KR890007720Y1 - Tape loading system of vcr - Google Patents

Abstract

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Description

VRT's Tape Loading Device

1 is a plan view of an unloading state showing a conventional tape loading apparatus.

FIG. 2 is a bottom view of FIG. 1. FIG.

3 is a bottom view showing a loading state of a conventional device.

Figure 4 is a plan view of the unloading state showing the configuration of the device of the present invention.

Figure 5 is a plan view showing a loading state of the device of the present invention.

6 and 7 are side and bottom views of the guide post assembly which is the main part of the present invention.

* Explanation of symbols for main parts of the drawings

1: loading base 10,10 ': shaft pin

20,20 ': Loading arm 20a: Connector

21,21 ': Loading gear 21a: Connecting pin

22,22 ': guide post assembly 22a, 22b: circular guide protrusion

22c: spring fixing protrusion 22d: guide jaw

22e: protrusion 22f, 22g: a protrusion

22h: Square protrusion 23,23 ': operating plate

23a: connecting pin 23b, 23c: square hole

23d: Connecting protrusion 23e: Hanging groove

24, 24 ': tension spring

The present invention relates to a tape loading device of V-Cal (video cassette recorder), and in particular, the loading arm is fixed to the loading gear and integrated, and the operation plate is connected to the front end of the loading arm to connect the inclined guide post to the operation plate, The present invention relates to a tape loading device in which a coil spring is installed on an inclined guide post assembly and an operation plate to facilitate an assembly operation and to stabilize a loading operation.

In the case of commonly used V-Cal, when the tape is loaded on the head drum, the inclined guide post assembly should be pressed with a proper pressing force to the stopper. In the conventional art, the spring force is wound around the loading gear to transfer the spring force to the loading arm. It was designed to obtain a pressing force.

However, such a structure is deformed to the loading arm when the loading operation is performed for a long time, it is cumbersome to assemble because the spring must be wound in an arc shape, and the loading arm is pushed in one direction by the spring so that it can be operated smoothly. There is a problem that there is, there was a problem that the structure of the loading gear is complicated.

The present invention was devised to solve the problems of the conventional loading device, which simplifies the structure of the loading gear, simplifies the assembly work, and applies less force to the entire loading arm during the loading operation. It is an object of the present invention to provide a loading device that can be assembled without using a separate screw when assembling.

Hereinafter, described in detail by the accompanying drawings of the present invention as follows.

In the middle part of the loading base 1, a through hole 3 into which the head drum 2 installed on the main base is inserted is formed, and around the guide hole 4 and 4 ', the guide hole 4 is formed. V stoppers 5 and 5 'are respectively fixed to the tip end portion 4', that is, the tape inlet and outlet sides of the head drum 2, respectively. Guide post assemblies 8 and 8 'having inclined guide posts 6 and guide rollers 7 are respectively inserted in the guide holes 4 and 4', and two joints are provided on the lower surface of the loading base 1, respectively. The loading arm 9, 9 'is axially pinched by the shaft pins 10, 10', and the guide post assemblies 8, 8 'are respectively connected to the front end thereof, and the lower portion of the shaft pins 10, 10' is connected. The loading gears 11 and 11 'are condensed. The contact surfaces 9a and 9b are formed at one side of the connecting end of the loading arms 9 and 9 ', respectively, and spring hooks 9c are formed to face each other, and the upper surface centers of the loading gears 11 and 11' are respectively formed. The cylindrical body 11a is integrally formed at the same time, and at one side thereof, a spring fixing protrusion 11b positioned between the contact surfaces 9a and 9b is formed, and the fixing protrusion 11b and the spring hook 9c are formed. Both ends of the tension springs 12 and 12 ', the intermediate portion of which is wound around the cylindrical body 11a, are fixed to each other so that the fixing projections of the loading gears 11 and 11' are driven by the elastic force of the tension springs 12 and 12 '. 11b is pressed against the contact surface 9a of the loading arms 9 and 9 '.

In the conventional loading device, the loading gear 11 rotates counterclockwise by a rack size gear (not shown) that rotates with the driving force of the driving motor in the unloading state of FIG. In the direction of rotation, the loading arms 9, 9 'are actuated so that the inclined guide post assemblies 8, 8' connected to the tip end of the guide holes 4, 4 'of the loading base 1 When it is transported to reach the loading state in contact with the stopper (5) (5 '), when the loading gear 11 is further rotated counterclockwise by a predetermined amount in this state, as shown in FIG. The fixing pins 11b of the loading gears 11 and 11 'are separated from the contact surfaces 9a of the loading arms 9 and 9', and the tension springs 12 and 12 'extend. 11 ') receive moments counterclockwise and clockwise, respectively, so that the inclined guide posts (8) and (8') assemblies are stopper (5). Squeezed at 5 '.

Therefore, such a conventional device causes a problem that the loading arms 9, 9 'are easily deformed because the loading arms 9, 9' are subjected to repeated moments, and at the time of assembling the tension springs 12, 12 '. The intermediate part of the springs 12 and 12 'is wound around the outer peripheral surface of the cylindrical body 11a of the loading gears 11 and 11' to which the loading arms 9 and 9 'are connected by coaxial 10 and 10'. Both ends need to be very cumbersome to hang on the spring hangers 9c of the loading arms 9 and 9 'and the fixing pins 11b of the loading gears 11 and 11'. Loading arm (9) (9 ') is pushed in one direction by the tension spring (12) (12') in a state assembling obliquely there was a problem that can not be a smooth operation.

The present invention has been devised to solve such a conventional problem and will be described in detail with reference to the accompanying drawings.

As shown in Figs. 4 to 6, the loading arm 20, 20 'is fixed to the lower surface of the loading base 1 by the shaft pins 10, 10' and the lower gear is engaged with each other. (21) (21 ') are inclined, and both side guide holes (4) and (4') formed around the head drum (2) are inclined guide post assembly (22) connected to the loading arms (20, 20 ') ( In the tape loading apparatus having a 22 'insertion, a connection hole formed in the loading arms 20 and 20' by projecting the connecting pins 21a on the upper surfaces of the loading gears 21 and 21 ', respectively. At the same time, the connecting pin 23a is protruded at the rear end, and square holes 23b and 23c are respectively drilled at one side of the middle and the front end, and projection 23d is formed at one side of the front end square hole 23c. In addition, each of the operation plates 23 and 23 'protruding from the projection 23d is provided with a spring engaging groove 23e, and is provided on the lower surface of the inclined guide posts 22 and 22'. Circular guide protrusions 22a and 22b are formed A spring fixing protrusion 22c is formed in the middle of the guide protrusion 22b, and a guide jaw 22d is formed at the tip end of the guide protrusion 22a, and the protrusion 22e between both guide protrusions 22a and 22b is formed. Guide post assembly 22 exposed through the guide holes 4 and 4 'by forming the protrusions 22f and 22g in a diagonal direction and forming a square protrusion 22h on one side of the protrusions 22f. The operating plates 23 and 23 'are connected to the lower side of the 22', but the operating plates 23 and 23 'are connected to the protrusions 22f and 22g of the guide post assemblies 22 and 22'. The connecting protrusion 23d and the one side surface 23b 'of the square hole 23b are inserted, and the guide post assembly 22 is formed in the square holes 23c and 23b of the operating plates 23 and 23'. 22 '), the square projection 22h and the circular guide projection 22b are fitted, so that the spring hook groove 23e of the operation plates 23 and 23' and the spring of the guide post assembly 22 and 22 '. Both ends of the tension springs 24 and 24 'are fixed to the fixing protrusions 22c, respectively. Reference numeral 25 in the plane denotes a cylindrical holder pressed into the tip guide projection 22a of the guide post assemblies 22 and 22 '. A female thread is formed on the inner circumferential surface of the upper end of the holder 25 so that the guide roller 7 is formed. Combined with screw fit. And 5a and 5'a are guide portions of the stoppers 5 and 5 ', and 22i is a contact protrusion protruding from the lower surface of the guide post assembly 22 and 22', and each contact protrusion 22i is a loading base. It comes in contact with the upper surface of (1).

Referring to the effect of the present invention as described above is as follows.

When the loading gear 21 rotates counterclockwise by the driving force of the driving motor (not shown) in the unloading state shown in FIG. 4, and the loading gear 21 ′ engaged thereto rotates clockwise. Guide post assemblies 22, 22 'coupled to the distal end of the arms 20, 20' are guided by the guide holes 4, 4 'of the loading base 1 to the head drum 2 axis. In this case, the circular guide protrusions 22a and 22b of the guide post assemblies 22 and 22 'move along the guide holes 4 and 4', and thus the guide holder 25 is the stopper 5. Along the guides 5a and 5a 'of the 5', respectively, the motor stops by entering the stops. When the loading gear 21 is further rotated counterclockwise by a predetermined amount, the operating plates 23 and 23 'are A. Direction so that the tension springs 24, 24 'are stretched so that the guide post assemblies 22, 22' are pressed against the stopper 5, 5 '.

Again, in order to unload the guide post assemblies 22 and 22 'from the stopper 5 and 5', when the loading gear 21 is rotated clockwise with the driving force of the driving motor, the operation plate 23 ( 23 'is moved in the opposite direction of A, and the connecting protrusion 23d and the square hole 23b of the operating plates 23 and 23' are formed with the protrusions 22f of the guide post assemblies 22 and 22 '. 22 g) is pushed in to unload.

On the other hand, such a projection (22f) (22g) should be long enough so that the connecting projection (23d) and the square hole (23b) is not separated when the operating plate (23) (23 ') moves in the A direction or the reverse direction, The protrusions 22f and 22g of the guide post assemblies 22 and 22 'are coupled to the connecting protrusions 23d and the square holes 23b of the operating plates 23 and 23'. It is possible to move without departing from the guide hole (4) (4 ') of the loading base (1) without using a screw.

As described above, the present invention simplifies the structure of the loading gear, eliminates the hassle of assembling the spring to the circular cylinder to fix the loading gear and the loading arm, and also prevents the loading arm from being pressed by the spring. Since the loading arm is not assembled at an angle, it can be operated smoothly, and there is an advantage that an excessive force is not applied to the loading arm during the loading operation, so that the assembly efficiency is improved and the loading operation is stable and has a smooth effect.

Claims (1)

On the lower surface of the loading base 1, the loading arms 20, 20 'are compressed by the shaft pins 10, 10', and the loading gears 21, 21 ', which are interlocked with the lower portion thereof, are compressed. (2) a tape loading apparatus having an inclined guide assembly (22) or (22 ') inserted into both side guide holes (4) and (4') and connected to the loading arms (20) and (20 '). (21) (21 ') is inserted into the connecting hole (20a) formed in the loading arm (20, 20') of the connecting pin (21a) formed on the upper surface of the loading arm (20, 20 ') of the loading gear (21) (21 ') to be fixed integrally, the connecting pin (23a) is protruded in the rear end and the square hole (23b) 23c is drilled in one side of the middle and the front end and one side of the front end square hole (23c) The guide post assemblies 22 and 22 are respectively formed on the operating plate 23 and 23 'which are provided with a hook groove 23e protruding from the connecting protrusion 23d and proximate the connecting protrusion 23d. Circular guide protrusions 22a and 22b are formed on the lower surface of the upper surface of the " 22d), a spring fixing protrusion 22c is formed at the center of the guide protrusion 22b, and the protrusions 22f and 22g are formed at the protrusions 22e between the guide protrusions 22a and 22b. 22h), the connecting protrusion 23d of the operation plates 23, 23 'and one side 23b' of the square hole 23b are formed on the lower surface of the guide post assembly 22, 22 '. And a square protrusion (h) of the guide post assembly (22) and (22 ') in the square holes (23c) and (23b) of the operation plates (23) and (23'). The circular guide protrusion 22b is fitted into the hook groove 23e of the operation plates 23, 23 'and the spring fixing protrusion 22c of the guide post assembly 22, 22'. 24 ') is fixed to both ends of the V-AL tape loading apparatus, characterized in that the configuration.