JPH0644542A - Posture of mounted parts and position adjusting device - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the number of parts is small, low cost is obtained without impairing the position and orientation adjustment performance. [Structure] A head base 51 is arranged on a main body base 50 substantially in parallel. The head base 51 has screws A1 and A2.
Has a through hole through which the springs 52a to 5 are inserted.
It is pushed so as to float from the main body base 50 by 2c, but is regulated by the screws A1 to A3. Here, the through hole of the screw A1 is a round hole, and the through holes of the screws A2 and A3 are elongated holes, so that the head base 51 can be rotated with the screw A1 as a fulcrum. The tilt, azimuth, and height can be adjusted by rotating the screws A1 to A3. Further, the X position adjustment is performed by opening the opening 51 in the head base 51.
This is possible by a structure in which D is formed, an eccentric post 61 having a tightening shaft is inserted in the eccentric position, and the body base 50 is erected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a posture and position adjusting device for a mounted component effective for positioning a fixed magnetic head such as a video tape recorder (hereinafter referred to as VTR).

[0002]

2. Description of the Related Art In addition to a rotary head, a VTR is provided with a fixed head device for giving a voice signal, a control signal, and an erase signal to a magnetic tape. The fixed head device is adjusted in posture and position so that the posture and position of the fixed head device fall within a range defined by the standard.

FIG. 4 shows a fixed head device supported by a conventional attitude and position adjusting device. The fixed head requires four kinds of adjustments with respect to the running direction of the magnetic tape: running direction angle (azimuth), thickness direction angle (tilt), width direction height (height), and tape longitudinal direction position (X position). is there. It is possible to obtain better assembling accuracy when these adjustments can be made independently.

In FIG. 2, a post 11 with a height adjusting screw is erected on the main body base 10. For the post 11 with height adjusting screw, the main base energizing coil 1
The main base 13 is mounted horizontally so as to compress 2, and the vertical movement of the main base 13 can be adjusted by rotating the adjusting nut 14. In addition, a taper nut 1 for adjusting the X position is provided at the turning tip of the main base 13.
5 works. The taper nut 15 is used for the main body base 10.
It is erected and is engaged with the screw-shaped post 16. When the taper nut 15 is rotated and moved up and down, the tip portion of the main base 13 is moved in the rotation direction by the taper portion, so that the X position can be adjusted.

The fixed head 20 is mounted on the main base 13 via a head base 21. The head base 21 is provided with a hole in the lower portion of the fixed head 20, and the tip of the cone pin 17 fixed to the main base 13 is engaged with the hole. Therefore, the head base 21
Can change its posture with the conical pin 17 as a fulcrum. A plurality of screws 31, 32, 33 act between the head base 21 and the main base 13. The screw 31 penetrates a hole provided in the head base 21, and the tip thereof is engaged with the screw hole of the main base 13.
A coil spring 34 is arranged between the head of the screw 31 and the head base, and the head base 21 is connected to the main base 1.
It is pushing to the 3 side. The screw 32 is located at a position where the conical pin 17 is sandwiched with respect to the screw 31, and the head base 2
The front end is engaged with the screw hole of the main base 13 through the first hole. Accordingly, when the degree of tightening the screw 32 is adjusted, the azimuth angle of the fixed head 20 is adjusted. The screw 33 is arranged at a position forming a triangle with the screws 31 and 32, and the tip thereof is abutted against the main base 13 through the screw hole of the head base 21. Accordingly, when the screw 31 is rotated, the floating condition of the rear portion of the head base 21 can be controlled, and as a result, the head base 21 can be controlled.
The tilt of the fixed head 20 standing upright can be adjusted.

[0006]

According to the above-described conventional attitude and position adjusting device for the fixed head, the number of parts is large and two bases, the main base 13 and the head base 21, are required. For this reason, the number of assembling steps increases, which is a factor of cost increase.

Therefore, an object of the present invention is to provide a posture and position adjusting device which can obtain a low cost without deteriorating the position and posture adjusting performance even if the number of parts is small.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there are provided a head base disposed substantially parallel to a main body base, and first and first head bases formed so as to be respectively located on vertexes of a substantially triangular shape. The second and third through holes are round holes so that the first through hole functions as a fulcrum portion, and the second and third through holes are centered on the first through hole, respectively. A group of through holes that are elongated holes along a circle, and first, second, and third screw holes formed in the main body base corresponding to the first, second, and third through holes, respectively. Group of screw holes, a repulsion spring acting to push up the head base from the main body base, and a tip end portion for compressing the repulsion spring via the first, second, and third through holes, respectively. Is attached to the first, second, and third screw holes. A thread group consisting of second and third screws, a mounting component provided upright on the head base between the second and third through holes, and the first and second through holes. And an opening formed in the head base in an elongated shape between the first and third through holes and a hole at an eccentric position which is inserted into the opening and has a screw on the main body base. An eccentric post attached to the hole by a tightening screw.

[0009]

With the above means, the height can be adjusted by adjusting the first to third screws with respect to one head base.
The tilt and azimuth can be adjusted, and the rotational position of the head base can be adjusted through the opening by adjusting the rotation angle of the eccentric post, and the X position can be adjusted.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. A head base 51 is arranged substantially parallel to the main body base 50. First, second, and third through holes 51a, 51b, and 51c are formed in the head base 51 so as to be respectively located on the apex sides of the substantially triangular shape. The first through hole 51a is a round hole so as to function as a fulcrum portion, and the second and third through holes 51b and 51c are elongated holes elongated along a circle with the first through hole 51a as a fulcrum. is there.
The main body base 10 has first, second, and third holes corresponding to the first, second, and third through holes 51a, 51b, and 51c, respectively.
Screw holes 10a, 10b, 10c are formed. The first, second, and third repulsion springs 52 are respectively provided between the first, second, and third through holes 51a, 51b, 51c and the first, second, and third screw holes 10a, 10b, 10c.
a, 52b, 52c are arranged. The first, second, and third screws A1, A2, and A3 are the first, second, and third screws.
Through the through-holes 51a, 51b, 51c, the first, second, and third repulsion springs 52a, 52b, 52c so as to be compressed, and the tip ends of the first, second, and third screw holes 10.
a, 10b, 10c.

Next, on the head base 51, a fixed head 60 is provided upright as a mounting component between the second and third through holes 52b and 52c. Further, an elongated opening 51D is formed in the head base 51 between the first and third through holes 51a and 51c. An eccentric post 61 having a hole at an eccentric position is provided in the opening 51D, and the eccentric post 61 has a screw 6 penetrating the hole.
2 is attached to the main body base 50.

According to the head posture and position adjusting device constructed as described above, the height, azimuth and tilt can be adjusted by adjusting the screws A1 to A3.
Next, when adjusting the X position, the screw 62 is slightly loosened and the rotation angle of the eccentric post 61 is adjusted, so that the head base 51 rotates about the screw A1. After adjusting all the screws, an adhesive secures each screw in its position. Compared to the conventional device, the base is one, and the number of parts is extremely small, and the cost can be reduced.

The above description has been made on the posture and position adjusting device of the fixed head in the VTR, but the present invention is not limited to this, and can be used as the posture and position adjusting device in various devices.

2 and 3 are other embodiments of the present invention. The embodiment shown in FIG. 2 has a repulsion spring 52a.
In this example, a large coil-shaped repulsion spring 52 is arranged in the lower center of the head base 51 and is attached to a positioning pin 70 provided on the main body base 50, instead of to 52c. Further, the embodiment of FIG. 3 is an example using a plate-shaped repulsion spring 52, and the center of the spring is the head base 51.
It is located at the center of the lower side and is attached to a positioning pin 70 provided on the main body base 50. The repulsion spring 52 has an arm portion extending toward the screws A1 to A3 and pushing up the head base 51. Also in these embodiments, the same effect as that of the embodiment of FIG. 1 can be obtained. In addition, the number of parts is further reduced, and the assembling work is easy.

[0016]

As described above, according to the present invention,
Even if the number of parts is small, low cost can be obtained without impairing the position and orientation adjustment performance.

[Brief description of drawings]

FIG. 1 is a perspective view and a plan view showing an embodiment of the present invention.

FIG. 2 is a perspective view and a plan view showing another embodiment of the present invention.

FIG. 3 is a perspective view and a plan view showing still another embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional posture and position adjusting device.

[Explanation of symbols]

50 ... Main body base, 51 ... Head base, 51a to 51
c ... through hole, 52a to 52c ... repulsion spring, 10a
-10c ... screw hole, A1-A3 ... screw, 51D ... opening, 61 ... eccentric post, 62 ... screw.

Claims (1)

[Claims] 1. A head base disposed substantially parallel to a main body base, and first, second, and third through holes formed so as to be respectively located on the apex sides of a substantially triangular shape on the head base. The first through hole is a round hole so as to function as a fulcrum portion, and the second and third through holes are elongated slots along a circle centered on the first through hole, respectively. And a threaded hole group formed of the first, second, and third threaded holes formed in the main body base corresponding to the first, second, and third through holes, respectively, A repulsion spring that acts to push up the head base from the main body base, and a tip end portion that compresses the repulsion spring via the first, second, and third through holes, respectively, and has the first and second tip portions. From the 1st, 2nd and 3rd screws that are engaged in the 3rd screw hole Screw group, a mounting component provided upright on the head base between the second and third through holes, and between the first and second through holes or the first and second through holes. Three
An elongated opening formed in the head base between the through hole and a through hole, and an eccentric post which is inserted into the head base and has a hole at an eccentric position and which is attached to a screw hole of the main body base by a tightening screw. An attitude and position adjusting device comprising: