JP3091772U - Rotation transmission mechanism in VCR - Google Patents

Abstract

(57) [Summary] [Problem] When switching from normal rotation to high speed rotation,
Provided is a rotation transmission mechanism in a video deck device that can smoothly switch to high-speed rotation without once stopping a drive motor or the like and reduce the load on the drive motor. SOLUTION: A first belt 5 is wound around a pulley 3 attached to a shaft portion of a drive motor 2 which is a capstan motor of an apparatus main body 1 and an upper pulley portion 4a of a drive side rotator 4, and the drive side rotator 4 is placed upward. And the driven rotator 6 has a substantially conical shape tapered from the lower side to the upper side, and can be moved up and down between the driving rotator 4 and the driven rotator 6. The first belt 9 is attached to the lower part of the driven-side rotator 6 and the first gear 9 is attached to the lower side of the driven-side rotator 4. A second gear 10 that rotates freely with respect to the support shaft 4b is provided, and the second gear 10 and the first gear 9 are engaged to rotate the reel gear.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a rotation transmission mechanism in a video deck device.

[0002]

[Prior art]

 In the conventional VCR, the rotation transmission mechanism switches from normal to high speed. When switching, stop the drive motor and switch the gears of the rotation transmission mechanism. It is also necessary that the drive motor be loaded when starting in high speed gear. There was a problem.

[0003]   Further, Japanese Patent Application Laid-Open No. 60-38749 discloses a tape running of a tape recorder device. The drive mechanism is described.   As shown in FIGS. 5 (a) and 5 (b), this is the first rotating body that is interlocked with the tape running. 131 and the one that is engaged with the first rotating body 131 A conical second rotation that gives a rotational force to the first rotating body 131 by being rotated. The body 132 and the second rotating body 132 are slidable in the axial direction so that the motor 11 Support for supporting the first rotating body 131 in contact with the first rotating body 131 with a strength corresponding to the first rotating force. The mechanism 114, 141, 122, 123 and the large-diameter portion of the second rotating body 132 are And an urging means 130 for urging the rotor 131 in the axial direction so as to hit the rotor 131. It is a thing.   However, in this, the second rotating body 132 having a truncated cone shape is attached to the idler 12 Since the rotation of the rotating body 132 is transmitted to the idler 125 by making a surface contact with 5, However, there was a problem that the contact surface was worn out and the durability was poor.

[0004]   Further, Japanese Utility Model Publication No. 2-5129 discloses a tape winding device.   This is a truncated cone shape as shown in FIG. 6, FIG. 7 (a) (b), and FIG. 8 (a) (b). And two reel bases 212 and 213 formed on the base, and a motor 209 capable of rotating in the forward and reverse directions. , The first gear 217 rotated by the motor 209 and the rotation of the first gear 217. A swing arm 2 which is supported by a pivot shaft 214 and swings between the reel stands 212 and 213. 18 and a support shaft 220 provided at the tip of the arm 218 so as to be rotatable and axially movable. A second gear 221 that is movably supported and meshes with the first gear 217; By swinging the swing arm 218 provided by the rotation of the first gear 217 provided on the gear 221, And a conical portion 222 that is joined to one outer peripheral surface of each of the reel stands 212 and 213. It is a thing.   However, in this case as well, the conical portion 222 of the first gear 217 is taken up by the take-up reel stand. The take-up reel base 212 is rotated by bringing the inclined peripheral surface of the 212 into surface contact. Therefore, there is a problem that the contact surface is worn away and the durability is poor.

[0005]

[Problems to be solved by the device]

  The present invention solves the above-mentioned conventional problems, and when switching from normal to high speed rotation Smoothly switching to high-speed rotation without stopping the drive motor etc. Rotation transmission mechanism in a VCR device that can reduce the load on the drive motor Is intended to provide.

[0006]

[Means for Solving the Problems]

  The present invention has been proposed to solve the above problems, and is described in claim 1. The idea of the mounting is the shaft of the drive motor that consists of the capstan motor provided in the device body. And the upper pulley of the rotating body on the drive side of the clutch assembly. The first belt is stretched around the rear part, and this drive side rotating body is directed from the upper side to the lower side. It has a generally conical shape that becomes thinner, and the driven-side rotating body is tapered from the bottom to the top. It has a substantially conical shape, and is placed between the drive-side rotating body and the driven-side rotating body. A second belt that can be moved downward is stretched around, and the second belt is further moved up and down. And the first gear is integrally attached to the lower part of the driven side rotating body. And is free to rotate below the drive side rotating body with respect to the support shaft of the drive side rotating body. A second gear is provided, and the second gear and the first gear are meshed with each other. The reel gear is configured to rotate by the rotation of the gear, and the vertical movement means is As the second belt is moved up and down, the second belt is moved up and down. The rotation of the driving side rotating body is decelerated or accelerated via the The driven-side rotating body is rotated, and the rotation of the driven-side rotating body is performed via the first gear and the second gear. The feature is that the Lugear is rotated at deceleration or acceleration.

[0007]   According to a second aspect of the present invention, there is provided a pulley and a clutch mounted on a shaft portion of a drive motor. The first belt is stretched over the upper pulley part of the drive side rotating body of the chiasm assembly. , And that this drive-side rotating body has a substantially conical shape that tapers from the upper side to the lower side. In addition, the driven side rotating body has a substantially conical shape that tapers from the lower side to the upper side. A second belt, which can move up and down, is hung between the driving-side rotating body and the driven-side rotating body. Further, the second belt is moved up and down by the up-and-down moving means. The first gear is integrally attached to the lower portion of the driving side rotating body, and is attached to the lower side of the driving side rotating body. A second gear that freely rotates with respect to the support shaft of the drive-side rotating body is provided, and the second gear is provided. A gear is configured to mesh with the first gear, and the vertical movement means When the second belt is moved down, the second belt is moved up and down to move the second belt. The rotation of the driven side rotating body is decelerated or accelerated through the rotation of the driven side rotating body. The rotation of the driven side rotating body, and the rotation of the driven side rotating body is decelerated by the second gear via the first gear. It is characterized by rotating or accelerating rotation.

[0008]   According to a third aspect of the present invention, in the vertical movement means, the second belt is provided at a central portion. It is passed through and a pair of rollers holding the belt is attached to both sides of the roller Pair of small housings, a wire for moving the small housings up and down, and a wire The mode lever for extending or retracting It is characterized by that.

[0009]

[Embodiment of device]

  Hereinafter, an embodiment of a rotation transmission mechanism in a video deck device according to the present invention will be described. The description will be made with reference to the drawings.   FIG. 1 is a schematic view showing a rotation transmission mechanism in a video deck device according to an embodiment of the present invention. FIG. 2 is a perspective view, in which the second belt for changing the rotation speed of the rotation transmission mechanism is vertically moved. FIG. 3 is a perspective view of a vertical movement mechanism for moving the video, and FIG. 3 is a video having the rotation transmission mechanism. Schematic plan view showing the main part of the deck device, FIG. 4 shows a video deck device, (a) is The plan view and (b) are the bottom views.

[0010]   The rotation transmission mechanism in the video deck device of this embodiment is shown in FIGS. As described above, the shaft portion of the drive motor 2 including the capstan motor provided in the apparatus main body 1 Attached to the pulley 3 and the upper side of the rotating body 4 on the drive side of the clutch assembly. The first belt 5 is stretched around the pulley portion 4a, and the driving-side rotating body 4 is moved downward from above. It has a substantially conical shape that becomes finer toward the side, and the driven side rotating body 6 is from below. It has a substantially conical shape that becomes finer toward the upper side, and is driven by the drive-side rotating body 4 and the driven body. A second belt 7 that can move up and down is stretched between the side rotating body 6. Furthermore, this The second belt 7 is configured to be vertically moved by the vertical moving means 8.   Further, the first gear 9 is integrally attached to the lower part of the driven-side rotating body 6 so that the drive-side rotation is performed. A second gear 10 that freely rotates below the body 4 with respect to the support shaft 4b of the drive-side rotating body 4 And the second gear 10 and the first gear 9 are meshed with each other. Rotation of reel 12 (see FIG. 4) through gear group 11 (see FIG. 3) The reel gear (not shown) is configured to rotate.

[0011]   In addition, as shown in FIG. 2, the vertical movement means is such that the second belt 7 is passed through the central portion. , A pair of rollers 13, 13 holding the belt 7 on both sides are attached and both sides are opened. The pair of released small housings 14, 14 and the small housings 14, 14 are moved up and down. Wires 15 and 15 and the operation of pulling or pulling the wires 15 and 15 It is composed of a mode lever 16 for operating. Mode lever 16 is on both sides On a rotating shaft 18 rotatably laid between a pair of support plates 17, 17 erected on the Wires 15 and 15 are attached upward when they are attached and the front operation part 16a is pushed. The wires 15 and 15 are pulled downward when the operating portion 16a is pulled up. Then, the small casings 14 and 14 move vertically, and the second belt 7 moves vertically. It is supposed to be moved.

[0012]   Then, by operating the mode lever 16 of the vertical moving means 8 up and down, The small casings 14, 14 are moved up and down via the wires 15, 15 so that the second belt 7 is It is moved up and down to decelerate or rotate the rotation of the drive-side rotating body 4 via the second belt 7. Accelerates the driven side rotating body 6 to rotate, and the driven side rotating body 6 is rotated by the first gear. 9, the reel 12 (see FIG. 4) through the second gear 10 and the gear group 11 (see FIG. 3) The reel gear (not shown) that rotates the It   As shown in FIG. 3, the gear group 11 includes an idler 13 that meshes with the second gear 10. , The reel 12 and the intermediate gear 14 with which the idler 13 separates or abuts And a gear train 15 composed of a plurality of gears meshing with the rotating reel gear. It   In addition, the drive motor 2 composed of a capstan motor, as shown in FIG. It is arranged on the left side of the apparatus body 1 in a substantially central portion.   The driven-side rotating body 6 is omitted in FIG.

[0013]   Therefore, according to the rotation transmission mechanism of the video deck device of the present embodiment, When switching from round to high-speed rotation, without stopping the drive motor etc. once, The advantage is that you can smoothly switch to high-speed rotation and reduce the load on the drive motor. There is.

[0014]

[Effect of device]

  As described above, the device according to claim 1 is the cap provided on the main body of the apparatus. The pulley and clutch assembly attached to the shaft of the drive motor consisting of a stun motor. The first belt is stretched around the upper pulley portion of the drive side rotating body of the assembly, The drive-side rotating body has a substantially conical shape that tapers from the upper side to the lower side. The moving side rotating body has a substantially conical shape that tapers from the lower side to the upper side. A vertically movable second belt is stretched between the driving side rotating body and the driven side rotating body, Further, the second belt is moved up and down by the up-and-down moving means, and the driven-side rotating member is moved. The first gear is integrally attached to the lower part of the A second gear that freely rotates with respect to the support shaft is provided, and the second gear and the first gear are provided. Is engaged with and the reel gear is rotated by the rotation of the second gear. Then, the vertical movement means moves up and down to move the second belt up and down, The rotation of the drive side rotating body is decelerated or accelerated through the second belt to rotate the driven side. The rolling element is rotated, and the rotation of the driven-side rotating element is rotated through the first gear and the second gear. Since the gears are rotated at deceleration or acceleration, the following effects are achieved. It

[0015]   In other words, when switching from normal to high speed rotation, the It is possible to smoothly switch to high-speed rotation without stopping the drive motor etc. Video deck that can reduce the load on the drive motor that is a capstan motor An object is to provide a rotation transmission mechanism in an apparatus.

[0016]   According to a second aspect of the present invention, there is provided a pulley and a clutch mounted on a shaft portion of a drive motor. The first belt is stretched over the upper pulley part of the drive side rotating body of the chiasm assembly. , And that this drive-side rotating body has a substantially conical shape that tapers from the upper side to the lower side. In addition, the driven side rotating body has a substantially conical shape that tapers from the lower side to the upper side. A second belt, which can move up and down, is hung between the driving-side rotating body and the driven-side rotating body. Further, the second belt is moved up and down by the up-and-down moving means, and the driven side The first gear is integrally attached to the lower part of the rotary body, and the drive side rotation is installed below the drive side rotary body. A second gear, which rotates freely with respect to the support shaft of the rolling element, is provided. One gear is configured to mesh with each other, and the vertically moving means is vertically moved. The second belt is moved up and down by the Rotate the driven side rotating body by decelerating or accelerating the rotation, and rotate the driven side rotating body. Since the second gear is rotated at a reduced speed or at an accelerated speed via the first gear, The following effects are achieved.

[0017]   That is, when switching from normal to high speed rotation, stop the drive motor etc. once Can be smoothly switched to high-speed rotation, and the load on the drive motor can be reduced. Can be reduced.

[0018]   According to a third aspect of the invention, in the vertical movement means, the second belt is passed through the central portion, A pair of rollers that holds the belt on both sides of the roller Small enclosures, wires that move these small enclosures up and down, and wires that extend and control Since it is composed of a mode lever for operating or retracting, It is possible to move up and down a small case through which the cable is passed by simply operating the mode lever. Yes, it is easy to operate, and the wire can be moved up and down with certainty, and it rotates at low speed. You can switch between high speed rotation and high speed smoothly by simply operating the mode lever. Wear.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a rotation transmission mechanism in a video deck device according to an embodiment.

FIG. 2 is a perspective view of a vertical movement mechanism for vertically moving a second belt for changing the rotation speed in the rotation transmission mechanism.

FIG. 3 is a schematic plan view showing a main part of a video deck device having the rotation transmission mechanism.

FIG. 4 shows a video deck device, (a) is a plan view thereof, and (b) is a bottom view thereof.

5A and 5B show a tape running drive mechanism of a conventional tape recorder device, FIG. 5A is a plan view thereof, and FIG. 5B is a front view thereof.

FIG. 6 is a partial perspective view showing a conventional tape winding device.

FIG. 7 shows a tape winding operation at a light load in the apparatus, (a) is a front view thereof, and (b) is a bottom view thereof.

FIG. 8 shows a tape winding operation under heavy load in the apparatus, (a) is a front view thereof, and (b) is a bottom view thereof.

[Explanation of symbols]

1 device body 2 drive motor 3 pulleys 4 Drive side rotating body 4a Upper pulley part 4b support shaft 5 First Belt 6 Driven side rotating body 7 Second belt 8 Vertical movement means 9 First gear 10 2nd gear 11 Gear County 12 reel 13 Roller 14 small housing 15 wires 16 Mode lever 17 Support plate 18 rotation axis

Claims (3)

[Scope of utility model registration request] 1. A first belt is stretched around a pulley attached to a shaft portion of a drive motor composed of a capstan motor provided in a main body of the apparatus and an upper pulley portion of a drive side rotating body of a clutch assembly, and this drive is performed. The side rotating body has a substantially conical shape that narrows from the upper side to the lower side, and the driven side rotating body has a substantially conical shape that narrows from the lower side to the upper side. A second belt that can move up and down is hung between the side rotating body,
Further, the second belt is moved up and down by the up-and-down moving means, the first gear is integrally attached to the lower part of the driven side rotating body, and the driving side rotating body is supported below the driving side rotating body. A second gear that freely rotates with respect to the shaft is provided, the second gear and the first gear are meshed with each other, and the reel gear is rotated by the rotation of the second gear. Is moved up and down, the second belt is moved up and down, the rotation of the driving side rotating body is decelerated or accelerated through the second belt to rotate the driven side rotating body, and the driven side rotation is performed. A rotation transmission mechanism in a video deck device, characterized in that the rotation of the body is made to decelerate or accelerate by rotating the reel gear via the first gear and the second gear. 2. A first belt is stretched around a pulley attached to a shaft portion of a drive motor and an upper pulley portion of a drive side rotating body of a clutch assembly, and the drive side rotating body is directed from the upper side to the lower side. The driven-side rotating body has a substantially conical shape that narrows, and the driven-side rotating body has a substantially conical shape that narrows from the lower side toward the upper side, and is vertically movable between these driving-side rotating body and driven-side rotating body. The second belt is stretched over, and the second belt is further moved up and down by the up-and-down moving means. The first gear is integrally attached to the lower portion of the driven-side rotating body, and A second gear that freely rotates with respect to the support shaft of the drive-side rotating body is disposed on the lower side, and the second gear and the first gear are configured to mesh with each other. The second by being moved The belt is moved up and down, this second
The rotation of the driving-side rotating body is decelerated or accelerated by the belt to rotate the driven-side rotating body, and the rotation of the driven-side rotating body is decelerated or accelerated by the second gear via the first gear. A rotation transmission mechanism in a video deck device, which is adapted to rotate. 3. A pair of small housings, in which the second belt is passed through a central portion, a pair of rollers for holding the belt are attached to both sides of the second belt, and the both sides are open, and the small belts. The rotation transmission device in a video deck device according to claim 2, wherein the rotation transmission device is composed of a wire for moving the housing up and down and a mode lever for extending or retracting the wire.