阅读说明：本技术 视频信号转换器连接线及其加工方法 (Video signal converter connecting wire and processing method thereof ) 是由 金颢 于 2020-05-12 设计创作，主要内容包括：本发明公开了视频信号转换器连接线的加工方法,包括以下步骤：(1)先脱去连接电缆端部的外皮,露出连接电缆端部的编织层；(2)将规定好长度的铜带环冲压包覆在连接电缆端部露出的编织层的外部,然后剪去露出铜带环的多余编织层；(3)将连接电缆的芯线与接头对应焊接在一起；(4)在连接电缆的芯线与接头对应焊接的部位注塑绝缘内模；(5)在内模的外部包覆自粘铜箔；(6)将绝缘内模的外部包覆着的自粘铜箔与铜带环焊接在一起；(7)将绝缘内模的外部包覆着的自粘铜箔与接头外壳焊接在一起。本发明的优点是：加工时间短,加工难度低,能提高生产效率,能提高连接线的屏蔽性能,能提高连接线的外观质量。(The invention discloses a processing method of a video signal converter connecting wire, which comprises the following steps: (1) firstly, removing the outer skin of the end part of the connecting cable to expose the braided layer of the end part of the connecting cable; (2) punching and coating the copper belt ring with a specified length outside the exposed braided layer at the end part of the connecting cable, and then cutting off the redundant braided layer with the exposed copper belt ring; (3) correspondingly welding the core wires of the connecting cables and the joints together; (4) injecting an insulating inner mold at the position where the core wire of the connecting cable and the joint are correspondingly welded; (5) coating self-adhesive copper foil on the outer part of the inner die; (6) welding the self-adhesive copper foil coated outside the insulating inner die and the copper belt ring together; (7) and welding the self-adhesive copper foil coated outside the insulating inner die and the joint shell together. The invention has the advantages that: the processing time is short, the processing degree of difficulty is low, can improve production efficiency, can improve the shielding performance of connecting wire, can improve the appearance quality of connecting wire.)

1. Video signal converter connecting wire includes: connect and connecting cable, connect and include PCB circuit board and set up in the shell of PCB circuit board front end, connecting cable includes: the heart yearn, weave at the outside weaving layer that plays the shielding effect of heart yearn and set up in the outside sheath that plays the guard action of weaving layer, its characterized in that: the front end of connecting cable takes off the crust and exposes the weaving layer, and the outside punching press cladding of the weaving layer that exposes at the connecting cable front end has the copper strap ring, the back end wiring portion of the PCB circuit board that connects and the heart yearn of connecting cable front end are welded fastening mutually, correspond the welded position at the back end wiring portion of the PCB circuit board that connects and the heart yearn of connecting cable front end and are provided with the insulating centre form at the whole welding position of cladding, have the self-adhesion copper foil in the outside cladding of insulating centre form, the cladding is at the outside cladding of insulating centre form one end of the outside self-adhesion copper foil of insulating centre form and the shell of joint looks welded fastening, the cladding is at the other end and the copper strap ring.

2. The video signal converter connection of claim 1, wherein: the self-adhesive copper foil wrapped outside the insulating inner mold wraps the front end portion of the copper tape ring at the same time.

3. The video signal converter connection of claim 2, wherein: the width of the copper tape loop covered by the self-adhesive copper foil was 1 mm.

4. The video signal converter connection of claim 1, wherein: and the self-adhesive copper foil coated on the joint shell and the self-adhesive copper foil coated on the outer part of the insulation inner die are welded and fixed.

5. The video signal converter connection of claim 1, wherein: and the self-adhesive copper foil coated outside the insulation inner die is welded and fixed with the copper belt ring in a ring welding mode.

6. A method for processing a connection line of a video signal converter as claimed in claim 1, characterized in that: the method comprises the following steps:

(1) firstly, removing the outer skin at the front end of the connecting cable to expose the braided layer at the front end of the connecting cable;

(2) punching and coating the copper belt ring with a specified length outside the exposed braided layer at the front end of the connecting cable, and then cutting off the redundant braided layer with the exposed copper belt ring;

(3) correspondingly welding the core wire at the front end of the connecting cable and the rear-end wiring part of the PCB in the joint together;

(4) injecting an insulating inner mold at a position where a core wire at the front end of the connecting cable is welded with a rear end wiring part of the PCB in the joint correspondingly;

(5) coating self-adhesive copper foil on the outer part of the insulating inner die;

(6) welding the self-adhesive copper foil coated outside the insulating inner die and the copper belt ring together;

(7) and welding the self-adhesive copper foil coated outside the insulating internal mold and the shell of the joint together.

7. The method of claim 6, wherein: in the step (5), when the self-adhesive copper foil is coated on the outer part of the insulation inner die, the self-adhesive copper foil is used for coating a part of the copper belt ring at the same time.

8. The method of claim 7, wherein: the width of the copper tape loop covered by the self-adhesive copper foil was 1 mm.

9. The method of claim 6, wherein: in the step (6), the self-adhesive copper foil coated outside the insulating inner die is welded and fixed with the copper belt ring in a ring welding mode.

10. A method for processing a connection wire of a video signal converter according to claim 6, 7, 8 or 9, wherein: in the step (7), firstly, the shell of the joint is coated with the self-adhesive copper foil, and the self-adhesive copper foil coated on the shell of the joint and the self-adhesive copper foil coated on the outer part of the insulation inner die are welded and fixed.

Technical Field

The invention relates to the technical field of manufacturing processes of video signal converters, in particular to a connecting wire of a video signal converter and a processing method thereof.

Background

There are currently internationally a number of video signal transmission formats, such as: CVBS, VGA, DP, DVI, HDMI, USB, etc., wherein CVBS, VGA are transmission formats of analog signals, and DP, DVI, HDMI, USB are transmission formats of digital signals, which have been widely used in various devices and home appliances.

Due to different signal transmission formats, incompatibility of signal transmission between devices and electric appliances using different signal formats is caused, for example, images and videos downloaded by a computer are transmitted to a television set with only an HDMI interface for watching through a USB interface on the computer, and the watching is impossible. There is a need for a video signal converter: and converting the USB signal output by the computer into an HDMI signal format.

Due to the many signal formats, the need to convert between a large number of different format signals arises, such as: the USB signal is converted into HDMI signal, the USB signal is converted into VGA signal, the HDMI signal is converted into VGA signal, the DP signal is converted into HDMI signal, the VGA signal is converted into HDMI signal, and the like.

In these products, there is a very important technical index, namely: the technical index of electromagnetic interference (EMI) mainly describes the interference of electronic and electric products to the outside under normal work, and the index has two types of conduction interference and radiation interference, wherein the radiation interference is particularly important. The radiation interference means that signals in electronic and electric products are transmitted to the surrounding space in the form of electromagnetic waves, and interfere with other electronic and electric equipment in the surrounding space, so that the normal work of the electronic and electric equipment is influenced, and the other equipment can be out of order or even damaged in serious cases. Therefore, how to reduce the electromagnetic interference is a particularly important issue when developing and designing electronic and electric products.

When solving the problem of electromagnetic interference of a video signal converter, firstly, how to reduce the outward radiation of signals in the product when the signals are transmitted in a cable or how to reduce the outward radiation of the transmitted signals by improving the shielding performance of a connecting line is to be solved.

Since the connection line in the converter is composed of three parts: one section is connecting cable, and connecting cable includes inside heart yearn, weaves at the outside weaving layer that plays the shielding effect of heart yearn and sets up the crust that plays the guard action outside weaving layer, and wherein the weaving layer comprises 16 groups and 8 copper wires of every group, and another section is various joints, and the interlude is the welded part that the heart yearn of joint and connecting cable corresponds. The shielding performance of the connection line has four determinants: the shielding performance of the connecting cable, the shielding performance of the connector shell, the copper foil coated outside the welding part (middle part) corresponding to the connector and the core wire, and the connection of the copper foil coated outside the welding part corresponding to the shielding layer and the core wire of the cable are well solved by the first three determining factors, and most importantly, the mutual connection of the copper foil coated outside the welding part corresponding to the shielding layer and the core wire of the cable is difficult to realize, so that the shielding performance of the whole cable can be ensured not only by ensuring the reliable conduction performance of an electric appliance, but also ensuring that the gap after the connection is less than 0.15 mm.

The connection between the joint shell and the copper foil coated outside the middle part is better realized by only adopting self-adhesive copper foil to coat the joint shell and welding to connect the joint shell and the copper foil in a seamless way, while the shielding of the connecting cable is realized by the braided layer of the connecting cable, the shielding performance of the braided layer is very good, but how to realize the connection between the cable shielding layer (namely, the braided layer) and the copper foil coated outside the middle part in a seamless way is the most critical.

As shown in fig. 1, the method for processing the connection lines of the currently used video signal converter includes the following steps:

(1) firstly, removing the outer skin of the end part of the connecting cable to expose the braided layer of the end part of the connecting cable;

(2) reversely brushing the braided wires of the braided layer exposed at the end part of the connecting cable to expose the core wires of the end part of the connecting cable;

(3) welding the core wire of the connecting cable with the joint;

(4) injecting an inner mold at the welding position of the core wire of the connecting cable and the joint;

(5) coating self-adhesive copper foil on the outer part of the inner die;

(6) reversely brushing the woven wires connected with the end part of the cable back and covering the woven wires outside the self-adhesive copper foil;

(7) welding the self-adhesive copper foil and the weaving wire together;

(8) and welding the self-adhesive copper foil and the joint shell together.

In the above processing method, the braided wire in the connecting cable is covered on the self-adhesive copper foil outside the inner mold of the middle part, and then the braided wire and the self-adhesive copper foil are welded with each other, so that the purpose of connecting the shielding layer of the connecting cable and the shielding layer of the middle part is achieved.

The processing method of the connecting line has the following defects: 1) When the inner mold is injected, the glue sealing position of the glue material is on the core wire of the connecting cable, so that the glue material is easily flushed to the inside of the connecting cable, and the appearance is poor; 2) when the inner mold is injected, the braided wires which are brushed reversely for the first time are easily broken by the mold, so that the number of the braided wires welded with the copper foil is reduced, the welded gap is enlarged, the appearance quality of the connecting wire is influenced, and the shielding performance of the connecting wire is reduced; 3) after the inner mold is injected, when the copper wire is brushed on the copper foil in a reverse mode again, the copper wire is not easy to brush in a reverse mode evenly, gaps are enlarged, the appearance quality of the connecting wire is affected, and the shielding performance of the connecting wire is reduced; 4) the copper wire is reversely brushed on the copper foil and cannot be tightly attached to the copper foil, so that the welding is very difficult, and the production efficiency is influenced; 5) when the weaving wire and the copper foil are welded, the welding time needs to be accurately mastered, otherwise, one side of the weaving wire is easily welded, the welding time is long when the other side of the weaving wire is welded, and the welded weaving wire is detached, so that the production efficiency is influenced.

Disclosure of Invention

The first purpose of the invention is to provide a video signal converter connecting wire which has short processing time and low processing difficulty, can improve the production efficiency, can improve the shielding performance of the connecting wire and can improve the appearance quality of the connecting wire.

In order to achieve the purpose, the invention adopts the following technical scheme: video signal converter connecting wire includes: connect and connecting cable, connect and include PCB circuit board and set up in the shell of PCB circuit board front end, connecting cable includes: the utility model provides a cable, its structure includes the heart yearn, weave at the outside weaving layer that plays the shielding effect of heart yearn and set up in the outside sheath that plays the guard action of weaving layer, the front end of connecting cable takes off the sheath and exposes the weaving layer, and the outside punching press cladding of the weaving layer that exposes at the connecting cable front end has the copper strap ring, the rear end wiring portion of the PCB circuit board that connects and the heart yearn of connecting cable front end are welded fastening mutually, correspond the welded position at the rear end wiring portion of the PCB circuit board that connects and the heart yearn of connecting cable front end and are provided with the insulating centre form at the whole welding position of cladding, have the self-adhesion copper foil in the outside cladding of insulating centre form, the one end of the outside self-adhesion copper foil of cladding in insulating centre form is welded fastening mutually with.

Further, the video signal converter connecting line described above, wherein: the self-adhesive copper foil wrapped outside the insulating inner mold wraps the front end portion of the copper tape ring at the same time.

Further, the video signal converter connecting line described above, wherein: the width of the copper tape loop covered by the self-adhesive copper foil was 1 mm.

Further, the video signal converter connecting line described above, wherein: and the self-adhesive copper foil coated on the joint shell and the self-adhesive copper foil coated on the outer part of the insulation inner die are welded and fixed.

Further, the video signal converter connecting line described above, wherein: and the self-adhesive copper foil coated outside the insulation inner die is welded and fixed with the copper belt ring in a ring welding mode.

Through the implementation of the technical scheme, the invention has the beneficial effects that: the processing time is short, the processing degree of difficulty is low, can improve production efficiency, can improve the shielding performance of connecting wire, can improve the appearance quality of connecting wire.

The second purpose of the invention is to provide a processing method of the video signal converter connecting wire, which has short processing time and low processing difficulty, can improve the production efficiency, can improve the shielding performance of the connecting wire and can improve the appearance quality of the connecting wire.

In order to achieve the purpose, the invention adopts the following technical scheme: the processing method of the video signal converter connecting wire comprises the following steps:

(1) firstly, removing the outer skin at the front end of the connecting cable to expose the braided layer at the front end of the connecting cable;

(2) punching and coating the copper belt ring with a specified length outside the exposed braided layer at the front end of the connecting cable, and then cutting off the redundant braided layer with the exposed copper belt ring;

(3) correspondingly welding the core wire at the front end of the connecting cable and the rear-end wiring part of the PCB in the joint together;

(4) injecting an insulating inner mold at a position where a core wire at the front end of the connecting cable is welded with a rear end wiring part of the PCB in the joint correspondingly;

(5) coating self-adhesive copper foil on the outer part of the insulating inner die;

(6) welding the self-adhesive copper foil coated outside the insulating inner die and the copper belt ring together;

(7) and welding the self-adhesive copper foil coated outside the insulating internal mold and the shell of the joint together.

Further, the processing method of the video signal converter connecting line comprises: in the step (5), when the self-adhesive copper foil is coated on the outer part of the insulation inner die, the self-adhesive copper foil is used for coating a part of the copper belt ring at the same time.

Further, the processing method of the video signal converter connecting line comprises: the width of the copper tape loop covered by the self-adhesive copper foil was 1 mm.

Further, the processing method of the video signal converter connecting line comprises: in the step (6), the self-adhesive copper foil coated outside the insulating inner die is welded and fixed with the copper belt ring in a ring welding mode.

Further, the processing method of the video signal converter connecting line comprises: in the step (7), firstly, the shell of the joint is coated with the self-adhesive copper foil, and the self-adhesive copper foil coated on the shell of the joint and the self-adhesive copper foil coated on the outer part of the insulation inner die are welded and fixed.

Through the implementation of the technical scheme, the invention has the beneficial effects that: the processing time is short, the processing degree of difficulty is low, can improve production efficiency, can improve the shielding performance of connecting wire, can improve the appearance quality of connecting wire.

Drawings

Fig. 1 is a schematic processing flow diagram of a method for processing a video signal converter connecting wire according to the background of the invention.

Fig. 2 is a schematic structural diagram of a connection line of a video signal converter according to the present invention.

Fig. 3 is a schematic processing flow diagram of a method for processing a video signal converter connection line according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 2, the video signal converter connecting line includes: connect and connecting cable, connect and include PCB circuit board 1 and set up in the shell 2 of 1 front end of PCB circuit board, connecting cable includes: a core wire 3, a braid 4 braided outside the core wire 3 for shielding, and a sheath 5 provided outside the braid 4 for protecting, wherein the sheath is removed from the tip of the connection cable to expose the braid 4, the outer part of the braid layer 4 exposed at the front end of the connecting cable is stamped and coated with a copper belt ring 6, the rear end wiring part of the PCB circuit board 1 of the joint is welded and fixed with the core wire 3 at the front end of the connecting cable, an insulating inner mold 7 for coating the whole welding part is arranged at the welding part of the rear end wiring part of the PCB 1 of the joint and the core wire 3 at the front end of the connecting cable, a first self-adhesive copper foil 8 is coated outside the insulating inner die 7, one end of the first self-adhesive copper foil 8 coated outside the insulating inner die 7 is welded and fixed with the outer shell 2 of the joint, the other end of the first self-adhesive copper foil 8 coated outside the insulating inner die 7 is welded and fixed with the copper strip ring 6 in a ring welding mode;

in this embodiment, the first self-adhesive copper foil 8 coated outside the inner insulating mold 7 simultaneously coats the front end portion of the copper belt ring 6, and the width of the copper belt ring 6 covered by the first self-adhesive copper foil 8 is 1mm, so that after coating, the first self-adhesive copper foil 8 and the copper belt ring 6 are tightly adhered and fixed without looseness, and then the first self-adhesive copper foil 8 and the copper belt ring 6 are welded (ring welding) together, which is extremely easy; in this embodiment, the second self-adhesive copper foil 9 is wrapped outside the connector housing 2, and the second self-adhesive copper foil 9 wrapped around the connector housing 2 is welded and fixed to the first self-adhesive copper foil 8 wrapped around the inner insulating mold 7.

As shown in fig. 3, the method for processing the video signal converter connecting line includes the following steps:

(1) firstly, removing the sheath 5 at the front end of the connecting cable to expose the braid 4 at the front end of the connecting cable;

(2) punching and coating the copper belt ring 6 with a specified length outside the braided layer 4 exposed at the front end of the connecting cable, and then cutting off the redundant braided layer 4 with the exposed copper belt ring 6; wherein the copper strip ring 6 is formed by stamping a copper strip with the width of 6mm and the thickness of 0.35 mm;

(3) correspondingly welding a core wire 3 at the front end of the connecting cable with a rear-end wiring part of the PCB 1 in the connector;

(4) an insulating inner die 7 is injected at the position where a core wire 3 at the front end of a connecting cable is correspondingly welded with a rear end wiring part of a PCB (printed Circuit Board) 1 in a joint;

(5) the first self-adhesive copper foil 8 is coated on the outer part of the insulating inner die 7, and when the first self-adhesive copper foil 8 is coated on the outer part of the insulating inner die 7, the first self-adhesive copper foil 8 is used for coating a part of the copper belt ring 6 at the same time, the width covered by the first self-adhesive copper foil 8 on the copper belt ring 6 is 1mm, so that after coating, the first self-adhesive copper foil 8 and the copper belt ring 6 are tightly pasted and fixed without looseness, and then the first self-adhesive copper foil 8 and the copper belt ring 6 are welded (ring welding), which is extremely easy;

(6) welding the first self-adhesive copper foil 8 coated outside the insulating inner die 7 with the copper belt ring 6 in a ring welding mode;

(7) the first self-adhesive copper foil coated outside the insulating internal mold 7 is welded with the shell 2 of the joint, in this embodiment, the second self-adhesive copper foil 9 is coated on the shell 2 of the joint, and then the second self-adhesive copper foil 9 coated on the shell 2 of the joint and the first self-adhesive copper foil 8 coated outside the insulating internal mold 7 are welded and fixed.

In the invention, the copper strip ring plays a role of a bridge, 1) the copper strip has good electrical conductivity; 2) the punched copper strip ring can realize seamless butt joint as long as the length of the copper strip and the cavity of the die are controlled, so that the copper strip ring has good shielding performance; 3) the pressure resistance of the annular copper belt ring is much better than that of the core wire, so that the copper belt ring is used as a glue sealing position of the inner die when the inner die is injected, and the glue punching phenomenon of a glue material to the inside of the cable is avoided; 4) the copper strap ring is coated on the braided layer of the cable, so that the integrity and uniformity of the braided wire are kept to the maximum extent; 5) when the inner mold is injected, the mold is annularly pressed on the copper belt ring, and the copper belt ring is firm and not easy to deform, so that the injection mold cannot crush the braided wire wrapped in the copper belt ring and damage the shielding performance of the braided wire; 6) because the copper strip is adopted, the welding between the cable braided layer and the copper foil at the middle part is changed into the welding between the copper strip ring and the copper foil, and the defects of pressure breakage and uneven reverse brushing of the braided wire in the prior art do not exist; 7) the copper foil is slightly widened, when the copper foil is coated outside the inner die, one part of the copper strip is coated, so that after coating, the copper foil and the copper strip are tightly adhered and fixed without looseness, and then the copper foil and the copper strip are welded together very easily;

therefore, compared with the traditional processing method, the processing method has the advantages of short processing time, low processing difficulty, capability of improving the production efficiency, shielding performance of the connecting wire and appearance quality of the connecting wire.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.