KR970003732Y1 - Rotary switch - Google Patents

Abstract

None.

Description

Multi Stage Rotary Switch

1 is a cross-sectional view showing an embodiment of the present invention.

2 is a cross-sectional view taken along line A-A of FIG.

Figure 3 is a side view showing an example of the rotary operation knob used in the embodiment of the present invention.

4 is a plan view for explaining an example of a rotary switch welding point used in the embodiment of the present invention.

Figure 5 is a perspective view for explaining the structure of the slide support plate and the support piece used in the embodiment of the present invention.

6 is a plan view for explaining the relationship between the rotation operation knob and the spring used in the embodiment of the present invention.

7 is a cross-sectional view for explaining the conventional technology.

* Explanation of symbols for main parts of the drawings

15 case 21: first operation knob

22: 2nd operation handle 23: 3rd operation handle

24: printed wiring board 26A, 26B, 26C: switch welding point

27A, 27B, 27C: Switch welding point 28A, 28B, 28C: Switch welding point

29: fixed shaft 31: spring

33, 34: rotating shaft 35: support piece

36: shaft 37, 38, 39: sliding support plate

37D, 38D, 39D: sliding piece 41: pin

The present invention relates to a multi-stage rotary switch that can be used as, for example, various controllers for automobiles.

When the driver controls the various devices (audio machine, air conditioner, etc.) by himself / herself while driving a vehicle, various operations are performed by groping with his hands without removing his eyes from the front. In this case, when the push button type is adopted, it is difficult to recognize by hand the function position of the push button. Also, while you are touching by hand, you may accidentally press a button that is not intended.

On the other hand, if the operation type of the multi-stage rotary knob is adopted, the position of the knob is easy to understand even if it is fumbled by hand, and the target control can be surely performed.

In addition, according to the rotary handle operation method, there is no fear that wrong operation is performed simply by touching. That is, since the operation is not performed unless the rotation operation is performed, the rate at which an operation not intended is performed can be reduced.

From this point of view, the multi-stage rotary switch tends to be used as a vehicle-mounted controller.

7 shows the structure of a conventional multi-stage rotary switch. Conventionally, each rotary switch (1), (2), (3) is arranged in a multi-stage stack, each operation shaft (4), (5), of each rotary switch (1), (2), (3), (6) is taken out in a multi-axis structure, and operation knobs (7), (8), and (9) are mounted at the ends of each operation shaft (4), (5), and (6), and these operation knobs (7) ), (8) and (9) operate each rotary switch (1), (2) and (3).

The electrical contact signals of the rotary switches 1, 2, and 3 are led out by the wiring boards 11, 12, and 13, and are connected to the main wiring board 14. The main wiring board 14 and the rotary switches 1, 2, and 3 are housed in the case 15, and the lead wire 16 drawn from the main wiring board 14 is connected to the controlled device. Therefore, the case 15 can be moved to an arbitrary position in the vehicle compartment within the allowable range of the lead wire 16, for example, placed next to the driver to control various devices.

In the conventional multi-stage rotary switch, as shown in Fig. 7, the plurality of rotary switches 1, 2, and 3 are piled up, so that the thickness of the case 15 becomes large. In addition, this type of rotary switch can be rotated by the biasing force of the spring even when the operation knobs (7), (8) and (9) are rotated in either the clockwise or counterclockwise directions. And to return to position. That is, it rotates clockwise and counterclockwise around a certain rotational position and sends a contact signal when the amount of rotation reaches the prescribed rotational amount, for example, about 20 °, and the controlled device is controlled by the contact signal. The control is carried out so that the state of? Is changed by one step in the fleece direction or the minus direction. That is, for example, when the knob 9 is rotated in the clockwise direction by a prescribed amount rotation operation, one contact signal is output, and the volume is changed by one step in the positive direction by the contact signal. On the contrary, when the knob 9 is controlled to rotate in the counterclockwise direction, one other contact signal is transmitted, and the volume is changed in the negative direction by one step by the contact signal, and this is repeated. The volume can be controlled in the direction of decreasing gradually. If the hand 9 is released in the state where the handle 9 is rotated, the handle 9 is returned to its original position by the biasing force of the spring.

In this way, springs for providing convenience to the handles 7, 8, and 9 are incorporated in the rotary switches 1, 2, and 3, so that each rotary switch 1, ( It becomes relatively large by each thickness of 2) and (3). As a result, the present situation is that the thickness of the case 15 must be large.

It is an object of the present invention to provide a multistage rotary switch of this kind which can reduce the thickness of the case 15.

According to the present invention for achieving the above object, a switch welding point is formed concentrically on one printed wiring board, and a plurality of rotary switches are formed on one printed wiring board to reduce the thickness of the case.

For this reason, the case is supported by multiple rotary shafts, and the sliding contact piece which slides in the switch welding point arrange | positioned at the centrifugal circle shape by this multiple rotary layer is rotated. At the same time, a part of the multi-rotation shaft, i.e., the smallest diameter of the cylindrical rotation shaft, is a fixed shaft, and the spring is mounted on the fixed shaft, and the biasing force in the direction of returning it to its original position to the uppermost handle and the handle below it. It is to be given a structure that gives. In other words, the present invention is characterized in that the structure for the drum ear spring at the position of each handle, thereby making the thickness of the case even thinner.

Hereinafter, an embodiment of a multistage rotary switch according to the present invention will be described in detail with reference to FIGS. 1 to 6. 15, the figure shows a case.

On the upper part of the case 15, the first pivotal operation knob 21, the second pivotal operation knob 22, and the third pivotal operation knob 23 are rotatably supported. On each circumferential surface of each of the rotation operation knobs 21, 22, and 23, surfaces 21A, 22A, and 23A for changing the hand feel are formed as shown in FIG. have.

The above-described structure of the present invention arranges one printed wiring board 24 inside the case 15, and concentric circles as shown in FIG. 4 on the upper surface of the printed wiring board 24. A plurality of switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C, which are arranged in a shape, each of which is divided into a plurality in the circumferential direction, are disposed and disposed The switch welding points 26A, 26B, 26C, (27A, 27B, 27C) and (28A, 28B, 28C) constitute a plurality of rotary switches on the same plane, and the switch contacts 26A, 26B, 26C), (27A, 27B, 27C) and (28A, 28B, 28C) are provided so that the fixed shaft cylinder 29 is provided, and the first shaft operation knob 21 and the first by the fixed shaft cylinder (29) This is a structure in which the pivot reference point is given to the two-turn operation knob 22.

That is, two springs 31 are supported on the fixed shaft cylinder 29, and the springs 31 provide elastic biasing force to both the first and second pivotal operation knobs 22 and 22. It is configured to return to the reference point even if it is rotated in either of the clockwise and counterclockwise directions.

In this way, a plurality of switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C of one printed wiring board 24 are formed and deposited on each rotary switch. The case 15 can be made thin by the structure in which the spring giving the returning force is distributed and disposed on the side of the pivot operation knob, and the overall size can be made small.

The structure of each part is demonstrated in more detail below. Through-holes in the ceiling surface of the case 15 facing the centers of the switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C formed on the printed circuit board 24. To form. Cylindrical boss 15A is projected upward at the periphery of the through hole, and the pivot shafts 33 and 34 are beared by the boss 15A. Each of the second rotation operation knob 22 and the third rotation operation knob 23 is integrally formed in these rotation shaft cylinders 33 and 34. The fixed shaft 29 is disposed inside the rotating shaft 33. In this example, the fixed shaft cylinder 29 is supported by the support piece 35 sandwiched inside the case 15 and fixed in the rotational direction. The support piece 35 is formed in the shape as shown in FIG. 5, and the click 35A is formed in the both ends of the shape, and this click 35A hangs in the hole 15B formed in the case 15. Are supported. A pair of engaging pieces 35B is formed on the bottom surface side of the supporting piece 35, and the first sliding member support plate 37 rotates on the engaging piece 35B by means of the first rotating operation knob 21. ). That is, the shaft 36 is integrally molded to the shaft center of the first pivotal operation knob 21. The shaft 36 penetrates through the support piece 35 through the hollow hole of the fixed shaft cylinder 29, and a footnote portion formed at the tip portion thereof is engaged with the first slide support plate 37, and the first rotation is performed. The operation handle 21 and the first sliding member support plate 37 are pivotally coupled to each other, and the first sliding member 37 is pivotally operated. A hole is formed in the upper part of the circumference part formed in the lower end part of the shaft 36, and the pin 41 for a fall prevention is engaged with this hole. The first pivotal operation knob 21 is prevented from being pulled out by engaging the pin 41, and the second pivotal operation knob 22 and the third pivotal operation knob 23 are prevented from being pulled out by the pinch prevention. .

The second slide support plate 38 and the third slide support plate 39 are mounted to respective lower ends of the pivot shafts 33 and 34. Since the first slide support plate 37 to the third slide support plate 39 have the same shape except for the different sizes, the third slide support plate 39 will be described with reference to FIG. The plate portion is elliptical in shape, and a hole 39A is formed in the center to penetrate the pivot shaft 33. The protrusions formed on the lower end of the rotating shaft barrel 34 are engaged to engage the rotating shaft barrel 34 and the third slide support plate 39 in the rotating direction. The support piece 35 is disposed in a direction orthogonal to the long axis of the elliptical shape, and the second slide member support plate 38 and the third slide support plate 39 restrict the maximum angle of rotation by the support piece 35. Act as a stopper. In addition, the first sliding member support plate 37 is limited by the engaging piece 35B formed on the rear surface side of the supporting piece 35.

39C of protrusions are protruded downward at the both ends of the longitudinal direction of the slide support plate 39, and the slide 39D is attached to the lower end of this protrusion 39C. The slides 37D and 38D (see FIG. 2) are also mounted to the other slide support plates 37 and 38 by the same structure. These sliders 37D contact the switch welding points 26A, 26B and 26C at the innermost periphery formed on the printed wiring board 24, and 38D contact the switch welding points 27A, 27B and 27C. , The slider 39D contacts the switch welding points 28A, 28B and 28C, between the contact portions 26A and 26B and 26A and 26C, respectively, 27A and 27C. The contact signal is transmitted by folding between (28A) and (28B) and between (28A) and (28C), respectively. By setting the return positions of the respective sliders 37D, 38D, and 39D to approximately the centers of the switch welding points 26A, 27A, and 28A, the respective rotation operation knobs 21 and 22 are used. , 23 can be rotated in the clockwise and counterclockwise directions by almost the same amount to transmit the contact signal.

Projections 21A, 22A, and 23A (FIG. 1, FIG. 2) are projected on the inner circumference of each rotation operation knob 21, 22, and 23, and the projection ( 21A), (22A) and (23A) are engaged with the ends of the spring 31, and the respective rotation operation knobs 21, 22, and 23 are moved to a predetermined position by the biasing force of the spring 31. Keep elastic. An example of the structure is shown in FIG.

In FIG. 6, a part of the 1st rotation operation shaft 21 is shown. The end portion of the semi-circular jaw 29B spring 31 is engaged with the fixed shaft 29 by the core portion 29A supporting the spring 31 and slightly outside from the core portion 29A. . At this time, the spring 31 is already deformed to give a bias force in the direction of compressing the jaw 29B with respect to the jaw 29B. In other words, the pre-loud is placed in a state. By fitting each end of the spring 31 to the projection 21A formed inside the rotation manipulation knob 21, the biasing force of the spring 31 can be imparted to the rotation manipulation handle 21. When the rotation operation knob 21 is rotated in the clockwise direction in the state of FIG. 6, one end of the spring 31 is rotated by the projection 21A. At this time, since the other end of the spring 31 is stopped by being engaged with the end of the jaw 29B, the spring 31 is wound and accumulates a return force. When the hand is released from the first rotation operation knob 21, the first rotation operation knob 21 is returned to its original position. When the first rotation operation knob 21 is rotated in the counterclockwise direction, one end of the spring 31 is engaged with the projection 2 in the state shown in FIG. 6, and the first rotation operation knob 21 is Gather together. At this time, since the other end of the spring 31 is held in engagement with the jaw 29B, the bias force is accumulated in the spring 31 together with the rotation of the first rotation operation knob 21. Therefore, also in this case, when the hand is released, the first rotation operation knob 21 is returned to its original position. The return force is applied to the second rotation operation knob 22 and the third rotation operation knob 23 by the same structure.

In addition, a spring that imparts a return force to the third pivotal operation knob 23 is supported by a boch 15A protruding from the case 15.

In addition, in this embodiment, the button switch 42 which presses against the lower end of the shaft 36 is provided, and the said button switch 42 is turned ON and OFF by operating to push down the 1st rotation operation knob 21. As shown in FIG. If it is configured to do so, it is displayed. That is, for this purpose, the circumferential portion of the shaft 36, which is provided with a clearance in the vertical direction between the pin 41 and the engagement piece 35B, and is engaged with the first slide support plate 37, It is made larger than the thickness of the 1st sliding support plate 37 by the stroke, and is supporting so that the shaft 36 may move up and down.

In addition, the above embodiment has been described an embodiment in which the third rotational operation knob is installed, but the feature of the present invention is characterized by the structure of the point that gives the rotational reference position from the fixed shaft cylinder to the first and second rotational operation knobs. The third rotation operation knob 23 is not necessarily an element, but is provided in accordance with the control contents of the controlled device. However, when three or more types of control contents of the controlled device are provided, a plurality of fixed shaft cylinders 29 are provided, thereby adding a third turning operation knob to which the turning reference point is provided from the case 15 (2N + 1). It is possible to provide two rotary operation knobs, so that a multi-stage rotary switch capable of performing various types of control can be provided.

As described above, according to the present invention, a plurality of rotary switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C are formed on one printed wiring board 24. Since the plurality of rotary switches are formed on the printed wiring board 24, the thickness of the case 15 can be reduced. Moreover, since the spring 31 which gives a return force was distributed and provided in the position of each rotation operation knob 21, 22, 23, it does not lose space by spring arrangement. Therefore, it is possible to provide a multi-stage rotary switch that can be made compact in overall and easy to handle.

Claims (2)

A plurality of switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C, which are arranged in a concentric shape, each of which is divided into a plurality in the circumferential direction and formed on the printed wiring board 24. ) And the printed wiring board 24 having the switch welding point formed therein and facing the axis of the switch welding points 26A, 26B, 26C, 27A, 27B, 27C, and 28A, 28B, 28C. A case 15 having a through hole formed at a position; a fixed shaft cylinder 29 derived from the case 15 through the through hole; and a case 15 through the hollow shaft hole of the fixed shaft cylinder 29. The first turning operation knob 21 is mounted at the outer end of the head), mounted at the inner end of the case 15, and the innermost contacts 26A, 26B, and 26C of the switch contact point. A rotating shaft 36 on which the first sliding member support plate 37 which supports the sliding member 37D for electrically folding the contacts divided by contacting with each other is mounted; A pivot shaft 33 pivotally engaged on the outer periphery of the barrel 29, and a second pivotal operation knob mounted on the outer end of the case 15 of the pivot shaft 33 ( 22) and a slide 38D mounted on an inner end of the case 15 of the pivot shaft 33 and electrically contacting the switch welding points 27A, 27B, and 27C. A spring which is supported by one second sliding support plate 38 and the fixed shaft cylinder 29, and returns each of the first pivotal operation knob 21 and the second pivotal operation knob 22 to a predetermined rotational position. Multi-stage rotary switch, characterized in that composed by (31). A second pivot shaft 34 is provided on the outside of the pivot shaft 3 #, and a third pivot handle 23 and a third slide support plate 39 are attached to the second pivot shaft 34. FIG. And a third rotary switch to form a third rotary switch, and a spring 31 mounted on the case 15 to return the third rotary operation knob 23 to the predetermined rotational position.