JP6712049B2 - Volume with push switch and electronic device using the same - Google Patents

Description

The present invention relates to a volume with a push switch and electronic equipment such as a wireless device using the volume.

The push switch volume is configured by including a volume element and a switch element, a main body formed by projecting a rotary shaft for operating the volume element and the switch element, and a knob attached to the tip of the rotary shaft. It Then, by rotating the knob, the volume element is adjusted via the rotary shaft. The switch element and the volume element are arranged side by side in the axial direction of the rotary shaft, and generally, the volume element is arranged on the side closer to the knob and the switch element is arranged on the far side. This volume element is used not only as a normal volume whose level increases with right (clockwise) rotation, but also as an attenuator whose attenuation rate increases. Some switch contacts are turned on by pushing the knob through the rotary shaft, turned off by pushing again, or turned on only during the pushing. When the pushing force is released, the repulsive force of the internal spring is released. To restore the rotary shaft and knob.

Here, the volume knob may change (displace) due to vibration or unintentional contact of the knob with some member other than the user's operation. Such a case is remarkable in the case of a portable electronic device. Therefore, in order to prevent such a problem, the applicant of the present application has proposed Patent Document 1 for increasing the torque of the rotary knob.

In Patent Document 1, after a support cylinder that supports a rotary shaft of a volume element is fitted into a housing or a panel, a nut for fixing is formed in an annular shape, and an annular elastic member is fitted into the nut, and the elastic member The brake torque of the rotary shaft (knob) is increased by the outer circumference coming into contact with the inner circumference of the knob.

Japanese Patent No. 4811352

Patent Document 1 is a torque adjustment structure that can be applied to an existing configuration by simply replacing the nut and that the shape of the contact portion is devised to facilitate fitting. However, since the torque generating portion 20 of the elastic member 11 causes friction on the contact surface with the rotary knob or the contact surface with the cylindrical surface 27 of the panel 26, the rotary knob is pushed toward the panel 26. However, the present invention cannot be applied to a volume equipped with a push switch in which a rotary shaft and a knob are push-operated, which is an object of the present invention.

An object of the present invention is to provide a volume with a push switch that can increase brake torque and an electronic device including the volume.

A push switch volume of the present invention includes a main body having a volume element and a switch element built therein, a rotary shaft for operating the volume element and the switch element protrudingly formed, and a knob attached to a tip of the rotary shaft. A push switch in which the volume element is adjusted via the rotary shaft by rotating the knob, and the switch element is turned on/off via the rotary shaft by pushing the knob. In the attached volume, an elastic member that is interposed between the housing of the electronic device to which the push switch-equipped volume is attached and the knob, and that generates elastic force in the axial direction of the rotating shaft, and the elastic member look including a torque adjustment mechanism constructed and a friction member which is pressed against the back surface of the knob, the elastic member is a plate spring, leaf spring, around the support cylinder for supporting the rotation shaft in the body An annular mounting portion to be fitted, a connecting portion extending from the outer peripheral edge of the mounting portion in a direction away from each other on one diameter line of the supporting cylinder, and a free end of the connecting portion from a circumferential direction of the supporting cylinder. And a spring portion that is formed in a substantially semi-circular shape and has a spiral inclination, and the housing includes the mounting portion and the support cylinder on the outside of the support cylinder. A plurality of guide protrusions are arranged in the circumferential direction at intervals for fitting a nut for fixing, and the connecting portion extends outward from a gap between the two guide protrusions .

According to the above configuration, a volume with a push switch, more specifically, a push switch with a volume element as a switch element that is turned on by pushing the knob, turned off by pushing again, or turned on only while pushing In the volume, a torque adjusting mechanism is interposed between the knob of the electronic device to which the volume with push switch is attached and the knob. In order to respond to the push operation, the torque adjustment mechanism elastically repels in the push direction, that is, the axial direction of the rotary shaft, with a deflection amount larger than the push stroke of the rotary shaft for performing the push operation and the volume adjustment. An elastic member that generates a force and a friction member that is pressed against the back surface of the knob by the elastic member are configured.

Therefore, in order to prevent the volume from changing (shifting) due to the knob contacting some member unintentionally by providing a friction member for increasing the brake torque, simply providing the friction member is The push operation cannot be supported, that is, it can be applied only to the volume that normally rotates only. However, by interposing the elastic member, the push operation can also be supported.

Further , the leaf spring is preferable because it can be easily produced by sheet metal working and is more resistant to deterioration over time as an elastic member than a sponge.

Furthermore , in order to press the friction member against the back surface of the knob in a well-balanced manner, it is better that there are many fulcrums by the leaf springs, whereas a longer leaf spring is easier to handle the push stroke. Therefore, preferably, in the leaf spring, the spring portion that supports the friction member is formed so as to extend approximately halfway from two positions of the support cylinder of the rotating shaft facing each other at 180°.

As a result, the friction member can be supported in a well-balanced manner, with sufficient resilience, its adjustment is easy, and it is less likely to be subject to excessive stress such as when the leaf spring is suddenly started up, and is unlikely to crack. .. In particular, when the rotating shaft or knob having a small length of the spring portion has a small diameter, the spring portion extending from these two locations is suitable.

Furthermore , the guide protrusion can suppress the radial displacement of the annular mounting portion, and the fitting of the connecting portion into the gap between the two guide protrusions can also suppress the rotation of the leaf spring. Further, with respect to the push operation of the knob, the spring portion moves up and down along the outer peripheral side of the guide protrusion, so that the operation can be stabilized.

Further, an electronic device of the present invention is characterized by including the volume with a push switch described above.

According to the above configuration, it is possible to realize an electronic device in which the volume is not changed unintentionally even if the push switch volume is used.

As described above, the volume with a push switch of the present invention and the electronic device using the volume include the rotation for performing the push operation and the volume adjustment between the housing of the electronic device to which the volume with the push switch is attached and the knob. A torque adjusting mechanism including an elastic member that generates an elastic force in the axial direction of the shaft and a friction member that is pressed against the back surface of the knob by the elastic member is interposed.

Therefore, in order to prevent the knob from unintentionally touching any member and the volume is changed (shifted) by providing a friction member that increases the brake torque, the push-push operation is performed by interposing an elastic member. It can also handle operations.

It is sectional drawing which expands and shows a part of electronic device which uses the volume with a push switch which concerns on one embodiment of this invention. It is a perspective view of FIG. FIG. 3 is an exploded perspective view of FIGS. 1 and 2. It is a figure which shows the attachment procedure of the said volume with a push switch in the housing|casing of the said electronic device. It is sectional drawing which shows the state in which the volume with the said push switch is pushing.

1 is an enlarged sectional view showing a part of an electronic device 2 using a volume 1 with a push switch (hereinafter referred to as volume 1) according to an embodiment of the present invention, and FIG. 2 is a perspective view of FIG. FIG. 3 is an exploded perspective view of FIGS. 1 and 2. The electronic device 2 is, for example, a handy type wireless device, and the volume 1 is arranged on the right end side of the upper portion of the housing 3. An antenna is provided upright on the left end side of the upper portion of the casing 3 not shown, and a band selection knob and a frequency adjustment knob are arranged near the center.

The volume 1 includes a switch element 13 in the main body 11, which is turned on when the knob 12 is pushed, turned off when the knob is pushed again, or turned on only during the push, and a volume element which can be adjusted by rotating the knob 12. 14 and. The switch element 13 and the volume element 14 are arranged side by side in the axial direction of the rotating shaft 15. Generally, as shown in FIG. 1, the volume element 14 is arranged on the side closer to the knob 12, and the switch element 13 is arranged on the far side. Has been done. This volume 1 has, for example, a push stroke of 0.5 mm and a rotation range of 300°. The volume 1 may be used not only as a normal volume whose level increases with right (clockwise) rotation, but also as an attenuator whose attenuation rate increases. The knob 12 is made of resin or the like in a hat shape, and is fitted into the rotary shaft 15 from the tip thereof.

FIG. 4 is a diagram showing a procedure for attaching the volume 1 to the housing 3. (A1) to (a3) are plan views and (b1) to (b3) are corresponding perspective views. In the upper panel 31 of the housing 3 made of metal or resin, an opening 32 for mounting the volume 1 is formed on the right end side, and as shown in FIGS. The cover 33 for preventing the unintended contact is formed so as to be higher toward the right outer side.

On the outer peripheral portion of the knob 12, irregularities 121 extending in the axial direction in a knurled shape, that is, alternately in the circumferential direction, are formed to prevent slippage. Then, one of the ridges 122 of the unevenness 121 is formed to be high and serves as a guideline indicating the volume level. Therefore, the cover 33 is arranged with a space 331 through which the one convex strip 122 passes.

In the main body 11, a support cylinder 16 that supports the rotary shaft 15 is formed to extend from the volume element 14, and an outer screw is engraved on the outer peripheral portion of the support cylinder 16. As shown in FIGS. 4A2 and 4B2, by arranging the volume 1 inside the housing 3 and inserting the rotary shaft 15 and the support cylinder 16 thereof into the opening 32, as shown in FIG. , The rear surface side of the upper panel 31 is received by the step formed by the portion of the large-diameter volume element 14 and the portion of the small-diameter support cylinder 16, and thereafter, as shown in FIGS. 4(a3) and (b3), the front surface The side 1 is received by the nut 17 screwed to the support cylinder 16, so that the volume 1 is fixed to the housing 3. As shown in FIG. 1, in the volume 1, a portion between the inner peripheral surface of the support cylinder 16 and the outer peripheral surface of the rotary shaft 15 is circled by a reference numeral 18 and is waterproofed by an O-ring or the like to support it. Between the outer peripheral surface of the cylinder 16 and the inner peripheral surface of the opening 32, a portion indicated by a circle with reference numeral 19 is waterproofed by an O-ring or the like.

In the volume 1 and the casing 3 configured as described above, the torque adjusting mechanism 4 as shown in FIGS. 1 and 3 is interposed between the upper panel 31 of the casing 3 and the knob 12. It should be noted that the torque adjusting mechanism 4 of the present invention has a bending amount larger than the push stroke of the rotary shaft 15 in order to correspond to the push operation, and the elastic force is exerted in the push direction, that is, the axial direction of the rotary shaft 15. The elastic member 41 that exerts the above-mentioned effect and the friction member 42 that is pressed against the back surface 123 of the knob 12 by the elastic member 41 are configured. The torque adjusting mechanism 4 presses the friction member 42 against the back surface 123 of the knob 12 to generate a brake torque for the knob 12, and the knob 12 vibrates or unintentionally comes into contact with some member to change the volume. It is to prevent it from slipping.

In the present embodiment, the elastic member 41 is composed of, for example, a leaf spring formed by subjecting SUS301 to rust prevention treatment. As shown in FIG. 3, the elastic member 41 extends in a direction in which the annular mounting portion 411 fitted around the support cylinder 16 and the outer peripheral edge of the mounting portion 411 are separated from each other on one diameter line of the support cylinder 16. A pair of connecting portions 412 and a spring portion 413 extending from the free end of the connecting portion 412 in the circumferential direction of the support cylinder 16 and having a spiral inclination are configured. The elastic member 41 is bent at fold lines 414 and 415 parallel to each other at two positions of the spring portion 413, the intermediate portion 4131 is inclined, and the base end side portion 4132 and the free end side portion 4133 are not inclined, The free end side portion 4133 is formed in parallel with the mounting portion 411 and the like, and the free end side portion 4133 receives the back surface of the friction member 42 by the surface. For example, the thickness of the spring portion 413 is 0.3 mm.

Corresponding to this elastic member 41, on the upper panel 31 of the housing 3, as shown in FIG. 4, a space for fitting the mounting portion 411 and the nut 17 is provided on the outer side of the support cylinder 16, and the peripheral portion is provided. Guide protrusions 35 are formed at a plurality of positions in the direction. The connecting portion 412 is fitted in the gap between the two guide protrusions 35. The elastic member 41 is set before fitting the volume 1 into the housing 3, as shown in FIGS. 4(a1) and (b1), and the nut 17 is tightened as shown in FIGS. 4(a3) and (b3). When attached, as shown in FIG. 1, it is sandwiched between the back surface of the nut 17 and the upper panel 31 of the housing 3. As shown in FIGS. 4A3 and 4B3, after the volume 1 is attached to the housing 3, the friction member 42 is fitted around the support cylinder 16 and the knob 12 is further fitted.

As described above, the volume 1 according to the present embodiment can cope with the push operation by interposing the elastic member 41 when the friction member 42 that increases the brake torque of the knob 12 is provided.

Further, since the elastic member 41 is composed of a leaf spring, it can be easily formed by sheet metal working, and is more resistant to deterioration over time than a sponge or the like, which is preferable.

Furthermore, in order to press the friction member 42 against the back surface 123 of the knob 12 in a well-balanced manner, it is preferable that there are many fulcrums by the leaf springs, whereas a long leaf spring is easier to handle the push stroke. Therefore, in the leaf spring, the spring portion 413 that supports the friction member 42 is formed so as to extend from the two positions of the support cylinder 16 of the rotating shaft 15 facing each other at 180° to a substantially half circumference. Therefore, the friction member 42 can be supported in a well-balanced manner, the elastic force is sufficient, the adjustment thereof is easy, and the excessive stress that is generated when the intermediate portion 4131 of the leaf spring is suddenly raised is less likely to be applied. , Hard to break. In particular, if the length of the spring portion 413 is difficult to earn and the rotary shaft 15 and the knob 12 have a small diameter, the spring portion 413 extending from these two locations is suitable.

Further, since the guide protrusion 35 is provided on the outside of the support cylinder 16 in the housing 3, it is possible to suppress the radial displacement of the annular mounting portion 411 and to fit the connecting portion 412 between the guide protrusions 35. The rotation can also suppress the rotation of the elastic member 41. Further, with respect to the push operation of the knob 12, the spring portion 413 moves up and down along the outer peripheral side of the guide protrusion 35, so that the operation can be stabilized.

Furthermore, the friction member 42 may be realized by a member that generates friction such as felt, but in the present embodiment, the friction member 42 is formed of an annular rubber plate that has elasticity and is fitted around the support cylinder 16. The rubber plate is realized by chloroprene rubber having a thickness of 0.8 mm, for example. As a result, as shown in FIG. 5, when the knob 12 is pushed, the outer peripheral side of the friction member 42 is suppressed and deforms (warps), so that the friction member 42 can be fixed to the support cylinder 16 and the friction The member 42 can generate a reaction force when the knob 12 is pushed.

By providing the torque adjusting mechanism 4 as described above, it is possible to realize the electronic device 2 in which the volume does not change unintentionally (no deviation) even when the push switch volume 1 is used.

The torque adjusting mechanism 4 of the knob 12 described above is not limited to the volume element 14, and may be applied to an encoder that is a similar rotary operation component.

1 Volume with push switch (Volume)
11 main body 12 knob 123 back surface 13 switch element 14 volume element 15 rotating shaft 16 support cylinder 17 nut 2 electronic device 3 housing 31 upper panel 32 opening 33 cover 35 guide protrusion 4 torque adjusting mechanism 41 elastic member 411 mounting portion 412 connecting portion 413 Spring portion 4131 Intermediate portion 4132 Base end side portion 4133 Free end side portion 42 Friction member

Claims (2)

A main body having a volume element and a switch element built therein, and a rotary shaft for operating the volume element and the switch element protrudingly formed, and a knob attached to the tip of the rotary shaft, the knob being rotated to rotate the knob. In the volume with a push switch, adjustment of the volume element is performed via a rotating shaft, and ON/OFF operation of the switch element is performed via the rotating shaft by pushing the knob.
An elastic member, which is interposed between the housing of the electronic device to which the push-switch-equipped volume is attached, and the knob, generates elastic force in the axial direction of the rotating shaft, and the elastic member on the back surface of the knob look including a torque adjustment mechanism constructed and a pressing is friction member,
The elastic member is composed of a leaf spring, and the leaf spring has an annular mounting portion that is fitted around a support cylinder that supports the rotating shaft in the main body, and a diameter line of the support cylinder from an outer peripheral edge of the mounting portion. A pair of connecting portions extending in directions away from each other, and a spring portion formed from the free end of the connecting portion in a substantially semi-circular shape in the circumferential direction of the support cylinder and having a spiral inclination. Composed,
A plurality of guide protrusions are arranged in the casing in the circumferential direction on the outer side of the support cylinder with a space for inserting the mounting portion and a nut for fixing the support cylinder to the case. The push switch volume is characterized in that the connecting portion extends outward from a gap between the two guide protrusions . An electronic apparatus comprising: a push switch with volume of the claims 1 Symbol placement.

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