Window assembly for a camera and a camera

Abstract

Embodiments of the present application provide a window component for a camera and a camera. The window component includes: a window seat, with a mounting hole formed at the center of the window seat; a first lens, made of PC material, the first lens is disposed in the mounting hole, the first lens includes a first end and a second end which are oppositely arranged, a groove is provided at the first end, and the side wall of the first lens is bonded to the hole wall of the mounting hole through an adhesive to fix the first lens in the mounting hole; a second lens, made of glass, the second lens is disposed in the mounting hole and on the side of the first lens close to the second end, and the second lens is bonded to the hole wall of the mounting hole through an adhesive.

Description

Technical Field

[0001] The present application relates to the technical field of cameras, and in particular, to a window assembly for a camera and a camera. Background Art

[0002] With the popularization of monitoring technology, monitoring technology is applied in more and more fields. In the detection of some high-risk flammable and explosive environments, since high-voltage impacts may occur at any time in the environment, it is required that the camera has a certain explosion-proof performance. The explosion-proof performance of an explosion-proof camera can prevent the sparks generated by the electrical components inside the camera from spreading to the surrounding explosive environment and causing an explosion in the surrounding explosive environment.

[0003] In the related art, in order to improve the explosion-proof performance and anti-corrosion performance of the camera, tempered glass with a thickness of more than 15 mm is usually used for the lens window. However, this will result in a relatively large overall size of the camera and an increase in cost. At the same time, due to the certain probability of self-explosion of tempered glass, after the tempered glass self-explodes, the explosion-proof performance of the camera will fail. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a window assembly for a camera and a camera, so as to reduce the overall size of the camera while ensuring the explosion-proof performance and anti-corrosion performance of the camera. The specific technical solutions are as follows:

[0005] An embodiment of the first aspect of the present application provides a window assembly for a camera, including: a window seat, in which an installation hole is provided at the center; a first lens, the first lens is made of PC material, the first lens is arranged in the installation hole, the first lens includes a first end and a second end which are oppositely arranged, and a groove is provided at the first end. The side wall of the first lens is bonded to the hole wall of the installation hole through an adhesive glue to fix the first lens in the installation hole. A second lens, the material of the second lens is glass, the second lens is arranged in the installation hole and on the side of the first lens close to the second end, and the second lens is bonded to the hole wall of the installation hole through an adhesive glue.

[0006] The present application improves the specific structure of the window component. Specifically, in the first aspect, the first lens of the window component is made of PC material. The impact resistance of the PC material is stronger than that of tempered glass, and there are no defects such as self-explosion, which is beneficial to improving the explosion-proof performance of the camera. In the second aspect, since the impact resistance of the PC material is stronger than that of tempered glass, the thickness of the first lens can be reduced while the width of the bonding joint surface meets the national standard requirements. The first lens has a first end and a second end arranged oppositely, where the first end refers to the end close to the internal components of the camera, and the second end refers to the end close to the external environment. A groove is provided at the first end to cause local thinning of the first end relative to the second end. The thickness after thinning, that is, the thickness from the bottom wall of the groove to the second end, can also meet the requirements of the explosion-proof performance of the camera and does not affect the width of the bonding joint surface. At this time, due to the existence of the groove, a part of the internal components of the camera, such as a part of the lens, can penetrate into the groove, which is beneficial to reducing the overall size of the camera. In the third aspect, the window component further includes a second lens, the material of the second lens is glass, and the second lens is arranged at the second end of the first lens. Glass has good corrosion resistance. The second lens can form a shielding protection for the first lens, so that the camera also has a certain corrosion resistance. Therefore, the present application can reduce the overall size of the camera while ensuring the explosion-proof performance and corrosion resistance of the camera. It is easy to understand that there is a negative correlation between the depth of the groove and the degree of reduction in the overall size of the camera. That is to say, when a higher explosion-proof performance of the camera is required, the depth of the groove should not be too deep to make the first lens stronger. Thus, the degree of reduction in the overall size of the camera is smaller. When the explosion-proof performance of the camera is required to meet the minimum requirements, a deeper groove can be set. Thus, the degree of reduction in the overall size of the camera is larger. Those skilled in the art can flexibly select according to the actual situation.

[0007] The window component for a camera according to an embodiment of the present application may further have the following technical features:

[0008] In some embodiments of the present application, the bonding glue includes optical glue or AB glue.

[0009] In some embodiments of the present application, the window seat includes a first part and a second part. The mounting hole penetrates through the first part and the second part. The inner diameter of the mounting hole in the first part is larger than the inner diameter of the mounting hole in the second part, so that a part of the second part forms a limiting portion. The first lens is located in the mounting hole of the first part, the second end abuts against the limiting portion, and the second lens is located in the mounting hole of the second part and is in close contact with the second end.

[0010] In some embodiments of the present application, the distance from the bottom wall of the groove to the second end of the first lens is greater than or equal to 5 mm.

[0011] In some embodiments of the present application, the second lens is bonded to the second end through the adhesive glue.

[0012] In some embodiments of the present application, a guiding structure is provided on the inner wall of the mounting hole of the second part.

[0013] In some embodiments of the present application, the window assembly further includes an annular gasket and a pressing plate. The annular gasket is in close contact with the first end of the first lens. The center of the pressing plate has a first through hole. The pressing plate is in close contact with the annular gasket and is connected to the inner wall of the mounting hole.

[0014] An embodiment of the second aspect of the present application provides a camera, including at least one lens assembly and at least one window assembly for a camera in any embodiment of the first aspect. The central axis of the lens assembly coincides with the central axis of the mounting hole, and a part of the lens assembly is located in the groove.

[0015] The camera according to the embodiment of the present application can reduce its overall size while meeting the requirements of explosion-proof performance and anti-corrosion performance.

[0016] The camera according to the embodiment of the present application may further have the following technical features:

[0017] In some embodiments of the present application, the camera further includes a housing. A window assembly mounting hole is provided on the housing. An accommodation cavity is provided inside the housing for accommodating the lens assembly. The window assembly is connected to the housing through the window assembly mounting hole.

[0018] In some embodiments of the present application, threads are provided on the outer surface of the window seat. The threads are used to combine with the window assembly mounting hole to form an explosion-proof joint surface, so that the window assembly is connected to the housing.

[0019] In some embodiments of the present application, there are two window assemblies. Two window assembly mounting holes are provided on the housing, and there are two lens assemblies.

[0020] Of course, it is not necessary for any product or method implementing the present application to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a window component in the related art;

[0023] Figure 2 It is an assembly schematic diagram of a lens component and a window component in the related art;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the first lens in the window seat of the embodiment of the present application;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the window seat of the embodiment of the present application;

[0026] Figure 5 It is a schematic cross-sectional structure diagram of the window component of the embodiment of the present application;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of the window component in one of the embodiments of the present application;

[0028] Figure 7 It is a schematic cross-sectional structure diagram of the window component in another embodiment of the present application;

[0029] Figure 8 It is Figure 7 a disassembled schematic diagram of the window seat, the first lens, the annular gasket and the pressing plate of the window component in;

[0030] Figure 9 It is a schematic cross-sectional structure diagram of a camera in one of the embodiments of the present application;

[0031] Figure 10 It is a schematic cross-sectional structure diagram of a camera in another embodiment of the present application;

[0032] Figure 11 It is an assembly schematic diagram of the camera of the embodiment of the present application;

[0033] Figure 12 It is a schematic cross-sectional structure diagram of a camera in yet another embodiment of the present application.

[0034] The reference numerals are as follows:

[0035] 10' camera; 100' window assembly; 180 tempered glass; 200' lens assembly; 10 camera; 100 window assembly; 110 window seat; 111 mounting hole; 1111 first segment; 1112 second segment; 112 first part; 113 second part; 1131 inner wall; 1132 chamfer; 114 limiting part; 115 outer surface; 116 third part; 120 first lens; 121 first end; 122 second end; 123 groove; 124 side wall; 1231 bottom wall; 130 adhesive glue; 140 second lens; 200 lens assembly; L central axis; 150 annular gasket; 160 pressure plate; 161 first through hole; 170 thread; 300 housing; 310 window assembly mounting hole; 320 receiving cavity; 400 first process hole; 500 second process hole; 600 sealing ring. Detailed implementation manner

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art based on the present application belong to the protection scope of the present application.

[0037] As Figure 1 and Figure 2 shown, a window assembly 100' in the related art is provided. It uses tempered glass 180 with a thickness of a for explosion isolation. Usually, its thickness is as high as more than 15 mm. As Figure 2 shown, it is an assembly schematic diagram of the window assembly 100' and the lens assembly 200'. The length of the lens assembly 200' is c, and the distance between the lens assembly 200' and the tempered glass 180 is b. The dimensions of the tempered glass 180 and the lens assembly 200' in the horizontal direction are a + b + c, which will cause the overall size of the camera 10' to be relatively large. At the same time, due to the certain probability of self-explosion of the tempered glass, after the tempered glass self-explodes, the explosion isolation performance of the camera 10' will fail.

[0038] Based on the above situation, as Figures 3 to 6As shown in the figure, an embodiment of the first aspect of the present application provides a window component 100 for a camera 10, including a window seat 110, a first lens 120, an adhesive glue 130, and a second lens 140. An installation hole 111 is provided at the center of the window seat 110. The first lens 120 is made of PC material and is disposed in the installation hole 111. The first lens 120 includes a first end 121 and a second end 122 which are oppositely disposed, and a groove 123 is provided at the first end 121. The side wall 124 of the first lens 120 is bonded to the hole wall of the installation hole 111 through the adhesive glue 130, so that the first lens 120 is fixed in the installation hole 111. The material of the second lens 140 is glass. The second lens 140 is disposed in the installation hole 111 and on the side of the first lens 120 close to the second end 122. The side wall 124 of the second lens 140 is bonded to the hole wall of the installation hole 111 through the adhesive glue 130.

[0039] In the present application, the window component 100 includes a window seat 110, a first lens 120, an adhesive glue 130, and a second lens 140. The window seat 110 is the main component of the window component 100, and an installation hole 111 is provided thereon. The installation hole 111 is used for installing the first lens 120 and the second lens 140, so that the lens inside the camera 10 can observe the external scene through the installation hole 111, thereby realizing real-time monitoring of the external scene. In some embodiments, the material of the window seat 110 may be a metal material, which is beneficial to improving its strength and further improving the protection performance of the camera 10. In some embodiments, the material of the window seat 110 may also be an engineering plastic, which is beneficial to reducing the weight of the window seat 110 while ensuring the strength of the camera 10 and is beneficial to reducing the production cost.

[0040] The first lens 120 and the second lens 140 are installed in the installation hole 111 through the adhesive glue 130, and the lens in the camera 10 can observe the external environment through the first lens 120 and the second lens 140. The first lens 120 is made of PC material. The full name of the PC material is "polycarbonate", which is an amorphous thermoplastic plastic with low water absorption, good light transmittance, and the visible light transmittance can reach more than 90%, which is beneficial to improving the display effect of the monitoring screen. The most excellent feature of the PC material is its excellent impact resistance. Generally, the impact resistance of the PC material is stronger than that of tempered glass, and at the same time, it does not have the self-explosion characteristic similar to that of tempered glass. The PC material is also one of the important components of bulletproof glass. In addition, the PC plastic has excellent thermal properties and can be used for a long time at -60 to 120 °C, which is beneficial to ensuring the service life of the camera 10.

[0041] The material of the second lens 140 is glass, and the second lens 140 is disposed on one side of the first lens 120 close to the second end 122. Glass has good corrosion resistance. The second lens 140 can shield and protect the first lens 120 to prevent the first lens 120 from being corroded.

[0042] The adhesive glue 130 is used to fix the first lens 120 and the second lens 140 in the mounting hole 111 to prevent them from falling out of the mounting hole 111. Using the adhesive glue 130 to fix the first lens 120 and the second lens 140 is beneficial to simplify the process flow and reduce the production cost. At the same time, after the adhesive glue 130 bonds the first lens 120 and the mounting hole 111 and solidifies, an explosion-proof joint surface will be formed. The explosion-proof joint surface refers to the corresponding surfaces of different parts of the explosion-proof enclosure or the part where the enclosure joints are fitted together and can prevent the internal explosion from spreading to the explosive gas environment around the enclosure. In the embodiment of the present application, the explosion-proof joint surface refers to the part formed between the inner wall of the mounting hole 111 of the window seat 110 and the first lens 120.

[0043] In the national standard GB3836.2, there are certain requirements for the width of the adhesive joint surface formed after the adhesive glue 130 solidifies, so that the camera 10 meets the requirements of explosion-proof performance. As Figure 1 shown, the width of the adhesive joint surface refers to the length D of the adhesive joint surface between the first lens 120 and the mounting hole 111 in the extending direction of the central axis L of the mounting hole 111, that is, the length D of the mounting joint surface between the first lens 120 and the mounting hole 111. The specific requirements of the national standard GB3836.2 are as follows:

[0044] When V ≤ 10 cm 3 , D is not less than 3 mm;

[0045] When 10 cm 3 <V ≤ 100 cm 3 , D is not less than 6 mm;

[0046] When V > 100 cm 3 , D is not less than 10 mm.

[0047] Among them, V refers to the volume of the camera 10. As can be seen from the above, when D≥10mm, the requirement for the width of the bonding joint surface in the explosion-proof performance can be met. Therefore, the bonding glue 130 is filled between the side wall 124 of the first lens 120 and the hole wall of the mounting hole 111. The length D of the bonding joint surface between the first lens 120 and the mounting hole 111 in the extending direction of the central axis of the mounting hole 111 is D≥10mm, so that the length of the bonding glue 130 after solidification in the extending direction of the central axis L of the mounting hole 111 is also greater than or equal to 10mm, thus meeting the requirements in GB3836.2 of the national standard and effectively ensuring the explosion-proof performance of the window assembly 100. It is easy to understand that the length D of the bonding joint surface between the first lens 120 and the mounting hole 111 in the extending direction of the central axis L of the mounting hole 111 can be flexibly set according to the volume of the camera 10, as long as the requirements of GB3836.2 of the national standard are met.

[0048] In the field of explosion-proof cameras, according to the use scenarios of the cameras, they can be divided into Class I mine explosion-proof cameras and Class II explosion-proof cameras. Class I mine explosion-proof cameras are usually applied in harsh working conditions such as mines, for example, coal mines. There are not only coal slag impacts in the coal mine underground, but also conditions such as corrosion by mine hydraulic oil. Therefore, the window assembly of Class I mine explosion-proof cameras not only needs to meet a certain impact resistance, but also requires corresponding corrosion protection ability. Class II explosion-proof cameras are usually applied in environments where explosive gases (including vapors, mists) exist, such as chemical plants, etc., and they only need to meet the explosion-proof requirements.

[0049] This application has improved the specific structure of the window assembly 100. Specifically, in the first aspect, the first lens 120 of the window assembly 100 is made of PC material. The impact resistance of the PC material is stronger than that of tempered glass, and there are no defects such as self-explosion. Thus, it is beneficial to improve the explosion-proof performance. Further, if the second lens 140 still uses tempered glass, the second lens 140 also has a certain impact resistance, and the impact resistance of the combination of the second lens 140 and the first lens 120 is also stronger than that of the tempered glass in the related art. In addition, even if the second lens 140 explodes, the explosion-proof performance of the window assembly 100 will not fail due to the existence of the first lens 120. Therefore, it is beneficial to ensure the explosion-proof performance of the window assembly 100 and the camera 10.

[0050] In the second aspect, since the impact resistance of the PC material is stronger than that of tempered glass, the thickness of the first lens 120 can be reduced under the condition that the width of the bonding joint surface meets the requirements of GB3836.2 of the national standard. Specifically, as Figures 3 to 5As shown, the first lens 120 has a first end 121 and a second end 122 that are oppositely arranged. Among them, the first end 121 refers to the end close to the internal components of the camera 10, and the second end 122 refers to the end close to the external environment. That is, the first lens 120 has a base thickness from the first end 121 to the second end 122. Further, a groove 123 is provided at the first end 121 to cause local thinning of the first end 121 relative to the second end 122. The thickness after thinning, that is, the thickness from the bottom wall 1231 of the groove 123 to the second end 122, can meet the requirements of the explosion-proof performance of the camera 10. At the same time, the width of the bonding joint surface where the first lens 120 is installed with the mounting hole 111 remains unchanged, so that the requirements of the national standard bonding joint surface can also be met. At this time, due to the existence of the groove 123, a part of the internal components of the camera 10, such as a part of the lens, can penetrate into the groove 123, which is beneficial to reducing the overall size of the camera 10. Specifically, referring to Figure 2 , Figure 3 , Figure 6 and Figure 9 , Figure 9 is an assembly schematic diagram of the lens assembly 200 and the window assembly 100 in the camera 10 in this application. The thickness of the first lens 120 after thinning is D3, and the thickness of the second lens 140 is f. The sum of the thicknesses of the first lens 120 and the second lens 140 is D4 = D3 + f. Refer to Figure 2 , the tempered glass 180 does not have the groove 123. Therefore, its thickness a > D4. In this application, the size of the camera 10 in the horizontal direction is D4 + b + c. In the related art, it is a + b + c. Therefore, the size of the camera 10 in the horizontal direction is shortened, which is beneficial to reducing the overall size of the camera 10.

[0051] In the third aspect, the window assembly 100 further includes a second lens 140. The material of the second lens 140 is glass, and the second lens 140 is arranged at the second end 122 of the first lens 120. Glass has good corrosion resistance. The second lens 140 can form a shielding protection for the first lens 120 to prevent the first lens 120 from being corroded, so that the camera 10 also has a certain corrosion resistance.

[0052] Therefore, the embodiment of the present application is conducive to reducing the overall size of the camera 10 while ensuring the explosion-proof performance and anti-corrosion performance of the camera 10. It is easy to understand that there is a negative correlation between the explosion-proof performance of the camera 10 and the degree of reduction in the overall size of the camera 10. That is to say, when a higher explosion-proof performance of the camera 10 is required, the depth of the groove 123 should not be too deep. Thus, the degree of reduction in the overall size of the camera 10 is relatively small. When the explosion-proof performance of the camera 10 meets the minimum requirements, a deeper groove 123 can be set. Thus, the degree of reduction in the overall size of the camera 10 is relatively large. Those skilled in the art can make a flexible choice according to the actual situation.

[0053] Due to the excellent performance of the window assembly of the present application, the camera 10 applied with the window assembly of the present application can not only be used in an environment where explosive gases (including vapors and mists) exist, but also can be used under harsh mining working conditions, thereby facilitating the improvement of the usage scenarios of the camera 10.

[0054] In some other embodiments, the second lens 140 can also be made of ordinary glass, and only a certain anti-corrosion ability is required. In this way, it is beneficial to reduce the production cost of the camera 10, and it is more convenient to replace the second lens 140.

[0055] In some embodiments of the present application, the bonding glue 130 includes optical glue or AB glue. Optical glue has the characteristics of being colorless and transparent, having a light transmittance of more than 90%, and having good bonding strength. Optical glue can be cured at room temperature or medium temperature, and has a small curing shrinkage. Using optical glue to bond the side wall 124 of the first lens 120 and the hole wall of the mounting hole 111, as well as the second lens 140 and the hole wall of the mounting hole 111, is beneficial to improving the bonding strength while increasing the light transmittance of the mounting hole 111 and reducing the probability of the lens being blocked. AB glue refers to a two-component adhesive including two kinds of mixed and hardened transparent glues. The two-component adhesive is mixed in proportion and then used to bond the object to be bonded. AB glue can be cured at room temperature and has a high bonding strength. It can bond plastic to plastic, plastic to metal, metal to metal, etc., and has a wide range of applications. Using AB glue to bond the two is beneficial to reducing the production cost of the camera 10 while improving the bonding strength of the two. It is easy to understand that only two common and easily obtainable glues in industrial production are listed in this embodiment. Substantially, as long as the transparent glue can meet the bonding requirements of the first lens 120, the second lens 140 and the mounting hole 111, it can be applied in the embodiment of the present application.

[0056] Further, as Figure 5As shown, the window seat 110 includes a first part 112 and a second part 113, and the mounting hole 111 penetrates through the first part 112 and the second part 113. The inner diameter D1 of the mounting hole 111 in the first part 112 is larger than the inner diameter D2 of the mounting hole 111 in the second part 113, so that the second part 113 forms a limiting portion 114 for the first part 112. The first lens 120 is located in the mounting hole 111 of the first part 112, and the second end 122 abuts against the limiting portion 114. The second lens 140 is located in the mounting hole 111 of the second part 113 and is in close contact with the second end 122.

[0057] In this embodiment, the window seat 110 includes two parts, a first part 112 and a second part 113. Among them, the mounting hole 111 in the first part 112 is used to mount the first lens 120. The inner diameter D2 of the mounting hole 111 in the second part 113 is smaller than the inner diameter D1 of the mounting hole 111 in the first part 112. That is to say, the mounting hole 111 also correspondingly includes two sections with inner diameters D1 and D2. That is, as Figure 4 shown, the window seat 110 includes a first part 112 and a second part 113. The mounting hole 111 includes a first section 1111 with an inner diameter D1 corresponding to the first part 112 and a second section 1112 with an inner diameter D2 corresponding to the second part 113. The first section 1111 and the second section 1112 have a common central axis L. Since the inner diameters of the mounting hole 111 in the first part 112 and the second part 113 are different, the second part 113 of the window seat 110 will partially block the first part 112 in the direction of the extension of the central axis L, thereby forming a limiting portion 114. That is to say, the limiting portion 114 refers to the part on the second part 113 of the window seat 110 that is the excess obtained by subtracting the inner diameter D2 from the inner diameter D1. The limiting portion 114 has multiple functions. On the first hand, when installing the first lens 120, when the second end 122 of the first lens 120 abuts against the limiting portion 114, it indicates that the first lens 120 is installed in place, so that the limiting portion 114 plays a limiting role for the first lens 120. On the second hand, after the first lens 120 is installed, the first lens 120 and the external environment are separated by the limiting portion 114, so that a part of the protective effect can be achieved for the first lens 120.

[0058] The mounting hole 111 in the second part 113 is used to mount the second lens 140. The mounting hole 111 in the second part 113 refers to the second section 1112 of the mounting hole 111. In this embodiment, the second section 1112 of the mounting hole corresponding to the second part 113 is used to mount the second lens 140. In this way, it is beneficial to improve the installation firmness and convenience of the second lens 140.

[0059] As Figure 5As shown, the second lens 140 is adhered to the inner wall 1131 of the mounting hole 111 of the second part 113 through an adhesive glue 130. That is, the second lens 140 is connected to the second section 1112 of the mounting hole 111 through the adhesive glue 130. Fixing the second lens 140 to the inner wall 1131 of the mounting hole 111 of the second part 113 using the adhesive glue 130 is conducive to simplifying the process flow and reducing production costs. Further, the adhesive glue 130 may include an optical glue or an AB glue; or, it includes other glues that can meet the adhesion requirements between the second lens 140 and the inner wall of the mounting hole 111 of the second part 113, and this application does not make any restrictions.

[0060] As Figure 3 shown, in some embodiments of the present application, the distance from the bottom wall 1231 of the groove 123 to the second end 122 of the first lens 120 is greater than or equal to 5 mm. That is, after setting the groove 123, the thickness D3 of the first lens 120 after thinning is ≥ 5 mm. Such a setting is conducive to reducing the overall size of the camera 10 while ensuring that its explosion-proof performance meets the working requirements.

[0061] As Figure 5 shown, in some embodiments of the present application, the second lens 140 is adhered to the second end 122 through an adhesive glue 130. Fixing the second lens 140 to the second end 122 of the first lens 120 using the adhesive glue 130 is conducive to simplifying the process flow and reducing production costs. Further, the adhesive glue 130 may include an optical glue or an AB glue; or, it includes other glues that can meet the adhesion requirements between the second lens 140 and the second end 122 of the first lens 120, and this application does not make any restrictions.

[0062] Further, a guiding structure is provided on the inner wall 1131 of the mounting hole 111 of the second part 113. For example, as Figure 6 shown, the guiding structure may be a chamfer 1132; or, the guiding structure may be a rounded corner, etc. By providing the guiding structure, it is conducive to improving the installation convenience of the second lens 140 when it is placed into the second part 113.

[0063] As Figure 5 shown, in some embodiments of the present application, the outer surface 115 of the second part 113 facing away from the first lens 120 is flush with the outer surface of the second lens 140 facing away from the first lens 120. That is, after the second lens 140 is installed in the mounting hole 111 of the second part 113, it is flush with the outer surface 115 on the side of the window seat 110 close to the external environment. Such a setting is conducive to improving the aesthetics of the camera 10 and also conducive to reducing the probability of the second lens 140 being damaged by being knocked.

[0064] As Figure 5As shown, in some embodiments of the present application, the distance D4 between the second lens 140 and the bottom wall 1231 of the groove 123 is greater than or equal to 10 mm. The distance D4 between the second lens 140 and the bottom wall 1231 of the groove 123 is the sum of the thickness of the second lens 140 and the thickness D3 of the first lens 120 after thinning (ignoring the thickness of the adhesive glue). D4 ≥ 10 mm, that is, when ensuring that the thickness D3 of the first lens 120 meets the explosion-proof performance of the camera 10, the thickness of the second lens 140 can be flexibly set according to the actual situation.

[0065] For example, in a specific embodiment, the thickness D3 of the first lens 120 after thinning is set to 5 mm, and the thickness of the second lens 140 can also be set to 5 mm. In the related art, as Figure 1 and Figure 2 shown, the thickness a of the commonly used tempered glass 180 is 15 mm. In this embodiment, the first lens 120 has a groove 123 in the middle, and the installation joint surface of the first lens 120 and the installation hole 111 meets the national standard requirements, that is, as Figure 9 shown, D meets the national standard requirements. The sum of the thickness D3 of the first lens 120 after thinning, the thickness of the second lens 140 and D4 is 10 mm. Compared with the related art, the thickness is reduced by 1 / 3. Since the lens assembly can penetrate into the groove 123, the overall size required for the camera 10 can also be reduced. If the anti-corrosion performance is not considered and only the first lens 120 is set, as Figure 3 and Figure 10 shown, Figure 10 is a cross-sectional schematic diagram of the camera 10 with only the first lens 120 and without the second lens 140. Its thickness is only 5 mm, and the thickness is reduced by 2 / 3 compared with the related art.

[0066] As Figure 7 and Figure 8 shown, Figure 8 is an exploded schematic diagram of the window seat 110, the first lens 120, the annular gasket 150 and the pressing plate 160. In some embodiments of the present application, the window assembly 100 further includes an annular gasket 150 and a pressing plate 160. The annular gasket 150 is in close contact with the first end 121 of the first lens 120. The pressing plate 160 has a first through hole 161 at the center. The pressing plate 160 is in close contact with the annular gasket 150 and is connected to the inner wall of the installation hole 111. The present application also provides an annular gasket 150 and a pressing plate 160. The annular gasket 150 is installed at the first end 121 of the first lens 120 and exposes the groove 123. The pressing plate 160 is installed on the annular gasket 150 and is connected to the inner wall of the installation hole 111. Specifically, as Figure 7As shown, in addition to having a first part 112 and a second part 113, the window seat 110 also has a third part 116. After the annular gasket 150 presses the first lens 120, the pressing plate 160 presses the annular gasket 150 and is connected to the inner wall of the mounting hole of the third part 116, so as to realize the pressing and fixing of the first lens 120. By providing the annular gasket 150 and the pressing plate 160, it is beneficial to reduce the probability of the first lens 120 falling out of the window seat 110 due to the failure of the adhesive glue 130, and thus it is beneficial to improve the reliability of the window assembly 100. In some embodiments, the pressing plate 160 and the mounting hole 111 are fastened by means of internal and external thread connection. In some embodiments, a first process hole 400 is further provided on the pressing plate 160, so that a tool can be used to cooperate with the first process hole 400 to assemble the pressing plate 160 and the window seat 110.

[0067] As Figure 9 shown, an embodiment of the second aspect of the present application provides a camera 10, including at least one lens assembly 200 and at least one window assembly 100 for the camera 10 as described in the first aspect. The central axis of the lens assembly 200 coincides with the central axis of the mounting hole 111, and a part of the lens assembly 200 is located in the groove 123.

[0068] The camera 10 of the embodiment of the present application can reduce its overall size while meeting the requirements of explosion-proof performance and anti-corrosion performance. Specifically, on the one hand, the first lens 120 of the window assembly 100 is made of PC material. The impact resistance of the PC material is stronger than that of tempered glass, and there are no defects such as self-explosion. Thus, it is beneficial to improve the explosion-proof performance. Further, if the second lens 140 still uses tempered glass, the second lens 140 still has a certain impact resistance, and the impact resistance of the combination of the second lens 140 and the first lens 120 is also stronger than that of the tempered glass in the related art. In addition, even if the second lens 140 undergoes self-explosion, the explosion-proof performance of the window assembly 100 will not fail due to the presence of the first lens 120. Therefore, it is beneficial to ensure the explosion-proof performance of the window assembly 100 and the camera 10.

[0069] On the second hand, since the impact resistance of the PC material is stronger than that of tempered glass, the thickness of the first lens 120 can be reduced. As Figure 6As shown, a groove 123 is provided at the first end 121, so that the first end 121 is locally thinned relative to the second end 122. After thinning, the thickness of the first lens 120 can also meet the requirements of the explosion-proof performance of the camera 10. At this time, due to the existence of the groove 123, a part of the lens assembly 200 of the camera 10 can penetrate into the groove 123, which is beneficial to reducing the overall size of the camera 10. Thirdly, the second lens 140 can block the first lens 120, which is beneficial to preventing the first lens 120 from being corroded by the external environment. Therefore, the embodiment of the present application is beneficial to reducing the overall size of the camera 10 while ensuring the explosion-proof performance and anti-corrosion performance of the camera 10. It is easy to understand that there is a negative correlation between the explosion-proof performance of the camera 10 and the degree of reduction of the overall size of the camera 10. That is to say, when the explosion-proof performance of the camera 10 is required to be high, the depth of the groove 123 should not be too deep. Therefore, the degree of reduction of the overall size of the camera 10 is small. When the explosion-proof performance of the camera 10 is required to meet the minimum requirements, a deeper groove 123 can be set. Therefore, the degree of reduction of the overall size of the camera 10 is large. Those skilled in the art can make a flexible choice according to the actual situation.

[0070] In some embodiments of the present application, as Figure 11 shown, the camera 10 further includes a housing 300. A window assembly mounting hole 310 is provided on the housing 300. An accommodation cavity 320 is formed inside the housing 300. The accommodation cavity 320 is used to accommodate the lens assembly 200. The window assembly 100 is connected to the housing 300 through the window assembly mounting hole 310. In this embodiment, the camera 10 specifically includes a housing 300, a window assembly 100, and a lens assembly 200. The housing 300 can be made of a metal material, or can also be made of an engineering plastic material. The lens assembly 200 is located in the accommodation cavity 320, and one end penetrates into the groove 123 inside the window assembly 100. In this way, it is beneficial to shorten the overall size of the camera 10.

[0071] In some embodiments of the present application, as Figure 7 and Figure 11 shown, threads 170 are provided on the outer surface of the window seat 110. The threads 170 are used to combine with the window assembly mounting hole 310 to form an explosion-proof joint surface, so that the window assembly 100 is connected to the housing 300. In this embodiment, the explosion-proof joint surface refers to the part where the threads 170 on the outer surface of the window seat 110 are installed with the window assembly mounting hole 310. Through the threaded connection method, it can not only play the role of threaded connection, but also effectively form a release channel for the internal air pressure of the cavity, which is beneficial to reducing the internal stress of the accommodation cavity 320.

[0072] In some embodiments, as Figure 11 and Figure 12As shown in the figure, a second process hole 500 is provided on the surface of the window seat 110 facing away from the housing 300. When the window assembly 100 is assembled with the housing 300 of the whole machine, the window assembly 100 and the housing 300 can be tightened through the cooperation of the tooling and the second process hole 500. In some other embodiments, a sealing ring 600 is further provided between the window assembly 100 and the housing 300. When the window assembly 100 and the housing 300 are tightened, the sealing ring can be compressed, thereby ensuring the sealing reliability during the assembly of the camera 10.

[0073] In some embodiments of the present application, as Figure 12 shown, there are two window assemblies 100, two window assembly mounting holes 310 are provided on the housing 300, and there are two lens assemblies 200. In the present application, a camera 10 has two window assemblies 100 and two lens assemblies 200, which is beneficial to improving the usage scenarios of the camera 10. For example, the two lens assemblies 200 respectively implement different picture functions, and then through picture fusion, the required picture quality can be achieved. Or, the two lens assemblies 200 respectively have different shooting perspectives, which is beneficial to improving the perspective of the camera 10.

[0074] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0075] The above are only the preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application are all included in the protection scope of the present application.

Claims

1. A window component for a camera, characterized in that Comprising: A window seat, in which a mounting hole is provided at the center of the window seat; A first lens, the first lens is made of PC material, the first lens is disposed in the mounting hole, the first lens includes a first end and a second end which are oppositely disposed, a groove is provided at the first end for accommodating part of the lens assembly; the side wall of the first lens is bonded to the hole wall of the mounting hole by an adhesive glue so that the first lens is fixed in the mounting hole; A second lens, the material of the second lens is glass, the second lens is disposed in the mounting hole and on the side of the first lens close to the second end, and the second lens is bonded to the hole wall of the mounting hole by an adhesive glue; The window seat includes a first part and a second part, the mounting hole penetrates through the first part and the second part, the inner diameter of the mounting hole of the first part is larger than the inner diameter of the mounting hole of the second part, so that a part of the second part forms a limiting part; the limiting part is the part on the second part of the window seat, which is the part obtained by subtracting the inner diameter of the mounting hole of the second part from the inner diameter of the mounting hole of the first part; the first lens is located in the mounting hole of the first part, the second end abuts against the limiting part, and the second lens is located in the mounting hole of the second part and is in close contact with the second end; The second lens is bonded to the second end of the first lens by an adhesive glue; after the adhesive glue bonds the first lens and the mounting hole and solidifies, an explosion-proof joint surface is formed.

2. The window assembly for a camera according to claim 1, wherein, The distance from the bottom wall of the groove to the second end of the first lens is greater than or equal to 5 mm.

3. The window assembly for a camera according to claim 1, wherein, A guiding structure is provided on the inner wall of the mounting hole of the second part.

4. The window assembly for a camera according to claim 1, characterized in that, The window assembly further includes an annular gasket and a pressing plate, the annular gasket is in close contact with the first end of the first lens, the center of the pressing plate has a first through hole, and the pressing plate is in close contact with the annular gasket and is connected to the inner wall of the mounting hole.

5. A camera, characterized in that, Comprising at least one lens assembly and at least one window assembly for a camera according to any one of claims 1 to 4, the central axis of the lens assembly coincides with the central axis of the mounting hole, and a part of the lens assembly is located in the groove.

6. The camera according to claim 5, characterized in that, The camera further includes a housing, a window assembly mounting hole is provided on the housing, an accommodation cavity is provided inside the housing for accommodating the lens assembly, and the window assembly is connected to the housing through the window assembly mounting hole.

7. The camera according to claim 6, characterized in that, Threads are provided on the outer surface of the window seat, and the threads are used to combine with the window assembly mounting hole to form an explosion-proof joint surface, so that the window assembly is connected to the housing.

8. The camera according to claim 6, characterized in that, There are two window assemblies, two window assembly mounting holes are provided on the housing, and there are two lens assemblies.

Images