JP2009086104A - Apparatus with projecting member turning to open/close - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus having a biasing member which applies load in a process where a stroboscope body opens but hardly applies load in an opening direction at a position where the stroboscope body is closed. <P>SOLUTION: The equipment provided with a projecting member turning to open/close, for example, a camera apparatus includes the stroboscope body 2 provided to freely turn to open/close on a cabinet 1, a torsion spring 7 for biasing the stroboscope body 2 in the opening direction, a cam member 3 attached to the stroboscope body 2, and a leaf spring 50 for biasing the cam member 3. The cam member 3 successively includes a first cam part 30 with which the stroboscope body 2 comes into contact in the midst of opening, and a second cam part 31 with which the stroboscope body 2 comes into contact when turning to open further. The stroboscope body 2 is provided to freely turn among a first position where it is in a non-load state with the leaf spring 50 in the closed state of the stroboscope body 2, a second position where it receives the load in a direction where torque by the torsion spring 7 is decreased on a condition that the first cam part 30 comes into contact with the leaf spring 50, and a third position where it receives the load generating torque in the same direction as the torque by the torsion spring 7 on a condition that the second cam part 31 comes into contact with the leaf spring 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a device having a projecting body that opens and closes up and down, and more specifically to a camera device such as a digital camera provided with a strobe that can be opened and closed up and down.

4 (a) and 4 (b) are side views of a conventional camera device in which a strobe is provided so as to be rotatable up and down (see Patent Document 1). A strobe body (200) having a strobe lamp (210) is rotated up and down around a pivot (220) provided in the cabinet (100), and a support shaft (25) provided on the strobe body (200) is provided. ) Is fitted to one end of the rotary arm (8) in a rotatable manner. The other end of the rotating arm (8) is fitted into a horizontally long slot (110) provided in the cabinet (100). Further, the cam member (6) is urged counterclockwise by the torsion spring (69) and rotatably fitted to the support shaft (25), and the tip of the cam member (6) is attached to the pivot (220). It contacts the leg piece (90) of the biasing spring (9) fitted. The other leg piece (91) of the biasing spring (9) is in contact with a stopper (26) provided on the strobe body (200).
As shown in FIG. 4 (a), at the position where the strobe body (200) is raised and protrudes, the contact between the leg piece (90) and the cam member (6) is closer to the strobe body (200) than the support shaft (25). ). Therefore, counterclockwise torque obtained by multiplying the torque T of the torsion spring 69 by the load L2 from the leg piece 90 to the distance L2 from the support shaft 25 to the contact is applied to the rotary arm 8. As a result, the other end portion of the rotary arm (8) is pressed against the right end portion of the long hole (110) with a torque larger than the torque T, thereby preventing the strobe body (200) from being attached to the grab.
On the other hand, as shown in FIG. 4 (b), when the strobe body (200) is lowered and closed, the contact between the leg piece (90) and the cam member (6) is closer to the strobe body than the support shaft (25). It is located on the base end side of (200). Accordingly, the rotary arm (8) has a torque obtained by subtracting the clockwise torque obtained by multiplying the torque T of the torsion spring (69) by the load P1 by the leg piece (90) to the distance L1 from the support shaft (25) to the contact point. Join. Therefore, when the user closes the strobe body (200) by hand, a force weaker than the torque T is applied to the user, and the user can close the strobe body (200) with a weak force.

JP-A-6-95219

In the conventional example described above, a load by the biasing spring (9) is applied at the position where the strobe body (200) is closed. Accordingly, there is a problem that workability is poor when a camera device manufacturer assembles the strobe body (200) to the cabinet (100) in the manufacturing process.
An object of the present invention is to provide a device having an urging body that applies a load in the process of opening a strobe body that is a projecting body, but hardly applies a load in the opening direction in a closed position. Another object of the present invention is to be able to arbitrarily set a turning point at which the force for biasing the strobe body in the opening direction is switched from a weak state to a strong state while the strobe body is being opened.

The device includes a protrusion provided on the cabinet (1) so as to be freely opened and closed, a first urging body for urging the protrusion in the opening direction, and a cam member (3 And a second urging body for urging the cam member (3) in contact with the cam member (3),
The cam member (3) includes a first cam portion (30) in contact with the projecting body in the middle of opening and a second cam portion (31) in contact with the projecting body during further opening rotation,
The projecting body has a first position where the projecting body is unloaded or substantially unloaded with the second urging body in the closed state, and the first cam portion (30) is the second urging body. A second position that receives a load in a direction that reduces the torque by the first urging body in contact with the second urging body, and a torque by the first urging body when the second cam portion (31) is in contact with the second urging body. It is rotatably provided between a third position that receives a load that generates torque in the same direction.

In the first position of the projecting body, that is, in the closed state, the projecting body is unloaded or substantially unloaded with the second urging body. That is, the protruding body receives almost no urging force from the second urging body. Thereby, workability | operativity at the time of attaching to a cabinet (1) in the state which closed the protrusion is improved.
When the projecting body opens and reaches the second position, the first cam portion (30) comes into contact with the second urging body and receives a load in a direction that reduces the torque by the first urging body. That is, the torque in the direction of opening the protrusion is reduced. This prevents the projecting body from opening suddenly when the projecting body is opened.
Further, when the projecting body opens and reaches the third position, the load that causes the second cam portion (31) to come into contact with the second urging body and generate a torque in the same direction as the torque by the first urging body. Receive. In other words, the torque in the direction of opening the protrusion is increased. Thereby, a protrusion can be reliably opened to the last.
Further, the magnitude of the torque that biases the protruding body changes with the intersection of the first cam portion (30) and the second cam portion (31) as a turning point. Both cam portions (30) and (31) are formed on the cam member (3), and the position of the intersection can be easily changed by design.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
1 (a) and 1 (b) are perspective views of a device provided with a projecting body according to the present application, specifically, a camera device provided with a strobe so that the strobe can be turned up and down. FIG. ) Shows an open state protruding upward, and (b) shows a state where the strobe body (2) is closed downward.
As is well known, the lens barrel (10) protrudes from the front surface of the cabinet (1). In the following description, the photographing direction of the lens barrel (10) is the front and the reverse direction is the rear. A strobe body (2) is provided on the cabinet (1) above the lens barrel (10) so as to be rotatable about a pivot (20). The pivot (20) is fitted into a bearing (11) which stands on the cabinet (1).
The strobe body (2) is provided with a strobe lamp (21) on the lower surface of the tip, and is urged in the opening direction by a torsion spring (7) fitted to the pivot (20). That is, unlike the biasing spring (9) shown in FIGS. 4 (a) and 4 (b), the torsion spring (7) in this example always biases the strobe body (2) in the opening direction. It is an energizing body. The strobe body (2) is provided with a plate-like cam member (3) as a lever on one side or both sides, and this cam member (3) has one feature in this example.
When assembling the strobe body (2) to the cabinet (1) in a closed state, one leg piece of the torsion spring (7) is locked to the cabinet (1) after the strobe body (2) is closed, and the torsion spring It is possible to prevent the biasing force in the opening direction of (7) from being applied.

The strobe body (2) is closed and is received by a strobe receiving piece (4) provided on the upper surface of the cabinet (1). The strobe receiving piece (4) is forward from the base end of the strobe body (2). Extend. From the base end portion of the strobe body (2), a collar plate (40) located below the strobe receiving piece (4) projects backward.
The flash receiving piece (4) is provided with a lock claw (41). When the strobe body (2) is closed, the lock claw (41) locks the strobe body (2) against the biasing force of the torsion spring. To do.

2 (a) and 2 (b) are left side views of FIGS. 1 (a) and 1 (b). An urging body (5) formed by bending a thin metal plate is attached to the saddle plate (40), and the urging body (5) is a leaf spring formed in an arcuate shape swelled upward. (50), a fitting plate (51) that fits into the gutter plate (40), and a stop plate (52) that is secured to the top surface of the cabinet (1) by screws (53). When the strobe body (2) is rotated, the periphery of the cam member (3) is in contact with the arc surface of the leaf spring (50). That is, the urging body (5) is a second urging body in contact with the peripheral edge of the cam member (3).
The peripheral edge of the cam member (3) forms a cam surface (32). The cam surface (32) has a first cam portion (30) formed in an arc shape substantially concentric with the pivot (20), and a first cam portion (3). A linear second cam portion (31) is continuously formed so as to be located closer to the closing side of the strobe body (2) than the cam portion (30), that is, to the clockwise direction. Let K be the intersection of the first cam portion (30) and the second cam portion (31).

As shown in FIG. 2 (a), when the strobe body (2) is in the closed state, the first cam portion (30) of the cam member (3) is slightly separated from the leaf spring (50). When assembling the strobe body (2) to the cabinet (1), it is possible to prevent the biasing force of the torsion spring (7) from being applied. In this state, no load is applied without receiving the biasing force from the leaf spring (50). It is in a state. This is the first position.
When the strobe body (2) is assembled to the cabinet (1) and the torsion spring (7) is correctly attached, the lock claw (41) is released and the strobe body (2) is opened. (30) contacts the leaf spring (50) and receives an upward biasing force from the leaf spring (50). This is the second position.
In this case, as shown in FIG. 3 (a), a counterclockwise torque T is applied to the cam member (3) by a torsion spring (7) fitted to the pivot (20) from the beginning. Thus, a torque T1 obtained by multiplying the urging force P1 received from the leaf spring (50) by a distance L1 from the P1 to the pivot (20) acts. Since the imaginary line in which the urging force P1 is extended passes on the left side of the pivot (20), the torque T1 is in the clockwise direction opposite to the torque T, and the torque for urging the strobe body (2) is T−T1 = T-P1 × L1
Thus, it becomes smaller than the torque T by the torsion spring (7). Thus, when the flash claw (41) is released and the strobe main body (2) is opened, the strobe main body (2) is prevented from jumping out in a sudden opening direction. That is, the leaf spring (50) has a role as a damper.

As shown in FIG. 2 (b), when the strobe body (2) is further opened and the second cam portion (31) is in contact with the leaf spring (50) after passing through the intersection K, the leaf spring (50) is directed upward. Receive the energizing power of This is the third position. The second cam portion (31) is linear, and as shown in FIG. 3 (b), the imaginary line extending the urging force P2 received from the leaf spring (50) passes to the right of the pivot (20). Therefore, the torque T2 obtained by multiplying the urging force P2 by the distance L2 from the P2 to the pivot (20) is counterclockwise like the torque T, and the torque for urging the strobe body (2) is T + T2 = T + P2 × L2.
Thus, it becomes larger than the torque T by the torsion spring (7). Thereby, the strobe body (2) can be reliably opened to the end. Further, since the linear second cam portion (31) is in contact with the leaf spring (50) so as to be stretched, it is possible to prevent the flash body from sticking when the strobe body (2) is completely opened.
As described above, the torque for energizing the strobe body (2) changes in magnitude with the intersection K as a turning point. Both cam portions (30) and (31) are formed on the periphery of the plate-like cam member (3), and the position of the intersection K can be easily changed in design. For example, the torque for urging the strobe body (2) may be set to be reduced from the torque T until just before the strobe body (2) is opened.

In this example, when the strobe body (2) is in the closed state, the first cam portion (30) of the cam member (3) is slightly separated from the leaf spring (50), and the biasing force of the torsion spring If it is made not to add, it will be in a no-load state. Therefore, when the camera device manufacturer assembles the strobe body (2) to the cabinet (1) in the manufacturing process, it does not receive a biasing force from the leaf spring (50), and the assembly workability is good.
Here, when the strobe body (2) is in the closed state, it is in the no-load state, but it may be in a substantially no-load state. This substantially no-load state means that the first cam portion (30) of the cam member (3) is in contact with the leaf spring (50), but the leaf spring (50) is not bent or hardly bent, and the leaf spring ( This refers to the state that receives almost no urging force from 50). Even in this no-load state, the assembly workability of the strobe body (2) and the operability when closing the strobe body (2) are improved.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
In the above example, the strobe body of the camera device is exemplified as the projecting body, but the projection body is not limited to this. For example, it may be a hop-up type small liquid crystal panel, a lid that pivots up and down, or the like.

(a), (b) is a perspective view of a camera device according to an embodiment of the present invention, (a) is an open state in which the strobe body protrudes upward, (b) is a strobe body closed downward. Each state is shown. (a), (b) is a left view of FIG. 1 (a), (b). (a), (b) is a side view which shows the relationship between a cam member and a leaf | plate spring. (a), (b) is a side view of the conventional camera apparatus which provided the strobe so that rotation was possible up and down.

Explanation of symbols

(1) Cabinet
(2) Strobe body
(3) Cam member
(30) First cam part
(31) Second cam part
(50) Leaf spring

Claims (2)

A protrusion provided on the cabinet so as to be freely openable and closable; a first urging body that urges the protrusion in the opening direction; a cam member attached to the protrusion; A second biasing body for biasing the cam member;
The cam member continuously includes a first cam portion that is in contact with the protrusion in the middle of opening and a second cam portion that is in contact with the protrusion when the protrusion is further rotated.
The projecting body has a first position where the projecting body is unloaded or substantially unloaded with the second urging body in a closed state, and the first cam portion is in contact with the second urging body. A second position that receives a load in a direction that reduces torque by the first urging body, and the second cam portion comes into contact with the second urging body to generate torque in the same direction as the torque by the first urging body. A device is provided that is pivotable between a third position that receives a load to be moved. The projecting body is a strobe body that opens and closes around the pivot on the cabinet. The first biasing body is a torsion spring that fits on the pivot and biases the strobe body in the opening direction. The apparatus according to claim 1, wherein the force body is a leaf spring provided on the cabinet and in contact with the cam member.

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