JP2004200397A - Opening and closing structure of lid body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the opening and closing structure of a lid body which reduces the component cost and assembly man-hours while making the opening and closing operation simple. <P>SOLUTION: The lid body 17 and a camera main body 10 are connected through a hinge component 24. The hinge component 24 is constituted of a thin sheet type super elastic shape memory alloy, while a plurality of slits 26 are formed on an elbow 27 bent by the opening and closing of the lid body 17 and a shape is stored under a state that the lid body is opened. The sliding operation of the rid body 17 into the direction of an arrow sign (a) with respect to the hinge component 24 is effected whereby the engagement with the camera main body 10 is released, and the lid body 17 is pivoted into the direction of an arrow sign (b), thereby obtaining the opened state automatically. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing structure for a lid that is attached to a main body so as to be freely opened and closed, and is engaged with the main body to be closed.
[0002]
[Prior art]
Electronic devices such as digital cameras and mobile phones are provided with slots for loading memory cards and batteries, and various connectors for connecting to external devices such as personal computers and printers. These slots and connectors are covered with an openable / closable lid for the purpose of dustproofing and waterproofing or for adjusting the appearance of the product.
[0003]
Some of the lids described above have a pop-up function in which the engagement with the device main body is released by pressing and the lid body is automatically opened. The lid body having such a pop-up function is connected to the apparatus main body by a hinge part that is pivotally supported by the rotating shaft. In addition, an opening spring is provided at the engagement portion with the device main body.
[0004]
On the other hand, a foldable mobile phone using a hinge part made of a shape memory alloy or a superelastic shape memory alloy has been proposed (see Patent Document 1). This foldable mobile phone has the advantage that it is easy and easy to handle because it is stored in a shape that allows the hinge parts to be in an optimum calling condition, and does not need to be operated by hand.
[0005]
[Patent Document 1]
JP-A-7-264274 [0006]
[Problems to be solved by the invention]
Since the conventional lid having a pop-up function uses many parts such as a hinge, a rotating shaft, and an opening spring, there is a problem that the parts cost is increased and the number of assembling steps is increased. On the other hand, since the foldable mobile phone described in Patent Document 1 is connected by only two rod-like hinges, there is a possibility of twisting when opened.
[0007]
It is an object of the present invention to provide a lid opening / closing structure that can be opened and closed by a simple operation while reducing the cost of parts and the number of assembly steps.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a lid opening / closing structure that is attached to a main body part so as to be freely opened and closed, and is in a closed state by engaging with the main body part. It is connected using a hinge part made of a thin plate bent to open the body, and by sliding the lid body with respect to the hinge part, the engagement with the main body is released, and the lid body is automatically It has a pop-up function that opens automatically.
[0009]
In addition, it is preferable that the said hinge component consists of a shape memory alloy bent in the state which opens the said cover body at normal temperature. Moreover, it is preferable to form a plurality of slits in the bent part of the hinge part.
[0010]
Further, a click protrusion is formed on the hinge part, and when the lid is closed, the click protrusion is engaged with the click protrusion to stop the click on the hinge part and the cover is slid. It is preferable to form a recess in the lid body that overcomes the click stop after getting over.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, a lens barrel 12 incorporating a photographing lens 11 and a finder objective window 13 are provided on the front surface of the camera body 10 of the camera 2. A release button 14 is provided on the upper surface of the camera body 10, and a subject is photographed by pressing the release button 14.
[0012]
Inside the camera body 10, a battery slot 16 is formed in which a battery 15 for supplying power to each part of the camera 2 is loaded. A lid 17 covering the battery slot 16 is attached to the lower surface of the camera body 10.
[0013]
As shown in FIGS. 2 and 3, the lid body 17 is provided with a hook 20, a slide guide 21, a recess 22, and a retaining protrusion 23. The lid body 17 is connected to the camera body 10 by a hinge part 24. As shown in FIG. 4, the hinge component 24 is made of a thin plate-like superelastic shape memory alloy, and the shape is stored in a state where the lid 17 is opened. The hinge component 24 is formed with four mounting holes 25, a bent portion 27 in which five slits 26 arranged at equal intervals are formed, a stopper 28, and a click projection 29. In addition, the hinge component 24 should just be bent in the state which opens the cover body 17, for example, may be comprised from a leaf | plate spring.
[0014]
The lid 17 is held in a closed state indicated by a solid line in FIG. 2 when the hook 20 engages with a locking hole (not shown) provided in the camera body 10. The engagement between the lid 17 and the camera body 10 is released by sliding the lid 17 in the direction of arrow a shown in FIG.
[0015]
A front end portion of the hinge component 24 is inserted into the slide guide 21. The slide guide 21 guides the sliding of the lid body 17 in the direction of arrow a. When the lid 17 is slid in the direction of the arrow a, the lid 17 automatically rotates in the direction of the arrow b by the shape memory of the hinge part 24 and is in an open state shown by a one-dot chain line in FIG.
[0016]
The recess 22 and the click protrusion 29 of the hinge part 24 constitute a click mechanism 30. When the lid 17 is in the closed state, the recess 22 and the click projection 29 are fitted, and the lid 17 is click-stopped to the hinge part 24. When the lid body 17 is slid in the direction of arrow a, the click protrusion 29 gets over the recess 22 and the click stop is released. Further, after the battery 15 is installed in the battery slot 16, when the lid body 17 is slid in the direction opposite to the arrow a direction in order to close the lid body 17, the click protrusion 29 rides on the concave portion 22, and again the lid body. 17 is click-stopped to the hinge part 24. Thereby, the cover body 17 can be reliably and easily closed.
[0017]
The retaining protrusion 23 contacts the stopper 28 when the lid body 17 is in an open state, and prevents the lid body 17 from coming off in the direction of arrow a. The mounting hole 25 is fitted into a mounting rib 31 provided in the camera body 10. Thereby, the hinge component 24 and the camera main body 10 are connected. The hinge part 24 and the camera body 10 may be connected by screwing or welding.
[0018]
With such a configuration, the pop-up function can be added to the lid 17 with a simple configuration without using parts such as a rotating shaft and an opening spring. In addition, the lid 17 is automatically opened by storing the shape of the hinge part 24 simply by sliding the lid 17 in the direction of the arrow a to release the engagement with the camera body 10, thereby improving the operability. Can do.
[0019]
In the above embodiment, the lid body 17 that covers the battery slot 16 of the camera 2 has been described as an example. However, the present invention is not limited to this, and any lid body that is connected to the main body by a hinge part may be used. Can be applied to.
[0020]
【The invention's effect】
As described above, according to the lid opening / closing structure of the present invention, the main body and the lid are coupled using the hinge component made of a thin plate bent to open the lid, and the lid is hinged. With a pop-up function that disengages the main body and automatically opens the lid by sliding the part, the parts cost and assembly man-hour are reduced, It can be opened and closed by operation.
[0021]
The hinge part is made of a shape memory alloy bent to open the lid at room temperature, and a plurality of slits are formed in the bent part of the hinge part, so that the operability can be further improved. Twist when opening the can be reduced.
[0022]
In addition, a click protrusion is formed on the hinge part, and when the lid is closed, the click protrusion engages with the click protrusion to stop the click on the hinge part, and the click protrusion gets over when the cover is slid. Since the concave portion for releasing the click stop is formed in the lid, the lid can be reliably and easily closed.
[Brief description of the drawings]
FIG. 1 is a front view showing an overview of a camera embodying the present invention.
FIG. 2 is an enlarged cross-sectional view of the vicinity of a battery slot.
FIGS. 3A and 3B are views showing the positional relationship between a lid and a hinge part, FIG. 3A is a view as seen from the lower surface of the camera body, and FIG.
FIG. 4 is a perspective view showing an overview of a hinge part.
[Explanation of symbols]
2 Camera 16 Battery slot 17 Lid 21 Slide guide 22 Recess 23 Stopper 24 Hinge component 26 Slit 27 Bending portion 28 Retaining protrusion 29 Click protrusion 30 Click mechanism

Claims (4)

In the opening and closing structure of the lid that is attached to the main body part so as to be freely opened and closed and is engaged with the main body part and closed,
While connecting the main body and the lid using a hinge component made of a thin plate bent to open the lid,
The lid body is provided with a pop-up function in which the engagement with the main body portion is released by sliding the lid body with respect to the hinge part, and the lid body automatically opens. Opening and closing structure. 2. The lid opening / closing structure according to claim 1, wherein the hinge part is made of a shape memory alloy bent to open the lid at room temperature. The lid opening / closing structure according to claim 1, wherein a plurality of slits are formed in a bent portion of the hinge part. While forming a click projection on the hinge part,
In the state where the lid is closed, the click projection is fitted to the click protrusion, and the lid is click-stopped to the hinge part.
The lid opening / closing structure according to any one of claims 1 to 3, wherein the lid is formed with a recess in which the click protrusion is overcome and the click stop is released when the lid is slid.

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