JPS62246167A - Cassette loader - Google Patents

Abstract

PURPOSE:To move a cassette holder without bringing the front end part of a cassette cover and the corner part of a top case into contact with each other by providing a subholder with the second input member and providing a power transmission member with the second guide groove which guides slide of the subholder in only a required section. CONSTITUTION:When a main holder 2 is placed in the second position and a subholder 3 is placed in the fourth position, a required space is provided between the wall of a guide groove 7d and an input pin 3b. When the main holder 2 rises up to such height that a top case 11 and a cassette cover 4 do not interfere with each other after the start of rise of the main holder 2, the subholder 3 starts to move. Rotation of a subarm 7 is completed when a pin 6b is brought into contact with the end part of a long hole part 2b of the main holder 2; and when rotation of the subarm 7 is stopped, turning of a main arm 6 is stopped, and therefore, turning of a transmission member 7c is stopped to complete movement of the subholder 3. When the subholder 3 is moved from the fourth position to the third position, a part 1a of the tape cassette is exposed from the cassette cover 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device used in magnetic recording and reproducing devices such as household video tape recorders.

2. Description of the Related Art An example of the above-mentioned conventional cassette loading device will be described below with reference to the drawings. FIG. 6 is a side view of the conventional cassette mounting device when the cassette holder is in the second position, and FIG. 7 is a side view of the conventional cassette mounting device when the cassette holder is in the first position. In FIG. 6, 101 is a tape cassette, and 102 is a main holder that holds the tape cassette 101. A sub-holder 103 is a member to which the tape cover 104 is attached, and slides on the main holder 102 in the direction of the arrow in the direction of the cassettes t and r1. The 102aij guide pin is installed in the main holder 102, and the sub holder 10
3, and guides the sliding movement of the sub-holder 103.

106 is a sub-arm, which is rotatable around RQllo e a. 106b is sub arm 10
The pin 6 is fitted into the elongated portion 102b provided on the main holder 102 so that the main holder 102 can be slid.

A main arm 107 is rotatably supported around a shaft 107a. 107b is main arm 107
The pin installed in the stand 108 is fitted with a long portion 108a provided on the stand 108 so that the stand 108 can be slid. 1070
is a transmission member, which is formed integrally with the main arm 107.

107d is a guide groove provided in the transmission member 107c, and is fitted with an input pin 103b set on the sub-holder 103. 109 is an intersection +1iIII of the main arm 107 and the sub-arm 106, which rotatably supports the main arm 107 and the sub-arm 106. Main holder 1 with main arm 107 and sub arm 106
It constitutes the lifting mechanism of 02. 110ij: front case; 111: top case. A holder spring 112 is a tension spring applied between the stand 1o8 and the main arm 107. Reference numeral 114 denotes a biasing member that eliminates looseness of the sub-holder 103 in the direction of arrow B.

The operation of the conventional cassette loading device configured as described above will be described below. In FIG. 6, the cassette holder is in the second position and the sub-holder 103 is in the fourth position. A case in which the cassette boulder moves from the second position to the first position will be explained. Due to the tensile force of the holder spring 112, the pin 107b slides in the direction of arrow B along the long hole portion 108. Accordingly, the intersection l
Main arm 107Vi centered on 1llI11o9
Rotate clockwise. Further, the intersection point 11111109 rotates counterclockwise around the axis 106a. Sub arm 1
06 rotates in the same way as the intersection axis 109, so the pin 106
b slides in the direction of arrow B along the elongated hole portion 102b.

These operations cause the main holder 1o21d to rise.

As the main holder 102 starts to rise, the transmission member 107C, which is integrally formed with the main arm 107, starts to rotate clockwise around 1IQI+1oR, and moves toward the wall of the guide groove 107d. After the pin 103b comes into contact with the rear sub-holder 103, the rear sub-holder 103 is moved in the direction indicated by the arrow. Here, when the main holder 102 is in the second position and the sub holder 103 is in the fourth position, a necessary gap is provided between the wall of the guide groove 107d and the input pin 103b, and the main holder 102 is in the second position. After the holder 102 starts to rise, the top case 111 and the cassette cover 104
The sub holder 103 is configured to start moving after the main holder 102 has risen to a height where it does not interfere with the main holder 102.

Next, in Figure 7, the cassette holder is in the first position;
Sub-holder 103 is in the third position.

As shown in FIG. 7, when the rotation of the sub-arm 107 is completed, the pin 106b is attached to the long portion 102 of the main holder 102.
This is when it comes into contact with the end of b. When the sub-arm 107 stops rotating, the main arm 108 also stops rotating.
The transmission member 107C stops rotating, and the sub holder 103
movement is completed. As the sub holder 103 moves from the fourth position to the third position, the tape cover i0
4, a part 101a of the tape cassette is exposed.

Therefore, the user can insert the tape cassette into the main holder 102 or take it out from the main holder 102 by grasping the exposed portion 101a.

Also, a case will be described in which the cassette holder is moved from the first position to the second position. When external force FA is applied to the cassette cover 104 in the direction of arrow C in FIG.
The sub-holder 103 moves in the direction of the arrow by the component force FB in the direction of the arrow.

Further, component force FC of external force FA in the direction of arrow E is applied to main arm 106 and sub-arm 107, respectively, and pin 1
07b moves in the direction of arrow F along the elongated hole 1081L, and the pin 106b moves in the direction of the arrow along the elongated hole 102b, so that the cassette holder descends.

Therefore, since the input pin 103b slides on the wall of the guide groove 10d in the direction of the arrow, the pin 102ia
After the sub-holder 103 reaches the fourth position where the cassette holder and the end of the elongated hole 103a come into contact with each other and completes its movement, the lowering of the cassette holder is completed. Therefore, the cassette cover 104 completes its movement in the arrow direction to a position where it does not interfere with the top case 111, and then completes its descent.

Problems to be Solved by the Invention However, in the above configuration, when an external force FD is applied to the cassette cover 104 in the direction of the arrow G as shown in FIG. Receive FE. On the other hand, the main arm 106 and the sub-arm 107 are each subjected to a component force F in the direction of the arrow E of the external force F.
, is added, and the pin 107b is the elongated hole part 108! The cassette holder moves in the direction of the arrow F along the line L, and the pin 106b moves in the direction of the arrow F along the elongated hole 102b, so that the cassette holder descends. At this time, the transmission member 1070 rotates counterclockwise, so the input pin 103 fitted in the guide groove 107d
A force is applied in the direction D, and the sub-holder 103 moves in the direction indicated by the arrow.

In order to prevent the transmission member 107C from applying force to the sub-holder 103 when the cassette holder is lowered further than the second position, and when the cassette holder is raised, the sub-holder 1 is
03 starts moving, and when the cassette holder is lowered, the sub-holder 103 is in the fourth position and the main holder 102 is in the second position, so that the movement of the sub-holder 103 is completed earlier than when the lowering is completed. In some cases, a gap is provided between the input pin 103b and the wall of the guide groove 107d, and the shape of the guide groove 107d is as shown in FIG.

By providing this gap, the sub-holder 103 moves only to the point where the input pin 103b comes into contact with the wall of the guide groove 107d in the direction of the arrow manual force, so the sub-holder 103 does not correctly complete its movement to the fourth position. The cassette holder will continue to descend, and the cassette cover 10
4 and the top case 111 come into contact with each other, making it impossible to complete the lowering of the cassette holder.

In addition, in order to solve the above problem, the cassette cover 1
If the gap between the tip 104a of the top case 111 and the corner part 111a of the top case 111 is widened, there is a problem in that dust and other particles may enter the gap and further enter the magnetic recording/reproducing device.

In view of the above-mentioned problems, the present invention has been developed to provide a top case 104a of the cassette cover 104 and a corner part 111 of the top case 111.
To provide a cassette mounting device in which a cassette holder can be completely moved to a second position without abutting a tip part 104a of a cassette cover 104 and a corner part 111a of a top case 111 even if the gap a is small. It is something.

Means for Solving the Problems In order to solve the above problems, the cassette mounting device of the present invention includes a main holder of a tape cassette holding member having a sliding guide means, and a main holder for the tape cassette holding member having a sliding guide means. a tape cassette holding member; a sub-holder of an exterior attachment member that is slidable on the main holder; The cassette holder is held in the first position, the cassette holder is held in the second position for holding the tape cassette in a recording/playback position in the recording/playback device, and the cassette holder is held in the first position.
The main cassette mounting device has an elevating mechanism that reciprocates between a position of Between the third position on the holder and the fourth position on the main holder where the sub-holder has completed sliding toward the tape cassette insertion slot, when the cassette holder is in the first position, the sub-holder is in the third position. the sub-holder is in the fourth position, and the sub-holder is in the fourth position when the cassette holder is in the second position, and the sub-holder is in the fourth position. The cassette mounting device is configured such that the start of movement is delayed by a necessary time after the cassette holder starts moving from the second position to the first position, and the sub-holder is configured to start moving from the second position to the first position. When moving from the first position to the fourth position, the cassette holder is configured to complete movement of the sub-holder by a necessary time earlier than when the cassette holder completes movement from the first position to the second position. It is something.

According to the above-described structure, when the cassette holder moves from the first position to the second position, the sub-holder completes the movement of the cassette holder from the third position to the fourth position. This means that the cassette holder can be moved from the first position to the second position without the tip of the cassette cover and a part of the corner of the top case coming into contact with each other.

EXAMPLE Hereinafter, a cassette loading device according to an example of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the cassette holder of the cassette mounting device in the embodiment of the present invention in a second position. Figure 2 is a side view of the cassette holder in the first position, Figure 3 is an enlarged side view of the cassette holder in the second position, and Figure 4 is a side view of the cassette holder in the second position. This is an enlarged view of a state in which the sub-holder is as close to the tape cassette insertion slot as possible in the slightly raised position of the second position area, and FIG. It is an enlarged view of a state in which it is as close as possible.

In FIG. 1, 1 is a tape cassette, and 2 is a main holder that holds the tape cassette 1. Reference numeral 3 denotes a sub-holder, which is a member to which the tape cover 4 is attached, and slides on the main holder 2 in the direction of arrow a, which is the cassette insertion direction. 2
A is a guide pin, which is installed in the main holder 2 and is fitted into an elongated hole 3a provided in the sub-holder 3 to guide the sliding movement of the sub-holder 3. 6 is a sub-arm, which is rotatable around IIQll 8a. Reference numeral 6b denotes a pin installed in the sub-arm 6, which is fitted into an elongated hole 2b provided in the main holder 2 so as to be slidable therein.

7 is a main arm, which is rotatably supported around a shaft 71L. 7bij A pin installed in the main arm 7 is fitted into an elongated hole 8a provided in the stand 8 so that it can slide. A transmission member 70 is formed integrally with the main arm 7. A first guide groove d is provided in the transmission member 7c, and is fitted with a first input pin 3b set on the sub-holder 3. Reference numeral 76 denotes a second guide groove provided in the transmission member 7c, and is fitted with a second input pin 3c installed in the sub-holder 3.

Reference numeral 9 denotes an intersection axis between the main arm 7 and the sub-arm 6, which rotatably supports the main arm 7 and the sub-arm 6.

The main arm 7 and the sub-arm 6 constitute an elevating mechanism for the main holder 2. 10ij front case, 1
1 is the top case. Reference numeral 12 denotes a holder spring, which is a tension spring placed between the stand 8 and the main arm 7.

Reference numeral 14 denotes a biasing member that eliminates play in the sub-holder 3 in the directions of arrows &b.

The operation of the cassette loading device configured as described above will be described below.

First, in FIG. 1, the cassette holder is in the second position and the sub-holder 3 is in the fourth position.

A case in which the holder moves from the second position to the first position will be described. The tensile force of the holder spring 12 causes the pin 7b to slide along the elongated hole 8a in the direction of the arrow. Accordingly, the main arm 7 rotates clockwise around the intersection 11Ql19.

Further, the intersection point 1M+9 rotates counterclockwise around the axis 6a. Since the sub-arm 6 rotates in the same manner as the intersection axis 9, the pin 6b slides along the long portion 2b in the direction indicated by the arrow. These operations cause the main holder 2 to rise. As the main holder 2 starts to rise, the transmission member 7c, which is formed integrally with the main arm 7, starts to rotate clockwise around the shaft 7a, and the pin is attached to the wall of the guide completion d. 3b is dug out, the rear sub-holder 3 is moved in the direction of arrow a. Here, when the main holder 2 is in the second position and the sub-holder 3 is in the fourth position, a necessary gap is provided between the wall of the guide groove 7d and the input pin 3b, After the main holder 2 starts to rise to a height where the rear top case 11 and the cassette cover 4 do not interfere with each other, the sub holder 3
is configured to start moving.

Next, in Figure 2, the cassette holder is in the first position;
The sub-holder 3 is in the third position. As shown in FIG. 2, the rotation of the sub-arm 7 is completed when the pin 6b comes into contact with the end of the long portion 2b of the main holder 2. When the rotation of the sub-arm 7 stops, the rotation of the main arm 6 also stops, so the rotation of the transmission member 7C stops, and the movement of the sub-holder 3 is completed. As the sub-holder 3 moves from the fourth position to the third position, a portion 1a of the tape cassette is exposed from the tape cover 4. Therefore, the user can insert the tape cassette into the main holder 2 or take it out from the main holder 2 by grasping the exposed portion 1a.

Also, a case will be described in which the cassette holder is moved from the first position to the second position. When an external force fa is applied to the cassette cover 4 in the direction of the arrow C in FIG. 2, the sub-holder 3 is moved in the direction of the arrow d by a component force fb of the external force flL in the direction of the arrow d. In addition, component force f0 of external force f4 in the direction of arrow e is applied to main arm 6 and sub-arm 7, respectively9.
The pin 7b moves in the direction of arrow f along the elongated portion 8, and the pin 6b moves in the direction of arrow a along the elongated hole portion 2b, so that the cassette holder descends. Therefore, as shown in FIG. 4, the first input pin 3b slides on the wall of the first guide groove 7d in the direction of the arrow d, so that the pin 2a and the elongated hole 3!
When the sub-holder 3 reaches the fourth position where it comes into contact with the end of the L, the movement is completed, and the lowering of the cassette holder is completed. Therefore, the cassette cover 4 completes its movement in the direction of arrow d to a position where it does not interfere with the top case 11, and then completes its descent.

Next, when an external force fd is applied to the cassette cover 4 in the direction of arrow C in FIG. 5, a component force f of the external force fd in the direction of arrow a. subholder 3 receives. Main arm 6 and sub arm 7
A component force f0 in the direction of the arrow e of the external force fd is applied to each of the cassettes, and the cassette holder descends as described above. Further, as the main arm 6 rotates counterclockwise, the transmission member 7C also rotates counterclockwise. therefore,
At the location where the first input pin 3b comes into contact with the wall on the side in the direction of the arrow a at the end of the first guide d, the sub-holder 3 moves in the direction of the arrow d due to the rotation of the transmission member. However, in order to cause the sub-holder 3 to start moving from the fourth position to the third position after a necessary time delay after the cassette holder starts moving from the second position to the first position, In order to ensure that the sub-holder 3 remains in the fourth position even if the cassette holder is further lowered than the second position, the first guide groove 7d is provided with a groove 7! The width of the groove on the L side is increased to create a gap between the first input pin 3b and the wall of the first guide groove 7d when the cassette holder is in the @2 position and the sub holder 3 is in the fourth position. This is provided. Therefore, when the cassette holder is in the vicinity of the second position where the groove width of the first guide groove 7d becomes large, the second input pin 3c and the second guide groove 7e come into contact with each other, and the force due to the rotation of the transmission member 7c is transmitted. This is transmitted to the sub-holder 3 via the second input pin 3c to move the sub-holder 3 in the direction of arrow d. As a result, the sub-holder 3 correctly completes its movement to the fourth position, and thereafter the cassette holder completes its descent as necessary.

Therefore, the cassette cover 4 completes its movement in the direction of arrow 16 to a position where it does not interfere with the top case 11, and then completes its descent.

As described above, according to this embodiment, by providing the second input pin 3G and the second guide groove 7e, the time when the cassette holder completes movement from the first position to the second position can be adjusted. Since the sub holder 3 completes its movement from the third position to the fourth position as quickly as necessary, the tip 42L of the cassette cover 4 and the corner part 1 of the top case 11
The cassette holder can be moved from the first position to the second position without contacting the cassette holder 1a.

Effects of the Invention As described above, the present invention provides a second input member in the sub-holder, and when the sub-holder slides from the third position to the fourth position, the input member is moved from the third position to the fourth position by a necessary distance. By providing the power transmission member with a second guide groove that guides the sliding movement of the sub-holder in the direction of position 4, when the cassette holder moves from the first position to the second position, the cassette holder moves from the first position to the second position. Since the sub-holder completes the movement from the third position to the fourth position by the necessary time earlier than the time when it completes the movement from the third position to the second position, the tip of the cassette cover and the top case are It is possible to provide a cassette mounting device in which the cassette holder can move from the first position to the second position without some corners coming into contact with each other.

[Brief explanation of drawings]

FIG. 1 is a side view of the cassette holder of the cassette mounting device in the embodiment of the present invention in the second position;
The figure shows a side view of the cassette holder in the first position, Figure 3 is an enlarged view of Figure 1, and Figures 4 and 5 show the cassette holder slightly in the direction of the first position than in the second position. FIG. 6 is a side view of the conventional cassette loading device with the cassette holder in the second position, and FIG. 7 is a side view with the cassette holder in the first position. , and FIG. 8 is an enlarged side view of the cassette holder moved slightly toward the first position from the second position. 1...Tape cassette, 2...Main holder, 2a...Guide pin, 3...
・Sub holder, 3a...Elongated hole, 3b...
...First input pin, 3C...Second input pin, 4...Cassette cover, e...Main arm, 6a/7a...・Rotation axis, 6b-7
b...Pin, 7...Sub arm, 7c
...Transmission member, 7d...First guide groove, 7e...Second guide groove, 8...Stand, 8a...・Elongated hole, 9...Intersection axis, 1o...Front case, 11...
Top case, 12... Holder spring, 14.
...Biasing member. w&2 Figure 3 Figure 4 Figure 5 Figure 5 wIh7 Figure 8 Procedural amendment June 1988 178 Patent application No. 90466 of 1988 2 Name of the invention Cassette loading device 3 Person making the amendment A'1 Relationship with 'I'-X°
Application Address 1006 Oaza Kadoma, Kadoma City, Osaka Name (582) Matsushita Electric Industrial Co., Ltd. Representative Akio Tanii 4 Agent Address 571 Address Matsushita Electric Industrial Co., Ltd. 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture 6. Contents of the amendment (1) "Tape cover" on page 4, line 16, page 8, line 4, page 14, line 15, and page 17, line 18 of the specification is amended to be "cassette cover." Masu 4, (2) Same page 7, No. 17
Correct r 107 J on page 7, line 20, page 8, line 15, and page 9, line 14 to "1o6". (3) Page 8, line 7, page 8, line 16, page 9, line 14
Correct "1o6" in the line to "1o7" 0 (4) Correct "shaft a" in line 6 of page 15 to "shaft a installed in main holder 2". (5) Page 17, line 12, page 17, line 14. "Ryo" on page 18, line 8 and page 19, line 4 will be corrected to "6". (6) "6" on page 17, line 16, page 18, line 8, page 19, line 4, and page 19, line 6 will be corrected to "A". ) Change the “component force f.” on page 19, line 5 of the same page to [component force ff J
I will correct it. (8) Change “Arrow 16” to “Arrow D” on page 20, line 12.
I will correct it. (9) “6...” on page 22, lines 14 to 16.
...Main arm" is corrected by "6...Sub arm". <10) Correct "7...sub arm" in line 16 of page 22 of PI to "7...main arm". (11) Figures 1, 2, 6, and 7 of the drawings will be corrected as shown in the attached sheet. / ---Chi 7" cassette 7 medium main arm tb, 7b'-h'7 /4-1-i size %' Sound IIS Zaihama 1 figure 2 tot-1-tape goose lθ7-main arm 10Z- Main holder 10'/c-・Arresting member lθ2tt, - Force side pin lθ7d~・
-Guide groove tosb-, v, i vinyl/toq
・-';Z, point, axis lθ4-p set cover 1
10・-Front booth 106---Bubu arm
m-hzz goose 10/m, 107a, ---D
Rotating axis //Seal main Lugba half 106b, /θ7b・-
Bottle 114- = energizing valve material Fig. 6 Fig. 7

Claims (3)

[Claims] (1) A cassette composed of a main holder of a tape cassette holding member having a sliding guide means, and a sub-holder of an exterior mounting member that can slide on the tape cassette holding member while being guided by the sliding guide means. A holder is provided, the cassette holder is held in a first position where the tape cassette can be placed in or taken out from the main holder, and the tape cassette is held in a position in the recording/playback device where recording/playback is possible. The cassette mounting device holds the cassette holder at a second position for holding the cassette holder, and further has an elevating mechanism for reciprocating the cassette holder between the first position and the second position, In conjunction with the operation of the lifting mechanism,
The cassette is inserted between the third position on the main holder where the sub holder has completed sliding in the tape cassette insertion direction and the fourth position on the main holder where the sub holder has completed sliding towards the tape cassette insertion slot. The sub-holder is provided with means for reciprocating the sub-holder so that when the holder is in the first position, the sub-holder is in a third position, and when the cassette holder is in the second position, the sub-holder is in a fourth position. , a cassette configured such that the timing at which the sub-holder starts moving from the fourth position to the third position is delayed by a necessary time after the cassette holder starts moving from the second position to the first position. The loading device also includes a mounting device, and when the sub-holder moves from the third position to the fourth position, the sub-holder moves the sub-holder a necessary amount of time earlier than when the cassette holder completes moving from the first position to the second position. A cassette loading device characterized by being configured such that movement of the holder is completed. (2) The sub-holder is provided with a sliding guide groove and a first input member for interlocking the sliding movement of the sub-holder and the vertical movement of the cassette holder, and a first input member that engages with the first input member is provided. A power transmission member between the sliding motion and the lifting motion has a guide groove, and when the sub-holder completes sliding from the third position to the fourth position, the end of the sliding guide groove of the sub-holder is provided. When the sliding guide member provided on the main holder that engages with the sliding guide groove of the sub-holder is in contact with the first input member of the sub-holder and the first guide groove of the power transmission member, The cassette mounting device is configured to have a clearance between the cassette mounting device and the wall, and the sub-holder is provided with a second input member, which is necessary when the sub-holder slides from the third position to the fourth position. The cassette mounting according to claim 1, characterized in that the power transmission member is provided with a second guide groove that guides the sliding movement of the sub-holder from the third position to the fourth position only in a section where Device. (3) Claim 1, characterized in that a biasing member is provided for applying a biasing force to the sub-holder toward the tape cassette insertion slot at least when the sub-holder is in the fourth position. Or the cassette mounting device according to item 2.