CN115616838A - Voltage stabilizer and camera of closed cavity - Google Patents

Abstract

The invention relates to the technical field of air tightness, in particular to a pressure stabilizing device of a closed cavity and a camera. The invention discloses a pressure stabilizing device and a camera for a closed cavity, wherein the pressure stabilizing device for the closed cavity comprises a cylinder, a sliding part and an elastic part, the cylinder is provided with a movable cavity, the first end of the movable cavity is communicated with the sealed cavity, the second end of the movable cavity is communicated with the outside of the sealed cavity, the sliding part and the elastic part are arranged in the movable cavity, the sliding part can axially and hermetically move between the first end and the second end of the movable cavity, and the elastic part is used for applying a resetting force to the sliding part to move towards the first end. The pressure stabilizing device for the closed cavity can keep the air pressure of the closed cavity basically stable when the external temperature changes, thereby improving the air tightness of the closed cavity, prolonging the service life of a product, and having simple structure and easy realization.

Description

Voltage stabilizer and camera of closed cavity

Technical Field

The invention belongs to the technical field of air tightness, and particularly relates to a pressure stabilizing device and a camera of a closed cavity.

Background

At present, due to the importance of people on security protection and the civilization of the price of an intelligent camera, products in the field gradually become standard in life; with the rapid development of modern technology, the digital wireless monitoring gradually replaces the traditional analog wireless monitoring, and occupies an important position in the security market.

The security protection is an important infrastructure of the modern society, along with the development of modern science and technology, the number of cameras popular in the market is increased, and a vehicle-mounted camera, an electronic camera and a camera used on a mobile phone are indispensable. The existing security camera is exposed outside for a long time, and is exposed to wind, sunshine and special environments such as rain, high temperature and the like, so that the air tightness design of the camera is particularly important.

It is well known, the camera intakes and causes easily that the picture of shooing is unclear, the condition such as circuit short circuit, this problem is solved to the waterproof design that also has a lot of at present, but the camera is under the high temperature condition, because the temperature constantly risees, thereby make inside pressure increase along with the temperature increase, thereby form great pressure differential with outside atmospheric pressure, gaseous toward arranging outward, after the temperature reduction, inside pressure reduces, the outside gas that has humidity will enter into inside the equipment, thereby lead to the camera lens to play fog, steam influences the circumstances such as circuit life-span. It is known that in the current market, most products solve the problem by adding a breathable film to the camera, but the breathable film cannot well prevent the water vapor from entering.

Disclosure of Invention

The invention aims to provide a pressure stabilizing device for a closed cavity to solve the technical problems.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a pressure stabilizer of closed cavity, includes barrel, slider and elastic component, and the barrel has a movable chamber, and the first end and the seal chamber intercommunication in movable chamber, the second end and the external world intercommunication of seal chamber in movable chamber, and slider and elastic component setting are in movable chamber, and the slider can be in the axial seal removal between the first end in movable chamber and second end, and the elastic component is used for exerting the reset force towards first end removal for the slider.

Further, still include waterproof ventilated membrane, waterproof ventilated membrane sets up on the second end in activity chamber.

Furthermore, the cylinder is of a cylindrical structure, and the first end surface and the second end surface of the cylinder are provided with openings to form a first end and a second end of the movable cavity.

Furthermore, the waterproof breathable film is fixedly adhered to the second end face of the cylinder body.

Further, the sliding member is a disk.

Further, the elastic piece is a compression spring, and the compression spring is arranged between the sliding piece and the second end face of the cylinder body.

Furthermore, the device also comprises a fixed support, the fixed support is arranged in the opening of the second end face of the cylinder, and the compression spring is fixedly abutted against the fixed support.

Further, the cylinder body is fixed with a shell of the closed cavity in a threaded connection mode.

Furthermore, a sealing adhesive is added at the screwed joint of the cylinder and the shell.

The invention also discloses a camera which is provided with the pressure stabilizing device of the closed cavity, wherein the closed cavity is the cavity of the camera barrel.

The invention has the beneficial technical effects that:

the pressure stabilizing device for the closed cavity can keep the air pressure of the closed cavity basically stable when the external temperature changes, and avoid the external water vapor from entering the closed cavity due to the large pressure difference formed between the closed cavity and the external atmospheric pressure, thereby improving the air tightness of the closed cavity, prolonging the service life of a product, and having simple structure and easy realization.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings may be obtained based on these drawings without creative efforts.

FIG. 1 is a block diagram of a camera head in accordance with an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a camera head in accordance with an embodiment of the present invention;

FIG. 3 is a block diagram of a camera with a voltage regulator omitted in accordance with an embodiment of the present invention;

FIG. 4 is a diagram of a pressure stabilizer for an enclosed cavity according to an embodiment of the present invention;

FIG. 5 is an exploded view of a closed chamber pressure stabilizer according to an embodiment of the present invention;

FIG. 6 is an exploded view of another perspective of a closed chamber voltage regulator apparatus according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of an initial state of a closed-cavity pressure stabilizer according to an embodiment of the present invention;

fig. 8 is a sectional view showing a moving state of a slider of the pressure stabilizer for a closed cavity according to the embodiment of the present invention.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. The components in the drawings are not necessarily to scale, and similar reference numerals are generally used to identify similar components.

The invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 8, a pressure stabilizer 1 for a closed cavity includes a cylinder 11, a sliding member 12 and an elastic member 13, in this embodiment, the closed cavity is a cavity 21 of a camera cylinder 2, but is not limited thereto, and in some embodiments, the closed cavity may also be a closed cavity of other products with air tightness requirement.

The barrel 11 has a movable cavity 111, a first end 1111 (an upper end in this embodiment, taking fig. 2 as a direction reference) of the movable cavity 111 is communicated with the cavity 21 of the camera barrel 2, a second end 1112 (a lower end) of the movable cavity 111 is communicated with the outside atmosphere of the cavity 21 of the camera barrel 2, the slider 12 and the elastic member 13 are disposed in the movable cavity 111, the slider 12 can move in a sealing manner in an axial direction (up and down direction) between the first end 1111 and the second end 1112 of the movable cavity 111, and the elastic member 13 is used for applying a restoring force to the slider 12 moving toward the first end 1111.

In this embodiment, the cylinder 11 is a cylindrical structure, and the first end 1111 and the second end 1112 forming the movable cavity 111 are opened on the first end surface and the second end surface of the cylinder 11, so that the structure is simple and compact, the implementation is easy, and the sealing performance of the slider 12 during the sealing movement is better. But not limited thereto, in some embodiments, the outer contour of the cross section of the cylinder 11 may also be an ellipse, a polygon, or other shapes; the second end 1112 of the movable chamber 111 may also be disposed on the sidewall of the barrel 11 near the second end face.

Preferably, in this embodiment, the sliding member 12 is a circular plate, which is more compact and light, consumes less material, and has low cost, but not limited thereto. The slider 12 may be made of rubber, plastic, or the like.

In this embodiment, the elastic member 13 is preferably a compression spring 131, and the compression spring 13 is disposed between the slider 12 and the second end surface of the cylinder 11. The compression spring 131 is simple in structure, easy to implement, and low in cost, but is not limited thereto, and in some embodiments, the elastic element 13 may also be implemented by an elastic sheet, a tension spring, or the like.

Further, in this embodiment, the fixing bracket 14 is further included, the fixing bracket 14 is disposed in the opening of the second end face of the cylinder 11, the first end of the compression spring 131 is fixed on the sliding member 12, the second end of the compression spring 131 is fixed to abut against the fixing bracket 14, and the fixing bracket 14 is adopted, so that the structure is simple and light, and is easy to implement.

In this embodiment, further include waterproof ventilated membrane 15, waterproof ventilated membrane 15 sets up on the second end 1112 in activity chamber 111 and seals the second end 1112 in activity chamber 111, through setting up waterproof ventilated membrane 15 for steam can not get into in the activity chamber 111, consequently can not get into the cavity 21 of camera barrel 2 through slider 12 even more, further promotes the reliability.

Specifically, in this embodiment, the waterproof air-permeable membrane 15 is adhered and fixed to the second end face of the cylinder 11 and the fixing bracket 14, which is simple and convenient to operate and low in cost, but not limited thereto.

Preferably, in this embodiment, the first end of the barrel 11 is fixed to the camera barrel 2 (the housing of the closed cavity) through threaded connection, which not only facilitates the detachment but also does not change the original camera structure. Specifically, the camera barrel 2 is provided with a threaded hole 22 communicating with the cavity 21 of the camera barrel 2, an external thread (not shown in the figure) is arranged on the outer side wall of the first end of the barrel 11, and the first end of the barrel 11 is screwed in the threaded hole 22.

Further, in this embodiment, a sealing adhesive (not shown) such as UV glue or silica gel is further added between the first end of the barrel 11 and the threaded hole 22, so that air cannot enter the cavity 21 of the camera barrel 2 through the joint, and the air tightness is further improved.

As shown in fig. 1 and 2, the invention also discloses a camera, which is provided with the pressure stabilizer 1 with the closed cavity, wherein the closed cavity is a cavity 21 of the camera cylinder 2.

Under the condition of high temperature, along with the rise of the external temperature, the temperature in the cavity 21 of the camera cylinder 2 rises, so that the pressure intensity of the cavity 21 of the camera cylinder 2 also increases, the pressure intensity of the cavity 21 of the camera cylinder 2 is greater than the external atmospheric pressure to form a pressure difference, the pressure difference acts on the sliding block 12 to generate a downward acting force, the sliding block 12 is pushed to move downwards to overcome the elastic force of the compression spring 131, as shown in fig. 8, so that the integral volume of the gas in the cavity 21 of the camera cylinder 2 is increased, the pressure intensity of the cavity 21 of the camera cylinder 2 is reduced, and the pressure intensity of the cavity 21 of the camera cylinder 2 is kept basically stable; when the external temperature decreases, the temperature in the cavity 21 of the camera cylinder 2 also decreases, the pressure in the cavity 21 of the camera cylinder 2 decreases, so that the downward acting force acting on the sliding block 12 also decreases, the compression spring 131 pushes the sliding block 12 to move upward, the overall volume of the gas in the cavity 21 of the camera cylinder 2 decreases, the pressure in the cavity 21 of the camera cylinder 2 increases and remains substantially stable, and when the external pressure is the same as the pressure in the cavity 21 of the camera cylinder 2, the sliding block 12 returns to the original state, as shown in fig. 7. Thereby realize when ambient temperature changes, make the atmospheric pressure of the cavity 21 of camera barrel 2 keep stable basically, avoid the cavity 21 of camera barrel 2 and outside atmospheric pressure to form great pressure differential, lead to outside steam to get into in the cavity 21 of camera barrel 2 to promote the gas tightness of the cavity 21 of camera barrel 2, prolong the life of camera, and simple structure easily realizes.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a voltage regulator device of closed cavity which characterized in that: including barrel, slider and elastic component, the barrel has a movable chamber, and the first end and the seal chamber intercommunication in movable chamber, the second end in movable chamber and seal chamber's external intercommunication, and slider and elastic component set up in movable chamber, and the slider can be in the movable chamber between the first end and the second end along axial seal removal, and the elastic component is used for applying the restoring force towards first end removal for the slider.

2. The closed cavity pressure stabilizer according to claim 1, wherein: still include waterproof ventilated membrane, waterproof ventilated membrane sets up on the second end in activity chamber.

3. The closed cavity pressure stabilizer according to claim 2, wherein: the cylinder is of a cylindrical structure, and the first end face and the second end face of the cylinder are provided with openings to form a first end and a second end of the movable cavity.

4. The closed cavity pressure stabilizer according to claim 3, wherein: the waterproof breathable film is fixedly bonded on the second end face of the cylinder body.

5. The closed cavity pressure stabilizer according to claim 3, wherein: the sliding part is a circular plate.

6. The closed cavity pressure stabilizer according to claim 3, wherein: the elastic piece is a compression spring which is arranged between the sliding piece and the second end face of the cylinder body.

7. The closed cavity pressure stabilizer according to claim 6, wherein: the fixing support is arranged in an opening of the second end face of the cylinder body, and the compression spring is fixedly abutted against the fixing support.

8. The closed cavity pressure stabilizer according to claim 1, wherein: the cylinder body is fixed with the shell of the closed cavity in a threaded connection mode.

9. The closed cavity pressure stabilizer according to claim 8, wherein: and sealing adhesive is added at the screwed joint of the cylinder body and the shell.

10. A camera, its characterized in that: a pressure stabilizer provided with a closed chamber according to any one of claims 1 to 9, wherein the closed chamber is a chamber of a camera cylinder.

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