KR100461294B1 - Pinch roller assembly for tape recorder - Google Patents

Abstract

A pinch roller assembly of a tape recorder is disclosed. The pinch roller assembly of the tape recorder according to the present invention includes a pinch roller which is moved so as to closely adhere the magnetic tape to the capstan shaft by a main slide member which slides inside the deck when the magnetic tape is loaded, and a first hinge shaft formed at one end thereof. As a reference, the first pivotal arm is pivotally installed inside the deck and the pinch roller is installed at its tip, and the first pivotal arm is pivotably installed inside the deck based on the second hinge axis formed at one end. It includes a second pivoting arm for rotating by interfering. According to this, the first pivotal arm and the second pivotal arm have different hinge axes and are freely connected to each other so that the pinch rollers can be prevented from being damaged by the pressing force of the main slide member, thereby preventing damage to the magnetic tape.

Description

Pinch roller assembly for tape recorder}

The present invention relates to a tape recorder, and more particularly, to a pinch roller assembly that closely adheres a magnetic tape to a capstan shaft when the magnetic tape is loaded.

Typically, a tape recorder having a deck mechanism such as a video tape recorder (VTR), a digital audio tape (DAT), a camcorder (CAMCORDER), or the like, is a recording medium that travels along a predetermined driving path, that is, voice and The device records / reproduces video information.

1 and 2 illustrate a moving deck 100 of a camcorder having a main deck 110 and a sub deck 120 slidably installed on the main deck 110 of the conventional tape recorder. According to the present invention, the tape recorder includes a driving driver for driving the magnetic tape, a tape driving guide device 150 for guiding the magnetic tape traveling inside the deck 100 by driving the driving driver, and loading / loading of the magnetic tape. The tape driving guide apparatus 150 includes a loading driving unit for moving the components of the tape driving guide device 150 to a predetermined position during unloading. The driving unit includes a capstan motor 140, a pair of reel tables 171, 173, and the like, and the loading driving unit is interlocked with the loading motor 170 and the loading motor 170. And a main slide member 175 reciprocating between the 110 and the sub deck 120. On the other hand, the main slide member 175 has a plurality of guide holes 177 formed in a predetermined shape so that the components of each of the tape guide device 150 are moved along a predetermined trajectory when the magnetic tape is loaded / unloaded.

The tape travel guide device 150 includes a pair of pole base assemblies 151 and 152 which draws the magnetic tape from the tape cassette (not shown) and closely adheres to the head drum 130 when the magnetic tape is loaded. The tension pole assembly 153 and the review pole assembly 155 which pull the magnetic tape to the left and right sides of the deck 100 to give a predetermined tension to the magnetic tape in close contact with the drum 130, and the magnetic tape is attached to a capstan motor ( And a pinch roller assembly 160 in close contact with the capstan shaft 142 of the 140.

As shown in FIG. 2, the pinch roller assembly 160 includes a pivot arm 162 rotatably installed on the sub deck 120 and a pinch roller 161 supported at the tip of the pivot arm 162. Include. The pivot arm 162 is rotatably installed on the sub deck 120 based on the hinge axis 164 and includes a protrusion 166 protruding from the lower surface thereof. The protrusion 166 may be inserted into one of the guide holes 177 of the main slide member 175 when the pinch roller assembly 160 is installed.

The pivoting arm 162 of the pinch roller assembly 160 configured as described above interferes with the protrusion 166 by the guide hole 177 of the main slide member 175 sliding inside the deck 100 when the magnetic tape is loaded. As it rotates based on the hinge axis (164). As a result, the pinch roller 161 moves in the direction in close contact with the capstan shaft 142.

However, as the pivoting arm 162 is rotated as described above, as the lower end of the protrusion 166 having a predetermined interval with the body is pressed, as shown by the arrow shown in FIG. 2, the central axis of the pivoting arm 162. The rotational force with (X) as the center of rotation is generated and the body is distorted. Accordingly, the pinch roller 161 in close contact with the capstan shaft 142 is often caused to rise.

When the pinch roller 161 flows upward in this way, the traveling of the magnetic tape traveling between the pinch roller 161 and the capstan shaft 142 flows up and down, thus causing a problem of damage to the magnetic tape. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a pinch roller assembly of a tape recorder which is improved to prevent the pinch roller from injuring when the magnetic tape is loaded, thereby preventing the magnetic tape from being damaged during driving. There is a purpose.

1 is a perspective view showing a deck of a conventional tape recorder,

Figure 2 is a perspective view showing a state in which the pinch roller assembly of Figure 1 mounted on the deck,

3 is a perspective view showing a mounting state of the pinch roller assembly of the tape recorder according to the present invention;

Figure 4 is an exploded perspective view of the pinch roller assembly of Figure 3;

Explanation of symbols on the main parts of the drawings

100: Deck 110: Main Deck

120: sub deck 130: head drum

140: capstan motor 142: capstan shaft

150: tape running guide portion 151, 152: pole base assembly

153: tension pole assembly 155: review pole assembly

170: loading motor 175: main slide member

177: guide ball 260: pinch roller assembly

261: pinch roller 262: first rotating arm

263: through hole 264: first rotating shaft

265: second rotating arm 266: first projection

266a: projection body 266b: flange portion

267: second hinge axis 268: second projection

The pinch roller assembly of the tape recorder according to the present invention for achieving the above object is moved to draw the magnetic tape from the tape cassette to be in close contact with the capstan shaft by the main slide member sliding in the deck when the magnetic tape is loaded. Rotating inside the deck based on the first pivot arm provided with the pinch roller, the first hinge shaft formed at one end and the pinch roller installed at the distal end thereof, and the second hinge shaft formed at the one end. It is installed to be possible, and characterized in that it comprises a second pivoting arm which is interlocked with the main slide member for interfering with the first pivotal arm.

According to a preferred embodiment of the present invention, the second pivotal arm includes: a first protrusion which protrudes from an upper surface and is inserted into a through hole of the first pivotal arm; And a second protrusion protruding from the bottom surface and interfering with and interlocked with the main slide member.

In addition, the second pivotal arm may be installed to be inserted into the guide hole of the main slide member so that the second protrusion is rotated in conjunction with the main slide member that reciprocally slides during loading / unloading of the magnetic tape. .

In addition, the first protrusion, the pillar-shaped body is inserted into the through hole; And a flange portion extending from the upper end of the body to have a width larger than the width of the through hole to restrict the flow of the first pivotal arm upward.

According to this, the first pivotal arm and the second pivotal arm have different hinge axes and are freely connected to each other so that the pinch rollers can be prevented from being damaged by the pressing force of the main slide member, thereby preventing damage to the magnetic tape.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. On the other hand, the components described above and having the same configuration and function as those of the conventional tape recorder shown in Figs. 1 and 2 are denoted by the same reference numerals as before, and detailed description thereof will be omitted.

3 and 4, the pinch roller assembly 260 according to the present invention includes a pinch roller 261, a first pivot arm 262, and a second pivot arm 265. The first pivotal arm 262 and the second pivotal arm 265 are in close contact with the capstan shaft 142 by interlocking with the main slide member 175 sliding inside the deck 100 when the magnetic tape is loaded. It is for moving the pinch roller 261 to make it.

The first pivotal arm 262 is formed in a bar shape in which a pinch roller 261 is supported at the front end thereof, and has a deck (rotation) based on the first hinge shaft 264 formed at one end thereof. 100) It is installed inside. The first pivotal arm 262 in this embodiment is installed on the sub deck 120 reciprocally sliding on the main deck 110 during loading / unloading of the magnetic tape, the through hole 263 is formed in the center portion thereof. do. The through hole 263 is formed in a shape that is easy to insert the first protrusion 266 of the second pivoting arm 265 to be described later, the first protrusion 266 when the first protrusion 266 is inserted. Regarding the force acting in the axial direction, the first protrusion 266 can be freely lifted and formed so as to receive only the force acting in the direction perpendicular to the axial direction.

The second pivotal arm 265 is a second pivotal arm body 265a rotatably installed at a lower portion of the first pivotal arm 262, separately from the first pivotal arm 262, and the second pivotal arm body. And a first protrusion 266 protruding from the upper surface of 265a and a second protrusion 268 protruding downward from the lower surface of the second pivotal arm body 265a. In the present embodiment, the second pivotal arm body 265a is rotated on the sub deck 120 so as to be rotated based on the second hinge axis 267 which is installed to be spaced apart from the first hinge axis 264 by a predetermined distance. Is installed.

The lower end of the second protrusion 268 is inserted into any one of the guide holes 177 of the main slide member 175 when the second pivot arm 265 is installed. Accordingly, when the sub deck 120 and the main slide member 175 slide on the main deck 110 when the magnetic tape is loaded / unloaded, the second protrusion 268 interferes with the main slide member 175. As a result, the second pivotal arm body 265a integrally formed with the second projection 268 is rotated using the second hinge shaft 267 as the rotation center.

The first protrusion 266 is to transmit the rotational force of the second pivot arm 265 to the first pivot arm 262, and includes a projection body 266a and a flange 266b. The protruding body 266a protrudes from the upper surface of the second pivotal arm 265 in a columnar shape and its tip is inserted into the through hole 263 of the first pivotal arm 262 when the pinch roller assembly 260 is assembled. do. At this time, the protruding body 266a is inserted into the through hole 263 so as to freely move up and down so that the lifting force is not transmitted to the first rotating arm 262 even when the second rotating arm 265 is raised. In this case, a predetermined interval is formed between the second pivotal arm 265 and the first pivotal arm 262 such that the second pivotal arm 265a that is swinging up and down does not directly contact the first pivotal arm 262. It is preferable. Thus, the method of suppressing the rotational force of the second pivotal arm 265 from being transmitted to the first pivotal arm 262 is not limited to the present embodiment, and various modifications are possible. That is, the grooves formed by cutting one side of the first pivotal arm 262 instead of the through hole 263 may be modified in various forms such that the first protrusion 266 is inserted.

The flange portion 266b is formed at the tip of the protrusion body 266a that penetrates the through hole 263 and is exposed to an upper side of the first pivot arm 262, and has a width wider than that of the through hole 263. It is formed by expanding the outer diameter of the projection body (266a) to have a. According to this, even if the first rotating arm 262 is to be raised by an external force, the through hole 263 is caught by the flange portion 266b, so that the rising of the first rotating arm 262 can be suppressed.

The operation of the pinch roller assembly of the tape recorder according to the preferred embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

First, when a tape cassette (not shown) is mounted on the sub deck 120, as the loading motor 170 is driven, the sub deck 120 slides in the direction of the head drum 130 on the main deck 110. At this time, the second protrusion 268 of the second pivoting arm 265 slides along the guide hole 177 while being inserted into the guide hole 177 of the main slide member 175.

When the loading of the tape cassette is completed, the magnetic tape loading operation is started to take out the magnetic tape from the tape cassette and closely adhere to the head drum 130. At this time, the loading motor 170 is further driven so that the main slide member 175 The main deck 110 is slidably moved toward the supply reel 171. At this time, since the main slide member 175 moves while the second protrusion 268 of the second pivotal arm 265 is inserted into the guide hole 177, the second pivotal arm 265 is the main slide member. Interfering with 175, the second hinge shaft 267 is rotated as the center of rotation. As such, when the second pivoting arm 265 is rotated, the rotational force is transmitted to the through hole 263 into which the first protrusion 266 is inserted, so that the first pivotal arm 262 also moves the first hinge shaft 264. It is rotated on the basis of rotation.

Here, in the second pivotal arm body 265a of the second pivotal arm 265, the lower end of the second projection 268 which is at a predetermined distance from the second pivotal arm body 265a is provided on the main slide member 175. Since it is pressurized, a rotational force acting on the center X of the second pivoting arm 265 as the rotation center is applied. However, when the pressing force of the main slide member 175 is transmitted from the second pivotal arm 265 to the first pivotal arm 262, the rotational force is freely provided by the first projection body 266a inserted into the through hole 263. It is offset by rising. Accordingly, the first pivotal arm 262 rotates without distortion due to the rotational force, and the rise of the pinch roller 261 is suppressed.

In this case, the first pivotal arm 262 flowing upward due to an external impact or the like may be suppressed by the flange portion 266b of the first protrusion 266.

When the magnetic tape is unloaded, the deck 100 is operated in the reverse order as described above. Accordingly, the pinch roller 261 is spaced apart from the capstan shaft 142 to return to the original position.

On the other hand, as described above, the pinch roller assembly of the tape recorder according to the present invention has been described taking the case of a camcorder as an example, but this is a tape recorder having a deck mechanism such as a video tape recorder (VTR) and a digital audio tape (DAT). Of course, all of them are applicable.

In the pinch roller assembly according to the present invention configured as described above, the pinch roller is connected to the main slide member through the first pivotal arm and the second pivotal arm, and the first pivotal arm and the second pivotal arm have different hinge axes and are free from each other. Elevation is possible. As a result, the rotational force of the second pivotal arm caused by the pressing force of the main slide member is suppressed by the interaction between the first pivotal arm and the second pivotal arm, and the transfer of the rotational force to the first pivotal arm is suppressed.

Therefore, when the magnetic tape is loaded, the pinch roller that is moved to be in close contact with the capstan shaft is prevented, so that the magnetic tape traveling between the capstan shaft and the pinch roller can travel without flowing up and down, thereby suppressing damage to the magnetic tape. can do.

While the invention has been shown and described with respect to preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that various changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (4)

In the pinch roller assembly comprising a pinch roller which is slid inside the deck when the magnetic tape is loaded and is moved to draw the magnetic tape from the tape cassette and adhere to the capstan shaft by the main slide member having a guide hole. A first pivotal arm rotatably installed in the deck based on a first hinge shaft formed at one end thereof, having a through hole formed in the middle thereof, and the pinch roller installed at a tip thereof; And A first projection part rotatably installed in the deck based on a second hinge axis formed at one end and protruding from an upper surface and inserted into a through hole of the first pivot arm, and protruding from a lower surface to the main slide member And a second pivotal arm including a second protrusion interlocked with each other. The second pivotal arm is installed so that the second projection is inserted into the guide hole of the main slide member, the tape is rotated in conjunction with the main slide member reciprocating sliding during loading / unloading of the magnetic tape Pinch roller assembly of recorder. delete delete The method of claim 1, wherein the first protrusion, A projection body inserted into the through hole; And And a flange portion extending from the upper end of the body to have a width greater than the width of the through hole to restrict the first pivotal arm from flowing upward.