A connection structure between a metal conductor and carbon fiber and a manufacturing method thereof

Abstract

The present application relates to the technical field of metal and non-metal connection, and discloses a connection structure of a metal wire and a carbon fiber and a manufacturing method, wherein the connection structure comprises: a metal wire, comprising a plurality of metal wires; a carbon fiber heating wire, comprising a plurality of carbon fiber wires; a connecting terminal, in the shape of a tube sleeve, wherein a plurality of metal wires are crimped into one end of the connecting terminal tube sleeve, and a plurality of carbon fiber wires are crimped into the other end; the plurality of metal wires are not in contact with the plurality of carbon fiber wires, and the connecting terminal comprises a conductive material, which is used for conducting electricity between the plurality of metal wires and the plurality of carbon fiber wires. In the above manner, the present application improves the connection effect between the carbon fiber wires and the metal wires.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of metal and non-metal connection, and specifically to a connection structure between a metal wire and carbon fiber and a manufacturing method. Background Art

[0002] Carbon fiber wire is widely used in the field of electric heating. When used, the carbon fiber wire needs to be connected to a metal wire to achieve circuit conduction. At present, the carbon fiber wire and the metal wire of the metal wire are usually bundled together through another metal wire to form a lapped structure of the carbon fiber wire and the metal wire.

[0003] This type of connection between metal and non-metal can easily lead to a situation where the metal wire and the carbon fiber wire are not pressed tightly together, resulting in poor contact between the two and discharge and sparking.

[0004] Therefore, how to improve the connection effect between carbon fiber filaments and metal filaments has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide a connection structure of a metal wire and a carbon fiber and a manufacturing method, which are used to solve the problem of poor connection between carbon fiber filaments and metal filaments in the prior art.

[0006] According to one aspect of an embodiment of the present application, a connection structure of a metal wire and a carbon fiber is provided, the connection structure comprising: a metal wire, comprising a plurality of metal wires; a carbon fiber heating wire, comprising a plurality of carbon fiber wires; a connecting terminal, in the shape of a tube sleeve, wherein one end of the connecting terminal tube sleeve is crimped with a plurality of metal wires, and the other end is crimped with a plurality of carbon fiber wires; the plurality of metal wires are not in contact with the plurality of carbon fiber wires, and the connecting terminal comprises a conductive material for conducting electricity between the plurality of metal wires and the plurality of carbon fiber wires.

[0007] Preferably, a limit block is formed on the inner wall of the connecting terminal, and the limit block divides the interior of the connecting terminal into a first crimping space and a second crimping space, and multiple metal wires are crimped together in the first crimping space, and multiple carbon fiber wires are crimped together in the second crimping space.

[0008] Preferably, the metal conductor includes a plurality of metal wires and a first insulating layer wrapped around the plurality of metal wires, each of the plurality of metal wires includes an exposed portion extending outside the first insulating layer, and the exposed portions of the plurality of metal wires each have a certain length, the exposed portions of the plurality of metal wires are folded at least once, and the exposed portions of the plurality of metal wires after folding are crimped together in the first crimping space.

[0009] Preferably, the carbon fiber heating wire includes a plurality of carbon fiber filaments and a second insulating layer wrapped around the plurality of carbon fiber filaments, each of the plurality of carbon fiber filaments includes an exposed portion extending outside the second insulating layer, and the exposed portions of the plurality of carbon fiber filaments have a certain length, the exposed portions of the plurality of carbon fiber filaments are folded at least once, and the exposed portions of the plurality of carbon fiber filaments after folding are crimped together in the second crimping space.

[0010] Preferably, the connecting terminal is a nickel-plated copper tube terminal.

[0011] Preferably, the metal wire is a copper wire.

[0012] According to another aspect of an embodiment of the present application, a manufacturing method is provided. Preferably, the manufacturing method is used to manufacture a connection structure as described in any of the above embodiments, wherein the metal conductor of the connection structure comprises a plurality of metal wires and a first insulating layer wrapped around the plurality of metal wires, and the carbon fiber heating wire of the connection structure comprises a plurality of carbon fiber wires and a second insulating layer wrapped around the plurality of carbon fiber wires; the manufacturing method comprises: stripping off a certain length of the first insulating layer at one end of the metal conductor to expose the plurality of metal wires; inserting the exposed plurality of metal wires into one end of a connecting terminal at the same time, and connecting the plurality of metal wires to the connecting terminal by crimping; stripping off a certain length of the second insulating layer at one end of the carbon fiber heating wire to expose the plurality of carbon fiber wires; inserting the exposed plurality of carbon fiber wires into the other end of the connecting terminal at the same time, and connecting the plurality of carbon fiber wires to the connecting terminal by crimping.

[0013] Preferably, before stripping off a certain length of the first insulation layer at one end of the metal wire to expose multiple metal wires, the manufacturing method also includes: forming at least two cuts aligned along the axial direction of the connecting terminal on the outer wall at the center of the connecting terminal, and the two cuts are parallel to the cross-section of the connecting terminal; pressing down the arc surface of the connecting terminal between the cuts along the symmetry axis of the two cuts to obtain a limit block protruding on the inner wall of the connecting terminal, the limit block divides the interior of the connecting terminal into a first crimping space and a second crimping space, multiple metal wires are crimped in the first crimping space, and multiple carbon fiber wires are crimped in the second crimping space.

[0014] Preferably, the exposed multiple metal wires are inserted into one end of the connecting terminal at the same time, and the multiple metal wires and the connecting terminal are connected by crimping, including: folding the exposed multiple metal wires in half at least once; crimping the folded parts of the multiple metal wires into the first crimping space through a cold pressing process to form a connection between the multiple metal wires and the connecting terminal.

[0015] Preferably, the exposed multiple carbon fiber filaments are inserted into the other end of the connecting terminal at the same time, and the multiple carbon fiber filaments and the connecting terminal are connected by crimping, including: folding the exposed multiple carbon fiber filaments in half at least once; crimping the folded parts of the multiple carbon fiber filaments in the second crimping space through a cold pressing process to form a connection between the multiple carbon fiber filaments and the connecting terminal.

[0016] The embodiment of the present application crimps a plurality of metal wires to one end of a connecting terminal and a plurality of carbon fiber wires to the other end of the connecting terminal, and the plurality of metal wires do not contact the plurality of carbon fiber wires, and conducts electricity between the plurality of metal wires and the plurality of carbon fiber wires through the connecting terminal, so as to avoid a situation in which, when the plurality of metal wires and the plurality of carbon fiber wires are overlapped, the plurality of metal wires and the plurality of carbon fiber wires undergo different degrees of deformation due to different thermal expansion coefficients, thereby forming gaps between the plurality of metal wires and the plurality of carbon fiber wires, thereby avoiding poor contact between the plurality of metal wires and the plurality of carbon fiber wires and improving the connection effect between the carbon fiber wires and the metal wires.

[0017] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings: Figure 1 A schematic diagram of the internal structure of the connection structure provided in an embodiment of the present application is shown; Figure 2 The embodiment of the present application provides Figure 1 A magnified view of the connecting structure; Figure 3 A plan view of a connection terminal provided in an embodiment of the present application is shown.

[0019] The reference numerals in the specific implementation manner are as follows: 1. Connection structure; 11. connecting terminal; 111. first crimping space; 112. second crimping space; 113. limiting block; 12. metal conductor; 121. metal wire; 122. first insulating layer; 13. Carbon fiber heating wire; 131. Carbon fiber filament; 132. Second insulating layer. DETAILED DESCRIPTION

[0020] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein.

[0021] In the prior art, the connection between metal and non-metal is achieved by overlapping the metal and non-metal at one place and then fixing the overlap, for example, by putting a metal shell on the overlap and compacting the overlap in the metal shell. This metal and non-metal connection method is prone to discharge and sparking at the overlap.

[0022] The inventors of the present application have found in practice that there is a large difference between the thermal expansion coefficients of the metal wire and the carbon fiber wire. The difference in thermal expansion coefficients causes the overlap of the metal wire and the carbon fiber wire to become fluffy when the carbon fiber wire is used to generate heat due to different degrees of formation of the metal wire and the carbon fiber wire. The metal wire and the carbon fiber wire cannot be compacted, resulting in discharge and sparking at the overlap of the metal wire and the carbon fiber wire.

[0023] Based on this, the inventor of the present application discovered that the metal wire and the carbon fiber wire do not need to be directly connected, but can be connected based on a conductive intermediate piece to avoid the situation where the connection becomes loose due to different degrees of formation at the connection. Specifically, the metal wire can be crimped to one end of the connecting terminal sleeve, and the carbon fiber wire can be crimped to the other end of the connecting terminal sleeve. There is no contact between the multiple metal wires and the multiple carbon fiber wires, and the two are conductively connected through the connecting terminal to avoid the situation where the metal wire and the carbon fiber wire are fluffy at the overlap when they are directly overlapped.

[0024] This application is applicable to products such as electric blankets, floor heating, and thermal clothing.

[0025] Specifically, see Figure 1~Figure 3 The embodiment of the present application provides a connection structure of a metal wire and a carbon fiber. Preferably, the connection structure 1 includes: a metal wire 12, including a plurality of metal wires 121; a carbon fiber heating wire 13, including a plurality of carbon fiber wires 131; a connecting terminal 11, which is in a tube sleeve shape, and a plurality of metal wires 121 are crimped into one end of the tube sleeve of the connecting terminal 11, and a plurality of carbon fiber wires 131 are crimped into the other end; the plurality of metal wires 121 are not in contact with the plurality of carbon fiber wires 131, and the connecting terminal 11 includes a conductive material for conducting electricity between the plurality of metal wires 121 and the plurality of carbon fiber wires 131.

[0026] Preferably, the connection terminal 11 is a nickel-plated copper tube terminal, and the metal wire 12 is a copper wire.

[0027] The method for making the connection structure 1 is as follows: S110 , peeling off a first insulating layer 122 at one end of the metal wire 12 by a certain length to expose a plurality of metal wires 121 .

[0028] S120 , inserting the exposed plurality of metal wires 121 into one end of the connection terminal 11 at the same time, and connecting the plurality of metal wires 121 and the connection terminal 11 by crimping.

[0029] S130, peeling off a certain length of the second insulating layer 132 at one end of the carbon fiber heating wire 13 to expose a plurality of carbon fiber filaments 131.

[0030] S140, inserting the exposed plurality of carbon fiber threads 131 into the other end of the connection terminal 11 at the same time, and connecting the plurality of carbon fiber threads 131 and the connection terminal 11 by crimping.

[0031] In order to avoid overlapping the multiple metal wires 121 and the multiple carbon fiber wires 131 during production, a limiting block 113 is further formed on the inner wall of the connecting terminal 11, and the limiting block 113 divides the interior of the connecting terminal 11 into a first crimping space 111 and a second crimping space 112. The multiple metal wires 121 are crimped together in the first crimping space 111, and the multiple carbon fiber wires 131 are crimped together in the second crimping space 112.

[0032] The method for making the limit block 113 is as follows: S101 , forming at least two cuts aligned along the axial direction of the connecting terminal 11 on the outer wall at the center of the connecting terminal 11 , wherein the two cuts are parallel to the cross section of the connecting terminal 11 .

[0033] S103, pressing down the arc surface of the connecting terminal 11 between the two cutting marks along the symmetry axis of the two cutting marks to obtain a limit block 113 protruding from the inner wall of the connecting terminal 11, and the limit block 113 divides the interior of the connecting terminal 11 into a first crimping space 111 and a second crimping space 112, wherein a plurality of metal wires 121 are crimped in the first crimping space 111, and a plurality of carbon fiber wires 131 are crimped in the second crimping space 112.

[0034] Specifically, see Figure 3 , Figure 3 The two parallel dotted lines on the connecting terminal 11 in the figure are cut marks on the cylindrical surface of the connecting terminal 11; Figure 3 The dotted line between the two cut marks on the connecting terminal 11 is the pressing line, and the pressing line is also the symmetry axis of the two cut marks; press down along the pressing line, and the surfaces on both sides of the pressing line are along Figure 3 The direction indicated by the arrow is concave to form a Figure 2 The "V" shaped structure shown in .

[0035] A limit block 113 is formed by pressing down along the downward pressure line so that when the multiple metal wires 121 are inserted into the connecting terminal 11, they are restricted to the first crimping space 111, and when the multiple carbon fiber wires 131 are plugged into the connecting terminal 11, they are restricted to the second crimping space 112, thereby avoiding the situation where the metal wires 121 and the carbon fiber wires 131 are overlapped at one place when making the connecting terminal 11.

[0036] Furthermore, in order to avoid the overlap of the metal wire 121 and the carbon fiber wire 131, preferably, the metal wire 12 includes a plurality of metal wires 121 and a first insulating layer 122 wrapped outside the plurality of metal wires 121, each of the plurality of metal wires 121 includes an exposed portion extending outside the first insulating layer 122, and the exposed portions of the plurality of metal wires 121 have a certain length, and the exposed portions of the plurality of metal wires 121 are folded at least once, and the exposed portions of the plurality of metal wires 121 after folding are crimped together to the first insulating layer 122. A crimping space 111; preferably, the carbon fiber heating wire 13 includes a plurality of carbon fiber filaments 131 and a second insulating layer 132 wrapped around the plurality of carbon fiber filaments 131, each of the plurality of carbon fiber filaments 131 includes an exposed portion extending outside the second insulating layer 132, and the exposed portions of the plurality of carbon fiber filaments 131 have a certain length, and the exposed portions of the plurality of carbon fiber filaments 131 are folded at least once, and the exposed portions of the plurality of carbon fiber filaments 131 after folding are crimped together in the second crimping space 112.

[0037] The exposed multiple metal wires 121 are folded in half at least once; the folded parts of the multiple metal wires 121 are crimped to the first crimping space 111 through a cold pressing process to form a connection between the multiple metal wires 121 and the connecting terminal 11; the exposed multiple carbon fiber wires 131 are folded in half at least once; the folded parts of the multiple carbon fiber wires 131 are crimped to the second crimping space 112 through a cold pressing process to form a connection between the multiple carbon fiber wires 131 and the connecting terminal 11. On the one hand, it can avoid the ends of some metal wires 121 extending into the second crimping space 112 and contacting the carbon fiber wires 131, and the ends of some carbon fiber wires 131 extending into the first crimping space 111 and contacting the metal wires 121. On the other hand, it can also improve the stability of the multiple metal wires 121 being crimped to the first crimping space 111 and the multiple carbon fiber wires 131 being crimped to the second crimping space 112.

[0038] In the embodiment of the present application, a plurality of metal wires 121 are crimped to one end of a connecting terminal 11, and a plurality of carbon fiber wires 131 are crimped to the other end of the connecting terminal 11, and the plurality of metal wires 121 and the plurality of carbon fiber wires 131 are not in contact with each other, and electricity is conducted between the plurality of metal wires 121 and the plurality of carbon fiber wires 131 through the connecting terminal 11, so as to avoid the situation in which, when the plurality of metal wires 121 and the plurality of carbon fiber wires 131 are overlapped, the plurality of metal wires 121 and the plurality of carbon fiber wires 131 are deformed to different degrees due to different thermal expansion coefficients, and gaps are formed between the plurality of metal wires 121 and the plurality of carbon fiber wires 131, thereby avoiding poor contact between the plurality of metal wires 121 and the plurality of carbon fiber wires 131 and improving the connection effect between the carbon fiber wires and the metal wires.

[0039] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0040] Similarly, it should be understood that in order to streamline the present application and aid in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present application, the various features of the embodiments of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: that the claimed application requires more features than those explicitly recited in each claim.

[0041] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and set in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and may be divided into multiple submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0042] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be constructed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present application may be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A connection structure of a metal wire and carbon fiber, characterized in that: The connection structure comprises: A metal conductor, comprising a plurality of metal wires; A carbon fiber heating wire, comprising a plurality of carbon fiber filaments; A connecting terminal in the shape of a tube sleeve, wherein one end of the connecting terminal tube sleeve is crimped with the plurality of metal wires, and the other end of the connecting terminal tube sleeve is crimped with the plurality of carbon fiber wires; The plurality of metal wires are not in contact with the plurality of carbon fiber wires, and the connection terminal comprises a conductive material for conducting electricity between the plurality of metal wires and the plurality of carbon fiber wires.

2. The connection structure according to claim 1, characterized in that: The inner wall of the connecting terminal forms a limiting block, which divides the interior of the connecting terminal into a first crimping space and a second crimping space. The plurality of metal wires are crimped together in the first crimping space, and the plurality of carbon fiber wires are crimped together in the second crimping space.

3. The connection structure according to claim 2, characterized in that: The metal conductor includes a plurality of metal wires and a first insulating layer wrapped around the plurality of metal wires, each of the plurality of metal wires includes an exposed portion extending outside the first insulating layer, and the exposed portions of the plurality of metal wires each have a certain length, and the exposed portions of the plurality of metal wires are folded at least once, and the exposed portions of the plurality of metal wires after folding are crimped together in the first crimping space.

4. The connection structure according to claim 2, characterized in that: The carbon fiber heating wire includes a plurality of carbon fiber filaments and a second insulating layer wrapped around the plurality of carbon fiber filaments, each of the plurality of carbon fiber filaments includes an exposed portion extending outside the second insulating layer, and the exposed portions of the plurality of carbon fiber filaments have a certain length, and the exposed portions of the plurality of carbon fiber filaments are folded at least once, and the exposed portions of the plurality of carbon fiber filaments after folding are crimped together in the second crimping space.

5. The connection structure according to claim 1, characterized in that: The connecting terminal is a nickel-plated copper tube terminal.

6. The connection structure according to claim 1, characterized in that: The metal wire is a copper wire.

7. A production method, characterized in that: The manufacturing method is used to manufacture the connection structure according to any one of claims 1 to 6, wherein the metal wire of the connection structure comprises a plurality of metal wires and a first insulating layer wrapped outside the plurality of metal wires, and the carbon fiber heating wire of the connection structure comprises a plurality of carbon fiber wires and a second insulating layer wrapped outside the plurality of carbon fiber wires; the manufacturing method comprises: Stripping off a first insulating layer at one end of the metal wire by a certain length to expose a plurality of metal wires; Inserting the exposed multiple metal wires into one end of the connecting terminal at the same time, and connecting the multiple metal wires and the connecting terminal by crimping; The second insulating layer at one end of the carbon fiber heating wire is peeled off by a certain length to expose a plurality of carbon fiber filaments; The exposed plurality of carbon fiber threads are simultaneously inserted into the other end of the connection terminal, and the plurality of carbon fiber threads and the connection terminal are connected by crimping.

8. The method according to claim 7, characterized in that: Before stripping off a certain length of the first insulating layer at one end of the metal wire to expose the plurality of metal wires, the manufacturing method further comprises: At least two cuts are formed on the outer wall at the center of the connecting terminal and are aligned along the axial direction of the connecting terminal, and both cuts are parallel to the cross section of the connecting terminal; The arc surface of the connecting terminal between the two cutting marks is pressed down along the symmetry axis of the two cutting marks to obtain a limit block protruding on the inner wall of the connecting terminal, and the limit block divides the interior of the connecting terminal into a first crimping space and a second crimping space. The multiple metal wires are crimped in the first crimping space, and the multiple carbon fiber wires are crimped in the second crimping space.

9. The manufacturing method according to claim 8, characterized in that: The method of inserting the exposed plurality of metal wires into one end of the connection terminal and connecting the plurality of metal wires and the connection terminal by crimping comprises: Fold the exposed wires in half at least once; The folded parts of the plurality of metal wires are crimped to the first crimping space by a cold pressing process to form a connection between the plurality of metal wires and the connecting terminal.

10. The manufacturing method according to claim 8, characterized in that: The method of inserting the exposed plurality of carbon fiber threads into the other end of the connection terminal and connecting the plurality of carbon fiber threads and the connection terminal by crimping comprises: Folding the exposed plurality of carbon fiber filaments in half at least once; The folded parts of the plurality of carbon fiber filaments are crimped into the second crimping space by a cold pressing process, so as to form a connection between the plurality of carbon fiber filaments and the connecting terminal.

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