JP2018005205A - Lens holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera holder which can strongly support a heavy lens barrel without moving the barrel and also can attain a secure support by moving a column support as well if the lens barrel has moved, and can be used without bringing a lens support arm and a horizontal slide arm into contacting with the camera if the position of the camera has been laterally shifted by changing a lateral photographic style by the camera to a vertical photographic style.SOLUTION: A lens holder 10 includes: a holder body 1; a horizontal slide arm 3; a lens supporting arm 2; a stepped column support 4; an arm fixing mechanism formed of a finger grip 5; an arm fixing mechanism formed of a finger grip 6; and a finger grip 7 for fixing a camera. Since the lens support arm 2 can support the lens in a substantially perpendicular direction, the stepped column support 4 can support the lens barrel without fail.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lens holder capable of supporting an interchangeable lens such as a telephoto lens and a zoom lens mounted on a camera.

When a camera equipped with an interchangeable lens such as a telephoto lens is set on a tripod for photographing, if the weight of the interchangeable lens portion is large, a lens holder that receives lens weight and prevents lens shake is required.
FIG. 7 is a diagram showing a configuration of a camera balancer (lens holder) proposed by the present applicant (Patent Document 1).
The motive for proposing this camera balancer was made to solve the problems of Patent Documents 2 and 3. In other words, the former is small and lightweight, but it cannot be handled with a heavy lens, and the latter is limited in holding a telephoto lens of any shape, so it can be used for mounting on a camera platform, telephoto lens, and camera body. It took time and effort.

This camera balancer supports the lens barrel and the camera body at the same time, and can handle the length of the lens barrel even when it is long, it is light in weight, is not bulky to carry, and is very easy to attach and detach on a tripod. The problems of Patent Documents 2 and 3 are solved by reliably preventing lens shake.
In FIG. 7, the camera balancer 110 includes a frame 101, arms 106a and 106b, cylindrical supports 107a and 107b, and lock levers 105a and 105b. The cylindrical support 107a can support the camera body, and the cylindrical support 107b can support the lens barrel at the same time. In the frame 101, flanges 103a and 103b are formed in the vertical direction at both ends of the holder portion 116 for supporting the camera body or the lens.

The shapes of the flanges 103a and 103b are rectangular, and long holes 104a and 104b are formed in the center.
In FIG. 7B, the arms 106a and 106b have a rectangular shape, and lock lever guide holes 117a and 117b are formed at the center in the same manner as the flanges 103a and 103b.
Support pins 108a and 108b are attached to the tips of the arms 106a and 106b, and cylindrical supports 107a and 107b are fixed to the support pins 108a and 108b.
By aligning the long holes 104a and 104b of the flanges 103a and 103b and the lock lever guide holes 117a and 117b of the arms 106a and 106b, the shafts of the lock levers 105a and 105b are screwed with screws and tightened to the flanges 103a and 103b. On the other hand, it is possible to arbitrarily select and fix a position and an inclination angle for moving the arms 106a and 106b. By this operation, it is possible to freely select a support position for receiving the lens when the camera is attached to a tripod.

JP 2006-109893 A JP 2009-217173 A JP 2010-282039 A

By the way, the arms 106a and 106b extend obliquely with respect to the long holes 104a and 104b of the flanges 103a and 103b, and support the lens and camera by the cylindrical supports 107a and 107b, so that the lock levers 105a and 105b are firmly tightened. However, the cylindrical supports 107a and 107b may be lowered.
Also, when the camera is set to the horizontal shooting position and then once removed and then set to the vertical shooting position, the arms 106a and 106b in which the camera and lens positions are shifted laterally with respect to the camera platform and extended obliquely are provided. Sometimes hit the camera.

In addition, the position of the laterally displaced lens supported by the cylindrical supports 107a and 107b may change, which may cause a problem that the support is not stable.
The object of the present invention is to firmly support a heavy lens barrel without shaking, and the lens support arm is set even if the camera position is shifted laterally from the horizontal shooting style of the camera to the vertical shooting style. It is an object of the present invention to provide a camera holder that can be operated without a horizontal slide arm coming into contact with the camera, and that can realize a reliable support by moving a cylindrical support in response to a similarly displaced lens barrel.

In order to achieve the above object, the lens holder according to claim 1 according to the present invention is a holder body having a rectangular cross section and having a long hole on at least one side surface, a horizontal slide arm having a long hole, and one end. A holder having a lens support arm having a curved cross-sectional support, a long hole, a screw portion of a first knob, and a first screw washer having a function of preventing rotation of a horizontal slide arm; A first arm fixing mechanism for tightening and fixing by inserting the screw washer through the long hole of the horizontal slide arm and the horizontal hole of the horizontal slide arm, and a screw part of the second knob; A screw washer of the second knob is inserted into the long hole of the horizontal slide arm and the long hole of the lens support arm, and the screw washer of the second is screwed and fixed. 2 A horizontal fixing arm, extending the horizontal slide arm guided by the first arm fixing mechanism in a substantially horizontal direction, and fixing the horizontal slide arm to the holder body with the first knob, The lens support arm guided by the first arm fixing mechanism is protruded upward to a position where the lower portion of the lens barrel is supported by the support, and the lens support arm is formed into a horizontal slide arm by the second knob. The lens is held by tightening and fixing.
A lens holder according to a second aspect of the present invention is the lens holder according to the first or second aspect, wherein the holder main body has a long hole on the other side opposite to the one side, and the long hole is formed on either side. By attaching a horizontal slide arm to the right-handed or left-handed person, the lens support operation is facilitated.
A lens holder according to a third aspect of the present invention is the lens holder according to the first or second aspect, wherein the first screw washer having a function of preventing the rotation of the horizontal slide arm has an axial screw length. The thickness of the long hole of the holder body is larger.
A lens holder according to a fourth aspect of the present invention is the lens holder according to the first, second, or third aspect, wherein the support has a stepped cylindrical shape, and is positioned at a right angle on an end portion of the lens support arm. Slidable left and right.
A lens holder according to a fifth aspect of the present invention is the lens holder according to the first, second, third, or fourth aspect, wherein the holder body is made of an aluminum-based metal.

According to the above configuration, it is easy to carry, even if it is a heavy lens, the arm can be reliably supported without lowering, and a lens holder with good operability can be realized. In other words, the horizontal slide arm can be extended while maintaining a horizontal state, and even if it is fastened and fixed with the first knob, the horizontal slide arm can be maintained in a horizontal state without rotating, and the lens support arm is raised in a substantially vertical direction. Thus, the lens is supported from the axial direction of the lens support arm, and the lens can be firmly supported by the extended horizontal slide arm that does not descend.
Further, when the camera is set, the stepped columnar support follows the lens even if the lens moves in the lateral direction, and the lens can be supported without moving with respect to the stepped columnar support.

  1A and 1B are diagrams showing an embodiment of a lens holder according to the present invention, in which FIG. 1A is a plan view and FIG.   It is a figure which shows the structure of the holder main body of FIG. 1, (a) is a bottom view, (b) is a top view, (c), (d) has shown the right view and the left view of (b), respectively. .   FIGS. 2A and 2B are diagrams illustrating the structure of the arm of FIG. 1, in which FIG.   FIG. 2 is a diagram showing the structure of each part forming the arm fixing structure of FIG. 1, wherein (a) is a screw washer, (b) is an anti-rotation screw washer, (c) is a knob, and (d) is an arm fixing mechanism. A and (e) show the arm fixing mechanism B, respectively.   It is a figure which shows the structure of each component which forms a support structure, (a) has shown the support axis | shaft and (b) has shown the cylindrical support with a level | step difference, respectively.   It is a figure for demonstrating the use condition of the lens holder by this invention.   It is a figure which shows the structure of the conventional camera balancer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1A and 1B are diagrams showing an embodiment of a lens holder according to the present invention. FIG. 1A is a plan view and FIG. 1B is a front view.
The lens holder 10 is used for mounting a holder body 1, a horizontal slide arm 3, a lens support arm 2, a stepped column support 4, an arm fixing mechanism A formed by a knob 6, an arm fixing mechanism B formed by a knob 5, and a camera. The knob 7 is included. The stepped cylindrical support 4 supports the lower point of the lens barrel.

FIG. 5 shows a structural example of the stepped cylindrical support 4 and the support shaft 13.
The stepped column support 4 has a cylindrical shape made of a plastic material and has stepped portions 4 at both ends. The cylindrical shaft has a through hole 4b for inserting the support shaft 13 therethrough. The support shaft 13 includes a support slide portion 13b and a support restricting portion 13a, and an end portion of the support slide portion 13b has a female screw 13c for screwing a set screw 28 for preventing the stepped column support 4 from coming off. The end of the support limiting portion 13 has a female screw 13d for screwing a shaft set screw 17 to fix the support shaft 13 to the lens support arm 2.
The stepped columnar support 4 can slide the support slide portion 13b to the left and right. The lower part of the lens barrel is supported by the stepped columnar support 4 as indicated by the dotted line 25 and does not slide sideways on the stepped columnar support 4.

FIG. 2 shows the structure of the holder body 1.
The holder body 1 is formed by cutting a rectangular aluminum square pipe material into the shape shown in FIG.
In order to reduce the weight and to ensure operability for setting a camera attached to a pan head and equipped with a telephoto lens, the lightening (thickening portions 1h, 1i) is performed. The space for the lightening portion 1h is necessary when the camera is mounted and fixed with the knob 7. Further, the lightening portion 1 i is a space necessary for gripping the holder body 1 when the lens support arm is fixed by the knob 5.
On the upper surface of the holder body 1, a camera stop hole 1d is formed through which the screw portion 7a of the knob 7 for camera attachment is inserted. A cork buffer plate 17 is provided around the camera stop hole 1d. This is for reliably holding the bottom of the camera in contact without causing scratches or the like.

The holder main body 1 has a hole 1a in the center upper surface, and a fixed frame 19 such as a pan head is incorporated in the lower surface thereof. The pan head fixing frame 19 is provided with four pan head fixing female screws 19a.
A long hole 1c is provided on the right side surface of the holder body 1, and a pin hole 1e for planting a pin 19 (see FIG. 1) is formed. The pin 19 receives the lower part of the arm 3 to keep the horizontal slide arm 3 horizontal. Similarly, a long hole 1b is also provided on the left side surface of the holder body 1, and a pin hole 1f for planting a pin is formed. The left side long hole 1b is provided to facilitate the operation of a left-handed person as will be described later.
The plate thickness of the holder body 1 is, for example, 3.0 mm, and a sufficient strength is ensured.

FIG. 3 shows the structure of the horizontal slide arm 3 and the lens support arm 2.
The horizontal slide arm 3 and the lens support arm 2 have a rectangular shape, and elongated holes 2a and 3a for guiding the knob 6 and the knob 5 are formed in both arms. The arm is made of, for example, an aluminum material and has a thickness of 5 mm.
In FIG. 1, the horizontal slide arm 3 is attached to the right side surface of the holder body 1 by an arm fixing mechanism A including a knob 6. The support shaft 13 to which the stepped column support 4 is attached is fixed to the support shaft stop hole 2 b of the lens support arm 2, and the lens support arm 2 is attached to the horizontal slide arm 3 by an arm fixing mechanism B including a knob 5.

FIGS. 4A, 4B and 4C show the structure of each part forming the arm fixing structure of FIG.
As shown in FIG. 2A, the screw washer 11 has a long hole fitting portion 11a fitted into the long hole 3a of the horizontal slide arm 3 and provided with a female screw 11b. The length d1 of the long hole fitting portion 11a is smaller than the thickness of the horizontal slide arm.
The anti-rotation screw washer 12 has a long hole fitting portion 12a having a female screw 12b fitted to the side wall having the long hole 1c of the holder body 1 and the long hole 3a of the horizontal slide arm 3 as shown in FIG. doing. The length d2 of the long hole fitting portion 12a is larger than the thickness of the side wall of the holder body 1 having the long hole 1c.
The knobs 5 and 6 described in (c) have screw portions 5a and 6a having E-ring fitting portions 5b and 6b at the tips. The knob 7 is for fixing the camera and has a screw portion 7a.

FIGS. 4D and 4E show the structures of the arm fixing mechanism A and the arm fixing mechanism B. FIG.
The arm fixing mechanism A and the arm fixing mechanism B are not different from each other only in the difference in whether the anti-rotation screw washer 12 or the screw washer 11 is used. The arm fixing mechanism A using the anti-rotation screw washer 12 can be slid in the horizontal direction without rotating the horizontal slide arm 3 with respect to the holder body 1. Since the arm fixing mechanism B using the screw washer 11 is free to rotate the lens support arm 2 with respect to the horizontal slide arm 3, the lens support arm 2 is fixed to the horizontal slide arm 3 so that the lens support arm 2 is substantially perpendicular to the horizontal slide arm 3. be able to. If the inclination of the lens support arm 2 is set at such a substantially right angle, the lens weight is applied in the axial direction of the lens support arm 2 and can be held firmly.

Next, the details of the assembly procedure of FIG.
In FIG. 4 (e), the pressing washer 8 is inserted into the screw portion 5 a of the knob 5, and the screw portion 5 a is inserted into the long hole 2 a of the lens support arm 2 and the long hole 3 a of the horizontal slide arm 3. Further, the screw washer 11 is inserted into the screw portion 5a, and the removal preventing ring 20 is inserted to fit the E ring 25. In this state, the lens support arm 2 and the horizontal slide arm 3 are not separated and are only loosely coupled. At the time of the lens support operation, the lens support arm 2 is set substantially perpendicular to the horizontal slide arm 3, the stepped column support 4 is brought into contact with the lower surface of the lens, and the knob 5 is tightened. At this time, hold the hand so that the lens support arm 2 does not rotate.
In the arm fixing mechanism A using the anti-rotation screw washer 12 of FIG. 4D, the long hole fitting portion 12a enters the long hole 3a of the horizontal slide arm 3, so that the long hole 3a of the horizontal slide arm 3 is not tightened. Is prevented from rotating and can be fed out in a state where the horizontal state is maintained. In addition, since there is some backlash at the time of feeding, the bottom blur is prevented by the pin 19 planted on the side wall of the holder body 1.

  In FIG. 1, a cork buffer plate 17 is provided around the camera stop hole 1 d at the upper rear portion of the holder body 1. Place the bottom of the camera on the cork buffer plate 17, put your hand in the space of the hollow portion 1 h, screw the screw 7 a of the knob 7 into the female screw on the bottom of the camera, and tighten the camera to the lens holder. Can be set.

FIG. 6 is a view for explaining a use state of the lens holder according to the present invention.
The lens holder 10 according to the present invention is attached to the pan head 22 above the tripod 23. A camera 24 with a telephoto lens 21 mounted on the lens holder 10 is fixed by a knob 7 (not shown). In this state, the distal end portion of the telephoto lens portion is scratched by the weight of the telephoto lens 21. That is, the tip of the telephoto lens portion is slightly lowered.
Therefore, the horizontal slide arm 3 of the lens holder according to the present invention is extended in the horizontal direction, and the lens support arm 2 is lifted substantially vertically at the tip thereof, and the tip of the telephoto lens is supported by a stepped cylindrical support 4 (not shown). . Since the lower part of the horizontal slide arm 3 is received by the pin 19 so that the horizontal slide arm 3 is not shaken and a part of the weight applied to the horizontal slide arm 3 is received by the pin 19, the horizontal slide The arm 3 can withstand considerable loads.

  Although the above embodiment is a configuration for a right-handed person, it can be implemented with a similar configuration for a left-handed person. In such a case, a horizontal slide arm may be incorporated in the long hole 1b provided in the left side wall of the holder main body 1 shown in FIG. The mounting operation is the same as that for a right-handed person.

In the above embodiment, the shape of the lightening portions 1h and 1i of the holder main body is as shown in FIG. 2, but the inside of the holder main body can be checked and the weight can be reduced. Since the space is provided for the purpose of the above, other shapes may be used as long as the function is satisfied.
Although an embodiment in which the stepped column support is made of a plastic material has been shown, if the material has an appropriate frictional force to receive the lens barrel and does not scratch the camera bottom, etc. Other materials may be used.

  This is a lens holder for preventing camera shake.

DESCRIPTION OF SYMBOLS 1 Holder body 2 Lens support arm 3 Horizontal slide arm 4 Stepped columnar support 5, 6, 7 Knob 8, 9, 16 Holding washer 10 Lens holder 11 Screw washer 12 Anti-rotation screw washer 13 Support shaft 15, 25 E ring 17 shaft Set screw 18 Washer 19 Pan head fixed frame 20 Fall prevention ring 21 Telephoto lens 22 Pan head 23 Tripod 24 Camera 28 Set screw

Claims (5)

A holder body having a rectangular cross section and having a long hole on at least one side surface;
A horizontal slide arm having a long hole;
A lens support arm having a support with a curved surface at one end and having a long hole;
A screw portion of the first knob and a first screw washer having a function of preventing rotation of the horizontal slide arm, and the screw portion is inserted into the long hole of the holder body and the long hole of the horizontal slide arm A first arm fixing mechanism that fastens and fixes the screw washer by screwing, a screw portion of a second knob, a second screw washer, a long hole of the horizontal slide arm, and the lens support arm A second arm fixing mechanism that inserts the threaded portion of the second knob into the elongated hole and tightens and fixes the second screw washer;
With
The horizontal slide arm guided by the first arm fixing mechanism is extended in a substantially horizontal direction, the horizontal slide arm is fastened and fixed to the holder body by the first knob, and the lower part of the lens barrel is fixed to the lower part of the lens barrel. The lens support arm guided by the first arm fixing mechanism is projected upward to a position supported by the support, and the lens support arm is fastened and fixed to the horizontal slide arm by the second knob. A lens holder characterized by holding.   The holder body has a long hole on the other side opposite to one side, and a horizontal slide arm is attached to either of the long holes on both sides to facilitate lens support for right-handed or left-handed people. The lens holder according to claim 1. The first screw washer with the function of preventing the rotation of the horizontal slide arm is
3. The lens holder according to claim 1, wherein the length of the screw in the axial direction is larger than the thickness of the long hole of the holder body.   4. The lens holder according to claim 1, wherein the support has a stepped cylindrical shape, is positioned at a right angle at an end of the lens support arm, and is slidable to the left and right.   The lens holder according to claim 1, 2, 3, or 4, wherein the holder body is made of an aluminum-based metal.

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