JPH0561834U - Post base for guide rollers - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a mounting structure of a guide roller for loading a magnetic tape and its post base in a magnetic recording / reproducing apparatus having a rotary head drum such as a VTR or DAT, and the number of assembling steps and the cost thereof. An object of the present invention is to provide a post base for a guide roller that is reduced in size. [Structure] In the post base 10, the post base 10
The post base bush 13 molded with resin is provided on the
The shaft 15 of the guide roller 14 is press-fitted into the insertion hole 13a of the post base bush 13 to position and fix the guide roller 14 on the post base 10, and the fixing of the guide roller 14 with a screw is omitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic recording / reproducing apparatus for performing magnetic recording / reproducing by sliding a magnetic tape on a rotary head drum such as a video tape recorder (VTR) or a digital audio tape recorder (DAT). Tape guide roller mounting structure.

[0002]

[Prior Art]

 Conventionally, a guide roller mounting structure in a magnetic recording / reproducing apparatus having a rotary head drum has a structure shown in a side view of a partial cross section of FIG. 2, which will be described. As shown in the figure, a conventional guide roller post base 1 includes a zinc die casting base portion 2 provided with an inclined post 3, a brass post base bush 4 press-fitted to one end of the base portion 2, and A guide roller 5 having a screwing portion 6 on the post base bush 4 press-fits and supports a shaft portion 7, and is also screwed and positioned in a screw hole portion 4a of the post base bushing 4 by the screwing portion 6 to stand up. It has been set up.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional post base 1, when the post base bush 4 and the guide roller 5 are assembled, the post base bush 4 and the shaft portion 7 of the guide roller 5 are press-fitted to each other, and then the screw is continued. Since the hole 4a and the screw fastening portion 6 are screwed together and the guide roller 5 is adjusted and positioned in its standing position, the shaft portion 7 is press-fitted when the post base bush 4 is processed. There is a problem that the post base bushing 4 and the shaft 7 of the guide roller 5 become more expensive. Since metal-to-metal press-fitting is used, depending on the machining accuracy, the press-fitting may become too strong, making it impossible to adjust the position by screwing. Problem was also caused. The present invention has been devised in view of the above problems, and an object of the present invention is to provide a post base bush with improved assembling ability and cost reduction when attaching a guide roller.

[0004]

[Means for Solving the Problems]

 Therefore, as a means for solving the above problems, the present invention performs magnetic recording and reproduction by guiding a magnetic tape to a drum equipped with a rotating head and slidingly contacting the magnetic tape. The post base that vertically supports the guide roller post that guides the guide roller post is characterized by including a base portion and a post base bush formed of resin and provided on the base portion.

[0005]

[Action]

 With these configurations, the post base bush and the guide roller can be positioned and retained only by press fitting, which can be done by moving only in the vertical direction during assembly, reducing the man-hours and simplifying the post base bush. Will be planned.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially sectional side view showing an embodiment of the present invention.

As shown in the figure, the post base 10 according to the present invention includes a base portion 11 provided with an inclined post 12 formed by zinc die casting and an insert hole 11 a formed at one end of the base portion 11 by insert molding. The post base bush 13 is made of a resin that is fitted and fixed by the above, and the guide roller 14 is positioned and held by the shaft 15 being press-fitted into the insertion hole 13a of the post base bush 13. Here, when the guide roller 14 is fixedly positioned, the shaft diameter of the shaft 15 is formed to have a size difference larger than the inner diameter of the insertion hole 13a of the post base bush 13. Therefore, when the guide roller 14 is assembled, the shaft 15 is fixed to a predetermined position only by press-fitting the shaft 15 into the insertion hole 13a of the post base bush 13. The post base bush 13 may be assembled to the base portion 11 by press-fitting, in addition to the insert molding.

[0008]

[Effect of the device]

 Therefore, according to the guide roller post base of the present invention having the above-described configuration, the assembly of the guide roller is simplified, and it is not necessary to provide the post base bush with a hole for the screw, and the guide roller is also screwed. It is not necessary to provide a section, and the effect that the cost of the guide roller and the post base can be reduced can be obtained. Further, since the screw portion is not provided, space saving can be achieved and the guide roller portion can be thinned.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a post base according to an embodiment of the present invention.

FIG. 2 is a side view showing a partial cross section of a conventional post base.

[Explanation of symbols]

 10 Post Base 11 Base Part 12 Inclined Post 13 Post Base Bushing 13a Insertion Hole 14 Guide Roller 15 Shaft

Claims (1)

[Scope of utility model registration request] 1. A post for standingly supporting a guide roller post for guiding the magnetic tape to the drum in a magnetic recording / reproducing apparatus for performing magnetic recording / reproducing by guiding and slidingly contacting the magnetic tape to a drum having a rotary head. The base for a guide roller is characterized in that the base includes a base portion and a post base bush formed on the base portion and made of resin.