Conductive terminal for connecting a wire

Abstract

The application discloses a conductive terminal for connecting wires, comprising: a first connecting part; a first arm extending from a first end of the first connecting part in a first direction; a second arm comprising a first part extending from a second end of the first connecting part in a second direction at an angle to the first direction, wherein the first part comprises: a wire contact part arranged on the first part in the second direction and configured to pierce the insulation layer of a wire placed in a terminal skeleton when the conductive terminal is inserted into the terminal skeleton in a direction opposite to the first direction to form an electrical connection with the wire. When a plurality of the conductive terminals are used to connect wires in the terminal skeleton, the spacing between the conductive terminals is smaller, and each conductive terminal can connect more wires, so that the conductive terminal can meet the needs of more application scenarios.

Description

Technical Field

[0001] The present invention relates to conductive terminals for connecting wires, and in particular, to a conductive terminal capable of connecting multiple wires with a small spacing between the terminals. Background Technology

[0002] In the manufacturing process of micro motors, it is often necessary to electrically connect multiple wires. A wire is an insulated electrical wire used to manufacture coils or windings in electrical products. According to its basic composition, a wire consists of a conductive core and an electrical insulation layer, with the insulation layer surrounding the conductive core to provide electrical isolation. For the electrical connection of multiple wires, industrial processing uses conductive terminals to crimp them together, a method that is characterized by eliminating the need for welding and producing no pollution.

[0003] Conductive terminals are used to crimp wires, with one end serving as a tap for electrical connection to external electrical components such as PCB circuit boards and electrical connectors. In practical applications, it is desirable for the conductive terminals to have a small gap between them after crimping, i.e., a small tap spacing, to meet the needs of a wider range of applications.

[0004] Figure 1 A perspective view of a conductive terminal as an example of prior art is shown. Figure 1 It is understood that the conductive terminal 10 includes a first connecting portion 101, a first arm 102, and a second arm 103. The first arm 102 extends from the first end 1011 of the first connecting portion 101 along a first direction and includes a terminal contact portion 1021. The second arm 103 can be considered to include a first portion 1031 extending from the second end 1012 of the first connecting portion 101 along a second direction at an angle to the first direction. The first portion 1031 includes a wire contact portion 1032 for piercing a wire. This wire contact portion 1032 includes multiple sharp protruding edges 1033 formed on the first portion in a direction perpendicular to the second direction. Figure 1 The image also shows multiple crimped wires 20, which extend along a second direction and are arranged in parallel.

[0005] exist Figure 1 In this process, the direction of each raised edge is perpendicular to the second direction. To form the raised edges of this wire contact portion, the prior art employs a scraping process. Scraping refers to using a scraper to remove a small amount of metal from the surface of a workpiece, leaving a groove on the workpiece surface. For example, in... Figure 1 In the first part, the rows of grooves are the marks left after scraping. At the same time, during the rapid scraping process, small burrs will form on the edges of the grooves, which are the raised edges in the prior art.

[0006] Figure 2 It shows Figure 1 This is a schematic diagram showing the conductive terminals placed within the terminal frame, where AA' represents the terminal spacing. (Combined with...) Figure 1 The first connection portion 101 of the conductive terminal is located at Figure 2 At the bottom of the intermediate terminal frame, the terminal contact portion 1021 of the conductive terminal faces upward. Figure 2 The arrangement direction of the multiple conductive terminals can be regarded as the direction in which the raised edge 1033 extends, that is, arranged along a direction perpendicular to the second direction. Figure 2 The terminal spacing AA' is related to the width BB' of the conductive terminal and also to the number of wires being crimped. Similar to... Figure 1 and Figure 2 The prior art shown allows each conductive terminal to crimp up to two wires, and the terminal spacing is typically above 6.1 mm. Summary of the Invention

[0007] This invention provides a conductive terminal for connecting wires. When multiple conductive terminals are used to connect wires within a terminal frame, the spacing between the conductive terminals is smaller, and each conductive terminal can connect more wires, enabling the conductive terminal to meet the needs of more application scenarios.

[0008] Based on this, according to one embodiment of the present invention, a conductive terminal for connecting wires is provided, comprising: a first connecting portion; a first arm extending from a first end of the first connecting portion along a first direction; and a second arm including a first portion extending from a second end of the first connecting portion along a second direction at an angle to the first direction, wherein the first portion includes: a wire contact portion disposed on the first portion along the second direction, and configured to pierce the insulation layer of a wire placed in the terminal frame when the conductive terminal is inserted into a terminal frame in a direction opposite to the first direction, so as to form an electrical connection with the wire.

[0009] In one embodiment, the second arm further includes a second portion extending in a third direction from one end of the first portion away from the second end of the first portion away from the first connection portion.

[0010] In one embodiment, the third direction is parallel to the first direction.

[0011] In one embodiment, the wire contact portion includes one or more sharp, raised edges formed on the first portion along the second direction.

[0012] In one embodiment, the wire contact portion further includes one or more strip-shaped through holes formed on the first portion along the second direction, wherein the edge forming the strip-shaped through hole includes the sharp protruding edge.

[0013] In one embodiment, the raised edge is formed using a flanging process.

[0014] In one embodiment, the conductive terminal further includes a support portion located between the first arm and the second arm, and configured to abut against the first arm and the second arm when the conductive terminal is inserted into the terminal frame, so as to prevent deformation of the second arm.

[0015] In one embodiment, the conductive terminal further includes a terminal contact portion extending outward from one end of the first arm away from the first end of the first connection portion, and configured to be electrically connected to an external component.

[0016] In one embodiment, the conductive terminal further includes a terminal contact portion extending outward from one end of the second arm away from the second end of the first connection portion, and configured to be electrically connected to an external component.

[0017] In one embodiment, the conductive terminal further includes a locking portion extending outward from both sides of the first arm or the second arm and configured to lock the conductive terminal within the terminal frame when the conductive terminal is inserted into the terminal frame.

[0018] In one embodiment, the conductive terminal further includes a positioning through-hole formed on the first arm and configured to position the conductive terminal when it is being processed.

[0019] In one embodiment, a conductive terminal for connecting a wire includes: a first connecting portion; a first arm extending from a first end of the first connecting portion along a first direction; and a second arm including a first portion extending from a second end of the first connecting portion along a second direction at an angle to the first direction, wherein the first portion has at least one strip-shaped through hole formed along the second direction, wherein the edge forming the strip-shaped through hole includes a sharp protruding edge that can be used to pierce the wire to form an electrical connection with the wire.

[0020] In one embodiment, the raised edge is formed using a flanging process.

[0021] In one embodiment, the second arm further includes a second portion extending from one end of the first portion away from the second end of the first portion along a third direction, wherein the third direction is parallel to the first direction. Attached Figure Description

[0022] Other features and advantages of the present invention will be better understood from the following preferred embodiments described in detail with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a perspective view of a conductive terminal as an existing technology.

[0024] Figure 2 for Figure 1 The diagram shows the conductive terminals arranged within the terminal frame.

[0025] Figure 3 This is a perspective view of a conductive terminal according to an embodiment of the present invention.

[0026] Figure 4 This is a front view of a conductive terminal according to an embodiment of the present invention.

[0027] Figure 5 This is a side view of a conductive terminal according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of multiple conductive terminals inserted into a terminal frame according to an embodiment of the present invention.

[0029] Figure 7 This is a detailed view of the protrusion structure of a conductive terminal according to an embodiment of the present invention.

[0030] Figure 8 This is a side view of a conductive terminal according to another embodiment of the present invention.

[0031] Figure 9 This is a side view of a conductive terminal according to another embodiment of the present invention. Detailed Implementation

[0032] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using the invention, and are not intended to limit the scope of the invention. The expressions used when describing the various components, such as upper end, lower end, up, down, left, right, etc., are not absolute but relative. These expressions are appropriate when the various components are arranged as shown in the figures, but they change accordingly when the positions of the various components in the figures change.

[0033] Figure 3 A perspective view of a conductive terminal according to an embodiment of the present invention is shown. Figure 3 , Figure 4 and Figure 5This conductive terminal 30 for connecting wires includes a first connecting portion 301, a first arm 302, and a second arm 303. The first arm 302 is formed from a first end 3011 of the first connecting portion 301 along a first direction. The second arm 303 includes a first portion 3031 extending from a second end 3012 of the first connecting portion 301 along a second direction at an angle to the first direction. The first portion 3031 includes a wire contact portion 3032 disposed on the first portion 3031 along the second direction and configured to pierce the insulation layer of a wire placed within the terminal frame when the conductive terminal 30 is inserted into a terminal frame in a direction opposite to the first direction, thereby forming an electrical connection with the wire.

[0034] In this embodiment, the second arm 303 further includes a second portion 3033 extending from the second end 3012 of the first portion 3031, away from the first connecting portion 301, along a third third direction, wherein the third third direction is parallel to the first direction. The conductor contact portion 3032 further includes a plurality of sharp raised edges 3034 formed on the first portion 3031 along a second direction. The conductive terminal according to an embodiment of the present invention can be made of copper, such as brass, copper-nickel-silicon, phosphor bronze, etc. The conductor according to an embodiment of the present invention is a magnet wire, also known as a winding wire, which is an insulated wire used to manufacture coils or windings in electrical products. Magnet wires are generally classified as enameled wire, wrapped wire, enameled-wrapped wire, and inorganic insulated wire, etc.

[0035] Figure 6 A schematic diagram is shown after a plurality of conductive terminals 30 are inserted into a terminal frame 40 according to an embodiment of the present invention. Figure 6 In this embodiment, multiple wires 50 are arranged sequentially within the crimping grooves of the terminal frame 40. The arrangement of the multiple wires 30 is simultaneous along both the width and height directions, avoiding a significant increase in the terminal spacing CC' caused by arranging them only along the width direction. For the conductive terminal crimping the wires, the direction in which each raised edge extends is necessarily perpendicular to the direction of each wire arrangement. This allows the raised edge to pierce the wire along its cross-sectional direction after being subjected to force. For example, in this example, each raised edge 3034 of the conductive terminal 30 extends along the second direction, while the direction of each corresponding wire 50 is perpendicular to the second direction. In other words, the direction of the raised edge substantially restricts the direction of the wire arrangement. In this embodiment, the raised edge 3034 of the wire contact portion 3032 extends along the second direction, and the arrangement of the corresponding wires 50 does not occupy too much space in the width direction. This is one of the reasons for the smaller terminal spacing of the conductive terminal in this invention. Using the conductive terminal of this embodiment, the minimum terminal spacing is 1.5 mm, and at least four wires can be connected.

[0036] During the crimping process of the conductive terminal 30 onto the wires 50, the conductive terminal 30 is aligned with the terminal frame groove 40 and pressed down, and the conductive terminal 30 is pressed vertically downward into the terminal frame groove 40. Because the conductive terminal 30 is subjected to vertical downward pressure, according to the force decomposition, a pressure perpendicular to the contact surface between the wire contact portion 3032 and the multiple wires 50 is generated at the wire contact portion 3032. Figure 6 In the specific case shown, the pressure is a force F1 directed downwards and to the left. The wire contact portion 3032, acted upon by F1, presses against the multiple wires 50. Since the wire contact portion 3032 includes multiple raised edges 3034 extending in the second direction, these raised edges 3034 pierce the insulation layer of the wires 50 and penetrate the wire core, achieving electrical interconnection between the conductive terminal 30 and the wires 50. After this process is completed, the conductive terminal 30 remains within the terminal frame 40, and one end of the conductive terminal 30 serves as a tap for electrical connection to external components.

[0037] In the actual manufacturing of micro motors, thin wires are often used. Figure 6 In this process, when a conductive terminal is pressed into a terminal frame made of materials such as plastic, the thin wire is slightly embedded into the inner wall of the terminal frame in a downward-left direction. The terminal frame acts as a buffer, reducing the risk of the thin wire breaking under pressure from the wire contact area.

[0038] In representing existing technology Figure 1 In this invention, each raised edge 1033 is perpendicular to the second direction, and the raised edge 1033 is processed by scraping in the prior art. However, the raised edge 3034 extending along the second direction in this invention cannot be processed by scraping. In the process of processing the conductive terminal, it is necessary to first process the structural features of the raised edge on the plate-shaped metal part, and then bend the plate-shaped metal part to form the first arm and the second arm in sequence. Since the plate-shaped metal part cannot provide two ends as the starting end and the ending end of the raised edge in this invention before bending, it is impossible to perform scraping processing on the wire contact part. Therefore, this invention uses perforation and flanging processes to process the raised edge. The flanging process refers to using a mold to form a straight wall or flange with a certain angle along the curved edge on the flat or curved part of the workpiece, that is, to form the raised edge in this invention.

[0039] Figure 7 This is a detailed view of the raised edge of a conductive terminal according to an embodiment of the present invention. Figure 7In this embodiment, the conductor contact portion 3032 further includes one or more strip-shaped through holes 3035 formed on the first portion 3031 along a second direction. The edges forming these strip-shaped through holes 3035 include sharp raised edges 3034. During the manufacturing of the conductive terminal 30, a plurality of strip-shaped through holes 3035 are first punched in a plate-shaped metal part using a perforation process, and then the original edges of the strip-shaped through holes 3035 are flanged to form sharp raised edges 3034.

[0040] In this embodiment, during the insertion of the conductive terminal 30 into the terminal frame 40, the conductive terminal 30 is subjected to pressure F2 from the inner wall of the terminal frame 40, perpendicular to the contact surface between the wire contact portion 3032 and the inner wall of the terminal frame. Figure 6 As shown, the direction of F2 is upward and to the right. The force of F2 causes the second arm 303 to deform inward toward the first arm 302 during the insertion of the conductive terminal 30 into the terminal frame 40. To solve the above problem, in this embodiment, the conductive terminal 30 further includes a support portion 304, which is located between the first arm 302 and the second arm 303, formed on the first arm 302 and extending toward the second arm 303. When the conductive terminal 30 is inserted into the terminal frame 40, the support portion 304 abuts against the space between the first arm 302 and the second arm 303 to prevent deformation of the second arm 303. In this embodiment, as... Figure 5 As shown, the support 304 abuts against the second portion 3033 of the first arm 302 and the second arm 303. In one example, as... Figure 8 As shown, the support portion 304 abuts against the first portion 3031 of the first arm 302 and the second arm 303. The support portion, in addition to... Figure 5 and Figure 8 Besides the plate-like structure shown, it can also be a block-like structure or a dumbbell-shaped structure. In another example, such as Figure 9 As shown, the block-shaped support 304 abuts between the first arm 302 and the second arm 303.

[0041] In embodiments of the present invention, such as Figure 3 As shown, the conductive terminal also includes a terminal contact portion 305, which extends outward from one end of the first arm 302 away from the first end 3011 of the first connection portion 301, and is configured to be electrically connected to an external component. In another example, the terminal contact portion 305 extends outward from one end of the second arm 303 away from the second end 3012 of the first connection portion 301. Figure 3 The terminal contact 305 shown is a folding rod structure. The terminal contact can also be a plate structure, a folding plate structure, a tile structure, etc. The structure of the terminal contact can be adjusted according to the specific application of the external components.

[0042] In embodiments of the present invention, such as Figure 3As shown, the conductive terminal 30 also includes a locking portion 306, which extends outward from both sides of the first arm 302 or the second arm 303 and is configured to lock the conductive terminal 30 within the terminal frame 40 when it is inserted into the terminal frame 40. Specifically, four grooves for locking the terminal 30 are provided on the inner sidewall of the terminal frame 40. When the conductive terminal 30 is inserted into the terminal frame 40 to crimp the wire 50, the four locking portions 306 of the conductive terminal 30 are received in the four grooves and locked therein, so that the conductive terminal 30 can only be inserted and not removed.

[0043] In an embodiment of the present invention, the conductive terminal 30 further includes a positioning through hole formed on the first arm 302 and configured to position the conductive terminal 30 during processing. As mentioned above, during the processing of the conductive terminal, a plate-shaped metal part needs to be processed first. After completing the processing of the specific features of the plate-shaped metal part, the plate-shaped metal part is bent sequentially to form the first arm 302 and the second arm 303 sequentially. Therefore, when processing the plate-shaped metal part, the positioning circular through hole on the first arm 302 needs to be used as a reference.

[0044] While this invention has been described with reference to specific examples, which are intended to be illustrative only and not to limit the invention, it will be apparent to those skilled in the art that changes, additions, or deletions can be made to the disclosed embodiments without departing from the spirit and scope of the invention.

Claims

1. A conductive terminal for connecting wires, comprising: First connecting part; A first arm is formed extending from a first end of the first connecting portion along a first direction; The second arm includes a first portion extending from a second end of the first connecting portion along a second direction at an angle to the first direction, wherein the first portion includes: A wire contact portion is disposed on the first portion along the second direction and is configured to pierce the insulation layer of a wire placed within the terminal frame when the conductive terminal is inserted into a terminal frame in a direction opposite to the first direction, thereby forming an electrical connection with the wire, wherein the wire contact portion includes one or more sharp protruding edges formed on the first portion along the second direction, the second direction being perpendicular to the extension direction of the wire.

2. The conductive terminal according to claim 1, wherein, The second arm also includes a second portion extending in a third direction from one end of the first portion away from the second end of the first connection portion.

3. The conductive terminal according to claim 2, wherein, The third direction is parallel to the first direction.

4. The conductive terminal according to claim 1, wherein the wire contact portion further includes one or more strip-shaped through holes formed on the first portion along the second direction, wherein, The edge forming the strip-shaped through-hole includes the sharp, raised edge.

5. The conductive terminal according to claim 4, wherein the raised edge is formed by using a flanging process.

6. The conductive terminal according to claim 1 further includes a support portion located between the first arm and the second arm, and configured to abut against the first arm and the second arm when the conductive terminal is inserted into the terminal frame to prevent deformation of the second arm.

7. The conductive terminal according to claim 1 further includes a terminal contact portion extending outward from one end of the first arm away from the first end of the first connection portion, and configured to be electrically connected to an external component.

8. The conductive terminal according to claim 1 further includes a terminal contact portion extending outward from one end of the second arm away from the second end of the first connecting portion, and configured to be electrically connected to an external component.

9. The conductive terminal according to claim 1 further includes a locking portion extending outward from both sides of the first arm or the second arm, and configured to lock the conductive terminal within the terminal frame when the conductive terminal is inserted into the terminal frame.

10. The conductive terminal of claim 1 further includes a positioning through-hole formed on the first arm and configured to position the conductive terminal when it is processed.

11. A conductive terminal for connecting wires, comprising: First connecting part; A first arm is formed extending from a first end of the first connecting portion along a first direction; The second arm includes a first portion extending from the second end of the first connection portion along a second direction at an angle to the first direction, wherein the first portion has at least one strip-shaped through hole formed along the second direction, wherein the edge forming the strip-shaped through hole includes a sharp protruding edge extending along the second direction for piercing a wire to form an electrical connection with the wire, wherein the second direction is perpendicular to the extension direction of the wire.

12. The conductive terminal of claim 11, wherein the raised edge is formed by using a flanging process.

13. The conductive terminal according to claim 11, wherein, The second arm also includes a second portion extending from one end of the first portion away from the second end of the first connection portion along a third direction, wherein the third direction is parallel to the first direction.

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