CN201116962Y - Monitoring camera convenient for fine adjustment of lens - Google Patents

Abstract

A monitoring camera convenient for fine adjustment of a lens comprises a main shell seat, a front cover, a bracket arranged in the main shell seat, a photographic device arranged at the center of the bracket and an adjusting device arranged at one side of the photographic device, wherein the bottom parts of the main shell seat and the front cover are provided with a hollow convex seat protruding downwards, the peripheral wall of the bracket is also provided with a convex plate part protruding in the convex seat, the front end of the convex seat of the front cover is provided with two adjusting holes, the adjusting device comprises a first sector gear, a second sector gear, a first adjusting gear, a second adjusting gear and a sealing cover, the first sector gear and the second sector gear are meshed with the first sector gear and the second sector gear, the sealing cover is sealed in the two adjusting holes, the first adjusting gear or the second adjusting gear can be adjusted by opening the sealing cover, so that the first sector gear or the second sector gear rotates to adjust the photographic focal length or the visual angle, the purpose of convenient adjustment is achieved, and the design of the sector gear can also make the space around the sector gear available.

Description

Surveillance camera for fine-tuning the lens

technical field

The utility model relates to an outdoor or indoor rain-proof device capable of photographing and transmitting images, in particular to a monitoring camera with a protective cover containing a manual zoom lens and a rain-proof integral shape for fine-tuning the lens.

Background technique

Surveillance cameras have the functions of monitoring, preventing crimes, and tracking criminal behaviors. Therefore, nowadays, surveillance cameras are installed on street corners, arcades, intersections, and public places to prevent crimes. Therefore, outdoor rainproof design is more important. .

Please refer to Fig. 6, the existing surveillance cameras are generally provided with a hollow main casing 70 opening forward, a front cover 71 covering the front end of the main casing 70, and a front cover 71 and the main casing 70. In the photographing device inside, a support 72 is provided at the near front end of the main housing base 70, and a circuit board 73 arranged with LEDs is fixed at intervals in front of the support 72, and the photographic lens device is located at the center of the support 72 and the circuit board 73. , and the photography device includes a lens group 80, a focus adjustment ring 81 and a viewing angle adjustment ring 82 sleeved outside the lens group 80, and a diameter is respectively provided on the annular peripheral walls of the focus adjustment ring 81 and the viewing angle adjustment ring 82. Towards the protruding focus adjustment column 83 and angle of view adjustment column 84, the focus adjustment column 83 and the angle of view adjustment column 84 can be moved to adjust the focal length of photography respectively, and to take wide-angle or long-shot photography.

In order to prevent the photographic device from being damaged by moisture, a sealing ring 74 is clamped between the front cover 71 and the main housing seat 70, and the entire surveillance camera has been assembled before leaving the factory. However, during installation or use, the focus and viewing angle need to be adjusted depending on the monitoring environment. When adjusting, the front cover 71 must be disassembled, and then the focus adjustment column 83 or the viewing angle adjustment column 84 should be turned. The cover is not only cumbersome to disassemble and assemble. Moreover, during adjustment, the entire photographic device is exposed to the air, and moisture will cause damage to the lens and electronic components.

Therefore, due to poor structural design, the existing monitoring camera device has the disadvantages that it is not easy to adjust, and the components are easily damaged by moisture, and there is indeed a need for further improvement.

Contents of the invention

In order to improve the above-mentioned shortcomings, the main purpose of the present invention is to provide a surveillance camera that is rain-proof, easy to adjust the angle of view and focus of the lens, and can effectively use the space.

Based on the above purpose, the main technical means of this utility model is to provide a surveillance camera that is convenient for fine-tuning the lens, including a hollow main housing, a front cover that fits on the front end of the main housing, and a Bracket, a photography device installed in the center of the bracket, the photography device further includes a lens group, a focal length adjustment ring, an angle of view adjustment ring, characterized in that:

The bottom of the main housing base and the front cover are respectively provided with a hollow protruding seat protruding downwards in the joint section. The two protruding seats communicate with the main housing base and the inside of the front cover respectively. Two adjustment holes whose axes are parallel to the lens group;

The bottom of the bracket is provided with a protruding plate extending downward and located in the protruding seat;

An adjustment device is provided, including a first sector gear, a second sector gear, a first adjustment gear, a second adjustment gear and a cover, wherein the cover is to cover the front end of the protruding seat of the front cover, And the cover is provided with studs that pass through the two adjustment holes. The first and second sector gears are respectively fixed on the ring-shaped outer peripheral edges of the focus adjustment ring and the viewing angle adjustment ring. The first adjustment gear and the second adjustment The gears are pivotally arranged on the protruding plate part, and mesh with the first and second sector gears respectively. The front centers of the first and second adjustment gears are respectively provided with an axially protruding first adjustment shaft and a second adjustment shaft. 1. The second adjustment shaft is respectively inserted into the two adjustment holes of the front cover. There are slots at the ends of the first and second adjustment shafts, and a sealing ring is sleeved on the first and second adjustment shafts respectively. The ring is pressed against the inner peripheral wall of the adjustment hole.

After implementing above-mentioned technical means, the concrete benefit that the utility model can obtain is:

1. It is convenient to adjust the focal length and viewing angle of photography: under the normal state of the utility model, the cover is used to close the two adjustment holes, and the first and second adjustment shafts are also tightly sealed on the inner peripheral wall of the adjustment hole by a sealing ring , Therefore, when the surveillance camera is installed at the beginning, or when it is necessary to adjust the focal length or angle of view after installation, just open the cover, insert a screwdriver tool into one of the adjustment holes, and insert it into the first adjustment axis or the second adjustment axis. In the groove, the first adjustment gear or the second adjustment gear can be rotated, and then the first sector gear or the second sector gear can be driven to rotate to adjust the focus adjustment ring or the angle of view adjustment ring, so the structural design of the present utility model can be used in Directly adjust the focal length and viewing angle of the lens group without removing the front cover.

2. It can prevent moisture from entering the main housing seat: since the first adjustment shaft, the second adjustment shaft and the adjustment hole are tightly sealed by the sealing ring, the moisture in the air will not enter when the cover is opened for adjustment. , so it is not only convenient for adjustment, but also prevents damage to components caused by internal moisture.

3. Effective use of space: Since the focus adjustment ring and the viewing angle adjustment ring of the present utility model have only a section of sector gear instead of a whole ring gear, the space outside the range of movement of the sector gear can be used again. For other components to install, its structural design has the characteristics of saving space.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional combined appearance of the utility model.

Fig. 2 is a three-dimensional exploded schematic diagram of the utility model.

Fig. 3 is an enlarged schematic diagram of a side view section of the utility model.

Fig. 4 is a schematic diagram of a combined front view section of the utility model.

Fig. 5 is a front-view composite cross-sectional schematic diagram when the utility model is adjusted.

FIG. 6 is an exploded perspective view of a conventional surveillance camera.

Detailed ways

Please refer to Figs. 1 to 4 at the same time, the surveillance camera for fine-tuning the lens provided by the utility model still has a main housing base 10 and a front cover 20 that fit each other the same as existing products, and the main housing base 10 and the front cover 20 A photographic device 30 is installed inside the front cover 20. Only, in order to improve the shortcomings of existing products, the utility model is further provided with an adjustment device 40 on one side of the photographic device 30, and the shape of the main housing seat 10 and the front cover 20 is used as A change.

The peripheral walls of the main housing base 10 and the front cover 20 are located on the adjacent section. A hollow protruding seat 11, 21 protruding downward is respectively provided in this section. The two protruding seats 11, 21 communicate with the main housing base 10 and the front cover 20 respectively. , and the protrusion 11 on the main housing 10 opens forward, and the protrusion 21 on the front cover 20 opens to the rear. The middle section of the front end of the protrusion 21 of the front cover 20 is provided with a concave recess 210 to make it The two sides protrude forward, and the front ends of the two protruding positions are respectively provided with an adjustment hole 211 axially parallel to the lens group 31 . In addition, a circular plate-shaped bracket 15 is fixed inside the main housing base 10, and a circuit board 17 is fixed at intervals in front of the bracket 15. The bottom of the bracket 15 is provided with a protruding plate portion 151 extending downward, and the protruding plate portion 151 is correspondingly located in the protruding seat 11. .

The photographing device 30 includes a lens group 31, a focus adjustment ring 310 and an angle of view adjustment ring 311 sleeved on the ring-shaped outer periphery of the lens group 31, and the focus adjustment ring 310 and the angle of view adjustment ring 311 are located between the bracket 15 and the angle of view adjustment ring 311. between circuit boards 17.

The adjustment device 40 includes a first sector gear 41, a second sector gear 42, a first adjustment gear 43, a second adjustment gear 44 and a cover 46, wherein the first sector gear 41, The second sector gear 42 is fixed on the ring-shaped outer periphery of the focus adjustment ring 310 and the viewing angle adjustment ring 311 respectively. The sector gear 41 and the second sector gear 42 mesh, and the centers of the front ends of the first and second adjustment gears 43 and 44 are respectively provided with an axially protruding first adjustment shaft 431 and a second adjustment shaft 441. The shafts 431, 441 are jointly placed on a connecting plate 47, and a sealing ring 45 is sleeved on the first and second adjustment shafts 431, 441 respectively. The inner peripheral wall of the cover 46 is correspondingly located at the front end of the protruding seat 21 of the front cover 20, and its rear end is provided with two protruding pillars 460, and a protruding portion 461 between the two protruding pillars 460, The centers of the two protruding columns 460 are respectively provided with an axially recessed through hole for the first adjustment shaft 431 and the second adjustment shaft 441 to pass through the inside of the protruding column 460 respectively, and the first adjustment shaft 431 and the second adjustment shaft The ends of 441 are respectively provided with a groove for tool insertion.

Under normal conditions, the cover 46 is used to close the two adjustment holes 211, and the interior of the two adjustment holes 211 is also tightly sealed by the sealing ring 45. When the surveillance camera is installed at the beginning, or after installation, it is necessary to adjust the focal length or viewing angle of the camera. As long as the cover 46 is opened, a screwdriver tool is inserted into one of the adjustment holes 211, and inserted into the slot of the first adjustment shaft 431 or the second adjustment shaft 441, the first adjustment gear 43 or The second adjustment gear 44 rotates, and then drives the first sector gear 41 or the second sector gear 42 to rotate, so as to rotate together with the focal length adjustment ring 310 or the viewing angle adjustment ring 311 shown in FIG. .

And because the first adjustment shaft 431, the second adjustment shaft 441 and the adjustment hole 211 are pressed tightly by the sealing ring 45, therefore, when the cover 46 is opened for adjustment, the moisture in the air will not enter, so it is not only convenient to adjust , It can also avoid damage to components caused by internal moisture.

And because the focus adjustment ring and the viewing angle adjustment ring of the present utility model only have a section of sector gear, therefore, the space between the bracket and the circuit board can be used again for the installation of other components, and its structural design has the advantages of saving space. features.

Claims (5)

1. A monitoring camera for convenient fine-tuning of the lens, comprising a hollow main housing, a front cover that covers the front end of the main housing, a bracket fixed in the main housing, and a photographic device installed in the center of the bracket, The photography device further includes a lens group, a focal length adjustment ring, and an angle of view adjustment ring, and is characterized in that: The bottom of the main housing base and the front cover are respectively provided with a hollow protruding seat protruding downwards in the joint section. The two protruding seats communicate with the main housing base and the inside of the front cover respectively. Two adjustment holes whose axes are parallel to the lens group; The bottom of the bracket is provided with a protruding plate extending downward and located in the protruding seat; An adjustment device is provided, which includes a first sector gear, a second sector gear, a first adjustment gear, a second adjustment gear and a cover, wherein the cover is closed on the front end of the protruding seat of the front cover , and the cover is provided with studs that pass through the two adjustment holes, the first and second sector gears are respectively fixed on the ring-shaped outer peripheral edges of the focus adjustment ring and the viewing angle adjustment ring, the first adjustment gear and the second The adjustment gear is pivotally arranged on the protruding plate portion, and meshes with the first and second sector gears respectively. The center of the front end of the first and second adjustment gears is respectively provided with an axially protruding first adjustment shaft and a second adjustment shaft. The first and second adjustment shafts respectively pass through the two adjustment holes of the front cover. The ends of the first and second adjustment shafts are provided with slots, and a sealing ring is sleeved on the first and second adjustment shafts respectively. The sealing ring is pressed against the inner peripheral wall of the adjustment hole. 2 . The surveillance camera for convenient fine-tuning of the lens according to claim 1 , wherein an axially recessed through hole is provided at the center of the end of the stud of the cover for the first and second adjustment shafts to pass through. 3 . 3. The monitoring camera for fine-tuning the lens according to claim 1 or 2, characterized in that: a concave recess is provided in the middle of the front end of the protrusion of the front cover, and a protrusion matching the recess is provided on the cover. 4. The monitoring camera for convenient fine-tuning of the lens according to claim 1 or 2, characterized in that: a connecting plate is set, the first adjustment shaft and the second adjustment shaft are jointly placed on the connecting plate, and the connecting plate is fixed on the stand. 5. The monitoring camera for convenient fine-tuning of the lens as claimed in claim 3, characterized in that: a connecting plate is provided, the first adjustment shaft and the second adjustment shaft pass through the connecting plate, and the connecting plate is fixed on the bracket superior.

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