JP3430774B2 - Dial drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial driving device used for audio equipment such as a portable headphone stereo.

[0002]

2. Description of the Related Art Conventionally, when a radio tuner is installed in an audio device such as a portable headphone stereo, a dial operation part, a tuning circuit, etc. are provided on the device body side, a dial pointer traveling device is provided on the cassette cover side, and a cassette cover body is provided. Even when the device is opened or closed with respect to the main body of the device, some dials can be displayed on the side of the cassette lid by operating the dial on the main body. As a conventional example of such a dial driving device, the one described in Japanese Patent Laid-Open No. 61-233487 is known.

FIG. 9 is a perspective view of the above-mentioned conventional dial driving device, and FIG. 10 is a side sectional view of the same. In the figure, when the tuning knob 29 is rotated, the variable condenser 30 is rotated by the gear for tuning, and the drum portion of the tuning knob 29 and the dial rope 25 are interlocked and the pointer interlocking piece 22 connected to the dial rope 25. Is the guide rib 3
2 Slide on. On the other hand, a pointer 21 is movably attached to a holder 28 attached to the cassette lid 26, and a main portion of the pointer 21 and a pointer interlocking piece 22 are connected to each other.
The dial unit on the device body 34 side is interlocked. The pointer 21 rotates with the cassette cover 26 and the holder 28 around the rotation support shaft 27 of the cassette cover 26 even when the cassette cover 26 is opened and closed.
Stable running without affecting the storage of.

[0004]

In the conventional dial driving device as described above, the end portion 34a of the device main body 34 is used.
Due to the restriction due to the above and the overlap amount of the main portion of the pointer 21 of the cassette lid 26 and the connecting portion of the pointer interlocking piece 22 is limited, the opening angle of the cassette lid cannot be increased. The opening angle can be increased by notching the end of the device body 34 as shown in FIG. 11, but in this case, the main part of the pointer 21 and the pointer interlocking piece 22.
The engagement with the connecting portion of the cassette lid is disengaged, and the pointer traveling portion of the cassette lid and the operation portion of the main body device do not work together. For this reason, the opening / closing angle of the cassette lid is limited, and it is not possible to provide an operation unit or a battery storage unit inside the main body device.

According to the present invention, the opening / closing angle of the cassette lid can be increased, and the operation section and the battery storage section are provided inside the main unit.
The purpose of the present invention is to provide a dial drive device that has a low operating force, a small backlash, a low cost, and a small space.

[0006]

In order to solve this problem, a dial drive device of the present invention is rotatably and rotatably supported with respect to a main body device and the rotation shafts of the main body device and the hinge portion. A cassette lid, a drive member provided in the main body device and driven in synchronization with the movement of a tuning mechanism, a main body side dial interlocking member driven by the drive member along the main body side guide means, and the cassette A cassette lid body dial interlocking member provided on the lid body and movable along the cassette lid body side guide means in a direction substantially parallel to the main body side guide means; a display member driven by the cassette lid body dial interlocking member; A plurality of hinge portions integrally formed with the cassette lid dial interlocking member and bent with respect to an axis parallel to the rotation axis of the hinge portion of the cassette lid are integrally formed to form the main body. The dial-side interlocking member of the main body side is slidably connected to the connecting portion of the dial-side interlocking member in the direction orthogonal to the rotation axis of the cassette lid, and the movement of the dial-side interlocking member of the main body side is performed regardless of whether the cassette lid is opened or closed. And a hinge connecting portion configured to drive the cassette lid dial interlocking member in conjunction with the above.

With this configuration, even if the opening angle of the cassette lid is increased, the hinge connecting portion bends following the rotation of the cassette lid portion, and the cassette lid body is interlocked with the movement of the dial interlocking member on the main body side. Can drive the dial interlocking member,
The cassette lid dial interlocking member is used to drive the display member to display the dial. The opening angle of the cassette lid can be increased, the operating force is low, and the backlash is small. A device can be provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first invention of the present invention is to provide a main body device, a cassette lid rotatably and rotatably supported with respect to the main body device and a pivot of a hinge portion, and the main body. A drive member provided in the device and driven in synchronization with the movement of the tuning mechanism, a main body side dial interlocking member driven by the drive member along the main body side guide means, and the main body side provided on the cassette lid body. A cassette lid body dial interlocking member movable along the cassette lid body side guide means substantially parallel to the guide means, a display member driven by the cassette lid body dial interlocking member, and the cassette lid body dial interlocking member A plurality of hinge portions that are bent to an axis parallel to the rotation axis of the hinge portion of the cassette lid body are integrally formed, and are connected to the connecting portion of the dial interlocking member on the main device side. The cassette lid dial interlocking member is slidably connected in a direction orthogonal to the rotation axis of the cassette lid, and is interlocked with the movement of the main body side dial interlocking member regardless of whether the cassette lid is open or closed. And a hinge connecting portion configured to be capable of being driven, so that even if the opening angle of the cassette lid is increased, the hinge connecting portion bends following the rotation of the cassette lid portion. Thus, the cassette lid dial interlocking member can be driven in association with the movement of the main body side dial interlocking member, and the cassette lid dial interlocking member drives the display member to perform dial display.

According to a second aspect of the present invention, in the structure described above, the hinge connecting portion is integrally formed with the main body side dial interlocking member, and the hinge portion bends with respect to an axis parallel to the rotation axis of the cassette lid. Are integrally formed, and are connected slidably to the connecting portion of the cassette lid dial interlocking member in a direction orthogonal to the rotation axis of the cassette lid to open and close the cassette lid. The cassette lid dial interlocking member can be driven independently of the movement of the main body side dial interlocking member regardless of the movement of the main body side dial interlocking member. In this configuration, the same operation as the invention according to claim 1 is achieved. Can be fulfilled

A third invention of the present invention is the above-mentioned first or second invention.
In the configuration according to the invention, the display member is rotationally driven by a rack provided on the cassette lid dial interlocking member. In this configuration, the cassette lid is interlocked with the movement of the main body side dial interlocking member. The body dial interlocking member can be driven, and the cassette lid body dial interlocking member rotationally drives the display member to perform dial display.

According to a fourth aspect of the present invention, on the main equipment side, the rack is driven in conjunction with the movement of the tuning mechanism, and the main body side dial interlocking member is driven by the rack along the main body side guide means. A cassette lid dial interlocking member provided on a cassette lid rotatably supported by a hinge portion with respect to the main body device side is movable along a cassette lid side guide means substantially parallel to the main body side guide means. The main body device side dial has a hinge connecting portion formed integrally with the cassette lid dial interlocking member and formed with a plurality of hinge portions that are bent with respect to an axis parallel to the rotation axis of the hinge of the cassette lid. Regardless of whether the cassette lid is opened or closed, it is slidably connected to the connecting portion of the interlocking member in a direction orthogonal to the rotation axis of the cassette lid. It is characterized in that the cassette lid dial interlocking member is driven in association with the movement of the main body side dial interlocking member to thereby rotationally drive the display member. Even if the angle is increased, the hinge connection part bends following the rotation of the cassette lid part, so that the cassette lid dial interlocking member can be driven in conjunction with the movement of the main body side dial interlocking member,
The dial can be displayed by rotationally driving the display member by the cassette lid dial interlocking member.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 8. (Embodiment 1) FIG. 1 is a partially cutaway perspective view of a dial drive device according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing components of the main body device side, and FIG. 3 is components of the cassette lid side. FIG. 4 is a side sectional view showing the cassette lid side component part, FIG. 5 is a side sectional view showing the main body device side component part, and FIG. 6 is a cassette lid in which the cassette lid body and the main body device are combined. FIG. 7 is a side sectional view when the cassette lid is closed, in which the connecting portion of the body dial interlocking member and the connecting portion of the body side dial interlocking member are connected, FIG. FIG. 7 is a side view of a main part in a state where the connecting portion of the cassette lid dial interlocking member and the connecting portion of the main body side dial interlocking member are connected when the lid is closed.

1 to 8, the main body cabinet 1 is integrally formed with a rotary bearing 1a and a rack guide 1b. The main body side dial interlocking member 2 has a connecting portion 2
a and a slider 2c are integrally formed, and a rack 2b which is a drive member for moving the main body side dial interlocking member 2 is connected, and the slider 2c is slidably arranged on the rack guide 1b of the main body cabinet 1. Has been done. The rack 2b may use a dial rope as in the conventional case. The tuning knob 3 is rotatably supported, and the tuning knob gear 4 is coaxially fixed by the tuning knob 3 and a fixing screw 5 and meshes with a rack 2b for moving the main body side dial interlocking member 2. The shaft 7a of the variable capacitor 7 arranged on the printed wiring board 16 is a variable capacitor gear 6
, And the variable condenser gear 6 meshes with the tuning knob gear 4.

The cassette lid 8 is provided with a rotary support shaft 8a which is inserted into the rotary bearing 1a of the main body cabinet 1 and integrally screwed to rotate the cassette cover 8, and this rotary support shaft 8a.
A hinge is formed by the rotary bearing 1a. The cassette lid 8 is further provided with a rack guide 8b and a fixing boss 8c for the concealing member concealing plate 9. The rack guide 8b is configured to be substantially parallel to the rack guide 1b of the main body cabinet 1. The connecting member concealing plate 9 also serves as a guide for the cassette lid dial interlocking member 11, and is fixed to the fixing boss 8c of the cassette lid 8 with a fixing screw 10. The cassette lid dial interlocking member 11 has a slider 11 slidably arranged on the rack guide 8b of the cassette lid 8.
a, a hinge connecting portion 11b slidably inserted in the connecting portion 2a of the main body side dial interlocking member 2, and a rack 1 formed in the sliding direction of the cassette lid dial interlocking member 11
1d is integrally formed, and this hinge connecting portion 11b
Is provided with a thinned hinge 11c so as to be easily bent with respect to an axis parallel to the rotation axis of the cassette lid 8. The cassette cover dial interlocking member 11 and the hinge connecting portion 11b may be integrally formed, or may be formed by integrally combining separate parts.

A rotary display plate gear 13 is fixed to a rotary display plate 12 rotatably provided on the cassette lid 8 with a fixing screw 14. The rotary display plate gear 13 is a dial cover interlocking member 11 of the cassette lid body. It is meshed with the rack 11d. An intermediate chassis 15 is fixed to the main body cabinet 1, and the intermediate chassis 15 is integrally formed with a rack guide 15a for guiding sliding of the connecting portion 2a of the main body side dial interlocking member 2. A printed wiring board 16 is fixed to the intermediate chassis 15. Reference numeral 17 is a battery, and 18 is a lid of the battery storage portion.

The operation of the dial driving device of the first embodiment constructed as described above will be described below. First, when the tuning knob 3 is rotated, the tuning knob gear 4 fixed to the tuning knob 3 is rotated, and the variable condenser gear 6 meshed with this gear.
The channel can be selected by rotating the variable capacitor 7 to rotate the variable capacitor 7 to change the capacitance. At the same time, along with the movement of the rack 2b meshed with the tuning knob gear 4, the slider 2c and the connecting portion 2a of the main body side dial interlocking member 2 are moved.
And are guided by the rack guide 1b of the main body cabinet 1 and the rack guide 15a of the intermediate chassis 15 to move along the rack guide 1b, and the main body side dial interlocking member 2 moves.

With the movement of the dial interlocking member 2 on the main body side, the hinge connecting portion 11b of the cassette lid dial interlocking member 11 is moved.
And the slider 11a is the rack guide 8b of the cassette lid 8.
Move along. Due to this movement, the rotary display plate gear 13 meshed with the rack 11d of the cassette lid dial interlocking member 11 rotates, and the rotary display plate 12 fixed to the rotary display plate gear 13 rotates to receive the reception frequency. Can be displayed. The cassette lid 8 is provided with a rotary shaft 8a of the cassette lid and a rotary bearing 1a of the main body cabinet 1 for mounting the cassette half inside the main body device or replacing the battery 17.
The cassette lid 8 can be opened by pivoting about. Even when the cassette lid 8 is open, when the tuning knob 3 is rotated, the rack 2b of the main body side dial interlocking member 2 moves. It is necessary for the rotation display plate 12 to rotate in accordance with this movement, and the hinge connecting portion 11b of the cassette lid dial interlocking member 11 is thinned to be an axis parallel to the axis of the rotation support shaft 8a of the cassette lid 8. By disposing a plurality of hinges 11c that bend with respect to each other to eliminate the elastic force of the hinge connecting portion 11b and reduce the sliding load, the cassette lid 8
Even in the open state, the rotary display plate 12 can be rotated with the same operability and followability as the closed state of the cassette lid 8.

However, in the above structure, if the hinge connecting portion 11b of the cassette lid dial interlocking member 11 does not have the hinge 11c that bends with respect to the axis parallel to the axis 8a of the cassette lid 8, or Hinge connection part 11b
When a spring steel material or the like is used for, the displacement load of the hinge connecting portion 11b accompanying the opening and closing of the cassette lid 8 is applied to the tip of the connecting portion 2a of the main body side dial interlocking member 2, and the main body side dial interlocking member 2 is connected. It is strongly pressed against the rack guide portion 15a of the intermediate chassis 15 which guides the portion 2a.
Due to the sliding load and the twisting force generated by this, the sliding load of the slider 2c of the main body side dial interlocking member 2 and the cassette lid dial interlocking member 11 is increased and the operating force is increased to deteriorate the operability and the cassette lid. It is conceivable that the followability of the body dial interlocking member 11 deteriorates and causes backlash during tuning.

Therefore, the cassette lid dial interlocking member 11
The points of operation of the hinge 11c of the connecting portion 11b of FIG.
7 and FIG. 7, the hinge connecting portion 11b of the cassette lid body dial interlocking member 11 is made of, for example, polypropylene resin having good hinge characteristics.
Of the rotary support shaft 8a and the rotary bearing 1a of the main body cabinet 1 on the horizontal position in the figure, that is, the hinge connection of the cassette lid dial interlocking member 11 by the connecting portion 2a of the main body side dial interlocking member 2 and the side wall of the main body cabinet 1. Part 11b
Is near the point where the vertical movement of the cassette lid 8 shifts from the vertical movement of the cassette lid 8 around the rotation spindle 8a, the vertical axis of the rotation spindle 8a of the cassette lid 8 in the figure, and the cassette lid. A hinge 11c that bends about an axis parallel to the axis of the rotation support shaft 8a of the cassette lid 8 is provided at a position roughly divided into two at an opening / closing angle of 8, and smooth rotation is achieved by the hinge characteristic of the polypropylene material. Made possible. Accordingly, the displacement load of the hinge connecting portion 11b of the cassette lid dial interlocking member 11 is not applied to the connecting portion 2a of the main body side dial interlocking member 2, so that the slider 2c of the main body side dial interlocking member 2 and the cassette lid body dial interlocking member. The sliding load of the slider 11a of 11 is eliminated, and the operation force and the backlash at the time of tuning can be reduced.

As described above, according to the present embodiment, the opening / closing angle of the cassette lid can be increased, and the cassette lid side can be stably driven by following the dial operation on the device body side regardless of whether the cassette lid body is opened or closed. A possible dial drive device can be realized.

In the first embodiment, the dial display is performed by rotating the rotation display plate 12, but the pointer not shown in the figure coupled to the cassette lid dial interlocking member 11 causes the cassette lid dial interlocking member 11 to move. The dial may be displayed in a movement parallel to the traveling direction.

Although the rack 2b has been described as meshing with the tuning knob gear 4 fixed coaxially with the tuning knob 3, it may be meshed with the variable condenser gear 6 as long as it can be linked with the movement of the tuning mechanism. .

Further, although the hinge connecting portion 11b is integrated with the cassette lid dial interlocking member 11 and is slidably inserted into the connecting portion 2a of the main body side dial interlocking member 2, the hinge connecting portion 11b is described. The main body side dial connecting member 2 side is integrally provided, and the cassette cover dial interlocking member 11 side is provided with a structure similar to the connecting portion 2a of the main body side dial interlocking member 2 shown above, and slidably inserted therein. Even if it is done, the same effect is achieved.

[0024]

As described above, according to the present invention, there are provided a plurality of hinge portions which are formed integrally with the cassette lid dial interlocking member and which are bent with respect to the axis parallel to the rotation axis of the hinge portion of the cassette lid. It is formed by individual molding, and it is slidably connected to the connecting part of the dial interlocking member on the main device side in the direction orthogonal to the rotation axis of the cassette lid, and the main body is open regardless of whether the cassette lid is open or closed. By including a hinge connecting portion configured to drive the cassette lid dial interlocking member in association with the movement of the side dial interlocking member,
It is possible to prevent an increase in the sliding load between the main body side dial interlocking member and the cassette lid body dial interlocking member when the cassette lid is opened,
Even if the opening angle of the cassette lid is increased, the hinge connecting portion bends following the rotation of the cassette lid portion, so that the cassette lid body dial interlocking member can be driven in conjunction with the movement of the main body side dial interlocking member, The dial can be displayed by driving the display member with the cassette lid dial interlocking member, and the opening angle of the cassette lid can be increased, so that the operation unit, the battery storage unit, etc. can be provided inside the main body device and the low operation is possible. It is possible to provide a low-cost and space-saving dial drive device with less backlash by force.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a dial driving device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing components of the main body side as well.

FIG. 3 is a plan view showing components of the cassette lid side.

FIG. 4 is a side sectional view showing components of the cassette lid side.

FIG. 5 is a side cross-sectional view showing components of the main device as well.

FIG. 6 is a side sectional view when the cassette lid is closed and the cassette lid is connected to the main body device, and the connecting portion of the cassette lid dial interlocking member and the connecting portion of the main body side dial interlocking member are connected.

FIG. 7 is a side sectional view of the same when the cassette lid is opened.

FIG. 8 is a side view of an essential part in a state where the connecting portion of the cassette lid body dial interlocking member and the connecting portion of the main body side dial interlocking member are connected together when the cassette lid body is closed.

FIG. 9 is a perspective view of a conventional dial driving device.

FIG. 10 is a side sectional view of the same.

FIG. 11 is a side sectional view showing a case where the opening angle of the cassette lid is also increased.

[Explanation of symbols]

1 Main body cabinet 1a Rotating bearing 1b Rack guide 2 Body side dial interlocking member 2a connection part 2b rack 2c slider 3 Tuning knob 4 Tuning knob gear 6 Variable condenser gear 7 Variable capacitors 8 cassette lid 8a Rotating support shaft 8b Rack guide 9 Connecting member hidden plate 11 Cassette lid dial interlocking member 11a slider 11b Hinge connection part 11c Hinge of hinge connection part 11d rack 12 Rotation display board 13 Rotation display plate gear 15 Intermediate chassis 15a Rack guide for intermediate chassis

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H03J 1/02-1/08 G11B 31/00-33/10

Claims (4)

(57) [Claims] 1. A main body device, a cassette lid which is rotatably and rotatably supported on the main body device and a pivot of a hinge portion, and is interlocked with the movement of a tuning mechanism provided in the main body device. Drive member driven by the drive member, a main body side dial interlocking member driven by the drive member along the main body side guide means, and a cassette lid body side guide provided on the cassette lid body in a direction substantially parallel to the main body side guide means. A cassette lid dial interlocking member movable along the means, a display member driven by the cassette lid dial interlocking member, and a hinge portion of the cassette lid body integrally formed with the cassette lid dial interlocking member. A plurality of hinge portions that bend with respect to an axis parallel to the rotation axis are integrally formed, and the rotation axis of the cassette lid body is connected to the connection portion of the dial interlocking member on the main device side. The cassette lid dial interlocking member is configured to be slidably connected in a direction orthogonal to each other, and the cassette lid dial interlocking member can be driven in association with the movement of the main body side dial interlocking member regardless of whether the cassette lid is open or closed. A dial driving device comprising a hinge connecting portion. 2. The hinge connecting portion is integrally formed with the main body side dial interlocking member, and a plurality of hinge portions that bend with respect to an axis parallel to the rotation axis of the cassette lid are integrally formed,
The cassette lid body dial interlocking member is slidably connected to the connecting portion of the cassette lid body in a direction orthogonal to the rotation axis of the cassette lid body. The dial driving device according to claim 1, wherein the dial driving device is configured to be capable of driving the cassette lid dial interlocking member in association with movement. 3. The dial driving device according to claim 1, wherein the display member is rotationally driven by a rack provided on the cassette lid dial interlocking member. 4. On the main device side, a rack is driven in conjunction with the movement of the tuning mechanism, and the main body side dial interlocking member is driven along the main body side guide means by this rack, while the main device side is hinged. A cassette lid body dial interlocking member provided on a cassette lid body rotatably supported by a portion is movable along a cassette lid body side guide means substantially parallel to the main body side guide means, and the cassette lid body A hinge connecting portion formed integrally with a dial interlocking member and formed with a plurality of hinge portions that are bent with respect to an axis parallel to the rotation axis of the hinge of the cassette lid is connected to the connecting portion of the dial interlocking member on the main device side. By slidably connecting the cassette lid in a direction orthogonal to the rotation axis of the cassette lid, the main body side dial connection is performed regardless of whether the cassette lid is opened or closed. A dial driving device characterized in that the cassette lid dial interlocking member is driven in association with the movement of the moving member to thereby rotationally drive the display member.