JPH0543337U - Tape guide mechanism - Google Patents

Abstract

(57) [Summary] [Object] The present invention is to provide a tape guide mechanism which is reduced in the number of parts of the tape guide mechanism and which is easy to assemble. [Structure] The present invention comprises a tape guide lever 5 for pulling out the tape and stabilizing the running, and a bracket 9 for holding the tape guide 4 and also serving as an axial spring. The bracket 9 has an upper portion 9a which functions as a flange,
The tape guide is held by the portion composed of the lower portion 9b, the axial spring is constituted by the curved portion 9d, and the height of the tape guide 4 can be adjusted by rotating the nut 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tape guide mechanism for supplying a tape such as a video tape recorder.

[0002]

[Prior Art]

 FIG. 3 is a diagram showing a conventional tape guide. Reference numeral 1 denotes a tape guide lever, and a rotary shaft portion 2 and a shaft 3 are firmly fixed to the lever 1 by a method such as caulking. Although not shown, parts such as a control head may be mounted on the lever 1.

Reference numeral 4 is a tape guide that directly contacts the tape and applies a predetermined frictional force to the tape for stable running, and reference numerals 5 and 6 are an upper flange and a lower flange that regulate the vertical movement of the tape. Normally, both flanges 5 and 6 are made of pressed parts.

Reference numeral 7 is a spring braking in the direction of the upper flange 5, and reference numeral 8 is a nut for adjusting the height of the tape guide 4 and the like. The height of the tape guide is changed in the axial direction by the spring 7, and becomes lower when the nut 8 is tightened and becomes higher when the nut 8 is loosened.

FIG. 4 is an assembly view of this conventional tape guide. First, the shaft 3 is passed through the center hole of the spring 7, the lower flange 6, the tape guide 4, the upper flange 5, and the nut 8 in this order. As a result, the tape guide as shown in FIG. 3 is completed.

The tape guide 4 is firmly held by the upper and lower flanges 5 and 6 and is not rotated by the force of the tape.

Further, this tape guide smoothly rotates about the rotary shaft portion 2 when incorporated in a video tape recorder.

Then, the tape is properly guided.

[0009]

[Problems to be solved by the device]

 However, the conventional example requires springs for braking together with the upper and lower flanges, increasing the number of parts and increasing the number of working steps.

In addition, the surface density of the upper and lower flanges facing the tape becomes a problem, and it is difficult to determine the front and back due to the shape, although press parts are usually used. For this reason, deburring is performed by polishing, etc., so that the front and back sides can be used without distinction, but it requires extra steps and is very troublesome.

[0011]

[Means for Solving the Problems]

 The present invention relates to a tape guide mechanism comprising a tape guide for keeping the height of the tape in contact with the tape and an adjusting means for adjusting the height, and a braking means and a tape which are braked by the adjusting means. The present invention provides a tape guide mechanism including a braking support member that is integrated with a flange that is formed so as to sandwich it.

[0012]

[Action]

 The present invention does not require the upper and lower flanges of the tape guide and the spring for control, and improves the workability by an integrated member having the effects of the flange and the spring.

[0013]

【Example】

 FIG. 1 is a diagram of a tape guide according to an embodiment of the present invention. The same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 9 is a bracket in which the upper and lower flanges of the conventional example and a spring are integrated. The bracket 9 has an upper part 9a corresponding to the upper flange, a lower part 9b corresponding to the lower flange, a side part 9c connecting the upper part 9a and the lower part 9b and facing the guide roller 4, and a predetermined height from the plane of the tape guide lever 1. And a curved portion 9d having a curved shape, a fixing portion 9e fixed to the tape guide lever 1, and a through-hole portion 9f through which a fixing member (not shown) for fixing penetrates.

FIG. 2 is an assembly view of the tape guide of the present invention. First, the tape guide 4 is sandwiched between the upper portion 9a and the lower portion 9b of the bracket 9, and the lower portion 9b, the tape guide 4, the upper portion 9a, and the screw 8 are passed through the shaft 3 in this order, and the screw 8 is inserted into the threaded portion of the shaft 3. To do. By inserting the screw 8, the bracket 9 is elastically deformed in the A direction with the through hole 9f as a reference, and an effect like a leaf spring is obtained. Then, the bracket 9 is fixed to the tape guide lever 1 by the fixing member.

Here, the height of the tape guide can be adjusted in the axial direction by loosening or tightening the screw 8 by the elasticity of the curved portion 9d of the bracket 9.

That is, the bracket 9 holds the tape guide 4 at both ends of the upper portion 9a and the lower portion 9b, and further, the spring effect of the bending portion 9d generates an axial load between the tape guide 4 and the nut 8. Fix the guide 4 so that it does not rotate.

Further, since the press of the bracket 9 penetrates the curved portion 9d from the convex direction to the concave direction, the oblique line portion of the bracket 9 does not get caught by burrs and the like, and the polishing process is unnecessary.

[0019]

[Effect of the device]

 The present invention can reduce the number of parts and the number of assembling steps. Moreover, it is possible to omit the polishing work that was performed on the flange portion.

Thereby, the cost can be reduced and the mechanism can be simplified.

[Brief description of drawings]

FIG. 1 is an external view of a tape guide of the present invention.

FIG. 2 is an exploded view of the tape guide of the present invention.

FIG. 3 is an external view of a conventional tape guide.

FIG. 4 is an exploded view of a conventional tape guide.

[Explanation of symbols]

 1 Tape Guide Lever 2 Rotating Shaft 3 Shaft 4 Tape Guide 5 Upper Flange 6 Lower Flange 7 Spring 8 Nut 9 Bracket 9a Upper 9b Lower 9c Side 9d Curved 9e Fixed 9f Through Hole

Claims (1)

[Scope of utility model registration request] 1. A tape guide mechanism comprising: a tape guide which is in contact with the tape to maintain the height of the tape; and an adjusting means for adjusting the height. A tape guide mechanism including a braking support member that is integrated with a flange that is formed so as to sandwich the.