JP2017059300A - Terminal block device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal block device which can assemble electric wiring without considering the bending state of the wiring.SOLUTION: A terminal block device 12 comprises: a terminal block body 35 formed of an insulation material; and a terminal part arranged on the terminal block body 35, which electrically connects a first wiring and a second wiring. The terminal block body 35 is fixed to a front cover 22 having a space 28 into which a wiring 31 is inserted, and the wiring 31 is bent from the space 28 toward the terminal part. The terminal block body 35 comprises a first partition wall plate 45 which is integrally formed with the terminal block body 35 and interposed between the wiring 31 and the front cover 22 in an extending direction of the wiring 31 from the space 28 toward the terminal part.SELECTED DRAWING: Figure 3

Description

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

  As a prior art related to the terminal block device, for example, an electric motor disclosed in Patent Document 1 can be cited. The electric motor disclosed in Patent Document 1 includes a motor body having a rotor and a stator. The motor main body covers a rotor fixed to the shaft, a cylindrical stator disposed around the rotor, an end bracket that covers one side of the stator, and the other side of the stator. And an end bracket. An external connection terminal having a plurality of lead wires is connected to one side portion of the stator winding of the stator. The electric motor includes a plurality of terminal blocks to which each external connection terminal is connected, a terminal cover that covers each external connection terminal and each terminal block, and each terminal block and terminal cover for attaching the terminal block and the terminal cover to the motor body. And a mounting bracket. Each external connection terminal is taken out from the stator winding so as to extend in an approximately L shape toward an end bracket that covers the other side of the stator.

  Moreover, as another prior art, the manufacturing method and motor of the motor disclosed by patent document 2 can be mentioned, for example. In the motor disclosed in Patent Document 2, the first end bracket is joined to the rear end of the cylindrical frame. The first end bracket closes substantially the entire opening on the rear end side of the frame. An upper opening portion of the first end bracket is opened toward the frame side to form a terminal block accommodation opening. A terminal block is fixed to the upper outer surface on the rear end side of the frame. The terminal block is formed by inserting a plurality of bolts into a terminal block main body formed in a rectangular parallelepiped shape from a synthetic resin material, and the tip of each bolt protrudes from the upper end surface of the terminal block main body. The rear end surface of the terminal block body faces the first end bracket from the terminal block receiving port.

  From the first coil end portion of the stator core, lead portions of the stator windings of the respective phases are drawn out. A round terminal as a connection terminal is fixed to the tip of each lead portion. Each lead portion is drawn out from the outer peripheral surface of the first coil end portion toward the radially outer side of the first coil end portion, and is bent and deformed in an arc shape toward the terminal block. Each of the round terminals of each lead portion is fixed to the terminal block with the bolt inserted. The terminal block and each lead part are electrically connected via a round terminal.

JP 2005-318742 A JP 2010-74958 A

  In Patent Documents 1 and 2, the wiring (lead wire or lead portion) of each phase drawn from the stator is bent into a substantially L shape (or arc shape) and connected to the terminal block. For this reason, depending on the bending condition of the wiring, the wiring may approach the end bracket, and there is a possibility that a sufficient insulation distance between the wiring and the end bracket cannot be secured. In order to secure a sufficient insulation distance between the wiring and the end bracket, it is necessary to strictly set the bending of the wiring when assembling the wiring to the terminal block, and the wiring assembling work becomes complicated. There is a problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal block device capable of assembling wiring to a terminal block without being aware of the bending state of the wiring.

  In order to solve the above problems, the present invention comprises a terminal block formed of an insulating material, and a terminal portion provided on the terminal block and electrically connecting the first wiring and the second wiring, The terminal block is a terminal block device fixed to a pedestal having a space portion through which the first wiring is inserted, and the first wiring is bent from the space portion toward the terminal portion. Includes a partition plate integrally formed with the terminal block, and the partition plate extends in the extending direction of the first wiring from the space portion toward the terminal portion, and the first wiring and the pedestal in the space portion. It is characterized by being interposed between and.

  In the present invention, since the partition plate is interposed between the first wiring and the base in the extending direction of the first wiring from the space portion to the terminal portion, the first wiring and the base are physically separated by the partition plate. Be isolated. Therefore, the insulation between the first wiring and the pedestal can be reliably maintained regardless of the bending state of the first wiring. As a result, the wiring to the terminal block can be assembled without being conscious of the bending state of the wiring.

In the terminal block device, the terminal block includes a terminal block main body fixed to the base and having an opening through which the first wiring passes, and a cover body covering the terminal block main body, and the partition wall The board may be formed integrally with the terminal block body.
In this case, the partition plate is inserted into the space along the pedestal, thereby facilitating positioning of the terminal block body with respect to the fixed position of the pedestal.

In the terminal block device, the partition plate may be a first partition plate, the terminal block may include a second partition plate formed integrally with the terminal block, The second partition plate may be interposed between the first wiring and the base in the space portion in a direction orthogonal to the extending direction of the first wiring from the space portion to the terminal portion. Good.
In this case, since the second partition plate is interposed between the first wiring and the pedestal in the direction orthogonal to the extending direction of the first wiring from the space portion to the terminal portion, the first wiring and the pedestal are It is physically isolated by the second partition plate. The first wiring and the pedestal in the direction orthogonal to the extending direction of the first wiring from the space portion to the terminal portion are physically separated by the second partition plate.

In the terminal block device, the first wiring is a wiring connected from the electric motor to the terminal block, and the second wiring is a wiring connected from the terminal block to an external device. Also good.
In this case, even if the electric motor and the terminal block are arranged close to each other, the insulation between the first wiring and the pedestal is ensured regardless of the bending of the first wiring connected from the electric motor to the terminal block. It can be kept and is effective.

  ADVANTAGE OF THE INVENTION According to this invention, the terminal block apparatus which can assemble | attach the wiring to a terminal block without being conscious of the bending condition of wiring can be provided.

It is a perspective view of the electric motor to which the terminal block device concerning a 1st embodiment is applied. It is a disassembled perspective view of the terminal block apparatus concerning a 1st embodiment. (A) is a longitudinal cross-sectional view of the principal part of the electric motor to which the terminal block apparatus which concerns on 1st Embodiment is applied, (b) is an AA arrow directional view of (a). It is a perspective view of the terminal block main body of the terminal block apparatus which concerns on 1st Embodiment. (A) is a top view of the terminal block main body which concerns on 1st Embodiment, (b) is a BB arrow directional view in (a), (c) is a CC line in (a). It is an arrow view. (A) is a top view of the cover body which concerns on 1st Embodiment, (b) is the DD arrow directional view in (a). It is a disassembled perspective view of the terminal block apparatus which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view of the terminal block apparatus which concerns on 2nd Embodiment.

(First embodiment)
Hereinafter, the terminal block device according to the first embodiment will be described with reference to the drawings. This embodiment is an example applied to a three-phase induction motor as an electric motor.

  The electric motor 10 shown in FIGS. 1 and 2 includes a motor main body 11 and a terminal block device 12 provided on the motor main body 11. The electric motor 10 of this embodiment is a three-phase induction motor. As shown in FIG. 3A, the motor main body 11 includes a stator 13 and a rotor 14 that rotates inside the stator 13. As shown in FIG. 4, a support portion 15 for supporting and fixing a part of the terminal block device 12 is provided on the outer peripheral surface of the stator 13. A screw hole 16 is formed in the support portion 15. The stator 13 includes a stator core 17 and a coil 18, and coil ends of the coil 18 are formed at both ends of the stator core 17. In FIG. 3A, only the coil end 19 at one end is shown, and the coil end at the other end is not shown. The rotor 14 includes a rotor core 20 and a rotation shaft 21 that is fixed through the center of the rotor core 20.

  As shown in FIGS. 1 and 2, a front cover 22 that covers one coil end 19 is provided at one end of the stator 13, and a rear cover 23 that covers the coil end is provided at the other end. Yes. The front cover 22 and the rear cover 23 are fixed to the stator 13 by through bolts 24. As shown in FIG. 3A, the rotary shaft 21 of the rotor 14 is supported on the front cover 22 via a bearing 25, and the end of the rotary shaft 21 protrudes from the front cover 22 to the outside. An end portion of the rotating shaft 21 protruding from the front cover 22 is an output shaft portion. A rotating shaft 21 of the rotor 14 is supported on the rear cover 23 via a bearing (not shown). The axis P direction of the rotating shaft 21 coincides with the horizontal direction.

  In the present embodiment, the front cover 22 corresponds to a pedestal that is a fixing destination of the terminal block device 12. The upper surface of the front cover 22 is a support surface that supports the terminal block device 12. As shown in FIG. 4, a plurality of screw holes 27 into which bolts 26 for fixing the terminal block device 12 are screwed are formed on the upper surface of the front cover 22. As shown in FIGS. 3A and 3B, the front cover 22 is formed with a space portion 28 that penetrates from the top of the front cover 22 to the coil end 19. The space 28 is a space through which the wiring 31 on the electric motor 10 side described below is inserted. In the present embodiment, the space portion 28 is formed by being cut out so as to be recessed from the rear cover 23 side of the front cover 22 (see FIG. 4). As shown in FIGS. 3A and 3B, the front cover 22 includes a front wall 29 that faces the space 28 in the axial direction of the rotary shaft 21 and a width orthogonal to the axial direction of the rotary shaft 21. Side walls 30 located on both sides of the space 28 in the direction.

  In the present embodiment, a plurality of wires 31 on the electric motor 10 side are drawn out from the coil end 19 on the front cover 22 side. As shown in FIGS. 2 and 4, the plurality of wirings 31 are three-phase wirings of a U-phase wiring 31U, a V-phase wiring 31V, and a W-phase wiring 31W, and correspond to the first wiring. U-phase wiring 31U, V-phase wiring 31V and W-phase wiring 31W are connected to terminal block device 12. A round crimp terminal 32 is provided at each end of the plurality of wires 31. Specifically, a crimp terminal 32U is provided at the end of the U-phase wiring 31U, a crimp terminal 32V is provided at the end of the V-phase wiring 31V, and a crimp terminal 32W is provided at the end of the W-phase wiring 31W. Is provided. On the other hand, a plurality of wires 33 on the external connection side connected to an external device (for example, an inverter) are connected to the terminal block device 12. As shown in FIG. 1, the plurality of wirings 33 are three-phase wirings of a U-phase wiring 33U, a V-phase wiring 33V, and a W-phase wiring 33W, and correspond to a second wiring. The number of wirings 33 is the same as the number of wirings 31. A round crimp terminal 34 is provided at each end of the plurality of wires 33. Specifically, a crimp terminal 34U is provided at the end of the U-phase wiring 33U, a crimp terminal 34V is provided at the end of the V-phase wiring 33V, and a crimp terminal 34W is provided at the end of the W-phase wiring 33W. Is provided.

  Next, the terminal block device 12 that electrically connects the plurality of wirings 31 and the plurality of wirings 33 will be described. As shown in FIG. 1, the terminal block device 12 of the present embodiment is attached to the front cover 22 and the support portion 15 of the stator 13 by fastening bolts 26 so as to be positioned above the electric motor 10. As shown in FIG. 2, the terminal block device 12 includes a terminal block main body 35, a cover body 36, a bolt 37, a cylindrical relay terminal 38, and a nut 39. The terminal block main body 35 and the cover body 36 of this embodiment are equivalent to a terminal block. The number of relay terminals 38, bolts 37 and nuts 39 is the same as the number of wires 31 and 33. Further, the bolt 37, the relay terminal 38, and the nut 39 formed of a conductive material correspond to a terminal portion that electrically connects the wiring 31 and the wiring 33 in the terminal block device 12.

  The terminal block body 35 is formed in a flat plate shape with an insulating material (for example, polyamide resin). As shown in FIG. 5A, the terminal block main body 35 of the present embodiment is formed with a front edge 40 positioned on the front cover 22 side in a state of being attached to the electric motor 10. In addition, the terminal block main body 35 is formed with a pair of side end edges 41 and 42 that extend from both ends of the front end edge 40 in a direction orthogonal to the front end edge 40. One side edge 41 extends longer in the direction perpendicular to the front edge 40 than the other side edge 42. A rear end edge 43 connecting the side end edge 41 and the side end edge 42 is formed, and the rear end edge 43 is inclined by 45 ° with respect to the front end edge 40. The front end edge 40, the side end edges 41 and 42, and the rear end edge 43 form the outer peripheral edge of the terminal block main body 35. In the vicinity of the outer peripheral edge of the terminal block main body 35, a joining portion that joins the cover body 36 is formed.

  A rectangular opening 44 is formed at a position near the front end edge 40 of the terminal block main body 35 and away from the rear end edge 43. Opening 44 is formed to pass U-phase wiring 31U, V-phase wiring 31V, and W-phase wiring 31W. As shown in FIGS. 5B and 5C, the first partition plate 45 and the second partition plate 46 are formed on the back surface of the terminal block main body 35 so as to follow a part of the opening 44. Is provided. The first partition plate 45 and the second partition plate 46 are formed integrally with the terminal block body 35 and are formed so as to protrude from the back surface of the terminal block body 35. The first partition plate 45 is formed on the side on the front edge 40 side among the four sides of the opening 44. The second partition plate 46 is formed on each of the four sides of the opening 44 on the side edge 41, 42 side.

  In the present embodiment, the first partition plate 45 and the second partition plate 46 are integrally formed, and are inserted into the space 28 when the terminal block body 35 is fixed to the front cover 22. The first partition plate 45 is interposed between the first wiring 31 and the front wall 29 of the front cover 22 in the extending direction of the wiring 31 from the space portion 28 to the terminal portion, It has a function of preventing contact with the wiring 31. As shown in FIG. 3A, the wiring 31 includes a coil side portion that extends from the coil end 19 toward the radially outer side of the rotating shaft 21, a bent portion that is bent, and a terminal side portion that extends from the bent portion toward the terminal portion. ,have. The extending direction is parallel to the terminal side portion from the bent portion toward the terminal portion. The second partition plate 46 is interposed between the first wiring 31 and the front cover 22 in a direction orthogonal to the extending direction of the wiring 31 from the space portion 28 toward the terminal portion, and the side wall 30 of the front cover 22. It has a function of preventing contact with the wiring 31. The extending direction is parallel to the terminal side portion from the bent portion toward the terminal portion, and the second partition plate 46 is parallel to the terminal side portion in the wiring 31. In the present embodiment, the first partition plate 45 and the second partition plate 46 cover the wiring 31 from three directions on both sides of the terminal side portion extending in the extending direction of the wiring 31 and on the bending side portion side of the wiring 31.

  A raised portion 47 having a raised surface is formed near the rear end edge 43 of the terminal block body 35 and away from the front end edge 40. Three raised portions 47 are formed along the rear edge 43. A hexagonal bottomed hole 48 is formed in the raised portion 47, and a part of the bolt 37 can be inserted into the bottomed hole 48. Each bottomed hole 48 is arranged along a rear end edge 43 inclined by 45 ° with respect to the front end edge 40. The terminal block body 35 includes a through hole 49 through which the bolt 26 for attaching the terminal block body 35 to the electric motor 10 is inserted. The through hole 49 is formed along the side end edges 41 and 42 at the joint portion.

  The cover body 36 is formed of the same insulating material as the terminal block body 35. The outer peripheral edge of the cover body 36 corresponds to the shape of the terminal block main body 35. Specifically, as shown in FIG. 6A, the cover body 36 is formed with a front edge 50 corresponding to the front edge 40 of the terminal block body 35. The cover body 36 is formed with a side edge 51 corresponding to the side edge 41 of the terminal block body 35 and a side edge 52 corresponding to the side edge 42 of the terminal block body 35. Further, the cover body 36 is formed with a rear end edge 53 corresponding to the rear end edge 43 of the terminal block main body 35. In the vicinity of the outer peripheral edge of the cover body 36, a joint portion to be joined to the terminal block main body 35 is formed. The cover body 36 is formed with a peripheral wall portion 54 that rises from the joint portion and a ceiling wall portion 55 that is higher than the joint portion inside the peripheral wall portion 54 so that a space is formed inside the joint portion. . Through holes 56 and 57 through which the bolts 26 are inserted are formed in the joint portion.

  As shown in FIG. 5B, in a state where the joint portion of the cover body 36 and the joint portion of the terminal base body 35 are joined together, the U-phase wiring 33U is provided between the terminal base body 35 and the cover body 36. Thus, a space A in which the V-phase wiring 33V and the W-phase wiring 33W can be arranged is formed. Further, the inner wall surface of the top wall portion 55 of the cover body 36 faces the terminal block main body 35. In the terminal block body 35, the surface on the cover body 36 side excluding the joint portion and the opening 44 corresponds to a facing surface facing the inner wall surface of the top wall portion 55.

  A through hole 58 is formed at a position near the rear end edge 53 of the cover body 36 and away from the front end edge 50. The through hole 58 is a circular hole through which the relay terminal 38 is inserted. In a state where the cover body 36 is joined so as to be on the upper side of the terminal block main body 35, the center of the through hole 58 coincides with the center of the bottomed hole 48 of the terminal block main body 35, and the through hole 58 and the bottomed hole 48 are aligned. The axis is in the vertical direction. Three through holes 58 are formed corresponding to the number of the bottomed holes 48. A thick portion 59 is formed around the through hole 58 so as to protrude in a cylindrical shape from the outer wall surface of the top wall portion 55. The thick portion 59 is formed with an annular top surface 60 that is orthogonal to the through direction of the through hole 58.

  A plate-shaped insulating partition 61 is formed on the inner wall surface of the top wall 55 of the cover body 36. The insulating partition 61 is formed at two locations so that the space A is divided into three. The longitudinal direction of the insulating partition 61 is a direction orthogonal to the front edge 50. The end of the insulating partition 61 on the rear end edge 53 side reaches the joint so as to be positioned between the adjacent through holes 58. The end of the insulating partition 61 on the front end edge 50 side does not reach the joint. Insulation partition 61 ensures insulation between adjacent wires in space A (between U-phase wire 33U and V-phase wire 33V, and between V-phase wire 33V and W-phase wire 33W).

  The bolt 37 is a hexagon bolt having a shaft portion provided with a male screw and a head portion connected to an end portion of the shaft portion. The nut 39 as a fastening member is a known nut having a screw hole that enables the shaft portion of the bolt 37 to be screwed. The relay terminal 38 is formed in a cylindrical shape with copper having excellent conductivity. The relay terminal 38 is a conductive member and is used to indirectly connect the wiring 31 on the electric motor 10 side and the wiring 33 on the external side.

  In the present embodiment, one end surface of the relay terminal 38 corresponds to a seating surface that contacts the crimp terminal 32 of the wiring 31 on the electric motor 10 side. The other end surface opposite to the one end surface of the relay terminal 38 corresponds to a seat surface that contacts the crimp terminal 34 of the wiring 33 on the external connection side.

  Next, attachment of the terminal block device 12 of the present embodiment to the front cover 22 and connection of a plurality of wires 31 and 33 in the terminal block device 12 will be described. First, the terminal block body 35 of the terminal block device 12 is fixed to the front cover 22 using two bolts 26 (see FIGS. 2 and 4). In a state where the terminal block body 35 is fixed to the front cover 22, the partition plates 45 and 46 are inserted into the space portion 28 of the front cover 22. The partition plate 45 faces the front wall 29, and the partition plate 46 faces the side wall 30 (see FIGS. 3A and 3B).

  Next, the U-phase wiring 31 </ b> U, the V-phase wiring 31 </ b> V, and the W-phase wiring 31 </ b> W on the electric motor 10 side are drawn out from the space 28 and the opening 44 of the terminal base body 35. The U-phase wiring 31U, the V-phase wiring 31V, and the W-phase wiring 31W are bent so that the crimp terminals 34U, 34V, and 34W go to the raised portion 47, respectively. The portions of U-phase wiring 31U, V-phase wiring 31V, and W-phase wiring 31W in space 28 extend upward from coil end 19. A first partition plate 45 is interposed between the portion of the wirings 31U, 31V, 31W in the space 28 and the front wall 29, so that the insulation between the wirings 31U, 31V, 31W and the front cover 22 is the first. The partition plate 45 is used. One second partition plate 46 is interposed between the wiring 31 </ b> U and the side wall 30, and the insulation between 31 </ b> U and the front cover 22 is achieved by the one second partition plate 46. Similarly, the other second partition plate 46 is interposed between the wiring 31 </ b> W and the side wall 30, and the insulation between 31 </ b> W and the front cover 22 is achieved by the other second partition plate 46.

  Next, the connection between the terminal block device 12 and the U-phase wiring 31U, the V-phase wiring 31V, and the W-phase wiring 31W on the electric motor 10 side will be described. The crimp terminals 32U, 32V, and 32W are locked to the shafts of the bolts 37, and the heads of the bolts 37 are inserted into the bottomed holes 48 of the terminal block body 35 fixed to the electric motor 10 in advance (see FIG. 2). ).

  Next, the relay terminals 38 are screwed into the respective bolts 37, and the relay terminals 38 are brought into contact with the crimp terminals 32U, 32V, 32W. As shown in FIG. 3A, when the relay terminal 38 is in contact with the crimp terminals 32U, 32V, and 32W, the tip of the shaft portion of the bolt 37 sufficiently protrudes to the outside from the end surface of the relay terminal 38. Is in a state.

  Next, the cover body 36 is fixed to the terminal block main body 35 using the mounting bolts 26. When the cover body 36 is fixed to the terminal base body 35, each relay terminal 38 is inserted through the corresponding through hole 58. When the cover body 36 is fixed to the terminal block main body 35, a space part A isolated from the outside is formed between the lower terminal block main body 35 and the upper cover body 36. In the space A, the U-phase wiring 31U, the V-phase wiring 31V, and the W-phase wiring 31W are fixed to the terminal block device 12. Insulation partition part 61 ensures insulation between adjacent wirings in space A (between U-phase wiring 31U and V-phase wiring 31V, and between V-phase wiring 31V and W-phase wiring 31W).

  Next, the U-phase wiring 33U, the V-phase wiring 33V, and the W-phase wiring 33W on the external connection side are connected to the terminal block device 12. The crimp terminals 34U, 34V, 34W are engaged with the shaft portions of the bolts 37 protruding from the corresponding relay terminals 38, and the nuts 39 are screwed into the bolts 37 and tightened. When the nut 39 is tightened, the crimp terminals 34U, 34V, 34W are brought into contact with the end face of the relay terminal 38 outside the cover body 36. By tightening the nut 39, the crimp terminals 32U, 32V, 32W and the crimp terminals 34U, 34V, 34W receive axial force and are pressed against the relay terminal 38 and indirectly connected via the relay terminal 38.

According to the terminal block device 12 of the present embodiment, the following operational effects are obtained.
(1) Since the first partition plate 45 is interposed between the wiring 31 and the front wall 29 of the front cover 22 in the bending direction of the wiring 31, the wiring 31 and the front wall 29 are the first partition plate. It is physically isolated by 45. Therefore, the insulation between the wiring 31 and the front wall 29 can be reliably maintained regardless of the bending state of the wiring 31. As a result, it is possible to assemble the wiring to the terminal block main body 35 without being aware of how the wiring 31 is bent. Since it is possible to assemble the wiring to the terminal block main body 35 without being aware of the bending condition of the wiring 31, it is possible to shorten the time for assembling the terminal block device 12.

(2) Since the first partition plate 45 is integrally formed with the terminal base body 35, the first partition plate 45 is inserted into the space 28 along the front wall 29 of the front cover 22, The terminal block body 35 can be easily positioned with respect to the fixed position of the front cover 22.

(3) The second partition plate 46 is interposed between the wiring 31 (31U, 31W) and the side wall 30 of the front cover 22 in a direction orthogonal to the extending direction of the wiring 31 from the space portion 28 to the terminal portion. Therefore, the wiring 31 and the pedestal are physically separated by the second partition plate 46. The first wiring 31 (31U, 31W) and the side wall 30 in the direction orthogonal to the extending direction of the wiring 31 from the space portion 28 to the terminal portion are physically separated by the second partition plate 46.

(Second Embodiment)
Next, a terminal block device according to a second embodiment will be described. The terminal block device of the present embodiment is different from the first embodiment in the structure of the terminal block main body and the cover body. In the present embodiment, the configuration of the electric motor and the like other than the terminal block device is the same as that of the first embodiment, and thus the description of the first embodiment is used and common reference numerals are used.

  As shown in FIG. 7, the terminal block device 70 includes a terminal block main body 71, a cover body 72, and a terminal portion 73. The terminal block main body 71 and the cover body 72 of this embodiment are equivalent to a terminal block. The number of terminal portions 73 is the same as the number of wirings 31 and 33 for three phases. The terminal block main body 71 is formed in a rectangular flat plate shape with an insulating material (for example, polyamide resin). The terminal block main body 71 of the present embodiment is formed with a front end edge 74 located on the front cover 22 side in a state of being attached to the electric motor 10. In addition, the terminal block main body 71 is formed with a pair of side end edges 75 and 76 extending from both ends of the front end edge 74 in a direction orthogonal to the front end edge 74. The lengths of the side edges 75 and 76 are the same. A rear end edge 77 connecting the side end edge 75 and the side end edge 76 is formed, and the rear end edge 77 is parallel to the front end edge 74. The front end edge 74, the side end edges 75 and 76, and the rear end edge 77 form the outer peripheral edge of the terminal block main body 71. In the vicinity of the outer peripheral edge of the terminal block main body 71, a joint portion that joins the cover body 72 is formed.

  A rectangular opening 78 is formed at a position near the front end edge 74 of the terminal block main body 71 and away from the rear end edge 77. Opening 78 is formed to pass U-phase wiring 31U, V-phase wiring 31V, and W-phase wiring 31W. A first partition plate 79 and a second partition plate 80 are provided on the back surface of the terminal block main body 71 so as to follow a part of the opening 68. The first partition plate 79 and the second partition plate 80 are formed integrally with the terminal block main body 71 and are formed so as to protrude from the back surface of the terminal block main body 71. The first partition plate 79 is formed on the side on the front end edge 74 side among the four sides of the opening 78. The second partition plate 80 is formed on each of the side edges 75 and 76 of the four sides of the opening 78.

  In the present embodiment, the first partition plate 79 and the second partition plate 80 are provided separately from each other, and are inserted into the space 28 when the terminal block main body 71 is fixed to the front cover 22. . The first partition plate 79 is interposed between the first wiring 31 and the front wall 29 of the front cover 22 in the extending direction of the wiring 31 from the space portion 28 toward the terminal portion 73, and the front wall 29 of the front cover 22. And the function of preventing contact with the wiring 31. As shown in FIG. 8, the wiring 31 has a coil side portion that extends from the coil end 19 to the radially outer side of the rotating shaft 21, a bent portion that is bent, and a terminal side portion that extends from the bent portion toward the terminal portion. doing. The extending direction is parallel to the terminal side portion from the bent portion toward the terminal portion. The second partition plate 80 is interposed between the first wiring 31 and the side wall 30 of the front cover 22 in a direction orthogonal to the extending direction of the wiring 31 from the space portion 28 toward the terminal portion 73. The side wall 30 and the wiring 31 are prevented from contacting each other. The extending direction is parallel to the terminal side portion from the bent portion toward the terminal portion, and the second partition plate 80 is parallel to the terminal side portion in the wiring 31. In the present embodiment, the first partition plate 79 and the second partition plate 80 cover the wiring 31 from three directions on both sides of the terminal side portion extending in the extending direction of the wiring 31 and on the bending side portion side of the wiring 31.

  Three terminal portions 73 (73U, 73V, 73W) are provided between the opening 78 and the rear end edge 77 of the terminal block main body 71. The terminal portion 73 is provided with a shaft portion that is inserted into the crimp terminal of the wiring 31. The terminal block main body 71 includes a through hole 81 through which the bolt 26 for attaching the terminal block main body 71 to the electric motor 10 is inserted. The through hole 81 is formed along the side end edges 75 and 76 at the joint. The terminal block main body 71 has an insulating partition part 82 erected between terminal parts 73 adjacent to each other.

  The cover body 72 is formed of the same insulating material as the terminal block body 71. The outer peripheral edge of the cover body 72 corresponds to the shape of the terminal block main body 71. In the vicinity of the outer peripheral edge of the cover body 72, a joint portion to be joined to the terminal block main body 71 is formed. The cover body 72 has a peripheral wall portion 83 that rises from the joint portion, and a first ceiling wall portion 84 and a second top wall portion 84 that are higher than the joint portion inside the peripheral wall portion 83 so that a space is formed inside the joint portion. A ceiling wall portion 85 is formed. The first ceiling wall 84 is positioned above the opening 78, and the second ceiling wall 85 is set to be higher than the first ceiling wall 84. An end portion of the cover body 72 on the second top wall portion 85 side is opened so that the second wiring 33 is inserted therethrough. A through hole 86 through which the bolt 26 is inserted is formed in the joint portion.

  As shown in FIG. 8, in a state where the joint portion of the cover body 72 and the joint portion of the terminal block body 71 are joined together, the U-phase wiring 33 </ b> U and the V-phase are provided between the terminal block body 71 and the cover body 72. A space B is formed in which the wiring 33V and the W-phase wiring 33W can be arranged. Further, the inner wall surface of the top wall portion 84 of the cover body 72 faces the terminal block main body 71. According to the terminal block device 70 of this embodiment, there exists an effect equivalent to 1st Embodiment.

  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 above embodiment, the number of the first wiring and the second wiring is three corresponding to the three phases. However, the number of the first wiring and the second wiring applied to the terminal block device is not limited to three. For example, it may be two or four.
In the above embodiment, the second partition plate is provided. However, the second partition plate is not an essential requirement, and may be a terminal block device that does not include the second partition plate.
In the above embodiment, 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 apparatus to electric power apparatuses other than an electric motor.

DESCRIPTION OF SYMBOLS 10 Electric motor 11 Motor main body 12, 70 Terminal block apparatus 13 Stator 14 Rotor 17 Stator core 18 Coil 19 Coil end 20 Rotor core 21 Rotating shaft 22 Front cover 28 Space 29 Front wall 30 Side wall 31 (31U, 31V, 31W) Wiring ( Motor side)
33 (33U, 33V, 33W) Wiring (external side)
35, 71 Terminal block main body 36, 72 Cover body 44, 78 Opening 45, 79 First partition plate 46, 80 Second partition plate 73 Terminal portion A Space portion

Claims (4)

A terminal block formed of an insulating material;
A terminal portion provided on the terminal block for electrically connecting the first wiring and the second wiring;
The terminal block is fixed to a pedestal having a space part through which the first wiring is inserted,
The terminal block device in which the first wiring is bent from the space portion toward the terminal portion,
The terminal block includes a partition plate formed integrally with the terminal block,
The terminal block device, wherein the partition plate is interposed between the first wiring and the pedestal in the space portion in an extending direction of the first wiring from the space portion toward the terminal portion. . The terminal block is
A terminal block main body fixed to the pedestal and having an opening through which the first wiring passes;
A cover body covering the terminal block body,
The terminal block device according to claim 1, wherein the partition plate is integrally formed with the terminal block main body. The partition plate is a first partition plate,
The terminal block includes a second partition plate formed integrally with the terminal block,
The second partition plate is interposed between the first wiring and the pedestal in the space portion in a direction orthogonal to the extending direction of the first wiring from the space portion toward the terminal portion. The terminal block device according to claim 1, wherein: The first wiring is a wiring connected to the terminal block from an electric motor,
The terminal block device according to claim 1, wherein the second wiring is a wiring connected to the external device from the terminal block.

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