JPH09193031A - Adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adjusting device by which the number of part items necessary for an adjustment can be reduced and which can dispense with a complicated work process. SOLUTION: An attachment where a small diameter part (a bar-shaped projecting part 1b) is eccentrically arranged in a large diameter part (a disk-shaped head part 1a), is constituted on the tip of a general purpose driver so as to be freely mountable-demountable, and this is inserted into a hole on the adjusting device side, and an adjusting object is rotated, and adjusting work is performed, and after the adjusting work finishes, this attachment is removed from the driver, and this is housed in a part of a device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting device used for adjusting an optical axis of a camera, for example.

[0002]

2. Description of the Related Art Conventionally, in a device including a plurality of members, when it is necessary to move or displace some members relative to other members, various methods have been proposed for this mechanism. ing. For example, as an optical axis adjusting mechanism for adjusting the optical axis of the surveillance camera to the target object, there are one using an eccentric pin, one using a screw feed, etc. Although it is a little difficult, it is widely used because of its simple mechanism and small space requirement. 6, 7, and 8
FIG. 8 is a diagram showing a conventional adjustment method when adjusting the optical axis of a surveillance camera. In the figure, 4 is a camera, 3 is a camera-side bracket that is attached to the camera 4, 5 is a ceiling-side bracket that is attached to the ceiling, and 6 is a rivet for unifying the two brackets in a rotatable state.
Used. 7 is an eccentric pin, as shown in FIG.
A leg portion 7b having an outer diameter F is attached to a head portion 7a having an outer diameter E with an eccentricity of G. The head portion 7a is provided with a cross groove 7c so that the head portion 7a can be rotated by a driver.
8 is a fixing screw for fixing both brackets after the adjustment is completed. Further, the camera side bracket 3 has an eccentric pin 7
A round hole 3b into which the leg portion 7b can be inserted and a female screw to be screwed with the fixing screw 8 are provided. Further, the ceiling side bracket 5 is provided with an elongated hole 5a into which the head portion 7a of the eccentric pin 7 can be inserted. The short diameter of the long hole 5a is slightly larger than the outer diameter E of the head portion 7a of the eccentric pin 7, and the long diameter is slightly larger than E + 2G. Furthermore, the ceiling side bracket 5
An arcuate hole through which the fixing screw 8 can pass is opened. Then, the leg portion 7b of the eccentric pin 7 is fitted in the round hole 3b of the camera side bracket 3, and the head portion 7a is fitted in the elongated hole 5a of the ceiling side bracket 5. Reference numeral 9 is a push nut for preventing the eccentric pin 7 from falling off.

The optical axis adjusting mechanism of the conventional camera is constructed as described above, and the side surface of the head portion 7a of the eccentric pin 7 is ceilinged by mounting a screwdriver in the cross groove 7c of the eccentric pin 7 and rotating the same. The side surface of the elongated hole 5a of the side bracket 5 is pushed, and the ceiling side bracket 5 is displaced with respect to the camera side bracket 3 around the rivet 6. FIG. 8 is a diagram for explaining the state of displacement. Figure 8-a is neutral, i.e.
When the eccentric direction of the eccentric pin 7 is in the direction of the rivet 6 which is the center of rotation, FIG. 8B shows the case where the eccentric pin 7 is rotated 90 ° to the right from the state of FIG. The bracket 3 rotates leftward with respect to the rivet 6 by an angle H. FIG. 8-C shows a case where the camera-side bracket 3 is rotated 90 ° leftward from the state of FIG. 8-A, and the camera side bracket 3 is rotated rightward with respect to the rivet 6 by an angle H. The displacement amount in this case is twice the maximum G, and the displacement angle is maximum 2 when the distance between the rivet 6 and the round hole 3b of the camera side bracket 3 is D.
It becomes tan ^-1 (G / D). In this way, the optical axis of the camera can be adjusted. Although the adjustment in only one direction has been described here, in general, adjustment may be necessary in other directions as well, and one device has a plurality of adjustment points. As a result, the same number of eccentric pins 7 as the adjustment points are required. Also, a method of using a dedicated tool 10 as shown in FIG. 9 has been proposed. The tip portion of the dedicated tool 10 is formed of a large diameter portion 10a and a small diameter portion 10b that is eccentric to the large diameter portion 10a.
By inserting b into the round hole 3b of the camera-side bracket 3 and inserting the large-diameter portion 10a into the elongated hole 5a of the ceiling-side bracket 5 and rotating it, it is possible to make adjustments in the same way as when using the eccentric pin 7. it can.

[0004]

Since the conventional adjusting mechanism is constructed as described above, the same number of eccentric pins 7 as the adjusting points are required for adjusting one device. Since the head portion 7a and the leg portions 7b are eccentric as shown by 7, there is a problem that the machining is complicated and the cost is high. Further, also at the time of assembly, a step of press-fitting the push-out prevention nut 9 into the leg portion 7b of the eccentric pin 7 is required. Further, in the method using the dedicated tool 10, the processing of the dedicated tool 10 is as complicated and costly as the eccentric pin 7, and if it is lost, adjustment becomes impossible.

The present invention has been made to solve the above problems, and an object thereof is to provide an adjusting device which reduces the number of parts required for adjustment and does not require a complicated processing step. To do.

[0006]

SUMMARY OF THE INVENTION An adjusting device according to the present invention is a disk-shaped head, a bar-shaped projection portion eccentrically provided on the disk-shaped head, and an opposite side of the disk-shaped head. An attachment having a hole into which a general-purpose driver formed in can be inserted and a cross groove provided at the bottom of the hole is provided, and the attachment is attached to the tip of the general-purpose driver,
The disk-shaped head and the rod-shaped projection of the attachment are engaged with the hole of the device to be rotationally adjusted for rotational adjustment. Further, the device to be adjusted, a first member having a round hole having a diameter slightly larger than the rod-shaped projection of the attachment, and a second member having a long hole having a minor axis slightly larger than the disk-shaped head, It is rotatably supported at a point equidistant from the round hole and the long hole, the rod-shaped protrusion of the attachment is inserted into the round hole of the first member, and the disk-shaped head of the attachment is changed to the long hole of the second member. The relative positions of the first member and the second member can be adjusted by fitting and rotating the general-purpose driver. Further, the major axis of the elongated hole of the first member is formed to be slightly larger than the dimension obtained by adding the diameter of the disk-shaped head to twice the eccentric amount of the disk-shaped head and the rod-shaped projection. Furthermore, the general-purpose driver insertion hole of the attachment is slotted so that the general-purpose driver can be attached and detached. In addition, an elastic body or a permanent magnet is mounted in the general-purpose driver insertion hole of the attachment so that the general-purpose driver can be attached and detached. Further, as the cross groove of the hole of the attachment, the cross groove of the head of the general-purpose child screw attached to the bottom of the hole is used. Further, the attachment is configured to be removed from the general-purpose driver and stored in the device to be adjusted after the adjustment work is completed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, an adjusting device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing an attachment part of an adjusting device of the present invention, and FIG. 2 is a view showing a state in which the attachment is attached to a general-purpose driver. In the figure, 1 is an attachment and 2 is a general-purpose driver. Reference numeral 1a is a disk-shaped head having an outer diameter A, and 1b is a bar-shaped projection having an outer diameter B, which is eccentrically arranged on the disk-shaped head 1a by C, and is integrated with the disk-shaped head 1a because eccentric processing is unnecessary. Instead, it is formed by press-fitting parallel pins. Reference numeral 1c is a hole for inserting the general-purpose driver 2 and has a diameter slightly larger than the outer diameter of the general-purpose driver 2. At the bottom of the hole 1c, a cross groove 1 for engaging with the tip of the general-purpose driver 2
d is provided. The cross groove 1d is formed by electric discharge machining. In addition, the slot 1 is provided on the wall of the hole 1c.
e is provided, and the hole 1c is slightly deformed by applying pressure in the direction of the arrow in the figure. Therefore, since the hole portion 1c is slightly deformed in the inner diameter direction, the attachment 1 does not drop from the general-purpose driver 2 due to friction of this portion, and can be handled integrally. The general-purpose driver 2 equipped with the attachment 1 inserts the rod-shaped protrusion 1b of the attachment 1 into the round hole 3b of the camera-side bracket 3 shown in the conventional example of FIG. 6 through the elongated hole 5a of the ceiling-side bracket 5, for example. By fitting and rotating the disk-shaped head 1a of the attachment 1 into the long hole 5a of the ceiling bracket 5, the eccentric pin 7 and the special tool 10 used in the conventional example are used in exactly the same manner as the camera. The relative position of the side bracket 3 and the ceiling side bracket 5 can be adjusted. When the adjustment is completed as described above, the attachment 1 is removed from the general-purpose driver 2 and only the attachment 1 is stored in a part of the device. For example, FIG. 3 shows a state in which the attachment 1 is stored in the camera-side bracket 3 of the conventional example, and 3a is an attachment holder attached to the camera-side bracket 3, which is made by bending a thin steel plate. It is preferable that the attachment holder 3a is attached to a place that is as inconspicuous as possible in terms of appearance.

According to the invention, the attachment 1 is
Since the rod-shaped protrusion 1b is press-fitted into the disk-shaped head 1a, complicated processing steps are not required. Further, only one attachment 1 is required for a plurality of adjustment points, and a component for preventing the eccentric pin from falling out such as a push nut is not required, so that the number of components can be reduced. Further, since the attachment 1 has a structure for preventing the attachment 1 from falling off from the general-purpose driver 2, workability can be improved. Further, since the attachment 1 is stored in the main body of the apparatus, the unadjustable state due to loss or the like does not occur.

Embodiment 2 In the first embodiment, the attachment 1 detachment prevention structure from the general-purpose driver 2 has the slot 1e on the wall of the hole 1c of the attachment 1.
The hole 1c is deformed by pressurizing the hole 1c. However, as shown in FIG. 4A, an elastic body 1f such as rubber or FIG.
The same effect can be obtained by mounting the permanent magnet 1g in the hole 1c as shown in FIG. In addition, in order to eliminate the troublesome eccentric processing, the rod-shaped projection 1b is formed by pressing the parallel pin as in the first embodiment, but it may be integrally formed as shown in FIG. 4B. According to the present embodiment, the attachment 1 can be prevented from falling off the general-purpose driver 2, so that workability can be improved.

Embodiment 3 In the first embodiment, the cross groove 1d for engaging the attachment 1 and the general-purpose driver 2 is formed by electric discharge machining. However, as shown in FIG. 5, a general-purpose machine screw 1h having a cross groove on the head is formed. Even if it is formed by screwing and fixing, the same effect can be obtained. According to the present embodiment, the electric discharge machining for forming the cross groove 1d is unnecessary, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing an attachment of an adjusting device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a driver is mounted on the attachment of the adjusting device according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which the attachment of the adjusting device according to the first embodiment of the present invention is stored in a part of the device.

FIG. 4 is a sectional view showing an attachment of an adjusting device according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing an attachment of an adjusting device according to a third embodiment of the present invention.

FIG. 6 is a view showing a conventional adjusting device of this type.

FIG. 7 is a perspective view showing an eccentric pin used in a conventional adjusting device.

FIG. 8 is a diagram illustrating a conventional adjustment mechanism using an eccentric pin.

FIG. 9 is a perspective view showing a dedicated tool of another conventional adjusting device.

[Explanation of symbols]

1 Attachment, 1a Disk-shaped head, 1b Rod-shaped protrusion, 1c General-purpose driver insertion hole, 1d Cross groove, 1
e Slotting groove, 1f Elastic body, 1g Permanent magnet, 1h
General purpose machine screws, 2 general purpose drivers, 3 camera side bracket, 3a attachment holder, 3b round hole,
4 camera, 5 ceiling bracket, 5a slot, 6
Rivets, 7 eccentric pins, 7a head, 7b legs,
7c cross groove, 8 fixing screw, 9 push nut, 1
0 Dedicated tool, 10a large diameter part, 10b small diameter part, A
Diameter of disk-shaped head 1a, diameter of B-shaped protrusion 1b, C
Eccentricity between disk-shaped head 1a and rod-shaped projection 1b, distance between D rivet 6 and round hole 3b, E diameter of head 7a, F
Diameter of leg 7b, G Displacement between head 7a and leg 7b, H Maximum displacement angle.

Claims (7)

[Claims] 1. A disc-shaped head, a rod-shaped projection portion eccentrically provided on the disc-shaped head, and a general-purpose driver formed on the opposite side of the disc-shaped head from the rod-shaped projection portion can be inserted. A disk-shaped head of the attachment is provided with an attachment having a hole and a cross groove provided at the bottom of the hole, and the attachment is attached to the tip of a general-purpose driver and the hole of the device to be adjusted for rotation is attached to the hole. An adjusting device characterized in that rotation adjustment is performed by engaging with a rod-shaped protrusion. 2. The adjusted device comprises a first member having a round hole having a diameter slightly larger than that of a rod-shaped protrusion of the attachment,
A second member having an elongated hole whose minor axis is slightly larger than the disk-shaped head is rotatably supported at one point equidistant from the round hole and the elongated hole, and the rod-shaped protrusion of the attachment is described above. Insert into the round hole of the first member, fit the disk-shaped head of the attachment into the long hole of the second member, and rotate the general-purpose screwdriver to move the relative position of the first member and the second member. The adjusting device according to claim 1, wherein the adjusting device is configured to adjust a position. 3. The major axis of the elongated hole of the first member is slightly larger than the dimension obtained by adding the diameter of the disk-shaped head to twice the eccentric amount of the disk-shaped head and the rod-shaped projection. The adjusting device according to claim 2. 4. The adjusting device according to claim 1, wherein the general-purpose driver insertion hole portion of the attachment is slotted so that the general-purpose driver can be attached and detached. 5. The adjustment according to claim 1, wherein an elastic body or a permanent magnet is mounted in the general-purpose driver insertion hole of the attachment so that the general-purpose driver can be attached and detached. apparatus. 6. The cross groove of the hole of the attachment is a cross groove of the head of a general-purpose child screw attached to the bottom of the hole. Adjustment device. 7. The adjusting device according to claim 1, wherein the attachment is configured to be removed from a general-purpose driver and stored in the device to be adjusted after the adjustment work is completed. .