CN111928073A

CN111928073A - Control holder of monitoring camera

Info

Publication number: CN111928073A
Application number: CN202010791912.0A
Authority: CN
Inventors: 熊旭斌
Original assignee: Wuhan Wanjie Photoelectric Co ltd
Current assignee: Wuhan haomengyuan mechanical equipment manufacturing Co.,Ltd.
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2020-11-13

Abstract

The invention discloses a control holder of a monitoring camera, which relates to the technical field of auxiliary devices of the monitoring camera and comprises an installation seat, wherein the bottom of the installation seat is coaxially and rotatably connected with a rotating disc, the bottom of the rotating disc is fixedly connected with two brackets, a camera body is rotatably connected between the two brackets, a micro motor is installed in the installation seat, the output end of the micro motor is coaxially and fixedly connected with an output shaft, a valve box is coaxially and fixedly installed in the rotating disc, three electrode plates are connected in the valve box, and electrorheological fluid is filled in the valve box; and when the valve box works, the friction mechanism is loose and fixed, and the valve box is controlled by the micro motor and the control chip, so that the independent rotation in the horizontal direction and the vertical direction and the control of the rotation torque are realized.

Description

Control holder of monitoring camera

Technical Field

The invention relates to the technical field of auxiliary devices of monitoring cameras, in particular to a control holder of a monitoring camera.

Background

The holder is a supporting device of the camera, and the existing holder is divided into a fixed holder and an electric holder, wherein the fixed holder is suitable for places with small monitoring range, and only needs to adjust the angle and the position of the holder when the camera is installed and then lock; the electric pan-tilt is suitable for places with large monitoring ranges, and the pan-tilt is controlled to rotate by a motor generally so as to improve the monitoring range of the camera.

In electronic cloud platform, all-round cloud platform can not only rotate in the horizontal direction in comparison with horizontal cloud platform and can rotate in vertical direction simultaneously, and then obtains bigger monitoring range. However, when the existing omnibearing tripod head works, two motors are required to be used for horizontal and vertical independent rotation control, and meanwhile, in order to avoid that the motors are burnt down due to forced starting when the tripod head is frozen outdoors or the motor shafts are damaged due to forced movement, a speed reducing mechanism is required to be arranged to increase the torque through reducing the rotating speed to start the tripod head, and a current limiting circuit is arranged to protect the motors, however, the two motors and the adaptive speed reducing mechanism limit the volume ratio of the tripod head and a camera, so that the existing camera carrying the tripod head is relatively bulky in size, the appearance design difficulty of the camera is improved, and the production cost is increased.

Disclosure of Invention

The invention provides a monitoring camera control holder, and aims to solve the problem that the volume of the holder is limited by two motors and a corresponding speed reducing mechanism in the existing omnibearing holder.

In order to achieve the purpose, the invention adopts the following technical scheme:

a monitoring camera control holder comprises an installation seat, wherein the bottom of the installation seat is coaxially and rotatably connected with a rotating disc, the bottom of the rotating disc is fixedly connected with two supports, and a camera body is rotatably connected between the two supports;

a micro motor is arranged in the mounting seat, the output end of the micro motor is coaxially and fixedly connected with an output shaft, a valve box is coaxially and fixedly arranged in the rotating disc, three electrode plates are connected in the valve box, electrorheological fluid is filled in the valve box, the three electrode plates are electrically connected with a control chip, the control chip is arranged in the mounting seat, one end of the output shaft, which is far away from the micro motor, is coaxially and hermetically connected with the valve box in a rotating way, extends to the middle part of the valve box and penetrates through the two electrode plates in a rotating way, the inner circumference of the bottom of the valve box is fixedly connected with a sealing bearing, the bottom of the valve box is coaxially and hermetically connected with a driving shaft in a rotating way, the driving shaft penetrates through one electrode plate in a sealing and rotating mode, the driving shaft and the output shaft are arranged in a gap mode, one end, far away from the valve box, of the driving shaft is connected with a driving mechanism through a gear set, the driving mechanism is arranged in the rotating disc and the bracket, and the output end of the driving mechanism is connected with the two sides of the camera body;

all be provided with friction mechanism between mount pad and rolling disc and support and the body of making a video recording, friction mechanism includes conductive spring and friction disc, a plurality of conductive spring of fixedly connected with on mount pad and the support, it is a plurality of conductive spring electric connection just keeps away from mount pad and support one end fixedly connected with friction disc on the control chip, the friction disc supports and leans on the rolling disc and the body of making a video recording.

Preferably, the outer peripheral side of the output shaft, the inner peripheral side of the valve box, and the outer peripheral side of the drive shaft are provided with protrusions, and the plurality of protrusions are arranged with a gap therebetween.

Preferably, the valve box is convex, the three electrode plates are respectively positioned at the top, the middle and the bottom in the valve box, the electrode plate positioned at the middle is fixedly connected to the valve box, the electrode plates positioned at the top and the bottom are slidably connected to the valve box, and the electrorheological fluid is positioned between the three electrode plates.

Preferably, protection switches are installed at the top and the bottom in the valve box, and the protection switches are existing extrusion type switches and are electrically connected with the control chip.

Preferably, actuating mechanism includes axis of rotation, belt and belt pulley, the axis of rotation rotates to be connected in the rolling disc and through gear train and actuating shaft connection, axis of rotation pot head is equipped with the belt, the belt is kept away from an axis of rotation pot head and is equipped with the belt pulley, the belt pulley rotate connect in the support and with body one side fixed connection of making a video recording.

Compared with the prior art, the invention has the following beneficial effects:

1. when the camera shooting device works, if an external horizontal action signal is received, the control chip enables electrode plates at the top and the middle part in the valve box to be electrified, an electric field is formed between the electrode plates and the electrode plates, electrorheological fluid generates liquid-solid phase change under the action of the electric field, at the moment, the output shaft and the valve box form a fixing effect, the micro motor is started, the output end of the micro motor drives the output shaft to rotate, so that the rotating disc is driven to rotate, and the camera shooting body is enabled to horizontally rotate; if an external vertical action signal is received, the control chip controls the electrode plates at the middle part and the bottom part in the valve box to be electrified, finally, the output shaft and the driving shaft form a fixed effect, at the moment, the micro motor works, and the output end of the micro motor drives the driving shaft to rotate so as to drive the camera body to vertically rotate through the driving mechanism; the micro motor is matched with the valve box for control, so that the independent rotation control in the horizontal direction and the vertical direction is realized.

2. In the working process, the control chip controls the intensity of the electric field between the electrode plates to control the yield strength of the electrorheological fluid, so that when the electrorheological fluid transmits the output torque from the micro motor, the torque transmission upper limit and the transmission efficiency can be controlled, the situation that the micro motor is burnt down or the output shaft is damaged due to forced movement because the cradle head is forcibly started when being frozen outdoors is avoided, the output efficiency of the micro motor is favorably controlled, the use of a speed reducing mechanism is reduced, and the internal space is saved;

meanwhile, along with the increase of the electric field intensity, the volume of the electrorheological fluid is increased, so that the slidable electrode plate is pushed to move towards the direction of the protection switch in the valve box until the protection switch is extruded and started, and the protection switch is disconnected from the control chip to conduct the current of the electrode plate, thereby playing the role of current-limiting protection.

3. When the control chip works, the control chip conducts the corresponding conductive spring, and the conductive spring contracts to further enable the friction plate to loosen components needing to rotate mutually, so that the rotating resistance is reduced when the control chip works, and the fixing effect is kept when the control chip does not work.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the valve box of the present invention;

fig. 3 is an enlarged schematic view of the friction mechanism of the present invention.

In the figure: the device comprises a mounting seat 1, a rotary disc 2, a support 3, a camera body 4, a micro motor 5, an output shaft 6, a boss 61, a valve box 7, a control chip 71, a protection switch 72, a sealed bearing 73, an electrode plate 8, a driving shaft 9, a driving mechanism 10, a rotating shaft 101, a belt 102, a belt pulley 103, a friction mechanism 11, a conductive spring 111 and a friction plate 112.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a monitoring camera control holder comprises a mounting base 1, wherein the bottom of the mounting base 1 is coaxially and rotatably connected with a rotating disc 2, the bottom of the rotating disc 2 is fixedly connected with two supports 3, and a camera body 4 is rotatably connected between the two supports 3.

A micro motor 5 is installed in the installation seat 1, an output shaft 6 is coaxially and fixedly connected with the output end of the micro motor 5, the micro motor 5 works, and the output end of the micro motor provides driving torque through the output shaft 6.

A valve box 7 is coaxially and fixedly installed in the rotating disc 2, three electrode plates 8 are connected in the valve box 7, and electrorheological fluid is filled in the valve box 7, is a complex fluid formed by mixing dielectric particles and insulating liquid, is converted from a liquid state to a solid state under the action of an electric field with certain intensity, and increases the yield strength and the volume of the electric field along with the enhancement of the electric field intensity.

The equal electrically connected of three electrode slice 8 has control chip 71, control chip 71 is installed in mount pad 1, control chip 71 is owing to not marking in the less picture of structure, valve box 7 is type of calligraphy, and three electrode slice 8 is located valve box 7 top respectively, middle part and bottom, wherein be located the electrode slice 8 fixed connection in middle part on valve box 7, the electrode slice 8 sliding connection who is located top and bottom is on valve box 7, electrorheological fluids is located between three electrode slice 8, three electrode slice 8 break-make electricity and the circular telegram intensity of control chip 71 control, and then the electric field intensity between two electrode slices 8 of control.

Protection switches 72 are installed at the top and the bottom in the valve box 7, the protection switches 72 are existing extrusion type switches and are electrically connected with the control chip 71, when the electric field intensity received by the electrorheological fluid reaches a certain intensity, the electrorheological fluid expands to push the electrode plates 8 to extrude the protection switches 72, and the protection switches 72 disconnect the electrification of the control chip 71 to the electrode plates 8, so that the current-limiting protection effect is achieved.

The output shaft 6 is far away from the coaxial sealed rotation of micro motor 5 one end and is connected on valve box 7 and extends to its middle part and sealed rotation and runs through two electrode slices 8, when electrorheological fluids solidification and yield strength change, transmits the drive moment of output shaft 6 for valve box 7 and rolling disc 2 through electrorheological fluids, and output shaft 6 periphery side and valve box 7 inner periphery side all are provided with protruding 61, and a plurality of protruding 61 interval arrange each other, improve the fixed connection effect of electrorheological fluids to the two.

The inner peripheral side of the bottom of the valve box 7 is fixedly connected with a sealing bearing 73, the bottom is coaxially and rotatably connected with a driving shaft 9 in a sealing mode, the driving shaft 9 penetrates through one electrode plate 8 in a sealing mode, the driving shaft 9 and the output shaft 6 are arranged in a gap mode, driving torque of the output shaft 6 is transmitted to the driving shaft 9 through electro-rheological fluid, protrusions 61 are arranged on the outer peripheral side of the output shaft 6 and the outer peripheral side of the driving shaft 9, and the effect of the electro-rheological fluid.

One end of the driving shaft 9, which is far away from the valve box 7, is connected with a driving mechanism 10 through a gear set, the driving mechanism 10 is installed in the rotating disc 2 and the support 3, and the output end of the driving mechanism is connected with the two sides of the camera body 4.

Actuating mechanism 10 includes axis of rotation 101, belt 102 and belt pulley 103, axis of rotation 101 rotates to be connected in rolling disc 2 and be connected with drive shaft 9 through the gear train, axis of rotation 101 pot head is equipped with belt 102, belt 102 keeps away from axis of rotation 101 pot head and is equipped with belt pulley 103, belt pulley 103 rotates to be connected in support 3 and with camera body 4 one side fixed connection, drive shaft 9 rotates, drive axis of rotation 101 through the gear train and rotate, and then drive camera body 4 through belt 102 and belt pulley 103 and rotate.

All be provided with friction mechanism 11 between mount pad 1 and rolling disc 2 and support 3 and the body 4 of making a video recording, friction mechanism 11 includes electrically conductive spring 111 and friction disc 112, a plurality of electrically conductive springs 111 of fixedly connected with on mount pad 1 and the support 3, a plurality of electrically conductive springs 111 electric connection just keep away from mount pad 1 and support 3 one end fixedly connected with friction disc 112 on control chip 71, friction disc 112 supports and leans on rolling disc 2 and the body 4 of making a video recording.

Under the elastic force of the conductive springs 111, the friction plates 112 form a fixing effect on the mounting seat 1 and the rotating disc 2, and the bracket 3 and the camera body 4, so as to maintain the current camera angle, and when the control chip 71 works, the control chip 71 conducts the corresponding conductive springs 111.

When the conductive spring 111 is electrified, each coil of the spring is equivalent to one coil, the coils are electrified to generate induced magnetic fields, the induced magnetic fields formed by the coils attract each other, the conductive spring 111 contracts, and further the friction plate 112 loosens parts which need to rotate mutually, so that the rotating resistance is reduced during work, and the fixing effect is kept when the friction plate does not work.

The principles of the present invention are now described as follows:

after the device is installed, when the device needs to rotate in the horizontal direction, a control chip 71 in the installation base 1 receives an external horizontal action signal, the control chip 71 enables electrode plates 8 at the top and the middle in a valve box 7 in a rotating disc 2 to be electrified, an electric field is formed between the electrode plates and the electrode plates, electrorheological fluid generates liquid-solid phase change under the action of the electric field, and an output shaft 6 which is connected with the valve box 7 in a sealing and rotating mode and extends into the valve box 7 forms a fixing effect with the valve box 7;

meanwhile, the control chip 71 conducts the conductive spring 111 in the friction mechanism 11 between the mounting seat 1 and the rotating disc 2 rotatably connected to the mounting seat 1, and the conductive spring 111 is electrified and contracted, so that the friction plate 112 fixedly connected with the conductive spring 111 releases friction fixation on the rotating disc 2;

then the control chip 71 starts the micro motor 5, the output end of the micro motor drives the output shaft 6 coaxially and fixedly connected with the micro motor to rotate, and then the valve box 7 and the rotating disc 2 are driven to rotate through the electro-rheological fluid, so that the camera body 4 horizontally rotates.

When the valve box 7 needs to rotate in the vertical direction, the control chip 71 receives an external vertical action signal, and the control chip 71 controls the electrode plates 8 at the middle part and the bottom part in the valve box 7 to be electrified, so that the output shaft 6 and the driving shaft 9 rotatably connected with the bottom part in the valve box 7 form a fixing effect;

meanwhile, the control chip 71 drives the friction mechanism 11 between the bracket 3 on the rotating disc 2 and the camera body 4 rotatably connected to the bracket 3, and the friction plate 112 loosens the friction fixation on the camera body 4;

then the control chip 71 starts the micro motor 5, the output shaft 6 drives the driving shaft 9 to rotate on the sealing bearing 73 connected in the valve box 7 through the electric rheological fluid, and finally the driving shaft 9 drives the camera body 4 to vertically rotate through the driving mechanism 10.

In the initial starting process or the horizontal and vertical action executing process, the control chip 71 controls the strength of the electric field between the electrode plates 8 to control the yield strength of the electrorheological fluid, so that when the electrorheological fluid transmits the output torque from the micro motor 5, the torque transmission upper limit and the transmission efficiency can be controlled, the situation that the micro motor 5 is burnt or the output shaft 6 is damaged due to forced movement when the tripod head is in outdoor freezing is avoided, the output efficiency of the micro motor 5 is favorably controlled, the use of a speed reducing mechanism is reduced, and the internal space is saved;

meanwhile, along with the increase of the electric field intensity, the volume of the electrorheological fluid is increased, so that the electrode plate 8 which is connected to the top or the bottom in the valve box 7 in a sliding manner is pushed to move towards the direction of the protection switch 72 at the top or the bottom in the valve box 7 until the protection switch 72 is started by extrusion, and the protection switch 72 is disconnected from the control chip 71 to conduct the current of the electrode plate 8, thereby playing the role of current-limiting protection.

In conclusion, when the camera does not work, the electrorheological fluid in the valve box 7 is in a flowable state, the output shaft 6, the rotating disc 2 and the driving shaft 9 are in a disconnected state, the micro motor 5 is protected, and meanwhile, the friction mechanism 11 fixes the horizontal position and the vertical position of the camera body 4; and when the valve box is in work, the friction mechanism 11 is loose and fixed, and the valve box 7 is controlled by the micro motor 5 and the control chip 71, so that independent rotation in the horizontal and vertical directions and control of rotation torque are realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A monitoring camera control holder comprises a mounting seat (1), and is characterized in that the bottom of the mounting seat (1) is coaxially and rotatably connected with a rotating disc (2), the bottom of the rotating disc (2) is fixedly connected with two supports (3), and a camera body (4) is rotatably connected between the two supports (3);

the electric valve is characterized in that a micro motor (5) is installed in the installation seat (1), an output shaft (6) is coaxially and fixedly connected with the output end of the micro motor (5), a valve box (7) is coaxially and fixedly installed in the rotating disc (2), three electrode plates (8) are connected in the valve box (7), electrorheological fluid is filled in the valve box (7), the three electrode plates (8) are electrically connected with a control chip (71), the control chip (71) is installed in the installation seat (1), one end, far away from the micro motor (5), of the output shaft (6) is coaxially and hermetically connected to the valve box (7) in a sealing manner, extends to the middle of the valve box and hermetically rotates to penetrate through the two electrode plates (8), a sealing bearing (73) is fixedly connected to the inner peripheral side of the bottom of the valve box (7) in a sealing manner, a driving shaft (9) is coaxially, the driving shaft (9) and the output shaft (6) are arranged in a clearance mode, one end, far away from the valve box (7), of the driving shaft is connected with a driving mechanism (10) through a gear set, the driving mechanism (10) is installed in the rotating disc (2) and the support (3), and the output end of the driving mechanism is connected with the two sides of the camera body (4);

all be provided with friction mechanism (11) between mount pad (1) and rolling disc (2) and support (3) and the body of making a video recording (4), friction mechanism (11) are including electrically conductive spring (111) and friction disc (112), a plurality of electrically conductive spring (111) of fixedly connected with on mount pad (1) and support (3), it is a plurality of electrically conductive spring (111) electric connection just keeps away from mount pad (1) and support (3) one end fixedly connected with friction disc (112) on control chip (71), friction disc (112) are supported and are leaned on rolling disc (2) and the body of making a video recording (4).

2. A monitoring camera control head according to claim 1, characterized in that the outer circumference of the output shaft (6), the inner circumference of the valve box (7) and the outer circumference of the drive shaft (9) are provided with protrusions (61), and a plurality of protrusions (61) are arranged with a gap therebetween.

3. A monitoring camera control head according to claim 1, characterized in that the valve box (7) is in a convex shape, and three electrode plates (8) are respectively located at the top, middle and bottom of the valve box (7), wherein the electrode plate (8) located at the middle is fixedly connected to the valve box (7), the electrode plates (8) located at the top and bottom are slidably connected to the valve box (7), and the electrorheological fluid is located between the three electrode plates (8).

4. A monitoring camera control head according to claim 3, characterized in that protection switches (72) are installed at the top and bottom of the valve box (7), and the protection switches (72) are existing extrusion switches and are electrically connected with the control chip (71).

5. A monitoring camera control pan-tilt according to claim 1, characterized in that, the actuating mechanism (10) includes a rotation shaft (101), a belt (102) and a belt pulley (103), the rotation shaft (101) is rotatably connected in the rotating disc (2) and connected with the driving shaft (9) through a gear set, one end of the rotation shaft (101) is sleeved with the belt (102), one end of the belt (102) far away from the rotation shaft (101) is sleeved with the belt pulley (103), the belt pulley (103) is rotatably connected in the bracket (3) and fixedly connected with one side of the camera body (4).