US 9,853,373 B2 · Terminal block connection structure in rotary electric machine

Abstract

A terminal block connection structure includes: a connector connected to intermediate parts of a plurality of power lines; a bus bar unit including a plurality of bus bars and at least one resin member; a terminal block being configured such that the distal ends of the plurality of power lines are connected to each other via the bus bar unit. The plurality of bus bars each includes a first plate portion fixed to the terminal block and a second plate portion bent from one end of the first plate portion. The connector is fitted to the resin member which is configured to prevent a movement of the connector in at least one direction out of moving directions of the connector.

Drawings

Drawings are temporarily unavailable. Open the PDF at USPTO

Drawings

Claims5

Dependent claims

A terminal block connection structure for a rotary electric machine including a stator coil, the stator coil having a plurality of phases, the terminal block connection structure comprising:

a plurality of power lines connected to the stator coil, the plurality of power lines corresponding to the plurality of phases;
a connector connected to intermediate parts of the plurality of power lines, the connector being configured to integrate the plurality of power lines;
a bus bar unit including a plurality of bus bars and at least one resin member, the plurality of bus bars being connected to respective distal ends of the plurality of power lines, the resin member connecting the plurality of bus bars;
and
a terminal block configured such that the distal ends of the plurality of power lines are connected to the terminal block via the bus bar unit, the terminal block being configured to connect the plurality of power lines to a plurality of power-source lines, respectively, the plurality of bus bars each including:
a first plate portion;
and
a second plate portion, the first plate portion being fixed to the terminal block, the second plate portion being bent from one end of the first plate portion, the second plate portion being configured to be connected to the distal end of the power line of a corresponding phase, wherein
the connector is fitted to the resin member such that the resin member prevents a movement of the connector in at least one direction from among a plurality of moving directions of the connector, wherein:
the resin member has a groove provided on a side face of the resin member, the side face facing the connection member, and
the connector is configured to be fitted to the groove such that walls of the groove prevent the movement of the connector in the at least one direction,
wherein
the connector has a first projection or a recessed portion,
when connector has the first projection, the resin member has a recessed portion on an inner side of the groove, and when the connector has the recessed portion, the resin member has a first projection on an inner side of the groove,
the first projection is configured to be fitted to the recessed portion such that the first projection prevents a movement of the connector in a direction perpendicular to the at least one direction.

12 more elements

A terminal block connection structure for a rotary electric machine including a stator coil, the stator coil having a plurality of phases, the terminal block connection structure comprising:

a plurality of power lines connected to the stator coil, the plurality of power lines corresponding to the plurality of phases;
a connector connected to intermediate parts of the plurality of power lines, the connector being configured to integrate the plurality of power lines;
a bus bar unit including a plurality of bus bars and at least one resin member, the plurality of bus bars being connected to respective distal ends of the plurality of power lines, the resin member connecting the plurality of bus bars;
and
a terminal block configured such that the distal ends of the plurality of power lines are connected to the terminal block via the bus bar unit, the terminal block being configured to connect the plurality of power lines to a plurality of power-source lines, respectively, the plurality of bus bars each including:
a first plate portion;
and
a second plate portion, the first plate portion being fixed to the terminal block, the second plate portion being bent from one end of the first plate portion, the second plate portion being configured to be connected to the distal end of the power line of a corresponding phase, wherein
the connector is fitted to the resin member such that the resin member prevents a movement of the connector in at least one direction from among a plurality of moving directions of the connector, wherein
the connector has a groove provided on a side face of the connector, the side face facing the resin member, and
the resin member is configured to be fitted in the groove such that walls of the groove prevents the movement of the connector in the at least one direction, wherein
the connector has a first projection or a recessed portion on an inner side of the groove,
when the connector has the first projection on the inner side of the groove, the resin member has a recessed portion, and when the connector has the recessed portion on the inner side of the groove, the resin member has the first projection,
the first projection is configured to be fitted in the recessed portion such that the first projection prevents a movement of the connector in a direction perpendicular to the at least one direction.

11 more elements

Dependencies are inferred from the claim text.

Description7,838 words

Summary1,444 words

#The disclosure of Japanese Patent Application No. 2015-199522 filed on Oct. 7, 2015 including the specification, drawings and abstract is incorporated herein by reference in its entirety.

#1. Technical Field

#The present disclosure relates to improvement in a vibration resistance of a terminal block connection structure for a rotary electric machine stator including a plurality of power lines connected to a stator coil of a rotary electric machine, a connector for integrating the plurality of power lines, and a terminal block to which distal ends of the plurality of power lines are connected.

Brief description of the drawings17 figures

#Exemplary embodiments will be described below with reference to the accompanying drawings, in which like numerals denote like elements, and wherein:

#FIG. 1 is a perspective view of a stator fixing structure including a terminal block connection structure for a rotary electric machine according to an embodiment, when viewed inward from an outside of a case;

#FIG. 2 is a perspective view illustrating a state where a member on a power-line side is connected to a stator coil in the terminal block connection structure;

Detailed description5,984 words

#Exemplary embodiments of the present disclosure, with reference to the drawings, are described in detail. A shape, a material, and a number to be described below are exemplifications for descriptions, and they can be changed appropriately according to a specification of a structure for connecting a power line to a terminal block of a rotary electric machine. In the following description, similar elements in all drawings have the same reference sign. Note that a stator constitutes a rotary electric machine in combination with a rotor fixed to a rotating shaft. The rotary electric machine is used as a motor or a generator, or a motor generator having functions of both the motor and the generator.

#FIG. 1 is a perspective view of a stator fixing structure 10 including a connection structure 20 when viewed inward from an outside of a case 12. The connection structure 20 is a structure for connecting the power lines 31u, 31v, 31w to the terminal block of the rotary electric machine according to the embodiment. FIG. 2 is a perspective view illustrating a state where a member on a side of power lines 31u, 31v, 31w is connected to a three-phase stator coil 16 in the terminal block connection structure 20 shown in FIG. 1.

#The stator fixing structure 10 includes the case 12, a stator 14 fixed to an inner side of the case 12, and the terminal block connection structure 20. The stator 14 includes a stator core 15 and the three-phase stator coil 16.

Facts

Application

15/285,150Filed 4 Oct 2016

Priority

JP 2015-1995227 Oct 2015

Published

US 2017/0104281 A113 Apr 2017

Granted

26 Dec 2017

Term ends

4 Oct 2036

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification6 codes

H01R 9/2416
Terminal blocks: means for guiding or retaining wires or cables connected to terminal blocks
H02K 3/522
Applicable to stators only: for generally annular cores with salient poles
H02K 5/225
Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes: terminal boxes or…
H02K 2203/09
Specific aspects not provided for in the other groups of this subclass relating to the windings: machines characterised by wiring elements other…

Timeline

7 Oct 2015Priority claimedJP 2015-199522
4 Oct 2016Application filedUS 15/285,150
4 Oct 2016Assigned to Toyota Jidosha Kabushiki Kaishaassignment of assignor's interest
13 Apr 2017PublishedUS 2017/0104281 A1
26 Dec 2017GrantedUS 9,853,373 B2
12 Oct 2026TodayWithin its term
4 Oct 2036Term endsEstimated

Terminal block connection structure in rotary electric machine

Life of this patent

Terminal block connection structure in rotary electric machine

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims5

Description7,838 words

Drawings

Classification6 codes

Life of this patent

Description7,838 words