JP2012118157A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus in which even if a battery storage part is downsized, a lock lever can be fixed accurately and destruction of a lock mechanism due to drop impact or the like is prevented to improve assemblability.SOLUTION: A fitting hole on battery chamber side for a positioning projection on battery insertion port side compared to a fixing screw of a lock lever and a battery chamber is made into a slot, and the root of the positioning projection is made into a gentle R and gradually becomes thinner to be in a nearly cone shape toward the projection tip.

Description

  The present invention relates to a storage device having a lock mechanism, and more particularly to a battery fixing member of an imaging apparatus, and more particularly to prevention of destruction of the battery fixing member at the time of a camera dropping impact, which is the imaging apparatus body.

  A battery housing part of a conventional imaging device will be described with reference to FIG. 2, and a battery lock lever 303 as a battery holding member will be described with reference to a schematic perspective view of FIG.

  A battery 300 serves as a power source for the camera, and a battery chamber 301 stores the battery. Reference numeral 302 denotes a battery cover, and 303 denotes a battery lock lever having an L-shaped claw portion 303 a at the tip, which is fixed to the battery chamber 301 with screws 304.

  The battery lock lever 303 is bent in the J direction by receiving a force when the tapered portion 303b is pushed when the battery 300 is inserted. When the battery lock lever 303 is bent, the battery 300 can be stored in the battery chamber 301. After the battery 300 is stored, the tip of the claw portion 303a of the battery lock lever is caught by the battery 300, and the battery 300 is prevented from falling out of the battery chamber 301.

  To remove the battery 300, the battery lock lever claw 303a covering the battery 300 is pushed in the J direction with a finger to release the battery 300 from being locked by the battery lock lever claw 303a. When the lock is released, the battery 300 is discharged in the N direction by a discharge spring (not shown) provided in the battery chamber 301.

  The battery lock lever 303 includes a surface 303a that contacts the battery 300 and a tapered portion 303b that applies a force for the user to release the battery 300 from the battery locked state. The flat portion 303f of the battery lock lever 303 has a positioning convex portion 303d, and the convex portion is positioned and attached by fitting with a hole provided on the battery chamber 301 side.

  Further, the flat portion 303f of the battery lock lever has a screw hole 303e for fixing with the screw 304. The battery lock lever 303 has an inflection point 303c, and the inflection part 303c receives an impact when the inflection part 303c falls due to a structure in which the tip side from the inflection part 303c is screwed to the inside of the battery chamber and the flat part 303f is screwed from outside the battery chamber 301. It has a structure that is difficult to absorb and destroy.

  Here, in order to attach the battery lock lever 303 to the battery chamber 301 with high accuracy, it is necessary to secure the distance between the positioning portions 303d as long as possible, which leads to an increase in the size of the battery storage portion of the camera. Moreover, since the inflection part 303c is provided, the battery lock lever is enlarged.

  In order to solve the above problem, in Patent Document 1, the battery housing mechanism is unlocked by rotating a claw that locks the battery, and the battery lock is not released by a drop impact. In Patent Document 2, the battery is provided with a convex portion, the battery accommodating portion is provided with a concave portion, and the lock mechanism is slid into a space formed between the convex portion of the battery and the concave portion of the battery accommodating portion to prevent the battery from coming off. Yes.

JP 2004-327216 A JP 2009-134888 A

  However, each of the means proposed in Patent Documents 1 and 2 adds new parts, leading to an increase in cost, leading to an increase in the size of the battery storage unit and an increase in the size of the imaging device.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image pickup apparatus that has a battery housing portion that is downsized to prevent breakage of a lock mechanism due to a drop impact or the like and has improved assemblability.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a storage portion, a member to be stored in the storage portion, and a force for biasing the member to be stored in the insertion / extraction direction from the storage portion. ,
An elastic member that is fixed to the storage portion and that contacts the storage member in the storage state, and is positioned and fixed to the storage portion, and is held in a substantially L shape to prevent the storage member from being pushed out by the spring member. In an imaging apparatus comprising a member,
The holding member has at least two convex portions for positioning with the storage portion, and the direction side of the insertion port of the member to be stored is a first range from the screw tightening position on the holding member,
An image pickup apparatus, wherein a hole provided in the storage portion that fits into a positioning dowel existing in the first range is a long hole.

  According to a second aspect of the present invention, in the first aspect of the invention, the root of the convex portion on the holding member has a substantially radius R shape, and the tip side gradually narrows toward the tip from a predetermined range. An imaging device characterized by being:

  In the second invention according to the present invention, in the first invention, the first range is a width of a portion in contact with the member to be stored on the side of the insertion port of the member to be stored from the screw tightening position. Imaging device characterized by having a range of the same width as

  According to the present invention, it is possible to provide an image pickup apparatus that has a small battery storage portion and that is not easily broken by a drop impact or the like, and that has good assemblability.

Schematic of the battery compartment of this embodiment Schematic diagram of conventional battery compartment A perspective view of a conventional lock lever Schematic perspective view of this embodiment Exploded perspective view of this embodiment The perspective view of the lock lever of this embodiment Sectional drawing of the battery storage part of this embodiment

  FIG. 4A is a schematic perspective view seen from the bottom of a digital camera which is an imaging apparatus showing an example of the embodiment of the present invention. FIG. 4B is a schematic perspective view showing a state in which a battery cover 204 of a digital camera which is an imaging apparatus showing an example of the embodiment of the present invention is opened.

  Reference numeral 201 denotes a digital camera which is an image pickup apparatus including a solid-state image pickup device (not shown), an image pickup unit including a lens, a signal processing unit, a power supply circuit unit, a battery storage unit, and a recording unit that records a captured image on a recording medium. Show. Reference numeral 202 denotes an SD memory card (hereinafter referred to as an “SD card”) which is a recording medium for recording data such as a subject image converted into an electric signal by a solid-state imaging device. A battery 203 serves as a power source for the digital camera. A battery cover 204 is a part of the exterior of the digital camera for protecting the SD card 202 and the battery 203. The battery lid 204 includes a battery lid exterior 204a that is a portion facing the exterior, a battery lid interior 204b that faces the housing interior of the battery 203, and a battery lid lock claw 204c that is activated when the battery lid is opened and closed. . Reference numeral 205 denotes a battery chamber which is a storage portion for the battery 203, 206 is a battery lock lever for locking the battery 203 with an end fixed to the battery chamber 205 with a screw (not shown), and 207 is an SD which is a storage portion for the SD card 202. Card slot. Reference numeral 208 denotes a front cover which is a front exterior of the digital camera, 209 is a back cover which is a rear exterior of the digital camera, and 210 is a tripod screw for fixing the digital camera 201 to a tripod. A switch 211 detects opening / closing of the battery cover 204. When the battery cover 204 is opened, the switch 211 is a mechanism for protecting data written in the SD card 202 before the main power of the camera body is turned off.

  To remove the SD card 202 or the battery 203 from the state in which the SD card 202 is stored in the SD card slot 207 and the battery 203 is stored in the battery chamber 205 and the battery cover 204 is closed, first, the battery cover lock claw provided on the battery cover 204 is removed. After sliding 204c in the A direction orthogonal to the battery insertion direction, the battery cover 204 is rotated in the B direction so that the tip end is arcing about the shaft 204d to the state shown in FIG. 4B. Next, when the SD card 202 is taken out, the end face of the SD card is pushed in the direction C which is the SD card insertion direction. Then, the tension (not shown) of the SD card slot 207 is released, and the SD card slot 207 is ejected by an unillustrated ejection spring provided in the SD card slot 207. When inserting the SD card, when the end face of the SD card is pushed in the direction C, the tension of the SD card slot 207 is activated and the SD card is held in the SD slot 207 (this operation is called a push-push method). ). When the battery 203 is taken out, a discharge lever (not shown) in the battery chamber 205 is released by releasing the tightening of the battery 203 by operating the lock lever 206 that is hooked on the battery 203 and tightening the battery in the arrow D direction. As a result, the battery 203 is discharged.

  Next, the battery housing structure in the digital camera will be described using the exploded perspective view of FIG.

  The battery lid 204 has a configuration in which a battery lid lock claw 204c is sandwiched between a battery lid exterior 204a and a battery lid interior 204b and a screw 204e is tightened. The battery cover exterior 204a has a hole in the center for inserting the convex part of the battery cover lock claw 204c, and the shaft 204d is supported by the front cover 208 so that it rotates around the shaft 204d and opens and closes. Can do. The battery lock claw 204c is composed of a convex part on which a user applies a finger when opening and closing, a part having springiness, and a tip part to be locked. When the convex part to which a finger is applied is slid, the spring-like part comes into contact with the battery cover exterior 204a to generate a reaction force, and the battery cover lock claw tip is movable. Further, the tip of the battery lid lock claw can be inserted into the space between the battery chamber 205 and the back cover 209 to lock the battery lid in a closed state.

  Next, the battery holding structure will be described. The battery contact connector 213 is installed in the battery chamber and fixed to an electronic board (not shown) with solder or the like. Power supply and electrical communication are performed in the camera body from a contact piece (not shown) provided in the battery 203 via a contact piece connector 213. The conducting portion of the battery contact connector 213 has a spring property, and by always urging the contact piece on the battery side and assisting the discharge of the battery, the electrical connection is always maintained and instantaneous interruption is prevented. When the lock lever 206 is released, the discharge spring 214 urges the battery 203 to the discharge spring 214 to facilitate the user's battery removal. The discharge spring 214 is inserted through a hole (not shown) provided in the battery chamber, and the battery chamber 205 and the pressing member 215 are fixed by the pressing member 215 with the pressing member 215 to urge the battery 203 in the direction of discharging. Yes.

  The configuration of the lock lever 206 and the battery chamber 205 as battery holding members will be described with reference to the schematic perspective view of FIG. 4, the exploded perspective view of FIG. 5, and the schematic perspective view of the lock lever of FIG.

  The lock lever 206 includes a surface 206f that comes into contact with the battery 203 and a tapered portion 206g where a user applies a force to release the battery 203 from the battery locked state. When the taper portion 206g is pushed when the battery 203 is inserted, it receives a force and bends in the D direction. When the lock lever 206 is bent, the battery 203 can be stored in the battery chamber 205. After the battery 203 is stored, the tip of the claw 206f of the lock lever is caught by the battery 203, and the battery 203 is prevented from falling out of the battery chamber 205. To remove the battery 203, the claw 206g of the lock lever is pushed in the D direction with a finger so that the claw 206f of the lock lever releases the latch of the battery 203 and is taken out by the discharge spring 214 provided in the battery chamber 205. I can do it. By providing the discharge spring 214 at a position facing the battery lock lever 206, the battery 203 is always urged by the lock lever 206, and the battery can be stably held and fixed.

  Details of the battery chamber and the battery lock lever of the present invention will be described with reference to FIG. Since the lock lever 206 is in the battery compartment, it is indicated by a dotted line.

  The battery lock lever 206 is an elastic resin material and has a substantially L shape. Positioning is performed by inserting the first protrusion 206b and the second protrusion 206c provided on the lock lever side into the first hole 205b and the second hole 205c provided in the battery chamber, and screw holes 206a and 205a. The lock lever 206 is fixed to the battery chamber 205 by tightening with a screw 212. The first protrusion 206b of the battery lock lever 206 is in a range 206e from the fixing screw hole 206a to the width of the battery contact surface 206f. The first hole 205b into which the first protrusion 206b is inserted has a long hole shape, and the second hole into which the second protrusion 206c is inserted is a round hole.

  In the present invention, the width in the A direction is reduced by taking the distance in the N direction between the lock lever 206 and the positioning projections 206b and 206c of the battery chamber 205 with the screw hole 206a interposed therebetween. With the above configuration, it is possible to reduce the size while maintaining the positioning accuracy.

  However, when an impact is applied in the battery insertion direction N with the battery inserted, a force is applied so that the lock lever extends in the N direction, and shear stress is applied to the first protrusion 206b in the area 206e closer to the battery discharge port than the screw hole 206a. It becomes easy to start. Therefore, in the present invention, the first hole 205b with respect to the first protrusion 206b of the lock lever of the battery chamber 205 is a long hole, so that the shear stress when an impact is applied is reduced and the breakage is prevented.

  Next, details of the shear stress reducing shape of the lock lever 206 will be described with reference to FIGS. 6 is a perspective view of the lock lever 206, and FIG. 7 is a cross-sectional view of the battery chamber 205 cut in the direction D.

  In the present invention, the base of the protrusion of the lock lever is lowered one step to provide a gentle radius 206d, thereby dispersing the shear stress and reducing the influence. As the fitting length in the D direction of the positioning protrusion is increased with respect to the shear stress, a force is applied to the distal end side, which is disadvantageous. However, there is a space 205d inside the battery chamber 205 where the lock lever 206 bends and retreats, and the lock lever 206 rotates in the E direction with 205e as a fulcrum during assembly. If the positioning protrusion 206c is short, when the lock lever rotates, the positioning protrusion 206c comes out of the positioning hole 205c, and the lock lever floats when the screw 212 is tightened. Therefore, in order to achieve both improvement in assembling workability and reduction of the influence of shear stress, the positioning protrusion is lengthened in the D direction, the fitting portion is minimized, and the shape is gradually narrowed toward the distal end portion so as to have a substantially conical shape.

  With such a configuration, even if there is an impact caused by dropping, the fitting portions of the positioning protrusions 206b and 206c are small and are not broken, so that a battery housing portion that is small and has good assembly workability can be provided.

201: Imaging device 202: SD card 203: Battery 204: Battery cover 205: Battery compartment 206: Lock lever 207: SD card slot 208: Front cover 209: Back cover 210: Tripod screw 211: Detection switch 212: Screw 213: Battery Contact connector 214: discharge spring 215: pressing member 216: screw

Claims (3)

Storage section, (battery chamber 205)
A member to be stored in the storage unit; (battery 203)
An elastic member (exhaust spring 214) having a force for urging the member to be stored in the direction of insertion / removal from the storage portion, fixed to the storage portion, and in contact with the member to be stored;
An L-shaped holding member (lock lever 206) that is positioned and fixed to the storage portion and prevents the member to be stored from being pushed out by the spring member;
In an imaging apparatus comprising:
The holding member has at least two convex portions for positioning with the storage portion (206b, 206c),
The direction (N) side of the insertion port of the member to be stored is the first range (206e) from the screw tightening position (206a) on the holding member,
The imaging apparatus according to claim 1, wherein the hole (205b) provided in the housing portion that fits into the positioning dowel (206b) existing in the first range is a long hole. The root of the convex portion (206b, 206c) on the holding member has a radius R shape (206d), and the tip end side is gradually narrower toward the tip than a predetermined range. The imaging device described. The first range is a range (206e) having the same width as the width (206f) of the portion in contact with the member to be stored on the side (N) side of the insertion port of the member to be stored from the screw tightening position (206a). The imaging apparatus according to claim 1, wherein: