JP3239582B2 - Rotating electric machine with shielded cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric machine with a shielded cable, and is useful when the shielded cable can be grounded or detached.

[0002]

2. Description of the Related Art Conventionally, in a rotating electric machine with a shielded cable, a shielded cable is provided through a frame of the rotating electric machine by using a technique of JIS F8801 "Electrical wire penetration hardware". FIG. 5 is a longitudinal sectional view showing a main part of the rotary electric machine with a shielded cable. In FIG.
Is a rotating electric machine frame, 21 is a shielded cable, 22
Is a body, 23a and 23b are washers, 24 is a fastening ground, and 25 is a gasket.

A body 22 is screwed into an opening 13 a ′ of the frame 13, and a shielded cable 21 passes through the frame 13 through a hollow portion of the body 22. A gasket 25 and washers 23a and 23b are interposed between the shield cable 21 and the body 22. Further, the gasket 25 and the washers 23a and 23b are fastened by a fastening gland 24 screwed to the body 22.

[0004]

However, in the rotating electric machine with a shielded cable according to the prior art described above, the shield of the shielded cable 21 is shielded because the integral shielded cable 21 passes through the frame 13 and is connected to the inside of the rotating electric machine. They cannot be grounded and they cannot be easily disassembled.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, it is an object of the present invention to provide a rotary electric machine with a shielded cable in which the shielded cable can be easily grounded and assembled.

[0006]

According to a first aspect of the present invention, which achieves the above object, both ends occupy the inside and outside of the frame through the frame, and are insulated from the frame. and conductor, and both ends of the conductor Sea
The respective ends of the external cable and the internal cable, which are shielded cables, are detachably connected to each other, and are connected to each other through the conductor.
Connecting means for electrically connecting the external cable and the internal cable, and connecting with an end of a shield of the external cable;
A washer that touches and contacts the washer , and
A conductive plate in contact with the outer peripheral surface of the frame,
The shield of the external cable is configured to be grounded to the frame via the washer and the plate .

According to a second aspect of the present invention, which achieves the above object, a conductor penetrates a frame and occupies both ends inside and outside the frame, and is electrically insulated from the frame. Conductor both ends and shielded cable
And the respective ends of the external cable and the internal cable are detachably connected to each other, and the external cable is connected via the conductor.
Coupling means for electrically coupling the cable and the internal cable; a conductive plate molded on a non-conductive terminal block provided around the coupling means and in contact with the outer peripheral surface of the frame; And a washer, packing and fastening for clamping the end of the shield of the external cable.
And a ground, through the washer and the plate.
Then, attach the shield of the external cable to the frame.
Characterized by being configured to over scan.

According to a third aspect of the present invention, which achieves the above object, a conductor penetrating a frame, both ends of which occupy inside and outside the frame, respectively, and a conductor insulated from the frame, Conductor both ends and shielded cable
And the respective ends of the external cable and the internal cable are detachably connected to each other, and the external cable is connected via the conductor.
A coupling means for electrically coupling the cable and the internal cable , and a fixing ground fixed to the outer peripheral surface of the frame so as to cover the conductor and the coupling means.
A conductive shield case having a bent portion bent in the direction of, a washer for holding an end of the shield of the external cable, a packing of conductive rubber, and the shield cable.
And a fastening gland in contact with the bent part of the base.
Washer, packing, fastening gland and shield case
Through the shield of the external cable to the frame
Characterized in that it is configured to be grounded .

[0009]

According to the first aspect of the present invention, the washer and the
The shield of the cable is grounded to the frame via the plate and the plate , and the cable is detached at the coupling means.

[0010] According to the present invention in the second configuration, Wa
The shield of the external cable is grounded to the frame via the washer and the plate. Moreover, since this plate is molded on the terminal block, it is easy to install, and the ground can be easily grounded.

[0011] According to the present invention having the above third configuration, Wa
The shield of the external cable is grounded to the frame via the washer, the packing, the fastening ground and the shield case. That is, grounding can be easily performed without specially providing members such as the plate. Moreover, the shield case prevents noise generated from the external cable from leaking to the outside.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a longitudinal sectional view (a sectional view taken along the line AA in FIG. 2) showing a main part of a rotary electric machine with a shielded cable according to an embodiment of the present invention, and FIG. 2 is a view showing the main part. The upper part in the figure shows a plane with the shield case removed, and the lower part in the figure shows a cross section taken along line BB in FIG. FIG. 3 is an enlarged view showing a portion C in FIG. 1 in detail.

In these figures, 1a and 1b are shielded cables, 2 is a fastening ground, 3a and 3b are washers, 4 and 7 are packings, 5 is a shield case, 6a and 6
b is a crimp terminal, 8a, 8b, 15a and 15b are bolts,
9 is a stud, 10a and 10b are washers, 11 is a terminal block, 12 is a plate, 14 is an O-ring, and 13 is a rotating electric machine frame.

The terminal block 11 is a plastic member. The terminal block main body 11a is hollow and has a right end and an upper end in FIG. 1 (openings 11c and 11d). The formed hollow terminal block projection 11
a, and a plate 12, which is a conductor having an L-shaped cross section, is molded on the terminal block main body 11a. The terminal block 11 has a terminal block body 11 a
3, the lower end surface of the plate 12 in the figure contacts the outer peripheral surface, and the terminal block protrusion 11 b is fitted into the opening 13 a of the frame 13. Note that the terminal block 11
An O-ring 14 is interposed between the frame and the frame 13.

The stud 9 is a hollow conductor whose upper and lower ends in FIG. 1 are open, and penetrates through the opening 13a of the frame 13 through the hollow of the terminal block projection 11b. Accordingly, the stud 9 and the frame 1 are formed by the terminal block convex portion 11b.
3 are electrically insulated.

At the upper and lower ends of the stud 9, crimp terminals 6a,
The base end of 6b is fastened by bolts 8a and 8b via washers 10a and 10b, respectively. The end of the shielded cable 1a is crimped to the tip of the crimp terminal 6a, and the end of the shielded cable 1b is crimped to the tip of the crimp terminal 6b. That is, the shielded cables 1a and 1b separated from the outside and the inside of the frame 13
Are electrically connected by studs 9 and crimp terminals 6a and 6b.

A rubber packing 4 is provided on the outer periphery of the shielded cable 1a, and conductive washers 3a and 3b are provided on the packing 4 in the left-right direction in FIG. It is fastened to the terminal block 11 by the fastening ground 2 screwed with the opening 11c. Moreover, a part of the washer 3a
It touches the middle right edge.

As shown in FIG. 3, the shield 1 of the shield cable 1a is provided between the packing 4 and the washer 3a.
The end of a 'is occupied. That is, this shield 1
The end of a 'is held between the plate 12, the washers 3a and 3b, the packing 4, and the fastening gland 2.
Thus, the shield 1a 'is grounded to the frame 13 via the washer 3a and the plate 12.

The packing 7 is made of rubber, and is provided in contact with the periphery of the opening 11d of the terminal block main body 11a for waterproofing. The shield case 5 is a conductive case in which the right end and the lower end in FIG.
And the bolts 15a, 15b so as to cover the terminal block 11.
And presses the packing 7 to fix the terminal block 11.

Therefore, according to the above embodiment, the bolt 10
The shield cables 1a and 1b can be easily attached and detached by using a and 10b, and the shield case 5 can be easily attached and detached by using bolts 15a and 15b. Therefore, it is easy to disassemble the rotating electric machine and the terminal block.
Further, the shield 1a 'of the shielded cable 1a can be easily grounded via the washer 3a and the plate 11. In addition, since the plate 11 is molded on the terminal block 11, installation is easy, and the shield 1
The grounding of a 'is also easy. Further, the shield case 5 can prevent noise emitted from the shield cable 1a from leaking outside, and the shield case 5 and the packing 7 and the like form a complete waterproof structure.

FIG. 4 is a longitudinal sectional view showing a main part of a rotary electric machine with a shielded cable according to another embodiment of the present invention. As shown in the drawing, in the other embodiment, a packing 4 'is provided in place of the packing 4 shown in FIG. 1, a shield case 5' is provided in place of the shield case 5, and a terminal is further provided. A terminal block 11 'is provided in place of the table 11. The other configuration of the other embodiment is the same as that of the above embodiment.

The packing 4 'is made of conductive rubber. The right end of the shield case 5 ′ in FIG. 3 is bent in the direction of the fastening gland 2 (bending portion 5 a ′), and the bending portion 5 a ′ is in contact with the fastening gland 2. Other shapes of the shield case 5 'are the same as those of the shield case 5. Terminal block 11 'is terminal block 1.
1, but the plate 12 is not molded.

Therefore, according to the other embodiment, the washer 3
a, 3b, a packing 4 'and an end of the shield 1a' of the shielded cable 1a (see FIG. 3; not shown in FIG. 4) sandwiched by the packing gland 2 and the packing gland 2; The frame 13 is grounded via 5 '. That is, in this embodiment, the shield 1a 'can be easily grounded to the frame 13 without specially providing a member such as the plate 12 in the above embodiment.

[0025]

According to the present invention, the shield of the external cable can be grounded to the frame through the washer and the plate through the washer and the plate, and the cable can be connected by the connecting means. Can be easily attached and detached, so that the rotating electric machine and the terminal block can be easily assembled and disassembled.

The plate is molded on the terminal block.
Because, the easier it der installation of plates, it is possible to ground the correspondingly easily the shield.

Also, washers, packings, fastening glands and
And shield the external cable through the shield case.
By configuring the frame to be grounded, the shield can be easily grounded without specially providing a member such as the plate.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view (a sectional view taken along line AA of FIG. 2) showing a main part of a rotary electric machine with a shielded cable according to an embodiment of the present invention.

2 is a view showing the main part, wherein an upper part in the figure shows a plane with a shield case removed, and a lower part in the figure shows a cross section taken along line BB of FIG. 1;

FIG. 3 is an enlarged view showing a portion C in FIG. 1 in detail.

FIG. 4 is a longitudinal sectional view showing a main part of a rotary electric machine with a shielded cable according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing a main part of a rotary electric machine with a shielded cable according to the related art.

[Explanation of symbols]

 1a, 1b Shielded cable 1a 'Shield 2 Fastening ground 3a, 3b, 10a, 10b Washer 4, 7 Packing 5 Shield case 6a, 6b Crimping terminal 8a, 8b, 15a, 15b Bolt 9 Stud 11 Terminal block 12 Plate 13 Frame 14O ring

Claims (3)

(57) [Claims] 1. A conductor that penetrates a frame and occupies both ends inside and outside of the frame, and is insulated from the frame, and both ends of the conductor and an external cable that is a shielded cable; Each end of the internal cable is detachably connected to each end, and the external cable and the internal cable are connected via the conductor.
Coupling means for electrically coupling the cable with the cable, and a washer contacting an end of the shield of the external cable.
And contact the washer, and on the outer peripheral surface of the frame.
And a conductive plate in contact therewith.
Through the fine plate, before the shielding of the external cable
A rotating electric machine with a shielded cable, wherein the rotating electric machine is configured to be grounded to the frame . 2. A conductor which penetrates through the frame and occupies both ends inside and outside of the frame, and is insulated from the frame, and both ends of the conductor and an external cable which is a shielded cable; Each end of the internal cable is detachably connected to each end, and the external cable and the internal cable are connected via the conductor.
Coupling means for electrically coupling the external cable to the external cable, a conductive plate molded on a non-conductive terminal block provided around the coupling means and in contact with the outer peripheral surface of the frame, Equipped with a washer, packing and fastening gland to clamp the end of the shield
And the outside through the washer and the plate.
A rotary electric machine with a shielded cable, wherein a shield of the cable is grounded to the frame . 3. A conductor which penetrates through the frame, occupies both ends inside and outside of the frame, and is insulated from the frame, and both ends of the conductor and an external cable which is a shielded cable; Each end of the internal cable is detachably connected to each end, and the external cable and the internal cable are connected via the conductor.
A coupling means for electrically coupling the cable and the cable ; and a fixing ground covering the conductor and the coupling means and fixed to an outer peripheral surface of the frame, and an end of the frame.
A conductive shield case having a bent portion bent in a direction, and a washer for holding an end of the shield of the external cable.
Bender, packing of conductive rubber and bending of the shield case
And a fastening gland in contact with the folded part.
Through the sealer, packing, fastening ground and shield case.
The shield of the external cable to the frame.
A rotating electric machine with a shielded cable, wherein