JPH0343624Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Technical Field] This invention relates to a terminal device applied to a pull switch of a lighting device, etc. [Background technology] Conventionally, there have been terminal fixing devices (for example, Utility Model Publication No. 12513/1983) in which the terminal board was fixed to the body by attaching a cover to the body, and terminal fixing devices in which the terminal board was fixed to the body by fixing the contacts to the base. A terminal fixing device that fixes the terminal to the base (for example,
No. 12735 has arrived. However, all of them had the disadvantage that the terminal board was not easy to attach. Also, when providing contacts on the terminal board and connecting the lead wires by soldering,
The drawback was that the solder flux spread and adhered to the surface of the contacts. [Purpose of the invention] The purpose of this invention is to provide a device that has contacts on the terminal board and connects the lead wires by soldering, which makes it easy to install the terminal board and prevents flux from adhering to the surface of the contacts. The purpose of the present invention is to provide a terminal device that can be used. [Disclosure of the invention] In this invention, one end of the intermediate part is formed wide, and the end of the wide part opposite to the one end is a locking step, and a contact is provided on the one end, and the other end is wide. A terminal board having a soldering portion on one side thereof, and a through hole passing through the other end of the terminal board and locking the locking stage to the edge, and supporting both sides of the one end and supporting the terminal board. a base having a guide groove with a gap large enough to cause a capillary phenomenon between the surfaces of both sides; The bent part that is fixed and locked is bent. According to the configuration of this invention, the terminal board can be easily fixed to the base by passing the terminal board through the guide groove, penetrating the through hole, and caulking the bent portion. Furthermore, when soldering lead wires, the solder flux flows through the through hole in the base to the contact side, but due to capillary action it flows into the guide grooves that have a gap large enough to cause capillary action on both sides of the contact. It is possible to prevent flux from spreading. Further, since the terminal plate is also supported by the guide groove, the terminal plate has high strength against contact pressure when the movable contact facing the contact contacts the contact. A pull switch to which an embodiment of this invention is applied is shown in FIGS. 1 to 11. That is, the body 1 is box-shaped and has a hole (not shown) in the center of the bottom, and a ratchet 2 is integrally formed at the edge of the hole. The mandrel 3 is passed through the hole from the outside of the body 1, and the mandrel 3 is inserted into the hole from the outside of the body 1.
A locking collar 4 at the end of the hole locks into a recess (not shown) in the edge of the hole. A cam 5 is passed through the mandrel 3,
A ratchet 6 formed on the front end surface of the cam 5 meshes with a ratchet 2 of the body 1 in one direction. This cam 5
is molded from synthetic resin, has a through hole 5a in the center as shown in FIG. 5, and has two cam parts 7, 8 in the axial direction.
A ratchet 10 is also formed on the rear end surface, and a shallow fitting recess 11 is formed on the outer periphery of the ratchet 10 corresponding to the position of the toe. Further, the cam portions 7 and 8 are formed so that the approximate outer diameter of the cam portion 8 on the shaft end side is smaller than that of the cam portion 7 and forms a tapered staircase as shown in FIG. 6 when viewed from the side. The shape of each cam is as shown in FIG. 4, and is designed to satisfy the relationships described below. Furthermore, the outer periphery of the insulating collar 9 is in sliding contact with the inner surfaces 1a and 1b of the body 1. Next, the handle 12 is passed through the mandrel 3 and overlapped with the rear end surface of the cam 5. The handle 12 has an arm 14 extending in the radial direction from one side of the disc part 13, a mandrel insertion cylinder 15 is formed in the center of the disc part 13, and a pair of claws 16 are cut and raised around the insertion cylinder 15. death,
Further, a cut and raised piece 17 for hooking a spring and a convex portion 18 for fitting are formed. Also, one end ring 20 of the pull ring 19 is hooked into the hole at the tip of the arm 14, and the other end ring 20 is hooked onto the hole at the tip of the arm 14.
0' is drawn out from a hole (not shown) in the body 1. The direction in which the pawl 16 and the ratchet 10 of the cam 5 engage in one direction is opposite to the direction in which the cam 5 and the body 1 engage in one direction. A coil portion 22 of a torsion coil spring 21 is further passed through the mandrel 3, one end of the coil portion 22 is fitted into the insertion tube 15, and one end 2 of the torsion coil spring 21 is fitted into the insertion tube 15.
1a is engaged with the cut and raised piece 17. Furthermore, the central hole 24 of the mandrel support 23 is passed through the mandrel 3, and the torsion coil spring 21 is compressed in the axial direction.
The end of the mandrel 3 is caulked to the mandrel support 2.
Both ends of the body 1 are bent inward to form a groove 25 in the body 1.
Attach to the bottom of the and the other end 21 of the spring 21
b is bent and its own torsional action is caught on the side edge of the mandrel support 23. The opening of the body 1 is a cover 2.
6 and fixed with driving rivets 27. Due to the axial pressing action of the torsion coil spring 21, the pawl 16 of the handle 12 is pressed against the ratchet 10 of the cam 5, the protrusion 18 is elastically fitted into the recess 11, and the cam 5 is further pressed against the body 1, so that both are pressed together. The ratchets 2 and 6 are maintained in mesh. Further, due to the torsional action of the torsion coil spring 21, the handle 12 returns to its original position, and the arm 14 of the handle 12 is brought into contact with the inner surface 1a' of the body 1 and positioned.
Also, by fitting the handle 12 with the concave and convex portions 11 and 18 of the cam 5, the cam 5 is rotated in the return direction of the handle 12, and the cam 5 is positioned at a position where the ratchet 6 of the cam 5 always meshes with the ratchet 2 of the body 1. It will be done. Therefore, when the pull ring 19 is pulled, the handle 12 rotates and the pawl 16 engages with the ratchet 10 of the cam 5, causing the cam 5 to rotate. When the pull ring 19 is pulled by a predetermined amount, the latch 6 of the cam 5 slides the latch 2 of the body 1 in the opposite direction and moves to the next meshing position accompanied by a meshing sound. When the handle 12 is released in this state, the handle 12 and the cam 5
Although the cam 5 attempts to return to its original position using the uneven portions 11 and 18 of
Since the spring force exceeds the fitting force between the concavo-convex portions 11 and 18, the fitting is removed and only the handle 12 returns to its original position. Further, due to the above-described operation, if the pull ring 19 is pulled halfway, the cam 5 will return to its original position as the handle 12 returns. Now, a pair of movable springs 28 and 29 are connected to the cam portion 7,
The cam parts 7 and 8 are sandwiched between the cam parts 8 and 8, and are arranged parallel to each other and perpendicular to the direction of the pull ring 19, and their base ends are fixed to the terminals 30 and 31. is the bottom 1c of body 1
It is installed through the. The movable springs 28 and 29 are formed of leaf springs, and contact the cam parts 7 and 8, respectively, and the contact part is a part near the free end and is in line contact with the contact rib 32 over the contact range, and the tip Movable contacts 33 to 36 made of a material with high welding resistance, such as bismuth-containing silver contacts, are fixed to both sides of the part. Also, a movable spring 28 that comes into contact with the cam part 7
As shown in FIG. 7, the base end of the movable spring 29 has a Z-shaped plane and is located close to the bottom 1c of the body 1, and is spaced from the handle 12 by a distance S that is approximately equal to the base end of the movable spring 29. On the other hand, the movable contacts 33 of each movable spring 28, 29
36, a pair of fixed contacts 37 to 4, respectively.
0 are arranged, and these are all fixed to terminals 41 to 44 provided through the bottom 1c of the body 1. In this case, the terminals 29, 30, 41-44 are arranged in a distributed manner and exposed on the bottom 1c as shown in FIG. Also fixed contact 3
7 to 40, the fixed contacts 38, 39 are connected to the fixed contacts 37, 39 due to the spring action of the movable springs 28, 29.
40 come into contact with each other under the force of the cam 5. Further, as a factor determining the shape of the cam portions 7, 8 (FIG. 4), a shape is selected so that the rotation of the cam portions 7, 8 makes contact with only one of the movable springs 28, 29. As shown in FIGS. 9 and 10, the terminal device constituting the terminals 41 to 44 has a terminal plate through hole 45 formed in the bottom part 1c of the body serving as a terminal base,
A pair of support columns 46 and 47 are provided inside the bottom portion 1c on both sides of the through hole 45, and guide portions 48 and 49 are formed at intervals slightly wider than the width of the through hole 45.
A stepped portion 50 is provided on the guide grooves 48 and 49 side that are the edges of 5.
is formed. The terminal board 51 has a middle part 52 that serves as a mounting part, one end part 53 that is wider than the middle part and has a contact, that is, a fixed contact (for example, 40) fixed in the center, and the other end part 54 that is narrower than the mounting part 52 and has a fixed contact fixed in the center. Lead wire soldering hole 55 which becomes the soldering part
is formed. This terminal plate 51 is passed through the through hole 45 from the inside of the bottom part 1c, and the locking step 56 at the boundary between the mounting part 52 and the one end part 53 is inserted into the step part 5 of the body 1.
0 (Fig. 9). At this time, the other end 54 side of the mounting portion 52 passes through the through hole 45 and protrudes by a predetermined amount. The stepped portion 52a, which is a bent portion at the boundary between the mounting portion 52 and the other end portion 54, is caulked and fixed to the through hole 45 as shown in FIG. Further, both sides of the one end 53 side having the fixed contact 40 are guided by guide grooves 48 and 49. Even if this terminal is soldered by passing the lead wire 57 through the lead wire soldering hole 55, the solder flux P (indicated by dots) will flow through the through hole 45 to the fixed contact 40 side.

[Effect of idea]

As described above, according to the terminal device of this invention,
The terminal board can be easily fixed to the base by passing the terminal board through the guide groove, penetrating the through hole, and caulking the bent portion. Furthermore, when soldering lead wires, the solder flux flows through the through hole in the base to the contact side, but due to capillary action it flows into the guide grooves that have a gap large enough to cause capillary action on both sides of the contact. It is possible to prevent flux from spreading. Furthermore, since the terminal plate is also supported by the guide groove, it has the effect of being strong against contact pressure when the movable contact facing the contact contacts the contact.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view of a pull switch to which an embodiment of this invention is applied, Fig. 2 is a sectional view taken along the - line, Fig. 3 is an exploded perspective view of the inside, and Fig. 4 is a view taken from the axial direction of the cam. Front view as seen, Figure 5 is a longitudinal cross-sectional view,
Fig. 6 is a reduced side view thereof, Figs. 7 and 8 are partial sectional views showing the movable spring, Fig. 9 is a sectional view of the terminal device, Fig. 10 is an exploded perspective view thereof, and Fig. 11 is It is a lighting circuit diagram of a fluorescent lamp. 1c...Bottom of the body serving as a base, 40...Fixed contact serving as a contact, 45...Through hole, 48, 49
... Guide groove, 50 ... Stepped portion serving as the edge of the through hole, 51 ... Terminal plate, 52 ... Intermediate portion, 52a ...
...Stepped portion serving as a bent portion, 53... One end portion, 54...
The other end, 55... lead wire soldering hole which becomes a soldering part, 56... locking stage.

Claims (1)

[Scope of utility model registration request] A terminal board in which one end side is formed wide with an intermediate part as a boundary, the end of the wide part opposite to the one end side is a locking step, a contact is provided at the one end side, and the other end is a soldering part. and a through hole that penetrates the other end of the terminal plate to lock the locking step to the edge, supports both sides of the one end, and has a capillary between the surfaces of the both sides. a base having a guide groove formed with a gap large enough to cause the phenomenon; Curved terminal device.