groove 2d, and faces the rib 2h as shown in FIG. 1 with the side piece 5b and the lead wire connecting piece 5a facing the other end of the terminal plate storage portion 2a. At the same time, it is arranged in the terminal plate housing portion 2a so as to correspond to the other power line insertion hole provided at the bottom of one end side of the terminal plate housing portion 2a with a gap from the rib 2h. The other locking spring 13 has a connecting portion 13c that contacts the side piece 5b, and the contact portion 13a and the locking portion 13b that contact the side piece 5c. As in the case of the terminal plate 4 and the lock spring 13 described above, a quick connection terminal b (see FIG. 8) is configured to connect the power line inserted into the body 2 from the power line insertion hole. . At this time, the terminal plates 4 and 5 are spaced apart from each other in the short direction of the body 2 by the partition ribs 2g, so that no conduction occurs between the terminal plates 4 and 5. The release button 14 is stored in the terminal plate storage portion 2a with the pressing pieces 14a and 14a abutting against the lock portions 13b and 13b of the lock springs 13 and 13, respectively. In addition, an operation hole (not shown) corresponding to the release button 14 is formed in the rear wall of the body 2 which is a bottom portion on one end side of the terminal plate storage portion 2a. The release button 14 can be pressed by inserting the tool.

  The terminal plate 6 is made of a conductive metal plate, and has a rectangular connection piece 6b and a pair of terminal pieces that are suspended from one end side in the short direction of the connection piece 6b and spaced apart in the longitudinal direction of the connection piece 6b. 6c, 6c, a hanging piece 6e suspended in parallel with the terminal pieces 6c, 6c from the other end side in the short direction of the connecting piece 6b, and extending from the end of the hanging piece 6e in the opposite direction to the connecting piece 6b. And a flat plate-like mounting piece 6a formed with a bearing groove (not shown) along the longitudinal direction of the connecting piece 6b.

  The terminal plate 6 is disposed on the other end side of the terminal plate storage portion 2a of the body 2 as follows along with the two lock springs 13 and 13 and the release button 14. In the terminal plate 6, the terminal pieces 6c and 6c are inserted and held in the grooves 2e and 2f, respectively, the mounting piece 6a is directed to one end side of the terminal plate storage portion 2a, and a part of the hanging piece 6e is part of the terminal plate storage portion 2a. The terminal pieces 6c and 6c are made to correspond to the pair of power supply line insertion holes provided at the bottom of the other end side of the terminal plate storage portion 2a. It arrange | positions at the board storage part 2a. The locking springs 13 and 13 are arranged such that the connecting portion 13c contacts the hanging piece 6e, and the contact portion 13a and the locking portion 13b separately contact the terminal pieces 6c and 6c. A quick connection terminal for connecting a power line inserted into the body 2 from the power line insertion hole on the other end side of the terminal plate housing 2a from the terminal plate 6 and the lock springs 13 and 13 arranged in this way. c and d (see FIG. 8) are configured. The release button 14 is stored in the terminal plate storage portion 2a with the pressing pieces 14a and 14a abutting against the lock portions 13b and 13b of the lock springs 13 and 13, respectively. In addition, an operation hole (not shown) corresponding to the release button 14 is formed in the rear wall of the body 2 which is the bottom on the other end side of the terminal board storage portion 2a. The release button 14 can be pressed by inserting the tool.

  Next, the quick connection terminals a, b, c and d constituted by the terminal plates 4, 5 and 6 and the lock spring 13 will be described by taking the quick connection terminal a consisting of the terminal plate 4 and the lock spring 13 as an example. To do. For example, when a power line (not shown) from a load is inserted into the body 2 through a power line insertion hole provided in the rear wall of the body 2, the tip of the power line comes into contact with the lock portion 13b, and from here When the power line is further pushed forward, the leading end of the power line advances into the body 2 while pushing and bending the locking part 13b and the contact part 13a, and the leading end part of the power line eventually becomes a side piece with the contact part 13a and the locking part 13b. It is pinched by the part 4c and is electrically connected. At this time, the distal end portion of the locking portion 13b bites into the power supply line, so that the power supply line is mechanically held so as not to come off from the body 2. In particular, the locking portion 13b is inclined toward the insertion direction of the power supply line. Therefore, when inserting the power supply line, the locking portion 13b is easy to bend because it is easily bent, and conversely when the power supply line is pulled out. Since the locking portion 13b is difficult to bend, it cannot be easily removed. The power line connected to such a quick-connect terminal is an insulation-coated electric wire, and when inserted into the body 2, the insulation coating is removed so that the core wire is exposed by a predetermined length. The core wire is held between the terminal plate 4 and the lock spring 13. Therefore, a strip gauge 25 (see FIG. 5B) that defines the length of the exposed core wire is provided on the rear wall of the body 2. In addition, it is preferable that the quick connection terminal constituted by the terminal plate 4 and the lock spring 13 is applicable even when the core wire of the power supply wire is a stranded wire.

  By the way, when the power line connected to the quick connection terminal is removed as described above, the tip of a tool such as a flathead screwdriver is inserted into the body 2 from the operation hole and the release button 14 is pressed. It is possible to cancel the connection of the power supply line. That is, by pressing the release button 14 at the tip of the tool, the pressing piece 14a of the release button 14 presses the lock portion 13b, and the lock portion 13b is pushed and bent away from the power line. In addition, the mechanical holding of the power line is released and the power line can be easily pulled out.

  The opening / closing body 7 is formed from a conductive metal plate in the shape of an elongated plate, and has a tip portion 7b in which a rear end portion of an elastic body 16 such as a coil spring is brought into contact with one end side in the longitudinal direction, and the other in the longitudinal direction A base portion 7c that is pivotally supported by the bearing groove of the mounting piece 6a of the terminal plate 6 on the end side, a projecting piece 7d that protrudes from one end side in the short direction, and a movable contact 7a on both surfaces of the substantially central portion. ing.

  The opening / closing body 7 is mounted on the mounting piece 6a of the terminal plate 6 and is pivotally supported by the base portion 7c so as to be swingable in the longitudinal direction of the body 2, and the projecting piece 7d is provided on the body 2. And inserted into a V-shaped groove of the restriction rib. The opening / closing body 7 arranged in this manner is housed so as to be swingable in the longitudinal direction of the body 2, but the projecting piece 7 d is inserted and held in the V-shaped groove of the restriction rib. Thus, the swing range of the opening / closing body 7 is restricted. The opening / closing body 7 is electrically connected to the terminal plate 6, and when the opening / closing body 7 is tilted to one end side of the terminal plate housing portion 2 a, the movable contact 7 a of the opening / closing body 7 is fixed to the fixed contact 4 a of the terminal plate 4. It comes to contact with. Therefore, when one movable contact 7a of the opening / closing body 7 and the fixed contact 4a of the terminal plate 4 are brought into contact with each other, energization between the terminal plate 4 and the terminal plate 6 is turned on / off. In this way, the switch mechanism S is constituted by the opening / closing body 7 and the terminal plates 4 and 6.

  The cover 3 is made of a synthetic resin molded product, and is formed in a rectangular frame shape having an operation handle hole portion 3a provided with an operation handle 19 described later formed of a rectangular hole at the center. A pair of projecting pieces 3b, 3b spaced apart in the longitudinal direction of the cover 3 are integrally projected rearward from the rear end portions of the both side walls on both side walls in the short direction of the cover 3. The protruding piece 3b has a flat plate shape, and a locking hole 3c is opened at the center. The locking protrusion 12 provided on the body 2 when the cover 3 is attached to the front surface of the body 2 is inserted into the locking hole 3c. The body 2 and the cover 3 can be firmly attached by being locked with each other. Further, a support portion 3d protrudes forward from a substantially central portion of the front end portion of the both side walls. A bearing portion 17 formed of a groove along the front and rear of the cover 3 is formed on the inner surface side of the support portion 3d and the both side walls (the portion on the operation handle hole portion 3a side), and the front end side of the bearing portion 17 is formed. Is closed sharply, and the rear end side of the bearing portion 17 is opened to face outward from the rear end portion of the cover 3. A cover rib 3e is integrally formed on both sides of the cover 3 in the longitudinal direction from the front end to the front, and each pair of attachments spaced apart from each other in the short direction of the cover 3 is provided on the cover rib 3e. Claws 18 and 18 are projected. Although not described in detail here, such an attachment claw 18 is provided to hold the switch device 1 on the attachment frame by engaging with an attachment hole provided in the attachment frame for the wiring device. When the switch device 1 is embedded in a work surface such as a wall surface, the switch device 1 can be easily attached to a mounting frame attached to the work surface. At this time, the front end face of the abutment rib 3e comes into contact with the mounting frame. 5A and 5B, the handle cover 21 described later is disposed between the contact ribs 3e and 3e of the cover 3, so that the contact ribs 3e and 3e are moved when the operation handle 19 is swung. It is preferable not to interfere with the handle cover 21. Further, by providing such abutting ribs 3e, 3e, the handle cover 21 is placed on the rear wall side when the switch device 1 is attached to the mounting frame, compared to the case where the abutting ribs 3e, 3e are not provided. Therefore, the gap between the cover 3 and the handle cover 21 can be made difficult to see from the outside.

  The operation handle 19 is made of a synthetic resin molded product, and has a rectangular parallelepiped box shape having a rear wall that opens over the entire surface and is swingable within the operation handle hole 3a. . On the other end side of the front wall of the operation handle 19 (on the right side in FIG. 2), a light passage hole 19a that passes through the front and back of the front wall and allows the light emitted from the light emitting means 8 to pass therethrough is formed. Further, a pair of locking claws 19 b and 19 b that are spaced apart in the short direction of the operation handle 19 project from the front end portion of the side surface on the other end side in the longitudinal direction of the operation handle 19. In addition, a convex rocking shaft portion 19 c that follows the front and rear of the operation handle 19 is provided at the center of both side surfaces of the operation handle 19 in the short direction. The swing shaft portion 19c is formed so as to be narrower than the bearing portion 17 of the cover 3, and is formed so that the front end portion is tapered. From the rear surface of the front wall of the operation handle 19, an elastic body holding portion 20 having a cylindrical shape and holding the front end portion of the elastic body 16, which is a coil spring, for example, is provided in the cylinder.

  The operation handle 19 is inserted into the operation handle hole 3a from the rear of the cover 3 so that the swing shaft portions 19c and 19c correspond to the bearing portions 17 and 17 of the cover 3, respectively. It is equipped. In this manner, the operation handle 19 provided in the cover 3 is pivotally supported so that the swing shaft portions 19 c and 19 c can swing in the longitudinal direction of the cover 3 by the bearing portions 17 and 17 of the cover 3. A protrusion projecting sideways is provided on either one of the swing shaft portions 19c, 19c, and a portion for locking the protrusion is provided on the bearing portion 17 corresponding to the swing shaft portion 19c provided with the protrusion. In this case, it is possible to prevent the operation handle 19 from falling off the cover 3 when the operation handle 19 is operated.

  By the way, the switch device 1 of the present invention is a so-called scar switch, and includes a light emitting display block 11 that emits light outward from the body. The light emitting display block 11 is composed of a display lamp such as a neon lamp and a resistor, and is mounted with light emitting means 8 and electronic parts that emit light by electrically connecting both ends to a power source. A light emitting display circuit board (hereinafter abbreviated as a circuit board) 10 having a circular mounting hole 10a into which the portion 20 is inserted, and leads mounted on the circuit board 10 and electrically connected to one end of the light emitting means 8. Line 9 and a contact terminal (not shown) provided on the back surface of circuit board 10 and electrically connected to the other end of light emitting means 8 are provided.

  The light emitting display block 11 is arranged in the operation handle 19 as follows and is housed in the container. That is, the light emitting display block 11 is disposed in the operation handle 19 with the light emitting means 8 corresponding to the light passage hole 19a of the operation handle 19 and the elastic body holding portion 20 fitted in the mounting hole 10a. is there. When the cover 3 is attached to the body 2, the lead wire 9 is welded and fixed to the lead wire connecting piece 5 a of the terminal plate 5 by spot welding, and the elastic piece 15 a of the contact 15 provided on the terminal plate 4 is connected to the circuit. It is electrically connected to the contact terminals of the substrate 10 by elastic contact. Thus, by storing the light emitting display block 11 in the container, an energization path including the terminal plate 4, the contact 15, the light emitting display block 11, the lead wire 9, and the terminal plate 5 is formed.

  Further, a handle cover 21 that covers the entire front wall of the operation handle 19 from the front wall side is attached to the operation handle 19 provided in the cover 3. The handle cover 21 is made of a synthetic resin molded product, and is formed in a thin rectangular parallelepiped box shape whose rear wall is opened over the entire surface. On the other end side (right side in FIG. 2) of the front wall of the handle cover 21, a display hole 21a penetrating the front and back of the front wall is formed. From the rear side of the front wall, as shown in FIG. 1, substantially L-shaped locking legs 21b for locking the locking claws 19b, 19b of the operation handle 19 are attached to the locking claws 19, 19, respectively. A presser protrusion 21 c that is provided correspondingly and that abuts against a corner on one end of the operation handle 19 is provided. In addition, a projection (not shown) for fixing the prism 22, which will be described later, is provided. Accordingly, the locking claw 19b of the operation handle 19 is locked to the locking leg 21b of the handle cover 21, and the corner on one end side of the operation handle 19 is brought into contact with the presser protrusion 21c of the handle cover 21, The operation handle 19 is held by the handle cover 21, whereby the handle cover 21 is attached to the operation handle 19. Further, the prism 22 for guiding the light of the light emitting means 8 that has passed through the light passage hole 19a of the operation handle 19 so as to be emitted from the display hole 21a is attached to the handle cover 21.

  The prism 22 is a molded product of a transparent synthetic resin as shown in FIG. 6A, for example. The light guide 23 guides the light from the light emitting means 8 to the display surface 23a, and the handle from the rear surface side of the handle cover 21. A rectangular plate-like attachment portion 24 for attachment to the cover 21 is integrally provided. The mounting portion 24 is opened, for example, in a circular shape, and mounting holes 24a and 24a (see FIG. 2) whose inner diameter gradually decreases from the front surface side to the rear surface side are formed, and the handle cover 21 is formed in the mounting holes 24a and 24a. The protrusion 22 is inserted, and the prism 22 is attached to the rear surface side of the handle cover 21. The light guide 23 is a first reflection having an incident surface 23b on which light from the light emitting means 8 is incident and a surface adjacent to the incident surface 23b and having an angle of about 45 degrees with respect to the incident surface 23a. A surface 23c, a second reflecting surface 23d that receives light reflected by the first reflecting surface 23c and reflects it to the display surface 23a, and a display surface 23a for emitting the light to the outside of the prism 22. It has. Here, the first reflecting surface 23c is formed in a curved shape that bulges outward from the prism 22, and according to the first reflecting surface 23c, the light incident from the incident surface 23b is second reflected. The light can be condensed onto the surface 23d. The second reflecting surface 23d is formed in a curved shape that is recessed inward of the prism 22, and the light reflected by the first reflecting surface 23c can be diverged to the display surface 23a. Thereby, the entire display surface 23a can be illuminated. On the other hand, as shown in FIG. 6B, the second reflecting surface 23d may be a flat surface instead of the curved surface as described above, and in this case, the divergence of light by the second reflecting surface 23d is suppressed. However, since it is flat, there is an advantage that the manufacturing cost of the mold can be suppressed.

  Thus, the light incident on the prism 22 from the incident surface 23b is reflected by the first reflecting surface 23c toward the second reflecting surface 23d, and then is reflected by the second reflecting surface 23d toward the display surface 23a. The light is reflected and emitted from the display surface 23 a to the outside of the prism 22. Therefore, even if the light passage hole 19a of the operation handle 19 and the display hole 21a of the handle cover 21 do not overlap, the light that has passed through the light passage hole 19a by the prism 22 is displayed on the display hole 21a. It can lead to.

  The switch device 1 of the present invention is configured as described above, and the switch device 1 is assembled as follows. First, as described above, the terminal plate 4, the terminal plates 5 and 6, the four locking springs 13, and the two release buttons 14 having the contacts 15 caulked and fixed to the terminal plate storage portion 2a of the body 2 are provided. The quick connection terminals a, b, c, and d corresponding to the pair of power line insertion holes opened at the bottom of the terminal plate storage portion 2a are configured. At this time, as shown in FIG. 1, the terminal plate 5 to which the lead wire 9 is connected is disposed with a predetermined gap from the side surface 2i of the rib 2h which is the inner wall surface of the terminal plate storage portion 2a. A space for storing the wire 9 is provided. The surface 5f of the lead wire connecting piece 5a and the side surface 2i of the rib 2h form an angle of about 45 degrees. Then, the opening / closing body 7 is mounted on the mounting piece 6a of the terminal board 6, and the protruding piece 7d of the opening / closing body 7 is inserted into the V-shaped groove of the regulating rib (not shown). Next, the elastic body holding part 20 of the operation handle 19 is fitted into the mounting hole 10a of the light emitting display block 11, and the light emitting means 8 is made to face the light passage hole 19a of the operation handle 19 to operate the light emitting display block 11. After being disposed in the handle 19, the operation handle 19 is inserted into the operation handle hole 3 a of the cover 3, and the swinging shaft portions 19 c and 19 c are pivotally supported by the bearing portions 17 and 17 so that the operation handle 19 is covered with the cover 3. To be swingable. Thereafter, as shown in FIG. 7A, the lead wire 9 is placed on the surface 5f of the lead wire connecting piece 5a of the terminal plate 5, and the electrodes 26, 26 are sandwiched between the front and back surfaces of the lead wire connecting piece 5a. And spot welding. At this time, since the lead wire connecting piece 5a is inclined with respect to the side piece portion 5b, it is easily sandwiched between the electrodes 26 and 26. And the elastic piece 15a of the contact 15 provided in the terminal board 4 is elastically contacted with the said contact terminal of the circuit board 10, and is electrically connected. Next, the cover 3 is attached to the body 2 with the front end portion of the elastic body 16 held in the elastic body holding portion 20 and the rear end portion brought into contact with the front portion 7 b of the opening / closing body 7. At this time, as shown in FIGS. 5 (b) and 5 (c), the locking projections 12 of the body 2 are locked in the locking holes 3 c of the cover 3, and the cover 3 is attached and fixed to the body 2. Then, after attaching the prism 22 from the rear side of the handle cover 21, the handle cover 21 is attached to the operation handle 19. As described above, the switch device 1 is completed as shown in FIGS.

  In the switch device 1, the lead wire 9 can be bent and housed in a circular arc that is gently and gently bent as shown in FIG. 1, so that no excessive stress is generated on the lead wire 9. This will be described in detail below. One end of the lead wire 9 is welded and fixed to the surface 5f of the lead wire connecting piece 5a, the other end is connected to the circuit board 10, and in addition, the terminal board 5 is located behind the body of the circuit board 10 as shown in FIG. Therefore, the lead wire connecting piece 5a is accommodated in the gap between the terminal plate 5 and the rib 2h. The lead wire connecting piece 5a has a surface 5f and a side surface 2i of the rib 2h of about 45 as described above. Since it is arranged so as to form an angle of degrees, as shown in FIG. 7B, a sufficient space for bending the lead wire 9 can be obtained in the gap between the terminal plate 5 and the rib 2h. Further, it is not necessary to bend the lead wire 9 excessively. Therefore, the lead wire 9 can be uniformly and gently bent as shown by the broken line indicated by C in FIG. 7B, whereby the lead wire 9 is placed in the switch device 1 as shown in FIG. It can be stored. Further, since the lead wire 9 housed in this way does not have a portion where the bending is strong and the stress is likely to occur, the bending of the circuit board 10 during the switch operation does not cause an excessive bending. .

  Next, operation | movement of the switch apparatus 1 is demonstrated easily using FIG. Here, the side (right side in FIG. 1) provided with the terminal plate 6 in the switch device 1 is referred to as the right end side, and the side provided with the terminal plate 5 (left side in FIG. 1) is referred to as the left end side. As shown in FIG. 1, when the right end side of the operation handle 19 is located behind the left end side (downward in FIG. 1), the movable contact 7a comes into contact with the fixed contact 4a so that the energization between the terminal plates 4 and 6 is turned on. It is. At this time, the intermediate part of the elastic body 16 swells to the left end side from both end parts, and the movable contact 7a presses the fixed contact 4a by the elastic body 16, and contact pressure is applied. If the left end side of the operating handle 19 is pressed from this state so that the left end side of the operating handle 19 is positioned behind the right end side, the front end of the elastic body 16 moves to the right end side. The elastic body 16 is once compressed and then rapidly expanded, so that the intermediate portion swells to the right end side relative to the both end portions, and the opening / closing body 7 is tilted to the right end side. Along with this, the movable contact 7a is separated from the fixed contact 4a, and the energization between the terminal plates 4 and 6 is turned off.

  A wiring method and operation with the power supply 27 and the load 28 when the switch device 1 is actually used will be described with reference to FIG.

  The switch device 1 includes the quick connection terminals a, b, c, and d for connecting the power supply lines as described above. The quick connection terminal a is electrically connected to the terminal plate 4, and the quick connection terminal b is The terminal board 5 is electrically connected, and the quick connection terminals c and d are electrically connected to the terminal board 6. The power source 27 is an AC power source having a plus side terminal and a minus side terminal, and the load 28 is a lighting device having, for example, a fluorescent lamp having a plus side terminal and a minus side terminal. These are electrically connected as follows using power supply lines L1 to L4. That is, the positive terminal of the power source 27 and the quick connection terminal c of the switch device 1 are connected by the power line L1, and the negative terminal of the power source 27 and the negative terminal of the load 28 are connected by the power line L2. Further, the positive terminal of the load 28 and the quick connection terminal a of the switch device 1 are connected by the power supply line L3, and the other end of the power supply line L4 having one end connected to the power supply line L2 is connected to the quick connection terminal b of the switch device 2. To do. The quick connection terminal d is used for power supply.

  Next, the operation of the switch device 1 will be described. First, when the switch mechanism S is OFF, since no current flows through the light emitting display block 11, the light emitting means 8 of the light emitting display block 11 is turned off. When the switch mechanism S is turned on and the terminal plates 4 and 6 are energized, the power supply 27> power supply line L1> fast connection terminal c> switch mechanism S> fast connection terminal a> power supply line L3> load 28> power supply line L2. > Since an energization path composed of the power source 27 is formed, a current flows through the load 28 and the load 28 is lit. At the same time, an energization path is formed of power supply 27> power supply line L1> fast connection terminal c> switch mechanism S> light emitting display block 11> fast connection terminal b> power supply line L4> power supply line L2> power supply 27. Since a current flows through the light emitting display block 11 and the power source is connected to both ends of the light emitting means 8, the light emitting means 8 is turned on. As described above, when the switch mechanism S is turned on, the switch device 1 supplies current to the load 28 and the light emitting display block 11, and the load 28 and the light emitting display block 11 are connected in parallel. Regardless of lighting / extinguishing, if the switch mechanism S is on, the light emitting means 8 of the light emitting display block 11 is turned on.

According to the switch device 1 of the present invention, the surface 5f of the lead wire connecting piece 5a that inclines toward the bottom surface of the terminal plate storage portion 2a and protrudes toward the side surface 2i of the rib 2h that is the inner wall surface of the terminal plate storage portion 2a. Since the lead wire 9 is fixed by welding, a sufficient space for bending the lead wire 9 can be obtained in the gap between the terminal plate 5 and the side surface 2i of the rib 2h. No need to bend. Therefore, since the lead wire 9 can be uniformly and gently bent, a portion of the lead wire 9 that is strongly bent is not generated, and excessive stress is not applied to the lead wire 9. Thereby, the stress applied to the lead wire 9 is reduced, and the disconnection of the lead wire 9 is prevented. In addition, since the lead wire connecting piece 5a is provided so as to be inclined, there is no need to increase the size of the switch device 1, and in addition, the terminal board 5 can be easily taken and parts can be easily processed. be able to. Further, since the lead wire connecting piece 5a is inclined from the side piece portion 5b facing the side surface 2i of the rib 2h of the terminal plate 5, when the lead wire 9 is spot-welded, for example, it is sandwiched between the electrodes 26 and 26. Becomes easier. Therefore, the workability of the welding work of the lead wire 9 can be improved. Further, if the lead wire connecting piece 5a is formed so that the distal end side is wider than the proximal end side, spot welding or the like is facilitated, so the workability of the lead wire welding work is further improved. it can.

It is principal part sectional drawing of the switch apparatus of this invention. It is a disassembled perspective view of the switch apparatus of this invention. (A) is a front view which shows the terminal board to which a lead wire is connected, (b) is a side view of a terminal board same as the above, (c) is a side view from the other of the terminal board same as the above. It is. (A) is a perspective view of a terminal board same as the above, and (b) is a perspective view showing a state where a lead wire is connected to the terminal board same as the above. (A) is a front view of the switch apparatus of this invention, (b) is a side view of a switch apparatus same as the above, (c) is a side view from the other side of the switch apparatus same as the above. (A) is sectional drawing of the prism comprised in the switch apparatus of this invention, (b) is sectional drawing of the other prism same as the above. (A) is a schematic explanatory drawing which shows a lead wire and a terminal board at the time of lead wire welding, (b) is a schematic explanation which shows the accommodation state in the switch apparatus of the same terminal board to which the lead wire was connected. FIG. It is a wiring diagram at the time of using the switch apparatus of this invention. (A) is a perspective view of the terminal board with which the conventional switch apparatus is equipped, (b) is schematic description which shows the accommodation state in the switch apparatus of the other conventional terminal board to which the lead wire was connected. (C) is a schematic explanatory drawing which shows the accommodation state in the switch apparatus of the other further conventional terminal board to which the lead wire was connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch apparatus 2 Body 2a Terminal board accommodating part 2h Rib 2i Side surface 3 Cover 3a Operation handle hole part 3e Contact rib 5 Terminal board 5a Lead wire connection piece 5b, 5c Side piece part 5d Connection part 5e Drooping piece 5f Surface 6 Terminal board 6b connecting piece 9 lead wire 10 light emitting display circuit board 11 light emitting display block 13 locking spring 13a contact portion 13c connecting portion 15 contact 15a elastic piece 15b base 18 mounting claw 19 operation handle 19b locking claw 19c swinging shaft portion 21 Handle cover 21b Locking leg 21c Presser protrusion 22 Prism 23 Light guide section 25 Strip gauge

Claims (2)

A container having a terminal plate housing portion formed therein, at least two terminal plates housed in the terminal plate housing portion and connected to a power supply line, and a switch mechanism for turning on / off current between the terminal plates; The light emitting means is electrically connected to at least one of the terminal plates with a lead wire, and a power source is electrically connected to both ends of the light emitting means to cause the light emitting means to emit light so that light is emitted to the outside of the body. A light emitting display block that emits light,
The terminal plate to which the lead wire is connected is disposed with a gap from the inner wall surface of the terminal plate housing portion, and is inclined from the portion facing the inner wall surface toward the bottom surface of the terminal plate housing portion. A switch device comprising: a lead wire connecting piece projecting integrally on the inner wall surface side, and the lead wire being welded and fixed to the surface of the lead wire connecting piece. 2. The switch device according to claim 1, wherein the lead wire connecting piece is formed in a shape in which a distal end side is wider than a proximal end side.

Images