JPS6134134B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lens cover opening/closing device for a retractable camera, and the invention relates to a lens cover opening/closing device for a retractable camera. After opening, the lens barrel is made to protrude, and when the lens barrel protruding outside the camera body is retracted by an operation lever, the lens barrel is retracted and then the lens cover is closed.

Hereinafter, the present invention will be described in detail with reference to the drawings showing preferred embodiments.

As shown in FIG. 1, a retractable camera has an operating lever 1, an operating lever 3 attached to a shaft 2 of the operating lever 1 in the shape of a bell crank, and a mirror protruding from the top surface of the operating lever 3. Actuation pin 4 for torso projection/retraction operation
a vertical swing lever 9 having a passive swing pin 8 that engages with a guide groove 7 provided on the horizontal swing lever 6; A pair of left and right lens barrel drive levers 13 are connected by a connecting shaft 12 and have interlocking elongated holes 11 that engage with swing pins 10 provided in the lens barrel drive levers 13.
The guide is equipped with a pair of left and right push plates 15 pivotally connected to push pins 14, and guide pins 16 (not shown) protruding from the push plates 15 on both left and right sides of the lens barrel are arranged on both sides of the lens barrel. It is adapted to slide back and forth along the horizontal guide groove 18 of the plate 17. The bending guide groove 5 formed in the horizontal turning lever 6 communicates with the lens barrel projecting/retracting groove 5a which extends in a direction substantially diagonally across the horizontal turning lever 6 through a bending part, and is connected to the lens barrel projection groove 5a which extends in a direction substantially diagonally across the horizontal turning lever 6. A play groove 5b for opening and closing the lens cover is provided, which extends substantially in the longitudinal direction of the movable lever 6. In FIG. 1, which shows the lens barrel protruding from the camera body, when the operating lever 1 is rotated clockwise to retract the lens barrel, the operating pin 4 is inserted into the lens barrel retracting groove. 5a
The actuating pin 4 reciprocates from the bending part communicating with the groove 5b to the tip part, and the actuating pin 4 moves into the lens barrel retracting groove 5a.
Retraction of the lens barrel is completed when it reaches the bending part communicating with the play groove 5b for opening and closing the lens cover, and when the operation lever 1 is further rotated clockwise after the retraction of the lens barrel is completed, the operating pin 4 is moved into the groove 5b. The bending guide groove 5 is formed so that the horizontal rotation lever 6 stops even when the horizontal rotation lever 6 moves along the groove 5b.

When the lens barrel is retracted into the camera body and the operating lever 1 is rotated counterclockwise to extend the lens barrel, the operating pin 4 engages the play groove 5b for opening and closing the lens cover. Through the lens barrel projection groove 5a
As the lens barrel moves inward and reciprocates within the groove 5a, the lens barrel protrudes.

In FIG. 2, reference numeral 21 indicates a regulating pin for opening and closing the lens cover, which is installed on the lower surface of the operating lever 3. Reference numeral 22 denotes an operating plate, which is supported by guide support pins 23 and 24 on the back surface of a lower base plate (not shown) so as to be able to slide in the left-right direction. 25 and 26 are guide holes and guide grooves formed in the actuating plate 22,
Guide support pins 23 and 24 are engaged with each of them. 27 is a tension spring attached to the actuating plate 22, and 28 is an arcuate cam that does not allow the actuating plate 22 to follow the movement of the regulating pin 21, and is regulated by the bias of the tension spring 27. pin 2
It is in contact with 1. Reference numeral 28' denotes a follower cam that is formed in a continuous manner in the front-rear direction at the end 29 of the arcuate cam 28 and causes the actuating plate 22 to follow the movement of the regulating pin 21. When the lens barrel is retracted or protruded through the operating pin 4 and the lens barrel protruding/retracting groove 5a by operating the operating lever 1, the regulating pin 21 moves along the arcuate cam 28. It rotates around the operating lever shaft 2, and the operating plate 22 is stopped, and when the lens barrel is retracted, retraction of the lens barrel is completed just before the regulating pin 21 reaches the end 29 of the arcuate cam 28. I'm starting to do that. Reference numeral 30 denotes a locking step portion as a sliding member engaging portion formed on the actuating plate 22, and a sliding member 31 comes into contact with the locking step portion 30 by the biasing force of the tension spring 32. ing. The sliding member 31 is attached to a guide pin 33 on an intermediate base plate (not shown).
It is installed so that it can slide left and right.
34 is a slide pin protruding from the upper part of the sliding member 31. The lower sector gear 35, intermediate gear 36, and upper sector gear 37 are connected to respective shafts 38, 39, 40.
They are rotatably pivoted to the front surface of the front plate of a box (not shown) so that they interlock with each other. The lower end portion of the lower sector gear 35 is brought into contact with the slide pin 34 of the sliding member 31 by the bias of the tension spring 41. 42 is an opening/closing lever fixed to the upper sector gear 37, and has an interlocking elongated hole 43 formed at its tip. 44 is a lens cover whose upper and lower edges are slidably supported by guide grooves (not shown). A connecting pin 45 fixed to the lens cover 44 engages with an interlocking elongated hole 43 of the opening/closing lever 42.

In the figure, the white arrow indicates the forward direction of the camera, 19 is a pivot shaft to which the horizontal rotation lever 6 is pivoted, and 20 is a swing lever shaft to which the vertical swing lever 9 is pivoted. .

Since the lens cover opening/closing device for the collapsible lens barrel camera of the present invention is configured as described above,
In the drawing showing the lens barrel protruding from the camera body, the operating lever 1 is rotated clockwise around the operating lever shaft 2 together with the operating lever 3, the horizontal rotation lever 6, and the vertical swing lever 9. ,
During the process of inserting the lens barrel into the camera body via the lens barrel drive lever 13, push plate 15, and guide pin 16, the actuating plate 22, which is biased by the tension spring 27, is rotated clockwise. Sliding is prevented by the regulating pin 21 of the lever 3 and the lever 3 is stopped. The regulating pin 21 is connected to the arc-shaped cam 2 of the actuating plate 22.
Retraction of the lens barrel is completed just before reaching the end 29 of 8. Further, when the operating lever 3 continues to rotate clockwise via the operating lever 1, the horizontal rotating lever 6
The actuating pin 4 of the actuating lever 3, which had been engaged with the lens barrel projecting/retracting groove 5a of the bending guide groove 5, moves to the play groove 5b for opening/closing the lens cover, and moves along the groove 5b. As a result, even if the operating lever 3 continues to be rotated after the lens barrel is retracted, the horizontal rotating lever 6 will stop. At the same time, the regulating pin 21 of the actuating lever 3 rotates through the end 29 of the arcuate cam 28 of the actuating plate 22 and away from the cam 28.
Since the restriction by the restriction pin 21 is released, the actuating plate 22 is slid to the left in FIG. 2 by the tension spring 27. Due to the bias of the tension spring 32, the sliding member 31 in contact with the locking step 30 of the actuating plate 22 slides to the left following the leftward sliding of the actuating plate 22. Due to the bias of the tension spring 41, the lower sector gear 35, whose lower end portion is in contact with the slide pin 34 of the sliding member 31, rotates clockwise following the leftward sliding of the sliding member 31. The intermediate gear 36, which is interlocked with the lower sector gear 35, rotates counterclockwise, and the upper sector gear 37 further rotates clockwise. The opening/closing lever 42 is connected to the upper sector gear 37
The lens cover 44 is rotated clockwise around the shaft 40 and the lens cover 44 is slid to the left via the connecting pin 45 that is engaged with the interlocking elongated hole 43 to close it.

When the lens cover 44 is closed, a follower cam 28' of the actuating plate 22 extending in the front-rear direction of the camera is in contact with the regulating pin 21. Therefore,
When the lens barrel is recessed into the camera body, when the operating lever 1 is rotated counterclockwise to perform the protruding operation, the operating pin 4 of the operating lever 3 is used for opening and closing the lens cover. Although it rotates counterclockwise around the operating lever shaft 2 along the idle groove 5b, the horizontal rotation lever 6 is stopped and the lens barrel does not start to protrude. After the operation lever 1 starts rotating counterclockwise until the lens barrel starts protruding, the regulation pin 21 installed on the lower surface of the operation lever 3 moves the following cam 28 of the operation plate 22. ′ to the right and move the actuating plate 2 against the tension spring 27.
Slide 2 to the right. The sliding member 31 is slid to the right against the tension spring 32 via the locking step 30, and is moved against the tension spring 41 of the lower sector gear 35 by the slide pin 34 of the sliding member 31. The upper sector gear 37 is rotated counterclockwise via the intermediate gear 36, and the lens cover 44 is slid to the right by the opening/closing lever 42 and opened. When the lens cover 44 has finished opening, the regulating pin 21 touches the end 2 of the arcuate cam 28 of the actuating plate 22.
9 and the operating lever 3 subsequently rotates counterclockwise around the operating lever shaft 2.
The regulating pin 21 engages with the arcuate cam 28 of the actuating plate 22 to stop the actuating plate 22, and the actuating pin 4 moves from the play groove 5b for opening/closing the lens cover to the groove 5a for projecting and retracting the lens barrel. Move back and forth within 5a,
When the horizontal rotation lever 6 rotates clockwise around the pivot shaft 19, the lens barrel protrudes.

According to the present invention, when the lens barrel recessed inside the camera body is protruded by the operation lever,
The lens cover can be opened using the operating lever before the lens barrel starts to protrude, and when the lens barrel protruding outside the camera body is retracted using the operating lever, the operating lever can be opened after the lens barrel is completely retracted. This allows the lens cover to be closed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an exploded perspective view showing an overview of the internal structure of a retractable lens barrel camera, and FIG. 2 is an exploded perspective view showing an overview of the structure of a lens cover opening/closing device. FIG. 1: Operation lever, 2: Operation lever shaft, 3: Operation lever, 4: Operation pin, 5: Bend guide groove, 5a:
Lens barrel projection groove, 5b: Lens cover opening/closing play groove, 6: Horizontal rotation lever, 9: Vertical swing lever, 12: Connection shaft, 13: Lens barrel drive lever, 1
5: Push plate, 16: Guide pin, 17: Guide plate, 18: Horizontal guide groove, 21: Regulation pin, 2
2: Actuation plate, 27, 32, 41: Tension spring, 2
8: arcuate cam, 28': follower cam, 29: end, 30: locking step, 31: sliding member, 34: slide pin, 35: upper sector gear, 36: intermediate gear, 37: upper sector Gear, 42: Opening/closing lever, 4
3: Interlocking slot, 44: Lens cover, 45: Connection pin.

Claims (1)

[Claims] 1. The operating lever is interlocked with the operating lever, which has an operating pin on the upper surface for operating the lens barrel to protrude and retract, and a regulating pin for opening and closing the lens cover on the lower surface, and is interlocked with the operating lever, and the operating pin engages with the operating lever. A horizontal rotating lever having a groove for protruding and retracting the lens barrel with a play groove for opening and closing the lens cover, a vertical swing lever that is linked to the horizontal swing lever, and a pair of left and right mirrors that are linked by the vertical swing lever. It is equipped with a barrel drive lever and a push plate that is pivoted to each lens barrel drive lever, and the push plate allows guide pins protruding from the left and right sides of the lens barrel to be parallel to the guide plates on both sides of the lens barrel. A non-following cam and a non-following cam that do not cause the regulating pin to move back and forth along a guide groove formed on the regulating pin during the protruding or retracting operation of the lens barrel. An actuating plate having a sliding member engaging portion is interlocked and connected to the outside of a following cam that follows the movement of the regulating pin after the extension or retracting operation of the lens barrel is completed in a series, so as to follow the movement of the sliding member engaging portion. 1. A lens cover opening/closing device for a collapsible lens barrel camera, characterized in that the lens cover is opened and closed via a sliding member and an opening/closing lever interlocked with the sliding member.