Power connection terminal connection structure

Abstract

The utility model discloses a power connection terminal connection structure comprising a strip-shaped metal sheet, one end of the metal sheet is provided with a needle-shaped part, and the other end of the metal sheet is provided with a first wrapping sheet used for holding the surface of a wire. A second wrapping sheet used for holding a core wire of the electric wire is formed on the metal sheet on one side of the first wrapping sheet, and the first wrapping sheet and the second wrapping sheet can be bent and then shaped so as to respectively clamp the skin of the electric wire and the core wire of the electric wire. The metal sheet, the needle-shaped part, the first wrapping sheet and the second wrapping sheet of the power connection terminal connection structure are of an integrated structure, the second wrapping sheet is used for clamping the core wire of the electric wire to achieve electrical connection, the first wrapping sheet is used for clamping the skin of the electric wire to prevent the metal sheet from being separated from the electric wire, a fixed ring terminal and a metal sleeve in the prior art are omitted, and the cost is reduced. The structure is simplified, the assembly process is more convenient, and the production cost is lower.

Description

Technical Field

[0001] This utility model relates to a connection structure for electrical terminals. Background Technology

[0002] Some electrical appliances have pin-shaped terminals, such as the emitting needle of a negative ion generator. These terminals need to connect to the core wire of the electrical wire for conductivity, and also need to be fixed to the wire's sheath to prevent the connection between the terminal and the core wire from being broken. See also Figure 1 In this conventional design, the end of the transmitting pin furthest from its tip has a mounting hole. A fixed ring terminal is then placed at the end of the wire. One end of the fixed ring terminal has a mounting ring corresponding to the mounting hole. A metal sleeve is passed through the mounting ring and the mounting hole and then riveted to secure the transmitting pin and the fixed ring terminal. The other end of the fixed ring terminal has an arc-shaped metal piece, which, when bent, can wrap around and clamp the wire's sheath. This type of terminal connection structure is complex, with numerous components, many production and assembly steps, and high processing costs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one of the objectives of the present invention is to provide a power terminal connection structure that is simple in construction, easy to assemble, and has low production cost.

[0004] According to an embodiment of the present invention, a terminal connection structure includes: a long strip of metal sheet, one end of which is provided with a needle-like portion, and the other end of which is formed with a first wrapping piece for holding the outer sheath of an electric wire, and a second wrapping piece formed on one side of the first wrapping piece for holding the core wire of the electric wire, wherein both the first wrapping piece and the second wrapping piece can be bent and shaped to clamp the outer sheath of the electric wire and the core wire of the electric wire respectively.

[0005] According to an embodiment of the present utility model, a terminal connection structure has at least the following beneficial effects:

[0006] The metal sheet, needle-shaped part, first wrapping sheet and second wrapping sheet of the above-mentioned electrical terminal connection structure are integrated into one structure. The second wrapping sheet clamps the core wire of the wire to achieve electrical connection, and the first wrapping sheet clamps the outer sheath of the wire to prevent the metal sheet and the wire from separating. This eliminates the need for the fixed ring terminal and metal sleeve of the traditional technology, simplifies the structure, and makes the assembly process more convenient and the production cost lower.

[0007] In some embodiments of this utility model, the metal sheet, the needle-shaped portion, the first wrapping sheet, and the second wrapping sheet are an integral sheet metal structure.

[0008] In some embodiments of this utility model, the first wrapping sheet is bent in the same direction along both sides of the width direction of the metal sheet to form a first mounting groove with an opening direction perpendicular to the metal sheet, and the second wrapping sheet is bent in the same direction along both sides of the width direction of the metal sheet to form a second mounting groove with an opening direction perpendicular to the metal sheet. The opening direction of the second mounting groove is consistent with the opening direction of the first mounting groove.

[0009] In some embodiments of this utility model, the distance between the two side walls of the first wrapping sheet is greater than the distance between the two side walls of the second wrapping sheet, and the height dimension of the side edge of the first wrapping sheet perpendicular to the metal sheets is greater than the height dimension of the side edge of the second wrapping sheet perpendicular to the metal sheets.

[0010] In some embodiments of this utility model, the inner sidewall of the second mounting groove is provided with a protruding rib for tightening the core wire of the wire.

[0011] In some embodiments of this utility model, the rib portion is a rib extending along the width direction of the second wrapping sheet, and at least two ribs are spaced apart along the length direction of the metal sheet.

[0012] In some embodiments of this utility model, an identification strip is provided between the second wrapping sheet and the needle-shaped portion, close to the second wrapping sheet, and an insulating heat shrink tubing is sleeved on the outside of the metal sheet between the identification strip and the second wrapping sheet.

[0013] In some embodiments of this utility model, the needle-shaped part is an acute-angled triangular piece with the same wall thickness as the metal sheet, and the two sides of the connection between the acute-angled triangular piece and the metal sheet are provided with inwardly recessed pre-folded grooves.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of one embodiment of a traditional electrical terminal connection structure.

[0017] Figure 2 This is a schematic diagram of one embodiment of the electrical terminal connection structure of this utility model;

[0018] Figure 3 for Figure 1A partially enlarged schematic diagram of the embodiment without wires connected.

[0019] Figure label:

[0020] 10. Launching needle; 11. Mounting hole; 20. Fixed ring terminal; 21. Mounting ring; 30. Metal sleeve; 100. Needle-shaped part; 110. First wrapping piece; 120. Second wrapping piece; 130. First mounting groove; 140. Second mounting groove; 150. Raised strip; 160. Identification strip; 180. Pre-folded groove; 190. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] See Figure 2 and Figure 3The present invention provides a terminal connection structure, comprising: a long strip metal sheet 100, one end of which is provided with a needle-like portion 110, and the other end of which is formed with a first wrapping piece 120 for holding the outer sheath of an electric wire, and a second wrapping piece 130 formed on one side of the first wrapping piece 120 for holding the core wire of the electric wire, wherein both the first wrapping piece 120 and the second wrapping piece 130 can be bent and shaped to clamp the outer sheath of the electric wire and the core wire of the electric wire respectively.

[0026] The metal sheet 100, needle-shaped part 110, first wrapping sheet 120 and second wrapping sheet 130 of the above-mentioned electrical terminal connection structure are integrated into one structure. The second wrapping sheet 130 clamps the core wire of the wire to achieve electrical connection, and the first wrapping sheet 120 clamps the outer sheath of the wire to prevent the metal sheet 100 from separating from the wire. This eliminates the need for the fixed ring terminal and metal sleeve of the traditional technology, simplifies the structure, and makes the assembly process more convenient and the production cost lower.

[0027] In some embodiments of this utility model, to further simplify the production and processing flow, the metal sheet 100, the needle-like portion 110, the first wrapping sheet 120, and the second wrapping sheet 130 are integral sheet metal structures. Of course, in other embodiments, the metal sheet 100, the needle-like portion 110, the first wrapping sheet 120, and the second wrapping sheet 130 may also be integrally forged or integrally rolled metal structures.

[0028] See Figure 2 and Figure 3 In some embodiments of this utility model, the first wrapping piece 120 is bent in the same direction along both sides of the metal sheet 100 in the width direction to form a first mounting groove 140 with an opening direction perpendicular to the metal sheet 100. The second wrapping piece 130 is bent in the same direction along both sides of the metal sheet 100 in the width direction to form a second mounting groove 150 with an opening direction perpendicular to the metal sheet 100. The opening direction of the second mounting groove 150 is consistent with the opening direction of the first mounting groove 140. It can be understood that part of the wire sheath is located within the first mounting groove 140, and the end of the wire core is located within the second mounting groove 150. Only by bending the first wrapping piece 120 and the second wrapping piece 130 at a small angle can the wire sheath and the wire core be clamped together, which is beneficial for manual processing.

[0029] See Figure 3In some embodiments of this utility model, the distance between the two side walls of the first wrapping piece 120 is greater than the distance between the two side walls of the second wrapping piece 130, and the height dimension of the side edge of the first wrapping piece 120 perpendicular to the metal sheet 100 is greater than the height dimension of the side edge of the second wrapping piece 130 perpendicular to the metal sheet 100. That is, the width dimension of the first wrapping piece 120 in the unfolded state is greater than the width dimension of the second wrapping piece 130 in the unfolded state. Since the diameter dimension of the wire sheath is greater than the diameter dimension of the wire core, the first wrapping piece 120 forms a ring with a larger diameter dimension when it hugs the wire sheath, and the second wrapping piece 130 forms a ring with a smaller diameter dimension when it hugs the wire core.

[0030] In some embodiments of this utility model, in order to enable the second wrapping piece 130 to have a greater clamping force and a more reliable clamping effect when clamping the core wire of the wire, the inner sidewall of the second mounting groove 150 is provided with a protruding rib for pressing the core wire of the wire, which can effectively prevent the core wire of the wire from coming out of the second mounting groove 150.

[0031] See Figure 2 and Figure 3 In some embodiments of this utility model, in order to simplify the manufacturing method of the rib portion and to constrain multiple positions of the wire core in the circumferential direction, the rib portion is a raised strip 160 extending along the width direction of the second wrapping sheet 130, and at least two raised strips 160 are spaced apart along the length direction of the metal sheet 100. Specifically, the raised strip 160 can be formed by stamping on the back side of the metal sheet 100 located on the raised strip 160, which is relatively convenient for production and processing.

[0032] In some embodiments of this utility model, an identification strip 180 is provided between the second wrapping sheet 130 and the needle-shaped portion 110, near the second wrapping sheet 130. An insulating heat-shrink tubing is sleeved on the outside of the metal sheet 100, located between the identification strip 180 and the second wrapping sheet 130. It should be noted that in some application scenarios, it is necessary to sleeve an insulating heat-shrink tubing on the outside of the junction between the second wrapping sheet 130 and the core wire of the wire, thereby achieving electrical insulation. The identification strip 180 provides an indication of proper assembly for manual operation, preventing improper installation.

[0033] See Figure 2In some embodiments of this utility model, the needle-shaped portion 110 is an acute-angled triangular piece with the same wall thickness as the metal sheet 100. The two sides of the connection between the acute-angled triangular piece and the metal sheet 100 are provided with inwardly recessed pre-folding grooves 190. It should be noted that, taking a negative ion generator as an example, the needle-shaped portion 110 needs to be positioned in the gas flow path. The needle-shaped portion 110 is supplied with a high-voltage current to ionize the nearby air, thereby accumulating a large number of negative ions, which are then blown into the surrounding air by a fan. The pre-folding grooves 190 help to bend the acute-angled triangular piece relative to the metal sheet 100 at a certain angle so that the tip of the acute-angled triangular piece is positioned in the gas flow path.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A terminal connection structure, characterized in that, include: A long strip of metal (100) has a needle-like part (110) at one end and a first wrapping piece (120) for holding the outer sheath of the wire at the other end. A second wrapping piece (130) for holding the core wire of the wire is formed on one side of the first wrapping piece (120). Both the first wrapping piece (120) and the second wrapping piece (130) can be bent and shaped to clamp the outer sheath of the wire and the core wire of the wire, respectively.

2. The electrical terminal connection structure according to claim 1, characterized in that: The metal sheet (100), the needle-shaped portion (110), the first wrapping sheet (120), and the second wrapping sheet (130) are an integral sheet metal structure.

3. The electrical terminal connection structure according to claim 2, characterized in that: The first wrapping piece (120) is bent in the same direction along both sides of the width direction of the metal sheet (100) to form a first mounting groove (140) with the opening direction perpendicular to the metal sheet (100). The second wrapping piece (130) is bent in the same direction along both sides of the width direction of the metal sheet (100) to form a second mounting groove (150) with the opening direction perpendicular to the metal sheet (100). The opening direction of the second mounting groove (150) is consistent with the opening direction of the first mounting groove (140).

4. The electrical terminal connection structure according to claim 3, characterized in that: The distance between the two side walls of the first wrapping sheet (120) is greater than the distance between the two side walls of the second wrapping sheet (130), and the height dimension of the side edge of the first wrapping sheet (120) perpendicular to the metal sheet (100) is greater than the height dimension of the side edge of the second wrapping sheet (130) perpendicular to the metal sheet (100).

5. The electrical terminal connection structure according to claim 3, characterized in that: The inner wall of the second mounting groove (150) is provided with a protruding rib for tightening the core wire of the wire.

6. The electrical terminal connection structure according to claim 5, characterized in that: The rib portion is a rib (160) extending along the width direction of the second wrapping sheet (130), and at least two ribs (160) are spaced apart along the length direction of the metal sheet (100).

7. The electrical terminal connection structure according to claim 1, characterized in that: An identification band (180) is provided between the second wrapping sheet (130) and the needle-shaped portion (110) near the second wrapping sheet (130), and an insulating heat shrink tube is provided on the outside of the metal sheet (100) between the identification band (180) and the second wrapping sheet (130).

8. The electrical terminal connection structure according to claim 1, characterized in that: The needle-shaped portion (110) is an acute-angled triangular piece with the same wall thickness as the metal sheet (100), and the two sides of the connection between the acute-angled triangular piece and the metal sheet (100) are provided with inwardly recessed pre-folded grooves (190).

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