EP0939454B1 - Electrical wiring construction including a bus bar - Google Patents
Electrical wiring construction including a bus bar Download PDFInfo
- Publication number
- EP0939454B1 EP0939454B1 EP19990301228 EP99301228A EP0939454B1 EP 0939454 B1 EP0939454 B1 EP 0939454B1 EP 19990301228 EP19990301228 EP 19990301228 EP 99301228 A EP99301228 A EP 99301228A EP 0939454 B1 EP0939454 B1 EP 0939454B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bus bar
- connection terminal
- electricity
- bypassing
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
- H01R13/207—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together by screw-in connection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/08—Short-circuiting members for bridging contacts in a counterpart
- H01R31/085—Short circuiting bus-strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
Definitions
- the present invention relates to an electric wiring construction having a bus bar for supplying electricity to one or more electricity-consuming components.
- a first connection terminal is connected with the bus bar by means of a first screw tightened into the bus bar.
- a second connection terminal is connected with the bus bar by means of a second screw tightened into the bus bar.
- An input line is connected with the first connection terminal, and an output line for supplying electric current to one or more other electricity-consuming components is connected with the second connection terminal.
- the various electricity-consuming components installed on a vehicle are powered by electricity generated by a generator which is operated by the actuation of the engine.
- a relay box is provided on an electricity supply path connected with the electricity-consuming components.
- the relay box accommodates a plurality of relays for switching the supply of electric current to electricity-consuming components, to turn them on and off.
- Fig. 6 shows a known relay box 11.
- An electrically conductive bus bar 12 is installed on the relay box 11. Relays are electrically connected with the bus bar 12. A part of the bus bar 12 is exposed on an outer surface of the relay box 11. Electricity generated by a generator is transmitted to the relays through an input line 13 and the bus bar 12.
- the input line 13 is crimped to connect it with a crimping portion 151 of a first connection terminal 15.
- the first connection terminal 15 is connected with the bus bar 12 by a first screw 16 tightened the bus bar 12.
- the bus bar 12 for supplying electricity to the relays is also used to supply electricity to other electricity-consuming components other than via the relays.
- An output line 14 for supplying electricity to the other electricity-consuming components is crimped to connect it with a crimping portion 171 of a second connection terminal 17.
- the second connection terminal 17 is connected with the bus bar 12 by a second screw 18 tightened into the bus bar 12.
- the electricity generated by the generator is transmitted to the relays accommodated inside the relay box 11 and the output line 14 through the input line 13 and the bus bar 12. That is, through the bus bar 12, electricity is sent to the other electricity-consuming components positioned at the other end of the output line 14.
- electricity passes through the bus bar 12, heat is generated by the bus bar 12.
- the generated heat is transmitted to the first and second connection terminals 15 and 17 and the first and second screws 16 and 18. Owing to the heat transmission, the first and second connection terminals 15 and 17 and the first and second screws 16 and 18 are heated.
- the input line 13 is fixed by crimping to the first connection terminal 15, and the output line 14 is fixed by crimping to the second connection terminal 17.
- a power source terminal assembly comprising a bus bar with first and second connection terminals connected thereto by screws is disclosed in document US-A-4 486 058.
- the present invention provides an electric wiring construction having a bus bar for supplying electricity to one or more electricity-consuming components; a first connection terminal is connected with the bus bar by means of a first screw tightened into the bus bar; a second connection terminal is connected with the bus bar by means of a second screw tightened into the bus bar; an input line is connected to the first connection terminal; and an output line for supplying electric current to one or more other electricity-consuming components is connected to the second connection terminal.
- the first connection terminal and the second connection terminal are connected to each other by a bypassing member.
- the first connection terminal and the second connection terminal each have a respective crimping portion; one end of the bypassing member and the input line are crimped to the crimping portion of the first connection terminal; and the other end of the bypassing member and the output line are crimped to the crimping portion of the second connection terminal.
- one end of the bypassing member is connected with at least one of the first connection terminal and the bus bar by means of the first screw tightened into the bus bar; and the other end of the bypassing member is connected with at least one of the first connection terminal and the bus bar by means of the second screw tightened into the bus bar. That is both the bypassing member and the connection terminals are connected with the bus bar by tightening the screws into the bus bar.
- the bus bar is installed on a relay box accommodating a plurality of relays, and the relays are electrically connected with the bus bar.
- FIG. 1 A first embodiment of the present invention will be described with reference to Figs. 1 and 2. Constituent components of the first embodiment which are the same as those shown in Fig. 6 are denoted by the same reference numerals as those used in Fig. 6.
- an exposed core wire at an end portion of an input line 13 and an exposed core wire at an end portion of an electrically conductive bypassing line 19 are crimped to a crimping portion 151 of a first connection terminal 15.
- the terminal 15 is connected with a bus bar 12 by means of a first screw 16 tightened into the bus bar 12.
- An exposed core wire at an end portion of an output line 14 and an exposed core wire at an end portion of the bypassing line 19 are crimped to a crimping portion 171 of a second connection terminal 17, which is connected with the bus bar 12 by means of a second screw 18 tightened into the bus bar 12.
- Fig. 2 shows the wire construction of Fig. 1 connected to a generator 20, which generates electricity by the actuation of the engine of a vehicle for transmission to various electricity-consuming components.
- a relay box 11 accommodates fuses 21, 22, 23, and 24 and relays 25, 26, 27, and 28.
- the relay 25 performs switching of electric current supply to a glow plug 29, which is an electricity-consuming component, to turn the glow plug 29 on or off.
- the relays 26 - 28 perform switching of electric current supply to a heater (not shown), which is another electricity-consuming component, to turn the heater on or off.
- the fuse 24 is electrically connected with an electricity-consuming component which is not shown in Fig. 2.
- the output line 14 is connected with a bus bar 31 accommodated inside a fuse box 30.
- the bus bar 31 is electrically connected with a battery 33 through a fuse 32.
- the bus bar 31 is also electrically connected with an electricity distribution part 35 through a fuse 34.
- the electricity distribution part 35 distributes electric current to various electricity-consuming components.
- a plate-shaped bypassing member 36 and first and second connection terminals 15 and 17 are connected with a bus bar 12 by means of first and second screws 16 and 18 tightened into the bus bar 12.
- the bypassing member 36 is interposed between the connection terminal 15 and the head of the first screw 16 and between the second connection terminal 17 and the head of the second screw 18.
- the heat transmission area of the plate-shaped bypassing member 36 is greater than that of the bypassing line 19 of the first embodiment. Therefore, the bypassing member 36 prevents the temperature rise of the bus bar 12, the first connection terminal 15, the second connection terminal 17, the first screw 16, and the second screw 18 more effectively than the bypassing line 19 of the first embodiment.
- a bypassing member 36 is interposed between a bus bar 12 and a first connection terminal 15 and between the bus bar 12 and a second connection terminal 17.
- an input line 174, an output line 172, and a bypassing line 173 are formed integrally with one another to form a lead wire 175.
- a core wire of the lead wire 17, exposed by removing the covering of the lead wire 17, is crimped to crimping portions 151 and 171.
- the fourth embodiment provides effects similar to those of the first embodiment.
- the present invention may ensure good electrical contact between the connection terminals and the bus bar.
Landscapes
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Connection Or Junction Boxes (AREA)
Description
- The present invention relates to an electric wiring construction having a bus bar for supplying electricity to one or more electricity-consuming components. A first connection terminal is connected with the bus bar by means of a first screw tightened into the bus bar. A second connection terminal is connected with the bus bar by means of a second screw tightened into the bus bar. An input line is connected with the first connection terminal, and an output line for supplying electric current to one or more other electricity-consuming components is connected with the second connection terminal.
- Conventionally, the various electricity-consuming components installed on a vehicle (e.g. a glow plug, heater, or the like) are powered by electricity generated by a generator which is operated by the actuation of the engine. A relay box is provided on an electricity supply path connected with the electricity-consuming components. The relay box accommodates a plurality of relays for switching the supply of electric current to electricity-consuming components, to turn them on and off. Fig. 6 shows a known
relay box 11. An electricallyconductive bus bar 12 is installed on therelay box 11. Relays are electrically connected with thebus bar 12. A part of thebus bar 12 is exposed on an outer surface of therelay box 11. Electricity generated by a generator is transmitted to the relays through aninput line 13 and thebus bar 12. Theinput line 13 is crimped to connect it with a crimpingportion 151 of afirst connection terminal 15. Thefirst connection terminal 15 is connected with thebus bar 12 by afirst screw 16 tightened thebus bar 12. - The
bus bar 12 for supplying electricity to the relays is also used to supply electricity to other electricity-consuming components other than via the relays. Anoutput line 14 for supplying electricity to the other electricity-consuming components is crimped to connect it with a crimpingportion 171 of asecond connection terminal 17. Thesecond connection terminal 17 is connected with thebus bar 12 by asecond screw 18 tightened into thebus bar 12. - The electricity generated by the generator is transmitted to the relays accommodated inside the
relay box 11 and theoutput line 14 through theinput line 13 and thebus bar 12. That is, through thebus bar 12, electricity is sent to the other electricity-consuming components positioned at the other end of theoutput line 14. When electricity passes through thebus bar 12, heat is generated by thebus bar 12. The generated heat is transmitted to the first andsecond connection terminals second screws second connection terminals second screws input line 13 is fixed by crimping to thefirst connection terminal 15, and theoutput line 14 is fixed by crimping to thesecond connection terminal 17. When the temperature of the generated heat of thebus bar 12 exceeds the thermal resistance temperature of thefirst connection terminal 15 and that of thesecond connection terminal 17, the electrical contact between theinput line 13 and thecrimping portion 151 and that between theoutput line 14 and thecrimping portion 171 become poor. - A power source terminal assembly comprising a bus bar with first and second connection terminals connected thereto by screws is disclosed in document US-A-4 486 058.
- It is an object of the present invention to prevent poor electrical contact between a connection terminal and a bus bar.
- In order to address the object, the present invention provides an electric wiring construction having a bus bar for supplying electricity to one or more electricity-consuming components; a first connection terminal is connected with the bus bar by means of a first screw tightened into the bus bar; a second connection terminal is connected with the bus bar by means of a second screw tightened into the bus bar; an input line is connected to the first connection terminal; and an output line for supplying electric current to one or more other electricity-consuming components is connected to the second connection terminal. The first connection terminal and the second connection terminal are connected to each other by a bypassing member.
- Accordingly, part of the electric current flowing through the input line flows to the output line not via the bus bar but via the bypassing line. This construction allows a smaller amount of electric current to flow through the bus bar than that flowing through a bus bar of the conventional construction.
- Preferably, the first connection terminal and the second connection terminal each have a respective crimping portion; one end of the bypassing member and the input line are crimped to the crimping portion of the first connection terminal; and the other end of the bypassing member and the output line are crimped to the crimping portion of the second connection terminal.
- For example, it is easy to form a construction in which the bypassing member is crimped to the crimping portion of each connection terminal, together with the input and output lines.
- Preferably, one end of the bypassing member is connected with at least one of the first connection terminal and the bus bar by means of the first screw tightened into the bus bar; and the other end of the bypassing member is connected with at least one of the first connection terminal and the bus bar by means of the second screw tightened into the bus bar. That is both the bypassing member and the connection terminals are connected with the bus bar by tightening the screws into the bus bar.
- Usually, the bus bar is installed on a relay box accommodating a plurality of relays, and the relays are electrically connected with the bus bar.
-
- Fig. 1 is a perspective view of a first embodiment of the present invention and a partly broken-away enlarged view showing a main portion of the first embodiment;
- Fig. 2 is a circuit diagram of the embodiment of Fig. 1;
- Fig. 3 is a perspective view of a second embodiment of the present invention;
- Fig. 4 is a perspective view of a third embodiment of the present invention;
- Fig. 5 is a partly broken-away front view of a fourth embodiment of the present invention; and
- Fig. 6 is a perspective view of a conventional construction.
-
- A first embodiment of the present invention will be described with reference to Figs. 1 and 2. Constituent components of the first embodiment which are the same as those shown in Fig. 6 are denoted by the same reference numerals as those used in Fig. 6.
- As shown in Fig. 1, an exposed core wire at an end portion of an
input line 13 and an exposed core wire at an end portion of an electricallyconductive bypassing line 19 are crimped to a crimpingportion 151 of afirst connection terminal 15. Theterminal 15 is connected with abus bar 12 by means of afirst screw 16 tightened into thebus bar 12. An exposed core wire at an end portion of anoutput line 14 and an exposed core wire at an end portion of thebypassing line 19 are crimped to a crimpingportion 171 of asecond connection terminal 17, which is connected with thebus bar 12 by means of asecond screw 18 tightened into thebus bar 12. - Fig. 2 shows the wire construction of Fig. 1 connected to a
generator 20, which generates electricity by the actuation of the engine of a vehicle for transmission to various electricity-consuming components. Arelay box 11 accommodates fuses 21, 22, 23, and 24 andrelays relay 25 performs switching of electric current supply to aglow plug 29, which is an electricity-consuming component, to turn theglow plug 29 on or off. The relays 26 - 28 perform switching of electric current supply to a heater (not shown), which is another electricity-consuming component, to turn the heater on or off. Thefuse 24 is electrically connected with an electricity-consuming component which is not shown in Fig. 2. Theoutput line 14 is connected with abus bar 31 accommodated inside afuse box 30. Thebus bar 31 is electrically connected with abattery 33 through afuse 32. Thebus bar 31 is also electrically connected with anelectricity distribution part 35 through afuse 34. Theelectricity distribution part 35 distributes electric current to various electricity-consuming components. - The following effects can be obtained in the first embodiment.
- (1-1) A part of the electric current flowing through
the
input line 13 flows to theoutput line 14 not via thebus bar 12 but via thebypassing line 19. If thebypassing line 19 was not provided, all of electric current which flows through theinput line 13 would flow through thebus bar 12. The construction of the present invention allows a lower amount of the electric current to flow through thebus bar 12 than that flowing through the bus bar of the conventional construction. Thus, the heat generated in thebus bar 12 is lower than the heat generated by the bus bar of the conventional construction. Consequently, the temperature rises of thebus bar 12, thefirst connection terminal 15, thesecond connection terminal 17, thefirst screw 16, and thesecond screw 18 are smaller than that in the corresponding members of the conventional construction. Accordingly, it is possible to ensure good electrical contact between thebus bar 12 and thefirst connection terminal 15, as well as between thebus bar 12 thesecond connection terminal 17, even though heat is repeatedly generated in thebus bar 12 upon switching electric current to and from the electricity-consuming components. - (1-2) The bypassing
line 19 transmits heat transmitted to it. Thus, the temperature of thefirst connection terminal 15, thesecond connection terminal 17, thefirst screw 16, and thesecond screw 18 can be prevented from becoming high. The heat transmission of the bypassingline 19 contributes to preventing poor electrical contact between theinput line 13 and thefirst connection terminal 15 and between theoutput line 14 and thesecond connection terminal 17. - (1-3) It is very easy to form a construction in which
the
input line 13 and the bypassingline 19 are crimped together to the crimpingportion 151 of thefirst connection terminal 15 and theoutput line 14 and the bypassingline 19 are crimped together to the crimpingportion 171 of thesecond connection terminal 17. That is, the construction can be formed by merely adding the bypassingline 19 to the conventional construction. -
- The second embodiment of the present invention will be described below with reference to Fig. 3. Constituent components of the second embodiment which are the same as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment.
- In the second embodiment, a plate-shaped bypassing
member 36 and first andsecond connection terminals bus bar 12 by means of first andsecond screws bus bar 12. The bypassingmember 36 is interposed between theconnection terminal 15 and the head of thefirst screw 16 and between thesecond connection terminal 17 and the head of thesecond screw 18. Thus, there is a gap formed between thebus bar 12 and the bypassingmember 36. - In the second embodiment, effects similar to those described above in items (1-1) and (1-3) are obtained. The heat transmission area of the plate-shaped bypassing
member 36 is greater than that of the bypassingline 19 of the first embodiment. Therefore, the bypassingmember 36 prevents the temperature rise of thebus bar 12, thefirst connection terminal 15, thesecond connection terminal 17, thefirst screw 16, and thesecond screw 18 more effectively than the bypassingline 19 of the first embodiment. - In the third embodiment shown in Fig. 4, a bypassing
member 36 is interposed between abus bar 12 and afirst connection terminal 15 and between thebus bar 12 and asecond connection terminal 17. - The fourth embodiment of the present invention will be described below with reference to Fig. 5. Constituent parts of the fourth embodiment which are the same as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment.
- In the fourth embodiment, an
input line 174, anoutput line 172, and a bypassingline 173 are formed integrally with one another to form alead wire 175. A core wire of thelead wire 17, exposed by removing the covering of thelead wire 17, is crimped to crimpingportions - The fourth embodiment provides effects similar to those of the first embodiment.
- Further embodiments of the present invention may be obtained by adapting the first to fourth embodiments (especially the second or third embodiment) in one or both of the following ways:
- (1) Forming the bypassing member integrally with the
bus bar 12. - (2) Forming a heat release fin on the bypassing member to increase the heat release area.
-
- As described above, because the first connection terminal and the second connection terminal are connected with each other by the bypassing member, the present invention may ensure good electrical contact between the connection terminals and the bus bar.
Claims (4)
- An electric wiring construction having:a bus bar (12) for supplying electricity to one or more electricity-consuming components (29),a first connection terminal (15) connected to said bus bar (12) by means of a first screw (16) tightened into said bus bar (12);a second connection terminal (17) connected to said bus bar (12) by means of a second screw (18) tightened into said bus bar;an input line (13;174) connected to said first connection terminal (15); andan output line (14; 172) for supplying electric current to one or more other electricity-consuming components, the output line being connected to said second connection terminal (17),
- The electric wiring construction according to claim 1, wherein said first connection terminal (15) and said second connection terminal (17) each have a crimping portion (151,171), one end of said bypassing member (19,173) and one end of said input line (13,174) are crimped to said crimping portion (151) of said first connection terminal (15), and the other end of said bypassing member and the other end of said output line (14; 172) are crimped to said crimping portion (171) of said second connection terminal (17).
- The electric wiring construction according to claim 1, wherein one end of said bypassing member (36) is connected to at least one of said first connection terminal (15) and said bus bar (12) by means of said first screw (16); and the other end of said bypassing member (36) is connected to at least one of said second connection terminal (17) and said bus bar (12) by means of said second screw (18).
- The electric wiring construction according to any one of claims 1 to 3, wherein said bus bar (12) is installed on a relay box (11) accommodating a plurality of relays(25,26,27,28); and said relays are electrically connected with said bus bar.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04678298A JP4030646B2 (en) | 1998-02-27 | 1998-02-27 | Method for oxidizing aliphatic primary alcohol |
JP4678298 | 1998-02-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0939454A2 EP0939454A2 (en) | 1999-09-01 |
EP0939454A3 EP0939454A3 (en) | 2001-08-01 |
EP0939454B1 true EP0939454B1 (en) | 2004-10-06 |
Family
ID=12756910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990301228 Expired - Lifetime EP0939454B1 (en) | 1998-02-27 | 1999-02-19 | Electrical wiring construction including a bus bar |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0939454B1 (en) |
JP (1) | JP4030646B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4916612B2 (en) * | 2000-12-28 | 2012-04-18 | 花王株式会社 | Method for producing compound having carboxyl group and / or carbonyl group |
CN110963947A (en) * | 2019-12-23 | 2020-04-07 | 张家港格瑞特化学有限公司 | Preparation method of surfactant |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS509794B1 (en) * | 1969-03-11 | 1975-04-16 | ||
JPS5851479A (en) * | 1981-09-18 | 1983-03-26 | 富士通株式会社 | Terminal board for power source |
JPS591443A (en) * | 1982-06-28 | 1984-01-06 | Nikka Chem Ind Co Ltd | Preparation of polyethylene glycolic acid |
US4639819A (en) * | 1984-08-06 | 1987-01-27 | Lutron Electronics Co., Inc. | Protective bypass for electronic circuits |
US5064384A (en) * | 1990-12-04 | 1991-11-12 | Square D Company | Jumper assembly for multiple breaker application |
JP2929838B2 (en) * | 1992-06-17 | 1999-08-03 | 住友電装株式会社 | Wire harness and method of manufacturing the same |
JP3240424B2 (en) * | 1993-05-11 | 2001-12-17 | 大塚化学株式会社 | Method for producing carboxylic acid |
JPH07154914A (en) * | 1993-11-29 | 1995-06-16 | Sumitomo Wiring Syst Ltd | Branch connection box |
JP3269920B2 (en) * | 1994-07-28 | 2002-04-02 | 三菱電機株式会社 | connector |
JP4407846B2 (en) * | 1998-02-27 | 2010-02-03 | 花王株式会社 | Method for oxidizing primary alcohol |
-
1998
- 1998-02-27 JP JP04678298A patent/JP4030646B2/en not_active Expired - Fee Related
-
1999
- 1999-02-19 EP EP19990301228 patent/EP0939454B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH11246471A (en) | 1999-09-14 |
EP0939454A3 (en) | 2001-08-01 |
JP4030646B2 (en) | 2008-01-09 |
EP0939454A2 (en) | 1999-09-01 |
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