JP7640272B2 - Connection terminal and connection terminal assembly structure - Google Patents

Description

This invention relates, for example, to connection terminals to be stacked and to an assembly structure for the connection terminals.

As a terminal for electrically connecting an electric device to an electric wire, there is a connection terminal that is composed of a connection part with an insertion hole for inserting a fixing bolt installed on the electric device, and an electric wire connection part for connecting the electric wire. This connection terminal can electrically connect the electric wire to the electric device by inserting the fixing bolt into the insertion hole and tightening the nut.

In recent years, due to an increase in electrical devices and electronic components associated with electrical control, multiple connection terminals are sometimes inserted into a fixing bolt to tighten a nut. Therefore, Patent Document 1 discloses a connection terminal that allows multiple connection terminals to be inserted into a fixing bolt at once.

Specifically, the connection terminal disclosed in Patent Document 1 has two adjacent protruding pieces that protrude outward from the outer periphery of the connection part, one of which has a press-fit piece that protrudes in the insertion direction of the fixing bolt, and the other has a locking hole that aligns with the insertion direction. Then, by pressing the press-fit piece of the connection terminal into the locking hole of the other connection terminal to be stacked, the connection parts can be stacked without misalignment of the insertion holes, and they can be inserted into the fixing bolt all at once.

However, when the connection terminals disclosed in Patent Document 1 are stacked together, the positions of the insertion holes of the stacked connection terminals do not match. In other words, when connection terminals with different shapes and sizes of connection parts are stacked together, there is a problem in that the insertion holes are misaligned.

JP 2018-14299 A

The object of this invention is to provide a connection terminal and an assembly structure for the connection terminal that can prevent misalignment of the insertion holes when connection terminals with different shapes and sizes of connection parts are stacked.

The present invention relates to a connection terminal having a connection portion having an insertion hole for inserting a fixing bolt therethrough, and an electric wire connection portion for connecting an electric wire, wherein a peripheral portion of the insertion hole of the connection portion is provided with a plurality of peripheral convex portions which protrude along an insertion direction and are inserted along a peripheral portion of an insertion hole of a connection portion of another connection terminal stacked with the connection portion, and a holding portion which holds an outer edge of the connection portion of the other connection terminal is provided in a width direction perpendicular to the insertion direction of an outer edge of the connection portion of the connection terminal, the plurality of peripheral convex portions are provided at predetermined intervals along the peripheral portion of the insertion hole of the connection portion of the connection terminal, and the other connection terminals are assembled from a p-type terminal and a q-type terminal, each having a connection portion having an insertion hole for inserting the fixing bolt therethrough, and an electric wire connection portion for connecting an electric wire different from the electric wire, from the width direction. and stacked in the insertion direction, the respective insertion holes in the p-type terminal and the q-type terminal form the insertion holes of the other connecting terminal inserted in the insertion direction when the respective connection parts of the p-type terminal and the q-type terminal are stacked, the length in the insertion direction of the peripheral convex portion and the holding portion is the same as the thickness in the insertion direction of the connection part of the other connecting terminal configured by stacking the connection parts of the p-type terminal and the q-type terminal in the insertion direction, and the multiple peripheral convex portions inserted along the periphery of the insertion holes of the other connecting terminal and the holding portion which holds the outer edges of the connection parts of the stacked p-type terminal and q-type terminal clamp the connection part of the other connecting terminal across the insertion direction.

The present invention also provides:
A connection terminal assembly structure in which a connection terminal having a connection part having an insertion hole for inserting a fixing bolt and an electric wire connection part for connecting an electric wire and another connection terminal are stacked in an insertion direction of inserting the fixing bolt, the connection terminal being provided with a plurality of peripheral convex parts that protrude along the insertion direction on a peripheral part of the insertion hole of the connection part of the other connection terminal stacked on the connection part, the peripheral convex parts being inserted along a peripheral part of the insertion hole of the connection part of the other connection terminal, and a holding part that holds an outer edge of the connection part of the other connection terminal is provided in a width direction perpendicular to the insertion direction of an outer edge of the connection part of the connection terminal, the plurality of peripheral convex parts being provided at predetermined intervals along the peripheral part of the insertion hole of the connection part of the connection terminal, and the other connection terminals each having a connection part having an insertion hole for inserting the fixing bolt and an electric wire connection part for connecting an electric wire different from the electric wire. the insertion direction, and the peripheral convex portion and the holding portion hold the outer edges of the connection portions of the p-type terminal and the q-type terminal that are stacked in the insertion direction, the insertion holes of the p-type terminal and the q-type terminal form the insertion holes of the other connection terminal that are inserted in the insertion direction when the connection portions of the p-type terminal and the q-type terminal are stacked in the insertion direction, the length in the insertion direction of the peripheral convex portion and the holding portion is the same as the thickness in the insertion direction of the connection portion of the other connection terminal that is constructed by stacking the connection portions of the p-type terminal and the q- type terminal in the insertion direction, and the peripheral convex portions inserted along the peripheral portions of the insertion holes of the other connection terminal and the holding portion that holds the outer edges of the connection portions of the stacked p-type terminal and q-type terminal hold the connection portion of the other connection terminal across the insertion direction.

The peripheral convex portion may be configured as a continuous ring along the peripheral portion of the insertion hole, or may be configured as protruding pieces spaced apart at predetermined intervals along the peripheral portion.
The above-mentioned other connection terminals may have connection portions having the same or different shapes.

The other connection terminal may be one connection terminal or multiple connection terminals. Furthermore, when the other connection terminal is multiple connection terminals, it also includes a connection terminal in which two connection terminals are slid from an orthogonal direction perpendicular to the insertion direction and overlapped for use.

According to this invention, even when connection terminals having connection portions with different shapes and sizes are stacked, it is possible to prevent the insertion holes from being misaligned.
In detail, since the peripheral convex portion provided on the peripheral portion of the insertion hole can be inserted along the peripheral portion of the insertion hole of another connection terminal, the positions of the insertion holes in the stacked connection terminals can be aligned and the connection terminals can be prevented from moving relative to each other in the intersecting direction intersecting with the insertion direction. Therefore, even when connection terminals having different shapes or sizes of connection parts are stacked, the positional deviation of the insertion holes can be prevented, so that the stacked connection terminals can be attached to the fixing bolt all at once, and the work efficiency of the attachment process to the fixing bolt can be improved.

The peripheral convex portions are provided at a predetermined interval along the periphery of the insertion hole. As a result, the peripheral convex portions are easily bent toward the inside of the insertion hole by being spaced apart at a predetermined interval between adjacent peripheral convex portions. This allows the peripheral convex portions to be easily inserted into the insertion holes of other connection terminals, improving the work efficiency of the process of stacking the connection terminals.

Furthermore, a holding portion is provided on the outer edge of the connection portion for holding the outer edge of the connection portion of the other connection terminal. This allows the other connection terminal to be clamped between the peripheral convex portion and the holding portion, reliably preventing misalignment between the insertion hole of the other connection terminal and the insertion hole of the connection terminal, and preventing the connection terminal from rotating relative to the other connection terminal. This prevents the orientation of the wires connected to each connection terminal from changing when transporting stacked connection terminals, for example, and improves work efficiency after transport.

In addition, because the peripheral convex portion is inserted along the peripheral portion of the insertion hole of the other connection terminal, it is possible to prevent the stacked connection terminals from coming loose. For example, there is no need to tape the connection terminal and the electric wires connected to the other connection terminal, which improves work efficiency when transporting the connection terminal or when inserting the connection terminal into a fixing bolt.

As an aspect of the present invention, the peripheral convex portion may be formed in a ring shape along a peripheral portion of the insertion hole.
According to this invention, the ring-shaped peripheral convex portion can be brought into contact with the entire periphery of the peripheral portion of another connection terminal, so that displacement of the stacked connection terminals can be reliably prevented.

In a further aspect of the present invention, the peripheral convex portion may be tapered.
The tapered shape includes a shape in which the plate thickness of the peripheral convex portion is tapered, a shape in which a plurality of peripheral convex portions are provided at a predetermined interval along the peripheral portion of the insertion hole, a shape in which the plate thickness is tapered in a direction along the peripheral portion of the insertion hole, or both.

This invention makes it possible to reduce the rigidity of the tip portion of the peripheral convex portion, thereby reducing the resistance when inserting the peripheral convex portion into the insertion hole of another connection terminal. This makes it possible to easily insert the peripheral convex portion into the insertion hole of the stacked connection terminal. In addition, since the base end portion of the peripheral convex portion has a certain rigidity due to its thick plate thickness, it is possible to prevent misalignment between the insertion holes of the other connection terminal and the stacked connection terminal.

In addition, if the peripheral convex portion is tapered in the plate thickness direction, it is possible to guide the peripheral convex portion into the insertion hole of the stacked connection terminal. This makes it easier to insert the peripheral convex portion into the insertion hole of the stacked connection terminal, improving the work efficiency of the assembly work.

In another aspect of the present invention, a connecting portion is provided between the connection portion of the connection terminal and the wire connection portion of the connection terminal , and the connecting portion may be an offset connection portion that positions the wire connection portion of the connection terminal at a predetermined interval in a direction opposite to the protruding direction of the peripheral convex portion relative to the connection portion of the connection terminal .

This invention makes it possible to prevent the wires and wire connection parts connected to the wire connection parts of the stacked connection terminals from interfering with each other, and to reduce the load on the wire connection parts and connection parts. Therefore, it is possible to prevent the connection parts from bending, ensure that the connection parts are in surface contact with each other to ensure reliable conductivity, and prevent the peripheral convex parts from coming loose from the other connection terminals.

In another embodiment of the present invention, the peripheral convex portion may be formed with a protruding amount equal to or greater than the thickness of the connection portion, and the inserted portion of the peripheral convex portion inserted into the insertion hole of another connection terminal may be crimped and fixed.

This invention allows the connection part of the connection terminal to be sandwiched between the connection part of the other connection terminal and the insertion part of the peripheral convex part from the insertion direction, so that the other connection terminal can be fixed by the connection terminal, and misalignment between the insertion hole of the other connection terminal and the insertion hole of the connection terminal can be more reliably prevented.

This invention provides a connection terminal and an assembly structure for the connection terminal that can prevent misalignment of the insertion holes when connection terminals with different shapes and sizes of connection parts are stacked.

FIG. 4 is a schematic perspective view of an assembly structure in which a connection terminal is assembled to another connection terminal. FIG. 4 is a schematic exploded perspective view in which a connection terminal and another connection terminal are removed. FIG. 11 is a schematic exploded perspective view of another connection terminal. FIG. FIG. 4 is an explanatory diagram of an assembly structure in which a connection terminal is assembled to another connection terminal. FIG. 11 is an explanatory diagram of another embodiment of a connection terminal. FIG. 11 is an explanatory diagram of another embodiment of a connection terminal. FIG. 11 is an explanatory diagram of another embodiment of a connection terminal.

(Embodiment 1)
An embodiment of the present invention will now be described with reference to FIGS.
Fig. 1 shows a schematic perspective view of an assembly structure 1 in which a connection terminal 10 and an assembly terminal 20 are assembled, Fig. 2 shows a schematic exploded perspective view in which the connection terminal 10 and the assembly terminal 20 are removed, and Fig. 3 shows a schematic exploded perspective view in which the assembly terminal 20 is disassembled into a p-type connection terminal 30 and a q-type connection terminal 40. Fig. 4 shows an explanatory diagram of the connection terminal 10, and Fig. 5 shows an explanatory diagram of the assembly structure 1 in which the connection terminal 10 and the assembly terminal 20 are assembled.

4 and 5 will now be described in detail.
Fig. 4(a) shows a plan view of the connection terminal 10, Fig. 4(b) shows a side view of Fig. 4(a), and Fig. 4(c) shows a cross-sectional view taken along line A-A in Fig. 4(a). Fig. 5(a) shows a plan view of the assembly structure 1, Fig. 5(b) shows a side view of Fig. 5(a), and Fig. 5(c) shows a cross-sectional view taken along line B-B in Fig. 5(a).

In the following description, the longitudinal direction of the connection terminal 10 is the X direction, the width direction of the connection terminal 10 is the Y direction, and the insertion direction of the insertion hole through which the fixing bolt is inserted into the assembly structure 1 is the Z direction. Note that the X direction, Y direction, and Z direction are all perpendicular to each other.

As shown in Figures 1 and 2, the assembly structure 1 is configured by stacking a connection terminal 10 along the Z direction on an assembly terminal 20 configured by assembling a p-type connection terminal 30 and a q-type connection terminal 40 from the Y direction.
Prior to a specific description of the connection terminal 10, the assembly terminal 20 will be described with reference to FIGS.

As shown in FIGS. 2 and 3, the assembled terminal 20 is configured by assembling a p-type connecting terminal 30 and a q-type connecting terminal 40 from the Y direction.
3, the p-type connection terminal 30 is a terminal having a substantially p-type shape in a plan view, and is composed of a connection part 32 having an insertion hole 31 through which a fixing bolt (not shown) is inserted, and an electric wire connection part 33 for connecting the electric wire 200. The electric wire 200 is a coated electric wire in which a plurality of core wires 210 are coated with an insulating coating part 220.

A pair of receiving portions 321, 322 that protrude in the Z direction from the surface of the connection portion 32 by the plate thickness of the connection portion 32 are integrally formed on both sides of one end side and the other end side of the insertion hole 31 in the width direction (Y direction) of the p-type connection terminal 30. The distance between one end side and the other end side of the insertion hole 31 in the longitudinal direction (X direction) is slightly wider than the distance between the receiving portions 321, 322.

The electric wire connection part 33 extends in the X direction from one end side of the width direction (Y direction) of the connection part 32, and is composed of a wire barrel 331 that crimps and holds the multiple core wires 210, and an insulation barrel 332 that crimps and holds the insulating coating part 220.

As shown in FIG. 3, the q-type connection terminal 40 is a terminal that is approximately q-shaped in plan view, and is configured to have a shape that is approximately symmetrical to the p-type connection terminal 30 in plan view. In more detail, the q-type connection terminal 40 is configured to have a connection part 42 having an insertion hole 41 through which a fixing bolt (not shown) is inserted, and an electric wire connection part 43 that connects the electric wire 300. The electric wire 300 is a coated electric wire in which multiple core wires 310 are coated with an insulating coating part 320.

A pair of engagement parts 421, 422 are integrally formed on both sides of the insertion hole 41 in the width direction (Y direction) of the q-type connection terminal 40, and are stepped down from the surface of the connection part 42 by the plate thickness of the connection part 42. The distance between the one end side and the other end side of the insertion hole 41 in the longitudinal direction (X direction) is slightly wider than the distance between the engagement parts 421, 422.

The electric wire connection part 43 extends in the X direction from the other end side of the connection part 42 in the width direction (Y direction), and is composed of a wire barrel 431 that crimps and holds the multiple core wires 310, and an insulation barrel 432 that crimps and holds the insulating coating part 320.

The p-type connection terminal 30 and the q-type connection terminal 40 thus configured are engaged by sliding the engagement portions 421, 422 of the connection portion 42 into the receiving portions 321, 322 of the connection portion 32 from the Y direction. This allows the connection portions 32 and 42 of the p-type connection terminal 30 and the q-type connection terminal 40 to be assembled, forming a two-layered assembled terminal 20 (see FIG. 2).

In the assembled terminal 20 assembled in this manner, the connecting portion 42 and the receiving portions 321, 322 located on the front side are flat (flush). The insertion holes 31 and 41 of the connecting portions 32 and 42 are aligned in the insertion direction (Z direction) of the fixing bolt.
The electric wire 200 connected to the electric wire connection portion 33 and the electric wire 300 connected to the electric wire connection portion 43 are arranged in parallel along the X direction.

The connection terminal 10, which is assembled to the assembly terminal 20 in the Z direction, is composed of an annular connection portion 12 having an insertion hole 11 for inserting a fixing bolt (not shown), an electric wire connection portion 13 for connecting an electric wire 100 having multiple core wires 110 covered with an insulating coating portion 120, and a connecting portion 14 for connecting the connection portion 12 and the electric wire connection portion 13, as shown in Figures 1, 2, and 4.

As shown in FIGS. 2 and 4, a ring-shaped peripheral convex portion 15 is provided on the peripheral portion of the insertion hole 11 of the connection portion 12 so as to protrude in the insertion direction of the insertion hole 11 (Z direction).
4(a) to 4(c), the peripheral convex portion 15 is formed into a ring shape by burring so as to match the inner periphery of the insertion hole 11. The inner diameter of the peripheral convex portion 15 matches the inner diameter of the insertion hole 11, and the outer diameter of the peripheral convex portion 15 matches the spacing between the receiving portions 321, 322 of the p-type connecting terminal 30 and the engagement portions 421, 422 of the q-type connecting terminal 40. The height of the peripheral convex portion 15 (the amount of protrusion in the Z direction) is configured to be the same as the thickness of the assembled terminal 20 in the Z direction at one end side in the X direction. In other words, the height is twice the plate thickness of the connecting portion 32 and the connecting portion 42.

As shown in FIG. 4(c), the peripheral convex portion 15 thus configured has a tapered portion 151 formed around the entire outer periphery of the tip side, which is inclined radially inward as it approaches the tip side. In other words, the tapered portion 151 is formed so that the tip side of the peripheral convex portion 15 has a smaller diameter than the connection portion 12 side of the tapered portion 151, i.e., the base side.

As shown in FIGS. 2 and 4, the connection portion 12 of the connection terminal 10 is provided on its outer periphery with two holding portions 16, 16 that protrude in the Y direction.
4(a), the holding portion 16 is composed of an extension piece 161 extending outward in the width direction (Y direction) of the connection terminal 10 from the outer periphery of the connection portion 12 corresponding to the center of the insertion hole 11, and a holding piece 162 extending from the outer end of the extension piece 161 toward the assembly terminal 20 in parallel with the insertion direction (Z direction) of the insertion hole 11. The extension amount of the holding piece 162 in the holding portion 16 is twice the plate thickness of the connection portion 32 and the connection portion 42.

As shown in Figures 2 and 4, the electric wire connection section 13 is composed of a wire barrel 17 that crimps and holds multiple core wires 110, and an insulation barrel 18 that crimps and holds the insulating coating section 120.

The wire barrel 17 has a pair of barrel portions 171, 172, and these barrel portions 171, 172 crimp and hold the bundle of core wires 110 so as to embrace it from the outside.
The insulation barrel 18 has a pair of barrel portions 181, 182, which are used to crimp and hold the insulating coating portion 120 so as to embrace it from the outside.

2 and 4(b), the connecting portion 14 extends obliquely in the opposite direction to the protruding direction of the peripheral convex portion 15 with respect to the connection portion 12. Therefore, the electric wire connection portion 13 is arranged at a predetermined interval in the opposite direction to the protruding direction of the peripheral convex portion 15 with respect to the connection portion 12. More specifically, the connecting portion 14 extends in the opposite direction to the protruding direction of the peripheral convex portion 15 with respect to the connection portion 12 so that at least the length in the Z direction is longer than the length of the outer diameter of the electric wire 200 and the electric wire 300 connected to the p-type connection terminal 30 and the q-type connection terminal 40.

The connection terminal 10 configured in this manner can be assembled from the Z direction to the assembly terminal 20 in which the p-type connection terminal 30 and the q-type connection terminal 40 are assembled, as shown in Figures 1 and 5.

In more detail, the connection terminal 10 is positioned so that the insertion hole 11 corresponds to the insertion hole 31 and the insertion hole 41, and the peripheral convex portion 15 can be inserted into the insertion hole 31 and the insertion hole 41 by moving the connection terminal 10 parallel to the Z direction relative to the assembly terminal 20.

Here, the tapered portion 151 is formed on the tip side of the peripheral convex portion 15, so that when the peripheral convex portion 15 is inserted into the insertion hole 31 and the insertion hole 41 in the p-type connection terminal 30 and the q-type connection terminal 40, the tapered portion 151 acts as a guide portion, making it easier to insert.

As a result, the peripheral convex portion 15 is inserted along the peripheral portion of the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 consisting of the p-type connection terminal 30 and the q-type connection terminal 40, which are the other stacked connection terminals. Note that, when the connection terminal 10 and the assembly terminal 20 are assembled, the tip position of the peripheral convex portion 15 coincides with the position of the back surface of the connection portions 32, 42 in the assembly terminal 20, more specifically, the position of the back surface of the engagement portions 421, 422.

In addition, by assembling the connection terminal 10 to the assembly terminal 20, the peripheral convex portion 15 and the holding portions 16, 16 clamp the outer edges of the p-type connection terminal 30 and the q-type connection terminal 40, in this embodiment the outer edges of the receiving portions 321, 322 and the engagement portions 421, 422, to hold the assembly terminal 20.

Furthermore, the linking portion 14 extends obliquely from the connection portion 12 located at one end of the connection terminal 10 in the longitudinal direction (X direction) toward the electric wire connection portion 13 located at the other end of the longitudinal direction (X direction) in the opposite direction to the protruding direction of the peripheral convex portion 15. This allows the electric wire 100 on the connection terminal 10 side and the electric wires 200 and 300 connected to the p-type connection terminal 30 and q-type connection terminal 40 to be separated from each other.

In this way, the connecting portion 14 is provided between the connecting portion 12 and the electric wire connecting portion 13, and the connecting portion 14 can arrange the electric wire connecting portion 13 at a predetermined interval in the opposite direction to the protruding direction of the peripheral convex portion 15 with respect to the connecting portion 12. This can prevent the electric wires 100, 200, and 300 connected to the stacked connecting terminals 10 and assembled terminals 20 (p-type connecting terminals 30 and q-type connecting terminals 40), and the electric wire connecting portion 13, the electric wire connecting portion 33, and the electric wire connecting portion 43 from interfering with each other. In addition, the load applied to the electric wire connecting portion 13, the electric wire connecting portion 33, and the electric wire connecting portion 43, or the connecting portion 12, the connecting portion 32, and the connecting portion 42 can be reduced.

This prevents the connection portion 12 from bending, ensures surface contact between the connection portions 12, 32, and 42, and ensures reliable conductivity, and prevents the peripheral protrusion 15 from coming loose from the other connection terminals, the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40).

Thus, the connection terminal 10 of the first embodiment shown in Figs. 1 to 5 is a connection terminal 10 having a connection portion 12 with an insertion hole 11 through which a fixing bolt is inserted, and an electric wire connection portion 13 for connecting an electric wire 100, and a peripheral convex portion 15 is provided on the periphery of the insertion hole 11, which protrudes along the insertion direction (Z direction) of the insertion hole 11 and is inserted along the periphery of the insertion hole 31 and insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other stacked connection terminal.

The connection terminal assembly structure 1 of the first embodiment shown in Figs. 1 to 5 has a connection portion 12 having an insertion hole 11 for inserting a fixing bolt and an electric wire connection portion 13 for connecting an electric wire 100. The peripheral convex portion 15 protruding along the insertion direction (Z direction) of the insertion hole 11 is provided on the peripheral portion of the insertion hole 11 of the connection terminal 10. The peripheral convex portion 15 is inserted along the peripheral portion of the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is another connection terminal, and the connection portion 12, the connection portion 32, and the connection portion 42 are stacked together in the insertion direction (Z direction).

This connection terminal 10 and assembly structure 1 can prevent misalignment of the insertion hole 11 relative to the insertion hole 31 and the insertion hole 41, even when the connection terminal 10 is stacked on the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) having connection parts (connection parts 32 and 42) that are different in shape and size from the connection part 12.

In more detail, the peripheral convex portion 15 provided on the peripheral portion of the insertion hole 11 can be inserted along the peripheral portion of the insertion hole 31 and the insertion hole 41 in the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal. This allows the positions of the insertion hole 11 and the insertion hole 31 and the insertion hole 41 in the stacked connection terminals 10 and the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) to match, and prevents the connection terminal 10 from moving relative to the intersecting direction (X and Y directions) that intersects with the insertion direction (Z direction).

Therefore, even when the connection terminal 10 is stacked on the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) having connection parts (connection parts 32 and 42) that are different in shape and size from the connection part 12, it is possible to prevent the insertion hole 11 from being misaligned with the insertion hole 31 and the insertion hole 41. Therefore, the stacked connection terminal 10 and assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) can be attached to the fixing bolt all at once, improving the work efficiency of the attachment process to the fixing bolt.

In addition, the peripheral convex portion 15 is inserted along the peripheral portion of the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal. This makes it possible to prevent the stacked connection terminal 10 and the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) from coming apart, and there is no need to tape the electric wire 100 and the electric wires 200, 300, improving work efficiency when transporting the wires or when inserting them into a fixing bolt.

In addition, the peripheral convex portion 15 is formed in a ring shape along the peripheral portion of the insertion hole 11, so that the peripheral convex portion 15 formed in a ring shape can be abutted against the entire peripheral portion of the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal. This reliably prevents misalignment of the stacked connection terminal 10 and the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40).

Furthermore, a holding portion 16 is provided on the outer edge of the connection portion 12 to hold the outer edges of the connection portion 32 and connection portion 42 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal. This allows the peripheral protrusion 15 and the holding portion 16 to clamp the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal.

This reliably prevents misalignment between the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) and the insertion holes 11 of the connection terminals 10, and also prevents rotation of the connection terminals 10 relative to the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) that are the other connection terminals.

This makes it possible to prevent the orientation of the electric wires 100, 200, 300 connected to each of the connection terminals 10 and assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) from changing when transporting stacked connection terminals 10 and assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), improving work efficiency after transport.

Furthermore, a connecting portion 14 is provided between the connection portion 12 and the electric wire connection portion 13, and the connecting portion 14 has an offset action that arranges the electric wire connection portion 13 at a predetermined interval in the opposite direction to the protruding direction of the peripheral convex portion 15 with respect to the connection portion 12. This makes it possible to prevent the electric wires 100, 200, and 300 connected to the electric wire connection portions 13, 33, and 43 of the stacked connection terminals 10 and assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) and the electric wire connection portions 13, 33, and 43 from interfering with each other. In addition, the load on the electric wire connection portions 13, 33, and 43 and the load on the connection portions 12, 32, and 42 can be reduced.

This prevents the connection portion 12 from bending, ensures surface contact between the connection portion 12 and the connection portions 32 and 42, and ensures reliable conductivity, and prevents the peripheral convex portion 15 from coming loose from the other connection terminals, the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40).

In addition, the outer edges of the connection parts 32 and 42 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) stacked in the insertion direction (Z direction) are held by the holding part 16 provided on the outer edge of the connection part 12. Therefore, the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) stacked in the insertion direction (Z direction) can be clamped between the peripheral convex part 15 and the holding part 16, so that the positional deviation between the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) and the insertion holes 11 of the connection terminals 10 can be reliably prevented, and the rotation of the connection terminals 10 relative to the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) can be prevented.

This makes it possible to prevent the orientation of the wires 100, 200, and 300 connected to the respective connection terminals 10 and assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40) from changing when transporting the stacked connection terminals 10 and assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), thereby improving work efficiency after transport.

(Embodiment 2)
Next, a connection terminal 10a which is another embodiment of the connection terminal 10 will be described with reference to FIG.
Fig. 6(a) shows a plan view of the connection terminal 10a, and Fig. 6(b) shows a cross-sectional view taken along line CC in Fig. 6(a). In the connection terminal 10a shown in Fig. 6, the same parts as those in the connection terminal 10 are designated by the same reference numerals, and detailed explanations thereof will be omitted.

This connection terminal 10a has a number of peripheral protrusions 15a that protrude from the periphery of the insertion hole 11 in the insertion direction (Z direction) of the insertion hole 11 and are inserted along the periphery of the insertion hole 31 and insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) (see previous figure), which is the other stacked connection terminal.

As shown in FIG. 6, four of these peripheral convex portions 15a are provided along the periphery of the insertion hole 11 at equal intervals of 90 degrees.
In this embodiment, a total of four peripheral protrusions 15a are provided at equal intervals of 90 degrees on the circumference of the insertion hole 11, but this may be three peripheral protrusions at equal intervals of 120 degrees on the circumference, or six peripheral protrusions at equal intervals of 60 degrees on the circumference. Alternatively, a configuration in which multiple peripheral protrusions are provided at any unequal intervals on the circumference may be adopted.

In this way, the connection terminal 10a shown in FIG. 6 has substantially the same effect as the connection terminal 10 described with reference to FIGS. 1 to 5.

The peripheral convex portions 15a are provided at a predetermined interval along the periphery of the insertion hole 11, and adjacent peripheral convex portions 15a are spaced apart at a predetermined interval, so that the peripheral convex portions 15a are easily bent toward the inside of the insertion holes 31 and 41. Therefore, the peripheral convex portions 15a can be easily inserted into the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), which are other connection terminals, and the work efficiency of the process of stacking the connection terminals 10 can be improved.

(Embodiment 3)
Next, a connection terminal 10b which is another embodiment of the connection terminal 10 will be described with reference to FIG.
Fig. 7A is a cross-sectional view of the connection terminal 10b. In the connection terminal 10b shown in Fig. 7A, the same parts as those in the connection terminal 10 and the connection terminal 10a are denoted by the same reference numerals, and detailed description thereof will be omitted.

The connection terminal 10b of this embodiment 3, like the connection terminal 10a of the previous embodiment 2, has a plurality of peripheral protrusions 15b that protrude from the peripheral portion of the insertion hole 11 along the insertion direction (Z direction) of the insertion hole 11 and are inserted along the peripheral portions of the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40) (see previous figure), which are other stacked connection terminals.

Similar to the peripheral protrusions 15a, four peripheral protrusions 15b are provided along the periphery of the insertion hole 11 at equal intervals of 90 degrees.
Moreover, the peripheral convex portion 15b is formed in a tapered shape. That is, a tapered portion 151 is formed on the inner side of the peripheral convex portion 15b, and the plate thickness of the tip side of the peripheral convex portion 15b is made thinner than the plate thickness of the base end side of the peripheral convex portion 15b, thereby forming the peripheral convex portion 15b in a tapered shape.

In this way, the connection terminal 10b shown in FIG. 7A has substantially the same effects as the connection terminal 10 described with reference to FIGS. 1 to 5 and the connection terminal 10a shown in FIG.
7A, the peripheral convex portion 15b is tapered, which reduces the rigidity of the tip portion of the peripheral convex portion 15b, thereby reducing the resistance when the peripheral convex portion 15a is inserted into the insertion holes 31 and 41 of the assembly terminal 20 (the p-type connection terminal 30 and the q-type connection terminal 40), which is another connection terminal.

This allows the peripheral convex portion 15a to be easily inserted into the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), which are the connection terminals to be stacked. In addition, the base end portion of the peripheral convex portion 15b has a certain rigidity because the plate thickness is thicker. This prevents the insertion holes 11 of the stacked connection terminals 10 from being misaligned with the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), which are the other connection terminals.

Instead of the configuration shown in FIG. 7A, a tapered portion 151 may be formed on the outer side of the peripheral convex portion 15b.
By forming the tapered portion 151 on the outer side in this manner, when the peripheral convex portion 15b is tapered in the plate thickness direction, the peripheral convex portion 15b can be guided into the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40), which are the connection terminals to be stacked.

This allows the peripheral convex portion 15b to be more easily inserted into the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40), which are the connection terminals to be stacked, improving the efficiency of the assembly work.

(Embodiment 4)
Next, a connection terminal 10c which is another embodiment of the connection terminal 10 will be described with reference to FIG.
Fig. 7(b) is a schematic perspective view of the connection terminal 10c as viewed from the protruding direction of the peripheral convex portion 15c. In the connection terminal 10b shown in Fig. 7(b), the same parts as those in the connection terminal 10 and the connection terminals 10a and 10b are denoted by the same reference numerals and detailed description thereof will be omitted.

In this connection terminal 10c, as in the previous embodiments 2 and 3 (connection terminal 10a and connection terminal 10b), a plurality of peripheral protrusions 15c are provided on the periphery of the insertion hole 11, which protrude along the insertion direction (Z direction) of the insertion hole 11 and are inserted along the periphery of the insertion hole 31 and insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40) (see previous figure), which is the other stacked connection terminal.

Similar to the peripheral convex portions 15a, four of these peripheral convex portions 15c are provided at equal intervals of 90 degrees along the periphery of the insertion hole 11. Moreover, the peripheral convex portions 15c are formed in a tapered shape. That is, the base end side of each of the multiple peripheral convex portions 15c is formed wide and the tip end side is formed narrow, thereby forming the peripheral convex portions 15c in a tapered shape.
In other words, the peripheral convex portion 15c is formed in a tapered shape by making the circumferential length of the tip side shorter than the circumferential length of the base end side of the peripheral convex portion 15c.

In this way, the connection terminal 10c shown in FIG. 7B has substantially the same effects as the connection terminal 10 described with reference to FIGS. 1 to 5 and the connection terminal 10a shown in FIG.
7(a), the connecting terminal 10c shown in Fig. 7(b) has a peripheral convex portion 15c formed in a tapered shape in a direction along the periphery of the insertion hole 11. This makes it possible to reduce the rigidity of the tip portion of the peripheral convex portion 15c, and to reduce the resistance when the peripheral convex portion 15c is inserted into the insertion holes 31 and 41 of the assembly terminals 20 (the p-type connecting terminal 30 and the q-type connecting terminal 40), which are other connecting terminals.

This allows the peripheral convex portion 15c to be easily inserted into the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), which are the connection terminals to be stacked. The base end portion of the peripheral convex portion 15c has a predetermined rigidity because the circumferential length is longer than the circumferential length of the tip side. This prevents misalignment of the insertion holes 11 of the stacked connection terminals 10 with respect to the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminals 30 and q-type connection terminals 40), which are the other connection terminals.

(Embodiment 5)
Next, a connection terminal 10d which is another embodiment of the connection terminal 10 will be described with reference to FIG.
Fig. 8 shows still another embodiment of the connection terminal, Fig. 8(a) shows a cross-sectional view of the inserted portion 152 of the peripheral convex portion 15d before crimping, and Fig. 8(b) shows a cross-sectional view of the inserted portion 152 of the peripheral convex portion 15d after crimping. In the connection terminal 10d shown in Fig. 8, the same parts as those in the connection terminal 10 and the connection terminal 10a are given the same reference numerals and detailed description thereof will be omitted.

In the connection terminal 10d of this fifth embodiment, the peripheral portion of the insertion hole 11 in the connection portion 12 of the connection terminal 10d is provided with a plurality of peripheral protrusions 15d that protrude along the insertion direction (Z direction) of the insertion hole 11 and are inserted along the peripheral portions of the insertion holes 31 and 41 of the assembly terminals 20 (p-type connection terminal 30 and q-type connection terminal 40) (see previous figure), which are other stacked connection terminals.

Like the peripheral protrusions 15a, four of these peripheral protrusions 15d are provided at equal intervals of 90 degrees along the periphery of the insertion hole 11. Moreover, the peripheral protrusions 15d are formed with a protruding amount that is greater than the thickness of the connection portion 32 and the connection portion 42 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which are the other connection terminals.

In more detail, when the p-type connection terminal 30 and the q-type connection terminal 40 shown in FIG. 2 are assembled as shown in FIG. 1, and the total thickness of the connection portion 32 and the connection portion 42 is t, the protrusion amount L of the peripheral convex portion 15d is formed to be equal to or greater than the thickness t. In other words, it is formed so that the relationship L>t is established (see FIG. 8(a)).

When the peripheral convex portion 15d of the connection portion 12 of the connection terminal 10 configured in this manner is inserted into the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is another connection terminal, the tip side of the peripheral convex portion 15d protrudes in the insertion direction (Z direction) from the back surface of the assembly terminal 20, and this protruding portion becomes the insertion portion 152.

Then, the protruding portion 152 of the peripheral convex portion 15d inserted into the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal, is crimped outwardly to the hole edge of the insertion hole 31 and the insertion hole 41 to form a crimped portion 153, and the crimped portion 153 and the connection portion 12 of the connection terminal 10 can clamp and fix the connection portion 32 and the connection portion 42 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal.

In this way, the connection terminal 10d shown in FIG. 8 has substantially the same effects as the connection terminal 10 described with reference to FIGS. 1 to 5 and the connection terminal 10a shown in FIG.
In addition, the connection terminal 10d shown in Figure 8 has a peripheral convex portion 15d formed with a protruding amount L that is greater than or equal to the combined thickness t of the connection portions 32 and 42 of the assembly terminal 20 (the p-type connection terminal 30 and the q-type connection terminal 40), which is the other connection terminal, and the protruding portions 152 of the peripheral convex portion 15d inserted into the insertion holes 31 and 41 of the assembly terminal 20 (the p-type connection terminal 30 and the q-type connection terminal 40), which is the other connection terminal, can be crimped and fixed.

Therefore, the connection portion 32 and the connection portion 42 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal, can be sandwiched between the connection portion 12 of the connection terminal 10 and the insertion portion 152 (more specifically, the crimping portion 153) of the peripheral convex portion 15d from the insertion direction. This allows the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal, to be fixed by the connection terminal 10, and more reliably prevents misalignment between the insertion hole 31 and the insertion hole 41 of the assembly terminal 20 (p-type connection terminal 30 and q-type connection terminal 40), which is the other connection terminal, and the insertion hole 11 of the connection terminal 10.

In this embodiment, the peripheral convex portion 15d is formed with a protruding amount L that is equal to or greater than the combined thickness t of the connection portion 32 and the connection portion 42. However, the holding piece 162 may also be similarly protruding in the Z direction, and the protruding portion of the holding piece 162 may be crimped to the insertion portion 152 to clamp the connection portion 32 and the connection portion 42 from the inside and outside.

In the configuration of the present invention and the correspondence between the above-mentioned embodiment, the connection terminal of the present invention corresponds to the connection terminal 10 of the embodiment, and similarly,
The through hole corresponds to the through hole 11,
The connection portion corresponds to the connection portion 12,
The electric wire corresponds to the electric wire 100,
The electric wire connection portion corresponds to the electric wire connection portion 13,
The connecting portion and the offset connection portion correspond to the connecting portion 14,
The peripheral convex portions correspond to the peripheral convex portions 15, 15a, 15b, 15c, and 15d,
The insert portion corresponds to the insert portion 152,
The holding portion corresponds to the holding portion 16,
The other connection terminals correspond to the assembly terminals 20 (the p-type connection terminal 30 and the q-type connection terminal 40),
The through holes correspond to the through holes 31 and 41.
The connection portion corresponds to the connection portion 32 and the connection portion 42,
The assembly structure of the connection terminal corresponds to assembly structure 1, but
The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

For example, as the assembly terminal 20 which is the other connection terminal, a p-type connection terminal 30 and a q-type connection terminal 40 having different shapes of the connection portion 32 and the connection portion 42 have been exemplified, but the other connection terminals may be terminals having connection portions with the same shape.
Further, as the other connection terminal, the assembled terminal 20 in which two connection terminals, the p-type connection terminal 30 and the q-type connection terminal 40, are combined has been exemplified, but the other connection terminal may be a single connection terminal.

Furthermore, in the example shown, four peripheral protrusions 15a, 15b, 15c, and 15d are provided at equal intervals of 90 degrees on the circumference of the insertion hole 11, but two may be provided at equal intervals of 180 degrees, three may be provided at equal intervals of 120 degrees, or six may be provided at equal intervals of 60 degrees. Furthermore, multiple protrusions may be provided at any equal or unequal intervals.

Furthermore, the tapered shape of the peripheral convex portion may be a combination of a structure in which the plate thickness of the peripheral convex portion is tapered, and a structure in which the peripheral convex portion is tapered in the direction along the periphery of the insertion hole (i.e., the circumferential direction) when multiple peripheral convex portions are provided at predetermined intervals along the periphery of the insertion hole.

In addition, in each of the above-described embodiments, two holding portions 16 extending outward in the Y direction from the outer periphery of the connection portion 12 corresponding to the center of the insertion hole 11 are illustrated, but in addition to these two holding portions 16, a holding portion extending in the X direction from the outer periphery of the connection portion 12 corresponding to the center of the insertion hole 11 on the opposite side to the electric wire connection portion 13 may be provided. Also, there may be one holding portion 16, or three or more holding portions may be arranged at equal or unequal intervals.

Furthermore, although the connection portion 12 is exemplified as having a doughnut shape in plan view, as long as the connection portion has an insertion hole 11, it is not limited to a doughnut shape in plan view, and may be a square connection portion in plan view.

In addition, the structure in which the connecting portion 14 extends obliquely from the connection portion 12 toward the electric wire connection portion 13 has been exemplified, but the connecting portion 14 may extend straight from the connection portion 12 in a direction opposite to the protruding direction of the peripheral convex portion 15, and then extend straight from its extending end toward the electric wire connection portion 13, and be formed into an inverted L-shape in side view that is connected to the electric wire connection portion 13. In addition, the connecting portion 14 may extend straight from the connection portion 12 toward the electric wire connection portion 13 in a direction opposite to the protruding direction of the peripheral convex portion 15, and then extend straight from its extending end toward the electric wire connection portion 13, and be formed into an L-shape in side view that is connected to the electric wire connection portion 13.

1 Assembly structure 10 Connection terminal 11 Insertion hole 12 Connection portion 13 Electric wire connection portion 14 Linking portion 15, 15a, 15b, 15c, 15d Peripheral convex portion 152 Insertion portion 16 Holding portion 20 Assembly terminal 30 P-type connection terminal (another connection terminal)
31 Insertion hole 32 Connection portion 40 Q-type connection terminal (another connection terminal)
41 Insertion hole 42 Connection part 100 Electric wire

Claims (4)

A connection terminal having a connection portion having an insertion hole for inserting a fixing bolt therethrough and an electric wire connection portion for connecting an electric wire,
a plurality of peripheral protrusions are provided on a peripheral portion of the insertion hole of the connection portion , the peripheral protrusions protruding in an insertion direction and being inserted along a peripheral portion of an insertion hole of a connection portion of another connection terminal stacked with the connection portion;
a holding portion for holding an outer edge of the connection portion of the other connection terminal is provided in a width direction perpendicular to the insertion direction of an outer edge of the connection portion of the connection terminal,
the plurality of peripheral convex portions are provided at predetermined intervals along a peripheral portion of the insertion hole of the connection portion of the connection terminal,
the other connection terminals are configured by assembling a p-type terminal and a q-type terminal, each of which has a connection portion having an insertion hole for inserting the fixing bolt and an electric wire connection portion for connecting an electric wire different from the electric wire, from the width direction and stacking them in the insertion direction,
the insertion hole of each of the p-type terminal and the q-type terminal forms the insertion hole of the other connection terminal inserted in the insertion direction when the connection portions of the p-type terminal and the q-type terminal are stacked,
a length in the insertion direction of the peripheral convex portion and the holding portion is equal to a thickness in the insertion direction of the connection portion of the other connection terminal configured by stacking the connection portions of the p-type terminal and the q-type terminal in the insertion direction,
A connection terminal in which a plurality of peripheral convex portions inserted along the peripheral portion of the insertion hole in the other connection terminal and the holding portion that holds the outer edges of the connection portions of the stacked p-type terminal and q-type terminal clamp the connection portion of the other connection terminal in the insertion direction. The connection terminal according to claim 1 , wherein the peripheral convex portion is tapered. a connecting portion is provided between the connection portion of the connection terminal and the electric wire connection portion of the connection terminal, the connecting portion and the electric wire connection portion being connected to each other;
The connecting portion is
3. The connection terminal according to claim 1, wherein the wire connection portion of the connection terminal is disposed at a predetermined interval from the connection portion of the connection terminal in a direction opposite to a protruding direction of the peripheral convex portion. A connection terminal assembly structure in which a connection terminal having a connection portion having an insertion hole for inserting a fixing bolt and an electric wire connection portion for connecting an electric wire and another connection terminal are stacked in an insertion direction of inserting the fixing bolt,
The connection terminal is
a plurality of peripheral projections are provided on a peripheral portion of the insertion hole of the connection portion , the peripheral projections protruding in an insertion direction and inserted along a peripheral portion of an insertion hole of a connection portion of another connection terminal stacked with the connection portion;
a holding portion for holding an outer edge of the connection portion of the other connection terminal is provided in a width direction perpendicular to the insertion direction of an outer edge of the connection portion of the other connection terminal,
the plurality of peripheral convex portions are provided at predetermined intervals along a peripheral portion of the insertion hole of the connection portion of the connection terminal,
the other connection terminals are configured by assembling a p-type terminal and a q-type terminal, each of which has a connection portion having an insertion hole for inserting the fixing bolt and an electric wire connection portion for connecting an electric wire different from the electric wire, from the width direction and stacking them in the insertion direction,
the insertion hole in each of the p-type terminal and the q-type terminal forms the insertion hole of the other connection terminal inserted in the insertion direction when the connection portions in the p-type terminal and the q-type terminal are stacked,
a length in the insertion direction of the peripheral convex portion and the holding portion is equal to a thickness in the insertion direction of the connection portion of the other connection terminal configured by stacking the connection portions of the p-type terminal and the q-type terminal in the insertion direction,
An assembly structure of a connection terminal in which a plurality of peripheral convex portions inserted along the peripheral portion of the insertion hole in the other connection terminal and the holding portion which holds the outer edges of the connection portions of the stacked p-type terminal and q-type terminal clamp the connection portion of the other connection terminal in the insertion direction.

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