KR200147773Y1 - Cassette tape loading/unloading device - Google Patents

Abstract

The present invention relates to a cassette tape insertion and withdrawal device, and according to the present invention, the first side wall 33 and the second side wall 34, the cassette holder 35, and the cassette holder 35 in the cassette tape ( A rack having a front surface 32 having an insertion opening 42 through which 41 can be inserted or taken out, and a rack having a first rack 53 and a second rack 54 formed on the side of the first side wall 33. Gear 36, pinion gear 37 meshing with the first rack 53, dual gear 38 meshing with the pinion gear 37, meshing with the dual gear 38 and integral with the arm 51; In the cassette tape insertion and take-out device provided with the first arm gear 39 and the shaft gear 40 formed of the double gear 38, the double gear 38 includes a plurality of engaging projections 64, a lower clasp 63, and a central portion. The shaft 69 is integrally formed in the lower gear 61, the coupling groove 66 and the upper clasp 65 and the shaft 69 to be fitted to the pull engaging projection (64) The lower gear 61 and the upper part between the upper gear 62 formed integrally with the through-hole 68 and between the lower latch 63 of the lower gear 61 and the upper latch 65 of the upper gear 62. A cassette insertion and withdrawal device is provided, comprising a spring 67 for rotationally deflecting the gear 62 in the opposite direction. Cassette tape insertion and withdrawal device according to the present invention can prevent the improper force applied to the cassette holder can prevent the malfunction of the device

Description

Cassette tape insertion and ejection device

1 is a schematic perspective view of a cassette tape insertion and withdrawal device according to the prior art.

2 is a partial perspective view of the device of FIG.

3 is a schematic perspective view of a cassette tape insertion and withdrawal device of the present invention.

4 is a front perspective view showing a gear assembly and a main body and main components installed on the first side wall of the FIG. 3 apparatus.

5 is an exploded perspective view of the gear assembly of FIG.

6 (a) and 6 (b) are plan views according to the fire state of the dual gear.

* Explanation of symbols for the main parts of the drawings

31: top plate 33: first side wall

34: second side wall 35: cassette holder

38: double gear 61: lower gear

62: upper gear 63: lower clasp

64: engaging projection 65: upper clasp

The present invention relates to a cassette tape insertion and withdrawal device, and more particularly, to a cassette tape insertion and withdrawal device capable of applying a constant elastic force to the cassette holder before the automatic insertion action is started in driving the cassette holder.

In a video camera or video cassette tape recorder employing a front loading method, manual and automatic actions are performed simultaneously when a user inserts or ejects a cassette tape. Is mounted on the cassette holder, and when the cassette tape is completely mounted on the cassette holder, the cassette tape itself operates a switch in the housing so that the cassette holder is automatically inserted. The cassette holder finally terminates the insertion action by moving the cassette tape to the loading position on the deck. In addition, when the cassette tape is taken out, the opposite effect occurs.

However, in the inserting action of the cassette tape, it is necessary to buffer the force applied by the user by applying a constant elastic force to the cassette holder while the user pushes the cassette tape into the holder by hand. This is to prevent a problem that the cassette is detached from the holder or caught on the holder while the device operation is performed by the user applying an excessive force or an improper force to the device. Conventionally, a leaf spring provided on the side wall is used as the elastic force generating means, but this leaf spring has a disadvantage in that it does not apply an appropriate elastic force to the cassette holder.

1 shows a schematic perspective view of a cassette tape insertion and withdrawal device according to the prior art. The housing of the cassette tape insertion and withdrawal device has a front surface formed with an upper plate (1), a first side wall (2) and a second side wall (3), and an inlet (9) into which the cassette tape 11 can be inserted and taken out. 10). The user inserts the cassette tape 11 through the inlet 9, and the cassette tape 11 is placed in the cassette holder 12. Once the cassette tape is placed in the holder 12, the drive motor 13 operates by operating a switch (not shown) installed inside the cassette tape. The drive motor 13 is provided inside the first side wall f2, and the motor shaft penetrates the first side wall 2, and the motor gear 14 is attached to the end thereof. On the outside of the first side wall 2, the first gear 5, the second gear 5, the cam gear so as to transmit the driving force of the motor gear 14 to the arm gear 7 and the shaft gear 8; 6) is installed. The outside of the first side wall 2 is covered with a cover 8 formed separately. The boss 15 of the cassette holder 12 is fitted in the arm portion of the arm gear 7, which boss 15 is formed integrally with the cassette holder 12 inside the housing. It penetrates outward through). The arm gear 7 rotates at a predetermined angle, and the boss 15 moves along a predetermined path formed through the first side wall 2 as the arm gear 7 rotates. An arm gear (not shown) is provided outside the second side wall 3, and a boss integrally formed with the cassette holder protrudes outward through the second side wall 3. The shaft gear 8 meshes with the arm gear 7, wherein the shaft gear 8 of the first side wall 2 is provided with the shaft gear and the shaft 5, which are installed at opposite positions outside the second side wall 3. The driving force is transmitted by the connection. The shaft gear of the second side wall drives the arm gear of the second side wall, so that the arm gear 7 of the first side wall 2 and the arm gear outside the second side wall 3 define the cassette holder 12. Can be moved to the path of.

2 schematically shows a leaf spring installed inside the second side wall of the device of FIG. The leaf spring 21 is provided inside the second side wall 3 and also inside the first side wall 2 although not shown in the drawing. The leaf spring 21 is installed inside the second side wall 3 by the hinge 24. The leaf spring 21 has a fixing portion 22 and an elastic portion 23, wherein the fixing portion is fixed inside the second side wall 3, while the elastic portion 23 has an end portion at the side wall 3. It is not fixed and is spaced apart. When the cassette holder 12 is moved along a predetermined path, the outer surface of the side wall 25 of the cassette holder 12 presses the elastic portion 23 of the leaf spring 21, so that the elastic force is applied to the sidewall of the cassette holder. 25). This elastic force functions to cushion the force exerted by the user on the holder 12 until the cassette holder 12 is started to operate by the drive motor 13 shown in FIG. The prior art device as described above has a problem in that the elastic force is not properly transmitted to the holder. That is, since the space between the side wall 25 of the cassette holder 12 and the second side wall 3 of the housing is narrow, the thickness of the leaf spring 21 is limited, and accordingly, the leaf spring capable of applying sufficient elasticity ( 12) The design is impossible

It is an object of the present invention to provide a cassette tape insertion and withdrawal device in which an appropriate level of elastic force can be applied to a cassette holder.

Another object of the present invention is to provide a cassette tape insertion and withdrawal device which can apply elastic force to a cassette holder using a coil spring.

Another object of the present invention is to provide a cassette tape insertion and take-out apparatus in which elastic force is applied to the cassette holder when the cassette tape is inserted, while elastic force is not applied when the cassette tape is taken out.

In order to achieve the above object, according to the present invention, there is provided a first side wall and the second side wall, a cassette holder, and a front surface formed with an inlet for inserting or ejecting a cassette tape into the cassette holder, On the side of the side wall, a rack gear having a first rack and a second rack formed therein, a pinion gear meshing with the first rack, a dual gear meshing with the pinion gear, and a first arm gear meshing with the dual gear and integrally formed with the arm. And a cassette tape insertion and withdrawal device provided with a shaft gear, wherein the double gear comprises: a lower gear having a plurality of engaging projections, a lower clasp, and a central shaft integrally formed; a coupling groove and an upper clasp fitted to the engaging projection; An upper gear integrally formed with a through hole fitted into the lower gear; A cassette insertion and withdrawal device is provided, comprising a spring for rotationally deflecting the secondary gear and the upper gear in opposite directions.

According to another feature of the present invention, the upper gear meshes with the pinion gear and the lower gear meshes with the arm gear.

According to another feature of the present invention, the elastic force of the spring is greater than the sum of the moving load of the cassette holder and the rotating load of the entire gear.

According to another feature of the present invention, the elastic force of the spring is smaller than the sum of the moving load of the cassette holder, the rotational load of the entire gear, and the stationary load of the cassette holder driving motor.

Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings.

3 is a schematic perspective view of a cassette tape insertion and withdrawal device according to the present invention. The cassette tape insertion and take-out apparatus is provided with a top plate 31 having a groove 43 formed at a predetermined position, a first side wall 33 and a second side wall 34, and an inlet through which the cassette tape 41 can be inserted. 42 is formed of a housing having a front surface 32 formed thereon. The outer side of the first side wall 33 is a rack gear 36, a pinion gear 37, a double gear 38, a first arm gear 39 and A first shaft gear 40 is installed, after which the gears are covered by the outer cover. Although only the top plate 31 is shown in FIG. 2 and the cover covering the outside of the first side wall 33 is not shown, it is preferable that the outer cover is an integral chassis extending from the top plate 31, which is the first side wall. It is formed to cover all of the gear assembly. Shaft gears and arm gears are also installed outside the second side wall of the housing, which will be described in more detail later. A cassette holder 35 is provided inside the housing, and the cassette holder 35 moves through a predetermined path or vice versa so that the cassette tape 41 can be seated at a predetermined position on the deck as described later. The cassette tape seated on the deck can be taken out through the inlet 42.

4 schematically shows the gear assembly and cassette holder 35 and other main components installed on the outside of the first side wall 33. The rack gear 36, the pinion gear 37, the double gear 38, and the first arm gear 39 are provided outside the first side wall 33. In the rack gear 36, the first rack 53 and the second rack 54 are formed on different sides. The first rack 53 meshes with the pinion gear 37 to transmit the driving force, while the second rack 54 receives the driving force from the loading motor installed on the deck, so that the other gear train on the deck (not shown). No).

The pinion gear 37 is disposed between the rack gear 36 and the double gear 38. The double gear 38 is formed with the upper gear and the lower gear having different radii on the same axis, the pinion gear 37 meshes with the upper gear, and the first arm gear 39 meshes with the lower gear. The dual gear is a feature of the present invention and will be described in more detail later. The first arm gear 39 has an arm 51, and a spring 56 is provided on the arm 51. The first arm gear 39 is provided outside the first side wall 33, while the arm 51 has a shape of the first side wall 33 so as to extend from the inside of the first side wall 33. It is provided. The first arm gear 39 is again engaged with the first shaft gear 40, and a shaft S is installed at the center of the shaft 40, which is connected to the shaft gear of the second side wall.

The cassette holder 35 is disposed between the first side wall 33 and the second side wall 34. Inside the first side wall 33, guides 45 and 46 which guide the movement of the cassette holder 35 are formed. The locking lever 48 is rotatably coupled to the cassette holder 35 via the lever hinge 50. When no external force is applied, the locking lever 49 maintains the state shown in FIG. 4 by the elastic force of the spring 55 whose one end is fixed to the cassette holder 35. At this time, since the hook portion of the locking lever 49 is caught by the groove 43 shown in FIG. 3, the cassette holder 35 is prevented from moving. The locking lever 49 is provided with a protrusion 58 protruding into the inner space of the cassette holder 35. When the cassette tape 41 pushes the protrusion 58, the hook of the locking lever 49 is grooved. By disengaging from 43), the cassette holder can be moved.

Two bosses 47 and 48 protrude from the side of the cassette holder 35. The bosses 47 and 48 move the cassette holder 35 along the guides 45 and 46 formed inside the first side wall 43. Since the boss 47 is inserted between the arms 51, the driving force is transmitted to the first arm gear 39 so that the first arm gear 39 rotates in the clockwise or counterclockwise direction of the cassette holder 35. It is possible to move.

5 shows the gear assembly of FIG. 4 in an exploded perspective view. Dual gear 38, which may be a feature of the present invention, includes an upper gear 62, a lower gear 61, and a spring 67. The upper gear 62 is formed with a plurality of coupling grooves 66 and the upper clasp 65 integrally, the through hole 68 is formed in the center. The lower gear 61 has a hook-shaped engaging protrusion 64 that can be coupled to the engaging groove 66 of the upper gear 62, a shaft 69 to be inserted into the through hole 68, and a lower clasp 63. ) Is formed. The spring 67 is fitted to the shaft 69 to exert an elastic force between the upper clasp 65 and the lower clasp 63.

When no external force is applied, the relative position of the engaging groove 66 of the upper gear 62 and the engaging projection 64 of the lower gear 61 is shown in FIG. 6 (a). That is, the upper gear 62 is deflected counterclockwise by the elastic force of the spring 67, and the lower gear 61 is deflected clockwise.

The external force on the double gear 38 is applied to the upper gear 62 via the arm gear 39 according to its starting point, and the lower gear 61 via the rack gear 36 and the pinion gear 37. ) Can be divided into the following cases. The external force applied to the arm gear 39 corresponds to a case where the user manually applies a force when the cassette tape is inserted, and the arm gear 39 rotates clockwise. As described above, when the user ends the manual process of pushing the cassette tape 41 into the cassette holder 35, the cassette holder 35 is driven by the driving force of the loading motor by activating a switch separately formed in the apparatus. ) Moves to an automated process of moving. However, in the manual process as described above, the loading motor is not driven because the switch is not in operation, and thus the rack gear is under a static load of the motor. Therefore, even if the arm gear 39 rotates in the clockwise direction, the lower gear 61 meshed thereto does not rotate the upper gear 62, and only the engaging projection 64 of the lower gear 61 is engaged with the engaging groove 66. Only idling against the spring's elastic force is achieved. This idle state is shown in FIG. 6 (b) and continues until the cassette tape 41 activates the automatic insertion switch in the apparatus.

Once the built-in switch is activated, it enters auto insert mode. The rack gear 53 is moved to the left side by the driving of the loading motor as seen in the drawing, so that power is transmitted to the upper gear 62 through the pinion gear 37. The upper gear 62 rotates counterclockwise, and the counterclockwise rotation of the upper gear 62 causes the inner surface of the coupling groove 66 to push the coupling protrusion 64 so that the lower gear 61 counterclockwise. Rotate Counterclockwise rotation of the lower gear 61 transmits clockwise rotational force to the arm gear 39. The arm gear 39 transmits power through the boss 47 of the cassette holder 35 sandwiched therebetween, thereby seating the cassette holder 35 on the deck along a predetermined path. Power transmission in this automatic insertion mode is instantaneous and the dual gear 38 does not delay power transmission.

As described above, the inserting action of the cassette tape in the apparatus of the present invention is a manual inserting mode in which the user pushes the cassette tape, a time delay and a buffering action just before the automatic inserting mode is started, and an automatic inserting mode. With the onset of the instantaneous transmission of the driving force takes place.

The action of taking out the cassette tape is started by the user operating an external switch, where the rack gear 36 is moved to the right by the driving of the loading motor. When the rack gear 36 moves to the right, counterclockwise rotation of the pinion gear 37 and clockwise rotation of the upper gear 62 and the lower gear 61 of the double gear 38 are made. When the upper gear 62 rotates clockwise, the elastic force of the spring 67 supported between the upper clasp 65 and the lower clasp 63 rotates the lower gear 61 clockwise without delay. Unlike the manual insertion of the cassette tape, when taking out, the load of the repelling force against the elastic force of the spring 67 is not applied to the movement of the entire gear system and the cassette holder 35, and thus from the upper gear 62 as above. Immediate power transfer is possible with the lower gear 61. The arm gear 39, which is then engaged with the lower gear, rotates counterclockwise, and the arm 51 moves the cassette holder 35 along a predetermined path to take out the cassette tape.

The cassette tape insertion and withdrawal device according to the present invention can prevent the improper force applied to the cassette holder, thereby preventing malfunction of the device. In addition, there is an advantage that can generate a constant buffering force that can respond to environmental changes such as addition of various types of external force, as well as simple and reliable compared to the prior art device.

Claims (4)

The front surface 32 on which the first side wall 33 and the second side wall 34, the cassette holder 35, and the inlet 42 through which the cassette tape 41 can be inserted or ejected into the cassette holder 35 are formed. A rack gear 36 having a first rack 53 and a second rack 54 formed on a side surface of the first side wall 33, and a pinion gear engaged with the first rack 53; 37), a cassette provided with a double gear 38 meshing with the pinion gear 37, a first arm gear 39 and a shaft gear 40 meshing with the dual gear 38 and integrally formed with the arm 51; In the tape insertion and take-out device, the double gear 38 includes a lower gear 61 formed with a plurality of engaging projections 64, a lower clasp 63, and a shaft 69 of the central portion, and the engaging projections ( An upper gear 62 integrally formed with a coupling groove 66 fitted into the 64, an upper clasp 65, and a through hole 68 fitted into the shaft 69, and a lower clasp of the lower gear 61 63) and Cassette insertion and take-out apparatus comprising a spring (67) for rotating the deflection of the lower gear 61 and upper gear 62 in the opposite direction between the groups upper latch portion 65 of the upper gear 62. A cassette insertion and ejection device according to claim 1, characterized in that the upper gear (62) is engaged with the pinion gear (37) and the lower gear (61) is engaged with the arm gear (39). 3. The cassette according to claim 2, wherein the elastic force of the spring 67 is greater than the sum of the moving load of the cassette holder 35 and the rotating load of the entire gears 36, 37, 38, 39, and 40. Insertion and ejection device. The elastic force of the spring (67) is characterized in that the moving load of the cassette holder (35), the rotational load of the entire gears (36, 37, 38, 39) and the motor for driving the cassette holder (35). A cassette insertion and withdrawal device, characterized in that less than the sum of the static loads.