KR890003890Y1 - Tape guide roll - Google Patents

Abstract

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Description

VT's guide roller assembly structure

1 is a longitudinal sectional view showing a conventional guide roller assembly.

2 is a perspective view showing a setting screw used in the assembly of a conventional assembly.

Figure 3 is a longitudinal cross-sectional view of the guide roller assembly assembly of the present invention.

4 is a plan view of FIG.

Figure 5 is a perspective view showing a state of assembling the assembly of the subject innovation.

* Explanation of symbols for main parts of the drawings

11: Base 11a: Screw Groove

13: shaft 12a; screw groove

13,13 ': Up and down collarer 13a: Hanging piece

13b: Insertion hole 13c 13c ': Tool insertion groove

14: guide roller 15: bush

16: fixing screw 17: fixing member

18: coil spring

The present invention relates to a guide roller assembly which is located at the tape inlet / outlet side of the head drum in VHS type VTal to contact and drive the tape to the height prescribed in the head drum. In particular, the structure is designed to simplify the assembly operation. An improved guide roller assembly is provided.

Conventionally used guide roller assembly has a shaft (3) in which the upper and lower rollers (1) (1 ') are fixed to the upper and middle portions and the guide roller (2) is inserted therebetween, as shown in FIG. Press-fit the fixing member 4 on the outer peripheral surface of the lower part of the lower collar 1, and insert the shaft 3 into the bush 6 press-fitted into the base 5 and adjust the height. Insertion and setting of the setting screw 7 (see FIG. 2) having the hexagonal groove 7a in the screw hole 6a of (6) maintains the adjusted height of the shaft 3 and the guide roller 2 firmly. It is structured to be able.

However, such a guide roller assembly of the prior art uses a wrench that can be fitted into the hexagonal groove 7a formed in the setting screw 7 having a diameter of about 20, and the setting screw 7 is perpendicular to the bush 6. ), It is difficult to assemble in a state where many parts of the traveling system are concentrated, and the setting screws 70 and the bush 6 are easily worn.

The present invention is designed to solve such a defect of the conventional guide roller assembly, and first, press-fit the shaft provided with the upper end of the screw groove to the base and insert the bush integrated with the upper and lower collars and the guide to the shaft. By fixing the fixing member fixed to the lower end of the bush in the screw groove formed in the base around the shaft by screwing the fixing screw to the upper screw groove of the shaft in the vertical direction to maintain the height adjustment bar When described in detail by the accompanying drawings as follows.

As shown in FIGS. 3 and 4, upper and lower collars 13 and 13 'are provided at upper and middle portions of the shaft 12 mounted on the base 11, and the upper and lower collars ( 13) (13 ') between the guide roller 14, the shaft 12 is fixed to the base 11 by press-fitting the center of the upper end to form a screw groove 12a of a predetermined depth and the base ( A shaft groove 11a of a constant diameter is formed around the shaft 12 of the shaft 11, and a swelling 15 to which the sharp shaft 12 is fitted is formed to form the guide roller 14 in the bush 15. ) Is inserted into the upper and middle portions of the upper and lower collars 13 and 13 'to be integrated with each other, and the insertion hole 13b has a hooking portion 13a rounded around the upper collar 13. ) And a fixing screw 16 fastened to the screw hole 12a of the shaft 12 is inserted into the insertion hole 13b, and a tool insertion groove 13 is formed around the upper surface of the upper collar 13. (13 ') and the fixing member 17 is fastened to the outer peripheral surface of the lower end of the bush (15) is fastened to the screw groove (11a) of the base (11), reference numeral 18 in the figure is the upper end of the shaft 12 And between the engaging piece 13a of the insertion hole 13b of the upper collar 13 to allow the fixing screw 16 to be inserted therein, and a cog insertion groove 13c (around the top surface of the upper collar 13) ( 13c ') is fixed to the fixing member 17 which is fastened to the screw groove 11a of the base 11 on the outer circumferential surface of the lower end of the bush 15. In the drawing, reference numeral 18 denotes an upper end of the shaft 12. It is installed between the engaging pieces 13a around the insertion hole 13b of the upper collar 13 to show the spring to firmly fasten the fixing screw 16. 19 is a washer for spreading the fastening force to a larger area. 20 shows the fastening tool and 21 shows the inclined guide post placed in the base 11.

When assembling the guide roller assembly of the present invention, the bush 15 having the upper, lower rollers 13, 13 'and the guide roller 14 integrally assembled to the shaft 12 press-fitted to the base 11 is assembled. Insert the lower end fixing member 17 of the bush 15 into the threaded groove 11a of the base 11 by screwing and adjust the height of the bush 15 so that the head 15 is properly brought into contact with the head drum during tape driving. Thereafter, the fixing screw 16 is inserted into the insertion hole 13b of the upper collar 13 and the fixing screw 16 is fastened to the upper threaded groove 12a of the shaft 12 so that the bush 15 and the guide roller ( 14) to maintain the adjusted height.

According to the present invention, the upper and lower rollers and the guide roller are integrated into the bush, and then the bush, which is integrated with the upper and lower, the collar and the guide roller, is inserted into the shaft inserted into the base and inserted into the bush. As the fixing screw is inserted in the direction perpendicular to the base in the state where the height is first adjusted, the direction of use of the tool for fastening and releasing the guide roller assembly is vertical so that it is easy to work in a complex machine. Is supported by the coil spring force, the fastening state has a more robust advantage.

Claims (1)

In the base 11, the shaft 12 is installed, and the guide roller 14 is inserted between the upper and lower rollers 13 and 13 'located at the upper end and the middle of the shaft 12. The guide roller 14 is inserted into the bush 15 through which the shaft 12 is press-fitted to the base 11 and the thread groove 11a is formed around the shaft 12 at the base 11 and the shaft 12 is inserted. Insert and insert the upper and lower collars 13, 13 'in the upper end and the middle portion to be integrated, but the insertion hole 13b which is hooked around the engaging piece 13a in the center of the upper collar 13 And insert the fixing screw 16 fastened to the screw hole 12a at the upper end of the shaft 12 into the insertion hole 13b, and the tool insertion grooves 13c and 13c on the upper surface of the upper collar 13. And a fixing member 17 which is fastened to the screw groove 11a of the base 11 on the outer circumferential surface of the bush 15 while the locking piece 13a of the upper collar 13 and the shaft ( 12) Guide roller assembly of a structure V tial, characterized in that the configuration tanseol a coil spring 18 provided between the upper end.