JPH0521314U - Magnetic head mounting mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to easily and firmly attach the magnetic head case to the head mount. [Structure] A dovetail groove 3 on the magnetic head case 1, a long elastic piece 9 that elastically engages the dovetail groove 3 on the head mounting base 7, and an elastic locking piece that is elastically deformed by being pressed by the bottom surface 3 of the head mounting base. 11 is provided, and the dovetail groove 3 of the magnetic head case 1 is elastically engaged with the elastic piece 9, and when the elastic engagement is completed, the elastic locking piece 1 is provided.
1 elastically returns to engage with the magnetic head case, and the dovetail groove 3
The elastic piece 9 is prevented from coming off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic head mounting mechanism that facilitates mounting of a magnetic head such as a VTR on a head mounting base.

[0002]

[Prior Art]

 As a magnetic head mounting mechanism in a VTR or the like, a dovetail groove is formed on the head mounting base, a long elastic piece is formed on the magnetic head case, and the dovetail groove and the elastic piece are elastically engaged with each other to form a magnetic head. A structure in which the case is attached to the head mount is disclosed in Japanese Utility Model Laid-Open No. 63-62907.

[0003]

[Problems to be solved by the device]

 In this conventional magnetic head mounting mechanism, the mounting state of the magnetic head case is uncertain because the mounting of the magnetic head case is simply performed by the elastic engagement between the dovetail groove and the elastic piece. Further, if the mounting state is to be strengthened, the elastic engaging force between the dovetail groove and the elastic piece must be strengthened, resulting in a problem that assembly work becomes difficult.

It is an object of the present invention to provide a magnetic head mounting mechanism which is easy to assemble and can be firmly mounted.

[0005]

[Means for Solving the Problems]

 A dovetail groove is formed on the magnetic head case, and a long elastic piece is formed on the head mounting base. The dovetail groove and the elastic piece are elastically engaged to attach the magnetic head case to the head mounting base. In the mechanism, an elastic locking piece is formed on the head mount, and elastic deformation of the elastic stop piece enables elastic engagement between the dovetail groove and the elastic piece. When the elastic engagement is completed, the elastic locking piece elastically returns to engage with the magnetic head case to prevent the dovetail groove and the elastic piece from coming off.

[0006]

[Action]

 While the elastic locking piece is elastically deformed, the dovetail groove and the elastic piece are elastically engaged, and when the elastic engagement is completed, the elastic locking piece elastically returns and engages with the magnetic head case. Prevent it from coming off.

[0007]

【Example】

 FIG. 1 is an exploded perspective view showing an embodiment of the present invention, in which a magnetic head case 1 has a bottomed dovetail groove 3 on the bottom surface 2, a terminal 5 for connecting to the magnetic head on the top surface 4, and a front surface 6 on the tape. It is a sliding contact surface.

On the head mounting surface 8 of the synthetic resin head mounting base 7, two elongated L-shaped elastic pieces 9 having an inverted L shape are projected in parallel. An opening 10 is provided in the vicinity of the elastic pieces 9, and an elastic locking piece 11 is formed in the opening 10. This elastic locking piece 11 has a hook portion 13 at the tip of an elastic arm portion 12, and the hook portion 13 projects above the head mounting surface 8. Further, the head mounting base 7 is provided with a locking piece 15 having an engaging recess 14 continuous with the head mounting surface 8.

Further, the head mounting base 7 has a chassis fixing portion 16 adjacent to the head mounting surface 8. The chassis fixing portion 16 has a shape in which a cylindrical portion 18 is projected on the lower surface of a disc portion 17, and has a center hole 19. Further, three locking protrusions 20 are provided on the outer periphery of the cylindrical portion 18 so as to project at equal angular intervals. These protrusions 20 are separated from the lower surface of the disk portion 17 by the thickness of the chassis 21. On the other hand, the chassis 21 is provided with a mounting hole 22 through which the cylindrical portion 18 is inserted, and a recess 23 which is continuous with the mounting hole 22 and through which the locking projections 20 are inserted. Further, on the upper surface of the chassis 21, there are provided engagement protrusions 24 that engage with the engagement recesses 14.

Therefore, when mounting the head mount 7 on the chassis 21, after inserting the column portion 18 and the locking projection 20 into the mounting hole 22 and the recess 23, the head mount 7 is rotated by a predetermined angle. By simply engaging the engaging concave portion 14 with the engaging convex portion 24, it is possible to easily perform the operation. The shaft 26 of the impedance roller 25 is engaged with the center hole 19.

When mounting the magnetic head case 1 on the head mounting base 7, the dovetail groove 3 is elastically attached to the magnetic head case 1 with the bottom surface 2 of the magnetic head case 1 in contact with the head mounting surface 8 as shown in FIG. Mate to 9. At this time, the elastic locking piece 11 pushes the hook portion 13 against the bottom surface 2 of the magnetic head case 1 and bends downward. Further, the pair of elastic pieces 9 are in a state of being slightly elastically deformed as shown in FIG. When the magnetic head case 1 reaches a predetermined position, the elastic locking piece 11 elastically returns as shown in FIG. 4, the hook portion 13 engages with the lower front surface of the magnetic head case 1, and the dovetail groove 3 and the elastic piece. It comes to prevent it from coming off with 9.

[0012]

[Effect of the device]

 An elastic locking piece 11 is formed on the head mounting base 7, and the dovetail groove 3 and the elastic piece 9 can be engaged by elastic deformation of the elastic locking piece, and when the engagement between the dovetail groove 3 and the elastic piece 9 is completed. Since the elastic pieces are prevented from coming off by elastic return, there is no risk of the elastic pieces and the dovetails coming off even if the pressure contact force between the elastic piece and the inner surface of the dovetail groove is not strengthened. Therefore, the elastic pressure contact force between the two can be reduced to facilitate the assembling work, and a firm mounting state can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing a partial cross-section of a magnetic head case being attached.

FIG. 3 is a front view showing an assembled state.

FIG. 4 is a side view showing a part of the assembled state in section.

[Explanation of symbols]

 1 Magnetic head case 3 Dovetail groove 7 Head mount 9 Elastic piece 11 Elastic locking piece

Claims (1)

[Scope of utility model registration request] 1. A magnetic head case, wherein a dovetail groove is formed in the magnetic head case, a long elastic piece is formed in the head mounting base, and the dovetail groove and the elastic piece are elastically engaged with each other to attach the magnetic head case to the head mounting base. In the head mounting mechanism, an elastic locking piece is formed on the head mounting base, and elastic deformation of the elastic stop piece enables elastic engagement between the dovetail groove and the elastic piece. A magnetic head mounting mechanism, wherein when the elastic engagement with the piece is completed, the elastic locking piece elastically returns to engage with the magnetic head case to prevent the dovetail groove and the elastic piece from coming off.