KR880004033Y1 - Switch - Google Patents

Abstract

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Description

Stopper of Rotary Drive Slide Switch

1 is an exploded perspective view of a rotary drive slide switch.

2 (a), 2 (b) and 2 (c) are views for explaining the assembly of the stepping member.

3 is a perspective view illustrating attaching a stepping member to a frame.

4 is a side cross-sectional view of the main part.

5 (a) and 5 (b) are front and side views of the rotary cam member.

6 (a) and 6 (b) are explanatory diagrams of the operation of the rotary cam member.

7 and 8 are perspective views illustrating the operation state of the stopper structure of the rotary drive slide switch of the present invention.

9 is a longitudinal sectional view of a main portion of a conventional rotary drive slide switch.

10 is a longitudinal sectional view of the conventional rotating cam portion shown in FIG.

11 is a front view showing a conventional rotating cam.

12 is a perspective view showing a conventional sliding body.

* Explanation of symbols for main parts of the drawings

1: frame 1a: viewpoint turning

1b: End projection 3: Shaft insertion hole

4: stopper piece 5: hole

6: support piece 7: shaft

8: attachment protrusion 9: cutout

10: rotary operation shaft 11: the operation portion

12: insertion portion 13: thin shaft portion

15: rotating cam member 15a: viewpoint stopper

15b ~ 15f: End stopper 16: Through hole

17: projection 20: sliding body

21: curved surface 22: cam groove

23: part 24: movable contact

26: stepping part 27: stepping projection

31: storing portion 32: projection

33: Attachment 36: Ball

37: coil spring 40: insulated substrate

41: fixed terminal 43: push nut

The present invention relates to the stop unfolding of the rotary drive slide switch in which the sliding body moves in a linear manner when the rotary operation shaft is rotated. The object of the present invention is to prevent the sliding of the sliding body so that a stable switch can be switched. At the same time, it is miniaturized to provide a stopper for a simple switch assembly.

The conventional rotary drive slide switch is mounted on the abdomen in the frame 53 to which the insulating substrate 52 with a plurality of fixed terminals 51 is fitted, as shown in FIGS. 9 to 12. The movable contact piece 55 which contacts the fixed terminal 51 in the part 54 is accommodated, and the sliding body 57 which protruded the cam part 56 at one end is tilted with a sliding material, and the front surface of the frame 53 is provided. Cylindrical shape in which the front plate 60 is attached and the cam portion 63 for theft is formed at the rear end of the rotary operation shaft 62 supported by the bearing 61 fixed to the front plate 60. The rotary cam 64 is attached, and as shown in FIG. 9 and FIG. 10, the steel balls 65 are inserted into the preservation portions provided in the front plate 60, and both ends of the steel balls 65 are framed. The cutting spring mechanism is formed by elastically contacting the cam portion 63 by the leaf spring 67 held on the engaging portion 66 provided on the side surface of the 53, and a plurality of projections are formed on the circumference of the rotary cam 64. 68 is radially protruded (see FIG. 11) and at the same time a plurality of cam grooves 70 are formed in the cam portion 56 of the sliding body 57 corresponding to each projection 68 (see FIG. 12) to rotate. When the rotary cam 64 is rotated by the operation shaft 62, Each projection 68 is sequentially engaged with the corresponding cam groove 70 by one stem of the tapping mechanism, and the sliding body 57 is moved in one of left and right directions in FIG. will be.

However, in the rotary drive slide switch of the above configuration, the cam portion 70 in which the cam groove 70 engaged with the protrusion 68 of the rotary cam 64 attached to the rotary operation shaft 62 protrudes at one end of the sliding body 57 ( 56) had the drawback of increasing the dimension in the longitudinal direction.

In addition, since the projection 68 of the rotary cam 64 is pushed by the side wall of the cam groove 70 by the rotation of the rotation operation shaft 62, the sliding body 57 is moved to one end side of the sliding body 57. Since a force is applied in a direction substantially perpendicular to the moving direction, the sliding body 57 is shifted left and right, and as a result, the sliding body 57 is moved. There is a problem that the movable contact piece 55 accommodated in the portion 54 is strongly pressed in only one direction of the fixed terminal 51, so that deformation occurs and a stable contact state cannot be obtained.

In view of the above drawbacks of the present invention, one embodiment of the present invention is described below with reference to FIGS.

1 is a frame formed by punching and bending a metal plate to form a box, and 1a and 1b are formed by protruding into the frame 1 on the side and upper surface of the frame 1, and in order to distinguish them functionally. And 1b are referred to as starting and ending projections, respectively.

The front plate 2 of the frame 1 has a shaft insertion hole 3, an upper surface thereof with a stopper piece 4 protruding inwardly, and a hole 5 which is bent at approximately right angles to the inside to face the shaft insertion hole 3, respectively. ) Is provided, and each of the side plates 7 has a mounting protrusion 8 for attaching a substrate to be described later and a cutout 9 for attaching a case for a stepping member to be described later. Form.

Denoted at 10 is a rotation operation shaft formed of a metal rod, and the rotation operation shaft 10 includes an operation portion 11, an insertion portion 12 having a non-circular cross section, a thin shaft portion 13 at the rear end, and the like.

15 is a rotary cam member formed of synthetic resin, and the rotary cam member 15 has a plurality of spirally arranged non-circular through-holes 16 through which the insertion portion 12 of the rotary operation shaft 10 is inserted into the outer circumference. Projections 17 are installed.

20 is a sliding body made of synthetic resin, and the sliding body 20 is provided with a curved piece 21 corresponding to the outer circumference of the rotary cam member 15 on the rear surface, and the curved surface 21 has a plurality of projections 17. The cam groove 22 is formed in which is engaged with the net. The abdomen of the sliding body 20 accommodates the movable contact piece 24. The part 23 is formed.

30 is a stepping member case molded of synthetic resin, and the stepping member case 30 has an accommodating part 31 for accommodating the ball 36 and the coil spring 37. The outer periphery is a projection for positioning and positioning. (32), (32) and the attachment piece 33 are formed.

The dimension of the insertion hole 34 on which the coil spring 37 and the ball 36 of this accommodating part 31 are inserted is a dimension slightly smaller than the outer diameter of the ball 36. 40 is an insulating substrate provided with a plurality of fixed terminals 41.

43 is a push nut which has a hole 44 at the center and forms a notch in the circumference of the hole 44, and the inner diameter of the hole 44 of this push nut 43 is a thin part of the rotary operation shaft 10. As shown in FIG. It is slightly smaller than the diameter of the shaft portion 13.

One end of the rotary cam member 15 is integrally formed with a stepping portion 26 in which the stepping protrusion 27 is disposed circumferentially.

5 is a view showing the rotation cam member 15 from the front immediately in the form of a stopper, in particular, 15a is a stopper at the bottom surface is a contact point in the drawing, the end point having a contact surface on the opposite side to all 15b ~ 15f It is a stopper, it is formed integrally with the cam member 15 by staggering stepwise on the circumferential surface corresponding to the projection 17, as shown in Fig. 5 (b), the stoppers 15b to 15f are sequentially It is formed to have its contact surface at positions of 30 °, 60 °, 90 °, 120 ° and 150 ° from the top.

In addition, the positional relationship between the projections 1a and 1b and the stoppers 15a to 15f formed inside the frame 1 is first formed at a position where the viewpoint stopper 15a abuts the viewpoint protrusion 1a on the side from the starting position. Although the end point projection 1b of the top part is formed in the position which abuts on any one of the end stoppers 15b-15f according to the rotation angle of the operation shaft 10. As shown in FIG.

Next, the assembly operation of the rotary drive slide switch of the present invention will be described. First, the rotary operation shaft 10 is inserted from the front plate 2 side, and the insertion portion 12 of the rotary operation shaft 10 is inserted into the through hole 16 of the cam member 15, and then the thin shaft portion 13 at the rear end thereof. ) Is inserted into the hole 5 of the support piece 6, and the rotary cam member 15 is attached to the frame 1 by rotating material by pressing the push nut 43.

Next, the coil spring 37 is first inserted into the accommodating portion 31 from the insertion hole 34 of the stepping member case 30, and then the ball 36 is press-fitted as shown in FIG. Since the dimension of the insertion hole 34 is smaller than the outer diameter of the ball 36, the ball 36 stored in the stepping member case 30 does not fall out and the second spring (c) always moves due to the movement of the coil spring 37. Is added upwards.

Attaching the stepping member consisting of the step 30 for the stepping member, the coil spring 37, the ball 36, etc. to the frame 1 to the cutout 9 as shown in FIG. , (9), and the ball 36 comes into contact with the stepping projection 27 of the step portion 26 (see Fig. 4).

Next, on the insulating substrate 40 on which the plurality of fixed terminals 41 are provided. The sliding body 20 which supported the movable contact piece 24 is mounted in the part 23, and each movable contact piece 24 clamps the corresponding fixed terminal 41. As shown in FIG.

Next, the combination 17 of the insulating substrate 40, the sliding body 20, the fixed terminal 41, and the movable contact piece 24 is inserted from the lower portion of the frame 1 so that the projection 17 of the rotary cam member 15 is inserted. Is positioned in the cam groove 22 of the sliding body 20 and the outer circumference of the rotating cam member 15 is brought into contact with the curved surface 21.

Thereafter, the assembly is completed by fixing the insulating substrate 40 to the frame 1 by inserting the attachment protrusion 8 of the frame 1.

Next, the operation outline of the rotary drive slide switch having the above-described structure will be described with reference to FIGS. 7 (a) and 7 (b). First, the projections 17 and 17 on the rear side of the rotary cam member 15 will be described. Is rotated clockwise in the state in which the cam groove 22 is engaged with the cam groove 22 (see also the seventh (a)), the stepping portion 26 and the rotating cam member 15 rotate to stepping portions 26. Stepping projection 27 moves the ball 36 against the force of the coil spring 37, the ball 36 proceeds one step beyond the stepping projection 27 and at the same time the rotating cam member ( 15) rotates. The projection 17 which engages the sliding body 20 with the cam groove 22 is changed, and the sliding body 20 moves in the direction of the arrow B by the engagement relationship between the projection 17 and the cam groove 22.

At this time, the movable contact piece 24 stored in the sliding member 20 moves together with the sliding member 20, and the fixed terminal 41 which is brought into contact with each other is changed to switch.

When the rotary operation shaft 10 is rotated by one step, the switches are sequentially converted in the same manner.

Next, the relationship between the stopper 15a.... 15f and the rotation angle of the present invention will be described with reference to FIG. 5 and FIG. The end projection 1b at the top of the frame 1 is now formed at a position corresponding to the first end stopper 15b as described above.

In this case, the AA section of FIG. 5 is shown in FIG. 6 (a), and the same view shows the start stopper 15a on the side of the starting protrusion 1a in the state in which the operation shaft 10 is completely rotated in the left direction. Receive When the operating shaft 10 is rotated in the right direction, it rotates by one step (by 30 °) and at the same time, the stopper 15b abuts on the top projection 1b and stops.

In the meantime, the movable contact piece 24 is converted from the fixed terminal 41 at the left end to the fixed terminal 41 in the immediate vicinity (this is called a one-contact conversion).

Next, for example, when the frame 1 in which the end projection 1b is formed at a position corresponding to the second end stopper 15c is used, the stopper 15c is rotated as shown in FIG. 5 (b). Since the angle is 60 °, that is, twice the stopper 15b, two-contact conversion is possible.

Similarly, when the frame 1 in which the end projections 1b are formed at positions corresponding to the stoppers 15d, 15e, or 15f in FIG. 5 (a) is used, respectively, three and four contacts are used. Alternatively, it is possible to configure a switch up to a five-point changeover. At this time, all of the frame 1 and the like use a common member and do not require any change in the structure.

7 (a) and 7 (b), the drawing shows an embodiment of three-contact conversion. In particular, the end projection 1b is able to contact the third end stopper 15d. It is formed at the position, and Fig. 7 (a) is the start state, and Fig. 7 (b) shows the end point state in which the stopper 15d is completely rotated in the right direction and abuts on the protrusion 1b.

FIG. 8 shows the configuration of the five-contact conversion, and shows the state in which the end stopper 15f of FIG. 5 abuts on the end projection 1b and stops by completely rotating the operation shaft 10 in the right direction.

As described above, the rotary drive slide switch of the present invention forms a cam groove on the curved surface of the rear surface of the sliding body to position a plurality of projections on the spiral of the outer circumference of the rotating cam member in the cam groove, and at the same time, The stopper is formed integrally with the outer circumference, and when the sliding body is driven, the sliding body is guided by the rotating cam member and proceeds straight without shifting from side to side to the sliding body. The conversion is performed in a secure state.

In addition, when manufacturing various models with different operating angles of rotation, that is, the number of change contact points, only the protruding position of the top part is used, and all other members can use a completely common bulge. Since it is a structure arrange | positioned on a row, it has a remarkable practical effect, such as the dimension of a sliding body moving direction being small.

Claims (1)

The box-shaped frame body 1, the sliding body 20 accommodated in the longitudinal direction of this frame body as a sliding material, the substantially cylindrical cylindrical cam member 15 supported by the frame body 1, and this rotary cam member The attached rotary operation shaft 10, the plurality of projections 17 arranged in a spiral formed on the outer circumference of the rotary cam member 15, and the projections 17 on the curved surface of the rear surface of the sliding body 20 In the rotary drive slide switch provided with a cam groove 22 to be engaged sequentially, the movable contact piece accommodated in the abdomen of the sliding body 20 can be moved on a fixed terminal provided on an insulating substrate, One start stopper 15a is formed on the outer circumferential surface of the rotary cam member 15, and a plurality of end stoppers are formed staggered in stair steps corresponding to each of the protrusions 17, and the frame 1 On the inner side of the seam stopper (15a) to form a viewpoint projection (1a) in contact with the position At the same time the stopper of the rotary drive of the slide switch by forming the end projection (1b) in a location that is accessible per any one of the end stopper the inside upper surface of the frame body (1) with features.