JP2008010478A - Electronic device lid opening / closing mechanism and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid opening / closing mechanism capable of dispersing the pressure when an external pressure is applied when the lid is opened, and an electronic device provided with the lid opening / closing mechanism. The electronic device includes a replacement part storage unit having an opening, a lid 21 that covers the opening of the replacement part storage, and a lid opening / closing mechanism that controls the movement of the lid 21. The lid opening / closing mechanism includes a lid 21 that rotates about the main shaft 33 as a rotation axis, a main shaft 33 at one end, and the other end fixed to the case at the hinge housing portion 52, and one end having the main shaft 33 It has an auxiliary movable part 32 that is rotatable about the other end.
[Selection] Figure 5

Description

  The present invention relates to a lid opening / closing mechanism that opens and closes a lid of a battery box or a memory box of an electronic device, and an electronic device including the lid opening / closing mechanism.

  In recent years, electronic devices have become smaller and the number of devices that can be easily carried is increasing, so that electronic devices can be used anywhere. For this reason, a battery storage part and a replaceable memory storage part are configured in the housing of an electronic device, and a battery or a memory for power supply is detachably incorporated in the storage part. In many cases, the storage portion of the battery or the like uses an openable / closable lid for the opening to protect the stored battery or memory from being exposed. Such a lid body is formed so as to open the opening portion by performing a rotation operation when the stored item is exchanged.

  However, when the lid of the battery compartment is opened, the lid is structured to be removed from the housing, and the lid may be dropped or damaged when the battery is replaced. Has occurred. Therefore, in order to solve such a problem, there has been proposed one formed so that the lid body is not detached from the housing even when opened.

  For example, the lid is approximately the same as the opening size of the opening of the battery housing, and a fulcrum shaft is integrally formed on one side of the lid, and this fulcrum shaft is fitted in a recess formed on the housing side. In some cases, the lid is rotatably supported and can be opened and closed.

  The lid that opens and closes the storage portion by such rotation has a locking piece that can be elastically deformed at the free end or the like of the lid, and the locking piece is formed to be locked to the recess on the housing side. ing. When the lid is closed, the locking piece maintains the closed state of the lid while being engaged with the recess. When the lid is opened, it is elastically deformed by pressing. As a result, the locked state is released, and the lid can be rotated.

  In the lid opening / closing device configured as described above, when a battery is inserted, the lid is opened with the fulcrum shaft as a fulcrum, and a battery having a predetermined size is opened from the opening of the battery storage unit. The lid is loaded into the storage unit, and the lid closes the opening of the battery storage unit. On the other hand, when the battery is taken out, the lid is opened with the fulcrum shaft as a fulcrum, and the battery is taken out from the battery storage unit.

  In the lid opening / closing device formed in this way, a hinge mechanism such as a fulcrum shaft that rotatably supports the lid outside the housing is exposed to the outside, which impairs the appearance of the entire housing. There was a problem.

In order to solve such a problem, Japanese Patent Application Laid-Open No. 2004-79543 (Patent Document 1) attaches a slidable battery locking piece at an arbitrary position of the opening, and this battery locking piece when the battery is inserted. The battery can be stored by sliding, and the internal battery is locked by the battery locking piece when the battery is stored, so that the internal battery does not fall even when the lid is opened.
JP 2004-79543 A

  However, in the conventional technology as described above, the lid can be opened until the hinge portion of the lid interferes with the housing, but more force is applied in a state where the hinge portion interferes with the housing. The lid opening / closing mechanism is damaged, and there is a problem that the lid may not open or close or may come off. In addition, since electronic devices in recent years are easy to carry, there is a fact that the frequency of such external pressure is increasing.

  The present invention has been made in view of the above-described problems of the prior art, and when a pressure from the outside is applied when the lid is opened, a lid opening / closing mechanism capable of dispersing the pressure, An object is to provide an electronic device including a lid opening / closing mechanism.

  The lid opening / closing mechanism of the electronic apparatus of the present invention has a lid (21) that rotates about the main shaft (33) as a rotation axis, includes the main shaft (33) at one end, and the hinge housing (52 ) And an auxiliary movable portion (32) fixed to the case and having a main shaft (33) that is rotatable about the other end.

  The auxiliary movable portion (32) is rotatable about the auxiliary shaft (34) as a rotation axis, and the auxiliary shaft (34) is fixed to the case in the hinge storage portion (52), and the lid ( 21) may be slidably attached to a main movable plate (31) rotatable with respect to the main shaft.

  The auxiliary shaft (34) includes a torsion spring (35), and the torsion spring (35) has two spiral portions, one of which is attached to the main shaft and the other of which is attached to the auxiliary shaft (34). Furthermore, the auxiliary movable part (32) may be formed of an elastic material.

The electronic device of the present invention includes a replacement part storage unit having an opening, and a lid opening / closing mechanism that opens and closes the opening of the replacement part storage unit. Things are used.
The electronic device may be an imaging optical system, an imaging device (1) including a lens barrel (4) that holds the imaging optical system, an imaging element, a replacement part storage unit, and a lid opening / closing mechanism. is there.

  According to the present invention, it is possible to provide a lid opening / closing mechanism that can disperse the pressure when an external pressure is applied when the lid is opened, and an electronic device including the lid opening / closing mechanism.

  The electronic device according to the best mode for carrying out the present invention includes a replacement part storage unit such as a battery having an opening, a lid body 21 that opens and closes the replacement part storage unit, and a pivotal support for the lid body 21. It has a lid opening / closing mechanism by a hinge part.

  The lid opening / closing mechanism includes a main movable plate 31 that slidably supports a lid 21 that rotates with the main shaft 33 as a rotation axis, a main shaft 33 at one end, and the other end of the case at the hinge housing portion 52. And an auxiliary movable portion 32 having one end provided with a main shaft 33 and being rotatable about the other end.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, a digital camera which is an imaging apparatus as one of many electronic devices will be described.

  The imaging apparatus of the present embodiment is a thin rectangular body having a front case 2 and a back case 3, and a retractable lens barrel 4 and a flash 5 in which the lens barrel is retracted as shown in FIG. As shown in FIG. 2, a display unit 6 using a liquid crystal display panel and various buttons 7 for performing various settings are disposed on the back surface of the imaging apparatus 1. Although not shown, a power button, an imaging button, and the like are appropriately disposed on the top surface of the imaging device 1, and a cover for a replacement part storage unit that stores a replaceable device such as a battery or a memory serving as a power source at the bottom. And a lid opening / closing mechanism for rotatably supporting the lid 21.

  Further, inside the imaging device casing formed by the front case 2 and the back case 3, there are a lens barrel 4, an imaging control device that performs various controls including image processing, and a display unit control device that controls the display unit. A memory for storing image data, a battery as a power source, and the like.

  Then, external light incident from the lens barrel 4 is converted into data by the imaging device and transmitted to the display unit control device, and the display unit control device displays an image on the display unit. The image data is stored in a memory or the like by pressing a shutter button, and is reproduced by the display unit 5 of the image sensor 1 or other devices.

  In addition, as shown in FIG. 3, the lid 21 has a lid body portion 22 which is a thin plate having a substantially rectangular shape having a short side and a long side, and three sides excluding one short side of the lid body portion 22. It has a frame 23 whose cross section is L-shaped or inverted L-shaped, a sliding groove 24 is formed between the lid body 22 and the frame 23, and one short side where the frame 23 is not formed This is a shape in which a small plate-like cover portion 25 extending the lid body portion 22 is formed.

As shown in FIG. 4, the hinge part of the lid opening / closing mechanism that opens and closes the lid 21 includes a main movable plate 31 that holds the lid 21 slidably, an auxiliary movable part 32, a main shaft 33, an auxiliary The shaft 34 and the torsion spring 35 are included.
The main movable plate 31 is a rectangular thin plate having a long side and a short side, and main bearing portions 41 that are attached to the main shaft 33 protrude at both ends of one short side so as to extend the long side. .

  The auxiliary movable portion 32 has a thick wall shape with a substantially V-shaped side surface, and has a main shaft hole 42 in which the main shaft 33 is axially mounted in the vicinity of one end portion, and a twisted portion at the other end portion. A concave portion 44 in which the spring 35 is located is formed, and an auxiliary shaft hole 43 that is pivotally attached to the auxiliary shaft 34 is formed on the opposite side surface forming the concave portion. A notch 45 is formed in which one end of the torsion spring 35 is located from the vicinity of one side surface 44 toward the V-shaped convex portion.

  As shown in FIG. 5, these members are provided with a torsion spring 35 disposed in the recess 44 of the auxiliary movable portion 32, and the auxiliary shaft 33 is attached to the center of the auxiliary shaft hole 43 and the spiral portion of the torsion spring 35. Further, one end of the torsion spring 35 is disposed in the notch portion 45, and the main shaft hole 42 of the auxiliary movable portion 32 is disposed between the main bearing portions 41 of the main movable plate 31, and the main bearing portion 41 A shaft hole of the main bearing portion 31 and the auxiliary movable portion 22 is attached to the main shaft 33 from the side surface.

  As shown in FIG. 6, the front case 2 and the back case 3 of the imaging device 1 are provided on the bottom side that houses the support portion 51 that supports the auxiliary shaft 34 and the auxiliary movable portion 32 in the vicinity of the replacement part storage portion. A hinge housing portion 52 having an opening, and the auxiliary shaft 34 is fixed so as to be sandwiched between the support portions 51 of the front case 2 and the back case 3, and the auxiliary movable portion 32 is disposed inside the hinge storage portion 52. The sliding groove 24 of the lid 21 is slidably inserted into the main movable plate 31. Further, the end of the torsion spring 35 on the side of the notch 45 of the auxiliary movable portion 32 and the other end of the torsion spring 35 are in contact with the bottom surface of the hinge housing portion 52, so Between which the torque of the torsion spring 35 is generated. Furthermore, the cover part 25 of the lid 21 closes the opening of the hinge storage part 52.

  In such a lid opening / closing mechanism, as shown in FIG. 7, when the lid 21 is closed, the auxiliary movable portion 32 is completely accommodated in the hinge accommodating portion 52, and the main movable plate 31 is the lid 21. Is housed in the sliding groove 24.

  Then, as shown in FIG. 8, when the lid 21 is slid in parallel with the bottom surface of the imaging device housing, the locking state of the imaging device housing and the lid 21 is released as shown in FIG. Although the movable plate 31 can rotate and the main movable plate 31 rotates about the main shaft 33 to the housing interference point, the auxiliary movable portion 32 remains housed in the hinge housing portion 52 by the torque of the torsion spring 35. It will be.

  Further, as shown in FIG. 10, when a stronger pressure is applied in the opening direction of the main movable plate 31, the auxiliary movable portion 32 exceeds the torque force of the torsion spring 35. By rotating, the main movable plate 31 opens to a position near the bottom plate of the imaging device housing, and can be opened approximately 180 degrees.

  As shown in FIG. 11, the opening operation of the lid opening / closing mechanism is applied to the force input to the lid F1, the distance input to the lid and the distance to the housing interference point r1, and the rotation axis of the main movable plate. The force is F2, the distance between the rotation axis of the main movable plate and the case interference point is r2, the rotation angle between the main movable plate and the case is θ, the distance between the rotation axis of the main movable plate and the rotation axis of the left hinge R3, T1 is the torque applied to the rotating shaft of the auxiliary movable part, T1 'is the torque of the torsion spring, and F1MAX is the force that breaks the conventional main movable plate.

That is, when the lid 21 is opened, the lid 21 and the imaging apparatus housing interfere with each other due to the housing interference point. However, if further force is applied to the lid 21 in the interfered state, the main movable plate passes through the housing interference point. A force is applied to the 31 rotation shafts. The moment relationship at this time is expressed by equation (1).
F2 * r2 = F1 * r1 (1)
Thus, the force F2 applied to the rotating shaft of the main movable plate is expressed by the equation (2)
F2 = F1 × r1 / r2 (2)
It becomes. Furthermore, the force applied to the rotation shaft of the main movable plate 21 is transmitted as torque to the shaft of the auxiliary movable portion via the auxiliary movable portion, and the torque T1 at this time is expressed by the equation (3).
T1 = F2 cos θ × r3 (3)
Thus, the torque is generated in the torsion spring 35. The relationship between the force F1MAX that damages the main movable plate 31 or the lid 21 and the torque T1 ′ of the torsion spring 35 is expressed by the following equations (4) and (5).
F1 <F1MAX (4)
T1 ′> T1 (5)
By setting the torque T1 ′ of the torsion spring 35 so that the above holds, it becomes possible to operate the auxiliary movable portion 32 before reaching F1MAX and prevent damage.

  In conventional imaging devices, the lid opening / closing mechanism may be damaged if a strong force exceeding the force that breaks the main movable plate is applied to the lid when the lid is open during battery replacement. According to the example, since the auxiliary movable part is provided, when a strong force is applied, the auxiliary movable part operates before the main movable plate breaks, thereby preventing all the force from being applied to the main movable plate. The main movable plate can be prevented from being damaged.

  In addition, by attaching a torsion spring to the auxiliary movable part, when replacing the battery, the mechanism opens only until the main movable plate comes into contact with the case interference point, and the auxiliary movable part operates only when a strong force is applied. It can be.

  The hinge portion is housed in the hinge housing portion 52, and the hinge portion can be closed by the cover portion 25 of the lid body 21. Therefore, when the lid body 21 is opened, the lid body 21 is largely rotated. In addition, when the lid is closed, it is easy to carry without forming a protruding portion outside the casing, which is the outer surface of the case, and the appearance can be maintained.

  Next, an example of another lid opening / closing mechanism of this embodiment will be described. As another embodiment, the assistable portion 32 is formed of an elastic material such as a rubber material or a spring material. As shown in FIG. 12, the auxiliary movable portion 32 is a thick-walled body composed of a hinge portion having a substantially V-shaped side surface and a locking portion 55 extending horizontally from the V-shaped end portion. The portion 55 is fixedly coupled to the inside of the hinge housing portion 52.

  By forming the auxiliary movable portion 32 using an elastic material in this way, the auxiliary movable portion 32 is deformed when a force exceeding the damage limit force of the main movable plate 32 or the lid 21 is applied, and the lid As with the above-described embodiment, the main movable plate 31 and the lid 21 can be prevented from being damaged, and the main movable plate 31 contacts the housing interference point when replacing the battery. The auxiliary movable part 32 can be elastically deformed only when a strong force is applied, and the mechanism moves the main shaft 33 to the outside of the hinge storage part 52 only when a strong force is applied.

  As another example of the lid opening / closing mechanism, as shown in FIG. 13, a torsion spring 57 having two spiral portions can be shared and attached to the main shaft and the auxiliary shaft. In this case, the auxiliary movable portion 32 forms a recess for positioning the torsion spring 57 on the main shaft side, and one main torsion spring is shared by both the main shaft and the auxiliary shaft. One end of the torsion spring 57 is in contact with the back surface of the main movable plate 31, and the other end is in contact with the hinge storage portion 52. The torque of the torsion spring 57 is applied between the main movable plate 31 and the bottom surface of the hinge storage portion 52. Is generated.

  In such a configuration, the angle is controlled by the torque T1 with respect to the rotation angle θ1 of the main axis of the main movable plate, and the torque T2 with respect to the rotation angle θ2 of the auxiliary movable portion 56. Therefore, the auxiliary movable portion 56 operates even when the lid does not cause housing interference, and it becomes easy to disperse the force applied to the main movable plate 31.

  Further, as shown in FIG. 14, neither the main movable plate 31 nor the auxiliary movable portion 32 is attached with anything that generates torque such as a spring, and the main movable plate 31 and the auxiliary movable portion 32 are centered on the main shaft 33 and the auxiliary shaft 34. Each of them may be independently rotatable.

  In such a configuration, there is no interference between the main movable plate 31 and the casing, and the auxiliary movable portion 32 and the main movable plate 31 operate together regardless of the strength of the applied force. By rotating the main movable plate 31 approximately 180 °, the main movable plate 31 can be brought into close contact with the outer surface of the case housing to prevent breakage.

  In addition, this invention is not limited to the form of the above Example, A change and improvement are possible freely in the range which does not deviate from the summary of invention. Further, although only the image pickup apparatus has been described as an electronic device, the present invention can be used for all electronic devices having a built-in replacement part such as a battery or a replacement memory.

1 is a front view showing one embodiment of an electronic device according to the present invention. The rear view which shows one Example of the electronic device which concerns on this invention. The perspective view which shows an example of the cover body in the electronic device which concerns on this invention. The disassembled perspective view of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The perspective view which shows the assembly state of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. FIG. 3 is an exploded perspective view of a lid opening / closing mechanism and an imaging apparatus housing in the electronic apparatus according to the present invention. The figure which shows the closed state of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The figure which shows opening operation | movement of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The figure which shows the open state of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The figure which shows the open state of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The figure which shows the operation state of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The perspective view and side view which show the other example of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The perspective view and side view which show the other example of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention. The perspective view and side view which show the further another example of the lid | cover opening / closing mechanism in the electronic device which concerns on this invention.

Explanation of symbols

1 Imaging device 2 Front case
3 Rear case 4 Lens barrel
5 Flash 6 Display
7 Various buttons
21 Lid 22 Lid body
23 Frame 24 Sliding groove
25 Cover 31 Main movable plate
32,55,56,58 Auxiliary moving part 33 Spindle
34 Auxiliary shaft 35,57 Torsion spring
41 Main bearing section 42 Main shaft hole
44 Recess 43 Auxiliary shaft hole
45 Notch 52 Hinge storage
51 Support

Claims (11)

  It has a lid that rotates around the main shaft as a rotation axis, and has the main shaft at one end, the other end is fixed to the case in the hinge housing, and one end with the main shaft can be rotated around the other end A lid opening / closing mechanism of an electronic device, characterized by having an auxiliary movable portion.   2. The lid opening / closing mechanism of the electronic device according to claim 1, wherein the auxiliary movable portion is rotatable about an auxiliary shaft as a rotation shaft, and the auxiliary shaft is fixed to a case in the hinge housing portion.   The lid opening / closing mechanism of the electronic device according to claim 1, wherein the lid is slidably attached to a main movable plate that is rotatable with respect to the main shaft.   4. The auxiliary shaft is provided with a torsion spring, the torsion spring has two spiral portions, one being attached to the main shaft and the other being attached to the auxiliary shaft. The lid opening / closing mechanism of the electronic device described in 1.   The lid opening / closing mechanism of the electronic device according to claim 1, wherein the auxiliary movable portion is made of an elastic material. A replacement part storage unit having an opening;
A lid opening / closing mechanism for opening and closing the opening of the replacement part storage unit;
The lid opening / closing mechanism includes a lid and an auxiliary movable part,
The lid is rotatable about a main shaft as a rotation axis, the auxiliary movable portion is provided with the main shaft at one end, the other end is fixed to the case at the hinge housing portion, and the one end with the main shaft is the other end An electronic device characterized in that it can be rotated around the center.   The electronic device according to claim 6, wherein the auxiliary movable portion is rotatable about an auxiliary shaft as a rotation axis, and the auxiliary shaft is fixed to a case in the hinge storage portion.   The electronic device according to claim 6, wherein the lid is slidably attached to a main movable plate that is rotatable with respect to the main shaft.   9. The auxiliary shaft includes a torsion spring, and the torsion spring has two spiral portions, one being attached to the main shaft and the other being attached to the auxiliary shaft. The electronic device as described in.   The electronic device according to claim 6, wherein the auxiliary movable portion is made of a material having elasticity.   11. An imaging apparatus comprising: an imaging optical system; a lens barrel that holds the imaging optical system; an imaging element; the replacement part storage unit; and a lid opening / closing mechanism. The electronic device in any one.

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