JPS6313160A - Fast winding post drawing mechanism - Google Patents

Abstract

PURPOSE:To obtain a reliable magnetic recording device by drawing a fast winding post with the aid of a driving motor for cassette loading. CONSTITUTION:The cam pin 4a of a specification link 4 turns to the right side in figure with the rotation of a driving gear and a driving link 3 linked to the specification link 4 by a link shaft 5 turns in a clockwise direction, so that the engagement pin of a fast winding post driving plate 9 inserted in an engagement hole 3a moves to the left side. As a result, through first and second link gears 11 and 12 linked to the driving plate 9, a fast winding post drawing gear 13 on the right side turns in the clockwise direction which is a releasing direction and a fast winding post block 15 turns to the fast winding position by the energizing force of a spring, so a fast winding post 14 on the right side moves to the fast winding position. Moreover a fast winding post link plate 17 moves to the left side and the fast winding post drawing gear on the left side moves in a counterclockwise direction which is releasing direction, so that a fast winding post block 21 on the left side turns to the fast winding position by the energizing force of a spring 22 and a fast winding post 20 on the left side moves to the fast winding position.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a fast-winding method that enables high-speed running during fast-forwarding and rewinding operations in a magnetic recording device equipped with a rotating head such as an AMM video. This relates to a mechanism for pulling out a post.

(Prior Art) In recent years, technological developments based on consumer needs have led to the practical use of magnetic recording devices equipped with rotating heads, such as those for 6 mm videos, and there is a demand for further downsizing and simplification.

In addition to the cassette loading operation, such magnetic recording devices require a so-called tape loading operation in which the tape is pulled out from the loaded cassette and wound around a rotating head. is provided.

For example, in the case of 8 mm video, in order to increase the amount of recorded information, there are some models in which tape is wrapped around a rotary head over three quarters of the entire circumference. In such a mechanism, a loading block equipped with a guide roller and an inclined post, and a sub-block equipped with an inclined post are advanced along a rotating head, a pinch roller is advanced, and the left and right ends are moved forward. It is necessary to move the winding post block forward.

Conventionally, loading blocks, sub-blocks,
The pinch roller and quick-winding post were driven by a drive motor for tape loading, but since the operation timing of each member is different, if these were driven by a single drive motor, the operation would become complicated. , problems such as interference between members occurred.

Incidentally, the above-mentioned problems are not limited to 8 mm videos, but also exist in tape recorders and the like having a similar configuration.

(Problems to be Solved by the Invention) As mentioned above, in the conventional magnetic recording device using a rotating head, the configuration of the tape loading mechanism becomes complicated.
There were problems such as the members being exposed to each other.

The present invention was proposed to solve these problems, and its purpose is to provide a fast-winding post that operates relatively simply compared to the loading block, sub-block, pinch roller, etc. By performing the operation of pulling out the eyelashes using a drive system separate from the tape loading mechanism, the configuration of the tape loading mechanism can be simplified, eliminating problems such as interference between parts, and creating a highly reliable magnetic recording device. It is an object of the present invention to provide a quick-winding post pull-out mechanism.

[Structure of the Invention] (Means for Solving the Problems) The quick-winding post pull-out mechanism according to the present invention focuses on a cassette loading mechanism with relatively simple operation, and divides the power of its drive motor to quickly roll out the post. The feature is that the winding post is pulled out.

(Function) With the above-described configuration, the present invention has a drive motor for tape loading that only needs to move the loading block, sub-block, and pinch roller forward, which is significantly greater than before. The structure can be simplified, and the members do not interfere with each other. In addition, since the original operation of the cassette loading mechanism is a simple operation of moving the cassette forward and downward, even if the drive motor is used to pull out the quick-winding post, the There is no need to complicate the drive configuration.

(Embodiment) Hereinafter, one embodiment of the quick-winding post pull-out mechanism according to the present invention will be described in detail with reference to the drawings.

*Configuration of the Embodiment In FIG. 1, reference numeral 1 denotes a drive gear that rotates clockwise in the figure around a shaft 2 for cassette loading by a drive motor for cassette loading.

On the outside of this drive gear 1, as shown in FIG. 2, a drive link 3 and a regulation link 4 are provided in this order. The drive link 3 and the regulation link 4 are rotatably attached to each other by a connecting shaft 5. The drive link 3 is rotatably provided around a shaft portion 1a formed in the drive gear 1.
An engaging pin 9atj of a quick-winding post drive plate 9, which will be described later, is engaged in an engaging hole 3a provided at the lower end in the figure. A cam pin 4a is provided on the regulation link 4, and this cam pin 4a connects to a groove cam 1b provided on the drive gear 1.
The drive gear 1 is inserted into the drive gear 1 and is configured to swing according to the rotation angle of the drive gear 1. In this case, regulation 11i1J link 4
The cam pin 4a is located at the large diameter portion of the groove cam 1b of the drive gear 1 during cassette loading (therefore, the cam pin 4a is located at the large diameter portion of the grooved cam 1b of the drive gear 1).
is fixed), and after cassed loading is completed, it moves from the inclined part to the small diameter part. Roughly speaking, the swing range of the regulation link 4 is the engagement hole 4b into which the shaft portion 1a is inserted.
regulated by the dimensions of

Further, a cassette loading gear 7 is provided on the side of the device side plate 6 of the drive gear 1 and overlapped therewith. The cassette loading gear 7 is provided with an engagement pin 7b, which is inserted into an engagement groove 1C provided in the drive gear 1. Further, a spring 7a as shown in FIG. 2 is provided between the drive gear 1 and the cassette loading gear 7, and this spring 7a causes the cassette loading gear 17 to move clockwise (cassette loading) with respect to the drive gear 1. direction). Therefore, during cassette loading, the loading gear 7 rotates integrally with the drive gear 1 by locking the engagement pin 7b with the locking portion at the end of the engagement groove 1C of the drive gear 1. It looks like this. Furthermore, the cassette loading gear 7 is
When loading the cassette is completed, it is fixed at the loading completion position by a fixing member (not shown), and the engagement pin 7b moves to the relief part of the engagement groove 1C of the drive gear 1. In addition, in FIG. 2, 8 is a cassette holder driven by the cassette loading gear 7, 8a is a guide pin of the cassette holder 8, and 6a is provided on the device side plate 6 to guide the guide pin of the cassette holder 8. The guide groove is

In FIG. 5, the fast-winding post drive plate 9 has an engagement pin 9a with the drive link 3 at the rear and a rack 9 at the front.
b, and are provided so as to be movable back and forth by inserting fixing pins 10 fixed on the device board into slide holes 9G provided in the front and rear. The rack 9b of the fast-winding post drive plate 9 has first and second connecting gears 1.
1.12, the right (first) quick-winding post pull-out gear 13 is connected. The right quick-winding post pull-out gear 13 is provided coaxially with the right-hand quick-winding post block 15 having the right quick-winding post 14 at its tip. The right fast-winding post block 15 is biased toward the fast-winding position (clockwise in the figure) by a spring 16, and when the device is not in use, when loading a cassette, or when ejecting, one end of its engagement notch 15a is held in the retracted position as shown in FIG. 5 by being locked by the locking portion 13a of the right quick-winding post drawer gear 13.

The fast-winding post connecting plate 17 is provided in a direction perpendicular to the fast-winding post drive plate, and has first and second racks 17a and 17 at its right and left ends, respectively.
b is formed. The fast-winding post connecting plate 17 is provided so as to be movable back and forth in the left-right direction by inserting fixing pins 18 fixed to the device board into slide holes 17C provided on the left and right sides thereof. The first rack 17a of the fast-winding post connection plate 17 meshes with the right-hand fast-winding post pull-out gear 13. The second rack 17b of the fast-winding post connection plate 17 is located on the left side (the second rack 17b).
It meshes with the quick-winding post drawer gear 19.

The left fast-winding post pull-out gear 19 is coaxially provided with a left-hand fast-winding post block 21 having a left fast-winding post 20 at its tip.

The left fast-winding post block 21 is biased toward the fast-winding position (counterclockwise in the figure) by a spring 22, and its engagement notch 21a is pressed when the device is not in use, when loading a cassette, and when ejecting a cassette. By locking one end with a locking portion 19a of the left quick-winding post pull-out gear 19, it is held in the retracted position as shown in FIG.

Further, the right fast-winding post block 15 is regulated to the fast-winding position by the base of the guide post 23, and
The left fast-winding post block 21 is regulated to the fast-winding position by a shaft 24 of a tension arm (not shown). In this example, the guide post 23
The shaft 24 of the tension arm and the shaft 24 of the tension arm each serve as a fast winding position regulating member.

Function of this embodiment The structure of this embodiment having the above-mentioned structure is as follows.

First, during cassette loading, the drive gear 1 starts rotating clockwise in the figure from the state shown in FIG. 1 due to the rotation of a cassette loading motor (not shown). As a result, the cassette loading gear 7 rotates together with the drive gear 1 due to the urging force of the spring 7a. As a result, the cassette holder 8 is driven, and the guide pin 8a of the cassette holder 8 advances and descends on the guide groove 6a from the rear position (left side in the figure) in FIG. 1, and moves to the loading position in FIG. 3.

On the other hand, at this point, the regulating link 4 is fixed by the cam pin 4a moving on the large diameter portion of the grooved cam 1b, and therefore the driving link 3 connected to the link by the connecting shaft 5 is also fixed. Fixed.

At the time of completion of cassette loading shown in Fig. 3,
The cassette loading gear 7 is fixed at the position shown in the figure by a fixing member (not shown). Therefore, after this, the drive gear 1 will rotate against the spring 7a provided between it and the cassette loading gear 7. In addition, in Figure @3, the cam pin 4a of the regulation link 4 is located at the entrance of the inclined part to the small diameter part of the full cam 1b of the drive gear 1. Therefore, as the drive gear 1 rotates thereafter, the regulation link 4a rotates forward (to the right in the figure). As a result, the drive link 3 connected to the regulation link 4 by the connection shaft 5 rotates clockwise in the figure, and the engagement pin 9a of the quick-winding post drive plate 9 inserted into the engagement hole 3a. moves backwards (moves to the left in the figure).

As a result, as shown in FIG. 6, the right quick-winding post pull-out gear 13 is in the release direction via the first and second connecting gears 11, 12 connected to the quick-winding post drive plate 9. Rotate in a clockwise direction. As a result, the fast-winding post block 15 is rotated to the fast-winding position by the biasing force of the spring 16, and the right-hand fast-winding post 14 is therefore moved to the fast-winding position. Roughly, the quick-winding post connecting plate 17 moves to the left in the figure, and this movement causes the left-hand quick-winding post pull-out gear 19 to move counterclockwise in the figure, which is the release direction. As a result, the left fast-winding post block 21 is rotated to the fast-winding position by the urging force of the spring 22, and therefore the left fast-winding post 20 is moved to the fast-winding position.

The right-hand fast-winding post block 21 is locked in the fast-winding position by the base of the guide post 23, and the left-hand fast-winding post block 21 is locked in the fast-winding position by the shaft 24 of a tension arm (not shown). .

As described above, in this embodiment, by using the driving force of the drive motor for cassette loading to draw out the fast-winding post with a simple configuration, it is possible to reliably draw out the fast-winding post. Therefore, compared to the conventional case where a tape loading mechanism is used to quickly pull out a post, the configuration of the tape loading and loading mechanism can be simplified, and problems such as interference between members can be solved. As a result, it is possible to provide a simpler and more reliable magnetic recording device, which is extremely effective especially in AMM videos, etc., which have been attracting attention recently.

*Other embodiments The present invention is not limited to the above embodiments, and the drive configuration from the drive motor for cassette loading to the fast-winding post can be selected as appropriate. For example, a single drive gear By meshing two intermittent gears with each other and rotating these intermittent gears at different timings, it is possible to configure each intermittent gear A7 to perform a cassette loading operation and a quick-winding post withdrawal operation, respectively.

[Effects of the Invention] As explained above, according to the quick-winding post pull-out mechanism of the present invention, by improving the simple configuration in which the fast-winding post is pulled out by the drive motor for cassette loading, the drive motor for tape loading can It is possible to provide a magnetic recording device that is simpler and more reliable than the conventional technology in which the post is pulled out quickly.

[Brief explanation of drawings]

1, 3, and 4 are side views showing the structure of the drive side of an embodiment of the quick-winding post pull-out mechanism according to the present invention, and FIG. 2 is taken along line A-A in FIG. 1. Cross section, 5th
Both this figure and FIG. 6 are plan views showing the structure of the early winding post side in the same embodiment. DESCRIPTION OF SYMBOLS 1... Drive gear, 1a... Shaft part, 1b... Cam gear, 1C... Engagement hole, 2... Shaft, 3... Drive link, 3a... Engagement hole, 4 ... Regulation link, 4a...
・Cam bin, 4b...Engagement hole, 5...Connection shaft, 6.
...Device side plate, 6a...Guide groove, 7...Cassette loading gear, 7a...Spring, 7b...
Engagement pin, 8... Cassette holder, 8a... Guide pin, 9... Fast winding post drive plate, 9a...
Engagement pin, 9b... rack, 9C... slide hole,
10...Fixed bin, 11.12...Connection gear, 13
, 19... Fast winding post drawer gear, 13a, 19a
... Locking part, 14, 20 ... Quick winding post, 15,
21... Fast-rolling post block, 15a. 21a...Engagement notch, 16.22...Spring, 17...Quick winding post connection plate, 17a, 1
7b...Rack, 17c...Slide hole, 23...
・Guide post, 24...Tension arm axis. ? jll! 1 Q Figure 2 311J Figure 4

Claims (2)

[Claims] (1) After loading the cassette, in a quick-winding post pull-out mechanism that advances the fast-winding posts provided on the left and right sides from a specified position corresponding to the cassette lowering position to the fast-winding position, the left and right fast-winding posts are linked by means such as a gear. A quick-winding post drawer mechanism configured to be pulled out by a drive motor for cassette loading through the cassette loading drive motor. (2) As interlocking means: a. A drive gear connected to a drive motor for cassette loading. b. A fast-winding post drive plate that moves back and forth with the rotation of the drive gear and rotates the first fast-winding post drawer gear. c. First and second quick-winding post drawer gears that rotate the left and right quick-winding posts, respectively. d, the first gear that meshes with the first and second quick-winding post drawer gears;
, a quick-roll post connection plate with a second rack on each side. The quick-winding post pull-out mechanism according to claim 1, which uses a mechanism comprising each of the requirements a to d above.