JPH03248362A - Tape loading mechanism - Google Patents

Abstract

PURPOSE:To omit a tape guide driving mechanism and to reduce the number of parts by providing a tape guide on the side of a pinch roller integrally with a pinch arm. CONSTITUTION:The pinch arm 8 is fitted its other end to a shaft 8B, and is turnable forward and backward around the shaft 8B. Then, a freely turnable end of this arm 8 is fixed integrally with the tape guide 12 lined up with the pinch roller 9. The guide 12 in a backward unloading position is entered into a cassette mouth, and in a forward tape loading position this is brought into contact with the inside of a tape to guide the tape. Consequently, the tape loading and unloading can be carried out by the guide 12 together with the pinch roller 9 in accordance with an operation of the arm 8. By this method, the need of a driving mechanism exclusively for the tape guide is eliminated, and the number of parts is reduced.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a magnetic recording and reproducing device that records and reproduces data by winding a tape around a rotating drum. The present invention relates to a tape loading mechanism for winding around a drum, and particularly relates to a tape loading mechanism with a simplified drive configuration for a tape guide.

[Prior Art] A tape loading mechanism uses a tape loading member that contacts the tape from inside the tape, and advances the tape loading member from an unloading position in a cassette mouth to a tape loading position in front of the tape. Pull it out and wrap it around the drum.
This is a mechanism that performs so-called tape loading.

In such a tape loading mechanism, in order to load the tape as described above, a pinch roller is used to press the tape onto the capstan shaft, and a tape guide is used to guide the end of the tape wound around the drum. Similarly to the tape loading member, it is necessary to advance the tape loading member from the unloading position in the cassette/sotomouse to the tape loading position in front.

Among the three types of operating members described above, namely the tape loading member and the pinch roller, the tape loading member and the tape guide only need to be fixed at their respective predetermined tape loading positions. In this case, it is possible to simplify the configuration by using a common driving means.

For example, when driving the tape loading member,
The tape loading member is moved in at least one direction in the front and rear directions by a tape loading drive member that is rotatable or movable in the front and back direction, and when only one side is driven, the remaining one is biased by an elastic member, etc. The structure is taken.

In this case, when driving the tape guide, the tape guide is provided at the rotatable free end of a tape guide support member that is rotatable in the front-rear direction, and the tape guide support member is biased in the tape loading direction by an elastic member and unloaded. During loading, the tape guide support S material is pushed back to the unloading position in conjunction with the movement of the tape loading member or the tape loading drive member against the biasing force of the elastic member.

On the other hand, the pinch roller does not take a single tape loading position, but moves between the crimping position in low speed modes such as play mode and the release position slightly behind the crimping position in pose mode and fast winding mode. Therefore, it is difficult to use the tape loading drive member directly as a drive means, and a dedicated drive mechanism is provided.

That is, the pinch roller is generally supported at the free rotation end of a pinch arm that is movable and rotatable in the front-back direction, and by moving the pinch arm back and forth by a loading operation member, loading/unloading is performed. By regulating the rotational position of the pinch arm which is driven and is located at the loading position, the pinch arm is fixed at the crimping position and the release position, respectively.

As mentioned above, in conventional tape loading mechanisms, it is possible to use the same drive mechanism to some extent for driving the tape loading member and tape guide, but a unique drive mechanism is required for driving the pinch roller. As a result, the number of parts increases, the configuration becomes more complex,
Additionally, this has the disadvantage of increasing the size of the entire mechanism.

By the way, among the tape guides provided at the end of the tape being pulled out, the tape guide on the same side as the pinch roller is located near the pinch roller, and its moving path and range are close to that of the pinch roller, so the pinch roller cannot be driven easily. It is conceivable that the powerful driving force of the mechanism could be used to drive the pinch roller together with the pinch roller, but in such a configuration, the pinch arm would move according to the movement between the crimping position and the release position.
Since the tape guide would also move and cause damage to the tape, such a configuration could not be adopted in the end, and the configuration could not be made smaller or simpler.

In addition, when driving the tape guide, the driving force especially up to the unloading position is obtained from an elastic member, so when loading the tape and running the tape,
Since the tape guide will receive a force in the direction of being pushed back by the tape, it is necessary to increase the biasing force of the elastic member that biases the tape guide to overcome this force. The driving force for pushing back must also be large. That is, as mentioned above, since the tape guide support member is pushed back to the unloading position by the driving force of the tape loading drive member in the unloading direction, It becomes necessary to increase the driving force, and as a result, the drive configuration becomes large and complicated.

Furthermore, if the tape guide is fixed at the tape loading position by the biasing force of the elastic member, if the biasing force of the elastic member is weak, the tape guide will move due to vibration, making it impossible to run the tape stably. This has been a fatal drawback, especially in equipment that requires vibration resistance, such as in-vehicle equipment.

[Problems to be Solved by the Invention] The present invention has been proposed in order to solve the problems of the prior art as described above, and its purpose is to contribute to the miniaturization and simplification of the structure, and to provide vibration resistance. The purpose of the present invention is to provide an excellent tape loading mechanism with high performance.

More specifically, one objective is to eliminate the tape guide drive mechanism by driving the tape guide on the pinch roller side using the strong driving force of the pinch roller drive mechanism and fixing it at the tape loading position. The aim is to reduce the number of parts to make the structure smaller and simpler, and to improve vibration resistance. Another method is to use the strong driving force of the tape loading member instead of using a dedicated elastic member to fix the tape guide at the tape loading position, thereby reducing the driving force in the unloading direction. The aim is to reduce the size and simplification of the drive configuration, and to improve vibration resistance.

[Means for Solving the Problems] With the above purpose in mind, the inventor has developed an integrated tape guide on the pinch arm, in contrast to the conventional wisdom that moving the tape guide would damage the tape. The inventors have discovered that even if the tape guide moves with this movement, there is a range of movement within which the tape will not be damaged. The invention of claim 1 is a configuration proposed based on such facts.

That is, the tape loading mechanism according to claim 1 is provided so as to be movable and rotatable in the front-rear direction, to move between a front tape loading position and a rear unloading position, and to be able to move between a front tape loading position and a rear unloading position. A pinch arm that rotates between a crimping position at the front and a release position slightly rearward from the crimping position; A pinch arm is provided at the free rotation end of the pinch arm, and the pinch arm rotates between a crimping position at the front and a release position slightly rearward from the crimping position; a pinch roller that moves between a crimping position, a release position slightly behind the crimping position, and an unloading position in the rear cassette mouse;
It is provided on the pinch arm, in line with the pinch roller,
Depending on the moving and rotational positions of the pinch arm, the pinch arm moves between the first and second tape loading positions in the front and the unloading position in the cassette mouse in the rear. The present invention is characterized in that it includes a tape guide that comes into contact with the tape from the inner extension 1 of the tape at the tape loading position and guides the tape.

Further, in the invention of claim 2, the biasing direction of the tape guide support member by the elastic member is set to the unloading side, contrary to the conventional one, and when loading the tape, the tape loading driving member resists the biasing force of the elastic member. The tape guide support member is moved in the tape loading direction and fixed at the tape loading position.

That is, the tape loading mechanism according to claim 2 is provided so as to be movable back and forth, moves between a front tape loading position and a rear unloading position, and contacts the tape from the inside of the tape when moving forward. a tape loading member that pulls out; a tape guide support member that is rotatable in the front-rear direction and moves between a front tape loading position and a rear unloading position; a rotatable free end of the tape guide support member; The tape guide support member moves between a front tape loading position and a rear unloading position according to the rotation of the tape guide support member, and at the front tape loading position it contacts the tape from the inside of the tape and guides the tape. An elastic member that constantly biases the tape guide support member in the rear unloading direction; An elastic member that is rotatable or movable in the front-rear direction and that biases the tape loading member at least back and forth depending on the direction of rotation or movement. The present invention is characterized in that it is provided with a tape loading drive member that is driven in either one of the directions and that engages with the tape guide support member and rotates the tape guide support member forward when rotating or moving forward.

[Function] The function of the present invention having the above configuration is as follows.

First, in the invention described in claim 1, the tape guide is integrally provided on the pinch arm that supports the pinch roller, so that the tape loading and unloading of the tape guide together with the pinch roller can be performed according to the operation of the pinch arm. This eliminates the need for a dedicated drive mechanism for the tape guide and reduces the number of parts.

In addition, since the position of the pinch arm in the crimping position or release position is strongly and reliably controlled by using a strong elastic member or cam, etc., the tape guide provided integrally with the pinch arm is 1. Fixing to the second tape loading position is also performed strongly and reliably, resulting in excellent vibration resistance.

Next, in the invention according to claim 2, the tape guide support member is biased to the unloading position by the elastic member, so that the biasing force of the elastic member applied to the tape guide support member and the tape loading and tape Since the force applied by the tape during running is in the same direction, the biasing force of the elastic member biasing the tape guide support member can be weakened.

In addition, since the tape guide support member is biased in the unloading direction by the elastic member,
Although this biasing force may assist the operation in the unloading direction, it does not hinder the operation in the unloading direction, so there is no need to increase the driving force of the tape loading drive member in the direction of unropping ink.
The driving force in the same direction can be reduced.

On the other hand, since the tape loading drive member is originally configured to provide a strong driving force during tape loading, the tape guide support member is moved to the tape loading position by the driving force of this strong tape loading drive member. In the present invention, which is configured to be fixed at the same position, even if the tape guide receives force in the unloading direction from the elastic member and the tape during tape loading and tape running, this force is relatively small. It is so small that it can be ignored, and the tape guide can be strongly and reliably fixed at the predetermined tape loading position.
Excellent vibration resistance.

[Embodiment] An embodiment of the tape loading mechanism according to the present invention will be specifically described below with reference to the drawings.

1 to 4 are plan views showing essential parts of the tape loading mechanism, and FIG. 5 is a plan view showing a cam member that drives the tape loading mechanism.

*Configuration of the embodiment* ■Tape loading mechanism...Fig. 1 to Fig. 4 Fig. 1
In the figures to FIG. 4, IA and IB are tape loading members, 2A and 2B are guide grooves, 3 is a rotating drum, and 4A is a tape loading member.
, 4B is a tape loading drive member, 5A, 5B are elastic members that urge the tape loading drive members 4A, 4B in the tape loading direction, 6 is a cam member, 8 is a pinch arm, 9 is a pinch roller, 10 is a pinch arm 8 11 is a capstan shaft.

That is, guide grooves 2 extending in the front-rear direction are provided on both left and right sides of a rotating drum 3 provided in front of a chassis (not shown).
A and 2B are provided, and tape loading members IA and IB are inserted into the left and right guide grooves 2A and 2B, respectively. These left and right tape loading members IA, IB
The tape moves along the guide grooves 2A and 2B between the front tape loading position (Figs. 2 to 4) and the rear unloading position (Fig. 1). This is a member that is inserted into the cassette mouse, contacts the tape 100 from inside the tape 100 when moving forward, and operates to pull out the tape 100. I in the diagram
Aa and IBa are provided on the tape loading members IA and IB in order to contact and pull out the tape 100 in this way, and IAb and IBb are provided adjacent to the guide rollers IAa and IBa. A tilting post for tilting the tape 100 with respect to the rotating drum 3, lA
c and lBc are tape loading drive members 4, which will be described later.
This is the engagement pin for A and 4B.

Note that the guide rollers IAa and IBa are supported by guide roller support portions provided below and fixed to the tape loading members IA and IB. Since this guide roller support portion is coaxial and has the same diameter as the guide rollers IAa and IBa, it corresponds to a circle indicating the guide rollers IAa and IBa in FIGS. 1 to 4. On the other hand, a position regulating member 2C is provided at the front end of the guide grooves 2A and 2B.
.

2D is provided. This position regulating member 2C.

2D is the tape loading member IA in the advanced state.

This is a member that regulates the position of the tape loading members IA and IB at the tape loading position by being pressed against the guide roller support portion of the IB.

The left and right tape loading members IA, IB are engaged with the left and right tape loading drive members 4A, 4B.

It is designed to be driven according to the rotation of 4B in the front-back direction. That is, the tape loading drive member 4A,
4B is provided so as to be rotatable in the front-rear direction by shafts 4Aa and 4Ba, respectively, and has engagement grooves 4Ab and 4Bb at their pivoting ends that engage with engagement pins lAc and IBc of tape loading members IA and IB. are provided, and cam followers 4Ac and 4Bc are provided in the central portion, respectively. These tape loading drive members 4A and 4B are
The elastic members 5A and 5B constantly bias the tape in the front tape loading direction, and at the same time, the grooved cams 6A and 6B of the cam member 6 drive the tape to the rear unloading position. Note that the cam member 6 will be described in detail later independently.

The pinch roller 9 is located at the front crimping position (Figs. 3 and 4).
), a release position (Fig. 2) slightly behind this crimping position, and an unloading position (Fig. 1) at the rear, and at the rear unloading position there is no crowding inside the cassette mouse. Tape loading member IA, IB
It is a member that moves forward together with the tape 100 and presses it onto the capstan shaft 11 with the tape 100 sandwiched therebetween at the front press position, and causes the tape to travel by rotation. This pinch roller 9 is attached to a support shaft 8A provided at one end of the pinch arm 8, and is configured to move back and forth as the pinch arm 8 rotates back and forth. That is, the pinch arm 8 is
By attaching the other end to the shaft 8B, this shaft 8
It is rotatable in the front-back direction around B, and a cam follower 8C is provided in the center. This pinch arm 8 is constantly urged in the forward crimping direction by the elastic member 10, and at the same time, the grooved cam 6C of the cam member 6
is driven to the rear unloading position. The biasing force of the elastic member 10 acts as a necessary pinch pressing force when the pinch roller 9 is pressed against the capstan shaft 11. Further, a first tape guide 12 is integrally fixed to the free rotation end of the pinch arm 8, in line with the pinch roller 9. This first tape guide 12 is a member that enters into the cassette mouse at the rear unloading position, contacts the tape 100 from inside the tape 100 at the front first and second tape loading positions, and guides the tape 100. This corresponds to the tape guide according to claim 1.

On the other hand, on the opposite side from the pinch arm 8, that is, on the left side of the chassis, a tape guide support member 13 is provided so as to be rotatable back and forth about a shaft 13a. A second tape guide 14 is integrally fixed to the rotatable free end of this tape guide support member 13.

This second tape guide 14, like the first tape guide 12 provided on the pinch arm 8, enters into the cassette mouth at the rear unloading position,
This is a member that comes into contact with the tape 100 from inside the tape 100 at the front tape loading position and guides the tape 100, and corresponds to the tape guide according to claim 2. The tape guide support member 13 is always urged in the rearward unloading direction by the elastic member 15, and as the left tape loading drive member 4A moves forward, the tape guide support member 13 is pressed against the regulation pin 4Ad of the tape loading drive member 4A. When the engaging portion 13b is pressed, the elastic member 15
It is pulled out forward against the urging force of , and is regulated at a predetermined position (FIGS. 2 to 4). In this case, the biasing force of the elastic member 15 that biases the tape guide support member 13 is applied in the opposite direction to the biasing force of the elastic member 5A that biases the tape loading drive member 4A.
The biasing force of the tape loading drive member 4A is set to be much smaller than the biasing force of the elastic member 5A.
It is designed not to affect the operation of the More specifically, the force is set to a level that does not affect the pressing force of the tape loading member IA driven by the tape loading drive member 4A to the position regulating member 2C.

■Cam member...Fig. 5 The cam member 6 is provided so as to be able to reciprocate in the left-right direction of the chassis, and starts from the leftmost stop position shown in Fig. 1 to the fast winding (FF/FF) shown in Fig. 2. REW)・Pose position,
The four positions including the reverse play position shown in FIG. 3 and the rightmost play position shown in FIG. 4 are moved as appropriate. The cam member 6 will be explained below with reference to FIG. 5.

Groove cams 6A and 6B are provided on both sides of the cam member 6 to drive the tape loading drive members 4A and 4B, respectively, and cam followers 4Ac and 4Bc of the tape loading drive members 4A and 4B are attached to the groove cams 6A and 6B. It has been inserted. The grooved cams 6A, 6B act as tape loading drive members 4A, 4B when the cam member 6 moves from the stop position shown in FIG. 1 to the fast winding/pause position shown in FIG.
is guided from the rear unloading position to the front tape loading position while regulating its movement, and when the cam member 6 moves from the fast winding/pause position to the stop position, the tape loading drive members 4A, 4B are It has unloading parts 6Aa and 68a that are driven from the front tape loading position to the rear unloading position against the urging force of the elastic members 5A and 5B.

Further, the cam member 6 is provided with a grooved cam 6C that drives the pinch arm 8 to the rear unloading position. A release part 6Ca holds the arm 8 at a release position close to the crimping position and holds the pinch roller 9 at a release position slightly separated from the capstan shaft 11, and the cam member 6 moves from the stop position to the fast winding/pause position. When moving, the operation of the pinch arm 8 is restricted to guide it from the rear unloading position to the front release position, and when the cam member 6 moves from the fast wind/pause position to the stop position, the pinch arm 8 is , and an unloading portion 6Cb that is driven to the rear unloading position against the biasing force of the elastic member 10.

Furthermore, an engagement groove 6F that is elongated in the front-rear direction is provided at the front right end of the cam member 6. The cam member 6 is connected to the cam member drive mechanism by this engagement groove 6F, and is configured to reciprocate between a stop position on the left side and a play position on the right side.

■Cam member drive mechanism...Figs. 1 to 4 As shown in Figs. 1 to 4, the cam member 6 has shafts 48A and 48B.
It is connected to a power motor (not shown) via a rotatable connecting arm 49 and an output member 50 of the deceleration mechanism, and is driven left and right in the drawing by the driving force of the power motor. That is, the connecting arm 49
An engaging pin 49A is provided at one end, and this engaging pin 4
9A is an engagement groove 6F provided at the front right end of the cam member 6.
is inserted into. Further, an engagement groove 49B is provided at the other end of the connecting arm 49, and a drive roller 50A provided at one end of the output member 50 is inserted into this engagement groove 49B. When the output member 50 rotates in accordance with the rotational direction of the power motor and its drive roller 50A moves to either the left or right, the cam member 6 is driven via the connecting arm 49. For example, when the output member 50 rotates most clockwise in its rotation range, the drive roller 50A
When moves to the rightmost side, as shown in Figure 1,
The connecting arm 49 rotates most clockwise within its rotation range,
The cam member 6 moves to the left-hand stop position. Conversely, when the output member 50 rotates to the farthest point in the rotation range and the drive roller 50A moves to the leftmost side, the connecting arm 49 moves to the farthest point in the rotation range, as shown in FIG. It rotates most counterclockwise, and the cam member 6 moves to the play position on the right side.

Operation of this embodiment* The operation of this embodiment having the above-described configuration will be described next.

■Stop state...FIG. 1 In the stop state, the power motor (not shown) is stopped, and as shown in FIG. is at the most clockwise side of the rotation range, and the cam member 6 is at the left stop position.

In this way, since the cam member 6 is at the leftmost stop position, the left and right tape loading drive members 4A, 4B
The respective cam followers 4Ac and 4Bc are pressed by the unloading parts 6Aa and 6Ba of the grooved cams 6A and 6B of the cam member 6, respectively, and are driven to the rear unloading position against the urging force of the elastic members 5A and 5B. It is maintained in the same condition.

Along with this, the tape loading drive member 4A.

Tape loading members I each engaged with 4B
A and IB are also housed in the cassette mouse.

Further, the pinch arm 8 is held in a state in which the cam follower 8C is pressed by the unloading portion 6Cb of the grooved cam 6C of the cam member 6, and is driven to the rear unloading position against the biasing force of the elastic member 10. Therefore, the pinch roller 9 and the first tape guide 12 are
It is housed in a cassette mouse.

Further, since the left tape loading drive member 4A is at the rear unloading position, the left tape guide support member 13 is not pressed by the tape loading drive member 4A, but is moved backward by the biasing force of the elastic member 15. In the unloading position, the second tape guide 14 is therefore housed within the cassette mouth.

■Stop state - tape loading mode... 1st
When the power motor (not shown) rotates from the stopped state and the output member 50 of the reduction gear mechanism rotates counterclockwise from the position shown in FIG.
moves to the right in the figure. Along with this, the tape loading drive members 4A, 4B are driven by the biasing force of the elastic members 5A, 5B in the tape loading direction. 74Ac and 4Bc are rotated in the forward tape loading direction while being regulated by the unloading parts 6Aa and 5Ba of the grooved cams 6A and 6B, and the tape loading members IA and IB are pulled out from inside the cassette mouth and inserted into the guide grooves 2A and 2B. along the tape loading direction.

By such movement of the tape loading members IA and IB in the tape loading direction, the tape 100 applied thereto is pulled forward, and the tape 100 is pulled out from a reel (not shown).

Further, as the cam member 6 moves to the right, the pinch arm 8 moves its cam follower 8C forward in the tape loading direction while being regulated by the unloading portion 6Cb of the groove cam 6C due to the biasing force of the elastic member 10. Rotate to. Along with this operation, the pinch roller 9 and the first tape guide 12 move forward in the tape loading direction.

Further, as the tape loading drive members 4A and 4B rotate in the tape loading direction, the left tape guide support member 13 has its regulated portion 13b pressed by the regulation pin 4Ad of the tape loading drive member 4A, and the elastic member The second tape guide 14 is rotated in the tape loading direction against the urging force of the second tape guide 15 in the unloading direction, and accordingly, the second tape guide 14 moves forward in the tape loading direction.

■Tape loading complete state (fast winding/pause state)
...When the cam member 6 in FIG. 2 has moved to the fast winding/pause position as shown in FIG. 2, the tape loading drive member 4A,
4B and tape loading members IA, , IB have reached the front tape loading position, and tape loading member IA.

IB is a position regulating member 2C that winds the tape 100 pulled out from the S reel 25A around the rotating drum 3.

It is crimped to 2D. The pressing force in this case is given by the biasing force of the elastic members 5A, 5B that have driven the tape loading members IA, IB to the tape loading position.

In this state, the cam follower 8C of the pinch arm 8 is
The pinch roller 9 is now regulated by the release part 6Ca of the grooved cam 6C, and the pinch roller 9 is held at the release position slightly before it presses against the capstan 11, and the first tape guide 12 is also held at the release position slightly behind the frontmost position. 2 tape loading position.

On the other hand, the left tape guide support member 13 and the second tape guide 14 fixed thereto are held at a tape loading position corresponding to the tape loading position of the left tape loading drive member 4A.

■Reverse play mode...Figure 3 When the power motor further rotates from the fast winding/pause position as shown in Figure 2, and the output member 50 of the reduction gear mechanism rotates counterclockwise, the cam member 6 , move to the reverse play position as shown in FIG. In this state, the cam followers 4A of the tape loading drive members 4A and 4B
c, 4Bc are the unloading parts 6 of the grooved cams 6A, 6B.
Aa.

6Ba regulation has been lifted, tape loading drive member 4
A, 4B and tape loading members 1A, IB are
Like the fast winding/pause state, it is maintained in the forward tape loading position.

On the other hand, the cam follower 8C of the pinch arm 8 is gradually released from the restricted state by the movement of the release part 6Ca of the grooved cam 6C, and when the cam member 6 moves to the rebus play position, the pinch arm 8 moves forward due to the urging force of the elastic member 10. Rotate to the crimping position. Along with this movement, the pinch roller 9 is pressed against the capstan shaft 11, and the first tape guide 12
moves slightly more than in the fast winding/pause state and is fixed at the first tape loading position at the front.

■Play mode...Figure 4 When the power motor further rotates from the reverse play position as shown in Figure 3 and the output member 50 of the reduction gear mechanism rotates counterclockwise, the cam member 6 Move to the playing position as shown.

In this state, the tape loading member IA.

The IB is in the forward tape loading position, similar to the reverse play condition. Further, since the pinch arm 8 is in the front crimping position as in the reverse play state, the pinch roller 9 is in the crimping position, and the first tape guide 12
is in the first tape loading position. Furthermore, the second tape guide 14 is in the tape loading position, similar to the fast wind/pause state and the reverse play state.

■Tape unloading mode...Fig. 2 - Fig. 1 When unloading the tape, the cam member 6 is quickly wound.
Return to the pause position, rotate the reel drive motor at low speed,
While winding the tape, the cam member 6 is moved to the left (toward the stop position) to unload the tape.

When the cam member 6 moves to the left from the fast winding/pause position, the cam followers 4Ac and 4Bc of the tape loading drive members 4A and 4B move to the groove cam 6A.

6B rides on the unloading parts 6Aa, 6Ba, and rotates in the unloading direction against the biasing force of the elastic members 5A, 5B in the tape loading direction, and moves the tape loading members IA, 1B to the guide provided on the chassis. Store it in the cassette mouse along the grooves 2A and 2B.

As the left tape loading drive member 4A moves in the tape unloading direction, the position of the second tape guide 14 is gradually released, and the elastic member 15 biasing the tape guide support member 13 is gradually released. The biasing force rotates the tape in the tape unloading direction and stores it in the cassette mouth.

In addition, the pinch arm 8 also has its cam follower 8C riding on the unloading part 6Cb of the grooved cam 6C, and resists the urging force of the elastic member 10 at almost the same timing as the unloading operation of the tape loading drive members 4A and 4B. In order to rotate in the tape unloading direction, the pinch roller 9 and the first tape guide 12 are housed in the cassette mouth.

Effects of this embodiment* As explained above, in this embodiment, the first tape guide 1 is attached to the pinch arm 8 that drives the pinch roller 9.
2 is integrally provided, the operation of the pinch arm 8 causes the first tape guide 1 to move together with the pinch roller 9.
It is also possible to perform tape loading and unloading of 2. In this case, the first tape guide 12
moves between the first and second tape loading positions as the pinch arm 8 moves slightly between the crimping position and the release position. As can be seen by comparing the figures or FIG. 4, this movement is extremely slight and does not cause any damage to the tape. Therefore, a dedicated drive mechanism is not required for the first tape guide 12, and the number of parts can be reduced.

In addition, the position of the pinch arm 8 is strongly and reliably controlled to the crimping position or the release position by using the elastic member 10 and the cam member 6, which are originally strong for crimping the pinch roller 9. Since the first tape guide 12 provided integrally with the pinch arm 8 can be strongly and reliably fixed to the tape loading position, excellent vibration resistance can be obtained for the first tape guide 12.

On the other hand, although the second tape guide 14 is provided on the tape guide support member 13 as before, the tape guide support member 13 is urged to the unloading position by the elastic member 15, so that the tape Since the biasing force of the elastic member 15 applied to the guide support member 13 and the force applied by the tape during tape loading and tape running are in the same direction, the biasing force of the elastic member 15 that biases the tape guide support member 13 is lower than in the past. It is possible to weaken the force.

Furthermore, since the tape guide support member 13 is biased in the unloading direction by the elastic member 15, although this biasing force may assist the operation in the unloading direction, There is also the advantage that the driving force of the cam member 6 that drives the tape loading drive members 4A, 4B in the unloading direction can be reduced. As a result, the series of cam member drive mechanisms can be downsized, contributing to downsizing of the entire tape leading mechanism.

On the other hand, since the elastic member 5A that drives the tape loading drive member 4A in the tape loading direction inherently has a strong biasing force, the tape guide support member 13 is moved by the biasing force of the strong elastic member 5A. In this embodiment, which is configured to be moved to the loading position and fixed at the same position, the second tape guide 14 is moved to the elastic member 1 during tape loading and tape running.
5 and the tape 100 in the unloading direction, this force is relatively small enough to be ignored. Therefore, in this embodiment, the strong elastic member 5
The biasing force A can strongly and reliably fix the second tape guide 14 together with the tape loading member IA at a predetermined tape loading position.
Excellent vibration resistance can be obtained.

*Other Examples* Note that the present invention is not limited to the above-mentioned Examples,
The drive structure of the pinch roller and the drive structure of the tape loading member can be changed as appropriate, and for example, a structure in which these are driven by separate cam members is of course also possible.

Further, in the above embodiment, the pinch arm itself is directly rotated to perform loading/unloading, but the present invention is not limited to this. A configuration in which the pinch arm is moved back and forth and the rotation of the pinch arm is used only for crimping and releasing can be similarly applied, and similar effects can be obtained.

[Effects of the Invention] As explained above, in the invention of claim 1, by providing the tape guide on the pinch roller side integrally with the pinch arm, although it moves slightly in response to the movement of the pinch arm, there is no damage to the tape. It is possible to strongly and reliably drive and fix the tape guide to the tape loading position by the strong driving force of the pinch roller drive mechanism within a range that does not cause any damage to the tape. Therefore, the tape guide drive mechanism can be omitted, the number of parts can be reduced, the structure can be made smaller and simpler, and an excellent tape loading mechanism with high vibration resistance can be provided.

Further, in the invention of claim 2, by urging the tape guide support member in the unloading direction by the elastic member, the tape guide is strongly and reliably driven to the tape loading position by the strong driving force of the tape loading member. , it is possible to fix it. Therefore,
Compared to the conventional art, the driving force in the unloading direction can be reduced to make the drive configuration smaller and simpler, and it is possible to provide a tape loading mechanism with excellent vibration resistance.

[Brief explanation of drawings]

1 to 4 are plan views showing essential parts of a tape loading mechanism according to an embodiment of the present invention, in which FIG. 1 is in a stop state, FIG. 2 is in a pause state and FF/REW state, and FIG. The figure shows the reverse play state, and FIG. 4 shows the play state. FIG. 5 is a plan view showing the cam member used in the embodiments of FIGS. 1 to 4. FIG. IA, IB...Tape loading member, lAa. IBa... Guide roller, IAb, IBb... Inclined post, I A c, I B c - engaging pin, 2
A, 2B--Guide groove, 2C, 2D--Position regulating member, 3--Rotating drum, 4A, 4B--Tape loading drive member, 4Aa, 48a--Shaft, 4Ab, 4
Bb--Engagement groove, 4Ac, 4Bc--Cam follower, 4Ad--Restriction pin, 5A, 5B--Elastic member,
6...Cam member, 6A, 6B...Groove cam, 6Aa,
6Ba...Unloading part, 6C...Groove cam,
6Ca...Release part, 6cb...Unloading part, 6F...Engagement groove, 8...Pinch arm, 8A...
・Support shaft, 8B...shaft, 8C...cam follower, 9・
...Pinch roller, 10...Elastic member, 11...Capstan shaft, 12...First tape guide, 13.
...Tape guide support member, 13a...shaft, 13b.
...Engaging portion, 14...Second tape guide, 15...
・Elastic member. 48A, 48B... shaft, 49... connecting arm, 49
A... Engagement pin, 49B... Engagement groove, 50... Output member, 50A... Drive roller, 100... Tape.

Claims (2)

[Claims] (1) It is movable and rotatable in the front-rear direction, and moves between a tape loading position in the front and an unloading position in the rear, and a crimping position in the front and a position slightly from this crimping position in the tape loading position. A pinch arm that rotates between the rear release position and the free rotation end of the pinch arm. A pinch roller that moves between a rear release position and a rear unloading position in the cassette mouse; and a pinch roller that is provided on the pinch arm in parallel with the pinch roller, and that moves according to the movement position and rotational position of the pinch arm. It moves between the first and second tape loading positions at the front and the unloading position inside the cassette mouth at the rear, and contacts the tape from the inside of the tape at the first and second tape loading positions at the front. , and a tape guide for guiding the tape. (2) A tape loading member that is movable back and forth, moves between a tape loading position in the front and an unloading position in the rear, and that contacts the tape from the inside of the tape and pulls out the tape when moving forward; a tape guide support member that is rotatably provided and moves between a front tape loading position and a rear unloading position;
provided at the rotatable free end of the tape guide support member, and moves between a front tape loading position and a rear tape unloading position in response to rotation of the tape guide support member;
A tape guide that contacts the tape from the inside of the tape at the front tape loading position and guides the tape, an elastic member that constantly biases the tape guide support member in the rear unloading direction, and a tape guide that rotates or moves in the front-rear direction. The tape loading member is provided so as to be able to drive the tape loading member in at least one of the front and rear directions depending on the direction of rotation or movement, and also engages with the tape guide support member to move it forward when rotating or moving forward. A tape loading mechanism comprising: a rotating tape loading drive member.