Inter-terminal connection structure

Abstract

To provide an inter-terminal connection structure which allows reduction in thickness and size while preventing erroneous contact by an operator.SOLUTION: An inter-terminal connection structure 3 comprises: a first connector 1 having a first terminal 10; a second connector 2 having a second terminal 30 to be connected to the first terminal 10; and a fastener 50 which fastens the first terminal 10 to the second terminal 30. The first connector 1 has: a first opening part 21 from which a first contact part 11 provided on the first terminal 10 is exposed; and a protruding part 25 which protrudes toward the second connector 2. The second connector 2 has a second opening part 41 from which a second contact part 34 provided on the second terminal 30 and an inserted part 33 are exposed. The inserted part is provided on the second terminal 30 and has a shape that allows the protruding part 25 to be inserted thereinto. The fastener 50 has a bolt 51, and thickness adjustment parts 52 and 53. The fastener fastens the first terminal 10 to the second terminal 30 when: the first connector 1 is fitted to the second connector 2; the protruding part 25 is inserted into the inserted part 33; and the first contact part 11 is in contact with the second contact part 34.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an inter-terminal connection structure comprising a first connector having a first terminal, a second connector having a second terminal electrically connected to the first terminal, and a fastener that fastens the first terminal and the second terminal. [Background technology]

[0002] BACKGROUND ART Connection structures have been proposed in the past in which a pair of terminals are fastened together with a bolt or the like to electrically connect them (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-089890 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional connection structure described above, a cylindrical relay metal fitting is required to be sandwiched between the terminals to prevent an operator from accidentally touching a terminal to which a voltage is applied (a so-called live part). Specifically, in the conventional connection structure, the relay metal fitting is sandwiched between the pair of terminals, and the pair of terminals and the relay metal fitting are fastened together with bolts and nuts to electrically connect the pair of terminals. However, the need for this relay metal fitting makes it difficult to make the conventional connection structure thinner and more compact.

[0005] One object of the present invention is to provide a terminal connection structure that can be made thinner and smaller while preventing accidental contact by an operator. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the terminal connection structure according to the present invention has the following features.

[0007] A terminal-to-terminal connection structure comprising: a first connector having a first terminal; a second connector having a second terminal electrically connected to the first terminal; and a fastener fastening the first terminal and the second terminal, the terminal-to-terminal connection structure electrically connecting the first terminal and the second terminal, The first connector is a first opening that exposes a first contact portion of the first terminal, and a protrusion that protrudes toward the second connector; The second connector is a second opening that exposes a second contact portion of the second terminal and an insertion portion that is of the second terminal and has a shape into which the protrusion can be inserted; The fastener is a bolt; and a thickness adjusting portion sandwiched between a contact point between the first contact portion and the second contact portion and a seat portion of the bolt, wherein the first connector and the second connector are fitted together, the protrusion portion is inserted into the inserted portion, and the first contact portion and the second contact portion are in contact with each other, and the first terminal and the second terminal are fastened together. It has a terminal connection structure. [Effects of the Invention]

[0008] According to the terminal connection structure of the present invention, when the first connector and the second connector are mated, the protrusion of the first connector is inserted into the receiving portion of the second terminal, and the first contact portion of the first terminal and the second contact portion of the second terminal are brought into contact with each other, and the first terminal and the second terminal are fastened by a fastener to form an electrical connection. That is, the first terminal and the second terminal are connected without the need for an intermediate terminal or the like, as in conventional connection structures. Furthermore, by sandwiching a thickness adjustment portion between the bolt seat and the contact point between the first contact portion and the second contact portion, even if the thickness of the first contact portion or the second contact portion differs depending on the specifications required for the terminal connection structure, the thickness adjustment portion can absorb the difference in thickness of the first contact portion or the second contact portion, thereby enabling the first connector and the second connector to have a common structure. Furthermore, by housing the first terminal in the first connector so that the first contact portion of the first terminal is exposed from the first opening, it is possible to prevent an operator from touching areas other than the first contact portion. Therefore, the terminal connection structure of this configuration can be made thinner and smaller while preventing accidental contact by workers.

[0009] The present invention has been briefly described above. The details of the present invention will become more apparent from the detailed description of the invention set forth below, taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an inter-terminal connection structure according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the terminal connection structure shown in FIG. [Figure 3] 3 is a perspective view of the first connector shown in FIG. 2 as viewed obliquely from below. [Figure 4] FIG. 4 is a front view of the terminal connection structure shown in FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line BB in FIG. [Figure 7] FIG. 7 is a diagram corresponding to FIG. 6 in accordance with a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0011] <Embodiment> Hereinafter, a terminal connection structure 3 according to an embodiment of the present invention will be described with reference to the drawings. The terminal connection structure 3 shown in Figures 1 and 2 functions to electrically connect a first terminal 10 (see Figure 6) in the first connector 1 and a second terminal 30 in the second connector 2 when the first connector 1 and the second connector 2 are mated together.

[0012] For ease of explanation, the following definitions are used, as shown in Figure 1 etc., for the "front-rear direction," "up-down direction," "left-right direction," "front," "rear," "up," "down," "left," and "right." The "front-rear direction," "up-down direction," and "left-right direction" are perpendicular to each other. The front-rear direction coincides with the mating direction of the first connector 1 and the second connector 2.

[0013] 2 and 6, the first connector 1 mainly includes a first terminal 10 and a first housing 20 that accommodates the first terminal 10. As shown in Fig. 2, the second connector 2 mainly includes a second terminal 30 and a second housing 40 that accommodates the second terminal 30. First, the configuration of each member that constitutes the first connector 1 will be described below in order.

[0014] First, the first terminal 10 will be described. As shown in FIG. 6, the metal first terminal 10 has a generally cylindrical shape extending in the front-rear direction. A female thread (not shown) is provided along the front-rear direction on the cylindrical inner wall surface defining the hollow portion of the first terminal 10. A generally annular protrusion 11 is integrally formed on the front end surface (annular flat surface) of the first terminal 10 so as to protrude forward when viewed from the front (see also FIG. 3). However, grooves (not shown) recessed rearward and extending radially (vertically) of the protrusion 11 are formed on each of the protruding end surfaces (front end surfaces) of the upper and lower ends of the protrusion 11 so as to divide the protrusion 11 into left and right halves. A pair of upper and lower bridge portions 24 of the first housing 20, which will be described later, are accommodated in the pair of upper and lower grooves of the protrusion 11. A protrusion 12 protruding radially outward is integrally formed on the outer periphery of the first terminal 10 near its rear end. The outer periphery of the protrusion 12 has, for example, a regular hexagonal shape when viewed from the front-rear direction. Here, the protrusion 11 corresponds to the "first contact portion" of the present invention. The protrusion height (length in the front-rear direction) of the protrusion 11 can vary depending on the specifications required for the terminal connection structure 3.

[0015] Next, the first housing 20 will be described. The first housing 20 is a resin molded product, and as shown in FIGS. 2 and 3, etc., includes a pair of left and right cylindrical portions 21 and a connecting main body 22 that connects the rear ends of the pair of left and right cylindrical portions 21. The pair of left and right cylindrical portions 21 extend in the front-rear direction so as to be spaced apart in the left-right direction. The cylindrical portions 21 have a substantially cylindrical shape and are open at both the front and rear ends. As shown in FIGS. 2, 3, and 6, a small-diameter cylindrical portion 23 extending in the front-rear direction is supported in the hollow portion at the front end of the cylindrical portion 21 by a pair of upper and lower bridge portions 24 (see FIG. 3) that extend in the up-down direction so as to be positioned coaxially with the cylindrical portion 21. More specifically, the upper end of the rear end of the small-diameter cylindrical portion 23 is connected to the inner wall surface of the cylindrical portion 21 by the upper bridge portion 24, and the lower end of the rear end of the small-diameter cylindrical portion 23 is connected to the inner wall surface of the cylindrical portion 21 by the lower bridge portion 24. The small-diameter cylindrical portion 23 has a cylindrical shape with a smaller diameter than the cylindrical portion 21, and is open at both the front and rear ends. The front end position of the small-diameter cylindrical portion 23 and the front end position of the cylindrical portion 21 are substantially aligned in the front-to-rear direction (see FIG. 6). As shown in FIGS. 2 and 3, three rearwardly recessed notches are provided in the lower region of the front edge of the cylindrical portion 21 at intervals in the circumferential direction of the cylindrical portion 21, and protrusions 25 protruding forward are formed at two locations between the three notches. Here, the opening at the front edge of the cylindrical portion 21 corresponds to the "first opening" of the present invention, and the protrusions 25 correspond to the "protrusions" of the present invention.

[0016] To assemble the first connector 1, the first terminals 10 are inserted from the rear into the pair of left and right cylindrical portions 21 of the first housing 20. When the first terminals 10 are completely accommodated in the first housing 20, as shown in Fig. 6, the pair of upper and lower bridge portions 24 of the cylindrical portion 21 of the first housing 20 are accommodated in the pair of upper and lower grooves of the protrusion 11 of the first terminal 10, and the substantially annular protrusion 11 is disposed so as to cover the outer periphery of the rear edge of the small-diameter cylindrical portion 23, with the front end surface (flat surface) of the protrusion 11 being located forward of the pair of upper and lower bridge portions 24. Furthermore, the engagement between the protrusion 12 of the first terminal 10 and the inner wall surface of the cylindrical portion 21 restricts the relative rotation of the first terminal 10 about the axis with respect to the cylindrical portion 21. In this example, after the first terminals 10 have been accommodated in each of the pair of left and right tubular portions 21 of the first housing 20, resin holders 26 are attached to the rear edge portions of the pair of left and right tubular portions 21 (see FIGS. 2, 5, and 6). The holders 26 function to prevent the first terminals 10 from falling rearward from the first housing 20. This completes the assembly of the first connector 1, and the first connector 1 shown in FIG. 2 is obtained. Note that electric wires (e.g., power lines), not shown, are electrically connected by fastening or the like to each of the rear end portions of the pair of left and right first terminals 10 of the assembled first connector 1.

[0017] 3 and 6, in the first connector 1 after assembly is completed, the front end faces of the protrusions 11 of the first terminals 10 are exposed to the outside through openings in the front edge of the cylindrical portion 21 of the first housing 20. The front end faces of the protrusions 11 of the first terminals 10 are located rearward of the front ends of the cylindrical portion 21 and the small-diameter cylindrical portion 23, and are surrounded by the cylindrical portion 21 and the small-diameter cylindrical portion 23. This prevents workers from accidentally touching the front end faces of the protrusions 11 of the first terminals 10. The configuration of the first connector 1 has been described above. Next, the configuration of each member constituting the second connector 2 will be described in order.

[0018] First, the second terminal 30 will be described. As shown in FIG. 2 , the second terminal 30 is composed of a metal bus bar 31 having a long, flat, rectangular cross-section, and an insulating coating 32 covering the outer periphery of the bus bar 31. The insulating coating 32 is removed from one end (upper end) of the bus bar 31 by so-called terminal processing. Two through holes 33 are formed at one end of the bus bar 31, penetrating in the thickness direction (front-rear direction) of the bus bar 31, corresponding to the two protrusions 25 of the cylindrical portion 21 of the first housing 20. A flat protrusion 34 having a substantially circular shape when viewed in the thickness direction is extended from one end of the bus bar 31. A through hole 35 is formed at the center of the protrusion 34, penetrating in the thickness direction, corresponding to the small-diameter cylindrical portion 23 of the first housing 20 (so that the small-diameter cylindrical portion 23 can be inserted therethrough). Here, the protrusion 34 corresponds to the "second contact portion" of the present invention, and the through hole 33 corresponds to the "inserted portion" of the present invention. The plate thickness (length in the front-rear direction) of the protrusion 34 can vary depending on the specifications required for the terminal-to-terminal connection structure 3.

[0019] Next, the second housing 40 will be described. The second housing 40 is a resin-molded product, and as shown in FIGS. 2 to 4 , the second housing 40 integrally includes a pair of left and right tubular portions 41, a connecting main body 42 connecting the rear ends of the pair of left and right tubular portions 41, and a pair of left and right terminal-accommodating tubular portions 43 extending downward from respective front-rear positions of the pair of left and right tubular portions 41 adjacent to the front of the connecting main body 42. The pair of left and right tubular portions 41 extend in the front-rear direction so as to be aligned with a gap in the left-right direction, corresponding to the pair of left and right tubular portions 21 of the first housing 20. The tubular portions 41 have a substantially cylindrical shape and are open at both the front and rear ends. The connecting main body 42 has an outer peripheral shape that is elongated in the left-right direction when viewed from the front-rear direction. The terminal-accommodating tubular portion 43 has a rectangular tubular shape so that the bus bar 31 of the second terminal 30 can be inserted therein, and the hollow portion of the terminal-accommodating tubular portion 43 and the hollow portion of the tubular portion 41 are in communication with each other. The lower end side of the terminal accommodating tubular portion 43 is open. A rubber annular packing 44 is attached to the outer periphery of the connecting body portion 42. A resin holder 45 is attached to the rear end side of the connecting body portion 42 to prevent the packing 44 from falling off, etc. A resin holder 46 is attached to the lower edge of the terminal accommodating tubular portion 43 (see Figures 2, 5 and 6). The holder 46 functions to prevent rattling of the second terminal 30 extending from the lower edge of the terminal accommodating tubular portion 43. Here, the opening at the rear edge of the tubular portion 41 corresponds to the "second opening" of the present invention.

[0020] To assemble the second connector 2, the second terminals 30 are inserted and accommodated from below into the pair of left and right terminal accommodating cylindrical portions 43 of the second housing 40. When the second terminals 30 are completely accommodated in the second housing 40, the protrusions 34 and the two through holes 33 of the second terminals 30 are positioned within the hollow portion of the cylindrical portion 41 of the second housing 40, and are exposed to the outside through openings at the rear end edge of the cylindrical portion 41. Next, as shown in FIG. 6 , the first housing 20 of the first connector 1 is fitted into the second housing 40 from the rear side. This fitting progresses as follows: cylindrical portion 21 is inserted into cylindrical portion 41, protrusion 34 is inserted into cylindrical portion 21, small-diameter cylindrical portion 23 is inserted into through-hole 35, and two protrusions 25 are inserted into two through-holes 33, respectively (see FIG. 5), and when fitting is complete, the front end face of protrusion 11 of first terminal 10 comes into contact with the rear end face of protrusion 34 of second terminal 30 (see FIG. 6). Next, for each of the pair of left and right first terminals 10, the male thread portion of metal bolt 51, through which metal annular collar 52 is inserted, is inserted into small-diameter cylindrical portion 23 located in through-hole 35 of protrusion 34, and is screwed with a predetermined torque into the female thread of the hollow portion of first terminal 10. As a result, the protrusion 34 of the second terminal 30 is pressed and clamped between the protrusion 11 of the first terminal 10 and the seat portion 51a of the bolt 51 (more specifically, the collar 52), so that the front end surface of the protrusion 11 and the rear end surface of the protrusion 34 are in direct pressing contact with each other, thereby fastening and fixing the first terminal 10 and the second terminal 30. As a result, the assembly of the second connector 2 is completed, and at the same time, the terminal-to-terminal connection structure 3 shown in FIG. 1 is completed. Here, the fastener 50 (see FIG. 2) including the bolt 51 and the collar 52 corresponds to the "fastener" of the present invention, the bolt 51 corresponds to the "bolt" of the present invention, and the collar 52 corresponds to the "thickness adjusting portion" of the present invention. The thickness (length in the front-to-rear direction) of the collar 52 is adjusted according to the specifications required for the terminal-to-terminal connection structure 3.

[0021] <Actions and Effects> As described above, according to the terminal connection structure 3 of this embodiment, when the first connector 1 and the second connector 2 are mated, the protrusion 25 of the first connector 1 is inserted into the insertion portion (through hole 33) of the second terminal 30, and the first contact portion (protrusion 11) of the first terminal 10 and the second contact portion (protrusion 34) of the second terminal 30 are in contact with each other, and the first terminal 10 and the second terminal 30 are fastened together by a fastener (bolt 50) to be electrically connected. Furthermore, by sandwiching a thickness adjustment portion (collar 52) between the seat portion 51a of the bolt 51 and the contact point between the first contact portion (protrusion 11) and the second contact portion (protrusion 34), even if the thickness of the first contact portion 11 or the second contact portion 34 differs depending on the specifications required for the terminal connection structure 3, the thickness adjustment portion 52 can absorb the difference in thickness of the first contact portion 11 or the second contact portion 34, thereby making it possible to standardize the structure of the first connector 1 or the second connector 2. Furthermore, since the first terminal 10 is accommodated in the first connector 1 so that the first contact portion 11 of the first terminal 10 is exposed from the first opening, it is possible to prevent an operator from touching any portion other than the first contact portion 11. Therefore, the inter-terminal connection structure 3 according to this embodiment can be made thinner and smaller while preventing an operator from accidentally touching it.

[0022] Furthermore, according to the terminal connection structure 3 of this embodiment, the first opening of the first connector 1 has a tubular portion 21, and a protrusion 25 is provided at the extending end of the tubular portion 21. This allows the tubular portion 21 and the protrusion 25, which form the first opening, to be integrated together, thereby making it possible to further reduce the size of the first connector 1.

[0023] Furthermore, according to the terminal connection structure 3 of this embodiment, the thickness adjusting portion (collar 52) of the fastener 50 is a separate member from the bearing surface portion 51a of the bolt 51. This allows a general bolt to be used as the bolt 51, which is advantageous in terms of manufacturing costs.

[0024] Furthermore, according to the inter-terminal connection structure 3 of this embodiment, the first terminal 10 has a cylindrical shape, the protrusion 11 of the first terminal 10 is used as a first contact portion, and a fastener (i.e., bolt 50) is screwed into the hollow portion of the first terminal 10. This allows the first connector 1 to be further miniaturized compared to when a nut is provided as a separate member.

[0025] <Other aspects> It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. are possible as appropriate. Furthermore, the material, shape, dimensions, number, location, etc. of each component in the above-described embodiments are arbitrary as long as they can achieve the present invention, and are not limited thereto.

[0026] In the above embodiment, the thickness adjustment portion (collar 52) of the fastener 50 is a separate member from the seating surface 51a of the bolt 51 (see FIG. 6 ). Alternatively, as shown in FIG. 7 , the thickness adjustment portion 53 of the fastener 50 may be an integral member with the seating surface 51a of the bolt 51. In the example shown in FIG. 7 , the thickness adjustment portion 53 is a portion that protrudes in an annular shape in the axial direction of the bolt 51 from the seating surface 51a of the bolt 51 so as to cover the periphery of the base of the male thread of the bolt 51. An annular groove 54 is formed between the thickness adjustment portion 53 and the base of the male thread of the bolt 51, and the groove 54 accommodates the front end edge of the small diameter tubular portion 23 of the first housing 20. The formation of this groove 54 prevents interference between the thickness adjustment portion 53 and the small diameter tubular portion 23. The groove 54 can also be omitted by shortening the length of the small diameter tubular portion 23 in the front-rear direction and retracting the position of the front end edge of the small diameter tubular portion 23 rearward. In this way, thickness adjusting portion 53 of fastener 50 is an integral member with seat portion 51a of bolt 51, which facilitates the work of fastening fastener 50, thereby providing an advantage in terms of productivity.

[0027] Here, the features of the embodiment of the terminal-to-terminal connection structure 3 according to the present invention will be briefly summarized and listed below in [1] to [4].

[0028] [1] A terminal connection structure (3) comprising: a first connector (1) having a first terminal (10); a second connector (2) having a second terminal (30) electrically connected to the first terminal (10); and a fastener (50) fastening the first terminal (10) and the second terminal (30), electrically connecting the first terminal (10) and the second terminal (30), The first connector (1) a first opening (21) that exposes a first contact portion (11) of the first terminal (10) and a protrusion (25) that protrudes toward the second connector (2); The second connector (2) a second opening (41) that exposes a second contact portion (34) of the second terminal (30) and an insertion portion (33) that is of a shape that allows the projection portion (25) to be inserted therein; The fastener (50) is a bolt (51) and thickness adjusting portions (52, 53) sandwiched between a contact point between the first contact portion (11) and the second contact portion (34) and a seating surface portion (51a) of the bolt (51), and fastens the first terminal (10) and the second terminal (30) when the first connector (1) and the second connector (2) are fitted together, the protrusion portion (25) is inserted into the inserted portion (33), and the first contact portion (11) and the second contact portion (34) are in contact with each other; Terminal connection structure (3).

[0029] According to the terminal connection structure having the configuration [1] above, when the first connector and the second connector are mated, the protrusion of the first connector is inserted into the receiving portion of the second terminal, and the first contact portion of the first terminal and the second contact portion of the second terminal are brought into contact with each other, and the first terminal and the second terminal are fastened by a fastener to form an electrical connection. That is, the first terminal and the second terminal are connected without the need for an intermediate terminal or the like, as in conventional connection structures. Furthermore, by sandwiching a thickness adjustment portion between the bolt seat and the contact point between the first contact portion and the second contact portion, even if the thickness of the first contact portion or the second contact portion differs depending on the specifications required for the terminal connection structure, the thickness adjustment portion can absorb the difference in thickness of the first contact portion or the second contact portion, thereby enabling the first connector and the second connector to have a common structure. Furthermore, by housing the first terminal in the first connector so that the first contact portion of the first terminal is exposed from the first opening, it is possible to prevent an operator from touching areas other than the first contact portion. Therefore, the terminal connection structure of this configuration can be made thinner and smaller while preventing accidental contact by workers.

[0030] [2] In the terminal connection structure (3) described in [1] above, The first opening is a cylindrical wall (21) surrounding the first contact portion (11) and extending in the fitting direction of the first connector (1) and the second connector (2), The cylindrical wall (21) The cylindrical wall (21) has the protrusion (25) at its extended end. Terminal connection structure (3).

[0031] According to the terminal connection structure of the above [2], the first opening of the first connector has a cylindrical wall, and a protrusion is provided at the extending end of the cylindrical wall. By integrating the cylindrical part and the protrusion that form the first opening in this way, the first connector can be further miniaturized.

[0032] [3] In the terminal connection structure (3) described in [1] above, The thickness adjusting unit is The seat portion (51a) is a separate or integral member (52, 53). Terminal connection structure (3).

[0033] According to the terminal connection structure of the configuration [3] above, the thickness adjustment portion of the fastener is a separate or integral member with the seat portion. When the thickness adjustment portion is separate, a general bolt can be used, which is advantageous in terms of manufacturing costs. When the thickness adjustment portion is integral, the work of fastening the fastener is simplified, which is advantageous in terms of productivity.

[0034] [4] In the terminal connection structure (3) described in [1] above, The first terminal (10) is The first terminal (10) has a cylindrical shape, and a cylindrical end (11) of the first terminal (10) is the first contact portion, The second terminal (30) is The second terminal (30) has a plate-like shape, and a plate surface portion (34) of the second terminal (30) is the second contact portion, The bolt (51) of the fastener (50) passes through the second terminal (30) and is screwed into the hollow portion of the first terminal (10), thereby fastening the first terminal (10) and the second terminal (30) together with the first contact portion (11) and the second contact portion (34) in contact with each other. Terminal connection structure (3).

[0035] According to the inter-terminal connection structure of the above [4], the first terminal has a cylindrical shape, the cylindrical end of the first terminal is used as the first contact portion, and a fastener (i.e., a bolt) is screwed into the hollow portion of the first terminal. This allows the first connector to be made even smaller than when a nut is provided as a separate member. [Explanation of symbols]

[0036] 1 First Connector 2 Second Connector 3. Terminal connection structure 10 1st terminal 11 Protrusion (first contact part, cylinder end) 21 cylindrical portion (first opening, cylindrical wall) 25 Protrusion 30 2nd terminal 33 Through hole (inserted part) 34 Protrusion (second contact part, plate surface part) 41 cylindrical portion (second opening) 50 Fasteners 51 volts 51a Seat part 52 Collar (thickness adjustment part) 53 Thickness adjustment unit

Claims

1. A terminal connection structure comprising: a first connector having a first terminal; a second connector having a second terminal electrically connected to the first terminal; and a fastener fastening the first terminal and the second terminal, the terminals electrically connecting the first terminal and the second terminal, The first connector is a first opening for exposing a first contact portion of the first terminal, and a protrusion protruding toward the second connector; The second connector is a second opening that exposes a second contact portion of the second terminal and an insertion portion that is of the second terminal and has a shape into which the protrusion can be inserted; The fastener is a bolt; and a thickness adjusting portion sandwiched between a contact point between the first contact portion and the second contact portion and a seat portion of the bolt, wherein the first connector and the second connector are fitted together, the protrusion portion is inserted into the inserted portion, and the first contact portion and the second contact portion are in contact with each other, and the first terminal and the second terminal are fastened together. Terminal connection structure.

2. 2. The terminal connection structure according to claim 1, The first opening is a cylindrical wall surrounding the first contact portion and extending in a fitting direction of the first connector and the second connector; The cylindrical wall is The cylindrical wall has the protrusion at an extending end thereof. Terminal connection structure.

3. 2. The terminal connection structure according to claim 1, The thickness adjusting unit is The seat portion is a separate or integral member. Terminal connection structure.

4. 2. The terminal connection structure according to claim 1, The first terminal is The first terminal has a cylindrical shape, and a cylindrical end portion of the first terminal is the first contact portion, The second terminal is The second terminal has a plate-like shape, and a plate surface portion of the second terminal is the second contact portion, The bolt of the fastener is The first terminal and the second terminal are fastened together with the first contact portion and the second contact portion in contact with each other by passing through the second terminal and screwing into the hollow portion of the first terminal. Terminal connection structure.

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