JP5805549B2 - Camera inspection mechanism - Google Patents

Description

  The present invention relates to a camera inspection mechanism, and more particularly to maintenance of a surveillance camera installed on a ceiling.

  Surveillance cameras such as CCTV (Closed-Circuit TeleVision) cameras are often installed at high places such as the ceiling. Workers who inspect surveillance cameras approached surveillance cameras installed on the ceiling using a large stepladder, a ladder with a handrail, or an aerial work platform.

JP 2003-262902 A Japanese Patent Laid-Open No. 10-325981

  However, in order to move to the position of the surveillance camera at a high place for inspection, it is necessary to prepare a scaffold such as a tool or a machine that is not always convenient to carry. In addition, the inspection work at high altitude had a safety problem.

  An object of the present invention is to enable inspection work of a camera installed on a ceiling without moving to a high place.

The camera inspection mechanism according to the present invention includes a long rod used by an operator under the ceiling, a cable that passes through an opening provided in the ceiling and suspends a camera installed on the ceiling from the back of the ceiling, and a ceiling surface. An operating part to which the long bar is connected, and a winding mechanism installed on the back of the ceiling and connected to the operating part through a through hole provided in the ceiling, using the long bar The camera is lowered from the ceiling by lowering the cable in response to the operation part being operated in the first direction, and the operation part is different from the first direction by using the long bar. A winding mechanism that raises the camera in the ceiling direction by winding the cable in response to being operated in two directions, and the winding mechanism winds or unwinds the cable. The turtle A reel for lifting from the ceiling, has a linkage portion that links and said and said operating portion reel, the cable to the camera at a position opposed to the ceiling surface in a state where the camera is suspended A direction of the camera mounted in a direction perpendicular to the axis of the reel when the camera is suspended through the hollow camera base and the camera is installed on a ceiling. Further, the camera base is formed to be large so as to close the opening having a length from the outer peripheral portion to the center of the reel.

  Further, the winding mechanism lowers the camera from the ceiling by lowering the cable according to the operation part being rotated in the first direction by connecting the tip of the long bar, The tip of the long bar is connected and the camera is raised in the ceiling direction by winding up the cable in response to the operation portion being rotated in a second direction opposite to the first direction. Features.

In addition, when the base portion of the camera is formed in the same size as the opening, a stopper is provided on the ceiling to prevent the camera from being rolled up above the ceiling when the cable is wound up. characterized in that was.

  Further, the cable is formed integrally with a power line of the camera.

  In addition, the camera has a fall prevention mechanism for preventing the camera from dropping under its own weight.

  According to the present invention, the surveillance camera can be inspected without moving to the installation position of the camera installed on the ceiling.

It is the schematic perspective view which showed one Embodiment of the camera inspection mechanism which concerns on this invention. It is a front view of the camera inspection mechanism shown in FIG. It is a side view of the camera inspection mechanism shown in FIG. It is a top view of the camera inspection mechanism shown in FIG. It is a figure when looking up at the ceiling in which the camera inspection mechanism shown in FIG. 1 was installed from the downward direction. It is the perspective view which showed the external appearance of the elongate stick used in this Embodiment. It is a figure for demonstrating an effect | action of the camera inspection mechanism in this Embodiment. It is a figure for demonstrating an effect | action of the camera inspection mechanism in this Embodiment. It is the perspective view which showed the through hole of the other shape opened in a ceiling in this Embodiment. It is the perspective view which showed the opening part opened to a ceiling in this Embodiment. It is a side view of a camera inspection mechanism when the opening part shown in FIG. 10 is provided in the ceiling.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view showing an embodiment of a camera inspection mechanism according to the present invention. 2 and 4 are a front view, a side view, and a plan view of the camera inspection mechanism shown in FIG. 1, respectively. Furthermore, FIG. 5 is a view when the ceiling on which the camera inspection mechanism according to the present embodiment is installed is looked up from below.

  When performing maintenance and inspections such as cleaning the lens of a surveillance camera installed at a high place on the ceiling, the surveillance camera is conventionally fixed to the ceiling, so workers can use large ladders or ladders with handrails. Etc. and moved to high places. In this embodiment, the surveillance camera is installed so that it can be raised and lowered without being fixed to the ceiling, and at the time of inspection, the surveillance camera can be lowered and inspected. That is, the present embodiment is characterized in that the surveillance camera is installed so as to be movable up and down with respect to the ceiling.

  First, the structure of the camera inspection mechanism in the present embodiment will be described with reference to FIGS.

  A through hole 6 is provided in the ceiling 4 on which the surveillance camera 2 is installed, and the surveillance camera 2 is suspended from the ceiling 4 by a cable 10 passing through the through hole 6. The base 8 of the monitoring camera 2 has a hollow shape, and the cable 10 is connected to the monitoring camera 2 through the base 8. During the operation of the surveillance camera 2, the base 8 of the surveillance camera 2 comes into contact with the ceiling 4 and covers the through hole 6 when the cable 10 is wound up, so that the surveillance camera 2 seems to be fixed to the ceiling 4. . The cable 10 is integrally formed with the power line and communication line of the monitoring camera 2.

  An operation site 12 is provided in the vicinity of the monitoring camera 2 on the surface of the ceiling 4. The operation part 12 is fitted in a through hole 7 provided in the ceiling 4. The operation portion 12 is provided so as to be rotatable along the surface direction of the ceiling 4 while being fitted in the through hole 7. An I-shaped groove is formed on the surface of the operation site 12 to which the tip of a long bar used by an operator is connected under the ceiling.

  On the other hand, a winding mechanism for winding up and down the cable 10 is installed on the back of the ceiling as described below. First, a pair of shaft supports 14 and 16 that support the shaft 5 are erected at positions facing each other with the through hole 6 interposed therebetween. A reel 18 centering on the shaft 5 and a helical gear (worm wheel) 22 of the worm gear 20 are arranged between the shaft supports 14 and 16. The cable 10 is wound around the reel 18. One end of the cable 10 hanging from the reel 18 is connected to the surveillance camera 2 through the through hole 6 and indoors. At the other end of the cable 10, at least the power line and the communication line included in the cable 10 pass through the center of the reel 18 and the shaft portion supported by the shaft support 14, and are connected to the control device of the monitoring camera 2. .

  Further, a shaft support 24 and a bearing table 26 are provided upright in a direction orthogonal to the shaft supports 14 and 16. A screw gear (worm) 30 of the worm gear 20 with the shaft 28 supported by the shaft support 24 and the bearing table 26 as an axis is disposed between the shaft support 24 and the bearing table 26. One end side of the shaft 28 is pivotally supported by the shaft support 24. A bevel gear 32 is attached to the other end side of the shaft 28 at a point penetrating the bearing base 26. The other bevel gear 34 paired with the bevel gear 32 is centered on a connecting rod 36 connected to the back surface of the operation portion 12. As described above, the reel 18 and the operation portion 12 are linked through the shaft 5, the worm gear 20, the shaft 28, the bevel gears 32 and 34, and the connecting rod 36 included in the linkage portion.

  The winding mechanism shown in FIGS. 1 to 4 is installed on the back of the ceiling, but when the ceiling 4 is looked up from the indoor side, the operation site is located near the monitoring camera 2 and the monitoring camera 2 as shown in FIG. 12 will be visible.

  FIG. 6 is a perspective view showing a configuration example of the long bar 40 used in the present embodiment. As will be described later, the worker of the surveillance camera 2 uses the long bar 40 while standing on the floor and connecting to the operation portion 12 provided on the ceiling 4. That is, the long bar 40 is formed with a length that can be reached by the worker standing on the floor and reaching the ceiling 4. In FIG. 6, a part of the long bar 40 is omitted. A main body portion 42 of the long bar 40 is formed of a hollow tube, and a thin bar 44 penetrates the inside of the main body portion 42. At the tip of the thin bar 44, a T-shaped connecting part 46 including an end bar connected to the groove of the operation site 12 is formed. On the other hand, an operation portion 48 formed by bending is formed at the other end portion of the thin bar 44. The operation unit 48 includes a grip 50 that is gripped by an operator, and an end 52 that prevents the grip 50 from falling off the thin rod 44.

  Next, the operation in this embodiment will be described with reference to FIGS. 1 to 6 and FIGS. 7 and 8. FIG.

  The surveillance camera 2 is normally positioned with the base 8 in contact with the ceiling 4 as shown in FIG. In other words, the winding mechanism winds up the cable 10 so that the base 8 is in contact with the ceiling 4. In the present embodiment, the worm gear 20 is used to prevent the surveillance camera 2 from dropping due to its own weight. Of course, another fall prevention mechanism such as a hydraulic circuit may be used to prevent the fall.

  Here, for maintenance and inspection such as cleaning of the lens, the worker holds the main body portion 42 of the long bar 40 brought in with one hand and the holding portion 50 with the other hand. Then, the connecting portion 46 of the long bar 40, more specifically, the short bar portion forming the T-shaped head is fitted into the groove of the operation site 12 near the surveillance camera to be inspected. In this fitted state, the worker turns the grip 50 in the clockwise direction as indicated by the arrow A in the example shown in FIG. Accordingly, when the connecting portion 46 rotates in the clockwise direction, the rotational power in the horizontal direction becomes the rotational power in the vertical direction with respect to the ceiling 4 via the operation portion 12, the connecting rod 36, and the bevel gears 34 and 32. Is transmitted to the worm gear 20. The reel 18 fixed to the same shaft as the helical gear 22 of the worm gear 20 is rotated counterclockwise as indicated by an arrow B in the drawing by this power. As a result of this rotation, the cable 10 wound around the reel 18 is lowered, and the surveillance camera 2 with the base 8 in contact with the ceiling 4 descends from the ceiling 4 as indicated by an arrow C.

  When the surveillance camera 2 descends to a height convenient for inspection, the worker stops the hand that is turning the grip 50 of the long bar 40. In the present embodiment, the worm gear 20 is used so that when the operation portion 12 stops rotating, the surveillance camera 2 stops at that position. Of course, other locking mechanisms may be used so that the cable 10 does not loosen when not operated and the surveillance camera 2 stays securely in the lowered position.

  After the inspection is completed, the worker holds the main body portion 42 of the long bar 40 brought in with one hand and the grip portion 50 with the other hand in the same manner as when the surveillance camera 2 is lowered, and the connecting portion 46. Is fitted into the groove of the operation part 12 in the vicinity of the surveillance camera to be inspected. In this fitted state, the worker turns the grip 50 in a direction different from that when the surveillance camera 2 is lowered, that is, in the counterclockwise direction indicated by the arrow D in FIG. In response to this, when the connecting portion 46 rotates counterclockwise, the rotational power in the horizontal direction with respect to the ceiling 4 becomes the rotational power in the vertical direction via the operation portion 12, the connecting rod 36, and the bevel gears 34 and 32. Is transmitted to the worm gear 20. The reel 18 fixed to the same shaft as the helical gear 22 of the worm gear 20 is rotated clockwise as indicated by an arrow E in the drawing by this power. By this rotation, the cable 10 is wound up and wound around the reel 18. In response to this, the surveillance camera 2 rises in the direction of the ceiling 4 as indicated by the arrow F, and finally the base 8 of the surveillance camera 2 comes into contact with the ceiling 4 as shown in FIG. . When it is confirmed that the base 8 of the monitoring camera 2 has come into contact with the ceiling 4 and returned to the original position, the worker stops the hand turning the grip 50 of the long bar 40.

  In the present embodiment, as described above, the inspection work of the monitoring camera 2 can be performed without moving the worker to a high place where the monitoring camera 2 is installed.

  By the way, the size of the through hole 6 provided as the opening may be as large as the cable 10 passes. If the cross section of the cable 10 is circular, the shape of the through hole 6 may be circular. However, as the surveillance camera is lowered, the position where the cable 10 hangs down from the reel 18 approaches the center from the outer peripheral portion of the reel 18, so that the cable 10 comes into contact with the through hole 6. That is, since the cable 10 moves up and down while rubbing the ceiling 4, there is a possibility that the cable 10 and the ceiling 4 may be damaged.

  Therefore, for example, as shown in FIG. 9, the through hole 9 is formed in a rectangle having a long side from the outer peripheral portion of the reel 18 to the center. By doing so, the cable 10 does not contact the through hole 9 even when the position of the cable 10 hanging from the reel 18 approaches the center of the reel 18 as the surveillance camera is lowered. However, in this case, the through hole 9 can be seen from the room. In order to make the entire through hole 9 invisible from the room, some kind of contrivance is required, such as forming the base 8 of the monitoring camera 2 large enough to close the through hole 9.

  Therefore, for example, as shown in FIGS. 10 and 11, the opening 11 is formed by cutting a part of the ceiling 4 into a rectangular shape. The length of the side of the opening 11 orthogonal to the axis is at least the length from the outer peripheral portion of the reel 18 to the center. Then, a closing plate 13 that is substantially equal to the size of the opening 11 and closes the opening 11 is provided. Then, the base 8 of the monitoring camera 2 is fixed to the closing plate 13. The closing plate 13 is formed with a through hole 17 through which the cable 10 passes in order to connect a power line or the like to the monitoring camera 2.

  In the configuration shown in FIGS. 10 and 11, when the monitoring camera 2 is lowered, the monitoring camera 2 and the closing plate 13 are lowered integrally. On the other hand, when the lowered surveillance camera 2 is raised, the opening (through holes 6 and 9) shown in FIGS. 1 and 9 can be rolled up when the base 8 of the surveillance camera 2 hits the ceiling 4 However, in the case of the opening 11 shown in FIG. 10, there is a possibility that the surveillance camera 2 is rolled up to the height of the ceiling 4 or more. Therefore, in the present embodiment, the stopper 15 is provided on the back side of the ceiling of the opening 11 in order to prevent the surveillance camera 2 from being rolled up beyond the height of the ceiling 4.

  In the present embodiment, as the first direction in which the monitoring camera 2 is lowered from the ceiling 4, the worker is caused to rotate the grip 50 in the clockwise direction. Accordingly, by rotating the reel 18 counterclockwise on the drawing and lowering the cable 10, the operator can check the surveillance camera 2 without moving it to a high place. On the other hand, as the second direction in which the surveillance camera 2 is raised in the direction of the ceiling 4, the grip portion 50 is rotated counterclockwise. Thereby, the surveillance camera 2 can be returned to the original position without causing the worker to move to a high place by rotating the reel 18 in the clockwise direction and winding up the cable 10 in the drawing.

  Note that the operation direction of the operation portion 12 is not limited to this, and may be appropriately determined depending on the direction of the thread groove of the worm gear 20.

  In the present embodiment, in order to move the cable 10 up and down, an umbrella is used to change the rotation in the axial direction orthogonal to the ceiling 4 (rotation of the operation portion 12) to the rotation in the axial direction parallel to the ceiling 4. Although the gears 32 and 34 are used, other means such as a flexible shaft may be used.

  Moreover, in this Embodiment, since the raising / lowering of the monitoring camera 2 was enabled manually instead of an electric type, an inspection mechanism can be implement | achieved cheaply. In addition, the long bar 40 is used in order to obtain an inexpensive manual type, but the long bar 40 may have a structure that can be expanded and contracted according to the height to the ceiling 4. Further, since the structure shown in FIG. 6 is used, the connecting portion 46 is rotated by turning the gripping portion 50. However, for example, the connecting portion 46 may be rotated in different operations or operation directions. . Alternatively, the long bar 40 may be electrically operated.

  In the present embodiment, the cable for suspending the monitoring camera 2 and the power line and communication line of the monitoring camera 2 are integrally formed. It is necessary to prepare a reel for winding the wire.

  2 Surveillance cameras, 4 ceilings, 5, 28 axes, 6, 7, 9, 17 through holes, 8 units, 10 cables, 11 openings, 12 operation parts, 13 closing plates, 14, 16, 24 axis abutments, 15 Stopper, 18 reel, 20 worm gear, 22 helical gear, 26 bearing base, 30 screw gear, 32, 34 bevel gear, 36 connecting rod, 40 long rod, 42 main body, 44 thin rod, 46 connecting portion, 48 Operation part, 50 gripping part, 52 end.

Claims (5)

A long bar used by workers under the ceiling;
A cable that hangs a camera installed on the ceiling from the back of the ceiling through an opening provided in the ceiling,
An operation part provided on the ceiling surface and connected to the long bar;
A winding mechanism installed on the back of the ceiling and connected to the operation part through a through hole provided in the ceiling, wherein the operation part is operated in the first direction using the long bar. Accordingly, the camera is lowered from the ceiling by lowering the cable, and the cable is wound up in response to the operation portion being operated in a second direction different from the first direction using the long bar. A winding mechanism that raises the camera in the ceiling direction by
Have
The winding mechanism is
A reel that raises or lowers the camera from the ceiling by winding or lowering the cable;
A linkage portion for linking the operation portion and the reel;
Have
The cable is a base of the camera attached to the camera at a position facing the ceiling surface when the camera is suspended, and the camera is suspended through the hollow base of the camera. Lowered,
Forming the camera base large so as to close the opening having a length from the outer peripheral portion of the reel to the center in a direction perpendicular to the axis of the reel when the camera is installed on the ceiling; Features a camera inspection mechanism. The camera inspection mechanism according to claim 1,
The winding mechanism lowers the camera from the ceiling by lowering the cable in response to rotation of the operation portion in the first direction by connecting the distal end of the long bar, and The camera is raised in the ceiling direction by winding up the cable in response to rotation of the operation part in a second direction opposite to the first direction by connecting the tip of the shaving bar. Camera inspection mechanism. The camera inspection mechanism according to claim 1,
When the base portion of the camera is formed in the same size as the opening, a stopper is provided on the ceiling to prevent the camera from being rolled up above the height of the ceiling when the cable is wound up. A camera inspection mechanism. The camera inspection mechanism according to claim 1,
The camera inspection mechanism, wherein the cable is formed integrally with a power line of the camera. The camera inspection mechanism according to claim 1,
A camera inspection mechanism comprising a fall prevention mechanism for preventing the camera from falling under its own weight.

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