CN115013532A

CN115013532A - Sealing structure and camera

Info

Publication number: CN115013532A
Application number: CN202210949299.XA
Authority: CN
Inventors: 田伟; 朱帅帅
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-09-06

Abstract

The application discloses seal structure and camera belongs to sealed technical field. This seal structure includes: the annular main body part is provided with an inner peripheral surface and an outer peripheral surface which are opposite to each other, and the annular main body part is used for being sleeved on the first matching structure; the first annular flange and the second annular flange are arranged on the inner circumferential surface, the first annular flange and the second annular flange are arranged at intervals in the axial direction of the annular main body part, and at least one of the first annular flange and the second annular flange is used for being in rotating sealing fit with the first matching structure; and the third annular flange is arranged on the outer peripheral surface and is used for being in sealing fit with the second matching structure, and the third annular flange covers at least part of the second matching structure in the axial direction of the annular main body part. Above-mentioned scheme can be solved with the great relatively poor problem of sealed effect that leads to of the dimensional error of other parts of sealing washer complex.

Description

Sealing structure and camera

Technical Field

The application belongs to the technical field of sealing, concretely relates to seal structure and camera.

Background

The camera is a representative of modern television monitoring development, integrates multiple devices such as a color integrated camera, a holder, a decoder, a protective cover and the like, is convenient to install, simple to use and powerful in function, and is widely applied to monitoring of various occasions.

For a camera with a higher protection level, a sealing process needs to be performed through a sealing ring at a position where the camera has relative motion and is simultaneously communicated with the external environment. The inner peripheral surface of the sealing ring is provided with an annular flange, and the annular flange and the outer peripheral surface of the sealing ring are in sealing fit with other parts of the camera.

The outer peripheral face of sealing washer is the smooth surface, in order to reach good sealed cooperation effect, need have comparatively accurate size with other parts of sealing washer complex. However, if the dimensional error of the other component is large, the sealing effect of the seal ring is poor.

Disclosure of Invention

The purpose of the embodiment of the application is to provide a seal structure and a camera, which can solve the problem that the size error of other parts matched with a seal ring is large, so that the seal effect is poor.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a sealing structure, where the sealing structure includes:

the annular main body part is provided with an inner peripheral surface and an outer peripheral surface which are opposite, and the annular main body part is used for being sleeved on the first matching structure;

a first annular flange and a second annular flange, both disposed on the inner peripheral surface, the first annular flange and the second annular flange being spaced apart in an axial direction of the annular body portion, and at least one of the first annular flange and the second annular flange being for rotary sealing engagement with the first engagement structure;

a third annular flange disposed on the outer peripheral surface, the third annular flange configured to sealingly engage with a second engagement structure, the third annular flange covering at least a portion of the second engagement structure in an axial direction of the annular body portion.

In a second aspect, an embodiment of the present application further provides a camera, where the camera includes a first body, a second body, a first matching structure, a second matching structure, and the above-mentioned sealing structure, the first body is connected to the second body, one of the first body and the second body is provided with the first matching structure, the other is provided with the second matching structure, and the first matching structure passes through the sealing structure and the second matching structure are in sealing fit.

In an embodiment of the present application, when the first mating structure and the second mating structure need to be in sealing engagement with each other through the sealing structure, at least one of the first annular flange and the second annular flange is in rotating sealing engagement with the first mating structure, the third annular flange is in sealing engagement with the second mating structure, and the third annular flange covers at least part of the second mating structure in the axial direction of the annular main body portion. That is, in the axial direction of the annular main body portion, a projection of the third annular flange coincides with a projection of a partial structure of the second fitting structure. Therefore, in this embodiment, even if the dimensional error of the second fitting structure is large, resulting in a gap between the second fitting structure and the annular main body portion in the radial direction of the annular main body portion, the sealing effect of the sealing structure can be ensured by causing the third annular flange to cover at least part of the second fitting structure.

Drawings

FIG. 1 is a cross-sectional view of a camera disclosed in an embodiment of the present application;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a partial structural schematic view of a second body disclosed in an embodiment of the present application;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a sectional view of a portion of a second body according to an embodiment of the present disclosure;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

FIG. 7 is a cross-sectional view of a portion of a camera disclosed in an embodiment of the present application;

FIG. 8 is an enlarged view of the structure of FIG. 7 at D;

FIG. 9 is a cross-sectional view of a seal structure disclosed in an embodiment of the present application;

fig. 10 is an enlarged view of the structure at E in fig. 9.

Description of reference numerals:

100-sealing structure, 110-annular body part, 111-inner circumferential surface, 112-outer circumferential surface, 113-first outer circumferential surface, 114-second outer circumferential surface, 120-first annular flange, 130-second annular flange, 140-third annular flange, 141-bulge;

200-a first mating structure;

300-a second mating structure;

400-a first body;

500-a second body;

600-a seal body;

700-cover plate, 701-first through hole;

800-a fastener;

900-drive mechanism.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The sealing structure provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof.

As shown in fig. 1-10, embodiments of the present application provide a seal structure 100, the seal structure 100 including an annular body portion 110, a first annular flange 120, a second annular flange 130, and a third annular flange 140.

The annular main body 110 has an inner circumferential surface 111 and an outer circumferential surface 112 opposite to each other, and the annular main body 110 can be disposed on the first mating structure 200. The inner peripheral surface 111 refers to a surface facing the first fitting structure 200, and the outer peripheral surface 112 refers to a surface facing away from the first fitting structure 200.

The first annular flange 120 and the second annular flange 130 are disposed on the inner circumferential surface 111, the first annular flange 120 and the second annular flange 130 are spaced apart in an axial direction of the annular main body portion 110, and at least one of the first annular flange 120 and the second annular flange 130 is configured to be in rotary sealing engagement with the first engagement structure 200.

A third annular flange 140 is disposed on the outer peripheral surface 112, the third annular flange 140 being adapted for sealing engagement with the second mating structure 300, the third annular flange 140 covering at least a portion of the second mating structure 300 in an axial direction of the annular body portion 110. The first, second and third

annular flanges

120, 130, 140 may be any type of flange, and embodiments of the present application are not limited thereto. For example, the cross-section of the first, second and third

annular flanges

120, 130, 140 may be triangular, rectangular, circular, etc.

In this embodiment, the sealing structure 100 and the second mating structure 300 may be in sealing engagement first, and then the whole formed by the sealing engagement of the sealing structure 100 and the second mating structure 300 is in sealing engagement with the first mating structure 200, so as to achieve the purpose that the sealing structure 100 seals the first mating structure 200 and the second mating structure 300, because the first annular flange 120 and the second annular flange 130 of the sealing structure 100 are in rotating sealing engagement with the first mating structure 200, the sealing structure 100 can achieve a sealing effect when the first mating structure 200 and the second mating structure 300 rotate relatively, that is, the sealing structure 100 can prevent water and moisture from entering between the first mating structure 200 and the second mating structure 300.

In the embodiment of the present application, when the sealing engagement between the first mating structure 200 and the second mating structure 300 is required by the sealing structure 100, at least one of the first annular flange 120 and the second annular flange 130 is in rotational sealing engagement with the first mating structure 200, the third annular flange 140 is in sealing engagement with the second mating structure 300, and the third annular flange 140 covers at least a portion of the second mating structure 300 in the axial direction of the annular main body portion 110. That is, in the axial direction of the annular main body portion 110, the projection of the third annular flange 140 coincides with the projection of the partial structure of the second fitting structure 300. Therefore, in this embodiment, even if the dimensional error of the second fitting structure 300 is large, resulting in a gap occurring between the second fitting structure 300 and the annular main body portion 110 in the radial direction of the annular main body portion 110, the sealing effect of the sealing structure 100 can be ensured by having the third annular flange 140 cover at least part of the second fitting structure 300.

In one embodiment, the third annular flange 140 extends obliquely in a direction away from the annular main body portion 110. In this embodiment, in order to secure the sealing effect of the third annular flange 140, it is necessary to apply a force to the third annular flange 140, and in the case where the third annular flange 140 extends obliquely, the applied force cannot be entirely applied to the third annular flange 140. Therefore, in another embodiment, the third annular flange 140 extends perpendicular to the axis of the annular main body 110, i.e. the third annular flange 140 is a planar structure, and the plane is perpendicular to the axis of the annular main body 110. In the case where the third annular flange 140 extends vertically, the applied force may act entirely on the third annular flange 140.

In an alternative embodiment, one of the first and second

annular flanges

120, 130 is a clearance fit with the first mating structure 200. During use of the sealing structure 100, impurities may enter the receiving space formed by the first annular flange 120 and the second annular flange 130 from the gap, thereby easily resulting in poor sealing performance of the sealing structure 100. Therefore, in another alternative embodiment, the first annular flange 120 and the second annular flange 130 are both in sealing engagement, i.e., interference engagement, with the first engagement structure 200. Since there is no gap between the first and second

annular flanges

120 and 130 and the first mating structure 200, impurities cannot enter the accommodating space formed by the first and second

annular flanges

120 and 130, thereby facilitating the sealing effect of the sealing structure 100.

Optionally, in the axial direction of the annular main body portion 110, the first inner edge of the first annular flange 120 is not flush with the second inner edge of the second annular flange 130, so that one of the first annular flange 120 and the second annular flange 130 is tightly fitted with the first fitting structure 200, and the other one is loosely fitted with the first fitting structure 200, which is not favorable for ensuring the sealing effect of the sealing structure 100. Thus, in another embodiment, the first inner edge of the first annular flange 120 is flush with the second inner edge of the second annular flange 130. When the sealing structure 100 is in sealing engagement with the first engagement structure 200, the first and second

annular flanges

120 and 130 are engaged with the first engagement structure 200 to a consistent degree, thereby ensuring that the sealing structure 100 has a good sealing effect.

In one embodiment, the annular body 110 further has a first outer annular surface 113 and a second outer annular surface 114, the first outer annular surface 113 and the second outer annular surface 114 are opposite, a first inner edge of the first annular flange 120 is recessed relative to the first outer annular surface 113, and a second inner edge of the second annular flange 130 is recessed relative to the second outer annular surface 114. In the above embodiment, since the distance between the first inner edge and the second inner edge is short, the area of the sealing structure 100 covering the first fitting structure 200 is small, and therefore, sliding or shaking is likely to occur, resulting in poor reliability of connection between the sealing structure 100 and the first fitting structure 200. Therefore, in another embodiment, the first inner edge of the first annular flange 120 protrudes from the first outer annular surface 113. Because the distance between the first annular flange 120 and the second annular flange 130 is longer, the area of the sealing structure 100 covering the first matching structure 200 is larger, so that the connection reliability between the sealing structure 100 and the first matching structure 200 is better, and the situation that the sealing structure 100 slides or shakes can be avoided.

In an alternative embodiment, the first and second

annular flanges

120, 130 extend obliquely in a radial direction of the annular main body portion 110, and the first and second

annular flanges

120, 130 gradually approach each other. In this embodiment, since the distance between the first annular flange 120 and the second annular flange 130 is short, the area of the sealing structure 100 covering the first mating structure 200 is small, and thus slipping or shaking is easily occurred, resulting in poor reliability of connection between the sealing structure 100 and the first mating structure 200. Thus, in an alternative embodiment, the first and second

annular flanges

120, 130 are progressively further apart. In this embodiment, since the distance between the first annular flange 120 and the second annular flange 130 is relatively large, the area of the sealing structure 100 covering the first mating structure 200 is relatively large, so that the connection reliability between the sealing structure 100 and the first mating structure 200 is relatively good, and the sliding or shaking of the sealing structure 100 can be avoided.

The third annular flange 140 may be adapted to mate with a cover plate 700 of the camera, the cover plate 700 being axially juxtaposed to the third annular flange 140 in the annular body portion 110, the cover plate 700 may compress the third annular flange 140 to more tightly seal the third annular flange 140 to the second mating structure 300. Specifically, in order to enable the cover plate 700 to generate a larger pressure on the third annular flange 140 to improve the sealing effect, a protrusion 141 is provided on a surface of the third annular flange 140 facing the cover plate 700, and the cover plate 700 presses the protrusion 141. Pressing the protrusion 141 by the cap plate 700 may increase the acting force between the third annular flange 140 and the second fitting structure 300, so that the sealing effect of the sealing structure 100 may be improved.

The embodiment of the present application further discloses a camera, which may include a first body 400, a second body 500, a first matching structure 200, a second matching structure 300 and the sealing structure 100 in any of the above embodiments, wherein the first body 400 is connected to the second body 500, one of the first body 400 and the second body 500 is provided with the first matching structure 200, the other is provided with the second matching structure 300, and the first matching structure 200 is in sealing fit with the second matching structure 300 through the sealing structure 100.

In an alternative embodiment, when the sealing structure 100 is in sealing engagement with the first engaging structure 200, the first annular flange 120 and the second annular flange 130 can be respectively in sealing engagement, and air exists in the accommodating space formed by the first annular flange 120, the second annular flange 130 and the first engaging structure 200, and moisture exists in the air, which is not favorable for ensuring the sealing effect. Therefore, in order to further enhance the sealing effect, the camera may further include a sealing body 600, the sealing body 600 is disposed in the accommodating space formed by the first annular flange 120, the second annular flange 130 and the first mating structure 200, and the sealing body 600 surrounds the first mating structure 200. In this embodiment, by disposing the sealing body 600 in the accommodating space, not only a layer of sealing can be formed, but also moisture in the accommodating space formed by the first annular flange 120, the second annular flange 130 and the first fitting structure 200 can be reduced, and the sealing effect of the sealing structure 100 can be further improved.

In the case that the first body 400 and the second body 500 are statically fitted, that is, after the first body 400 and the second body 500 are assembled, relative movement between the two bodies does not occur, and at this time, the sealing body 600 may be a static sealing body, and thus, any type of sealing body may be used. In the case that the first body 400 and the second body 500 are dynamically engaged, that is, after the first body 400 and the second body 500 are assembled, relative movement occurs between the two bodies, and at this time, the sealing type is dynamic sealing, and the requirement of the dynamic sealing on the sealing body 600 is high. Therefore, the sealing body 600 may be a sealing ring, and the sealing ring and the sealing structure have a larger friction, which is not beneficial to the rotation between the first body 400 and the second body 500, so, in another embodiment, the sealing body 600 may be a lubricating oil, the first matching structure 200 includes a rotating shaft, the first body 400 is rotatably connected with the second body 500 through the rotating shaft, and the annular main body 110 is sleeved on the rotating shaft. Since relative movement between the first body 400 and the second body 500 may occur, the sealing body 600 may be formed by lubricating oil, thereby facilitating rotation between the first body 400 and the second body 500. In this embodiment, the first annular flange 120 and the second annular flange 130 are simultaneously in rotating sealing engagement with the first engagement structure 200 to form a closed receiving space for receiving lubricating oil. In addition, lubricating oil can be full of this accommodation space to make lubricating oil when playing sealed, reduce the friction effect, can also play the effect of effective isolated water and steam, thereby avoid water and steam to get into the camera, cause harmful effects to the camera, even the camera has waterproof function. Optionally, the camera may further include a driving mechanism 900, the driving mechanism 900 is disposed in the first body 400, and the driving mechanism 900 may be used to drive the second body 500 to rotate. The drive mechanism 900 may be a motor.

In the case where the first inner edge protrudes from the first outer annular surface 113, the volume of the receiving space formed by the first annular flange 120 and the second annular flange 130 is larger, so that more lubricant can be received.

In one embodiment, the sealing structure 100 may be an elastic member, and the camera may further include a cover plate 700, the cover plate 700 is connected to the second mating structure 300, the cover plate 700 covers the annular main body 110, the third annular flange 140 and the second mating structure 300, and the cover plate 700 contacts the third annular flange 140. The cover plate 700 is provided with a first through hole 701, the first fitting structure 200 is disposed through the first through hole 701, and at least a portion of the first annular flange 120 is located in the first through hole 701. The cover plate 700 may protect the seal structure 100, thereby extending the service life of the seal structure 100. The first through hole 701 can avoid the first annular flange 120, and facilitates formation of a larger accommodating space by the first annular flange 120, the second annular flange 130 and the first mating structure 200. In order to further enhance the sealing effect, the cover plate 700 presses the third annular flange 140, so that the third annular flange 140 can be in closer contact with the second mating structure 300, which is beneficial to further enhance the sealing effect of the sealing structure 100.

In an alternative embodiment, the cover plate 700 is adhered to the second mating structure 300 by an adhesive. After a period of use, the adhesive member is prone to aging, which is not favorable for ensuring the sealing effect of the sealing structure 100. Therefore, in another alternative embodiment, the camera may further include a fastener 800, and the cover plate 700 is provided with a second through hole, and one end of the fastener 800 passes through the second through hole and is connected to the second mating structure 300. In this embodiment, since the connection reliability of the fastener 800 is stronger, the sealing effect of the sealing structure 100 can be ensured.

Before the sealing structure is sleeved on the first mating structure 200, the space between the first annular flange 120 and the second annular flange 130 may be filled with lubricating oil, and then the third annular flange 140 is mated with the second mating structure 300. After the sealing structure is mounted, the cap plate 700 is pressed against the protrusions 141 of the third annular flange 140, and then the cap plate 700 is fixed to the second body 500 by screws. Next, the first fitting structure 200 on the first body 400 is inserted into the annular main body portion 110, then the bearing is installed, and the bearing cap is fixed to the first body 400 by screws, thereby completing the assembly of the sealing structure with the first body 400. Finally, other components such as the motor are mounted on the first body 400 or the second body 500, and the assembly of the whole machine can be completed.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sealing structure, comprising:

the annular body part (110), the annular body part (110) has the inner peripheral surface (111) and the outer peripheral surface (112) which are opposite, and the annular body part (110) is used for being sleeved on the first matching structure (200);

a first annular flange (120) and a second annular flange (130), wherein the first annular flange (120) and the second annular flange (130) are both arranged on the inner circumferential surface (111), the first annular flange (120) and the second annular flange (130) are arranged at intervals in the axial direction of the annular main body part (110), and at least one of the first annular flange (120) and the second annular flange (130) is used for being in rotating sealing fit with the first matching structure (200);

a third annular flange (140), said third annular flange (140) being disposed on said outer peripheral surface (112), said third annular flange (140) being adapted to sealingly engage a second engagement structure (300), said third annular flange (140) covering at least part of said second engagement structure (300) in the axial direction of said annular body portion (110).

2. The sealing structure of claim 1, wherein the first annular flange (120) and the second annular flange (130) are each in sealing engagement with the first engagement structure (200).

3. The seal structure of claim 2, characterized in that a first inner edge of the first annular flange (120) is flush with a second inner edge of the second annular flange (130) in an axial direction of the annular main body portion (110).

4. The seal structure of claim 1, wherein the annular body portion (110) further has a first outer annular surface (113), the first inner edge of the first annular flange (120) projecting beyond the first outer annular surface (113).

5. The seal structure according to claim 1, characterized in that the first annular flange (120) and the second annular flange (130) extend obliquely in a radial direction of the annular main body portion (110), and the first annular flange (120) and the second annular flange (130) are gradually distanced apart.

6. The sealing structure according to claim 1, characterized in that said third annular flange (140) is adapted to cooperate with a cover plate (700) of a camera, said third annular flange (140) being provided with a projection (141) on the side facing the cover plate (700), said cover plate (700) pressing said projection (141).

7. A camera, characterized in that the camera comprises a first body (400), a second body (500), a first mating structure (200), a second mating structure (300) and the sealing structure (100) of any one of the preceding claims 1-6, the first body (400) being connected to the second body 500, one of the first body (400) and the second body (500) being provided with the first mating structure (200) and the other with the second mating structure (300), the first mating structure (200) being in sealing engagement with the second mating structure (300) through the sealing structure (100).

8. The camera of claim 7, further comprising a sealing body (600), wherein the sealing body (600) is disposed in a receiving space formed by the first annular flange (120), the second annular flange (130), and the first mating structure (200), and wherein the sealing body (600) surrounds the first mating structure (200).

9. The camera of claim 8, wherein the sealing body (600) is made of a lubricating oil, the first fitting structure (200) comprises a rotating shaft, the first body (400) is rotatably connected to the second body (500) via the rotating shaft, and the annular main body (110) is sleeved on the rotating shaft.

10. The camera of claim 7, wherein the sealing structure (100) is a resilient member, the camera further comprising a cover plate (700), the cover plate (700) being connected to the second mating structure (300), the cover plate (700) simultaneously covering the annular body portion (110), the third annular flange (140) and the second mating structure (300), the cover plate (700) pressing against the third annular flange (140);

the cover plate (700) is provided with a first through hole (701), the first matching structure (200) penetrates through the first through hole (701), and at least one part of the first annular flange (120) is located in the first through hole (701).