阅读说明：本技术 连接端子及端子连接体
(Connection terminal and terminal connector
) 是由 金知圣
广濑满 于 2019-02-27 设计创作，主要内容包括：提供一种连接端子及端子连接体,能够将与导体之间的电阻维持得小,并且能够不易从导体脱离,且能够减小体型。连接端子(3)具备与第1导体(2)连接的连接部(31)、圆弧状安装部(32)、一对延设部(33)以及加强弹簧(5)。圆弧状安装部(32)从连接部(31)延设,并且以使弹性变形后的复原力作用的方式安装于第2导体(4)的圆筒状外周面(401)中的超过半周的范围。一对延设部(33)从圆弧状安装部(32)的周向(C)的两端部延设,向与圆弧状安装部(32)弯曲的一侧相反的一侧弯曲。加强弹簧(5)安装于圆弧状安装部(32)的外周,使弹性变形后的复原力作用于圆弧状安装部(32)的外周面。(Provided are a connection terminal and a terminal connection body, which can maintain the resistance between the connection terminal and a conductor to be small, can not be separated from the conductor easily, and can reduce the size. The connection terminal (3) is provided with a connection section (31) connected to the 1 st conductor (2), an arc-shaped mounting section (32), a pair of extension sections (33), and a reinforcing spring (5). The arc-shaped mounting portion (32) extends from the connecting portion (31) and is mounted on the cylindrical outer peripheral surface (401) of the 2 nd conductor (4) over a half-cycle range so that a restoring force after elastic deformation acts thereon. The pair of extending portions (33) extend from both ends of the arc-shaped mounting portion (32) in the circumferential direction (C) and are bent to the side opposite to the side where the arc-shaped mounting portion (32) is bent. The reinforcing spring (5) is attached to the outer periphery of the arc-shaped attachment portion (32), and causes the restoring force after elastic deformation to act on the outer peripheral surface of the arc-shaped attachment portion (32).)
1. A connecting terminal for connecting a 1 st conductor and a 2 nd conductor, comprising:
a connection portion connected to the 1 st conductor;
an arc-shaped mounting portion extending from the connecting portion and mounted to the cylindrical outer peripheral surface of the 2 nd conductor over a range exceeding a half-circumference by applying a restoring force after elastic deformation;
a pair of extending portions extending from both circumferential ends of the arc-shaped mounting portion and bent to a side opposite to a side where the arc-shaped mounting portion is bent; and
and a reinforcing spring which is mounted on the outer periphery of the arc-shaped mounting part and causes the restoring force after elastic deformation to act on the outer peripheral surface of the arc-shaped mounting part.
2. A connecting terminal according to claim 1, wherein the reinforcing spring is formed of a metal material having a larger specific resistance and a larger spring constant than a metal material forming the arcuate mounting portion.
3. A connecting terminal according to claim 1 or 2, wherein a retaining member is disposed between the pair of extensions, the retaining member preventing an interval between the pair of extensions from expanding, thereby preventing the arc-shaped mounting portion from being detached from the cylindrical outer peripheral surface of the 2 nd conductor.
4. A terminal connecting body comprising a 1 st conductor and a 2 nd conductor, wherein the 1 st conductor has a connecting terminal, and the 2 nd conductor is connected to the connecting terminal,
the connection terminal has:
a connection portion connected to the 1 st conductor;
an arc-shaped mounting portion extending from the connecting portion and mounted to the cylindrical outer peripheral surface of the 2 nd conductor over a range exceeding a half-circumference by applying a restoring force after elastic deformation; and
a pair of extending portions extending from both circumferential ends of the arc-shaped mounting portion and bent to a side opposite to a side where the arc-shaped mounting portion is bent,
a diameter-expanded portion that prevents the arc-shaped mounting portion from being pulled out in the axial direction from the cylindrical outer peripheral surface is formed at a distal end portion of the 2 nd conductor.
5. The terminal connecting body according to claim 4, wherein a reinforcing spring is attached to an outer periphery of the arc-shaped attaching portion, and the reinforcing spring causes a restoring force after elastic deformation to act on an outer peripheral surface of the arc-shaped attaching portion.
Technical Field
The present invention relates to a connection terminal for connecting a 1 st conductor and a 2 nd conductor and a terminal connecting body for connecting the 1 st conductor and the 2 nd conductor via the connection terminal.
Background
For example, when various control devices that perform electronic control are connected to a control device, in consideration of ease of assembly and the like, a connection terminal may be used to connect an electric wire drawn from the control device to an electric wire drawn from the control device. When connecting wires to each other by a connection terminal, there are cases where bolt connection is performed, cases where a crimp terminal is used, cases where a round pin terminal is used, and the like. Further, the connection terminal used for a connector or the like can maintain conductivity by utilizing spring characteristics.
When the connection terminals are bolted, terminal portions provided at the ends of the wires are fastened by bolts. In the case of using a crimp terminal as the connection terminal, terminal portions provided at the ends of the wires are crimped and connected to each other. In the case of using a round pin terminal as the connection terminal, a male pin provided at an end of one electric wire is press-fitted into a female pin provided at an end of the other electric wire to connect the two pins.
As a connection terminal used in a connector or the like and utilizing spring characteristics, for example, a connection terminal disclosed in patent document 1 is known. In the connection terminal of patent document 1, the following is performed: an electric wire crimping part is provided on one end side, and a contact spring part which elastically contacts a counterpart member is provided on a tip end surface on the other end side.
Disclosure of Invention
Problems to be solved by the invention
In the case of using a connection terminal that is bolted, the terminal portions can be firmly brought into surface contact with each other by fastening the bolt. Therefore, the resistance in the connection terminal can be reduced as much as possible. However, the overall size of the connection terminal including the bolt is increased, and it is necessary to secure a space for arranging a tool for fastening the bolt.
In the case where the crimp terminal is used as the connection terminal, a portion of the terminal portions is crimped, and a point at which the terminal portions contact each other is reduced. Therefore, the resistance of the connection terminal becomes large. In addition, when a round pin terminal is used as the connection terminal, the male pin and the female pin partially come into contact with each other at a plurality of portions, and the resistance of the connection terminal increases. In addition, in the case of using the connection terminal utilizing the spring characteristics shown in patent document 1, the area of the contact spring portion in elastic contact with the counterpart member is small, and the resistance of the connection terminal increases. Therefore, in these cases, the connection terminal may generate heat, and the temperature thereof may increase.
The present invention has been made in view of the above problems, and provides a connection terminal and a terminal connecting body, which are provided with: the resistance between the conductor and the conductor is kept small, the conductor is not easy to separate, and the size of the body can be reduced.
Means for solving the problems
An aspect of the present invention is a connection terminal for connecting a 1 st conductor and a 2 nd conductor, including:
a connection portion connected to the 1 st conductor;
an arc-shaped mounting portion extending from the connecting portion and mounted to the cylindrical outer peripheral surface of the 2 nd conductor over a range exceeding a half-circumference by applying a restoring force after elastic deformation;
A pair of extending portions extending from both circumferential ends of the arc-shaped mounting portion and bent to a side opposite to a side where the arc-shaped mounting portion is bent; and
and a reinforcing spring which is mounted on the outer periphery of the arc-shaped mounting part and causes the restoring force after elastic deformation to act on the outer peripheral surface of the arc-shaped mounting part.
Another aspect of the present invention is a terminal connecting body including a 1 st conductor and a 2 nd conductor, the 1 st conductor having a connecting terminal, the 2 nd conductor being connected to the connecting terminal,
the connection terminal has:
a connection portion connected to the 1 st conductor;
an arc-shaped mounting portion extending from the connecting portion and mounted to the cylindrical outer peripheral surface of the 2 nd conductor over a range exceeding a half-circumference by applying a restoring force after elastic deformation; and
a pair of extending portions extending from both circumferential ends of the arc-shaped mounting portion and bent to a side opposite to a side where the arc-shaped mounting portion is bent,
a diameter-expanded portion that prevents the arc-shaped mounting portion from being pulled out in the axial direction from the cylindrical outer peripheral surface is formed at a distal end portion of the 2 nd conductor.
Effects of the invention
The connecting terminal of the first aspect includes a connecting portion, an arc-shaped mounting portion, a pair of extending portions, and a reinforcing spring. The arc-shaped mounting portion is mounted on the cylindrical outer peripheral surface of the 2 nd conductor over a range exceeding a half-circumference so that a restoring force after the elastic deformation acts thereon. The arc-shaped mounting portion can be in surface contact with the cylindrical outer peripheral surface of the 2 nd conductor. Thus, according to the connection terminal, the resistance with the 2 nd conductor can be kept small, and the amount of heat generated in the connection terminal can be suppressed to be small.
Further, by attaching the reinforcing spring to the outer periphery of the arc-shaped attachment portion, the spring strength of the arc-shaped attachment portion can be increased, and the restoring force acting on the 2 nd conductor from the arc-shaped attachment portion can be increased. This makes it difficult for the arc-shaped mounting portion to separate from the 2 nd conductor.
Further, the arc-shaped mounting portion can be brought into close contact with the cylindrical outer peripheral surface of the 2 nd conductor, and the pair of extending portions can be formed in a shape that slightly protrudes from the arc-shaped mounting portion. This can reduce the size of the connection terminal.
In addition, when the arc-shaped mounting portion is elastically deformed so as to be expanded in diameter when the arc-shaped mounting portion is mounted on the cylindrical outer peripheral surface of the 2 nd conductor, the pair of extending portions can be used to guide the 2 nd conductor to the arc-shaped mounting portion. The pair of extending portions may be used as a hooking portion for hooking a member or the like for preventing the arc-shaped mounting portion from coming off the cylindrical outer peripheral surface of the 2 nd conductor.
Therefore, according to the connection terminal of the one aspect, the resistance between the connection terminal and the conductor can be kept small, the connection terminal is less likely to be detached from the conductor, and the size of the connection terminal can be reduced.
The terminal connecting body of the other aspect is a terminal connecting body in which the 1 st conductor and the 2 nd conductor are connected by a connecting terminal, and the connecting terminal has a structure shown as the connecting terminal of the one aspect and including a connecting portion, an arc-shaped mounting portion, and a pair of extending portions. Further, according to the terminal connecting body, the arc-shaped mounting portion can be prevented from being pulled out in the axial direction from the cylindrical outer peripheral surface of the 2 nd conductor by the diameter-enlarged portion formed at the distal end portion of the 2 nd conductor.
Therefore, according to the terminal connecting body of the other aspect, the resistance between the connecting terminal and the conductor can be kept small, the size of the connecting terminal can be reduced, and the connecting terminal can be prevented from being pulled out in the axial direction from the conductor.
Drawings
Fig. 1 is a perspective view showing a connection terminal and a terminal connecting body according to embodiment 1.
Fig. 2 is an explanatory view showing the connection terminal and the terminal connecting body according to embodiment 1 in a cross section along the axial direction of the 1 st conductor and the 2 nd conductor.
Fig. 3 is an explanatory view showing the connection terminal and the terminal connection body according to embodiment 1 in a cross section perpendicular to the axial direction of the 1 st conductor and the 2 nd conductor.
Fig. 4 is an explanatory diagram illustrating a state in which the exposed conductor portion of the 2 nd conductor is molded in embodiment 1.
Fig. 5 is a perspective view showing a connection terminal and a terminal connecting body according to embodiment 2.
Fig. 6 is a perspective view showing the side opposite to the side shown in fig. 5 of the connection terminal and the terminal connecting body according to embodiment 2.
Fig. 7 is an explanatory view showing a connection terminal and a terminal connection body according to embodiment 2 in a cross section perpendicular to the axial direction of the 1 st conductor and the 2 nd conductor.
Detailed Description
Preferred embodiments of the connection terminal and the terminal connecting body described above will be described with reference to the drawings.
< embodiment 1>
As shown in fig. 1 to 3, the connection terminal 3 of the present embodiment is used to connect the 1 st conductor 2 and the 2 nd conductor 4. The connection terminal 3 includes a connection portion 31, an arc-shaped attachment portion 32, a pair of extension portions 33, and a reinforcing spring 5. The connection portion 31 is a portion connected to the 1 st conductor 2. The arc-shaped mounting portion 32 extends from the connecting portion 31, and is mounted to a portion of the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 over a half-circumference range by applying the restoring force F after the elastic deformation. The pair of extending portions 33 extend from both end portions 321 of the arc-shaped mounting portion 32 in the circumferential direction C and are bent to the side opposite to the side where the arc-shaped mounting portion 32 is bent. The reinforcing spring 5 is attached to the outer periphery of the arc-shaped attachment portion 32, and causes the restoring force F after elastic deformation to act on the outer peripheral surface 323 of the arc-shaped attachment portion 32.
The terminal connecting body 1 of the present embodiment includes: a 1 st conductor 2 having a connection terminal 3; and a 2 nd conductor 4 connected to the connection terminal 3. An enlarged diameter portion 44 is formed at the distal end portion of the 2 nd conductor 4, and the enlarged diameter portion 44 prevents the arc-shaped mounting portion 32 from being pulled out in the axial direction L from the cylindrical outer peripheral surface 401.
The connection terminal 3 and the terminal connecting body 1 of the present embodiment will be described in detail below.
As shown in fig. 1 and 2, the connection terminal 3 of the present embodiment is used to connect the 1 st conductor 2 of the 1 st electric wire 20 drawn from a control device and the 2 nd conductor 4 of the 2 nd electric wire 40 drawn from the control device when a control device for performing electronic control is connected to the control device. Further, the 1 st wire 20 having the 1 st conductor 2 may be drawn from the control device, and the 2 nd wire 40 having the 2 nd conductor 4 may be drawn from the control device.
The control device includes an electric motor, an air cylinder, a solenoid, and the like as an actuator, and various sensors and the like. In this case, the control device may be an Electronic Control Unit (ECU) of the vehicle.
(conductor 2 and connecting part 31 No. 1)
As shown in fig. 1 and 2, the 1 st conductor 2 of the present embodiment is formed as a conductor portion in the 1 st wire 20. The 1 st electric wire 20 is a so-called coated wire, and includes a conductor portion and a coating portion 22 covering the conductor portion. The 1 st electric wire 20 is a stranded wire in which a plurality of wires are bundled and stranded. The 1 st electric wire 20 is formed with an exposed conductor portion 21 as a conductor portion in which a coating 22 at an end of the 1 st electric wire 20 is peeled off and exposed. The exposed conductor part 21 of the present embodiment is formed into a flat plate shape by press working using a forming die or the like.
The 1 st electric wire 20 may be a single wire in addition to a twisted wire. In this case, the 1 st conductor 2 is formed by a solid conductor portion exposed at the end of the 1 st wire 20. The 1 st conductor 2 may be a solid conductor such as a bus bar, in addition to the conductor portion of the electric wire. The solid conductor may be coated with, for example, enamel resin (enamel resin).
(connection part 31 of connection terminal 3)
As shown in fig. 1, the connection portion 31 of the connection terminal 3 of the present embodiment is formed in a plate shape. The connection portion 31 faces the exposed conductor portion 21 of the 1 st electric wire 20, and is joined to the exposed conductor portion 21 by welding, soldering, or the like. The connecting portion 31 may have any shape as long as it is a shape for connecting the 1 st conductor 2 and the arc-shaped mounting portion 32. The exposed conductor portion 21 can be formed in various shapes along the shape of the connection portion 31. The connection portion 31 and the exposed conductor portion 21 can also be joined to each other by pressure bonding, crimping, or the like.
(No. 2 conductor 4)
As shown in fig. 1 and 2, the 2 nd conductor 4 of the present embodiment is formed as a conductor portion in the 2 nd wire 40. The 2 nd electric wire 40 is a so-called coated wire, and includes a conductor portion and a coating portion 42 covering the conductor portion. The 2 nd electric wire 40 is a stranded wire in which a plurality of wires are stranded in a bundle. The 2 nd electric wire 40 is formed with an exposed conductor portion 41 as a conductor portion in which a coating portion 42 at an end portion of the 2 nd electric wire 40 is peeled off and exposed.
As shown in fig. 4, the exposed conductor portion 41 is formed into a cylindrical shape (columnar shape) by press working or the like using the forming die 7. The cylindrical outer peripheral surface 401 of the 2 nd conductor 4 is formed as a cylindrically shaped outer peripheral surface. Here, "cylindrical" is synonymous with cylindrical and means an axial shape having a circular cross section. The exposed conductor portion 41 can be formed by thermoforming. The thermoforming means: the plurality of wires 411 constituting the conductor portion are heated to be molded in a state where the conductor portion is softened. The exposed conductor portion 41 can be formed into a cylindrical shape by applying another conductor material 412 to the conductor portion.
(diameter-enlarged part 44 of conductor 4 of the 2 nd order)
As shown in fig. 2, when the exposed conductor portion 41 as the 2 nd conductor 4 is formed, the distal end portion of the exposed conductor portion 41 is formed to have a larger diameter than a portion closer to the proximal end side than the distal end portion. Then, an enlarged diameter portion 44 is formed at the distal end portion of the exposed conductor portion 41 which is the 2 nd conductor 4. The enlarged diameter portion 44 has a larger outer diameter than the general portion 43 exposing the conductor portion 41, and is formed as a portion enlarged in diameter from the general portion 43 in a step-like or tapered shape. The enlarged diameter portion 44 is formed to have a thickness in the radial direction R to which the arc-shaped mounting portion 32 can be hooked.
(arc-shaped mounting part 32 of connection terminal 3)
As shown in fig. 3, the arc-shaped mounting portion 32 is formed in a range of an angle θ exceeding 180 ° and 300 ° or less in the circumferential direction C of the 2 nd conductor 4 around the center axis O thereof. Here, the angle θ formed by the arc-shaped mounting portion 32 is set to the angle θ of the circumferential direction C at which the inner circumferential surface 322 of the arc-shaped mounting portion 32 contacts the cylindrical outer circumferential surface 401 of the 2 nd conductor 4. In this figure, a boundary position between the pair of extending portions 33 in the inner peripheral surface 322 of the arc-shaped mounting portion 32 is denoted by reference numeral K.
Preferably, the arc-shaped mounting portion 32 is formed at an angle θ of 210 ° or more so as to be less likely to come off from the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 in the radial direction R. In consideration of inserting the 2 nd conductor 4 in the radial direction R from the open portion 330 between the pair of extended portions 33, the arc-shaped attaching portion 32 is preferably formed at an angle θ of 270 ° or less.
In manufacturing the connection terminal 3, the arc-shaped attachment portion 32 before being attached to the 2 nd conductor 4 is formed to be smaller than the outer diameter of the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 in order to impart a spring force as a restoring force F to the 2 nd conductor 4 when being attached to the 2 nd conductor 4. When the arc-shaped mounting portion 32 is elastically deformed and mounted on the cylindrical outer peripheral surface 401 of the 2 nd conductor 4, the restoring force F generated after the arc-shaped mounting portion 32 is elastically deformed can be applied from the arc-shaped mounting portion 32 to the cylindrical outer peripheral surface 401.
In view of high conductivity, the connection terminal 3 including the connection portion 31, the arc-shaped attachment portion 32, and the pair of extension portions 33 is made of a copper material made of copper or a copper alloy.
(A pair of extension parts 33)
As shown in fig. 3, the pair of extensions 33 are formed by bending an end 321 of the arc-shaped attachment portion 32 in the circumferential direction C into an arc shape. The pair of extending portions 33 are bent in a direction opposite to the direction in which the arc-shaped mounting portion 32 is bent into an arc shape. Surfaces of the pair of extending portions 33 on the sides facing each other are formed into curved shapes for smooth attachment to the 2 nd conductor 4.
(reinforcing spring 5)
As shown in fig. 1 to 3, the reinforcing spring 5 is made of a metal material having a higher specific resistance and a higher spring constant than the metal material constituting the arc-shaped mounting portion 32. Further, the restoring force F of the reinforcing spring 5 acts on the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 integrally with the restoring force F of the arc-shaped mounting portion 32.
In view of high conductivity, the connection terminal 3 including the connection portion 31, the arc-shaped attachment portion 32, and the pair of extension portions 33 is made of a copper material made of copper or a copper alloy. Copper materials have good electrical conductivity, but have a low young's modulus (elastic modulus) and are difficult to increase in spring constant. Therefore, in this embodiment, the spring constant, which is a weak point of the copper material, is increased by using a metal material having a larger spring constant than the copper material.
The reinforcing spring 5 is a member that compensates for the spring constant of the circular arc-shaped mounting portion 32 made of a copper material, and therefore, it is not necessary to consider the conductivity. The metal material constituting the reinforcing spring 5 may be a high carbon steel material, an alloy steel material, a stainless steel material, or the like, in addition to the spring steel material (SUP material). Further, a plating film may be formed on the surface of the connection terminal 3 in consideration of durability.
The reinforcing spring 5 is formed thinner than the arc-shaped mounting portion 32. With this configuration, even when the reinforcing spring 5 is provided, the outer diameter of the connection terminal 3 is not increased as much as possible.
As shown in fig. 1 and 2, a plurality of projections (embossings) 51 are formed in the reinforcing spring 5 in the vicinity of the center portion in the circumferential direction C along the circumferential direction C. The plurality of projections 51 are formed to improve the strength of the reinforcing spring 5.
(installation of connection terminal 3)
First, the reinforcing spring 5 is attached to the outer periphery of the arc-shaped attachment portion 32. Then, when the arc-shaped mounting portion 32 is mounted on the cylindrical outer peripheral surface 401 of the 2 nd conductor 4, the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 is brought into contact with the pair of extending portions 33. Then, the 2 nd conductor 4 is press-fitted toward the inside of the arc-shaped mounting portion 32. At this time, the gap between the pair of extending portions 33 is widened by the cylindrical outer peripheral surface 401 of the 2 nd conductor 4, and the arc-shaped mounting portion 32 and the reinforcing spring 5 are elastically deformed so as to increase the radius of curvature thereof.
When the 2 nd conductor 4 enters the arc-shaped mounting portion 32, a part of the elastic deformation of the arc-shaped mounting portion 32 and the reinforcing spring 5 is restored, the interval between the pair of extending portions 33 is narrowed, and the arc-shaped mounting portion 32 is brought into contact with (brought into close contact with) the cylindrical outer peripheral surface 401 of the 2 nd conductor 4. At this time, the elastic deformation of the arc-shaped attachment portion 32 and the reinforcing spring 5 is not completely restored, and the restoring force F after the elastic deformation of the arc-shaped attachment portion 32 and the reinforcing spring 5 acts on the cylindrical outer peripheral surface 401 of the 2 nd conductor 4. This prevents the arc-shaped mounting portion 32 from coming off the 2 nd conductor 4 in the radial direction R.
(Effect)
The connection terminal 3 of the present embodiment includes a connection portion 31, an arc-shaped attachment portion 32, a pair of extension portions 33, and a reinforcing spring 5. The arc-shaped mounting portion 32 is mounted to the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 over a range exceeding a half-cycle so that the restoring force F after the elastic deformation acts thereon. The arc-shaped mounting portion 32 can be in surface contact with the cylindrical outer peripheral surface 401 of the 2 nd conductor 4. Thus, according to the connection terminal 3, the resistance with the 2 nd conductor 4 can be kept small, and the amount of heat generated in the connection terminal 3 can be suppressed to be small.
Further, by attaching the reinforcing spring 5 to the outer periphery of the arc-shaped attachment portion 32, the spring strength of the arc-shaped attachment portion 32 can be increased, and the restoring force F acting on the 2 nd conductor 4 from the arc-shaped attachment portion 32 can be increased. This makes it difficult for the arc-shaped mounting portion 32 to come off from the 2 nd conductor 4.
Further, by using the reinforcing spring 5, the conductivity and spring strength of the arc-shaped mounting portion 32 can be easily designed. That is, by using the reinforcing spring 5, the thickness of the arc-shaped mounting portion 32 may not be increased to increase the spring strength. Therefore, the thickness of the arc-shaped mounting portion 32 may be set to be equal to or less than the resistance value required to ensure conductivity, and the amount of copper material used to form the arc-shaped mounting portion 32 can be reduced.
The arc-shaped mounting portion 32 can be brought into close contact with the cylindrical outer peripheral surface 401 of the 2 nd conductor 4, and the pair of extending portions 33 can be formed in a shape that slightly protrudes from the arc-shaped mounting portion 32. This can reduce the size of the connection terminal 3.
In addition, when the arc-shaped mounting portion 32 is elastically deformed so as to be expanded in diameter when the arc-shaped mounting portion 32 is mounted on the cylindrical outer peripheral surface 401 of the 2 nd conductor 4, the pair of extending portions 33 can be used to guide the 2 nd conductor 4 to the arc-shaped mounting portion 32. The pair of extensions 33 can also be used as hooking portions for hooking the retaining member 6 or the like shown in embodiment 2 described later so that the arc-shaped mounting portion 32 does not come off the cylindrical outer peripheral surface 401 of the 2 nd conductor 4.
Therefore, according to the connection terminal 3 of the present embodiment, the resistance with the 2 nd conductor 4 can be kept small, and the body shape can be reduced while the terminal is less likely to be separated from the 2 nd conductor 4.
The terminal assembly 1 of the present embodiment is a terminal assembly in which the 1 st conductor 2 and the 2 nd conductor 4 are connected by the connection terminal 3, and the connection terminal 3 has a structure having a connection portion 31, an arc-shaped attachment portion 32, and a pair of extension portions 33. Further, according to the terminal connecting body 1, the arc-shaped attaching portion 32 can be prevented from being pulled out in the axial direction L from the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 by the diameter-enlarged portion 44 formed at the distal end portion of the 2 nd conductor 4.
Therefore, according to the terminal connector 1 of the present embodiment, the resistance between the connection terminal 3 and the 2 nd conductor 4 can be kept small, the size of the connection terminal 3 can be reduced, and the connection terminal 3 can be prevented from being pulled out in the axial direction L from the 2 nd conductor 4.
< embodiment 2>
The connection terminal 3 and the terminal connecting body 1 according to the present embodiment are obtained by further improving the structure shown in embodiment 1. In the connection terminal 3 of the present embodiment, the arc-shaped mounting portion 32 is more reliably prevented from coming off the 2 nd conductor 4.
As shown in fig. 5 to 7, the retaining member 6 is disposed between the pair of extensions 33, and the retaining member 6 prevents the arc-shaped mounting portion 32 from coming off the cylindrical outer peripheral surface 401 of the 2 nd conductor 4 by preventing the gap between the pair of extensions 33 from being widened. The retaining member 6 of the present embodiment is formed by a clip that is mounted between the pair of extensions 33. The clip is formed in a quadrilateral ring shape that holds the pair of extensions 33 from the outer peripheral side and prevents the gap between the pair of extensions 33 from expanding.
As shown in fig. 5 and 6, the pair of extending portions 33 of the present embodiment are formed in a plurality of divided portions in the axial direction L of the arc-shaped mounting portion 32. Between the extending portions 33 arranged in the axial direction L, a recessed portion 331 is formed in which the length of the arc-shaped mounting portion 32 in the circumferential direction C is shortened. The recessed portion 331 is used as a space in which the retaining member 6 is disposed (locked). The retaining members 6 are respectively mounted on two pairs of extending portions 33 arranged in the axial direction L.
In this embodiment, the retaining member 6 is mounted on the pair of extending portions 33, so that the arc-shaped mounting portion 32 can be more reliably prevented from coming off the 2 nd conductor 4. This can more reliably prevent the connection terminal 3 from coming off the 2 nd conductor 4.
Other structures, operational effects, and the like of the connection terminal 3 and the terminal connecting body 1 according to the present embodiment are the same as those of embodiment 1. In this embodiment, the same reference numerals as those in embodiment 1 denote the same components as those in embodiment 1.
The reinforcing spring 5 of the present embodiment is provided only on the outer peripheral surface 323 of the arc-shaped mounting portion 32. Alternatively, the reinforcing spring 5 may be provided continuously from the outer peripheral surface 323 of the arcuate attachment portion 32 and the inner peripheral surfaces of the pair of extensions 33.
In this embodiment, both the reinforcing spring 5 and the retaining member 6 are provided in the arc-shaped mounting portion 32 of the connection terminal 3. On the other hand, only one of the reinforcing spring 5 and the retaining member 6 may be provided in the arc-shaped mounting portion 32.
The present invention is not limited to the embodiments, and various embodiments can be further configured without departing from the scope of the invention. The present invention includes various modifications, modifications within an equivalent range, and the like.
