JPH054242Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a two-axis interlocking electric component such as a variable resistor equipped with a push-lock mechanism.

[Conventional example]

Conventionally, as a double-shaft friction mechanism, the
Disclosed in No. 32050.

FIG. 2 is a sectional view of the main part of the rotary volume device disclosed in this publication, and FIG.
In the cross-sectional view taken along line D, the cylindrical portion 2a of the knob 2 of the inner shaft 1
An engaging portion 3 is provided on the outer periphery of the inner shaft 1, and when the inner shaft 1 is pushed, the engaging portion 3 frictionally engages with the inner peripheral surface of the knob 5 of the outer shaft 4 to rotate the knob 2 or the knob 5. Therefore, the inner and outer shafts 1 and 4 rotate simultaneously.

[Problem that the invention attempts to solve]

It is conceivable to provide such a friction mechanism on the inner and outer shafts so that the inner and outer shafts rotate together when the inner shaft is pushed.However, this friction mechanism requires a high degree of dimensional accuracy, and The drawback was that the return force upon release was large.

The present invention aims to solve the above-mentioned drawbacks of the conventional technology, and the purpose of the present invention is to create a two-shaft system that does not require a high degree of dimensional accuracy and can reduce the return force of the inner shaft compared to the conventional method. The aim is to provide interlocking electrical components.

[Means for solving problems]

In order to achieve the above object, the present invention consists of an outer shaft rotatably supported by a bearing and for rotating the preceding electrical components, and an outer shaft inserted into the outer shaft so as to be rotatable and movable back and forth, In a two-shaft interlocking electrical component comprising an inner shaft for rotating a component and a push-lock mechanism for locking the inner shaft in a forward position, a ring-shaped driving body is fixed to the inner shaft, and a ring-shaped driving body is fixed to the outer shaft. A small hole smaller than the outer diameter of the driving body and a large hole larger than the outer diameter of the driving body are provided, and
A tapered surface is provided at the connection part between these small holes and large holes,
It is characterized in that the driving body is configured to frictionally engage with the tapered surface when the inner shaft is push-locked.

[Effect]

According to the above configuration, when the inner shaft is pushed to lock, the driving body frictionally engages with the tapered surface provided at the connecting part between the small hole and the large hole of the outer shaft, and rotates either the inner shaft or the outer shaft. Also, frictional force is generated between the inner and outer shafts, ensuring that the two shafts rotate together. Further, when the inner shaft is unlocked, the driving body returns together with the inner shaft without friction with the large hole of the outer shaft, so that the return force of the inner shaft can be reduced.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 is a cross-sectional view of a variable resistor with a two-shaft, dual-type push-lock mechanism in which the present invention is implemented. The upper half shows the state before the inner shaft is pushed, and the lower half shows the state when the inner shaft is pushed. shows.

In the drawings, 10 is a bearing, 11 is an outer shaft rotatably supported by the bearing 10, and 12 is an inner shaft rotatably fitted to the outer shaft 11. The inner and outer shafts 12 and 11 constitute a double shaft. ing. Reference numeral 13 denotes a ring-shaped drive body made of a rubber member attached to the inner shaft 12, and the outer shaft 11 has a small hole 14 for loosely engaging the inner shaft 12, and a large hole 15 having a larger diameter than the small hole 14. provided, small hole 1
A tapered surface 16 is provided at the connection portion between the large hole 15 and the large hole 15. The distance t between the large hole 15 and the outer peripheral surface of the inner shaft 12 is set to be larger than the distance t' between the inner shaft 12 and the outer peripheral surface of the driving body 13. 17 is a leaf spring case disposed at the front of the bearing 10; 18 is a click which is disposed at the front of the case 17 and rotates together with the outer shaft 11 by fitting a non-circular hole into the non-circular portion of the outer shaft 11; Plate 19 is a detent plate fixed to the case 20 at the front stage and provided with a groove, and the protrusion 18a of the click plate 18 is pressed against the detent plate 19 by a spring (not shown) housed in the spring case 17, and the click is clicked. It's starting to feel like it's coming out. 21, a non-circular hole is fitted into a non-circular portion of the outer shaft 11 to form the outer shaft 11;
A slider 22 is attached to the front surface of the slider holder 21 of the variable resistor A in the preceding stage that rotates together with the slider holder 21. 23 is a resistor board fixed to the front case 20, 24 is a spring case arranged in front of the resistor board 23, and 25 is the spring case 24.
A wire-wound spring 28 is stretched between the inner wall 26 of the inner wall 26 and a spring stopper plate 27 located at the tip of the outer shaft 11. Resistor board of resistor B, 3
0 is a rear-stage slider receiver that can rotate together with the inner shaft 12 by fitting a non-circular hole into the non-circular part of the inner shaft 12, 31 is a slider, and 32 is fixed to the rear-stage case 29.
A detent plate provided with a groove, 33 a click plate that rotates together with the slider receiver 30, 34 a rear spring case, and a spring housed in the case 34 (not shown)
As a result, the protrusion 33a of the click plate 33 is pressed against the detent plate 32 to produce a click feeling. Although not shown, a push-lock mechanism C is provided on the front surface of the spring case 34, which is locked by a push on the inner shaft 12 and returns to its original state when pushed further.

Next, the operation of the above variable resistor will be explained.

Now, when the inner shaft 12 is rotated in the state before pushing (as shown in the upper half of FIG. 1),
The slider receiver 30 of the variable resistor B at the rear stage rotates together, and at the same time, the convex portion 33a of the click plate 33 slides on the surface of the detent plate 32, and the adjustment of the variable resistor B at the rear stage is performed with a click sensation. It will be done.

Furthermore, when the outer shaft 11 is rotated, the slider receiver 21 of the variable resistor A in the previous stage also rotates, and at the same time, the convex portion 18a of the click plate 18 slides on the surface of the detent plate 19, causing a click sensation. The variable resistor A in the previous stage is adjusted.

Thus, by rotating the inner shaft 12 and the outer shaft 11, the variable resistor B at the rear stage and the variable resistor A at the front stage are individually adjusted.

Next, when the inner shaft 12 in FIG. 1 is pushed forward from its pre-push state (shown in the upper half of FIG. 1), the driver 13 of the inner shaft 12 comes into contact with the tapered surface 16 of the outer shaft 11. When we touch each other and continue to push,
Push the outer shaft 11. Then, the stop plate 36 of the outer shaft 11 pushes the spring stop plate 27 and moves forward while compressing the wire-wound spring 25. When the inner shaft 12 is eventually locked in the pressed position by the push-lock mechanism C, the outer shaft 11 stops forward with the spring 25 being compressed, as shown in the lower half of FIG.

In this state, a gap 35 is preset between the collar 11a of the outer shaft 11 and the bearing 10.

When the inner shaft 12 is rotated in the state shown in the lower half of FIG. 1 (the state in which the inner shaft 12 is push-locked), the slider receiver 30 at the rear stage rotates, and the variable resistor B at the rear stage produces a click sensation. It will be adjusted accordingly.
At the same time, the outer shaft 11 also rotates due to the frictional engagement between the drive body 13 and the tapered surface 16 of the outer shaft 11, and the variable resistor A in the preceding stage also rotates with a click sensation.

When the outer shaft 11 is rotated, the front and rear variable resistors A and B are simultaneously adjusted with a click sensation, similar to when the inner shaft 12 is rotated.

When the inner shaft 12 is pushed from this state, the lock of the inner shaft 12 is released, and the elastic force of the spring 25 returns it to its original state before the push.

According to the above embodiments of the present invention, the inner shaft 12
During push-lock, a ring-shaped driving body 13 made of rubber and having a large coefficient of friction is fixed to the inner shaft 12.
Since it has a structure in which it frictionally engages with a tapered surface 16 provided on the outer shaft 11, dimensional errors between each component are absorbed by the tapered surface 16, and the inner Frictional engagement between the outer shafts 12 and 11 is possible, and the periphery of the large hole 15 of the outer shaft 11 and the inner shaft 1
The distance t between the outer peripheral surfaces of the inner shaft 12 and the outer peripheral surface of the driving body 13 is set to be larger than the distance t' between the outer peripheral surface of the inner shaft 12 and the outer peripheral surface of the driving body 13. Therefore, when the push lock of the inner shaft 12 is released, the driving body 13 is It does not come into sliding contact with the circumferential surface of the large hole 15 of No. 11. Therefore, the return force of the inner shaft 12 is much smaller than that of the conventional example.

[Effect of idea]

As explained above, the frictional engagement between the inner and outer shafts is due to the frictional engagement between the ring-shaped driving body provided on the inner shaft and the tapered surface provided on the outer shaft. It is absorbed by the surface, so dimensional accuracy is not required as in the conventional case. Furthermore, when the inner shaft is unlocked, the driving body provided on the inner shaft does not come into contact with the large hole in the outer shaft, so the return force is much smaller than in the conventional example.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a variable resistor with two shafts and two push-lock mechanisms according to the present invention. The upper half shows the state before the inner shaft is pushed, and the lower half shows the state when the inner shaft is pushed. show. Figures 2 and 3
The drawings are explanatory diagrams of a conventional example, FIG. 2 is a sectional view of a main part of the rotary volume device, and FIG. 3 is a sectional view taken along the line D--D in FIG. 2. 11...Outer shaft, 12...Inner shaft, 13...Driver, 14...Small hole, 15...Large hole, 16...Tapered surface.

Claims (1)

[Scope of utility model registration request] An outer shaft that is rotatably supported by a bearing and rotates electrical components in the preceding stage; an inner shaft that is inserted into the outer shaft so that it can rotate and move forward and backward, and that rotates electrical components in the latter stage; and this inner shaft. In a two-shaft interlocking electric component equipped with a push-lock mechanism that locks the drive body in the forward position, a ring-shaped drive body is fixed to the inner shaft, and a small hole smaller than the outer diameter of the drive body and a ring-shaped drive body are fixed to the outer shaft. A large hole larger than the outer diameter of the body is provided, and a tapered surface is provided at a connecting portion between the small hole and the large hole, and the driving body is configured to frictionally engage with the tapered surface when the inner shaft is pushed. A two-axis interlocking electrical component characterized by: