JP3562864B2 - Image input device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an image input device, and more particularly, to a lock mechanism for an arm stand.
[0002]
[Prior art]
2. Description of the Related Art There have been provided various image input devices for capturing an image captured on a photographic film or an image recorded on a print photograph and inputting a video signal to a video or a television. Among such image input devices, there is a device in which a pair of arm stands that can be freely raised and lowered is provided on both sides of a main body in which an image pickup device including an optical system and a CCD is built. The pair of arm stands are laid down on the main body when not in use. When capturing an image of a photographic film such as a negative or a positive, the pair of arm stands are opened slightly from the main body, and the main body is erected at the tip of each arm stand so that the image pickup device faces upward. Support the state. Further, when imaging a printed photograph or a small three-dimensional object, the pair of arm stands are widely opened from the main body, and the main body is turned upside down at the tip of each arm stand so that the imaging device faces downward. I support it.
[0003]
If the pair of arm stands undulate freely with respect to the main body, it is inconvenient to use and may be damaged. Further, in the inverted support position, since the opening / closing of the arm stand is related to the focus of the image, a lock mechanism is provided so as to be fixed at each of the non-use position, the upright support position, and the inverted support position. . When raising and lowering the pair of arm stands, the arm stands are rotated while operating the lock release button.
[0004]
[Problems to be solved by the invention]
However, there are some users who erroneously operate the arm stand without operating the lock release button, and in severe cases, the lock mechanism may be damaged. When the lock mechanism is broken, the pair of arm stands cannot support the main body at the most loaded inverted support position, and there is a problem that the image cannot be focused.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an image input device that prevents damage to a lock mechanism and securely locks an arm stand at an inverted support position.
[0006]
[Means for Solving the Problems]
In order to solve the above problem, the image input device according to claim 1 is provided with a lock mechanism that operates only when both of the pair of arm stands are at the inverted support position and locks them at that position. Unless the operation of the lock mechanism is released, the operation of raising and lowering the arm stand is prohibited. The image input device according to the second aspect of the present invention is provided with a click mechanism for stopping the pair of arm stands at the non-use position and the erect support position so as not to hinder the undulating operation.
[0007]
According to a third aspect of the present invention, in the image input device, the lock mechanism is disposed between the pair of arm stands, one end of which is rotatably mounted on a shaft, and the other end of which is biased in the opening direction by a spring. A lever and a contact surface formed on an outer periphery of a shaft attachment portion of the arm stand, and when the arm stand is moved to the inverted support position, the holding lever is pivotally moved in the opening direction by spring bias to come into contact with the holding surface. And a lock plate that prevents the pair of holding levers from entering when the pair of holding levers rotate in the opening direction and prevents the pair of holding levers from rotating in the closing direction.
[0008]
Further, in the image input device according to the fourth aspect, a notch is provided on the outer periphery of the cam so that when the arm stand is in the non-use position and the upright support position, the holding lever cannot be fully opened and enters.
[0009]
When the arm stand is moved to the non-use position or the upright support position, the holding lever does not fully open into the notch of the cam formed on the outer periphery of the shaft attachment portion and is stopped by clicking. Thereby, the arm stand is reliably positioned between the non-use position and the upright support position, but is not locked because the lock plate does not enter between the pair of holding levers. Even if only one arm stand is raised or lowered to the inverted support position, the lock plate is not locked because it cannot enter between the pair of holding levers. When both of the pair of arm stands are moved to the inverted support position, the pair of holding levers are rotated in the opening direction by the bias of the spring and contact the contact surface of the cam. The lock plate enters between the pair of holding levers and prevents the pair of arm levers from rotating in the closing direction, so that the pair of arm stands are locked.
[0010]
【Example】
FIG. 2 is an external view showing the image input device of the present invention in a non-use state. The image input device 2 includes a main body 3 formed in a vertical shape, a pair of arm stands 4 and 5 that are pivotally mounted on both side surfaces of the main body 3 and that can be raised and lowered with respect to the main body 3. And a head portion 6 rotatably mounted on the upper portion of the portion 3.
[0011]
The main body 3 incorporates an optical system such as a lens and an image pickup device including a CCD and various electric circuits, and various operation switches and image output terminals 8 are exposed on a side surface. An unlock button 10 for unlocking the arm stands 4 and 5 is exposed from an opening 9 formed on the side surface of the main body 3.
[0012]
The imaging device is arranged toward the upper head unit 6, and an imaging opening (not shown) is provided above the head unit 6. Then, as shown in FIG. 3, a film carrier 13 is inserted into the slot 12 of the head unit 6, an image of the photographic film 13a sandwiched between the film carriers 13 is captured, and the video signal is converted to a video or television or the like. Output. On the upper surface of the film carrier 13, a diffusion plate 13b for uniforming illumination light for illuminating the photographic film 13a is assembled. When imaging a printed photograph or a small three-dimensional object, as shown in FIG. 4, the main body 3 is inverted so that the imaging opening of the head 6 is directed downward, and For example, the print photograph 15 is placed and imaged.
[0013]
A pair of lamp houses 17 and 18 are attached to the upper part of the head section 6 so as to be openable and closable, and a lamp serving as a light source is assembled inside the lamp houses 17 and 18. When the film 13 is imaged, the lamp houses 17 and 18 are closed to illuminate the film 13 from the back as shown in FIG. Further, when photographing a print photograph or a three-dimensional object, as shown in FIG. 4, the lamp houses 17 and 18 illuminate the print photograph 15 in an open state. The head unit 6 is rotatable so that the image direction can be easily switched.
[0014]
The arm stands 4 and 5 are plate-shaped, and each is rotatably mounted so as to sandwich the main body 3 between two shaft attachment portions 4a and 4b (see FIG. 9) and 5a and 5b. I have. The tips of the arm stands 4 and 5 are elongated so as to be located below the lower surface 3a of the main body 3 when not in use, and rubbers 20 and 21 for preventing slip are attached.
[0015]
When the image input device 2 is not used, the arm stands 4 and 5 fall down with respect to the main body 3 as shown in FIG. 2 to reduce the size of the image input device 2. When imaging a film such as a negative film or a positive film, as shown in FIG. 3, and is grounded to support the image input device 2 in an upright state. Further, when imaging a printed photograph or a small three-dimensional object, the two arm stands 4 and 5 are widely opened from the main body 3 as shown in FIG. 3 is supported in an inverted state. In this inverted support position, the arm stands 4 and 5 are locked by the lock mechanism.
[0016]
FIG. 5 schematically shows a lock mechanism of the arm stand. The lock mechanism comprises a pair of cams 23, 24 formed on the outer periphery of the shaft mounting portions 4a, 5a of the arm stands 4, 5 and a pair of rotatably mounted shafts coaxially 25 between the arm stands 4, 5. The holding levers 26, 27 are assembled between the pair of holding levers 26, 27, and the holding lever 26 is turned clockwise, and the holding lever 27 is turned counterclockwise, that is, the opening direction of the two holding levers 26, 27. , And a lock plate 30 urged upward by a spring 29.
[0017]
The holding levers 26, 27 are provided with projections 26a, 27a that are constantly in contact with the cams 23, 24 by the bias of the compression spring 28. Each of the holding levers 26 and 27 is formed with a regulating piece 26b and 27b protruding inward. A lock piece 30a formed on the back side of the lock plate 30 is always in contact with the restriction pieces 26b and 27b by the bias of the spring 29. The lock plate 30 is integrally formed with a lock release button 10 that is exposed to the outside through the opening 9 of the main body 3 on the front side. The surface of the lock release button 10 is provided with a non-slip and can be slid up and down.
[0018]
On the outer periphery of the cams 23 and 24, notches 23a and 24a into which the projections 26a and 27a of the holding levers 26 and 27 enter when the arm stands 4 and 5 are in the non-use position, and as shown in FIG. Notches 23b and 24b into which the projecting pieces 26a and 27a enter when the 4 and 5 are in the upright support position are provided. As shown in FIG. 1, the cams 23 and 24 have contact surfaces 23c with which the projections 26a and 27a of the holding levers 26 and 27 come into contact when the arm stands 4 and 5 are turned to the inverted support position. , 24c are formed.
[0019]
When the arm stands 4 and 5 are turned in the opening direction from the non-use position, the cams 23 and 24 press the projections 26 a and 27 a of the holding levers 26 and 27, and resist the urging of the compression spring 28. Then, the holding lever 26 is slightly rotated counterclockwise and the holding lever 27 is slightly rotated clockwise, that is, the pair of holding levers 26 and 27 are slightly rotated in the closing direction. When the opening angle of the arm stands 4 and 5 reaches the upright support position, the two holding levers 26 and 27 urged by the compression spring 28 rotate in the opening direction and enter the cutouts 23b and 24b, and the arm stand 4 and 5 are held in the upright support position.
[0020]
Also, when the arm stands 4 and 5 are rotated from the erect support position to the non-use position, the holding levers 26 and 27 operate in the same manner by the bias of the compression spring 28, and the projections 26a and 27a Enters the notches 23a and 24a. Thus, between the non-use position and the upright support position, the rotation of the arm stands 4 and 5 causes a click feeling. Further, a click feeling can be obtained even when only one of the arm stands 4 and 5 is rotated between the non-use position and the upright support position.
[0021]
When the arm stands 4 and 5 are turned to the inverted support position, the holding levers 26 and 27 cause the protruding pieces 26a and 27a to contact the contact surfaces 23c and 24c of the cams 23 and 24. At this time, the holding levers 26 and 27 are slightly rotated clockwise and counterclockwise by the bias of the compression spring 28, respectively. As a result, the space between the holding levers 26 and 27 is opened, and the space between the regulating pieces 26b and 27b is also widened, so that the contact of the regulating pieces 26b and 27b with the lock piece 30a is released. Then, the lock plate 30 is slid upward by the bias of the spring 29, and the lock piece 30a enters between the restriction pieces 26b and 27b.
[0022]
When the arm stands 4 and 5 are turned toward the non-use position in the above state, the cams 23 and 24 press the protrusions 26a and 27a of the holding levers 26 and 27. However, since the holding levers 26 and 27 abut against the lock piece 30a inserted between the restriction pieces 26b and 27b and are prevented from rotating in the closing direction, as a result, the arm stands 4 and 5 are rotated. Cannot be performed and it is locked. To release the lock of the arm stands 4, 5, the lock release button 10 of the lock plate 30 is slid toward the lower side of the main body 3 against the bias of the spring 29, and Is rotated toward the non-use position.
[0023]
The lock of the arm stands 4 and 5 at the inverted support position is not performed unless both the arm stands 4 and 5 are turned to the inverted support position. For example, as shown in FIG. 7, even if only the arm stand 4 is turned to the inverted support position and the holding lever 26 is turned in the opening direction, the regulating piece 27b of the other holding lever 27 locks the lock plate 30. It will be in the state of being in contact with the piece 30a. Also, as shown in FIG. 8, the same applies when only the arm stand 5 is turned to the inverted support position.
[0024]
Next, the operation of the above embodiment will be described. As shown in FIG. 2, the image input device 2 when not in use is downsized with the arm stands 4 and 5 lying down on the main body 3. As shown in FIG. 5, the lock mechanism of the arm stands 4 and 5 when not in use is provided with notches 23a and 24a of cams 23 and 24 formed on the outer periphery of the shaft attachment portions 4a and 5a, and holding levers 26 and 24. 27 projecting pieces 26a, 27a are inserted by the bias of the compression spring 28. Thereby, the arm stands 4 and 5 are held at the non-use position. The lock release button 10 formed integrally with the lock plate 30 is in a state where the lock piece 30a is in contact with the regulating pieces 26b and 27b by the bias of the spring 29, so that the main body 3 Is located below.
[0025]
When an image of a film such as a negative film or a positive film is taken by the image input device 2, the arm stands 4 and 5 are opened slightly with respect to the main body 3 as shown in FIG. The main body 3 is erected by grounding the non-slip rubbers 20 and 21 attached to the tips of the stands 4 and 5. When the arm stands 4 and 5 are turned in the opening direction, the cams 23 and 24 move the holding lever 26 counterclockwise and the holding lever 27 clockwise against the urging of the compression spring 28 as shown in FIG. Slightly. When the arm stands 4 and 5 reach the upright support position, the holding levers 26 and 27 rotate in the opening direction by the bias of the compression spring 28, so that the projecting pieces 26a and 27a enter the notches 23b and 24b. To hold the arm stands 4 and 5 in the upright support position.
[0026]
A film carrier 13 is inserted into the slot 12 of the head section 6 of the image input device 2 set at the upright support position. When the lamps of the lamp houses 17 and 18 are turned on with the lamp houses 17 and 18 closed, the back side of the photographic film 13a is illuminated via the diffusion plate 13b of the film carrier 13, and the image pickup device in the main body 3 is illuminated with the photograph. It captures an image of the film 13a and outputs the video signal to a video or television.
[0027]
When imaging a print photograph or a small three-dimensional object with the image input device 2, the arm stands 4 and 5 are widely opened with respect to the main body 3 as shown in FIG. The main body 3 is turned upside down with the anti-slip rubbers 20 and 21 grounded.
[0028]
When the arm stands 4 and 5 are turned to the inverted support position, it is preferable to perform the rotation on each side so as not to drop the image input device 2 and to prevent an unnecessary load from being applied to the arm stands 4 and 5. First, as shown in FIG. 7, only the arm stand 4 is rotated to the inverted support position. As a result, the holding lever 26 is rotated clockwise by the urging force of the compression spring 28, and the projection 26a is brought into contact with the contact surface 23c of the cam 23 to hold the arm stand 4 at the inverted support position. Further, at this time, since the regulating piece 27b of the holding lever 27 is in contact with the lock piece 30a of the lock plate 30, the arm stand 4 is not locked at the inverted support position.
[0029]
Next, as shown in FIG. 8, the arm stand 5 is rotated toward the inverted support position. Then, as shown in FIG. 1, the holding lever 27 is rotated counterclockwise by the urging of the compression spring 28, and the projection 27 a is brought into contact with the contact surface 24 c of the cam 24. When the space between the holding levers 26 and 27 is opened, the lock piece 30a of the lock plate 30 urged upward by the spring 29 enters between the restriction pieces 26b and 27b. As a result, the holding levers 26 and 27 are prevented from rotating in the closing direction, so that the arm stands 4 and 5 are locked in the inverted support position. Further, the lock release button 10 moves to the upper side of the main body 3 within the opening 9.
[0030]
The image input device 2 set in the inverted support position has a main body portion illuminated by the lamp houses 17 and 18 when the print photographs 15 and the like are placed below the head portion 6 with the lamp houses 17 and 18 opened. The imaging device in 3 captures the image of the print photograph 15 and outputs the video signal to a video or a television. Since the arm stands 4 and 5 are securely locked, they do not expand or bend even if the entire weight of the main body 3 is supported, and the focusing is accurate.
[0031]
In order to unlock the arm stands 4 and 5, the unlock button 10 is slid toward the lower side of the main body 3 in the opening 9 against the bias of the spring 29. Then, while the lock release button 10 is slid downward, one of the arm stand 4 and the arm stand 5 is rotated in the closing direction. When one of the arm stands 4 and 5 is rotated in the closing direction, one of the restricting pieces 26b and 27b of the holding levers 26 and 27 enters above the lock piece 30a of the lock plate 30. Even if the slide operation is canceled, the arm stands 4 and 5 are not locked again.
[0032]
In the above-described embodiment, the lock mechanism is provided only on the shaft attachment portions 4a and 5a of the arm stands 4 and 5, but as shown in FIG. 9, the lock mechanism is provided on the shaft attachment portions 4b and 5b of the arm stands 4 and 5. May also be provided. In this case, cams 34 and 35 similar to the cams 23 and 24 are provided on the outer periphery of the shaft attachment portions 4b and 5b, and a pair of holding levers 36 and 37 are pivotally mounted on the shaft 38 between them. , And is urged in the opening direction by the compression spring 39. Thus, when the arm stands 4 and 5 are turned to the non-use position, the upright support position, and the inverted support position on the shaft attachment portions 4b and 5b, the cams 34 and 35 and the holding lever 36, 37 is engaged to perform positioning.
[0033]
Further, a lock mechanism may be provided on the shaft attachment portions 4b and 5b. In this case, when the lock plates on both sides are connected so as to penetrate the main body, the locks on both sides can be released only by operating the lock plate on one side. Further, the urging of the holding lever and the lock plate may be performed by one spring.
[0034]
Further, the rotational force of the arm stand is directly applied to the holding lever by a cam formed on the outer periphery of the shaft attachment portion. For example, when it is necessary to arrange some parts between a pair of arm stands, the arm stand May be applied to the holding lever at a remote position via a gear, a belt, or the like.
[0035]
【The invention's effect】
As described above, the image input device of the present invention is locked only when both arm stands are in the inverted support position where the load is most applied to the arm stand. No troublesome operation such as unlocking is required. In addition, an erroneous operation of rotating the arm stand while being locked is reduced. Further, since the lock is not forgotten to be locked at the inverted support position, the arm stand does not expand at the inverted support position, and the focusing is accurate.
[0036]
Further, the lock mechanism is composed of a cam, a pair of holding levers, a lock plate, a spring and the like, so that the cost is low, and the mechanism is simple, so that there is little trouble. Further, at the upright support position and the non-use position other than the inverted support position, the arm stand is click-stopped, so that the positioning at each position is simple and reliable.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a lock mechanism in a locked state of an image input apparatus according to the present invention.
FIG. 2 is an external perspective view of the image input device in a non-use state.
FIG. 3 is an external perspective view of the image input device at an upright support position.
FIG. 4 is an external perspective view of the image input device at an inverted support position.
FIG. 5 is a schematic view showing a lock mechanism in an unused position.
FIG. 6 is a schematic view showing a lock mechanism in an upright support position.
FIG. 7 is a schematic diagram showing the lock mechanism in a state where only one arm stand is turned to an inverted support position.
FIG. 8 is a schematic diagram showing the lock mechanism in a state where one arm stand is turned to an inverted support position and the other arm stand is turned to an upright support position.
FIG. 9 is a schematic diagram when a lock mechanism is provided on the other shaft attachment portion.
[Explanation of symbols]
2 Image input device 3 Main body part 4, 5 Arm stand 4a, 4b, 5a, 5b Axle attachment part 10 Lock release button 23, 24 Cam 26, 27 Holding lever 28 Compression spring 30 Lock plate 30a Lock piece

Claims (4)

An image input device having a built-in image pickup device in a main body unit, which picks up an image photographed on a photographic film or an image recorded in a print photograph and outputs a video signal, and has two side surfaces of the main body unit, respectively. A pair of arm stands that can be raised and lowered freely is provided, each of the pair of arm stands is in an unused position in which it falls down along the main body, and each of the arm stands is opened slightly from the main body, and the imaging device faces upward by each of the distal ends. An upright support position for supporting the main body in an upright state so that the main body is in an upright position, and the main body is supported in an upright position such that the imaging device is downwardly opened by each of the distal ends. In an image input device configured to take a support position,
A lock mechanism that operates only when both of the pair of arm stands are opened to the inverted support position and locks them at that position is provided, and unless the operation of the lock mechanism is released, the up / down operation of the arm stand is performed. An image input device characterized in that it is prohibited. 2. The image input device according to claim 1, further comprising a click mechanism that stops the pair of arm stands at a click position between a non-use position and an upright support position so as not to hinder the up-and-down operation. The lock mechanism is disposed between a pair of arm stands, one end of which is rotatably mounted on a shaft, and the other end of which is biased in a direction of opening by a spring, and a pair of holding levers of a shaft mounting portion of the arm stand. A cam formed on the outer circumference and having a contact surface formed by the holding lever pivoting in the opening direction by spring bias when the arm stand is moved to the inverted support position, and a pair of holding levers are both provided. The image input device according to claim 1, further comprising a lock plate that enters between the opening direction and the rotation direction and prevents the rotation direction in the closing direction. 4. The cam according to claim 1, wherein a notch is provided in an outer periphery of the cam so that the holding lever cannot be fully opened when the arm stand is in the non-use position and the upright support position. Image input device.

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