JP4343651B2 - Structure of camera mounting unit - Google Patents

Description

  The present invention relates to a structure of a camera mounting unit for mounting an optical system unit such as a lens and a camera body using an inlay fitting method.

  The structure of a conventional camera mounting unit will be described with reference to FIGS. FIG. 8 is a front view showing the structure of a camera mounting unit as an example of the prior art, and FIG. 9 is a cross-sectional view showing the structure for fixing the camera to a holder in the camera mounting unit as an example of the prior art.

  In the conventional camera mounting unit, as shown in FIGS. 8 and 9, a mounting base 21, a V adjustment screw 22, a lock nut 23, an adjustment screw base 24, an inlay 25, a hexagon socket set screw (described in JIS B 1177) 26. The camera body 27, the holder 28, the spigot receptacle 29, and the camera front end portion 30 having an optical system unit such as a lens. In addition, regarding the V adjustment screw 22, the lock nut 23, the adjustment screw base 24, and the spigot receiver 30, the V adjustment screw 22a, the lock nut 23a, and the adjustment screw base 24a show the appearance of each component, whereas The adjustment screw 22b, the lock nut 23b, the adjustment screw base 24b, and the spigot receiver 30 show cross sections of the respective components.

In FIG. 8, the mounting base 21 is fixed to the camera body 27 with screws. The height of the camera body 27 is adjusted by moving the mounting base 21 up and down by turning the V adjustment screw 22. When the height is adjusted, the weight of the camera tip 30 is large (for example, the weight of the camera body 27: 4 kg, the importance of the camera tip 30 : 1 kg), and thus a load is applied to the fitting portion (the spigot 25 and the spigot receptacle 29). Adjustment is performed while holding the camera tip 30 by hand so as not to be applied. Further, the height adjustment is performed so that the camera tip 30 and the camera body 27 are adjusted to the height of the subject. After adjusting the height, the lock nut 23 is turned and tightened to the mounting base 21 and the inlay 25 is inserted into the hole of the inlay receiver 29. Then , as shown in FIG. Then, the tip 26 a of the hexagon socket set screw 26 is pressed into the V groove 25 a provided in the inlay 25. By this pressing, the camera is fixed to the holder 28.

As described above, in the conventional camera mounting unit, the V adjustment screw 22 is turned to match the height of the camera tip 30 and the camera body 27 with the height of the subject, and the inlay 25 is inserted into the hole of the inlay receiver 29 . Thereafter, the camera is fixed to the holder 28 by the procedure of pressing the tip 26a of the hexagon socket set screw 26 into the V groove 25a provided in the inlay 25.

As a patent document related to this patent application, when attaching an optical lens and an imaging device, a guide hole is provided for the bottom frame (bottom frame of the camera) to which the optical lens is fixed, and the imaging device is fixed. Japanese Unexamined Patent Application Publication No. 2002-229113 discloses a mechanism for attaching an optical lens and an imaging device by moving a guide pin by providing a guide pin that moves in the longitudinal direction of the guide hole.
JP 2002-229113 A

The structure of the conventional camera mounting unit described above has the following disadvantages (1) to (4).
(1) There is a disadvantage that it is troublesome because the operator has to hold the camera tip at the time of adjusting the height of the camera.

  (2) To adjust the height of the camera, the V adjustment screw is turned to adjust the height of the camera tip and the camera body to the height of the subject. This is difficult and requires a lot of time. There is a disadvantage that it takes.

(3) There is a drawback that the camera cannot be fixed to the holder without a tool (hexagon stick spanner).
(4) Once the camera is removed from the holder, there is a drawback that it is troublesome because the above-described height adjustment of the camera and the mounting of the inlay to the inlay receiver must be performed again.

  Therefore, in the present invention, the defects of the above (1) to (4) can be removed so that the camera can be easily fixed to the holder, that is, the camera body and the optical system unit such as a lens. It is an object of the present invention to make it possible to easily attach the front end of a camera having

Therefore, in the present invention, in order to achieve the above object, a structure that satisfies the following conditions (1) and (2) is provided.
(1) Even when the height of the camera body and the optical system unit does not match the height of the subject due to assembly errors and dimensional errors of each part, the height can be adjusted and attached.
(2) The load when attaching the camera body and the optical system unit can be reduced.

  In order to satisfy the above condition (1), a fixed portion (in this embodiment, a fixed base 4), a guide shaft fixed in the fixed portion (in this embodiment, a guide pin 1, and an upper and lower fixing screw 13), The moving table has a structure including a moving table (in this embodiment, a vertical moving table 8) having guide holes into which the guide shaft is inserted (in this embodiment, the guide hole 3a and the guide hole 3b). By moving together with the camera body and the optical system unit along the longitudinal direction of the guide hole, the height of the subject can be adjusted.

  In order to satisfy the condition (2), an elastic body (in this embodiment, a compression coil spring 15) that is sandwiched between the fixed portion and the moving table and expands and contracts in accordance with the movement of the moving table is provided on the front and rear sides. In addition, when the front and rear elastic bodies are contracted by the weight of the optical system unit, the moving base moves so that the guide shaft is balanced with the center of the guide hole at the position.

  In addition, the guide shaft is provided at the front and rear of the fixed portion, and the guide hole is provided at the front and rear of the moving base, and the longitudinal dimension of the rear guide hole is larger than the longitudinal dimension of the front guide hole. Thus, the tilt adjustment can be performed even if the camera body and the optical system unit are tilted due to an assembly error or a dimensional error of each component.

  Furthermore, after attaching the camera body and the optical system unit, a stopper (up and down fixing screw 13 in this embodiment) that presses the moving table against the fixed table is provided, so that there is no need for a tool (for example, a hexagonal bar spanner 31). The camera body and an optical system unit such as a lens can be easily attached.

  As described above, according to the present invention, according to the following (1) to (4), a camera can be easily fixed to a holder, that is, a camera having a camera body and an optical system unit such as a lens. Since the tip portion can be easily attached, a camera attachment unit with extremely good operability can be provided.

(1) Since the operator does not need to adjust the camera height while holding the camera tip, the camera can be easily fixed to the holder.
(2) When the front and rear elastic bodies shrink due to the weight of the camera body and the optical system unit, the moving base moves so that the guide shaft is balanced at the center of the guide hole, so that the camera can be easily fixed to the holder. It can be carried out.

  (3) After inserting the camera spigot into the spigot holder fixed to the holder, the camera can be fixed to the holder without a tool by pressing the moving base with a fixing screw.

  (4) Even if the camera is removed from the holder, the camera can be fixed to the holder again without adjustment unless it is moved in the depth direction.

  Hereinafter, the structure of a camera mounting unit according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view (sectional view) showing the structure of a camera mounting unit according to an embodiment of the present invention. FIG. 2 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 3) showing the moving mechanism of the vertical movement table of the camera mounting unit according to the embodiment of the present invention. FIG. 3 is a front view showing an appearance of a camera mounting unit according to an embodiment of the present invention. FIG. 4 is a cross-sectional view (a cross-sectional view taken along the line BB in FIG. 3) showing the moving mechanism of the vertical moving table of the camera mounting unit according to the embodiment of the present invention. FIG. 5 is a plan view showing the structure of the slide pack of the camera mounting unit according to the embodiment of the present invention. FIG. 6 is a side view showing the structure of the slide pack of the camera mounting unit according to the embodiment of the present invention. FIG. 7 is an enlarged view (part A enlarged view of FIG. 1) showing a moving mechanism of the depth moving base of the camera mounting unit according to the embodiment of the present invention.

1-4, the camera mounting unit of this embodiment includes a guide pin 1, a roller 2, a vertical movement table 3, a fixed base 4, a front and rear movement table 5, a slide pack 6, a tension boss 7, a guide pin 8, It comprises a camera mounting bracket 9, a depth moving base 10, a lock nut 11, a fixing screw 12, an upper and lower fixing screw 13, a fixing leaf spring 14, and a compression coil spring 15. Furthermore, by having the mechanisms described in the following (1) to (3), the up-and-down moving table 3, the front-and-rear moving table 5, and the depth moving table 10 together with the camera body 27 are respectively up and down, front and rear, and depth. It is possible to move in the direction (the depth direction is the front-to-back direction or the back-to-front direction in FIG. 1). By this movement, after inserting the camera inlay 25 into the inlay receiver 29 of the holder 28, the depth moving table 10 and the vertical moving table 3 are pressed and fixed by tightening the fixing screw 12 and the vertical fixing screw 13, respectively. Thus, the camera can be fixed to the holder. As a result, the camera can be fixed to the holder without using a tool.

Hereinafter, mechanisms for moving the vertical movement table 3, the vertical movement table 5, and the depth movement table 10 together with the camera body 27 in the vertical direction, the front-rear direction, and the depth direction will be described.
(1) Mechanism for moving up and down The camera mounting unit of this embodiment has a mechanism for moving the camera up and down forward and backward as shown in FIG. First, the vertical movement mechanism of the front part of the camera mounting unit and the vertical movement mechanism of the rear part of the camera mounting unit will be described.

(A) Vertical movement mechanism of the front part of the camera mounting unit As shown in FIGS. 2 and 3, the guide pin 1 is inserted into the guide hole 3 a provided in the vertical movement table 3 and attached to the fixed base 4. The vertical movement table 3 can be moved in the vertical direction by the guide hole 3a. A roller 2 is attached around the shaft of the guide pin 1 in order to reduce the load when moving the vertical movement table 3. Here, if the longitudinal dimension of the guide hole 3a is A and the outer diameter dimension of the roller 2 is B, the amount of movement in front of the up-and-down moving base 3 is AB.

(B) Vertical movement mechanism of the rear part of the camera mounting unit As shown in FIGS. 3 and 4, the vertical fixing screw 13 is inserted into the guide plate 14a and the guide hole 3b respectively provided in the fixing plate spring 14 and the vertical movement table 3. In addition, the vertical base 3 is fixed to the fixed base 4 by tightening the fixed base 4. When the vertical movement table 3 is moved up and down together with the camera, the vertical fixing screw 13 is inserted into the guide hole 14a and the guide hole 3b, but is not tightened to the fixed base 4. The vertical movement table 3 can be moved in the vertical direction by the guide holes 14a and 3b. Here, when the longitudinal dimension of the guide hole 14a and the guide hole 3b is C and the outer diameter dimension of the screw portion of the vertical fixing screw 13 is D, the movement amount behind the vertical moving table 3 is CD. .

(C) Features by having a vertical movement mechanism As shown in FIG. 3, the guide hole 3 a provided in front of the vertical movement table 3 has a long hole shape in order to increase the vertical gap with the guide pin 1. have. Similarly, the guide hole 3b provided at the rear of the up-and-down moving table 3 has a long hole shape in order to increase the vertical gap with the up-and-down fixing screw 13. Since the guide hole 3a and the guide hole 3b have the shape of a long hole, the vertical assembly error of the camera mounting target such as a lens and the vertical machining error of the component parts can be absorbed. ing. In other words, due to assembly errors and dimensional errors, even if the height of the camera tip and the camera body do not match the height of the subject, adjustment can be made by moving the vertical movement table 3 in the vertical direction. . That is, the camera can be adjusted so that it can be attached to the holder.

  Further, by making the vertical dimension of the guide hole different between the front and the rear, that is, as shown in FIG. 3, the vertical dimension of the guide hole is greater in the rear guide hole 3b than in the front guide hole 3a. By making it large, the vertical movement table 3 can be rotated not only in the vertical direction but also in the θ direction (described in FIG. 3). Since the up-and-down moving base 3 can be rotated in the θ direction, the camera mounting unit can be absorbed even when the camera mounting unit is inclined in the θ direction due to an assembly error of a camera mounting object such as a lens or a processing error of a component. is doing. That is, even if the camera is tilted due to the tilt of the vertical movement table 3, the vertical movement table 3 can be rotated in the θ direction, so that the tilt of the camera can be adjusted and attached to the holder.

(D) Features by having a compression coil spring When the camera is mounted on the holder, the camera mounting unit is moved up and down with the camera mounted and rotated in the θ direction (described in FIG. 1). A compression coil spring 15 is used to enable smooth operation. The compression coil springs 15 are attached to the front and rear of the camera mounting unit as shown in FIG. 1, and when the camera is mounted, the guide pins 1 and the vertical fixing screws 13 have corresponding guide holes in the height direction. 3a and the center of the guide hole 3b. When the guide pin 1 and the vertical fixing screw 13 are at the center of the corresponding guide hole, the load when moving is reduced by being in a balanced state (the resultant force in the vertical direction is 0). Can easily move the camera to the holder.

(2) Mechanism for moving in the front-rear direction As shown in FIG. 1, the camera mounting unit of this embodiment is a front-rear moving base 5 that moves in the front-rear direction along a slide pack 6 that is attached to the upper surface of the vertical moving base 3. Is provided, the front / rear moving table 5 can be moved in the front / rear direction together with the mounted camera.

  As shown in FIGS. 5 and 6, the slide pack 6 includes a base portion 6 a and a plurality of balls 6 b arranged inside the side surface of the base portion 6 a. With the configuration of the slide pack 6, the back-and-forth moving base 5 is in rolling contact with the plurality of balls 6b arranged, so that it can be smoothly moved in the back-and-forth direction.

(3) Mechanism for moving in the depth direction As shown in FIG. 1, the camera mounting unit of the present embodiment has a depth moving table 10 attached to a front / rear moving table 5 by guide pins 8. As shown in FIG. 7, a tension boss 7 that is in point contact with the back-and-forth moving table 7 is attached. The tension boss 7 is also attached to the front / rear moving table 7 and makes point contact with the depth moving table 10. The depth moving table 10 has a guide hole on the upper surface, and the guide hole has a long hole shape so that a gap in the depth direction with the guide pin 8 is increased. Therefore, if the guide pin 8 is not tightened, the depth moving table 10 can be moved in the depth direction together with the mounted camera. In addition, since the tension boss 7 is in point contact with the depth moving table, the friction resistance during movement can be suppressed as much as compared with the surface contact, so that the depth moving table 10 can be smoothly moved in the depth direction. Can be moved.

  Furthermore, by making the depth direction dimension of the guide hole different between the front and rear, that is, the depth direction dimension of the guide hole is larger in the rear guide hole than in the front guide hole, In addition to moving the depth moving table 10 in the depth direction, the direction can be changed. Since the direction of the depth moving table 10 can be changed, it is possible to absorb even if the direction of the camera mounting unit is shifted due to an assembly error of a camera mounting object such as a lens or a processing error of a component. That is, even if the orientation of the depth moving table 10 is deviated, the direction of the depth moving table 10 can be changed even if the direction of the camera is deviated, so that the direction of the camera can be adjusted and attached to the holder.

(4) Summary As described above, the camera mounting unit according to the present embodiment has a height of the subject and the height of the camera front end and the camera body due to assembly errors of camera mounting objects such as lenses and processing errors of components. Even if it is displaced, the height can be adjusted and attached to the holder. Furthermore, even if the camera tip and the camera body are tilted, the tilt can be adjusted and attached to the holder.

1 is a front view (sectional view) showing a structure of a camera mounting unit according to an embodiment of the present invention. Sectional drawing (AA sectional drawing of FIG. 3) which shows the moving mechanism of the vertical movement stand of the camera attachment unit which is one Example of this invention. The front view which shows the external appearance of the camera attachment unit which is one Example of this invention. Sectional drawing (BB sectional drawing of FIG. 3) which shows the moving mechanism of the vertical movement stand of the camera attachment unit which is one Example of this invention. The top view which shows the structure of the slide pack of the camera attachment unit which is one Example of this invention. The side view which shows the structure of the slide pack of the camera attachment unit which is one Example of this invention. FIG. 2 is an enlarged view showing the moving mechanism of the depth moving table of the camera mounting unit according to the embodiment of the present invention (an enlarged view of a portion in FIG. 1). The front view which shows the structure of the camera attachment unit which is an example of the past. Sectional drawing which shows the structure for fixing a camera to a holder in the camera attachment unit which is a conventional example.

Explanation of symbols

1: Guide pin 2: Roller 3: Vertical movement table 3a: Guide hole 3b: Guide hole 4: Fixed base 5: Front / rear movement table 6: Slide pack 6a: Base part 6b: Ball 7: Tension boss 8: Guide pin 9: Camera mounting bracket 10: Depth moving table 10a: Guide hole 10b: Guide hole 11: Lock nut 12: Fixing screw 13: Vertical fixing screw 14: Fixing leaf spring 14a: Guide hole 15: Compression coil spring 21: Mounting base 22: V Adjustment screw 22a: V adjustment screw (external view) 22b: V adjustment screw (cross section)
23: Lock nut 23a: Lock nut (external view)
23b: Lock nut (cross section) 24: Adjustment screw base 24a: Adjustment screw base (outside view) 24b: Adjustment screw base (cross section)
25: Inlay 25a: V groove 26: Hexagon socket set screw 26a: Tip 27: Camera body 28: Holder 29: Inlay holder 30: Camera tip 31: Hexagon wrench

Claims (1)

In the structure of the camera mounting unit that attaches the camera to the holder using the inlay fitting method,
A fixed part, a guide shaft provided at both the front and rear of the fixed part, a movable base having a guide hole having a long hole in the vertical direction into which the guide shaft provided at both the front and rear is inserted, and the fixed part And an elastic body that is sandwiched between the movable tables and expands and contracts in the vertical direction according to the movement of the movable table, and is provided in front of and behind the fixed portion, and the camera is mounted on the movable table . After mounting, it has a fixing screw that presses the movable table against the fixed part,
The height of the camera is adjusted by moving the moving table together with the camera along the longitudinal direction of the guide hole provided at the front and rear of the fixed part,
When the front and rear elastic bodies are contracted by the weight of the camera, the moving base moves so that the guide shafts provided at the front and rear are located at the centers of the guide holes provided at the front and rear,
When the longitudinal dimension of the rear guide hole is larger than the longitudinal dimension of the front guide hole, the tilt adjustment of the camera is performed.
A structure of a camera mounting unit, wherein, after the camera is attached to the holder by an inlay fitting method, the camera is fixed by pressing the moving table against the fixing portion with the fixing screw.

Images