CN208540022U - A kind of camera back focus is away from fast adjuster - Google Patents
A kind of camera back focus is away from fast adjuster Download PDFInfo
- Publication number
- CN208540022U CN208540022U CN201821223123.1U CN201821223123U CN208540022U CN 208540022 U CN208540022 U CN 208540022U CN 201821223123 U CN201821223123 U CN 201821223123U CN 208540022 U CN208540022 U CN 208540022U
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- away
- guide post
- rear cover
- back focus
- gib block
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Abstract
The utility model discloses a kind of camera back focus away from fast adjuster, including rear cover, the rear cover quadrangle is respectively provided with first guide post, and cam holder is arranged in first guide post, and first guide post is outer to be arranged with spring between the rear cover and cam holder；It is provided with the gib block of arc on the cam holder on one side away from the rear cover, is gradually decreased at the top of the gib block along bar shaped extending direction；It is connected with focusing wheel on the cam holder, the first groove with gib block cooperation is provided on the focusing wheel side, is cooperated at the top of first bottom portion of groove and the gib block, first groove length is greater than the gib block.The utility model adjusting is accurate, easy to operate, stable structure, easily assembles, is hardly damaged, is easy to assembly.
Description
Technical field
The utility model relates to a kind of focal length adjustment devices, more particularly to a kind of back focal length fast adjuster.
Background technique
Video camera is applied to our life more and more widely, especially in security protection, traffic control field, passes through video camera pair
Ambient enviroment is monitored, to safeguard residential security and traffic order.But present camera back focus is away from being fixed,
It cannot change in use, cause inconvenient to use；Some video cameras do not adjust the position CDD when leaving the factory；Or
During installation, there is error etc.；In face of these situations, adjusting back focal length is required.Currently, also have using electromotion focusing, but
Power-driven focusing mechanism is at high cost, complicated for operation.
Therefore those skilled in the art be dedicated to developing a kind of accurate adjustment camera back focus away from fast adjuster, behaviour
Work is simple, stable structure, is hardly damaged, is easy to assembly.
Utility model content
In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide a kind of accurate tune
Whole camera back focus away from fast adjuster, easy to operate, stable structure is hardly damaged, is easy to assembly.
To achieve the above object, the utility model provides a kind of camera back focus away from fast adjuster, including rear cover,
The rear cover quadrangle is respectively provided with first guide post, and cam holder, first guide post are arranged in first guide post
Spring is arranged between the rear cover and cam holder outside；It is provided with leading for arc on one side away from the rear cover on the cam holder
To item, gradually decreased at the top of the gib block along bar shaped extending direction；Focusing wheel, the tune are connected on the cam holder
It is provided with the first groove with gib block cooperation on burnt wheel side, matches at the top of first bottom portion of groove and the gib block
It closes, first groove length is greater than the gib block.
It is covered with outer cover preferably, covering after described, the invagination for the focusing wheel protrusion is provided on the outer cover sidewall
Hole.
Preferably, being provided with the second guide post on the inside of the outer cover, it is provided on the focusing wheel and second guiding
Second groove of column cooperation.
Preferably, being provided with arc positioning strip on the inside of the outer cover, the arc positioning strip is resisted against in the focusing wheel
It is consistent to take turns inside radian with the focusing for side.
Preferably, being provided with the fixation hole for assembling first guide post on the inside of the outer cover；Outside first guide post
Washer is arranged in described outer cover one end.
Preferably, being provided with the dustproof cover for covering the invagination hole on the outer cover sidewall.
Preferably, being connected with wire ring and photosensitive element assembly to the rear cover direction on the cam holder；Wherein, the silk
Circle is stretched out from cam and the outer cover.
Preferably, being uniformly arranged on one side away from the rear cover there are three arcuate guide item on the cam holder.
The beneficial effects of the utility model are: the utility model adjusts accurate, easy to operate, stable structure, easily assembles, no
It is easy to damage, easy to assembly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one specific embodiment of the utility model.
Fig. 2 is the backsight structural representation of one specific embodiment of the utility model.
Fig. 3 is the schematic diagram of internal structure of one specific embodiment outer cover of the utility model.
Fig. 4 is one specific embodiment assembling structure schematic diagram of the utility model.
Fig. 5 is the structural schematic diagram that the assembly of one specific embodiment of the utility model is completed.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, it should be noted that, in the description of the present invention,
The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, construct and operate in a particular manner, therefore be not considered as limiting the invention.Term " the
One ", " second ", " third " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Figures 1 to 4, a kind of camera back focus is respectively provided with away from fast adjuster, including rear cover 1,1 four jiaos of rear cover
One the first guide post 11, cam holder 12 is arranged in the first guide post 11, and the first guide post 11 is outer in rear cover 1 and cam holder 12
Between be arranged with spring 13.It is provided with the gib block 14 of arc on cam holder 12 on one side away from rear cover 1,14 top of gib block is along item
Shape extending direction gradually decreases.In the present embodiment, it is uniformly arranged on one side away from rear cover 1 there are three arcuate guide item on cam holder 12
14.Focusing wheel 2 is connected on cam holder 12, focusing wheel is provided with the first groove 21 cooperated with gib block 14 on 2 sides,
Cooperate at the top of first groove, 21 bottom and gib block 14,21 length of the first groove is greater than gib block 14.
It is covered with outer cover 3 on rear cover 1, the invagination hole 15 for 2 protrusion of focusing wheel is provided on 3 side wall of outer cover.On 3 side wall of outer cover
It is provided with the dustproof cover 151 in covering invagination hole 15, in the present embodiment, dustproof cover 151 is screwed on outer cover 3.Dustproof cover
151 use is first is that dust-proof and interception can be played；Two can be prevented from user or other articles touch focusing wheel 2 makes
Focal length changes.It is provided with the second guide post 31 on the inside of outer cover 3, is provided on focusing wheel 2 and the cooperation of the second guide post 31
Second groove 22.The positioning strip 32 of arc is provided on the inside of outer cover 3, the positioning strip 32 of arc is resisted against 2 inside of focusing wheel, with tune
Coke 2 inside radians of wheel are consistent.Position for fixed focusing wheel 2.
The fixation hole 33 of the first guide post 11 of assembly is provided on the inside of outer cover 3.First guide post 11 is outer in 3 one end cap of outer cover
Equipped with washer 17.
Successively there are wire ring 41 and photosensitive element assembly 42 to 1 direction of rear cover on cam holder 12.Wherein, wire ring 41 is from cam
It is stretched out in (not shown) and outer cover 3.
The utility model is in assembly, and each component such as outer cover 3 and focusing wheel the 2, first guide post 11 and outer cover 3 etc. can
Preferably positioning, quick assembling, and it is highly stable, it in use or carrying process, is resistant to jolt, rock, have preferable
Stability.
When utility model works, wire ring 41 is connected with Liar, 1 one end of rear cover is connected with video camera, rotation
The part focusing wheel 2 protruded from invagination hole 15, focusing wheel 2 generates rotary motion, because first groove 21 resists guiding on focusing wheel 2
Item 14, and the end surface inclination cooperation of the opposite contact of the two, so 14 band of gib block can be made by focusing wheel 2 forward or reverse
Moving cam frame 12, wire ring 41 and photosensitive element assembly 42 all generate axial linear motion, so as to accurate adjusting back focal length,
Wherein, the first guide post 11 provides guiding role, and is not easy to loosen after adjusting.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of camera back focus is away from fast adjuster, including rear cover (1), it is characterized in that: the rear cover (1) quadrangle is respectively provided with
One the first guide post (11) is arranged with cam holder (12) on first guide post (11), and first guide post (11) is outside
Spring (13) are arranged between the rear cover (1) and cam holder (12)；Deviate from the rear cover (1) one on the cam holder (12)
Face is provided with the gib block (14) of arc, gradually decreases at the top of the gib block (14) along bar shaped extending direction；The cam holder
(12) it is connected with focusing wheel (2) on, first with the gib block (14) cooperation is provided on the focusing wheel (2) side
Groove (21), the first groove (21) bottom and the gib block (14) top cooperate, and the first groove (21) length is big
In the gib block (14).
2. camera back focus as described in claim 1 is away from fast adjuster, it is characterized in that: being covered on the rear cover (1) outer
It covers (3), the invagination hole (15) for focusing wheel (2) protrusion is provided on outer cover (3) side wall.
3. camera back focus as claimed in claim 2 is away from fast adjuster, it is characterized in that: setting on the inside of the outer cover (3)
Have the second guide post (31), the second groove (22) with second guide post (31) cooperation is provided on the focusing wheel (2).
4. camera back focus as claimed in claim 2 is away from fast adjuster, it is characterized in that: setting on the inside of the outer cover (3)
Have arc positioning strip (32), the arc positioning strip (32) is resisted against on the inside of the focusing wheel (2), in focusing wheel (2)
Side radian is consistent.
5. camera back focus as claimed in claim 2 is away from fast adjuster, it is characterized in that: setting on the inside of the outer cover (3)
There is the fixation hole (33) for assembling first guide post (11)；First guide post (11) is outside in (3) one end cap of outer cover
Equipped with washer (17).
6. camera back focus as claimed in claim 2 is away from fast adjuster, it is characterized in that: being set on the outer cover (3) side wall
It is equipped with the dustproof cover (151) for covering invagination hole (15).
7. the camera back focus as described in claim 2 to 6 is any is away from fast adjuster, it is characterized in that: the cam holder
(12) wire ring (41) and photosensitive element assembly (42) are connected with to the rear cover (1) direction on；Wherein, the wire ring (41) is from convex
It takes turns in (16) and the outer cover (3) and stretches out.
8. the camera back focus as described in claim 1 to 6 is any is away from fast adjuster, it is characterized in that: the cam holder
(12) it is uniformly arranged on one side away from the rear cover (1) there are three arcuate guide item (14) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821223123.1U CN208540022U (en) | 2018-07-31 | 2018-07-31 | A kind of camera back focus is away from fast adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821223123.1U CN208540022U (en) | 2018-07-31 | 2018-07-31 | A kind of camera back focus is away from fast adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208540022U true CN208540022U (en) | 2019-02-22 |
Family
ID=65386355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821223123.1U Active CN208540022U (en) | 2018-07-31 | 2018-07-31 | A kind of camera back focus is away from fast adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208540022U (en) |
-
2018
- 2018-07-31 CN CN201821223123.1U patent/CN208540022U/en active Active
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