JP2017021914A - Terminal board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal board in which the contact between a first wire and a liquid gasket protruding from the gap between a terminal board main body and a cover body (or pedestal) can be prevented with certainty.SOLUTION: A terminal board which includes a connecting portion for electrically connecting a wire 13 as a first wire and a second wire, is fixed to a housing 11 as a pedestal having a pedestal opening portion 11B through which the wire 13 is inserted, includes a terminal board main body 17 which is formed of an insulating material and fixed to the housing 11, and a cover body 18 which is formed of an insulating material and covers the terminal board main body 17. The terminal board main body 17 includes a main body opening portion 26 which intercommunicates with the pedestal opening portion 11B and through which the wire 13 is inserted, and a main body side joint portion 30 and a back surface side joint portion 44 which are joined to the housing 11 and the cover body 18 through a liquid gasket G. A plate-like portion 27 is provided to the terminal board main body 17 so as to erect in the insertion direction of the wire 13.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a terminal block, and more particularly to an insulating structure of a terminal block in which a first wiring and a second wiring are electrically connected.

As a conventional technique of a terminal block, for example, as shown in FIG. 10, a terminal block 80 including a terminal block main body 81 and a cover body 82 that covers the terminal block main body 81 is known. The terminal block 80 is fixed to a metal pedestal 83 with bolts (not shown). The pedestal 83 is provided with an opening 85 through which the first wiring 84 is inserted. The terminal block main body 81 and the cover body 82 are joined with a liquid gasket G for sealing interposed between the terminal block main body 81 and the cover body 82. The terminal block body 81 has an opening 86 through which the three first wires 84 are inserted. A first wiring 84 is disposed in the space S formed by joining the terminal block main body 81 and the cover body 82, and the first wiring 84 passes through the opening 86 and then faces the connection portion 87. Is bent. The first wiring 84 and the second wiring 88 are electrically connected via a connection portion 87 provided in the space S.
By the way, as shown in FIG. 10, a part of the liquid gasket G interposed between the terminal block main body 81 and the cover body 82 is connected between the terminal block main body 81 and the cover body 82 by fastening bolts. It protrudes outward and inward of the base 80. The liquid gasket G that protrudes into the opening 86 may come into contact with the first wiring 84. In FIG. 10, the inward protruding portion of the liquid gasket G is indicated by Gd. The contact between the first wiring 84 and the round terminal attached to the first wiring 84 and the protruding portion Gd of the liquid gasket G causes a decrease in insulation between the first wiring 84 and the pedestal 83.

  As a prior art for preventing the liquid gasket from protruding, for example, an engine oil pan mounting structure disclosed in Patent Document 1 is known. In the engine oil pan mounting structure disclosed in Patent Document 1, the lower end contact surface of the ladder frame attached to the lower portion of the crankcase and the upper end contact surface of the outer peripheral flange formed on the light alloy cast oil pan And a bolt with a liquid gasket interposed therebetween. A stepped portion is formed on the upper end contact surface of the flange of the oil pan to accommodate an excess liquid gasket that protrudes along the inner edge by pressure contact.

  When attaching an oil pan to the ladder frame, apply a liquid gasket on the upper end contact surface of the flange, and then contact the lower end contact surface of the ladder frame. The lower end flange of the frame is tightened. By being tightened by the bolt, a part of the liquid gasket protrudes from the inside and outside of the oil pan from between the lower end contact surface of the ladder frame and the upper end contact surface of the oil pan. The surplus liquid gasket that protrudes from the upper end contact surface of the oil pan to the inside of the oil pan is held on the stepped portion and solidifies, so that it does not fall into the oil pan. Therefore, it is possible to prevent problems caused by the solidified excess liquid gasket being mixed into the oil.

Japanese Utility Model Publication No. 5-50053

  Although it is conceivable to apply the engine oil pan mounting structure disclosed in Patent Document 1 to the terminal block shown in FIG. 10, the protrusion of the liquid gasket still occurs depending on the application amount of the liquid gasket and the fastening force of the bolt. there is a possibility. In other words, even if the engine oil pan mounting structure disclosed in Patent Document 1 is applied to the terminal block shown in FIG. 10, there is a problem that the liquid gasket cannot be reliably protruded. In addition, to prevent with certainty refers to preventing with a considerably high accuracy.

  The present invention has been made in view of the above problems, and an object of the present invention is to reliably prevent contact between the liquid gasket and the first wiring protruding from between the terminal block main body and the cover body (or pedestal). It is to provide a terminal block that can be used.

  In order to solve the above-described problem, the invention according to claim 1 includes a connection portion that electrically connects the first wiring and the second wiring, and includes a pedestal opening through which the first wiring is inserted. A terminal block fixed to the pedestal, comprising a terminal block main body formed of an insulating material and fixed to the pedestal; and a cover body formed of an insulating material and covering the terminal block main body, the terminal The base body has a main body opening portion that communicates with the base opening portion and inserts the first wiring, and a joint portion that is joined to the base body and the cover body with a liquid gasket interposed therebetween, and the terminal The base body or the cover body is provided with a plate-like portion standing in the insertion direction of the first wiring.

  According to the first aspect of the present invention, since the terminal block body or the cover body is provided with the plate-like portion erected in the insertion direction of the first wiring, a part of the liquid gasket is fixed to the main body when the terminal block is fixed. It is prevented from protruding into the opening. Therefore, it is possible to reliably prevent the contact between the terminal block main body and the cover body, or the liquid gasket protruding from between the terminal block main body and the pedestal and the first wiring, and between the pedestal and the first wiring. It is possible to prevent a decrease in insulation.

  According to a second aspect of the present invention, in the terminal block according to the first aspect, the plate-like portion is integrally formed with the terminal block main body.

  According to invention of Claim 2, since the plate-shaped part is integrally formed in the terminal block main body, positioning of the terminal block main body with respect to a base using the plate-shaped part or positioning of the cover body with respect to a terminal block main body is carried out. Is possible.

  The invention according to claim 3 is the terminal block according to claim 2, wherein the plate-like portion extends toward the first wall portion extending toward the cover body and the pedestal opening. It has the 2nd wall part, It is characterized by the above-mentioned.

  According to the invention of claim 3, since the plate-like portion includes the first wall portion and the second wall portion, the terminal wall body and the cover body are secured by the first wall portion when the terminal block is fixed by bolt fastening. It is possible to prevent the liquid gasket from protruding into the main body opening from between the two and the second wall portion to prevent the liquid gasket from protruding from between the terminal block main body and the base into the main body opening.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to prevent reliably the contact with the liquid gasket and 1st wiring which protrude from between a terminal block main body and a cover body (or base).

It is a perspective view which shows schematic structure of the terminal block which concerns on 1st Embodiment. (A) is a disassembled perspective view of the terminal block which concerns on 1st Embodiment, (b) is a perspective view of the housing in (a). (A) is a top view of the terminal block main body in the terminal block which concerns on 1st Embodiment, (b) is CC line arrow directional view in (a). (A) is a bottom view of the cover body in the terminal block concerning a 1st embodiment, and (b) is a DD line directional view in (a). It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a perspective view of the terminal block main body which concerns on 2nd Embodiment. It is sectional drawing of the terminal block which concerns on 3rd Embodiment. It is a perspective view of the terminal block main body concerning other embodiments. It is sectional drawing which shows a prior art.

(First embodiment)
Hereinafter, the terminal block according to the first embodiment will be described with reference to FIGS. This embodiment is an example applied to a three-phase induction motor as an electric motor.
As shown in FIG. 1 and FIG. 2A, a terminal block 12 is provided in a housing 11 that forms an outline of the electric motor 10. The electric motor 10 of this embodiment is a three-phase induction motor.
A flat seat surface 11 </ b> A for attaching the terminal block 12 is formed on the upper surface of the housing 11. A part of the housing 11 functions as a base for the terminal block 12. As shown in FIG. 2B, a square base opening 11B is formed on the seat surface 11A. A plurality of screw holes 11C for fastening the terminal block 12 are formed in the seating surface 11A. A seat surface side joint 11D to which the terminal block 12 is joined is formed so as to surround the base opening 11B and the screw hole 11C. 1, 2A and 2B, the pedestal opening 11B side is the front side of the electric motor 10, and the opposite side of the pedestal opening 11B is the rear side of the electric motor 10. The direction perpendicular to each other is taken as the left-right direction. Moreover, let the up-down direction in FIG.1, FIG.2 (a) and FIG.2 (b) be the up-down direction of the electric motor 10. FIG.

In the present embodiment, a plurality of wires 13 attached to the electric motor 10 are drawn out from the pedestal opening 11 </ b> B of the housing 11. As shown in FIG. 2A, the plurality of wirings 13 are three-phase wirings of a wiring 13U, a wiring 13V, and a wiring 13W, and correspond to the first wiring. The wirings 13U, 13V, and 13W are connected to the terminal block 12. A round crimp terminal 14 is provided at each end of the plurality of wires 13.
On the other hand, a plurality of wirings 15 on the external connection side connected to an external device (for example, an inverter) are connected to the terminal block 12. A plurality of wirings 15 indicated by two-dot chain lines in FIG. 1 are three-phase wirings of a wiring 15U, a wiring 15V, and a wiring 15W, and correspond to a second wiring. The number of wirings 15 is the same as the number of wirings 13. A round crimp terminal 16 is provided at each end of the plurality of wires 15.

  Next, the terminal block 12 that electrically connects the plurality of wirings 13 and the plurality of wirings 15 will be described. As shown in FIG. 1, the terminal block 12 of the present embodiment is attached to the seat surface 11 </ b> A of the housing 11 so as to be positioned above the electric motor 10. As shown in FIG. 2A, the terminal block 12 includes a terminal block main body 17, a cover body 18, a connection bolt 19, a cylindrical relay terminal 20, a nut 21 as a fastening member, and the like. Note that the connection portion includes, for example, the configuration of connection bolts 19, relay terminals 20, and nuts 21. The number of connection bolts 19, relay terminals 20 and nuts 21 is the same as the number of wires 13 and 15.

  The terminal block body 17 is formed in a flat plate shape with an insulating material (for example, polyamide resin). In the terminal block body 17, the surface facing the cover body 18 is the front surface, and the surface facing the housing 11 is the back surface. As shown in FIG. 3A, the terminal block main body 17 of the present embodiment is formed with a front end edge 22 positioned on the front side of the electric motor 10 in a state of being attached to the housing 11. Further, the terminal block body 17 is formed with a pair of side end edges 23 and 24 that extend from both ends of the front end edge 22 in a direction orthogonal to the front end edge 22. One side edge 23 extends longer in the direction perpendicular to the front edge 22 than the other side edge 24. A rear end edge 25 connecting the side end edge 23 and the side end edge 24 is formed, and the rear end edge 25 is inclined by 45 ° with respect to the front end edge 22.

A rectangular body opening 26 communicating in the vertical direction is formed at a position surrounded by the front edge 22 and the side edges 23 and 24 of the terminal block body 17 and close to the front edge 22. . The main body opening 26 is formed to pass through the three-phase wirings 13U, 13V, and 13W, has the same size as the base opening 11B of the housing 11, and is provided so as to communicate with the base opening 11B. It has been.
The edge of the main body opening 26 on the front edge 22 side is a front edge 26A, the edge of the main body opening 26 facing the front edge 26A is a rear edge 26B, and the side edge 23 of the main body opening 26 is on the side edge 23 side. The edge of the main body opening 26 is the side edge 26D. The main body opening portion 26 includes a front edge portion 26A, a rear edge portion 26B, a side edge portion 26C, and a side edge portion 26D.

  A protruding portion 28 that protrudes from the surface is formed near the rear edge 25 and at a position away from the front edge 22. Three protrusions 28 are formed along the rear edge 25. A hexagonal bottomed hole 29 is formed in the protruding portion 28, and a part of the connecting bolt 19 can be inserted into the bottomed hole 29.

  A main body side joint portion 30 is formed on the peripheral portion of the terminal block main body 17 so as to surround the main body opening 26 and the plurality of protrusions 28. The main body side joining portion 30 is formed along the front end edge 22, the side end edges 23 and 24, and the rear end edge 25, and is connected in the circumferential direction. The main body side joint portion 30 represents a portion to be joined to the cover body 18. The main body side joint portion 30 is indicated by broken line hatching in FIG. In the state where the terminal block body 17 and the cover body 18 are joined, the body-side joining portion 30 is a portion where the liquid gasket G is interposed as shown in FIG. Further, a back surface side bonding portion 44 is formed on the surface (back surface) opposite to the surface on which the main body side bonding portion 30 is formed. The back surface side joint portion 44 is a portion that is joined to the seating surface side joint portion 11D of the housing 11 shown in FIG. In the state where the terminal block body 17 and the housing 11 are joined, the back side joining portion 44 is a portion where the liquid gasket G is interposed as shown in FIG. The terminal block body 17 includes a plurality of through holes 32 through which bolts 31 for fixing the terminal block body 17 to the seating surface 11 </ b> A of the housing 11 are inserted. The through hole 32 is formed along the side end edges 23 and 24 in the main body side joint portion 30.

  Plate-like portions 27 are formed at three edge portions of the main body opening 26, that is, the front edge portion 26A, the side edge portion 26C, and the side edge portion 26D. The plate-like portion 27 has a surface perpendicular to the plate surface of the terminal block body 17. The plate-like portion 27 has a plate-like shape and is erected in the insertion direction (vertical direction) of the wiring 13. The plate-like portion 27 is integrally formed with the terminal block main body 17. The plate-like portion 27 is made of the same material as the terminal block body 17. As shown in FIG. 3B, the plate-like portion 27 includes a first wall portion 27A and a second wall portion 27B. As shown in FIG. 5, the first wall portion 27 </ b> A extends toward the cover body 18 when the terminal block 12 is fixed to the housing 11. The second wall portion 27 </ b> B extends into the pedestal opening 11 </ b> B of the housing 11 when the terminal block 12 is fixed to the housing 11. The first wall portion 27A and the second wall portion 27B are connected to each other. Moreover, as shown to Fig.3 (a), 27 A of 1st wall parts have U shape in planar view. Although not shown, the second wall portion 27B has a U-shape when viewed from the back, like the first wall portion 27A.

  The first wall 27A and the second wall 27B are each formed at a predetermined height. The first wall portion 27A is set to a height such that the liquid gasket G interposed between the main body side joint portion 30 and the cover body side joint portion 37 gets over the first wall portion 27A and does not protrude into the main body opening 26. ing. The first wall 27A and the second wall 27B are set to a height that does not interfere with other components.

  The cover body 18 is formed of the same insulating material as the terminal block body 17. The outer peripheral edge of the cover body 18 corresponds to the shape of the terminal block main body 17. Specifically, as shown in FIG. 4A, the cover body 18 includes a front end edge 33 corresponding to the front end edge 22 of the terminal block main body 17 and a side end corresponding to the side end edge 23 of the terminal block main body 17. An edge 34, a side edge 35 corresponding to the side edge 24 of the terminal block body 17, and a rear edge 36 corresponding to the rear edge 25 of the terminal block body 17 are formed. A cover body side joint portion 37 to be joined to the main body side joint portion 30 of the terminal block main body 17 is formed at the peripheral edge portion of the cover body 18. The cover body side joint portion 37 is indicated by broken line hatching in FIG. A plurality of through holes 38 through which the bolts 31 are inserted are formed in the cover body side joint portion 37.

The cover body 18 is positioned higher than the cover body side joint portion 37 on the inner side of the peripheral wall portion 39 and the peripheral wall portion 39 rising from the cover body side joint portion 37 so that a space is formed inside the cover body side joint portion 37. A top wall 40 is formed.
As shown in FIG. 4B, in the state where the cover body side joint portion 37 of the cover body 18 and the body side joint portion 30 of the terminal block body 17 are joined together, the terminal block body 17 and the cover body 18 are Is formed with a space Q that allows the wirings 13U, 13V and 13W to be arranged.

  A through hole 41 is formed at a position near the rear end edge 36 of the cover body 18 and away from the front end edge 33. Three through holes 41 are formed in the top wall portion 40 along the rear edge 36. The through hole 41 is a circular hole through which the relay terminal 20 is inserted. In a state where the cover body 18 is joined so as to be on the upper side of the terminal block main body 17, the center of the through hole 41 coincides with the center of the bottomed hole 29 of the terminal block main body 17. Around the through hole 41, a protruding portion 42 that protrudes in a cylindrical shape from the outer wall surface of the top wall portion 40 is formed.

  A plate-shaped partition portion 43 is formed on the inner wall surface of the top wall portion 40 of the cover body 18. The partition part 43 is formed in two places so that the space part Q may be divided into three. The longitudinal direction of the partition portion 43 is a direction orthogonal to the front end edge 33. The end portion on the rear end edge 36 side of the partition portion 43 reaches the peripheral wall portion 39 on the rear end edge 36 side so as to be positioned between the mutually adjacent through holes 41. The end portion on the front end edge 33 side of the partition portion 43 does not reach the peripheral wall portion 39 on the front end edge 33 side, and is formed with a gap between the end portion 33 and the peripheral wall portion 39 on the front end edge 33 side. The partition 43 ensures insulation between adjacent wirings in the space Q (between the wiring 13U and the wiring 13V and between the wiring 13V and the wiring 13W).

Next, the procedure for assembling the terminal block 12 will be described.
First, as shown in FIGS. 5 and 6, the terminal block body 17 is placed on the seating surface 11 </ b> A of the housing 11, and between the back surface side joint portion 44 of the terminal block body 17 and the seating surface side joint portion 11 </ b> D of the housing 11. And a liquid gasket G as a sealing member. After the liquid gasket G is applied to the back surface side joint portion 44, the terminal block body 17 is placed on the seat surface 11A. At this time, the 2nd wall part 27B in the plate-shaped part 27 extended in the edge part of the main body opening part 26 contact | abuts the inner wall surface of the base opening part 11B formed in the seat surface 11A. That is, when the outer peripheral surface of the second wall portion 27B and the inner wall surface of the pedestal opening portion 11B abut, the terminal block body 17 is positioned with respect to the housing 11 of the electric motor 10.

  Wirings 13U, 13V, and 13W attached to the electric motor 10 are drawn upward through the base opening 11B and inserted into the main body opening 26 of the terminal base body 17. As shown in FIG. 2A, the wirings 13U, 13V, and 13W are bent so as to be parallel to the seating surface 11A toward the rear after passing through the body opening 26. Then, the crimp terminals 14 provided at the ends of the wirings 13U, 13V, and 13W are respectively locked to the shaft portions of the connection bolts 19 inserted into the bottomed holes 29 of the terminal base body 17.

  After the relay terminals 20 are screwed into the shaft portions of the connection bolts 19 and tightened, the cover body 18 is overlaid on the terminal base body 17 from above. At this time, after the liquid gasket G is applied to the main body side joint portion 30 of the terminal block body 17 or the cover body side joint portion 37 of the cover body 18, the cover body 18 is overlaid on the terminal base body 17. That is, as shown in FIGS. 5 and 6, the terminal block main body 17 and the cover body 18 are joined together with the liquid gasket G as a seal member interposed between the main body side joining portion 30 and the cover body side joining portion 37. When the cover body 18 is overlaid on the terminal block main body 17 and the main body side joining portion 30 and the cover body side joining portion 37 are joined, the upper end of the first wall portion 27A extending upward in the plate-like portion 27 is It abuts against the inner wall surface of the peripheral wall portion 39 of the cover body 18. As a result, the cover body 18 is positioned with respect to the terminal block body 17.

  When the cover body 18 is overlaid on the terminal base body 17, each relay terminal 20 is inserted through the corresponding through hole 41. Then, the cover body 18 and the terminal block body 17 are fixed to the seat surface 11 </ b> A of the housing 11 by inserting the bolt 31 into the through holes 38 and 32 and screwing them into the screw holes 11 </ b> C.

  The crimp terminals 16 provided at the ends of the wiring 15U, 15V, 15W on the external connection side are engaged with the shafts of the connection bolts 19 protruding from the corresponding relay terminals 20, and the nuts 21 are connected. Screw in the bolt 19 and tighten. Thus, the wirings 13U, 13V, and 13W attached to the electric motor 10 and the external connection side wirings 15U, 15V, and 15W are electrically connected through the connection portion.

  By the way, when the terminal block main body 17 and the cover body 18 are fixed to the seat surface 11A by the plurality of bolts 31, the liquid interposed between the terminal block main body 17 and the cover body 18 and between the housing 11 and the terminal block main body 17 is used. A part of the gasket G may protrude to the outside and the inside of the terminal block 12.

  However, a plate-like portion 27 is formed at the edge of the main body opening 26 so as to stand in the insertion direction of the wiring 13 and extend in the vertical direction, so that the liquid gasket G is connected to the main body opening 26. Protrusion is prevented. That is, the first wall portion 27A extending toward the upper cover body 18 prevents the liquid gasket G interposed between the main body side joint portion 30 and the cover body side joint portion 37 from protruding into the main body opening portion 26. The More specifically, the protrusion of the liquid gasket G to the front edge portion 26A, the side edge portion 26C, and the side edge portion 26D of the main body opening 26 is prevented by the first wall portion 27A. Further, the main body of the liquid gasket G interposed between the rear surface side joint portion 44 of the terminal base body 17 and the seat surface side joint portion 11D of the housing 11 by the second wall portion 27B extending into the base opening portion 11B of the housing 11. The protrusion to the opening 26 is prevented. Wirings 13U, 13V, 13W attached to the electric motor 10 are inserted into the main body opening 26, but the liquid gasket G is prevented from protruding into the main body opening 26 by the first wall 27A and the second wall 27B. By doing so, the contact between the liquid gasket G and the wirings 13U, 13V, 13W is reliably prevented. Accordingly, electrical continuity between the liquid gasket G and the wirings 13U, 13V, and 13W is prevented, and insulation between the housing 11 and the wirings 13U, 13V, and 13W is maintained.

  As shown in FIGS. 5 and 6, the first wall 27 </ b> A has a liquid gasket G interposed between the main body side joint 30 and the cover body side joint 37 over the first wall 27 </ b> A to the main body opening 26. The height is set so as not to protrude. Therefore, the liquid gasket G that protrudes from the main body side joining portion 30 stays in the gap between the first wall portion 27A and the peripheral wall portion 39 of the cover body 18, gets over the first wall portion 27A, and leaks into the space portion Q. There is no. Further, the first wall portion 27A and the second wall portion 27B are set to a height that does not interfere with other parts, so that the first wall portion 27A and the second wall portion 27B and the electric motor 10 Interference with other electric parts or mechanical parts is avoided, and the terminal block body 17 and the cover body 18 are smoothly fixed to the housing 11.

  Since the liquid gasket G is interposed between the main body side joint portion 30 and the cover body side joint portion 37 and between the back surface side joint portion 44 and the seat surface side joint portion 11D, it is formed between the terminal block main body 17 and the cover body 18. The airtightness of the space portion Q is improved, and water or the like is prevented from entering the space portion Q from the outside.

According to the terminal block 12 of this embodiment, there exist the following effects.
(1) A plate-like portion 27 is formed on the edge of the main body opening 26 in the terminal block main body 17 so as to stand upright in the insertion direction of the wiring 13 and has a surface perpendicular to the plate surface of the terminal block main body 17. Accordingly, the terminal base body 17 and the cover body 18 are connected to each other by interposing the liquid gasket G between the main body side joint portion 30 and the cover body side joint portion 37 and between the back surface side joint portion 44 and the seat surface side joint portion 11D. When the bolt 31 fixes the seat surface 11A, the liquid gasket G is prevented from protruding to the main body opening 26. That is, the first wall portion 27A extending toward the cover body 18 prevents the liquid gasket G interposed between the main body side joint portion 30 and the cover body side joint portion 37 from protruding into the main body opening portion 26. Further, the second wall portion 27B extending into the base opening 11B of the housing 11 prevents the liquid gasket G interposed between the back surface side joint portion 44 and the seat surface side joint portion 11D from protruding into the main body opening portion 26. Is done. Therefore, it is possible to reliably prevent contact between the terminal base body 17 and the cover body 18 or the liquid gasket G protruding from between the terminal base body 17 and the housing 11 and the first wiring (wirings 13U, 13V, 13W). It is possible to prevent a decrease in insulation between the housing 11 and the first wiring.

(2) The second wall portion 27B of the plate-like portion 27 abuts against the inner wall surface of the pedestal opening 11B formed on the seat surface 11A, so that the terminal block body 17 can move in the front-rear direction with respect to the housing 11 of the electric motor 10 and Positioning in the left-right direction can be performed. Further, when the cover body 18 is overlapped with the terminal block main body 17 and the main body side joining portion 30 and the cover body side joining portion 37 are joined, the first wall portion 27A extending upward in the plate-like portion 27 is formed. When the upper end is in contact with the inner wall surface of the peripheral wall portion 39 of the cover body 18, the cover body 18 can be positioned with respect to the terminal block body 17. Therefore, when the terminal block 12 is fixed to the housing 11, it is possible to prevent the positional displacement of the cover body 18 with respect to the terminal block body 17 and the positional displacement of the terminal block body 17 with respect to the housing 11. Can be suppressed.

(3) Out of the four edge portions in the main body opening 26, three edge portions (front edge portion 26A, side edge portion 26C, and side) that directly contact the main body side bonding portion 30 (or the back surface side bonding portion 44). Since the plate-like portion 27 (the first wall portion 27A and the second wall portion 27B) is provided on the edge portion 26D), it is possible to reliably prevent the liquid gasket G from protruding to the main body opening portion 26. .

(4) A high voltage is applied to the wirings 13U, 13V, and 13W, and a high current flows, which may cause the wirings 13U, 13V, and 13W to discharge to the wall surface of the housing 11. However, since the first wall portion 27A and the second wall portion 27B extend in the vertical direction at the edge of the main body opening 26, the insulation between the wirings 13U, 13V, 13W and the housing 11 is enhanced, and the main body It is possible to prevent discharge of the wirings 13U, 13V, and 13W arranged in the opening 26 to the wall surface of the housing 11.

(5) Since the liquid gasket G is interposed between the main body side joint portion 30 and the cover body side joint portion 37 and between the back surface side joint portion 44 and the seat surface side joint portion 11D, between the terminal block main body 17 and the cover body 18. It is possible to improve the airtightness of the formed space portion Q and to prevent water or the like from entering the space portion Q from the outside.

(Second Embodiment)
Next, a terminal block according to a second embodiment will be described with reference to FIG.
In this embodiment, the shape of the plate-like portion 27 in the first embodiment is changed, and other configurations are common.
Therefore, here, for convenience of explanation, some of the reference numerals used in the previous explanation are used in common, explanation of common configurations is omitted, and only the changed parts are explained.

  As shown in FIG. 7, the terminal block of the second embodiment includes a terminal block body 50. A main body opening 51 is formed in the terminal block main body 50. A plate-like portion 52 is provided at the edge of the main body opening 51, and the plate-like portion 52 includes a first wall portion 52A and a second wall portion 52B. The first wall 52A extending toward the cover body 18 (not shown) extends only to the side edge 51C and the side edge 51D, and does not extend to the front edge 51A. The 2nd wall part 52B extended in the base opening part 11B of the housing 11 which is not illustrated is extended in 51 A of front edge parts, the side edge part 51C, and the side edge part 51D similarly to 1st Embodiment. .

  In the second embodiment, the bonding area of the main body side bonding portion 53 with the cover body side bonding portion 37 is larger on the side edge portion 51C side and the side edge portion 51D side than on the front edge portion 51A side. Therefore, the protrusion of the liquid gasket G to the main body opening 51 is more on the side edge 51C side and the side edge 51D side than on the front edge 51A side. Accordingly, the first wall portion 52A extends to the side edge portion 51C and the side edge portion 51D where the liquid gasket G has a large protrusion, and the first wall portion 52A extends to the front edge portion 51A where the liquid gasket G has a small protrusion. Since it is not carried out, it is possible to provide a plate-like part in a highly necessary part.

(Third embodiment)
Next, a terminal block 60 according to the third embodiment will be described with reference to FIG.
In this embodiment, the plate-like portion is provided in the cover body in place of the terminal block main body, and other configurations are common.
Therefore, here, for convenience of explanation, some of the reference numerals used in the previous explanation are used in common, explanation of common configurations is omitted, and only the changed parts are explained.

  As shown in FIG. 8, the terminal block 60 of the third embodiment includes a terminal block main body 64 and a cover body 61. The terminal block main body 64 is formed with a main body opening 65 through which the wirings 13U, 13V, and 13W are inserted. The cover body 61 includes a peripheral wall portion 62 and a top wall portion 66. A plate-like portion 63 extending in the direction opposite to the top wall portion 66 is provided on the peripheral wall portion 62 of the cover body 61. When the cover body 61 is overlapped on the terminal block body 64 and fixed to the seat surface 11A of the housing 11, the plate-like portion 63 is fitted into the edge of the body opening 65 of the terminal block body 64 and is formed on the seat surface 11A. It contacts the inner wall surface of the pedestal opening 11B.

  In the third embodiment, the plate-like portion 63 can prevent the liquid gasket G from protruding into the main body opening 65, and the terminal block main body 64 and the cover body 61 can be positioned with respect to the housing 11.

The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist of the invention. For example, the following modifications may be made.
In the first embodiment, the plate-like portion 27 has been described as including the first wall portion 27A and the second wall portion 27B extending in the vertical direction, but the second wall portion 27B is not formed. Instead, only the first wall portion 27A may be formed.
○ In the first to third embodiments, the three-phase wirings 13U, 13V, 13W attached to the electric motor 10 pass through the body openings 26, 51, 65 and then toward the connection portion 11A. Although described as being bent so as to be parallel, the wirings 13U, 13V, 13W may extend in the vertical direction as they are after passing through the body openings 26, 51, 65. In this case, the connection portions with the wirings 15U, 15V, and 15W on the external connection side are positioned upward in the vertical direction, and a plate-like portion can be provided on all the edges of the main body opening.
In the first embodiment, the terminal block main body 17 and the cover body 18 have been described as trapezoidal shapes in plan view, but may be rectangular shapes. That is, as shown in FIG. 9, the terminal block body 70 includes a front end edge 71, a side end edge 72, a side end edge 73, and a rear end edge 74 so that the front end edge 71 and the rear end edge 74 are parallel to each other. Is formed. The three projecting portions 75 formed along the rear end edge 74 are formed at positions equidistant from the main body opening 76. Although not shown, the cover body has an outer shape equivalent to that of the terminal block main body 70.
○ In the first to third embodiments, the first wiring and the second wiring correspond to the three phases and each has three, but the first wiring and the second wiring applied to the terminal block are limited to three. The number is not limited and may be plural, for example, two or four.
In the first to third embodiments, it has been described that the main body opening is formed in a square shape. However, the main body opening is not limited to a square shape, and may have any shape.
In the first to third embodiments, the first wiring and the second wiring are described as being indirectly connected using the relay terminal. However, the first wiring and the second wiring are not used without using the relay terminal. May be connected directly.
In the first to third embodiments, the three-phase induction motor is exemplified as the electric motor, but the type of the electric motor is not limited. As the electric motor, for example, a synchronous electric motor (generator) may be used. Moreover, you may apply a terminal block to electric power apparatuses other than an electric motor.

10 Electric motor 11 Housing (pedestal)
11A Seat surface 11B Base opening 11D Seat surface side joint portion 12, 60 Terminal block 13 (13U, 13V, 13W) Wiring (first wiring)
15 (15U, 15V, 15W) Wiring (second wiring)
17, 50, 64 Terminal block main body 18, 61 Cover body 26, 51, 65 Main body opening 27, 52, 63 Plate-like portion 27A, 52A First wall portion 27B, 52B Second wall portion 30, 53 Main body side joint portion 37 Cover body side joint 44 Back side joint G Liquid gasket Q Space

Claims (3)

A terminal block having a connection part for electrically connecting the first wiring and the second wiring, and fixed to a pedestal having a pedestal opening through which the first wiring is inserted;
A terminal block body formed of an insulating material and fixed to the pedestal;
A cover body that is formed of an insulating material and covers the terminal block body,
The terminal block body communicates with the pedestal opening, and a body opening through which the first wiring is inserted;
A joint portion joined to the pedestal and the cover body with a liquid gasket interposed therebetween,
A terminal block comprising a plate-like portion standing on the terminal block main body or the cover body in the insertion direction of the first wiring.   The terminal block according to claim 1, wherein the plate-like portion is integrally formed with the terminal block main body.   The said plate-shaped part is equipped with the 1st wall part extended toward the said cover body, and the 2nd wall part extended toward the said base opening part, The Claim 2 characterized by the above-mentioned. Terminal block.

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