CN113478073B

CN113478073B - Cable sealing processing method and camera

Info

Publication number: CN113478073B
Application number: CN202110742459.9A
Authority: CN
Inventors: 王甫超; 曹嘉俊; 帅树新
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-07-14
Anticipated expiration: 2041-06-30
Also published as: CN113478073A

Abstract

The invention provides a cable sealing processing method and a camera, wherein the cable sealing processing method is used for sealing and fixing a shell of the camera and the cable and comprises the steps of placing the end part of the cable at the preassembled position of the shell of the camera; respectively pre-fixing the shell and the cable; and (3) performing laser welding on the joint of the shell and the cable so as to enable a part of the cable and a part of the shell to be connected after being melted to form a welding bead structure. The invention solves the problems that the shell of the camera in the prior art needs to be reserved with the glue dispensing groove, the processing and manufacturing difficulty of the shell is increased, and the economy of the camera is not facilitated.

Description

Cable sealing processing method and camera

Technical Field

The invention relates to the technical field of monitoring equipment, in particular to a cable sealing processing method and a camera.

Background

In the prior art, the fixing and sealing between the camera shell and the cable are realized through glue filling and sealing, but the sealing mode needs the shell to reserve a glue dispensing groove, so that the processing and manufacturing difficulty of the shell is increased, and the economy of the camera is not facilitated.

Disclosure of Invention

The invention mainly aims to provide a cable sealing processing method and a camera, which are used for solving the problems that in the prior art, a glue dispensing groove is needed to be reserved in a camera shell, the processing and manufacturing difficulty of the shell is increased, and the economy of the camera is not facilitated.

In order to achieve the above object, according to one aspect of the present invention, there is provided a sealing processing method of a cable for sealing and fixing a housing of a camera and the cable, including placing an end portion of the cable at a pre-installed position of the housing of the camera; respectively pre-fixing the shell and the cable; and (3) performing laser welding on the joint of the shell and the cable so as to enable a part of the cable and a part of the shell to be connected after being melted to form a welding bead structure.

Further, when the end of the cable is placed at the preassembled position of the housing, the sealing processing method of the cable includes: extending the end of the cable into the assembly hole of the shell; when the end of the cable is flush with one end of the housing, the action of the cable is stopped, so that the cable is at the preassembly position.

Further, the sealing processing method of the cable further comprises the step of respectively pre-processing the surfaces of the shell, which are in contact with the cable, before respectively pre-fixing the shell and the cable so as to remove foreign matters on the surfaces of the shell, which are in contact with the cable.

Further, the sealing processing method of the cable further comprises a wire arranging step after the pre-fixing treatment and before the laser welding, wherein the wire arranging step comprises the step of arranging the multi-strand wires of the cable extending into the shell so as to keep a preset interval distance between conductors of the strands of wires.

Further, in the process of respectively pre-fixing the shell and the cable, the clamp is used for fixing the cable and the shell together.

Further, the cable sealing processing method further comprises a cooling step after the laser welding is finished, wherein the cooling step comprises the step of cooling the cable and the shell after the laser welding operation is finished for a preset period of time at room temperature so as to enable the weld bead structures formed by the insulating layer of each strand of core wire, the protective layer of the cable and the shell to be solidified into a whole; the clamp holding the housing and cable is removed.

According to another aspect of the present invention, there is provided a camera including a housing having a receiving cavity and an assembly hole communicating with the receiving cavity; one end of the cable passes through the assembly hole and extends into the accommodating cavity so as to be electrically connected with the element in the accommodating cavity; wherein, a welding bead structure of laser welding fusion connection is formed in the assembly hole between the cable and the shell.

Further, the cable comprises a plurality of strands of core wires and a protective layer, wherein each strand of core wires comprises a conductor and an insulating layer, and the insulating layer is wrapped on the circumferential outer surface of the conductor; the protective layer is wrapped on the circumferential outer surface of the multi-strand core wire positioned at the assembly hole and outside the accommodating cavity; when the shell and the cable are subjected to laser welding, the insulating layers of the core wires of the cable are melted, the protective layers of the cable are melted, and the parts of the shell are melted, so that the insulating layers of the core wires, the protective layers of the cable and the parts of the shell are connected after being melted to form a welding bead structure, and the conductors are wrapped.

Further, the shell is a plastic shell.

Further, the camera further comprises a plurality of separating devices, the plurality of separating devices are in one-to-one correspondence with the plurality of core wires, and when the plurality of core wires of the cable stretching into the accommodating cavity of the shell are arranged, the separating devices are sleeved on the outer periphery sides of the corresponding core wires.

By applying the technical scheme of the invention, the cable sealing processing method is provided, and the shell of the camera and the cable are fixed and sealed in a laser welding mode, so that on one hand, the sealing reliability between the shell of the camera and the cable is ensured, and meanwhile, the connection reliability between the shell of the camera and the cable is ensured; on the other hand, the shell does not need to be reserved with a glue dispensing groove, so that the processing and manufacturing difficulty of the shell is reduced, and the economy of the camera is further facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 shows a flow diagram of a method of sealing a cable according to an alternative embodiment of the invention;

fig. 2 shows a schematic structural view of a housing and a cable of a camera according to an alternative embodiment of the present invention;

FIG. 3 shows a schematic view of the housing and cable of FIG. 2 after laser welding;

FIG. 4 shows a schematic cross-sectional structural view of the housing and cable of FIG. 2 prior to laser welding;

fig. 5 shows a schematic cross-sectional structural view of the housing and cable of fig. 3 at a welding position of the housing and cable after laser welding.

Wherein the above figures include the following reference numerals:

10. a housing; 11. a receiving chamber; 12. a fitting hole; 20. a cable; 21. a core wire; 211. an insulating layer; 212. a conductor; 22. a protective layer; 30. and (3) a welding bead structure.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to solve the problems that in the prior art, a glue dispensing groove is required to be reserved for a camera shell, the processing and manufacturing difficulty of the shell is increased, and the economy of the camera is not facilitated, the invention provides a cable sealing and processing method and a camera.

As shown in fig. 2 and 3, the video camera includes a housing 10 and a cable 20, the housing 10 having a receiving chamber 11 and a fitting hole 12 communicating with the receiving chamber 11; one end of the cable 20 passes through the assembly hole 12 and extends into the accommodating cavity 11 to be electrically connected with elements in the accommodating cavity 11, and the other end of the cable 20 is connected with the power input end; wherein, a welding bead structure 30 for laser welding and fusion connection is formed between the cable 20 and the shell 10 in the assembly hole 12, that is, a first connection surface is formed on the hole wall surface of the assembly hole 12, a second connection surface is formed on the outer surface of the cable 20 located at the assembly hole 12, the cable 20 is welded with the first connection surface through the second connection surface by laser, and a welding bead structure 30 for fixing the cable 20 and the shell 10 is formed, and the welding bead structure 30 is formed by connecting part of the shell 10 and part of the cable 20 after fusion. In this way, the reliability of the connection between the housing 10 and the cable 20 is ensured, while the reliability of the seal between the housing 10 and the cable 20 is also ensured.

As shown in fig. 4 and 5, the cable 20 includes a plurality of core wires 21 and a protective layer 22, each of the core wires 21 including a conductor 212 and an insulating layer 211, the insulating layer 211 being wrapped around the circumferential outer surface of the conductor 212; the protective layer 22 is wrapped around the circumferential outer surface of the multi-strand core wire 21 located at the fitting hole 12 and outside the accommodating chamber 11; in the laser welding of the first connection surface and the second connection surface, the insulating layer 211 of each strand core wire 21 of the cable 20 is melted, the protective layer 22 of the cable 20 is melted, and the portion of the housing 10 is melted, so that the insulating layer 211 of each strand core wire 21, the protective layer 22 of the cable 20, and the portion of the housing 10 are melted and then connected to form the weld bead structure 30, and each strand of conductor 212 is wrapped. In this way, the housing 10 and the cable 20 are connected by means of laser welding, and the insulating layer 211 of each strand core wire 21, the protective layer 22 of the cable 20, and the part of the housing 10 are melted and then connected to form the weld bead structure 30, so that the weld bead structure 30 is sufficient to firmly connect the housing 10 and the cable 20, thereby ensuring connection reliability of the housing 10 and the cable 20, and ensuring sealing reliability between the housing 10 and the cable 20; in addition, the insulating layer 211 of each strand core wire 21, the protective layer 22 of the cable 20 and the part of the shell 10 are connected after being melted to form the weld bead structure 30, so that gaps between the protective layer 22 of the cable 20 and the hole wall surface of the assembly hole 12 of the shell 10 are effectively avoided, gaps between adjacent strands of core wires 21 in the strands of core wires 21 are effectively avoided, and gaps between the insulating layer 211 and the protective layer 22 of each strand of core wires 21 are effectively avoided.

Optionally, the housing 10 is a plastic housing. In this way, the welding reliability of the housing 10 and the cable 20 is ensured.

In this application, the camera further includes a plurality of separating devices, each of which is disposed on the outer circumferential side of each of the corresponding core wires 21, in one-to-one correspondence with the plurality of core wires 21, when the plurality of core wires 21 of the cable 20 extending into the accommodating chamber 11 of the housing 10 are arranged. In this way, the strands 21 are separated by the separating device, so that a certain safe distance exists between the strands 21, and the phenomenon that adjacent conductors 212 are electrically connected after the insulating layer 211 of each strand 21 and the protective layer 22 of the cable 20 are melted is prevented.

As shown in fig. 1, a cable sealing method for sealing and fixing a camera housing 10 and a cable 20 includes placing an end of the cable 20 at a pre-installed position of the camera housing 10; respectively pre-fixing the shell 10 and the cable 20; the junction of the housing 10 and the cable 20 is laser welded so that a part of the cable 20 and a part of the housing 10 are fused and then joined to form a weld bead structure 30.

The application provides a cable sealing processing method, which is characterized in that a shell 10 of a camera and a cable 20 are fixed and sealed in a laser welding mode, so that on one hand, the sealing reliability between the shell and the cable is ensured, and meanwhile, the connection reliability between the shell and the cable is ensured; on the other hand, the shell 10 does not need to reserve a dispensing groove, so that the processing and manufacturing difficulty of the shell 10 is reduced, and the economy of the camera is further facilitated.

In this application, by directing and projecting the infrared laser to the welding region between the housing 10 and the cable 20, the insulating layer 211 of each core wire 21 of the cable 20 is melted, the protective layer 22 of the cable 20 is melted, and the portion of the housing 10 is melted, so that the portion of the cable 20 and the portion of the housing 10 are melted alternately by the thermal expansion and the clamping force.

Alternatively, when the end of the cable 20 is placed at the preassembled position of the housing 10, the sealing process of the cable includes extending the end of the cable 20 into the fitting hole 12 of the housing 10; when the end of the cable 20 is flush with the end of the fitting hole 12 at the housing 10, the action of the cable 20 is stopped so that the cable 20 is at the preassembly position. In this way, it is ensured that the wall surface of the fitting hole 12 of the housing 10 and the circumferential outer surface of the cable 20 can be located at the welding area at the same time, facilitating the subsequent laser welding operation of both.

It should be noted that, in this application, as shown in fig. 2, the end portion of the cable 20 extends into the assembly hole 12 of the housing 10, and the end portion of the cable 20 is flush with the end of the assembly hole 12 located in the housing 10, which means that the end portion of the cable 20 having the protective layer 22 is flush with the end of the assembly hole 12 located in the housing 10, and the portion of the cable 20 located in the accommodating cavity 11 of the housing 10 only includes the multi-strand core wires 21, and the outer edge of the multi-strand core wires 21 has no protective layer 22, so that the relative positions of the multi-strand core wires 21 can be set up variably, so that the regular wiring of the multi-strand core wires 21 is facilitated when the multi-strand core wires 21 are electrically connected with the elements located in the accommodating cavity 11.

Optionally, the sealing processing method of the cable further includes pre-processing the surfaces of the housing 10 contacting the cable 20 to remove foreign matters on the surfaces of the housing 10 contacting the cable 20, respectively, before pre-fixing the housing 10 and the cable 20, respectively. In this way, it is ensured that the housing 10 and the cable 20 can be sufficiently contacted, thereby ensuring welding reliability therebetween.

Optionally, the sealing processing method of the cable further includes a wire arrangement step after the pre-fixing treatment and before the laser welding, wherein the wire arrangement step includes arranging the multi-strand wires 21 of the cable 20 extending into the housing 10 so as to maintain a predetermined spacing distance between the conductors 212 of each strand wire 21, so as to prevent electrical connection between adjacent conductors 212 after melting the insulating layers 211 of two adjacent strands of wires 21. In this way, after the welding operation of the housing 10 and the cable 20 is completed, the normal operation of the camera is ensured, and the camera is prevented from being unable to operate normally due to the occurrence of electrical connection of the adjacent plurality of conductors 212.

Alternatively, the cable 20 and the housing 10 are fixed together using a jig during the pre-fixing process of the housing 10 and the cable 20, respectively. In this way, the position of the shell 10 and the position of the cable 20 in the molten state are prevented from being changed, the molten positions of the shell 10 and the cable 20 can be prevented from being deformed by solidification to influence the whole appearance aesthetic feeling, the clamp also plays a role of giving a certain pressure to the shell 10 and the cable 20 in the molten state, and the molten area between the two can be always kept unchanged in the subsequent cooling and solidification process.

Optionally, the cable sealing processing method further includes a cooling step after the laser welding is completed, the cooling step including cooling the cable 20 and the housing 10 after the laser welding operation is completed at room temperature for a preset period of time; so that the insulating layer 211 of each strand core wire 21, the protective layer 22 of the cable 20 and the weld bead structure 30 formed by the shell 10 are solidified into a whole; the jig fixing the housing 10 and the cable 20 is removed. In this way, the welding reliability between the housing 10 and the cable 20 is ensured.

Alternatively, the above-mentioned room temperature cooling means room temperature cooling.

It should be noted that, the sealing processing method of the cable provided by the application has no material consumption, no point glue is needed, and sealing connection between the housing 10 and the cable 20 can be realized without other redundant structures.

It should be noted that, the sealing processing method of the cable provided by the application can provide the waterproof performance of the cable at the tail of the monitoring equipment with the protection level of over IP 66.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of sealing a cable, characterized in that it is used for sealing and fixing a camera housing (10) and a cable (20), said housing (10)Has a receiving chamber (11) and a mounting hole (12) which is communicated with the receiving chamber (11),the saidThe sealing processing method of the cable comprises the following steps:

-placing the end of the cable (20) in a pre-assembled position of the housing (10) of the camera;

-pre-fixing the housing (10) and the cable (20) respectively;

carrying out laser welding on the joint of the shell (10) and the cable (20) so as to enable a part of the cable (20) and a part of the shell (10) to be connected after melting to form a welding bead structure (30);

the hole wall surface of the assembly hole (12) forms a first connecting surface, the outer surface of the cable (20) positioned at the assembly hole (12) forms a second connecting surface, and the cable (20) is welded with the first connecting surface through the second connecting surface by laser so as to form the welding bead structure (30);

when the end of the cable (20) is placed at the preassembled position of the housing (10), the sealing processing method of the cable comprises the following steps: extending an end of the cable (20) into an assembly hole (12) of the housing (10); when the end of the cable (20) is flush with the end of the assembly hole (12) of the housing (10), stopping the action of the cable (20) so that the cable (20) is at the preassembly position.

2. The sealing processing method of a cable according to claim 1, wherein before the housing (10) and the cable (20) are respectively subjected to the pre-fixing treatment, the sealing processing method of a cable further comprises:

the surfaces of the housing (10) contacting the cable (20) are respectively pretreated to remove foreign matters on the surfaces of the housing (10) contacting the cable (20).

3. The sealing processing method of a cable according to claim 1, further comprising a wire-arranging step after the pre-fixing treatment and before the laser welding is performed, the wire-arranging step comprising:

-arranging the strands of core wires (21) of the cable (20) extending into the housing (10) so that the conductors (212) of the strands of core wires (21) are kept at a predetermined distance apart.

4. A cable sealing process according to claim 3, wherein the cable (20) and the housing (10) are fixed together using a jig during the pre-fixing process of the housing (10) and the cable (20) respectively.

5. The method of sealing a cable according to claim 4, further comprising a cooling step after the laser welding is completed, the cooling step comprising:

cooling the cable (20) and the shell (10) after the laser welding operation at room temperature for a preset period of time to enable the insulating layer (211) of each core wire (21), the protective layer (22) of the cable (20) and the weld bead structure (30) formed by the shell (10) to be solidified into a whole;

-removing the clamp securing the housing (10) and the cable (20).

6. A video camera, comprising:

a housing (10), the housing (10) having a receiving chamber (11) and an assembly hole (12) communicating with the receiving chamber (11);

a cable (20), wherein one end of the cable (20) passes through the assembly hole (12) and stretches into the accommodating cavity (11) to be electrically connected with an element positioned in the accommodating cavity (11);

wherein a weld bead structure (30) for laser welding and fusion connection is formed in the assembly hole (12) between the cable (20) and the shell (10);

the cable (20) comprises: -a plurality of core wires (21), each of the core wires (21) comprising a conductor (212) and an insulating layer (211), the insulating layer (211) being wrapped around the circumferential outer surface of the conductor (212); a protective layer (22), the protective layer (22) being wrapped around the circumferential outer surface of the plurality of strands of the core wires (21) located at the fitting hole (12) and outside the accommodating chamber (11); when the shell (10) and the cable (20) are subjected to laser welding, an insulating layer (211) of each strand of core wire (21) of the cable (20) is melted, a protective layer (22) of the cable (20) is melted, and a part of the shell (10) is melted, so that the insulating layer (211) of each strand of core wire (21), the protective layer (22) of the cable (20) and the part of the shell (10) are melted and then connected to form the weld bead structure (30), and each strand of conductor (212) is wrapped.

7. The camera according to claim 6, wherein the housing (10) is a plastic housing.

8. The camera of claim 6, wherein the camera further comprises:

the plurality of separating devices are in one-to-one correspondence with the plurality of core wires (21), and each separating device is sleeved on the outer periphery side of each corresponding core wire (21) when the plurality of core wires (21) of the cable (20) extending into the accommodating cavity (11) of the shell (10) are arranged.