CN203405656U

CN203405656U - Camera rear focal length adjusting apparatus

Info

Publication number: CN203405656U
Application number: CN201320364556.XU
Authority: CN
Inventors: 艾军; 李军; 程时毅
Original assignee: Shenzhen Infinova Ltd
Current assignee: Shenzhen Infinova Ltd
Priority date: 2013-06-24
Filing date: 2013-06-24
Publication date: 2014-01-22
Anticipated expiration: 2023-06-24

Abstract

The utility model discloses a camera rear focal length adjusting apparatus, which comprises a housing, a lens, a PCB board and a CCD. A fixing frame is fixed inside the housing. A motor is fixed on the rear end of the fixing frame. Guiding columns are arranged on the front of the fixing frame. Springs are sleeved on the outer sides of the guiding columns. A tray is connected on the guiding columns. The PCB board is fixed on the tray. The motor shaft of the motor is provided with threads. The motor shaft passes through the fixing frame and is inserted into the tray. The tray part where the motor shaft is inserted is provided with a recessed hole. A positioning member with a shape matching that of the recessed hole is further arranged. The positioning member is arranged on the threads of the motor shaft and fixed inside the recessed hole. By means of the rotation of the motor shaft, the positioning member can move on the threads of the motor shaft and further drive the tray to move back and forth. The distance between the CCD arranged on the tray through the PCB board and the lens is thus precisely adjusted. An automatic camera rear focal length adjusting function is thus achieved. Furthermore, the apparatus has the characteristics of simple compact structure, high control precision and simple use.

Description

The burnt regulating device of gunlock back

Technical field

The utility model relates to the burnt regulating device of a kind of gunlock back.

Background technology

Gunlock is a kind of in monitoring class ccd video camera, with C/CS lens interface.Back Jiao also claims back focal length or back of the body focal length, refers to when installing standard C/CS interface camera lens, and interface plane becomes the distance on the target surface of ccd image sensor just with making the imaging of subject.

Due to the difference of back Jiao between video camera CCD target surface injustice and different camera lenses, add after gunlock uses a period of time that easily race is burnt, so the back of gunlock Jiao needs often adjusting, but gunlock back Jiao's adjusting is normally manual, it is very inconvenient to use.

Utility model content

The technical matters that the utility model mainly solves is to provide the burnt regulating device of a kind of gunlock back, can automatically regulate gunlock back burnt.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of gunlock back burnt regulating device, comprise housing, be fixed on camera lens outside housing, be arranged on the pcb board in housing and be fixed on the CCD on pcb board, in described housing, be fixed with a fixed mount, the rear end of described fixed mount is fixed with a motor, the front end of fixed mount is provided with at least two guideposts, described guidepost is socketed with spring outward, on this guidepost, be connected with slidably a pallet, described pcb board is fixed on this pallet; The motor shaft of described motor is provided with screw thread, described motor shaft stretches in pallet through fixed mount, on the position that pallet stretches at this motor shaft, be provided with a shrinkage pool, also be provided with a keeper matching with the shape of described shrinkage pool, described keeper can be arranged on the screw thread of motor shaft and be fixed in shrinkage pool, by the rotation of motor shaft, keeper can move on the screw thread of motor shaft, thereby drives pallet to move forward and backward.

Wherein, described pallet is provided with a catch, and it is outer for preventing that keeper from deviating from that described catch is fixed on described shrinkage pool, and catch is provided with a through hole so that described motor shaft passes therethrough.

Wherein, between described pcb board and camera lens, in the inner space of housing, be fixed with successively shielding plate and optical filter.

Wherein, between described fixed mount and pallet, be also provided with at least two location sensitive sheets.

The beneficial effects of the utility model are: the drive pallet by motor can seesaw, make to be arranged on CCD on pallet and the distance between camera lens is made accurate adjustment by pcb board, thereby realize the function of automatically adjusting gunlock back Jiao, this is simple in structure, tightly beat, and control accuracy is high and easy to use.

Accompanying drawing explanation

Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model;

Fig. 2 is cut-open view of the present utility model.

Main element symbol description: 1, camera lens; 2, housing; 3, shielding plate; 4, optical filter; 5, pcb board; 6, CCD; 7, catch; 8, pallet; 9, spring; 10, guidepost; 11, primary importance sensing chip; 12, second place sensing chip; 13, fixed mount; 14, motor.

Embodiment

By describing technology contents of the present utility model, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.

Refer to Fig. 1 and Fig. 2, present embodiment is the burnt regulating device of a kind of gunlock back, comprises housing 2, is fixed on camera lens 1 outside housing 2, is arranged on the pcb board 5 in housing 2 and is fixed on the CCD6 on pcb board 5.

In described housing 2, be fixed with a fixed mount 13, the rear end of described fixed mount 13 is fixed with a motor 14, and the front end of fixed mount 13 is provided with three guideposts 10, the outer spring 9 that is socketed with of described guidepost 10, on guidepost 10, be connected with slidably a pallet 8, described pcb board 5 is fixed on this pallet 8.

The motor shaft of described motor 14 is provided with screw thread, described motor shaft passes fixed mount 13 and stretches in pallet 8, on the position that pallet 8 stretches at this motor shaft, be provided with a shrinkage pool, also be provided with a keeper matching with the shape of this shrinkage pool, described keeper can be arranged on the screw thread of motor shaft and be fixed in shrinkage pool, at described shrinkage pool, be provided with a catch 7 outward, this catch 7 can be used for preventing that keeper from deviating from, and catch 7 is provided with a through hole so that motor shaft passes therethrough.By the rotation of motor shaft, keeper can move on the screw thread of motor shaft, thereby drives pallet 8 to move forward and backward.8, described fixed mount 13 and pallet are also provided with primary importance sensing chip 11 and second place sensing chip 12, and primary importance sensing chip 11 and second place sensing chip 12 can be used for detecting the distance that motor 14 drives pallet 8 to move.

Preferably, between described pcb board 5 and camera lens 1, in the inner space of housing 2, be fixed with successively shielding plate 3 and optical filter 4.

Principle of the present utility model is as follows: CCD6 is welded on pcb board 5, pcb board 5 is fixed on pallet 8, pallet 8 is slidably mounted on the guidepost 10 of fixed mount 13, when starting, motor 14 can carry out by the rotation of its motor shaft running fix part, thereby keeper and pallet 8 are fixed and can be driven pallet 8 to move forward and backward, and detect displacement by primary importance sensing chip 11 and second place sensing chip 12, make the distance between CCD6 and camera lens 1 can go out accurate adjustment, thereby realize the function of adjusting gunlock back Jiao.

The beneficial effects of the utility model are: the drive pallet by motor can seesaw, make the distance between CCD and camera lens make accurate adjustment, thereby realize the function of automatically adjusting gunlock back Jiao, this is simple in structure, tightly beat, and control accuracy is high and easy to use.

The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. the burnt regulating device of a gunlock back, comprise housing, be fixed on camera lens outside housing, be arranged on the pcb board in housing and be fixed on the CCD on pcb board, it is characterized in that, in described housing, be fixed with a fixed mount, the rear end of described fixed mount is fixed with a motor, and the front end of fixed mount is provided with at least two guideposts, and described guidepost is socketed with spring outward, on this guidepost, be connected with slidably a pallet, described pcb board is fixed on this pallet; The motor shaft of described motor is provided with screw thread, described motor shaft stretches in pallet through fixed mount, on the position that pallet stretches at this motor shaft, be provided with a shrinkage pool, also be provided with a keeper matching with the shape of described shrinkage pool, described keeper can be arranged on the screw thread of motor shaft and be fixed in shrinkage pool, by the rotation of motor shaft, keeper can move on the screw thread of motor shaft, thereby drives pallet to move forward and backward.

2. the burnt regulating device of gunlock back according to claim 1, it is characterized in that: described pallet is provided with a catch, it is outer for preventing that keeper from deviating from that described catch is fixed on described shrinkage pool, and catch is provided with a through hole so that described motor shaft passes therethrough.

3. the burnt regulating device of gunlock back according to claim 1, is characterized in that: between described pcb board and camera lens, in the inner space of housing, be once fixed with shielding plate and optical filter.

4. the burnt regulating device of gunlock back according to claim 1, is characterized in that: between described fixed mount and pallet, be also provided with at least two location sensitive sheets.