KR940007629B1 - Take-up device of magnetic recording/reproducing - Google Patents

Abstract

The apparatus for loading and unloading a take-up post (31) guiding a tape (7) with a simple structure includes a take-up arm (30) taking a part of the take-up post, a gear (25) for driving a pinch roller (26), a shaft fixing the take-up arm at the middle part, a gear (33) formed on the another part of the take-up arm to gear to an operation gear (25). A gear (33) of the take-up arm equips circular arc type contact parts (33b,c) on both sides of gear teeth (33a).

Description

Take-up device of magnetic record player

1 to 4 are plan views showing the configuration and operation of the take-up device according to the present invention.

1 is a plan view showing an unloading state.

2 is a plan view showing a process of loading.

3 is a plan view showing a loading state.

4A, 4B, and 4C are enlarged plan views of main parts in FIGS. 1, 2, and 3;

* Explanation of symbols for main parts of the drawings

1: Loading Motor 26: Pinch Roller Driving Gear

25: Pinch roller drive gear 30: Take-up arm

31: take-up post 32: axis

33: gear portion 33a: gear teeth

33b, 33c: arc-shaped contact

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a take-up device of a magnetic recorder, and more particularly, to a take-up device of a magnetic recorder capable of driving a take-up post guiding a tape in a tape loading mode by a simple driving structure.

Conventional video tape cassette recorders employ a take-up device for guiding the tape to travel along a defined path in a loading mode in which the tape is compressed between the pinch roller and the capstan shaft.

The conventional take-up device connects a transmission gear to a cam gear that rotates with the rotational force of the loading motor, connects a pinch roller drive gear to the transmission gear, and interlocks the sac gear gear to a cam groove formed on the upper surface of the pinch roller drive gear. It is supposed to drive the take-up arm.

Therefore, in the conventional take-up apparatus, many parts are used, and the configuration is complicated, which leads to a decrease in productivity and a cost of the product.

The present invention has been made in order to solve the above-mentioned conventional defects, the take-up arm is formed by a simple configuration in which a gear portion having a gear tooth and an arcuate contact portion at one end of the take-up arm is interlocked with the pinch roller operating gear. The loading and unloading of the up post is to be made. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing the configuration of a take-up device for a magnetic recording / playback apparatus according to the present invention in an unloading state, and FIG.

In the drawing, 1 is a loading motor, 10 is a capstan shaft, 20 is a pinch driving unit, and an integral first spur gear 2 and a first worm 3 are coupled to the axis of the loading motor 1, 2 spur gear (4) and the second worm (5) is installed in parallel, the second worm (5) of the actuating gear (8) formed with the standby gear (6) and the small gear (7) integrally The gear 6 is connected.

The pinch driving part 20 is provided with a lifting cylinder 22 on the shaft 21 so as to be lifted up and down by a cap cylinder 23, the gear 24 of the cam cylinder 23 is a pinch roller driving gear ( 25), the other end of the pinch arm 27, in which the pinch roller 26 is condensed at one end, is condensed on the same shaft 21 on the upper side of the elevator 22, and the elevator 22 The support lever 22a and the pinch arm 27 are connected to the crimp spring 29.

A cam lever 27 is formed at a lower side of the elevating cylinder 22, and a cam pin 27a is formed at a portion of the cam lever 27 to form a crimping cam groove formed on an upper surface of the pinch roller drive gear 25. Inserted into 25a).

In one side of the pinch roller drive gear 25, the intermediate portion of the take-up arm 30, in which the take-up post 31 for guiding the tape T, is fixed at one end thereof to the shaft 32. On the other end of the take-up arm 30, a gear portion 33 is formed to engage with the pinch roller actuating gear 25.

As for the gear part 33 of the said take-up arm 30, arcuate contact parts 33b and 33c are formed in the both sides of the gear tooth 33a.

In the figure, reference numeral C denotes a tape cassette, and 34 denotes a guide post.

In the take-up device of the present invention as described above, the pinch roller operating gear 25 is rotated by the rotational force of the loading motor 1 in the unloading state as shown in FIGS. 1 and 4, so that the pinch roller 26 is loaded. When the gear teeth 33a of the take-up arm 30 are engaged with the pinch roller operating gear 25 as shown in FIGS. 2 and 4, the take-up arm 30 rotates by a predetermined angle. As shown in FIG. 3, the take-up post 31 stops when it is in the loading position. After the take-up post 31 is in the loading state, the pinch roller actuating gear 25 is loaded with the loading motor 1. Even if it rotates further in the same direction due to the rotational force of, as shown in FIG. 30 and the take-up post 31 remain in place without moving.

In this loading state, after performing the regeneration mode or the like of V-Cal, and in the unloading mode, when the pinch roller operating gear 25 rotates by the reverse rotation of the loading motor 1, the take-up post 31 is rotated. On the contrary, the pinch roller actuating gear 25 of the loading motor 1 is returned to the state of FIG. 1 from the state of FIG. 3 to the state of FIG. 1 after returning to the state of FIG. Even if it continues to rotate in the same direction by the rotational force, as shown in Fig. 4A, the rear arc-shaped contact portion 33c of the take-up arm 30 is in contact with the outer circumferential surface of the pinch roller operating gear 25, so the take-up The arm 30 and the take-up post 31 do not move to maintain their position.

As described above, the present invention forms a gear portion 33 having a gear tooth 33a and an arcuate contact portion 33b, 33c at one end of the take-up arm 30 to pinch roller actuating gear 25. Loading the take-up post 31 by a simple configuration to be linked to. And it can be unloaded, and thus there is an advantage that is very advantageous in light and small (輕薄 單 小) of the product, it is possible to reduce the number of parts used, there is an advantage that contributes to cost reduction of the product.

Claims (2)

The intermediate part of the take-up arm 30 in which the take-up post 31 for guiding the tape 7 on one side of the pinch roller drive gear 25 for driving the pinch roller 26 is fixed to one end thereof. And a gear portion 33 formed at the other end of the take-up arm 30 so as to be engaged with the pinch roller operating gear 25, wherein the take-up device of the magnetic recording player is constructed. 2. The take-up of a magnetic recording and reproducing apparatus according to claim 1, wherein the gear portion (33) of the take-up arm (30) is formed with arc-shaped contact portions (33b) (33c) at both sides of the gear tooth (33a). Device.