JP2005190575A - Rotary switch of cassette deck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of parts and the man-hour, and to perform easily positioning of a rotary switch. <P>SOLUTION: This switch has a base 9 rotated in accordance with an operation mode of cassette loading and tape loading and used for controlling operation of these loadings and attached to a substrate 1, a rotary body 10 arranged at an upper plane of the base 9, and a cam gear 2 rotated integrally with this rotation body 10; the rotation body 10 and the cam gear 2 are connected by hook structure of a slide type, the hook structure is constituted of a lower side hook part 11 which is protruded to an upper plane of the rotation body 10 and in which an almost T-shaped engaging piece 11a is formed, an upper side hook part 12 which is protruded to a lower plane of the cam gear 2 and in which an almost T-shaped engaging piece 12a is formed, and the rotation body 10 and the cam gear 2 are integrated detachably by engaging the engaging piece 11a of the lower side hook part 11 of the rotation part 10 and a engaging groove 12a of the upper side hook part 12 of the cam gear 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rotary switch of a cassette deck that is rotated according to an operation mode of the cassette deck.

  In general, a cassette deck such as a video deck is rotated by the driving force of a loading motor, and each operation of cassette loading, which is the operation from cassette ejection state to cassette storage, and tape loading, which is operations such as tape playback and rewinding. A rotary switch is provided that rotates according to the mode, detects a cassette loading state and a tape loading state, and controls these loading operations. Conventional rotary switches include those shown in FIGS. 6A and 6B, for example. The rotary switch includes a base 102 attached to the substrate 101, a rotating body 103 on the base 102, and a cam gear 104 that rotates integrally with the rotation of the rotating body.

  In this rotary switch, the pin 105 protrudes upward from the vicinity of the edge of the rotating body 103, and the cam gear 104 is inserted in the pin insertion hole 104a in the vicinity of the edge of the cam gear 104. The rotating body 103 was rotated integrally. In addition, this conventional rotary switch requires a screw for fixing the substrate.

  However, this conventional rotary switch has a problem that the number of parts is increased because a screw for fixing the substrate is required and the pin 105 is required.

  Further, the rotation mode switch described in Japanese Utility Model Publication No. 62-202726 includes a printed circuit board having a wiring pattern and a slider that is provided rotatably with respect to the printed circuit board and contacts the wiring pattern. A rotation mode switch comprising a rotor, wherein a positioning through hole is provided in at least one of a printed circuit board and a rotor.

  However, this requires a pin for insertion into the through hole.

  Further, a rotary type switch board positioning device described in Japanese Utility Model Publication No. 63-56535 discloses a rotary type in which a rotor for rotating a switch board is superposed on a switch board on which a contact pattern is formed, and the rotor is integrally rotated. This is a switch in which the center of the rotor and the center of the substrate are axially engaged, and the positioning corresponding portion corresponding to the mutual engagement between the concave portion and the convex portion is formed in the peripheral portion corresponding to the rotor and the substrate. .

  However, this requires a fixing pin.

  The cassette deck mode switch described in Utility Model Registration No. 3074178 is rotated according to the operation mode of the cassette deck, and includes a stator and a rotor. The stator has a contact formation surface on which a plurality of contacts are formed. The rotor has a disk shape having a slider that can come into contact with each contact on a surface facing the contact formation surface of the stator. The stator and the rotor are positioned in the radial direction with each other by being rotatably fitted on the outer peripheral side of the contact formation surface.

However, in this case, the screw must be screwed because a vertical drop occurs.
Japanese Utility Model Publication No. 62-202726 Japanese Utility Model Publication No. 63-56535 Utility Model Registration No. 3074178

  The present invention eliminates the above-mentioned conventional problems, can reduce the number of screws for fixing the board, can reduce the number of parts and man-hours, and can easily position the rotary switch. The purpose is to provide a rotary switch for the deck.

  The present invention has been proposed in order to solve the above problems, and the invention according to claim 1 is a cassette that is rotated by a driving force of a loading motor and is an operation from a cassette ejection state to a cassette storage. A cassette deck having a cam gear for operating a tape loading mechanism that performs operations such as loading and tape reproduction / recording, and a rotary switch that is attached to the cam gear in the cassette deck and rotates with the rotation of the cam gear. In the cassette deck for detecting the cassette loading state and the tape loading state by detecting the rotation phase and controlling the loading operation, the rotary switch detects the rotation phase. A terminal that outputs to the board. A base to be mounted, a rotating body disposed on the upper surface of the base, and a hook portion projecting on the upper surface of the rotating body to form a substantially T-shaped fitting piece, and the cam gear projects to the lower surface. The hook portion in which the substantially T-shaped fitting groove is formed and the fitting piece of the hook portion of the rotating body and the fitting groove of the hook portion of the cam gear are fitted together, thereby the rotating body and the cam gear. Is characterized in that it is detachably integrated by a slide.

  The invention according to claim 2 rotates in accordance with a cassette loading operation which is an operation from the cassette ejection state to the cassette storage in the cassette deck and a tape loading operation mode in which operations such as tape reproduction / recording are performed. The cassette deck rotary switch used for detecting the state of the tape and the tape loading state and controlling the loading operation has a base attached to the substrate and a hook portion disposed on the upper surface of the base. The hook portion is configured to be connected to a hook portion formed on a cam gear which is a part of a mechanism in the cassette deck by a sliding hook structure so as to be integrally rotatable.

  According to a third aspect of the present invention, the hook structure includes a hook portion protruding from the upper surface of the rotating body to form a substantially T-shaped fitting groove, and a substantially T-shaped fitting protruding from the lower surface of the cam gear. A mating piece is formed, and the fitting groove of the hook portion of the rotating body and the fitting piece of the hook portion of the cam gear are fitted together so that the rotating body and the cam gear are detachably integrated. ing.

  According to the first aspect of the present invention, the upper and lower members including the substrate are simply fitted into the hook portion having the fitting piece provided on the rotating body and the hook portion having the fitting groove provided on the cam gear. Since it can be attached, the number of screws for fixing the board can be reduced, the number of parts and man-hours can be reduced, and the rotary switch can be easily positioned. Furthermore, the rotating body and the cam gear can be easily integrated simply by fitting the fitting piece of the hook portion on the upper surface of the rotating body and the fitting groove of the hook portion on the lower surface of the cam gear.

  According to the second aspect of the present invention, since the rotating body and the cam gear can be integrated by the sliding hook structure of the rotating body and the cam gear, the number of screws for fixing the substrate can be reduced. Therefore, the number of parts and man-hours can be reduced, and the rotary switch can be easily positioned.

  According to the third aspect of the present invention, the rotating body and the cam gear can be easily integrated simply by fitting the fitting groove of the hook portion on the upper surface of the rotating body and the fitting piece of the hook portion on the lower surface of the cam gear. can do.

  Embodiments of a rotary switch for a cassette deck according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a rear view showing the entire structure of a deck main body portion provided with a rotary switch for a cassette deck according to the present invention, FIG. 2 is a plan view of the deck main body portion, and FIG. 3 is an outline of an embodiment of a rotary switch for a cassette deck. FIG. 4 is a plan view of the rotary switch as viewed from the front, (a) is a front view of the fitted state, (b) is a front view of the state before the fitting, FIG. These show the fitting state seen from the side of the rotary switch, (a) is a side view of the fitted state, (b) is a side view of the state before the fitting.

  As shown in FIGS. 1 and 2, the rotary switch of the cassette deck according to the present embodiment is configured such that the cam gear 2 of the rotary switch 1 is rotated by a loading motor 4 via a belt 3. When the cam gear 1 is rotated, the mode lever 5 is moved back and forth to perform cassette loading and tape loading operations. Cassette loading refers to the operation from the cassette ejected state to the cassette storage, which is rotated by the driving force of the loading motor 4, and tape loading refers to operations such as tape reproduction / recording.

  As shown in FIGS. 4 (a), 4 (b), 5 (a) and 5 (b), the cam gear 2 of the rotary switch 1 includes a first gear 1a and a screw gear 6 that mesh with the cassette loading gear from above. The second gear 1b meshes with the mode lever 5 (see FIG. 1) and the third gear 1c meshes with the mode lever 5. The cam gear 2 is rotatably attached to the deck chassis 7.

  The lower part of the rotary switch 1 includes a base 9 attached to the substrate 8 and a rotating body 10 disposed on the upper surface of the base 9. The rotating body 10 rotates integrally with the cam gear 2. The hook structure in which the rotating body 10 and the cam gear 2 are connected by a sliding hook structure has a hook portion 11 that protrudes from the upper surface of the rotating body 10 and has a substantially T-shaped fitting piece 11a. , And a hook portion 12 protruding from the lower surface of the cam gear 2 and having a substantially T-shaped fitting groove 12a.

  And the fitting body 11a of the hook part 11 of the rotary body 10 and the fitting groove 12a of the hook part 12 of the cam gear 2 are fitted together so that the rotary body 10 and the cam gear 2 are detachably integrated. It has become.

  According to the rotary switch of the cassette deck of this embodiment, the fitting piece 11a of the hook portion 11 of the rotating body 10 and the fitting groove 12a of the hook portion 12 of the cam gear 2 are fitted, whereby the rotation on the substrate 8 side. Since the body 10 and the cam gear 2 are integrally attached, the number of screws for fixing the board can be reduced, the number of parts and man-hours can be reduced, and the rotary switch can be easily positioned.

  Needless to say, a fitting groove may be provided in the hook portion 11 of the rotating body 10, a fitting piece may be provided in the hook portion 12 of the cam gear 2, and these may be fitted together.

It is a reverse view which shows the whole structure of the deck main-body part in which the rotary switch of the cassette deck of this invention was provided. It is a top view of the same deck main-body part. It is a schematic top view of embodiment of the rotary switch of a cassette deck. The fitting state seen from the front of the rotary switch is shown, (a) is a front view of the fitted state, and (b) is a front view of the state before the fitting. The fitting state seen from the side of the rotary switch is shown, (a) is a side view of the fitted state, and (b) is a side view of the state before the fitting.

It is a schematic plan view of embodiment of the rotary switch of the cassette deck of this invention.
The rotary switch of the conventional cassette deck is shown, (a) is the schematic plan view, (b) is the front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary switch 1a 1st gear 1b 2nd gear 1c 3rd gear 2 Cam gear 3 Belt 4 Loading motor 5 Mode lever 6 Screw gear 7 Deck chassis 8 Board | substrate 9 Base 10 Rotating body 11 Hook part 11a Fitting piece 12 Hook part 12a Fitting Groove

Claims (3)

A cassette deck having a cam gear that operates by a driving force of a loading motor and operates a tape loading mechanism that performs operations such as cassette loading and tape reproduction / recording from the cassette ejection state to cassette storage; and the cassette deck A rotary switch attached to the cam gear and rotating with the rotation of the cam gear, and detecting the rotation phase to detect the cassette loading state and the tape loading state. In the cassette deck for controlling the loading operation, the rotary switch has a terminal for outputting a signal for detecting a rotation phase, a base attached to the substrate by the terminal, and a rotating body disposed on the upper surface of the base. Projected on top of this rotating body A hook portion formed with a substantially T-shaped fitting piece, and the cam gear protrudes from the lower surface to form a hook portion with a substantially T-shaped fitting groove. A cassette deck in which the rotating body and the cam gear are detachably integrated by sliding by fitting a piece and a fitting groove of a hook portion of the cam gear. The cassette deck rotates from the cassette ejection state to the cassette storage in the cassette deck and rotates according to the tape loading operation mode that performs operations such as tape reproduction and recording, and the cassette loading state and the tape loading state are changed. In a rotary switch of a cassette deck used for detecting and controlling these loading operations, the hook unit includes a base attached to a substrate and a rotating body having a hook portion disposed on an upper surface of the base. Is a cassette deck rotary switch that is connected to a hook portion formed on a cam gear, which is a part of the mechanism in the cassette deck, and is connected by a slide type hook structure so as to be integrally rotatable. . The hook structure protrudes from the upper surface of the rotating body to form a substantially T-shaped fitting groove, and projects from the lower surface of the cam gear to form a substantially T-shaped fitting piece. The rotating body and the cam gear are detachably integrated by fitting the fitting groove of the lower hook portion of the rotating body and the fitting piece of the upper hook portion of the cam gear. 2. A cassette deck rotary switch according to 2.

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