JPH0231709Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a terminal for a rotary selector switch.

To be more specific, this is a rotary selector switch in which a contact part is formed at the end of a group of terminals embedded in a housing formed by insert molding, and a click protrusion is transparently provided in a through hole provided in one of the terminals. Regarding terminals.

(Problems to be solved by prior art and invention) When the rotor of a rotary selector switch is rotated by a predetermined angle to bring the terminal and slider into contact, the slider rotates according to a preset angle. A conventional example of a so-called click mechanism, which generates a click sound for sensing the stepwise movement of the button, includes the structure shown in FIG. 7 attached hereto. When a protruding arm i made of an elastic body fixed to the outer periphery of the rotor a moves in the same direction within the housing d as the rotor a rotates, its end j touches the step K provided in the housing d. Since the contact occurs in stages, a clicking sound is generated due to the contact between the members j and k at that time. In order to rotate rotor a,
The rotor a is moved in a predetermined direction, for example, clockwise or counterclockwise, by inserting a driver or the like into a long groove l drilled in the end of the rotor a and indicating a predetermined direction. The rotation angle of the rotor a is determined by the arrow end o of l facing the symbol n provided on the outer circumferential cover m of the long groove l.
This can be determined by the location of

The above-mentioned conventional click mechanism has problems such as a complicated structure such as a protruding arm i and a stepped part k, which requires a complicated process to manufacture, and it is difficult to miniaturize the switch itself. I'm scoring points.

Next, one conventional example of a rotary selector switch has a plurality of contact parts whose legs can contact conductors provided on a circuit board of an insulating board embedded in a housing, and the head of this contact part is , is disposed on the lower surface of the rotor rotatably housed in the gap between the housing and the case, and can come into contact with a conductor pattern formed on the lower surface of the substrate that rotates as the rotor rotates. A group of terminals is connected to the conductor of the circuit board. As the rotor rotates, the terminal groups are energized and de-energized via the contact portions.

The structure of the contact portion is extremely complex, requires a complicated manufacturing process, and it is difficult to miniaturize the switch itself.

Therefore, the present invention has been devised for the purpose of solving the above-mentioned problems.

(Means and effects for solving the problem) In the present invention, a common terminal and a plurality of output terminals are provided oppositely on the bottom surface of a housing formed by insert molding, and the terminal group is arranged on the inside bottom surface of the housing. A through hole is formed in a part of the common terminal adjacent to the contact portion, and a protrusion that passes through the through hole is provided integrally with the inner bottom surface of the housing. .

The present invention has an extremely simple structure, does not require complicated manufacturing steps, and allows the switch itself to be miniaturized.

(Example) An example of the present invention will be described below with reference to the accompanying drawings.

First, we will explain the rotary selector switch as a whole, in which the terminal of the present invention is employed, in relation to the terminal of the present invention.

The pin terminal group of the rotary selector switch related to the present invention is formed by punching out a piece of metal in advance. Figure 6 illustrates the situation.
Output terminals 6, 8 and common terminal 1 are connected between two metal strips 4, 4 from the metal strip 2, and between these strip metal pieces 4, 4.
0 by punching out to face each other. The terminals 6, 8, and 10 are formed by punching multiple groups from the metal piece 2 in multiple series. Plated contact portions 6a, 8a, and 10a are formed at the ends of the output terminals 6 and 8 and the common terminal 10, respectively. Common terminal 1
A through hole 12 is formed in a position close to the zero-plated contact portion 10a, and a click protrusion 24a passing through the through hole is provided integrally with an inner bottom surface 20 of a housing 16, which will be described later. Further, 14 is a pilot hole provided in the metal piece 2, which is useful for positioning the metal piece 2 during work.

The housing 16 is formed by insert molding using a plastic material or the like so as to accommodate the terminal group configured as described above and to form a gap for accommodating a rotor 44, which will be described later.

In FIG. 1, the housing 16 has an annular edge 1
8, a bottom surface 20, and a stepped portion 22 provided between the edge 18 and the bottom surface 20, one side of the end of the pin terminal group 6, 8, 10 is embedded in this bottom surface 20,
Arrange so that other surfaces are exposed.

Further, in the through hole 12 of the common terminal 10, as already explained, there is provided a click protrusion 24a projecting from the bottom surface 20 of the housing 16, and another pair of click protrusions 24a are provided approximately symmetrically with respect to the common terminal 10. Projections 24b and 24c are provided to protrude from the bottom surface 20 of the housing 16. Further, a pair of substantially square stepped grooves 26, 26 are bored in the bottom surface 20 of the housing 16 on both sides of the contact portion 10a of the common terminal 10. Furthermore, a raised portion 28 is provided on the contact portion 8a of the output terminal 8, and includes a side wall 30a that is in contact with and forms a step with the contact portion 6a of the output terminal 6, and another side wall 30b that is formed symmetrically with this side wall 30a. A side wall 34a that contacts the side wall 34a to form a step, and a raised portion 32 having another side wall 34b formed symmetrically with the side wall 34a are provided to protrude from the housing 16, respectively. The ridges 28, 32 form part of a rotation stopping mechanism for the rotor 44, which will be described later, and cooperate with features provided on the rotor to help stop the rotation of the rotor.

Further, on both sides of the housing 16, the case 38 is engaged with a locking hole 40 of a cover case 38, which will be described later.
A protrusion 36 is provided to prevent the housing from falling out of the housing 16. A housing 16 is formed by insert molding, and the band-shaped metal piece 4 is cut off along with the terminal groups 6, 8, 10 from the rear metal piece 2 to form each terminal independently. Housing 16
A long groove 37 is bored in the outer bottom of the tube (FIG. 4).

The cover case 38 according to the present invention has a pair of locking holes 40 for housing and locking the protrusions 36 on both sides of the housing 18, and an annular hole 42 for housing the annular head 46 of the rotor 44.

When the rotor 44 is housed in the housing 16, a stepped edge 61 of the rotor 44, which will be described later, is slidably supported by the stepped portion 22 of the housing 16, and the annular head 46 is attached to the cover case 38. Annular hole 42
It is rotatably stored inside. Rotor annular head 46
Insert a driver etc. into the approximate center of the rotor 44.
A slit 48 for rotating is provided.

FIG. 5 shows a slider 50 provided on the lower surface of the rotor 44.
A stopper member and the like are illustrated as will be described later.

The bent head 51 of the slider 50 is fitted and fixed into a vertical square groove 52 formed on the lower surface of the rotor 44, and its curved legs 54 form two prongs 54a and 54b. When the rotor 44 is assembled to the housing 16, the two prongs 54a, 54b are the contact portions 6a, 8a, 10a of the terminal group embedded in the housing 16.
It is possible to contact each of them. Code 58 is rotor 4
4, this depression 58
A ridged portion 60 that is raised higher than the stepped edge portion 61 is formed on the outer periphery of the groove. A pair of substantially fan-shaped protruding walls 62a and 62b are provided on both left and right sides of the ridged portion 60 (as viewed in FIG. 5). Both walls of the projecting wall 62a have side walls 64a, 64b, and both walls of the other projecting wall 62b have side walls 66a, 66b, respectively.
A groove 68 that opens on three sides and can be engaged with the click protrusions 24a, 24b, and 24c described above is bored approximately in the center of the fan-shaped projecting wall portion 62a. Third
FIG. 4 shows a state in which the rotor 44 is rotatably housed in the gap formed by the cover case 38 and the housing 16.
8 and an annular step 70 on the upper surface of the rotor 44, an O-ring 72 is interposed between the rotor 44 and the annular step 70 to prevent foreign matter from entering the gap and to ensure smooth rotation of the rotor.

Next, the overall operation of the rotary selector switch incorporating the terminal of the present invention will be explained. When an operating member such as a driver is inserted into the slot 48 provided in the head of the rotor 44 and the rotor 44 is rotated, the slider 50 also rotates in the same direction, and the two prongs 54a and 54b of the leg 54 rotate. It slides on the inner bottom surface 20 of the housing 16. As shown in FIG. 4, before the rotor 44 starts rotating, the grooves 68 formed in the fan-shaped protruding wall portion 62a forming the end of the ridged portion 60 provided on the lower surface of the rotor 44 are , is engaged with a click protrusion 24a formed to protrude from the through hole 12 formed at the end of the common terminal 10. Now move the rotor 44 approximately to the left (counterclockwise as viewed in FIG. 1) about the common terminal 10.
When the rotor is rotated by 45 degrees, the fan-shaped protruding wall portion 62a of the rotor is also rotated by the same angle, so that the groove 68 is aligned with the click protrusion 24.
a, and is then fitted and locked to the next click protrusion 24b, and when the above-mentioned member engages, the state of stepwise rotation of the rotor can be sensed. At the same time, the side wall 64a of the fan-shaped projecting wall portion 62a is connected to the housing 16.
The side wall 3 of the raised portion 28 protrudes from the inner bottom surface 20 of the
Also, the side walls 66b of the fan-shaped projecting wall portion 62b abut against the side walls 34a of another raised portion 32 protruding from the inner bottom surface 20 of the housing 16, thereby stopping the rotation of the rotor 44 and regulating the rotation. will be done.

At this time, the two-pronged portion 54b of the leg portion of the slider 50 is connected to the contact portion 10a of the common terminal 10 and the other two-pronged portion 54a.
contact the contact portions 8a of the output terminal 8, so the common terminal 10 and the output terminal 8 are energized.

Furthermore, in the opposite way, the rotor 44 is connected to the common terminal 10.
When the rotor 44 rotates clockwise around the rotor 44, the groove 68 disengages from the click projection 24a and is then fitted and locked to another click projection 24c, and the side wall 66a of the fan-shaped protruding wall portion 62b of the rotor 44 is inserted into the housing. 1
The side wall 30a of the raised portion 28 from the inner bottom surface 20 of 6
Also, the side wall 64b of the fan-shaped protruding wall portion 62a is the side wall 3 of the raised portion 32 from the inner bottom surface 20 of the housing 16.
4b, the rotor 44 is stopped and its rotation is restricted. At this time, the slider 5
The two forked portions 54b of the leg portions of the common terminal 10 contact the contact portion 10a of the common terminal 10, and the two fork portions 54a contact the contact portion 6a of the output terminal 6, thereby connecting the common terminal 1.
0 and the output terminal 6 are energized.

In this embodiment, the rotation angle of the rotor 44 is
Although each related member is set to achieve an angle of 45°, it is of course possible to set this angle to a desired angle other than 45°.

A click protrusion 24a that passes through the through hole 12 of the common terminal 10 and is formed integrally with the inner bottom surface 20 of the housing 16, and a pair of other clicks protruding from the bottom surface 20 of the housing 16 approximately symmetrically with the common terminal 10 as the center. As the rotor 44 rotates, the protrusions 24b, 24c and the groove 68 formed in the fan-shaped protruding wall 62a of the ridged portion 60 of the rotor 44 engage and disengage, thereby preventing the rotor 44 from rotating in steps over time. When the click process is performed, the click protrusion 24a is inserted into the housing 16.
Since the protrusion is integrally formed with the protrusion, it will not fall out from the hole when an external force is applied, unlike the protrusion described in the conventional example.

(Effect) In the present invention, the click protrusion that is provided through the through hole of the common terminal is formed integrally with the housing, so as the rotor rotates, this protrusion and the ridged part of the rotor form a fan-like shape. When the grooves drilled in the protruding wall portion engage and disengage from each other, the protrusion does not fall out of the through hole, so the rotary selector
It is possible to prevent problems such as deterioration of switch performance.

Furthermore, since the contact portion of the present invention is formed at the end of the terminal, there is no need to provide a separate contact portion, and therefore, there is no need to provide a substrate with a conductor pattern or a circuit board with a conductor in order to contact the contact portion. , rotary
Useful for downsizing selector switches.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a housing formed in a terminal group according to the present invention. FIG. 2 is an enlarged plan view of an embodiment of a rotary selector switch incorporating the terminal of the present invention. FIG. 3 is a sectional view taken along the - line in FIG. 2. FIG. 4 is a sectional view taken along the - line in FIG. 2. FIG. 5 is a bottom view of the rotor. FIG. 6 is a plan view showing the process of forming a terminal group according to the present invention. FIG. 7 is a partially cutaway plan view illustrating a click mechanism of a conventional selector switch. 6, 8...Output terminal, 6a, 8a, 10a...
Contact part, 10... Common terminal, 12... Through hole,
16...Housing, 20...Inner bottom surface, 24
a, 24b, 24c...click protrusion, 38...
...Case, 44...Rotor, 50...Slider.

Claims (1)

[Claims for Utility Model Registration] 1. A rotor is rotatably housed in the gap formed by the housing and the case, and as the rotor rotates, the rotor is attached to the housing via a slider provided on the rotor. In a rotary selector switch that enables energization and de-energization between terminals, a common terminal and multiple output terminals are provided facing each other on the inner bottom surface of the housing formed by insert molding, and the portion of the common terminal located inside the housing. A terminal for a rotary selector switch, characterized in that a through hole is formed in the terminal, and a protrusion that passes through the through hole is provided integrally with the inner bottom surface of the housing. 2. The rotary rotary according to claim 1, wherein the end portions of the common terminal and the output terminal disposed on the inner bottom surface of the housing are formed as contact portions.
Selector switch terminal.