JPH10341362A - Video camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To link a rear panel attachably and detachably tab from a rear chassis with a single action by fitting plural dimples and locking pawls which are integrally formed on the synthetic resin rear panel to plural nibs and locking pawl engage parts formed on the rear chassis made of metal sheet. SOLUTION: A rear panel 2 is formed from a synthetic resin, and two horizontal dimples 41 are integrally formed at the almost central parts of both upper and lower ends. Further, elastic lock elements having locking pawls 42 are integrally formed with a vertical symmetry so as to have them face these locking pawls 42 from the upside and the downside. A pair of nibs 47 composed of long holes with long diameters are formed integrally with a circular hole at the almost central parts of both the upper and lower ends on the rear chassis 10. When linking the rear panel 2 on the back of rear chassis 10, two dimples 41 are fitted from the back into two nibs 47. At the same time, the elasticity of elastic lock elements is utilized, the four lock pawls 42 are fitted simultaneously from the back into the notches of four lock elements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a security device,
The present invention belongs to the technical field of a video camera most suitable for being applied to a CCD video camera or the like that can be widely used for medical use, for public stadiums, and for weather observation.

[0002]

2. Description of the Related Art The applicant of the present invention has previously developed a CCD video camera shown in FIGS. 10 to 17 as an example of a video camera. This CCD video camera
A substantially rectangular case 5 is assembled by a front panel 1 made of aluminum die-casting, a rear panel 2 having a composite structure of synthetic resin and sheet metal, and upper and lower covers 3 and 4 made of sheet metal. Then, a lens 6 is mounted at the center of the front panel 1, a CCD (not shown) is mounted in the case 5 on the optical axis of the lens 6, and a tripod mount for hanging a camera is mounted on the upper cover 3 or the lower cover 4. 7 is detachably screwed with a plurality of screws 8.

In the case 5, a main chassis 9 made of sheet metal and having a substantially U-shaped vertical cross section is screwed to the rear portion of the front panel 1 at the rear portion thereof. After screwing the rear panel 2 through the rear chassis 10, the upper and lower covers 3 and 4, whose vertical cross-sectional shapes are formed in a substantially U-shape with vertical symmetry, are screwed on the upper and lower sides of the main chassis 9 and the rear chassis 10. Case 5 was being assembled.

At this time, first, as shown in FIG. 15, the rear panel 2 is made of a synthetic resin and has a substantially square outer peripheral frame 2A.
And a substantially square plate 2B made of sheet metal. Then, the plate 2B is fitted from the rear to the inside of the outer peripheral frame 2A, and four screws 12 are inserted from the rear into the screw insertion holes 11 formed at the four corners of the plate 2B, and the four screws 12 are inserted into the outer peripheral frame. Screw holes formed in the four corners of the rear chassis 10 by passing through the screw insertion holes 14 formed in the corner protrusions 13 integrally formed at the four corners of the inner periphery of the 2A (the screw holes are threaded). 15), and the outer frame 2A and the plate 2B are detachably screwed to the rear chassis 10 by fastening together.

Next, the printed circuit board 17 is detachably fixed to the front surface (the main chassis side) of the rear chassis 10 with a plurality of screws 18, and the printed circuit board 17 and one side of the main chassis 9 are fixed with a plurality of screws 19. Connectors 21 and 22 of printed circuit board 20 screwed
The space is detachably connected by a flexible printed circuit board 23. Then, as shown in FIG. 16, the flexible printed circuit board 23 is folded into a substantially Z-shape against its elasticity, and the left and right side pieces 10a which are vertically bent to the front side of the rear chassis 10 are attached to the main chassis. 9 is inserted into the left and right side pieces 9a of the rear chassis 10 from the rear side. At this time, a total of four dowels 24, each of which is pressed outside the left and right side pieces 10a of the rear chassis 10, are combined with the left and right side pieces 9a of the main chassis 9. Each pair of four U-shaped grooves 25 formed horizontally at the rear end is fitted horizontally from behind. The left and right side pieces 9a of the main chassis 9
The two screws 27 inserted from the left and right sides into the two screw insertion holes 26 formed at the rear end of the rear chassis 10 are screwed into the two screw holes 28 formed on the left and right side pieces 10a of the rear chassis 10, The rear chassis 10 is detachably screwed to the main chassis 9.

Finally, as shown in FIGS. 16 and 17, upper and lower covers 3 and 4 are fitted on the upper and lower sides of the main chassis 9 from above and below, and these upper and lower ends 3a and 4a are fitted in an inner and outer double manner. Combine. A total of four screw insertion holes 29 formed at two locations before and after the upper and lower ends 3a, 4a are provided.
, Four screws 30 are inserted from both right and left sides, and these screws 30 are screwed into a total of four screw holes 31 formed in the left and right side pieces 9a of the main chassis 9, and the upper and lower covers 3, 4 are fixed. It is screwed to the main chassis 9 so that it can be detached and attached together. Then, two screws 33 are inserted from both upper and lower surfaces into two screw insertion holes 32 formed at the center of the rear ends of the top plate 3b and the bottom plate 4b of the upper and lower covers 3, 4, and these screws 33 are rearwardly inserted. The upper and lower covers 3, 4 are detachably screwed to the rear chassis 10 by screwing into the screw holes 34 of the two protruding pieces 10b which are horizontally bent from the upper and lower ends of the chassis 10 to the front side (main chassis side). I do.
Then, the front end of the bottom 4b of the lower cover 4 (or the upper cover 3).
The front end of the top plate 3b) and the front end of the tripod mount 7 are similarly detachably screwed to the front panel 2 by two screws 33 respectively. And the printed circuit board 17
A plurality of connectors 35, terminals 36, switches 37, light emitting diodes 38, and the like mounted on the rear chassis 10 are projected rearward through a plurality of through holes 39 formed in the rear chassis 10 and the plate 2B.

[0007]

However, in this CCD video camera, the rear panel 2 has a composite structure of an outer frame 2A made of synthetic resin and a plate 2B made of sheet metal, and the outer frame 2A and the plate 2B are assembled. The structure which is fastened together to the rear chassis 10 by four screws 12 is as follows.
There is a problem that the number of parts, the number of processing steps, and the number of steps for screwing work are large, resulting in high costs. A method of sandwiching the plate 2B between the outer peripheral frame 2A and the rear chassis 10 in a sandwich shape and fixing the outer peripheral frame 2A to the rear chassis 10 from the inside with four tapping screws is also conceivable. , 19,2
7, 30, and 33 (these common screws are used for these screws), so the types of screws to be used are increased. In addition to the increase in the number of parts, the types of screws each time the rear panel 2 is detached and attached. Must be selected, the work becomes complicated, and the workability deteriorates.

In this CCD video camera, the rear panel 2 is connected to the main chassis 9 by the rear chassis 10.
When attaching to the rear end of the main chassis 9, a total of four dowels 24 of the rear chassis 10 are fitted into four horizontal U-shaped grooves 25 of the main chassis 9 from behind. The dowel 24 of the rear chassis 10 is moved by the repulsive force of the printed circuit board 23 to the main chassis 9.
From the U-shaped groove 25. Therefore, when the rear chassis 10 is screwed to the main chassis 9 from the left and right sides with two screws 27, it is necessary to strongly press the rear chassis 10 against the main chassis 9 from behind using a jig or the like. There has been a problem that the work of fixing the screw 27 takes a lot of time and the workability is poor.
Further, in this structure, the two screws 27 are indispensable parts, and the number of screws used is large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simplified structure of a rear panel, simplicity of assembling work of a rear panel, simplicity of assembling work of a rear chassis, and robustness of structure. It is an object of the present invention to provide a video camera capable of improving the image quality and the like.

[0010]

According to the present invention, there is provided a video camera in which a plurality of dowels and locking claws are integrally formed on a synthetic resin rear panel. Are fitted in a plurality of dowel holes and locking claw engaging portions formed in a sheet metal rear chassis, whereby the rear panel is detachably connected to the rear chassis.

In the video camera of the present invention having the above-described structure, the plurality of dowels and locking claws of the rear panel are simultaneously fitted into the plurality of dowel holes and locking claw engaging portions of the rear chassis. The rear panel can be connected to the rear chassis with one touch.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a CCD video camera to which the present invention is applied will be described below with reference to FIGS. The same components as those in FIGS. 10 to 17 are denoted by the same reference numerals, and the description will not be repeated.

First, as shown in FIGS. 1 to 5, the rear panel 2 is formed of a synthetic resin. The rear panel 2 has a substantially rectangular outer peripheral frame portion 2a and a vertical central plate portion 2b. It is configured as a single piece that is integrally molded. Then, the center plate portion 2b has two front and rear ends substantially at the center of the upper and lower ends of the center plate portion 2b.
An elastic locking piece 4 having locking claws 42 at four positions near four corners on the front surface of the outer peripheral frame portion 2a (on the side of the mounting surface to the rear chassis).
3 are integrally formed in a vertically symmetrical manner such that the locking claws 42 face each other from above and below. On the upper and lower sides of the front surface of the outer peripheral frame portion 2a, inside the pair of left and right elastic locking pieces 43, each pair having a small ridge 44,
A total of four ribs 45 are integrally formed vertically symmetrically so that these ribs 45 are opposite to each other. Further, an outer peripheral rib 46 is appropriately formed integrally with the front surface of the outer peripheral frame portion 2a at a position avoiding the elastic locking piece 43 and the rib 45. Further, a plurality of through holes 39 similar to those described above are formed in the outer peripheral plate portion 2b.

As shown in FIGS. 1 to 5, a rear chassis 10 made of sheet metal has a pair of upper and lower dowel holes each having a round hole and a long hole having a large diameter in the vertical direction at substantially the center of the upper and lower ends. 47 are formed. And this rear chassis 10
At the four corners at the upper and lower ends, four locking pieces 48 which are horizontally bent at the front side (the mounting surface side to the main chassis) are formed, and these locking pieces 48 have locking claw engaging portions. Is formed. And, as before,
A pair of dowels 2 are provided on the outer side of the left and right side pieces 10a vertically bent to the front side of the rear chassis 10.
4 is formed by press working. In addition, the tip of each of the left and right side pieces 10a has a taper 10 inclined inward.
c is formed. A pair of upper and lower projecting pieces 10b, which are horizontally bent toward the front side, are formed in the center of the upper and lower ends of the rear chassis 10, and screw holes 34 are formed in these projecting pieces 10b. ing. A plurality of printed circuit board mounting pieces 50 are integrally formed on the front side of the rear chassis 10, and the printed circuit board 17 is vertically mounted on the front side of these printed circuit board mounting pieces 50 by a plurality of screws 18 as described above. The screw is detachably fixed in parallel. The rear chassis 10 also has a plurality of through holes 39 facing the plurality of through holes 39 of the rear panel 2, and a plurality of connectors 35, terminals 36, switches 37, and light emitting devices mounted on the printed circuit board 17. A diode 38 penetrates through holes 39 and protrudes rearward of rear panel 2 (in a direction opposite to the main chassis). A plurality of screw holes 51 and a plurality of printed circuit board 1
A positioning dowel 52 and the like 7 are formed.

Then, as shown in FIGS. 1, 7 to 9,
A pair of four L-shaped cutouts 53 are formed at the rear end of the left and right side pieces 9a of the main chassis 9 in total. These L-shaped notches 53 are horizontally cut forward from the rear ends of the left and right side pieces 9a, and are cut vertically downward from the front ends of the horizontal notches 53a. It is formed substantially L-shaped by the vertical notch 53b. The left and right side pieces 9a of the main chassis 9 are formed with a pair of left and right screw holes 31 as described above. And the main chassis 9 and the rear chassis 1
The zero screw insertion hole 26 and the screw hole 28 are formed as necessary, but the screw insertion hole 26 and the screw hole 28 are not necessarily required.

Next, the order of assembling the case 5 will be described.
First, as shown in FIGS. 1 and 2, when connecting the rear panel 2 to the rear surface of the rear chassis 10, these two dowels 41 are fitted into the two dowel holes 47 from the rear, The rear panel 2 is attached to the rear chassis 10 by a one-touch operation of simply fitting the four locking claws 42 into the notches 49 of the four locking pieces 48 at the same time from behind using the elasticity of the elastic locking pieces 43. It is parallel to the back and can be detachably connected with high precision.

Next, as described above, the printed circuit board 17 is screwed to the front surface of the rear chassis 10, and the printed circuit board 17 and the connectors 21 and 22 of the printed circuit board 20 screwed to one side surface of the main chassis 9 are connected. Are detachably connected to each other by a flexible printed circuit board 23, and the flexible printed circuit board 23 is folded into a substantially Z-shape against elasticity, and as shown in FIG. Chassis 9
Of the left and right side pieces 9a from behind. On this occasion,
Taper 10 formed at the tip of left and right side pieces 10a
By the guiding action of c, the left and right side pieces 10a can be smoothly inserted into the inside of the left and right side pieces 9a in a state where there is almost no play, with high precision.

At this time, a total of four dowels 24 of the rear chassis 10 are inserted horizontally from the rear into the horizontal notches 53a of the four L-shaped notches 53 of the main chassis 9 in the direction of arrow a and simultaneously. insert. And after this,
The rear chassis 10 is lowered vertically in the direction of arrow b below the main chassis 9, and the four dowels 24 are dropped into the vertical notches 53 b of the four L-shaped notches 53.

Then, the four dowels 24 are mechanically locked in the vertical cutouts 53b of the four L-shaped cutouts 53, and the arrow c which is rearward on the rear chassis 10 due to the repulsive force of the flexible printed circuit board 23 or the like. In order to prevent the dowel 24 from dropping from the vertical notch 53b in the direction of arrow c, which is rearward, even if a tensile force in the
Can be mechanically held on the main chassis 9.

Therefore, after that, when the rear chassis 10 is screwed to the main chassis 9 from both left and right sides by the two screws 27 as described above, the rear chassis 10 is fixed to the rear end of the main chassis 9 by a jig or the like. There is no need to strongly press the screw 27 one by one from the direction of the arrow a, and the work of fixing the screw 27 can be performed extremely easily, and workability is remarkably improved. Since the rear chassis 10 does not easily fall off from the main chassis 9 in the direction of the arrow c, the structure of fastening the main chassis 9 and the rear chassis 10 with the two screws 27 is abolished. It is also possible to reduce the number of parts and the number of assembling steps.

Finally, the upper and lower covers 3 and 4 are fitted on the upper and lower sides of the main chassis 9 in the same manner as described above, and the upper and lower ends 3a and 4a of the upper and lower covers 3 and 4 are connected to the main chassis 9 as described above.
And the central part of the top plate 3b and the bottom plate 4b of the upper and lower covers 3, 4 is detachably screwed to the upper and lower ends of the rear chassis 10 with the screws 33. , The assembly of the case 5 can be completed.

At this time, as shown in FIG. 6, when the central portions of the top plate 3b and the bottom plate 4b of the upper and lower covers 3, 4 are fastened by screws 33 in the vertical direction of arrow d, these top plates 3b Further, the small projections 44 of the total of four ribs 45 of the rear panel 2 can be pressed against the elasticity in the direction of arrow d by the bottom plate 4b. And the arrow d of these ribs 45
The rear panel 2 and the rear chassis 1
Assembling a high-quality case 5 in which the rear panel 2 can be firmly tightened so that no rattling occurs and the rear panel 2 is not screwed at all to the rear chassis 10 without any rattling. Can be.

According to the CCD video camera configured as described above, the rear panel 2 is composed of a single part made of synthetic resin, and the number of parts and the number of assembling steps are small, and the cost is low. Rear panel 2 to rear chassis 10
The rear panel 2 can be easily attached and detached with a single touch by the dowel 41 and the locking claw 42, so that the rear panel 2 can be easily attached and detached, and the process organization has a high degree of freedom, and maintenance, inspection, repair, and the like are easy. I can do it. Since screws for connecting the rear panel 2 to the rear chassis 10 are unnecessary, the number of screws used can be reduced, and the type of screws can be unified by eliminating the need for tapping screws. The workability of the stop can be improved. Since there is no need for screws for connecting the rear panel 2 to the rear chassis 10 from outside, there is no danger that the rear panel 2 will be accidentally removed and parts will fall off, causing a short circuit or electric shock on the wiring. Very high security. By simply removing the upper and lower covers 3 and 4, the rear panel 2 and the rear chassis 10 can be easily dropped off, and the workability of maintenance, inspection, repair and the like is high.

Since the rear chassis 10 does not easily fall backward from the main chassis 9 by the repulsive force of the flexible printed circuit board 23 connecting the printed boards 17 and 20,
When the screws are attached to the main chassis 9, the upper and lower covers 3,
When fixing the rear chassis 4 to the rear chassis 10 with the screws 33, the rear chassis 10 does not need to be held by a jig or the like, and these screws can be easily fixed. When the left and right side pieces 10a of the rear chassis 10 are inserted into the inside of the left and right side pieces 9a of the main chassis 9 from behind, the taper 10c inserts the pieces smoothly and with high precision so that there is almost no play. Can be. In a state where the dowel 24 of the rear chassis 10 is dropped into the vertical notch 53b of the L-shaped notch 53, the dowel 24 can be mechanically held extremely strongly in the vertical notch 53b. Even if the rear chassis 10 is not screwed to the main chassis 9 with the screws 27, the rear chassis 10 becomes extremely strong against the pulling force in the direction of the arrow c, which is behind the rear chassis 10. Therefore, even when a strong pulling force is applied to the rear chassis 10 in the direction of arrow c, for example, when the cable falls off the connector 35, there is no danger of the rear chassis 10 being accidentally dropped. A robust structure can be realized, and the safety and durability are very high.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made based on the technical concept of the present invention. For example, the present invention is not limited to a CCD video camera, but can be applied to other various video cameras.

[0026]

The video camera of the present invention configured as described above has the following effects.

According to a first aspect of the present invention, a plurality of dowels and locking claws integrally formed on a rear panel made of synthetic resin are fitted into a plurality of dowel holes and locking claw engaging portions formed on a sheet metal rear chassis. , So that the rear panel can be detachably connected to the rear chassis with one touch,
The attachment / detachment can be performed extremely easily, and the degree of freedom of the process organization and the workability of maintenance, inspection, repair, and the like can be significantly improved. Since the rear panel is a single part and does not require multiple screws to fix the rear panel to the rear chassis, the number of parts, assembly steps, and the number of screws used for the entire video camera are significantly reduced. Thus, the cost can be significantly reduced. Just like screws that fix the rear panel to the rear chassis from the outside, screws can be accidentally removed and parts can be accidentally dropped off, and dangers such as short-circuiting of wiring and electric shock can be prevented beforehand. Very high.

According to a second aspect of the present invention, a plurality of dowels formed on both sides of the rear chassis are detachably dropped into a plurality of L-shaped notches formed on the rear ends of both sides of the main chassis so as to be substantially L-shaped. Since the rear ends of the top and bottom plates of the upper and lower covers are detachably screwed to the upper and lower ends of the rear chassis, screws for fixing the rear chassis to the main chassis are omitted, and low cost due to reduction in the number of parts and assembly man-hours? In addition, when the upper and lower covers are screwed to the rear chassis, there is no need to hold down the rear chassis with a jig or the like so that the rear chassis does not fall back from the main chassis.
The workability of the screwing can be significantly improved.
The dowels on the rear chassis are replaced with the L on the main chassis.
The rear chassis drops off from the main chassis even if a strong pulling force acts on the rear chassis when connecting / disconnecting cables to the rear chassis connector from the rear by dropping into the L-shaped part in the mold notch. Since the rear chassis can be mechanically and firmly fixed to the main chassis, a very robust structure can be realized, and the safety and durability can be significantly improved.

According to a third aspect of the present invention, a plurality of dowels and locking claws integrally formed on the rear panel are detachably fitted to a plurality of dowel holes and locking claw engaging portions formed on the rear chassis. The plurality of dowels formed are dropped into a plurality of L-shaped cutouts formed at the rear ends of both sides of the main chassis so as to be detachable and substantially L-shaped, and are locked. When detachable screws were attached to the upper and lower ends of the chassis, the ribs integrally formed on the upper and lower sides of the rear panel were pressed from above and below by the rear ends of the top and bottom covers of the upper and lower covers, so the rear panel and rear chassis were Even when screws are not fixed to the chassis, rattling of the rear panel and the rear chassis can be eliminated, and a high-quality video camera can be realized.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main part of a CCD video camera to which the present invention is applied.

FIG. 2 is a view for explaining a connection structure of a rear panel and a rear chassis of the CCD video camera.

FIG. 3 is a perspective view of a rear chassis of the CCD video camera.

FIG. 4 is a perspective view of a rear panel of the CCD video camera.

FIG. 5 is a view illustrating an engagement structure between a rear panel and a rear chassis of the CCD video camera.

FIG. 6 is a view showing a combined state of a rear panel and a rear chassis of the CCD video camera.

FIG. 7 is a view showing a state before assembling a rear chassis to a main chassis of the CCD video camera according to the first embodiment;

FIG. 8 is a view showing a start of assembling a rear chassis to a main chassis of the CCD video camera.

FIG. 9 is a view showing the completion of assembling the rear chassis to the main chassis of the CCD video camera.

FIG. 10 is a side view of one side of a CCD video camera developed earlier by the applicant of the present invention.

FIG. 11 is another side view of the CCD video camera.

FIG. 12 is a plan view of the above CCD video camera.

FIG. 13 is a bottom view of the above CCD video camera.

FIG. 14 is a front view and a rear view of the CCD video camera.

FIG. 15 is a diagram illustrating a composite structure of a rear panel of the CCD video camera and a structure of connecting the rear panel to a rear chassis.

FIG. 16 is a view for explaining a connection structure of a rear chassis to a main chassis of the above CCD video camera.

FIG. 17 is a view for explaining a coupling structure of a rear panel and a rear chassis of the CCD video camera.

[Explanation of symbols]

2 is a rear panel, 3 is an upper cover, 4 is a lower cover, 5 is a case, 9 is a main chassis, 9a is a right and left side piece of the main chassis, 10 is a rear chassis, 10a is a right and left side piece of the rear chassis, and 10b is a rear chassis. Projecting pieces at the upper and lower ends of the printed circuit board, 17, 18 are printed circuit boards, 23 is a flexible printed circuit board, 24 is a dowel of the rear chassis, 42 is a locking claw of the rear panel, 45 is a rib of the rear panel, 47 is a dowel hole of the rear chassis, 49 Is a notch which is a locking claw engaging portion of the rear chassis; 53 is an L-shaped notch of the main chassis;
a is a horizontal notch of the L-shaped notch, and 53b is a vertical notch of the L-shaped notch.

Claims (3)

[Claims] 1. A rear panel made of synthetic resin and a rear chassis made of sheet metal, wherein a plurality of dowels and locking claws formed integrally with the rear panel are provided in a plurality of dowel holes and a plurality of engagement holes formed in the rear chassis. A video camera, wherein a rear panel is detachably connected to a rear chassis by being fitted to a pawl engaging portion. 2. A vehicle comprising a sheet metal rear chassis, a sheet metal main chassis, and a sheet metal upper and lower cover, wherein a plurality of dowels formed in the rear chassis are formed by a plurality of Ls formed in the main chassis. A video camera characterized in that it is detachably dropped into a mold notch and locked, and a top plate and a bottom plate of the upper and lower covers are detachably screwed on and under the rear chassis. 3. A rear panel made of synthetic resin, a rear chassis made of sheet metal, a main chassis made of sheet metal, and upper and lower covers made of sheet metal. Claws are fitted into a plurality of dowel holes and locking claw engagement portions formed in the rear chassis, and a rear panel is detachably connected to the rear chassis. The plurality of dowels formed in the rear chassis are connected to the main chassis. When a plurality of L-shaped notches formed in the chassis are detachably dropped into substantially L-shapes and locked, and the top plate and the bottom plate of the upper and lower covers are detachably screwed on and under the rear chassis. A video camera wherein a plurality of ribs integrally formed on the upper and lower sides of the rear panel are pressed from above and below by a top plate and a bottom plate of the upper and lower covers.