JP2008058805A - Monitor camera device and swivel base - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitor camera device that has a simple structure and an improved reliability in the rotation of a camera, such as a video camera or still camera in pan direction or tilt direction according to each rotating direction of a motor serving as a single rotating drive source, and to provide a swivel base. <P>SOLUTION: In the monitor camera device 10A, when a worm gear 24 is normally rotated, the worm gear 24 rotates a camera 17, mounted on the bracket 15 side, in the pan direction (or the tilt direction), while making a first gear 14 turn integrally with a bracket 15 around a fixed shaft 12 by the action of a first one-way clutch 13. When a second gear 22 is idly rotated and the worm gear 24 is rotated in reverse, the first gear 14 is rotated idly. Meanwhile, a rotating shaft 20 is rotated integrally with the second gear 22 by the action of a second one-way clutch 21, thereby rotating the camera 17 in the tilt direction (or the pan direction). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a surveillance camera device configured to be able to rotate a camera such as a video camera or a still camera in a pan direction and a tilt direction in accordance with each rotational direction of a single rotational drive source that rotates forward and backward. And a swivel.

  In general, in a surveillance camera device applied to an alarm system for crime prevention / disaster prevention, a camera such as a video camera or a still camera which is a video signal input device is attached to a housing, and this camera is used as a pan direction rotation drive source. The pan motor is rotated in the pan direction that is substantially parallel to the horizontal plane of the housing, and the tilt motor that is the tilt direction rotational drive source is rotated in the tilt direction that is substantially perpendicular to the horizontal plane. However, in this case, the camera is rotated independently in the pan and tilt directions by using two motors, a pan motor and a tilt motor. Can be made.

  As described above, in order to save space and save power for a general surveillance camera device having two motors, according to each rotation direction of one motor serving as a single rotational drive source. There is a pan head camera (surveillance camera device) that can rotate a camera such as a video camera or a still camera in a pan direction and a tilt direction (see, for example, Patent Document 1).

In the case of the pan / tilt head camera described in Patent Document 1, the camera cannot be rotated in the pan direction and the tilt direction at the same time, but the camera is moved from the pan direction to the tilt direction by switching the rotation direction of one motor. Alternatively, it is possible to sequentially switch from the tilt direction to the pan direction, and it is possible to function as a surveillance camera device even in such usage.
JP 2005-148456 A

  FIG. 9 is a perspective view showing a conventional camera platform.

  The conventional pan head camera 100 shown in FIG. 9 is disclosed in the above-mentioned Patent Document 1 (Japanese Patent Laid-Open No. 2005-148456), and will be described briefly with reference to Patent Document 1.

  As shown in FIG. 9, in the conventional pan head camera 100, a camera 101 such as a video camera or a still camera is attached to the tilt mechanism section 120 described later.

  A sun gear 103 is fixed to the output shaft of one motor 102 serving as a single rotational drive source, and the planetary gear 104 can roll along the sun gear 103.

  A pan mechanism 110 for rotating the camera 101 in the pan direction is attached to a gear 111 that meshes with the planetary gear 104 when the motor 102 rotates in the forward direction, and a rotation shaft 112 of the gear 111. A belt mechanism 114 that engages with the pan-centric clutch 113 when the rotating shaft 112 rotates at a low speed, and a pan-centered clutch 113 when the rotating shaft 112 rotates at a high speed. The gear mechanism 115 is configured to be engaged with the belt mechanism 114 or the bevel gear 116 for converting the rotational direction of the driving force transmitted from the gear mechanism 115 by 90 degrees and the pan rotating bevel gear 117.

  The tilt mechanism 120 for rotating the camera 101 in the tilt direction is attached to a gear 121 that meshes with the planetary gear 104 when the motor 102 rotates in the reverse direction, and a rotation shaft 122 of the gear 121. A belt mechanism 124 that engages with the tilt center clutch 123 when the rotation shaft 122 rotates at a low speed, and a tilt center clutch 123 when the rotation shaft 122 rotates at a high speed. The gear mechanism 125 that meshes, the tilt transmission mechanism portion that has the gear 128 that meshes the driving force transmitted from the belt mechanism 124 or the gear mechanism 125 with the final tilt rotation gear 126 or the gear 127, and the gear that is attached to the tilt rotation shaft 129. 126, a gear 127 meshing with the gear 126, and a gear Is composed of a 28 and a gear 126 or the tilt switch mechanism unit and the camera 101 attached to the tilt rotation shaft 129 comprising a switch 130 for switching to mesh with the gear 127.

  With the above configuration, the camera 101 rotates in the pan direction when one motor 102 rotates forward, while the camera 101 rotates in the tilt direction when one motor 102 rotates reversely.

  By the way, according to the conventional pan head camera 100 described above, since a single motor 102 is used, the camera 101 such as a video camera or a still camera cannot be rotated simultaneously in the pan direction and the tilt direction. However, it is disclosed that space saving and power saving can be achieved.

  However, in the conventional pan head camera 100 described above, when the planetary gear 104 rolls along the sun gear 103 attached to the output shaft of the single motor 102 and the motor 102 rotates forward, There is provided a planetary gear mechanism portion comprising a meshing gear 111 and a gear 121 that meshes with the planetary gear 104 when the motor 102 rotates in the reverse direction, and the pan mechanism clutch 110 and the tilt mechanism portion 120 are provided with a pan-centric clutch 113 and Since the tilt pan concentric clutch 123 is provided to switch between the low speed rotation and the high speed rotation of the motor 102, the structure of the conventional pan head camera 100 is complicated and the number of parts is large. There are problems that the camera platform camera 100 becomes expensive and disadvantageous in terms of component reliability.

  Therefore, when a camera such as a video camera or a still camera is rotated in the pan direction and tilt direction according to each rotation direction of a single rotational drive source that rotates forward and reverse, the structure is simple and the reliability is improved. Surveillance camera devices and swivels that can contribute are desired.

The present invention has been made in view of the above problems, and the invention according to claim 1 rotates the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward. In the surveillance camera device configured as described above,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
A second gear disposed orthogonally to the first gear and meshed with the worm gear, and is pivotally attached to the rotary shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates in the reverse direction. With gear,
A bracket attached to the rotating shaft integrally with the camera or a camera mounting member to which the camera is attached, a bracket to which the one rotational driving source is attached and rotatably supported by the fixed shaft;
A surveillance camera device characterized by comprising:

According to a second aspect of the present invention, in the surveillance camera device configured to rotate the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
It is arranged orthogonal to the first gear and meshes with the worm gear, and is pivotally attached to the rotating shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates reversely, A second gear having an eccentric cam groove;
The rotating shaft is attached, and the camera or a camera attachment member to which the camera is attached is rotatably attached, and a cam follower that follows the eccentric cam groove of the second gear is attached to the camera or the camera attachment member. And a bracket to which the one rotational drive source is attached and rotatably supported on the fixed shaft;
A surveillance camera device characterized by comprising:

According to a third aspect of the present invention, the camera mounting member for mounting the camera is provided, and the camera is rotated in the pan direction and the tilt direction in accordance with each rotational direction of one rotational drive source that rotates forward and backward. In the configured swivel,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
A second gear disposed orthogonally to the first gear and meshed with the worm gear, and is pivotally attached to the rotary shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates in the reverse direction. With gear,
The camera mounting member is mounted integrally with the rotating shaft, and the one rotational driving source is mounted and a bracket rotatably supported on the fixed shaft;
A swivel characterized by comprising:

Furthermore, the invention according to claim 4 includes a camera mounting member for mounting the camera, and rotates the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward. In the configured swivel,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
It is arranged orthogonal to the first gear and meshes with the worm gear, and is pivotally attached to the rotating shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates reversely, A second gear having an eccentric cam groove;
The rotating shaft is mounted, the camera mounting member is rotatably mounted, a cam follower that follows the eccentric cam groove of the second gear is mounted on the camera mounting member, and the one rotational drive source A bracket attached to the fixed shaft so as to be rotatable.
A swivel characterized by comprising:

  According to the surveillance camera device of claim 1 and claim 2, the surveillance camera is configured to rotate the camera in the pan direction and the tilt direction according to each rotational direction of one rotational drive source that rotates forward and backward. In the apparatus, a first gear fitted with a first one-way clutch in the center is axially attached to a fixed shaft suspended from a base, and a second gear fitted with a second one-way clutch in the center is first. The second gear is attached to a rotating shaft orthogonal to the fixed shaft by making it orthogonal to the gear, and the worm gear meshing with the rotating shaft and the first and second gears is fixed to the camera or the camera mounting member to which the camera is attached. By attaching to a brat that rotates around the shaft, the camera can be rotated in the pan and tilt directions with a simpler structure than the conventional example. Come, and can improve the reliability of the monitoring camera apparatus.

  According to the swivel of claim 3 and claim 4, the camera mounting member for mounting the camera is provided, and the camera is panned and tilted according to each rotational direction of one rotational drive source that rotates forward and reverse. In the swivel configured to rotate in the respective directions, the first gear fitted with the first one-way clutch in the center is axially attached to the fixed shaft suspended from the base, and the second one-way clutch is centered. The second gear fitted into the first gear is orthogonal to the first gear, and the second gear is attached to the rotary shaft orthogonal to the fixed shaft, and the worm gear meshing with the rotary shaft and the first and second gears is attached to the camera. By attaching the member to the brat that rotates around the fixed shaft, the camera has a simpler structure than the conventional example when attached to the camera mounting member. Pan direction camera, can be rotated in the tilt direction, and can improve the reliability of the monitoring camera apparatus.

  An embodiment of a surveillance camera device and a swivel according to the present invention will be described in detail below in the order of Embodiment 1 and Embodiment 2 with reference to FIGS.

1 (a) and 1 (b) are perspective views showing a surveillance camera device according to a first embodiment of the present invention,
FIG. 2 is a longitudinal sectional view showing the surveillance camera device according to the first embodiment of the present invention in section,
3A, 3B, 3C, and 3D are a top view, a left side view, a front view, a right side view showing the surveillance camera device of the first embodiment according to the present invention,
FIGS. 4A and 4B are left side views for explaining the tilting operation in the surveillance camera device according to the first embodiment of the present invention.

  As shown in FIGS. 1 to 3, the monitoring camera device 10 </ b> A according to the first embodiment of the present invention is attached to, for example, an indoor ceiling, and is a single rotational drive source as will be described later. According to each rotation direction of the motor 23, the camera 17 such as a video camera or a still camera is rotated in the pan direction and the tilt direction, respectively, so that the room can be monitored.

  Here, FIG. 1 and FIG. 2 are used in combination. In the monitoring camera apparatus 10A of the first embodiment, the base 11 attached to the indoor ceiling or the like uses a sheet metal material, and both the upper surface 11a and the lower surface 11b are flat. It is formed in a triangular plate shape, and attachment portions 11c are bent upward at three apex portions on the upper surface 11a side, and the lower surface 11b of the base table 11 is long by caulking or the like. The fixed shaft 12 is fixed downward.

  Further, the fixed shaft 12 described above has a small-diameter portion 12b formed in an elongated shape below a short large-diameter portion 12a that contacts the lower surface 11b of the base base 11. In the small-diameter portion 12 b of the fixed shaft 12, a first pan gear (hereinafter referred to as “pan gear”) 14 having the first one-way clutch 13 fitted in the central portion is provided along the lower surface 11 b of the base 11. The first one-way clutch 13 is pivotally mounted in a substantially horizontal posture so as to be selectively rotatable, and a first bearing portion 15d formed on a bracket 15 described below is rotatable below the pan gear 14. It is supported. At this time, the E-ring 16 is fitted into the distal end portion of the small diameter portion 12 b of the fixed shaft 12, so that the bracket 15 does not come off from the small diameter portion 12 b of the fixed shaft 12.

  The bracket 15 is formed by bending a flat vertical surface 15a, left and right side surfaces 15b and 15c formed by bending the left and right sides of the vertical surface 15a, and a small diameter portion 12b of the fixed shaft 12 by bending the left side surface 15b. A first bearing portion 15d having shaft holes 15d1 and 15d2 (only shown in FIG. 2) supported at upper and lower portions is integrally bent using a sheet metal material.

  A camera mounting member 18 with a camera 17 mounted therein is disposed below the vertical surface 15a of the bracket 15 and between the left side surface 15b and the right side surface 15c. The left and right side surfaces 18b and 18c are bent downward from the top surface 18a on which the camera 17 is suspended. In the first embodiment, the camera 17 and the camera mounting member 18 are configured separately, but a camera in which the camera 17 and the camera mounting member 18 are configured integrally may be used.

  In addition, a short fixed shaft 19 is provided on the inner side of the left side surface 15 b of the bracket 15 so as to be orthogonal to the above-described fixed shaft 12, and this fixed shaft 19 is formed on the left side surface 18 b of the camera mounting member 18. Of these, the left side surface 18 b of the camera mounting member 18 is pivotally supported at the central portion in the longitudinal direction, and is supported rotatably about the fixed shaft 19.

  On the other hand, the long rotating shaft 20 that is fixed to the central portion in the longitudinal direction of the right side surface 18c of the camera mounting member 18 and rotates integrally with the camera mounting member 18 includes a large diameter portion 20a, a medium diameter portion 20b, and the like. The small-diameter portion 20c is formed so as to be sequentially connected to the right side surface 15c side of the bracket 15, and the rotary shaft 20 is also provided so as to be orthogonal to the fixed shaft 12 described above. It is laid laterally symmetrically with respect to the short fixed shaft 19 described above.

  A second gear 22 for tilting (hereinafter referred to as a tilting gear) 22 in which the second one-way clutch 21 is fitted in the central portion is orthogonal to the panning gear 14 at the middle diameter portion 20 b of the rotary shaft 20. In this posture, the second one-way clutch 21 is selectively pivotally mounted by the action of the second one-way clutch 21, and the small-diameter portion 20c of the rotary shaft 20 is rotatable to the second bearing portion 15e formed to project from the right side surface 15c of the bracket 15. Since it is supported, the right side surface 18c side of the camera mounting member 18 is rotatably supported around the rotary shaft 20 in synchronization with the left side surface 18b side of the camera mounting member 18.

  Also, a panning gear 14 provided substantially horizontally along the lower surface 11 b of the base 11 at the upper right of the vertical surface 15 a of the bracket 15, and a tilting gear provided orthogonal to the panning gear 14. A motor 23 serving as a single rotational drive source is attached to a portion orthogonal to the motor 22 so as to be able to rotate forward and reverse, and a worm gear 24 is fixed to the output shaft of the motor 23. At the same time, the worm gear 24 is always meshed with the pan gear 14 and the tilt gear 22.

  At this time, in the following description, when the worm gear 24 rotates counterclockwise (arrow A1 direction), for example, when viewed from the front end side of the output shaft of the motor 23, the worm gear 24 rotates clockwise (arrow A2 direction). ) Is set as reverse rotation.

  At this time, the first one-way clutch 13 fitted in the pan gear 14 is integrally fixed to the small diameter portion 12b of the fixed shaft 12 so that the driving force is transmitted when the worm gear 24 is rotated forward. On the other hand, the fitting direction of the first one-way clutch 13 is set with respect to the pan gear 14 so that the worm gear 24 rotates idly with respect to the small-diameter portion 12b of the fixed shaft 12 during the reverse rotation.

  Further, the second one-way clutch 21 fitted in the tilt gear 22 is in a state of idling with respect to the middle diameter portion 20b of the rotary shaft 20 when the worm gear 24 is rotated forward, while driving force is generated when the worm gear 24 is rotated backward. The fitting direction of the second one-way clutch 21 is set with respect to the tilt gear 22 so as to be integrally fixed to the middle diameter portion 20b of the rotary shaft 20 so as to be transmitted.

  Accordingly, the fitting directions of the first and second one-way clutches 13 and 21 are opposite to each other corresponding to the forward and reverse rotation of the worm gear 24.

  Here, the operation of the monitoring camera device 10A of the first embodiment configured as described above will be described in the order of pan direction rotation and tilt direction rotation.

  As shown in FIGS. 1A and 1B, when the camera 17 is rotated in the pan direction, which is substantially parallel to the lower surface 11b of the base base 11, the pan gear 14 and the tilt gear 22 are used. The worm gear 24 fixed to the output shaft of one of the meshed motors 23 is rotated forward in the counterclockwise direction (arrow A1 direction). As the worm gear 24 rotates in the forward direction, the first one-way clutch 13 fitted into the pan gear 14 is integrally fixed to the fixed shaft 12 so that the driving force is transmitted. 12, the bracket 15 rotates in the direction of arrow B 1 while the worm gear 24 rolls along the pan gear 14 integrally with the bracket 15, so that the bracket 15 is attached to the bracket 15 via the camera attachment member 18. The camera 17 can rotate in the pan direction.

  On the other hand, as the worm gear 24 rotates forward, the second one-way clutch 21 fitted in the tilt gear 22 rotates idly, so that the camera 17 attached to the bracket 15 via the camera attachment member 18 cannot rotate in the tilt direction.

  Next, as shown in FIGS. 1A and 1B, when the camera 17 is rotated in a tilt direction that is substantially perpendicular to the lower surface 11 b of the base base 11, The worm gear 24 fixed to the output shaft of one motor 23 meshed with the tilt gear 22 is reversely rotated clockwise (arrow A2 direction). As the worm gear 24 rotates in the reverse direction, the first one-way clutch 13 fitted in the pan gear 14 rotates idle, so that the bracket 15 cannot rotate with respect to the fixed shaft 12. The camera 17 attached via the camera cannot rotate in the pan direction.

  On the other hand, with the reverse rotation of the worm gear 24, the second one-way clutch 21 fitted into the tilt gear 22 is integrally fixed to the rotary shaft 20 so that the driving force is transmitted. Thereby, from the initial state shown in FIG. 4A, the tilt gear 22 rotates integrally with the rotary shaft 20 in the direction of the arrow C1 as shown in FIG. 4B, and the camera to which the rotary shaft 20 is fixed. Since the attachment member 18 also rotates in the direction of arrow C1, the camera 17 attached to the camera attachment member 18 can rotate in the tilt direction.

  In the above-described first embodiment, the case where the base table 11 is mounted substantially horizontally on the ceiling or the like in the room has been described. However, unlike the case where the base table 11 is mounted substantially vertically on the wall or the like in the room. It is obvious that the first gear 14 can function as a tilting gear, while the second gear 22 can function as a panning gear, and the first and second gears 14 arranged orthogonal to each other. , 22 may be set for panning and the other for tilting.

  As described above in detail, in the monitoring camera device 10A of the first embodiment, the first gear 14 in which the first one-way clutch 13 is fitted in the center and the second gear in which the second one-way clutch 21 is fitted in the center. The camera 17 can be rotated in the pan direction and the tilt direction with a simpler structure than the conventional example by engaging the worm gear 24 that rotates forward and backward with this orthogonal part. Thus, it is possible to improve the reliability of one monitoring camera device 10A.

  In the first embodiment, the camera 17 is mounted in the camera mounting member 18 in advance. However, the present invention is not limited to this, and the camera 17 is mounted on the bracket 15 with the camera mounting member 18 mounted on the bracket 15. Even if it is removed from the camera, it can be marketed, and what is configured in this way is called a swivel, and includes a camera mounting member 18 for mounting the camera 17 by applying the technical idea of the first embodiment. It is also possible to configure the swivel base of the first embodiment so that the camera 17 is rotated in the pan direction and the tilt direction in accordance with the respective rotation directions of the single rotational drive sources 23 and 24 that rotate forward and backward.

5 (a) and 5 (b) are perspective views showing a surveillance camera device according to a second embodiment of the present invention,
FIG. 6 is a longitudinal sectional view showing the surveillance camera device according to the second embodiment of the present invention in section,
7 (a), (b), (c), and (d) are a top view, a left side view, a front view, and a right side view showing a surveillance camera device according to a second embodiment of the present invention.
FIGS. 8A and 8B are left side views for explaining the tilting operation in the surveillance camera device according to the second embodiment of the present invention.

  The monitoring camera device 10B of the second embodiment shown in FIGS. 5 to 7 has the same configuration as the monitoring camera device 10A of the first embodiment described above except for a part thereof. The same constituent members as described above will be described with appropriate reference numerals, and different reference numerals will be given to different constituent members with respect to the first embodiment, and different points will be mainly described.

  Similarly to the first embodiment, the monitoring camera device 10B according to the second embodiment pans the camera 17 such as a video camera or a still camera according to each rotation direction of one motor 23 serving as a single rotation drive source. It is configured so that the room can be monitored by rotating in the direction and the tilt direction.

  Further, a fixed shaft 12 is fixed to the lower surface 11b of the base base 11 attached to the indoor ceiling or the like, and a pan gear 14 in which a first one-way clutch 13 is fitted to the small diameter portion 12b of the fixed shaft 12 is a base. The first one-way clutch 13 is pivotally mounted in a substantially horizontal posture along the lower surface 11b of the base 11 so as to be selectively rotatable, and below the pan gear 14, the first bearing portion 15d of the bracket 15 is mounted. The point that is rotatably supported is the same as in the first embodiment.

  Here, a different point from the first embodiment will be described. The rotating shaft 31 that is rotatably attached to the right side surface 15c of the bracket 15 so as to be orthogonal to the fixed shaft 12 is a right side of a camera mounting member 34 described later. A tilting second gear (hereinafter referred to as a tilting gear) 32 that is separated from the surface 34c and is pivotally attached to the rotating shaft 31 is the tilting gear 22 (FIGS. 1 to 4) of the first embodiment. ) And a different shape.

  The tilt gear 32 described above has a large-diameter gear portion 32a that meshes with the worm gear 24 fixed to the output shaft of the motor 23, and a slightly smaller diameter than the large-diameter gear portion 32a. A disk portion 32b facing the surface 34c is formed concentrically and integrally, and a circular eccentric cam groove 32c is formed in the disk portion 32b eccentrically with respect to the center portion.

  At this time, the tilt gear 32 is pivotally attached to the large-diameter portion 31a of the rotating shaft 31 so as to be selectively rotatable by the action of the second one-way clutch 21 with the second one-way clutch 21 fitted in the central portion. In addition, the small-diameter portion 31b of the rotary shaft 31 is rotatably supported by a second bearing portion 15e formed to protrude from the right side surface 15c of the bracket 15. At this time, the E-ring 33 is fitted into the distal end portion of the large-diameter portion 31 a of the rotating shaft 31, so that the tilt gear 32 is prevented from coming off from the large-diameter portion 31 a of the rotating shaft 31.

  With the use of the tilt gear 32 having the eccentric cam groove 32c described above, the camera mounting member 34 for mounting the camera 17 is longer in the longitudinal direction than the camera mounting member 18 (FIGS. 1 to 4) of the first embodiment. The side is formed longer than the longitudinal dimension of the camera 17, the left and right side surfaces 34b, 34c are bent downward from the top surface 34a on which the camera 17 is suspended, and the camera mounting member 34 is attached to the bracket. The structure attached to 15 is also different from that of the first embodiment. In the second embodiment, the camera 17 and the camera mounting member 34 are configured separately, but a camera in which the camera 17 and the camera mounting member 34 are configured integrally may be used.

  That is, the fixed shaft 35 for rotating the camera mounting member is fixed inside the left side surface 15 b of the bracket 15 so as to be orthogonal to the fixed shaft 12 described above. The camera mounting member 34 is inserted into each shaft hole (not shown) formed in the rear portion in the longitudinal direction of the left side surface 34b and the right side surface 34c of the camera mounting member 34 behind the rear end in the longitudinal direction. 35 is supported so as to be rotatable about 35.

  In addition, a cam follower 36 is fixed to the central portion in the longitudinal direction of the right side surface 34 c of the camera mounting member 34 toward the disc portion 32 b of the tilt gear 32, and the cam follower 36 is a disc of the tilt gear 32. It fits in a circular eccentric cam groove 32c formed eccentric to the portion 32b so as to be able to follow.

  Also in the second embodiment, when the worm gear 24 rotates in the counterclockwise direction (arrow A1 direction), for example, when viewed from the shaft tip side of the motor 23, the worm gear 24 rotates in the clockwise direction (arrow A2 direction). Set the time to reverse rotation.

  At this time, the first one-way clutch 13 fitted in the pan gear 14 is integrally fixed to the small diameter portion 12b of the fixed shaft 12 so that the driving force is transmitted when the worm gear 24 is rotated forward. On the other hand, the fitting direction of the first one-way clutch 13 is set with respect to the pan gear 14 so that the worm gear 24 rotates idly with respect to the small-diameter portion 12b of the fixed shaft 12 during the reverse rotation.

  The second one-way clutch 21 fitted in the tilt gear 32 takes a state of idling with respect to the large-diameter portion 31a of the rotating shaft 31 when the worm gear 24 is rotated forward, and has a driving force when the worm gear 24 is rotated backward. The fitting direction of the second one-way clutch 21 is set with respect to the tilt gear 32 so as to be integrally attached to the large-diameter portion 31a of the rotary shaft 31 so as to be transmitted.

  Accordingly, the fitting directions of the first and second one-way clutches 13 and 21 are opposite to each other corresponding to the forward and reverse rotation of the worm gear 24.

  Here, the operation of the monitoring camera device 10B of the second embodiment configured as described above will be described in the order of pan direction rotation and tilt direction rotation.

  As shown in FIGS. 5A and 5B, when the camera 17 is rotated in the pan direction which is substantially parallel to the lower surface 11b of the base base 11, the pan gear 14 and the eccentric cam groove 32c are provided. The worm gear 24 fixed to the output shaft of one motor 23 meshed with the tilt gear 32 is rotated in the counterclockwise direction (arrow A1 direction). Along with the forward rotation of the worm gear 24, the first one-way clutch 13 fitted into the pan gear 14 is integrally fixed to the fixed shaft 12 so that the driving force is transmitted, as in the first embodiment. Since the worm gear 24 rolls along the panning gear 14 together with the bracket 15 around the fixed shaft 12, the bracket 15 rotates in the direction of the arrow B1. The camera 17 attached via the member 18 can rotate in the pan direction.

  On the other hand, as the worm gear 24 rotates forward, the second one-way clutch 21 fitted in the tilt gear 32 rotates idly, so that the camera 17 attached to the bracket 15 via the camera attachment member 18 cannot rotate in the tilt direction.

  Next, as shown in FIGS. 5A and 5B, when the camera 17 is rotated in a tilt direction that is substantially perpendicular to the lower surface 11b of the base base 11, the pan gear 14 and The worm gear 24 fixed to the output shaft of one motor 23 meshed with the tilt gear 32 having the eccentric cam groove 32c is reversely rotated clockwise (arrow A2 direction). As the worm gear 24 rotates in the reverse direction, the first one-way clutch 13 fitted in the pan gear 14 rotates idly as in the first embodiment, so that the bracket 15 cannot rotate with respect to the fixed shaft 12. The camera 17 attached to 15 via the camera attachment member 18 cannot rotate in the pan direction.

  On the other hand, with the reverse rotation of the worm gear 24, the second one-way clutch 21 fitted into the tilt gear 32 having the eccentric cam groove 32c is integrally fixed to the rotary shaft 31 so that the driving force is transmitted. Take state. As a result, the tilt gear 32 rotates in the direction of the arrow C1 as shown in FIG. 8B integrally with the rotary shaft 31 from the initial state shown in FIG. As the tilt gear 32 rotates in the direction of arrow C1, the cam follower 36 attached to the right side surface 34c of the camera attachment member 34 follows along the eccentric cam groove 32c, so that the fixed shaft that supports the camera attachment member 18 is supported. The camera 17 can rotate in the tilt direction around 35.

  In the second embodiment, the case where the base table 11 is mounted substantially horizontally on the ceiling or the like in the room has been described. However, unlike the case where the base table 11 is mounted substantially vertically on the wall or the like in the room. It is obvious that the first gear 14 can function as a tilt gear and the second gear 32 can function as a pan gear, and the first and second gears 14 and 32 arranged orthogonal to each other. One of them may be set for panning and the other for tilting.

  As described above in detail, the surveillance camera device 10B of the second embodiment also has the first gear 14 in which the first one-way clutch 13 is fitted at the center, the eccentric cam groove 32c, and the second one-way clutch 21 as the center. The camera 17 is rotated in the pan direction and the tilt direction with a simpler structure than the conventional example by making the second gear 32 fitted in the section perpendicular to each other and meshing with the worm gear 24 that rotates forward and backward in this orthogonal part. In addition, it is possible to improve the reliability of the monitoring camera device 10B of the second embodiment.

  In the second embodiment described above, the camera 17 is mounted in the camera mounting member 34 in advance. However, the present invention is not limited thereto, and the camera 17 is mounted on the bracket 15 with the camera mounting member 34 mounted on the bracket 15. Even if it is removed from the camera, it is commercially available, and what is configured as described above is called a swivel, and includes a camera mounting member 34 for mounting the camera 17 by applying the technical idea of the second embodiment. It is also possible to configure the swivel base of the second embodiment so that the camera 17 is rotated in the pan direction and the tilt direction according to the respective rotation directions of the one rotational drive source 23 and 24 that rotate forward and backward.

(A), (b) is the perspective view which showed the surveillance camera apparatus of Example 1 which concerns on this invention. It is the longitudinal cross-sectional view which showed the surveillance camera apparatus of Example 1 which concerns on this invention in cross section. (A), (b), (c), (d) is the top view, left side view, front view, and right side view which showed the surveillance camera apparatus of Example 1 which concerns on this invention. (A), (b) is a left view for demonstrating tilt operation | movement in the surveillance camera apparatus of Example 1 which concerns on this invention. (A), (b) is the perspective view which showed the monitoring camera apparatus of Example 2 which concerns on this invention. It is the longitudinal cross-sectional view which showed the surveillance camera apparatus of Example 2 which concerns on this invention in cross section. (A), (b), (c), (d) is the top view, left side view, front view, and right side view which showed the surveillance camera apparatus of Example 2 which concerns on this invention. (A), (b) is a left view for demonstrating tilt operation | movement in the surveillance camera apparatus of Example 2 which concerns on this invention. It is the perspective view which showed the conventional pan head camera.

Explanation of symbols

10A: Surveillance camera device of Example 1,
10B: Surveillance camera device of Example 2,
11 ... Base stand, 11a ... Upper surface, 11b ... Lower surface, 11c ... Mounting part,
12 ... fixed shaft, 12a ... large diameter part, 12b ... small diameter part,
13 ... 1st one-way clutch, 14 ... 1st gear (panning gear),
15 ... Bracket, 15a ... Vertical surface, 15b ... Left side, 15c ... Right side,
15d ... 1st bearing part, 15e ... 2nd bearing part,
16 ... E-ring, 17 ... Camera,
18 ... Camera mounting member, 18a ... Top, 18b ... Left side, 18c ... Right side,
19 ... fixed shaft,
20 ... Rotating shaft, 20a ... Large diameter part, 20b ... Medium diameter part, 20c ... Small diameter part,
21 ... Second one-way clutch,
22 ... 2nd gear (tilt gear), 23 ... Motor, 24 ... Worm gear,
31 ... Rotating shaft, 31a ... Large diameter part, 31b ... Small diameter part,
32. Second gear (tilting gear),
32a ... gear part, 32b ... disk part, 32c ... eccentric cam groove,
35 ... fixed shaft, 36 ... cam follower.

Claims (4)

In the monitoring camera device configured to rotate the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
A second gear disposed orthogonally to the first gear and meshed with the worm gear, and is pivotally attached to the rotary shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates in the reverse direction. With gear,
A bracket attached to the rotating shaft integrally with the camera or a camera mounting member to which the camera is attached, a bracket to which the one rotational driving source is attached and rotatably supported by the fixed shaft;
A surveillance camera device characterized by comprising: In the monitoring camera device configured to rotate the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
It is arranged orthogonal to the first gear and meshes with the worm gear, and is pivotally attached to the rotating shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates reversely, A second gear having an eccentric cam groove;
The rotating shaft is attached, and the camera or a camera attachment member to which the camera is attached is rotatably attached, and a cam follower that follows the eccentric cam groove of the second gear is attached to the camera or the camera attachment member. And a bracket to which the one rotational drive source is attached and rotatably supported on the fixed shaft;
A surveillance camera device characterized by comprising: In a swivel comprising a camera mounting member for mounting a camera and configured to rotate the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
A second gear disposed orthogonally to the first gear and meshed with the worm gear, and is pivotally attached to the rotary shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates in the reverse direction. With gear,
The camera mounting member is mounted integrally with the rotating shaft, and the one rotational driving source is mounted and a bracket rotatably supported on the fixed shaft;
A swivel characterized by comprising: In a swivel comprising a camera mounting member for mounting a camera and configured to rotate the camera in the pan direction and the tilt direction according to each rotation direction of one rotational drive source that rotates forward and backward,
A base stand,
A fixed shaft suspended from the base table;
The worm gear meshes with the worm gear fixed to the output shaft of the one rotational drive source, and is pivotally attached to the fixed shaft via the first one-way clutch so that the driving force is transmitted when the worm gear rotates forward. The first gear,
It is arranged orthogonal to the first gear and meshes with the worm gear, and is pivotally attached to the rotating shaft via the second one-way clutch so that the driving force is transmitted when the worm gear rotates reversely, A second gear having an eccentric cam groove;
The rotating shaft is mounted, the camera mounting member is rotatably mounted, a cam follower that follows the eccentric cam groove of the second gear is mounted on the camera mounting member, and the one rotational drive source A bracket attached to the fixed shaft so as to be rotatable.
A swivel characterized by comprising:

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