WO2019087396A1 - Bush, connector, and lead storage battery - Google Patents

Bush, connector, and lead storage battery Download PDF

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Publication number
WO2019087396A1
WO2019087396A1 PCT/JP2017/039963 JP2017039963W WO2019087396A1 WO 2019087396 A1 WO2019087396 A1 WO 2019087396A1 JP 2017039963 W JP2017039963 W JP 2017039963W WO 2019087396 A1 WO2019087396 A1 WO 2019087396A1
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WO
WIPO (PCT)
Prior art keywords
connector
bush
lead
power supply
main body
Prior art date
Application number
PCT/JP2017/039963
Other languages
French (fr)
Japanese (ja)
Inventor
伊織 永留
聡 草野
Original Assignee
日立化成株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日立化成株式会社 filed Critical 日立化成株式会社
Priority to PCT/JP2017/039963 priority Critical patent/WO2019087396A1/en
Priority to PCT/JP2018/016483 priority patent/WO2019087434A1/en
Priority to JP2018553502A priority patent/JP6536754B1/en
Priority to CN201880070369.6A priority patent/CN111295806B/en
Publication of WO2019087396A1 publication Critical patent/WO2019087396A1/en

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    • 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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases

Definitions

  • One aspect of the present invention relates to a bush used for a connector for connecting power cables, a connector provided with the same, and a lead-acid battery provided with the connector.
  • a plurality of storage batteries and a power supply controller are electrically connected by a power cable.
  • a connector is provided in the middle of the power supply cable, and the power supply cable extending from the plurality of storage batteries and the power supply cable extending from the power supply controller are connected by the connector.
  • the connector includes a storage battery side connector in which a contact terminal at the tip of a power supply cable extending from a plurality of storage batteries is accommodated by a housing, and a vehicle body side connector in which a contact terminal at a tip of the power cable extends from a power supply controller is accommodated by a housing
  • the plugs of each other are detachably fitted.
  • the contact terminals on the power supply cable side extending from the plurality of storage batteries and the contact terminals on the power supply cable side extending from the power supply controller are mutually conductive (electrically connected) by fitting the connectors to each other (for example, Patent Document 1). Moreover, when connecting a storage battery and a charger, it may be connected via the connector with which a charger is equipped.
  • the housing of the storage battery side connector and the vehicle body side connector is formed with a pull-in portion at the proximal end opposite to the side where the both connectors are connected to each other in order to pull in the power cable inside the housing.
  • the power supply cable is inserted into the lead-in portion without any gap. However, since the power supply cable is generally flexible, bending the power supply cable creates a gap between the lead-in portion and the power supply cable, which may cause water to enter the housing.
  • one side of this invention aims at providing a bush, a connector, and lead acid battery which can improve waterproofness in a lead-in portion of a power cable.
  • a bush according to one aspect of the present invention is a bush used for a connector having a protection portion covering contact terminals disposed at one end of a power cable and a lead-in portion for pulling the power cable into the protection portion. Is formed along the circumferential direction of the cylindrical main body portion which extends in one direction and in which the power cable is inserted and inserted in the lead-in portion, and the inner peripheral surface of the main body portion, from the inner peripheral surface And an annular first protrusion projecting toward the end.
  • the main body portion of the bush of this configuration is formed insertably into the lead-in portion for drawing the power supply cable into the protective portion covering the contact terminal disposed at one end of the power supply cable in the connector, and the first protrusion is the main body
  • the outer peripheral surface of the power supply cable inserted in the part is formed so as to be contactable.
  • the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the main body portion.
  • the first protrusion may have flexibility.
  • the bush improves the followability of the first protrusion to the outer peripheral surface of the power cable when the power cable is inserted. Thereby, waterproofness can be improved, improving the insertability of the power supply cable to a main-body part.
  • the first protrusion may be disposed closer to the contact terminal than the central position in the extending direction of the main body.
  • the amount of bending on the contact terminal side is smaller than the amount of bending on the other end side of the power supply cable than the central position in the extending direction of the main body. That is, the amount of clearance between the inner peripheral surface of the main body and the outer peripheral surface of the power cable is small. Therefore, the contact between the first projecting portion and the outer peripheral surface of the power supply cable can be more reliably maintained.
  • a plurality of first protrusions may be arranged in the extending direction of the main body. This can further enhance the waterproofness.
  • the bush which concerns on one side of this invention may be provided along the circumferential direction of the outer peripheral surface in a main-body part, and may further be provided with the cyclic
  • the outer peripheral surface of the main body portion and the inner peripheral surface of the lead-in portion can be in close contact with each other.
  • waterproofness between the inner peripheral surface of the lead-in portion and the outer peripheral surface of the bush when the bush is inserted into the lead-in portion can be enhanced.
  • a connector according to one aspect of the present invention is a connector having a protective portion covering a contact terminal disposed at one end of a power cable, a connector having a pull-in portion for pulling the power cable into the protective portion, and the bush described above And the main body portion may be inserted into the lead-in portion.
  • the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the lead-in portion.
  • a lead storage battery includes at least one lead storage battery, a power supply cable electrically connected to the lead storage battery, and the above connector, and the power supply cable is inserted into the lead-in portion of the connector It may be done.
  • the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the lead-in portion.
  • waterproofness at the lead-in portion of the power cable can be enhanced.
  • FIG. 1 is a perspective view of a connector with a bush attached in one embodiment.
  • 2 is a perspective view of a bushing attached to the connector of FIG. 1;
  • 3 (A) is a cross-sectional view of the bush of FIG. 2;
  • FIG. 4 (B) is a rear view of the bush of FIG. 2 as viewed from the other direction.
  • FIG. 5 is an explanatory view for explaining an experimental example.
  • FIG. 6 is a cross-sectional view of a bush according to a modification.
  • a bush 20 according to an embodiment, a first connector (connector) 10 of an embodiment to which the bush 20 is attached, and a lead storage battery 1 of an embodiment equipped with the first connector 10 Will be explained.
  • the same elements will be denoted by the same reference symbols, without redundant description.
  • the extension direction of the power supply cable 3 is orthogonal to the X axis and the X axis
  • the arrangement direction of the power supply cable 3 is orthogonal to the Y axis, the X axis and the Y axis
  • the height direction of the second connector 50 is set as the Z axis.
  • the bush 20 according to one embodiment, the first connector 10 of one embodiment to which the bush 20 is attached, and the lead-acid battery 1 of one embodiment equipped with the first connector 10 are driven by, for example, electrical energy. It is mounted on vehicles such as battery forklifts.
  • the lead storage battery 1, the power supply controller 6 and the like are accommodated in the vehicle.
  • the power supply controller 6 controls the supply of electrical energy from the lead storage battery 1 to the driving electric motor and the like.
  • the lead storage battery 1 and the power supply controller 6 are electrically connected by connecting a power supply cable 3 connected to the lead storage battery 1 and a power supply cable 7 connected to the power supply controller 6.
  • the power supply cable 3 extending from the lead storage battery 1 is provided with a first connector 10 in which the contact terminal 4 at the tip thereof is accommodated by the housing 11.
  • the power supply cable 7 extending from the power supply controller 6 is provided with a second connector 50 in which the contact terminal 8 at the tip is accommodated by the housing 51.
  • the first connector 10 and the second connector 50 are provided so as to be attachable to and detachable from each other. By fitting the first connector 10 and the second connector 50 to each other, the contact terminal 4 on the side of the power cable 3 extending from the lead storage battery 1 and the contact terminal 8 on the side of the power cable 7 extending from the power controller 6 mutually Conducted (electrically connected).
  • the cable which is excellent in conductivity is used for the power supply cable 3, and the example of the electrical resistance is 0.4 m ⁇ or less at 200 mm.
  • a member having excellent conductivity is preferably used as the contact terminal 4 provided at the end of the power supply cable 3, and an example of the electric resistance thereof is 0.4 m ⁇ or less at 200 mm.
  • the cable having excellent conductivity include rubber-based cabtire cables such as PNCT, CT, WNCT, WRNCT and the like.
  • An example of the size in the width direction (Y-axis direction) orthogonal to the extension direction (X-axis direction) of the power cable 3 in the first connector 10 is 50 mm to 100 mm, and the extension direction of the power cable 3 (X-axis direction)
  • An example of the size of is 50 mm to 200 mm, and an example of the size of the width direction and the height direction (Z-axis direction) orthogonal to the extension direction of the power cable 3 is 20 mm to 70 mm.
  • the first connector 10 is preferably formed of a material that is excellent in acid resistance, heat resistance, and insulation.
  • the first connector 10 has an acid resistance so as not to be attacked by sulfuric acid having a specific gravity of 1.120 to 1.800 (at 20 ° C.).
  • the first connector 10 has heat resistance that does not melt at 100 ° C. or higher.
  • the first connector 10 preferably has an insulation property of 1000 M ⁇ or more, and more preferably 500 M ⁇ or more.
  • resins such as PE (polyethylene), PP (polypropylene), PC (polycarbonate), PBT (polybutylene terephthalate) and the like.
  • the first connector 10 includes a housing 11 having a protective portion 12 covering the contact terminal 4 disposed at one end of the power cable 3 and a lead-in portion 13 for pulling the power cable 3 into the protective portion 12.
  • the protective portion 12 has a housing portion 12 a for housing the contact terminal 4 and a part of the power supply cable 3.
  • the protective portion 12 is provided with a spring piece (not shown) for supporting the contact terminal 4. It is preferable that a member excellent in conductivity be used for the spring piece, and an example of the electric resistance is 0.4 m ⁇ or less at 200 mm. Examples of materials that form the spring pieces include stainless steel, copper, silver, or an alloy containing these. Moreover, based on these materials, plating processing, such as silver, may be made, for example.
  • the protective portion 12 is formed to be engageable with the protective portion 52 of the second connector 50.
  • the lead-in portion 13 has an inner space portion 13 a into which the power supply cable 3 is inserted along the extension direction of the power supply cable 3.
  • the power supply cable 3 is inserted into the lead-in portion 13 via the bush 20.
  • the two lead-in portions 13 are arranged in the direction intersecting the extending direction of the power supply cable 3.
  • the first connector 10 is formed with a set of lead-in portions 13.
  • the bush 20 is attached to the lead-in portion 13 as shown in FIG.
  • the bush 20 is preferably formed of a material that is excellent in heat resistance, insulation, elasticity, and flexibility.
  • the bush 20 preferably has such heat resistance that it does not melt at 100 ° C. or higher.
  • the bush 20 has insulation whose surface resistance is 1000 M (ohm) or more.
  • preferable materials for forming the bush 20 include HNBR (hydrogenated nitrile rubber), FKM (fluorinated rubber), VMQ (silicon rubber), ACM (acrylic rubber), CO (epichlorohydrin rubber) and the like.
  • the bush 20 is provided with a main body 21 and a lid 28. It is done.
  • One main body portion 21 has an annular first rib (first projecting portion) 23 and an annular second rib (second projecting portion).
  • the main body portion 21 is a cylindrical member extending in the X-axis direction (one direction) in which the power supply cable 3 extends, and inserted into the lead-in portion 13 of the first connector 10 while the power supply cable 3 is inserted. .
  • Two main body portions 21 are provided in the Y-axis direction orthogonal to the X-axis direction in which the power supply cable 3 extends.
  • the bush 20 is provided with a pair of main body portions 21, 21.
  • Each of the pair of body portions 21 has an inner circumferential surface 22 forming an inner space 21a into which the power supply cable 3 is inserted along the extension direction.
  • the diameter of the inner space portion 21a (the diameter of the inner space of the main body portion 21) is formed to be the same as the diameter of the power supply cable 3, and an example thereof is 14.0 mm to 21.5 mm.
  • the annular first rib 23 is formed along the circumferential direction of the inner peripheral surface 22 of the main body portion 21 and protrudes inward from the inner peripheral surface 22.
  • the first rib 23 is flexible.
  • Five first ribs 23 are arranged in the extending direction of the main body 21.
  • the number of arrangement of the first ribs 23 may be four or less, or six or more.
  • the width (length in the X-axis direction) of the first rib 23 is, for example, 0.5 mm to 6.0 mm, and the amount of protrusion from the inner circumferential surface 22 is, for example, 0.5 mm to 3.5 mm It is.
  • the annular second rib 26 is formed along the circumferential direction of the outer peripheral surface 25 of the main body 21 and protrudes outward from the outer peripheral surface 25.
  • the second rib 26 is flexible.
  • Three second ribs 26 are arranged in the extending direction of the main body 21.
  • the number of arrangement of the second ribs 26 may be two or less, or four or more.
  • the width (length in the X-axis direction) of the second rib 26 is, for example, 0.5 mm to 4.0 mm, and the amount of protrusion from the outer peripheral surface 25 is, for example, 0.5 mm to 2.5 mm. is there.
  • the lid portion 28 is a flat plate-like member in which a pair of main body portions 21 and 21 is formed.
  • An example of the thickness (size in the X direction) of the lid portion 28 is 0.5 mm to 15 mm.
  • the lid portion 28 has a ridge portion which does not overlap in plan with the main body portions 21 and 21 when viewed from the direction (X-axis direction) orthogonal to the lid portion 28. ing.
  • the two main body portions 21, 21 of the bush 20 are inserted into the inner space 13 a of the lead-in portion 13 of the first connector 10. Then, by pushing the first surface 28c on the main body 21 side of the flange portion of the bush 20 into contact with the end 10b (see FIG. 1) of the first connector 10, the bush to the first connector 10 is 20 installation is complete.
  • the power supply cable 3 is inserted from the second surface 28a side opposite to the first surface 28c of the lid 28 The insertion is continued until the contact terminal 4 at the third end reaches the protective portion 12. Then, the contact terminal 4 reaching the protective portion 12 is supported by the protective portion 12 by a spring piece (not shown). Thereby, the lead storage battery 1 equipped with the first connector 10 to which the bush 20 is attached is completed.
  • the second connector 50 formed to be insertable into and removable from the first connector 10 may also have the same configuration as the first connector 10.
  • a bush 20A having the same configuration as the bush 20 attached to the first connector 10 may be attached.
  • the second connector 50 includes a protective portion 52 covering the contact terminal 8 disposed at one end of the power cable 7, and a lead-in portion 53 for pulling the power cable 7 into the protective portion 52.
  • a housing 51 having the The protection unit 52 includes a housing 52 a for housing the contact terminal 8 and a part of the power cable 7.
  • the protective portion 52 is provided with a spring piece (not shown) for supporting the contact terminal 8.
  • the protective portion 52 is formed to be engageable with the protective portion 12 of the first connector 10.
  • the lead-in portion 53 has an inner space portion 53 a into which the power supply cable 7 is inserted along the extending direction of the power supply cable 7.
  • the power supply cable 7 is inserted into the lead-in portion 53 via the bush 20A.
  • the two lead-in portions 53 are arranged in the direction intersecting the extending direction of the power supply cable 7.
  • the second connector 50 is formed with a set of lead-in portions 53.
  • the bush 20A is attached to the lead-in portion 53.
  • the bush 20A attached to the second connector 50 also includes the main body 21 and the lid. A section 28 is provided.
  • the first main body portion 21 is the same as the configuration having the annular first rib (first projecting portion) 23 and the annular second rib (second projecting portion), and is adapted to the size of the second connector 50. It has been resized.
  • the example of the material which forms the bush 20A is the same as that of the bush 20, detailed description here is abbreviate
  • the main body portion 21 of the bush 20 of the above embodiment has the power cable 3 connected to the protective portion 12 covering the contact terminal 4 disposed at one end of the power cable 3 in the first connector 10.
  • the first rib 23 is formed so as to be insertable into the lead-in portion 13, and as shown in FIG. 3A, the first rib 23 is formed so as to be in contact with the outer peripheral surface 3a of the power cable 3 inserted into the main body portion 21 There is. Therefore, the outer peripheral surface 3 a of the power supply cable 3 is disposed in contact with the first rib 23 formed on the inner peripheral surface 22 of the main body 21.
  • the first connector 10 of one embodiment to which the bush 20 of one embodiment is attached even if the power cable 3 is bent, the first rib 23 and the power cable which protrude from the inner peripheral surface 22 of the main body 21 By being able to maintain the contact with the outer peripheral surface 3a of 3, it is excellent in not only waterproofness but also dust resistance and safety.
  • the followability of the first rib 23 to the outer peripheral surface 3 a of the power cable 3 when the power cable 3 is inserted is improved.
  • waterproofness can be improved, improving the insertability of the power supply cable 3 to the main-body part 21.
  • first ribs 23 are arranged in the extending direction (X-axis direction) of the main body portion 21. Therefore, compared with the case where one first rib 23 is arranged, the first ribs 23 are more waterproof. Can be enhanced.
  • the bush 20 of the above embodiment is formed along the circumferential direction of the outer peripheral surface 25 of the main body portion 21, and further includes an annular second rib 26 projecting outward from the outer peripheral surface 25.
  • the outer peripheral surface 25 of the main body 21 and the inner peripheral surface 13 b of the lead-in portion 13 can be in close contact with each other.
  • waterproofness between the lead-in portion 13 and the bush 20 when the bush 20 is inserted into the lead-in portion 13 can be enhanced.
  • three second ribs 26 are arranged in the extending direction of the main body portion 21 (X-axis direction), so it is more waterproof than in the case where one second rib 26 is arranged. Can be enhanced.
  • Power cable type WNCT 50SQ manufactured by Fuji Electric Wire Co., Ltd., diameter: 15.7 mm
  • Bushing Material Ethylene propylene rubber (EPDM) (Hardness 50)
  • Inner diameter of the main body into which the power cable is inserted 18.0 mm
  • outer diameter of the main body 29.2 mm
  • height of the first rib formed on the main body 1.0 mm
  • Installation interval of the first rib 4 mm
  • the first connector 10 (hereinafter, referred to as a test product) to which the same bush 20 as that of the above embodiment was attached was prepared and installed on the attachment jig 100 as shown in FIG. Specifically, a first condition for fixing the case 11 vertically so that the bush 20 of the sample is at the upper end, and a second condition for fixing the case 11 at an angle of 10 degrees with respect to the vertical surface
  • the sample was placed on the mounting jig 100 in accordance with.
  • the opening on the side of the contact terminal 4 was sealed by the sealing means.
  • Tests were conducted on the test products installed under the above first and second conditions in accordance with “JIS C0920: 2003 Protection class by outer shell of electric machine appliance (IP23)”. Specifically, three types of protection tests shown below were conducted. The contents and summary of the three types of protection tests are as follows.
  • Test 1 Protection of the human body against approaching dangerous places in the shell It is a test of protection against approaching to dangerous places with fingers, and it is a jointed test with a diameter of 12 mm and a length of 80 mm. It is a test of whether or not the appropriate spatial distance is secured between the tip of the finger (proximity inspection probe) and the dangerous place.
  • the proximity inspection probe is inserted with a pressing force of 10 N ⁇ 1 N into the gap (opening) between the lead-in portion 13 and the power cable 3 in the bush 20 of the test product.
  • Test 2 Protection of electrical equipment in outer shell against intrusion of solid from outside This test is to test for protection against foreign solid with a diameter of 12.5 mm or more, and spherical with a diameter of 12.5 mm. It is a test of whether or not the whole solid substance probe penetrates.
  • a solid substance probe which is a steel ball with a diameter of 12.5 mm to 12.7 mm, is applied to a gap (opening) between the lead-in portion 13 and the power cable 3 in the bush 20 of the test product. Inserted in
  • Test 3 Protection of electrical equipment in the shell against the harmful effects of water infiltration It is a test of protection against water spray and it is also harmful by water sprayed at an angle of up to 60 degrees from the vertical. It is a test of whether it is affected or not. In this example, the test was performed using a water spray nozzle (JIS C0920: 2003 attached FIG. 5 IPX3).
  • the water sprinkling rate is 10 L ⁇ 0.5 L
  • the water sprinkling angle is ⁇ 60 degrees with respect to the vertical direction
  • the water pressure on the inflow side is set by the water sprinkling rate
  • the distance from the nozzle to the outer surface of the sample was 300 mm to 500 mm
  • the test time was 1 minute / m 2 (minimum 5 minutes).
  • a plurality of first ribs 23 are arrayed in the extending direction of the main body portion 21 and formed at equal intervals in the entire extending direction (X-axis direction) of the inner peripheral surface 22 of the main body portion 21
  • a plurality may be disposed only on the side of the contact terminal 4 than the central position in the extending direction of the main body 21 (see FIG. 6), or one may be disposed.
  • the first rib 23 may not be formed on the side of the lead storage battery 1 with respect to the center position in the extending direction of the main body 21.
  • the bending amount on the contact terminal 4 side with respect to the central position in the extension direction (X-axis direction) of the main body 21 is the other It becomes smaller than the amount of bending of the end side (lead storage battery 1 side) of That is, the amount of clearance between the inner peripheral surface 22 of the main body 21 and the outer peripheral surface 3 a of the power supply cable 3 is small. For this reason, in the bush 20B which concerns on a modification, contact with the 1st rib 23 and the outer peripheral surface 3a of the power supply cable 3 can be maintained more reliably.
  • the first rib 23 has been described by way of an example having flexibility, but may not have flexibility. Even in this case, the waterproofness can be enhanced as compared with the case where the first rib 23 is not formed on the inner peripheral surface 22 of the main body portion 21.
  • the said embodiment or modification gave and demonstrated the example which the shape of the outer peripheral surface 25 of the main-body part 21 is circular (cross-sectional circular) seeing from an X-axis direction, it may be a rectangle or it is an ellipse
  • the shape may be a curve or a straight line.
  • the shape of the lid portion 28 is not limited to the above embodiment or the example of the modification, and may be circular as viewed from the X-axis direction, or may be elliptical, and is formed of straight lines and curves. It may be shaped.
  • the said embodiment or modification gave and demonstrated the example in which the 2nd rib 26 was formed in the outer peripheral surface 25 of the main-body part 21, the 2nd rib 26 of the outer peripheral surface 25 does not need to be formed. Further, the outer peripheral surface 25 of the main body portion 21 and the inner peripheral surface 13 b of the lead-in portion 13 in the bush 20 may be adhered by an adhesive, or a sheet-like member may be disposed.
  • SYMBOLS 1 ... Lead storage battery, 3 ... Power supply cable, 3a ... Outer peripheral surface, 4 ... Contact terminal, 6 ... Power supply controller, 7 ... Power supply cable, 8 ... Contact terminal, 10 ... 1st connector (connector), 11 ... Housing

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

A bush (20) used in a connector having: a protective section (12) covering a contact terminal (4) arranged at one end of a power cable (3); and a draw-in unit (13) that draws the power cable into the protective section. The bush comprises: cylindrical main body sections (21) that extend in one direction, have the power cable inserted therein, and are inserted into the draw-in unit; and annular first ribs (23) formed along the circumferential direction of an inner circumferential surface (22) in the main bodies and protruding inwards from the inner circumferential surface.

Description

ブッシュ、コネクタ及び鉛蓄電池Bush, connector and lead storage battery
　本発明の一側面は、電源ケーブル同士を接続するコネクタに用いられるブッシュ、これを備えたコネクタ、及びこのコネクタを備えた鉛蓄電池に関する。 One aspect of the present invention relates to a bush used for a connector for connecting power cables, a connector provided with the same, and a lead-acid battery provided with the connector.
　複数の蓄電池に充電された電力により駆動する車両では、複数の蓄電池と電源コントローラとが電源ケーブルによって電気的に接続されている。電源ケーブルの途中にはコネクタが設けられ、複数の蓄電池から延びる電源ケーブルと、電源コントローラから延びる電源ケーブルとがコネクタによって接続される。コネクタは、複数の蓄電池から延びる電源ケーブル先端の接触端子が筐体によって収容された蓄電池側コネクタと、電源コントローラから延びる電源ケーブル先端の接触端子が筐体によって収容された車体側コネクタとがあり、互いのプラグが挿抜自在に嵌合される。複数の蓄電池から延びる電源ケーブル側の接触端子と、電源コントローラから延びる電源ケーブル側の接触端子とは、互いのコネクタが嵌合されることによって、互いに導通（電気的に接続）される（例えば、特許文献１）。また、蓄電池と充電器とを接続する場合にも、充電器に備わるコネクタを介して接続されることがある。 In a vehicle driven by electric power charged in a plurality of storage batteries, a plurality of storage batteries and a power supply controller are electrically connected by a power cable. A connector is provided in the middle of the power supply cable, and the power supply cable extending from the plurality of storage batteries and the power supply cable extending from the power supply controller are connected by the connector. The connector includes a storage battery side connector in which a contact terminal at the tip of a power supply cable extending from a plurality of storage batteries is accommodated by a housing, and a vehicle body side connector in which a contact terminal at a tip of the power cable extends from a power supply controller is accommodated by a housing The plugs of each other are detachably fitted. The contact terminals on the power supply cable side extending from the plurality of storage batteries and the contact terminals on the power supply cable side extending from the power supply controller are mutually conductive (electrically connected) by fitting the connectors to each other (for example, Patent Document 1). Moreover, when connecting a storage battery and a charger, it may be connected via the connector with which a charger is equipped.
特開２０１０－２６２８４５号公報JP, 2010-262845, A
　蓄電池側コネクタ及び車体側コネクタの筐体には、両コネクタが互いに接続される側とは反対側の基端部において、筐体内部に電源ケーブルを引き込むため引込部が形成されている。電源ケーブルは、当該引込部に隙間無く挿入される。しかしながら、電源ケーブルは一般的に可撓性を有しているため、電源ケーブルが曲げられることによって、引込部と電源ケーブルとの間に隙間が生じ、筐体内に水が侵入するおそれがある。 The housing of the storage battery side connector and the vehicle body side connector is formed with a pull-in portion at the proximal end opposite to the side where the both connectors are connected to each other in order to pull in the power cable inside the housing. The power supply cable is inserted into the lead-in portion without any gap. However, since the power supply cable is generally flexible, bending the power supply cable creates a gap between the lead-in portion and the power supply cable, which may cause water to enter the housing.
　そこで、本発明の一側面は、電源ケーブルの引込部における防水性を高めることができる、ブッシュ、コネクタ及び鉛蓄電池を提供することを目的とする。 Then, one side of this invention aims at providing a bush, a connector, and lead acid battery which can improve waterproofness in a lead-in portion of a power cable.
　本発明の一側面に係るブッシュは、電源ケーブルの一方の端部に配置される接触端子を覆う保護部と、保護部に電源ケーブルを引き込む引込部と、を有するコネクタに用いられる、ブッシュであって、一方向に延在し、電源ケーブルが内挿されると共に引込部に内挿される筒状の本体部と、本体部における内周面の周方向に沿って形成され、内周面から内側に向かって突出する環状の第一突出部と、を備える。 A bush according to one aspect of the present invention is a bush used for a connector having a protection portion covering contact terminals disposed at one end of a power cable and a lead-in portion for pulling the power cable into the protection portion. Is formed along the circumferential direction of the cylindrical main body portion which extends in one direction and in which the power cable is inserted and inserted in the lead-in portion, and the inner peripheral surface of the main body portion, from the inner peripheral surface And an annular first protrusion projecting toward the end.
　この構成のブッシュの本体部は、コネクタにおいて電源ケーブルの一方の端部に配置される接触端子を覆う保護部に電源ケーブルを引き込む引込部に内挿可能に形成され、第一突出部は、本体部に内挿される電源ケーブルの外周面に接触可能に形成されている。本構成のブッシュによれば、電源ケーブルの外周面は、本体部の内周面に形成されている第一突出部に接触配置される。これにより、電源ケーブルが曲げられたとしても、本体部の内周面から突出する第一突出部と、電源ケーブルの外周面との接触を維持できる。この結果、電源ケーブルの引込部における防水性を高めることができる。 The main body portion of the bush of this configuration is formed insertably into the lead-in portion for drawing the power supply cable into the protective portion covering the contact terminal disposed at one end of the power supply cable in the connector, and the first protrusion is the main body The outer peripheral surface of the power supply cable inserted in the part is formed so as to be contactable. According to the bush of this configuration, the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the main body portion. Thereby, even if the power supply cable is bent, the contact between the first protrusion projecting from the inner peripheral surface of the main body and the outer peripheral surface of the power supply cable can be maintained. As a result, the waterproofness at the lead-in portion of the power cable can be enhanced.
　本発明の一側面に係るブッシュでは、第一突出部は、可撓性を有していてもよい。このブッシュは、電源ケーブルの挿入時における電源ケーブルの外周面への第一突出部の追随性がよくなる。これにより、本体部への電源ケーブルの挿入性を高めつつ、防水性を高めることができる。 In the bush according to one aspect of the present invention, the first protrusion may have flexibility. The bush improves the followability of the first protrusion to the outer peripheral surface of the power cable when the power cable is inserted. Thereby, waterproofness can be improved, improving the insertability of the power supply cable to a main-body part.
　本発明の一側面に係るブッシュでは、第一突出部は、本体部の延在方向における中心位置よりも接触端子側に配置されていてもよい。本体部に引き込まれる電源ケーブルでは、本体部の延在方向における中心位置よりも接触端子側の曲げ量は、前記電源ケーブルの他方の端部側の曲げ量に比べて小さくなる。すなわち、本体部の内周面と電源ケーブルの外周面との隙間量が小さい。このため、第一突出部と電源ケーブルの外周面との接触をより確実に維持することができる。 In the bush according to one aspect of the present invention, the first protrusion may be disposed closer to the contact terminal than the central position in the extending direction of the main body. In the power supply cable drawn into the main body, the amount of bending on the contact terminal side is smaller than the amount of bending on the other end side of the power supply cable than the central position in the extending direction of the main body. That is, the amount of clearance between the inner peripheral surface of the main body and the outer peripheral surface of the power cable is small. Therefore, the contact between the first projecting portion and the outer peripheral surface of the power supply cable can be more reliably maintained.
　本発明の一側面に係るブッシュでは、第一突出部は、本体部の延在方向に複数配列されていてもよい。これにより、より一層防水性を高めることができる。 In the bush according to one aspect of the present invention, a plurality of first protrusions may be arranged in the extending direction of the main body. This can further enhance the waterproofness.
　本発明の一側面に係るブッシュは、本体部における外周面の周方向に沿って形成され、外周面から外側に向かって突出する環状の第二突出部を更に備えてもよい。これにより、本体部の外周面と引込部の内周面とを密に接触させることができる。この結果、引込部にブッシュを挿入した場合の引込部の内周面とブッシュの外周面との間の防水性を高めることができる。 The bush which concerns on one side of this invention may be provided along the circumferential direction of the outer peripheral surface in a main-body part, and may further be provided with the cyclic | annular 2nd protrusion part which protrudes toward an outer side from an outer peripheral surface. Thereby, the outer peripheral surface of the main body portion and the inner peripheral surface of the lead-in portion can be in close contact with each other. As a result, waterproofness between the inner peripheral surface of the lead-in portion and the outer peripheral surface of the bush when the bush is inserted into the lead-in portion can be enhanced.
　本発明の一側面に係るコネクタは、電源ケーブルの一方の端部に配置される接触端子を覆う保護部と、保護部に電源ケーブルを引き込む引込部と、を有するコネクタと、上記のブッシュと、を備え、本体部は、引込部に内挿されていてもよい。 A connector according to one aspect of the present invention is a connector having a protective portion covering a contact terminal disposed at one end of a power cable, a connector having a pull-in portion for pulling the power cable into the protective portion, and the bush described above And the main body portion may be inserted into the lead-in portion.
　この構成のコネクタによれば、電源ケーブルの外周面は、引込部の内周面に形成された第一突出部に接触配置される。これにより、電源ケーブルが曲げられたとしても、本体部の内周面から突出する第一突出部と、電源ケーブルの外周面との接触を維持できる。この結果、電源ケーブルの引込部における防水性を高めることができる。 According to the connector of this configuration, the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the lead-in portion. Thereby, even if the power supply cable is bent, the contact between the first protrusion projecting from the inner peripheral surface of the main body and the outer peripheral surface of the power supply cable can be maintained. As a result, the waterproofness at the lead-in portion of the power cable can be enhanced.
　本発明の一側面に係る鉛蓄電池は、少なくとも一つの鉛蓄電池と、鉛蓄電池と電気的に接続される電源ケーブルと、上記のコネクタと、を備え、電源ケーブルは、コネクタの引込部に内挿されていてもよい。 A lead storage battery according to one aspect of the present invention includes at least one lead storage battery, a power supply cable electrically connected to the lead storage battery, and the above connector, and the power supply cable is inserted into the lead-in portion of the connector It may be done.
　この構成の鉛蓄電池によれば、電源ケーブルの外周面は、引込部の内周面に形成された第一突出部に接触配置される。これにより、電源ケーブルが曲げられたとしても、本体部の内周面から突出する第一突出部と、電源ケーブルの外周面との接触を維持できる。この結果、電源ケーブルの引込部における防水性を高めることができる。 According to the lead storage battery of this configuration, the outer peripheral surface of the power supply cable is disposed in contact with the first projecting portion formed on the inner peripheral surface of the lead-in portion. Thereby, even if the power supply cable is bent, the contact between the first protrusion projecting from the inner peripheral surface of the main body and the outer peripheral surface of the power supply cable can be maintained. As a result, the waterproofness at the lead-in portion of the power cable can be enhanced.
　本発明の一側面によれば、電源ケーブルの引込部における防水性を高めることができる。 According to one aspect of the present invention, waterproofness at the lead-in portion of the power cable can be enhanced.
図１は、一実施形態のブッシュが取り付けられたコネクタの斜視図である。FIG. 1 is a perspective view of a connector with a bush attached in one embodiment. 図２は、図１のコネクタに取り付けられたブッシュの斜視図である。2 is a perspective view of a bushing attached to the connector of FIG. 1; 図３（Ａ）は、図２のブッシュの断面図であり、図３（Ｂ）は、図２のブッシュの側面図である。3 (A) is a cross-sectional view of the bush of FIG. 2, and FIG. 3 (B) is a side view of the bush of FIG. 図４（Ａ）は、図２のブッシュを一方向から見た正面図であり、図４（Ｂ）は、図２のブッシュを他方向から見た背面図である。4 (A) is a front view of the bush of FIG. 2 as viewed from one direction, and FIG. 4 (B) is a rear view of the bush of FIG. 2 as viewed from the other direction. 図５は、実験例を説明するための説明図である。FIG. 5 is an explanatory view for explaining an experimental example. 図６は、変形例に係るブッシュの断面図である。FIG. 6 is a cross-sectional view of a bush according to a modification.
　以下、図面を参照して一実施形態に係るブッシュ２０、当該ブッシュ２０が取り付けられた一実施形態の第一コネクタ（コネクタ）１０、及び当該第一コネクタ１０を装備した一実施形態の鉛蓄電池１について説明する。図面の説明において、同一要素には同一符号を付し、重複する説明を省略する。なお、説明の便宜のため、電源ケーブル３の延在方向をＸ軸、Ｘ軸に直交すると共に電源ケーブル３が配列される方向をＹ軸、Ｘ軸及びＹ軸に直交すると共に第一コネクタ１０及び第二コネクタ５０の高さ方向をＺ軸と設定した。 Hereinafter, referring to the drawings, a bush 20 according to an embodiment, a first connector (connector) 10 of an embodiment to which the bush 20 is attached, and a lead storage battery 1 of an embodiment equipped with the first connector 10 Will be explained. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. For convenience of explanation, the extension direction of the power supply cable 3 is orthogonal to the X axis and the X axis, and the arrangement direction of the power supply cable 3 is orthogonal to the Y axis, the X axis and the Y axis, and the first connector 10 The height direction of the second connector 50 is set as the Z axis.
　一実施形態に係るブッシュ２０、当該ブッシュ２０が取り付けられた一実施形態の第一コネクタ１０、及び当該第一コネクタ１０を装備した一実施形態の鉛蓄電池１は、例えば、電気エネルギで駆動されるバッテリフォークリフト等の車両に搭載される。 The bush 20 according to one embodiment, the first connector 10 of one embodiment to which the bush 20 is attached, and the lead-acid battery 1 of one embodiment equipped with the first connector 10 are driven by, for example, electrical energy. It is mounted on vehicles such as battery forklifts.
　図１に示されるように、上記車両には、鉛蓄電池１、電源コントローラ６等が収容されている。電源コントローラ６は、鉛蓄電池１から駆動用の電動モータ等への電気エネルギの供給を制御する。鉛蓄電池１と電源コントローラ６とは、鉛蓄電池１に接続される電源ケーブル３と、電源コントローラ６に接続される電源ケーブル７とを接続することによって電気的に接続される。 As shown in FIG. 1, the lead storage battery 1, the power supply controller 6 and the like are accommodated in the vehicle. The power supply controller 6 controls the supply of electrical energy from the lead storage battery 1 to the driving electric motor and the like. The lead storage battery 1 and the power supply controller 6 are electrically connected by connecting a power supply cable 3 connected to the lead storage battery 1 and a power supply cable 7 connected to the power supply controller 6.
　鉛蓄電池１から延びる電源ケーブル３には、その先端の接触端子４が筐体１１によって収容された第一コネクタ１０が設けられている。電源コントローラ６から延びる電源ケーブル７には、その先端の接触端子８が筐体５１によって収容された第二コネクタ５０が設けられている。第一コネクタ１０と第二コネクタ５０とは、互いに挿抜可能かつ篏合可能に設けられている。第一コネクタ１０と第二コネクタ５０とを互いに嵌合させることにより、鉛蓄電池１から延びる電源ケーブル３側の接触端子４と、電源コントローラ６から延びる電源ケーブル７側の接触端子８とが、互いに導通（電気的に接続）される。 The power supply cable 3 extending from the lead storage battery 1 is provided with a first connector 10 in which the contact terminal 4 at the tip thereof is accommodated by the housing 11. The power supply cable 7 extending from the power supply controller 6 is provided with a second connector 50 in which the contact terminal 8 at the tip is accommodated by the housing 51. The first connector 10 and the second connector 50 are provided so as to be attachable to and detachable from each other. By fitting the first connector 10 and the second connector 50 to each other, the contact terminal 4 on the side of the power cable 3 extending from the lead storage battery 1 and the contact terminal 8 on the side of the power cable 7 extending from the power controller 6 mutually Conducted (electrically connected).
　電源ケーブル３は、導電性に優れるケーブルが用いられることが好ましく、その電気抵抗の例は、２００ｍｍで０．４ｍΩ以下である。電源ケーブル３の先端に設けられる接触端子４も、電源ケーブル３と同様に、導電性に優れる部材が用いられることが好ましく、その電気抵抗の例は、２００ｍｍで０．４ｍΩ以下である。これら導電性に優れるケーブルの例には、ＰＮＣＴ、ＣＴ、ＷＮＣＴ、ＷＲＮＣＴ等のゴム系キャブタイヤケーブルが含まれる。 It is preferable that the cable which is excellent in conductivity is used for the power supply cable 3, and the example of the electrical resistance is 0.4 mΩ or less at 200 mm. Similarly to the power supply cable 3, a member having excellent conductivity is preferably used as the contact terminal 4 provided at the end of the power supply cable 3, and an example of the electric resistance thereof is 0.4 mΩ or less at 200 mm. Examples of the cable having excellent conductivity include rubber-based cabtire cables such as PNCT, CT, WNCT, WRNCT and the like.
　第一コネクタ１０における電源ケーブル３の延在方向（Ｘ軸方向）に直交する幅方向（Ｙ軸方向）のサイズの例は５０ｍｍ～１００ｍｍであり、電源ケーブル３の延在方向（Ｘ軸方向）のサイズの例は５０ｍｍ～２００ｍｍであり、幅方向及び電源ケーブル３の延在方向に直交する高さ方向（Ｚ軸方向）のサイズの例は２０ｍｍ～７０ｍｍである。 An example of the size in the width direction (Y-axis direction) orthogonal to the extension direction (X-axis direction) of the power cable 3 in the first connector 10 is 50 mm to 100 mm, and the extension direction of the power cable 3 (X-axis direction) An example of the size of is 50 mm to 200 mm, and an example of the size of the width direction and the height direction (Z-axis direction) orthogonal to the extension direction of the power cable 3 is 20 mm to 70 mm.
　第一コネクタ１０は、耐酸性、耐熱性、及び絶縁性に優れる材料から形成されることが好ましい。例えば、第一コネクタ１０は、比重１．１２０～１．８００（ａｔ２０℃）の硫酸に侵されないような耐酸性を有することが好ましい。また、第一コネクタ１０は、１００℃以上で融解しないような耐熱性を有することが好ましい。また、第一コネクタ１０は、表面抵抗が１０００ＭΩ以上の絶縁性を有することが好ましく、５００ＭΩ以上の絶縁性を有することがより好ましい。第一コネクタ１０を形成する好ましい材料の例には、ＰＥ（ポリエチレン）、ＰＰ（ポリプロピレン）、ＰＣ（ポリカーボネート）、ＰＢＴ（ポリブチレンテレフタレート）等の樹脂が含まれる。 The first connector 10 is preferably formed of a material that is excellent in acid resistance, heat resistance, and insulation. For example, it is preferable that the first connector 10 has an acid resistance so as not to be attacked by sulfuric acid having a specific gravity of 1.120 to 1.800 (at 20 ° C.). Moreover, it is preferable that the first connector 10 has heat resistance that does not melt at 100 ° C. or higher. Further, the first connector 10 preferably has an insulation property of 1000 MΩ or more, and more preferably 500 MΩ or more. Examples of preferred materials for forming the first connector 10 include resins such as PE (polyethylene), PP (polypropylene), PC (polycarbonate), PBT (polybutylene terephthalate) and the like.
　第一コネクタ１０は、電源ケーブル３の一方の端部に配置される接触端子４を覆う保護部１２と、保護部１２に電源ケーブル３を引き込む引込部１３と、を有する筐体１１を備える。保護部１２は、接触端子４及び電源ケーブル３の一部を収容する収容部１２ａを有する。保護部１２には、接触端子４を支持するバネ片（図示せず）が設けられている。バネ片は、導電性に優れる部材が用いられることが好ましく、その電気抵抗の例は、２００ｍｍで０．４ｍΩ以下である。バネ片を形成する材料の例には、ステンレススチール、銅、銀、又はこれらを含む合金が含まれる。また、これらの材料をベースとして、例えば銀等のメッキ処理がなされていてもよい。保護部１２は、第二コネクタ５０の保護部５２と嵌合可能に形成されている。 The first connector 10 includes a housing 11 having a protective portion 12 covering the contact terminal 4 disposed at one end of the power cable 3 and a lead-in portion 13 for pulling the power cable 3 into the protective portion 12. The protective portion 12 has a housing portion 12 a for housing the contact terminal 4 and a part of the power supply cable 3. The protective portion 12 is provided with a spring piece (not shown) for supporting the contact terminal 4. It is preferable that a member excellent in conductivity be used for the spring piece, and an example of the electric resistance is 0.4 mΩ or less at 200 mm. Examples of materials that form the spring pieces include stainless steel, copper, silver, or an alloy containing these. Moreover, based on these materials, plating processing, such as silver, may be made, for example. The protective portion 12 is formed to be engageable with the protective portion 52 of the second connector 50.
　引込部１３は、電源ケーブル３の延在方向に沿って電源ケーブル３を内挿する内空部１３ａを有する。本実施形態では、電源ケーブル３は、ブッシュ２０を介して引込部１３に内挿される。引込部１３は、電源ケーブル３の延在方向に交差する方向に二つ配列されている。言い換えれば、第一コネクタ１０には、一組の引込部１３が形成されている。引込部１３には、図２に示されるような、ブッシュ２０が取り付けられる。 The lead-in portion 13 has an inner space portion 13 a into which the power supply cable 3 is inserted along the extension direction of the power supply cable 3. In the present embodiment, the power supply cable 3 is inserted into the lead-in portion 13 via the bush 20. The two lead-in portions 13 are arranged in the direction intersecting the extending direction of the power supply cable 3. In other words, the first connector 10 is formed with a set of lead-in portions 13. The bush 20 is attached to the lead-in portion 13 as shown in FIG.
　ブッシュ２０は、耐熱性、絶縁性、弾性、及び柔軟性に優れる材料から形成されることが好ましい。例えば、ブッシュ２０は、１００℃以上で融解しないような耐熱性を有することが好ましい。また、ブッシュ２０は、表面抵抗が１０００ＭΩ以上の絶縁性を有することが好ましい。ブッシュ２０を形成する好ましい材料の例には、ＨＮＢＲ（水素化ニトリルゴム）、ＦＫＭ（フッ素ゴム）、ＶＭＱ（シリコンゴム）、ＡＣＭ（アクリルゴム）、ＣＯ（エピクロロヒドリンゴム）等が含まれる。 The bush 20 is preferably formed of a material that is excellent in heat resistance, insulation, elasticity, and flexibility. For example, the bush 20 preferably has such heat resistance that it does not melt at 100 ° C. or higher. Moreover, it is preferable that the bush 20 has insulation whose surface resistance is 1000 M (ohm) or more. Examples of preferable materials for forming the bush 20 include HNBR (hydrogenated nitrile rubber), FKM (fluorinated rubber), VMQ (silicon rubber), ACM (acrylic rubber), CO (epichlorohydrin rubber) and the like.
　ブッシュ２０には、図２、図３（Ａ）、図３（Ｂ）、図４（Ａ）、及び図４（Ｂ）に示されるように、本体部２１と、蓋部２８と、が設けられている。一の本体部２１は、環状の第一リブ（第一突出部）２３と、環状の第二リブ（第二突出部）と、を有する。 As shown in FIG. 2, FIG. 3 (A), FIG. 3 (B), FIG. 4 (A) and FIG. 4 (B), the bush 20 is provided with a main body 21 and a lid 28. It is done. One main body portion 21 has an annular first rib (first projecting portion) 23 and an annular second rib (second projecting portion).
　本体部２１は、電源ケーブル３が延在するＸ軸方向（一方向）に延在し、電源ケーブル３が内挿されると共に第一コネクタ１０の引込部１３に内挿される筒状の部材である。本体部２１は、電源ケーブル３が延在するＸ軸方向と直交するＹ軸方向に二つ設けられている。言い換えれば、ブッシュ２０には、一組の本体部２１，２１が設けられている。一組の本体部２１のそれぞれは、電源ケーブル３をその延在方向に沿って内挿する内空部２１ａを形成する内周面２２を有する。内空部２１ａの直径（本体部２１の内空の直径）は、電源ケーブル３の直径に合わせて同一となるように形成され、その例は１４．０ｍｍ～２１．５ｍｍである。 The main body portion 21 is a cylindrical member extending in the X-axis direction (one direction) in which the power supply cable 3 extends, and inserted into the lead-in portion 13 of the first connector 10 while the power supply cable 3 is inserted. . Two main body portions 21 are provided in the Y-axis direction orthogonal to the X-axis direction in which the power supply cable 3 extends. In other words, the bush 20 is provided with a pair of main body portions 21, 21. Each of the pair of body portions 21 has an inner circumferential surface 22 forming an inner space 21a into which the power supply cable 3 is inserted along the extension direction. The diameter of the inner space portion 21a (the diameter of the inner space of the main body portion 21) is formed to be the same as the diameter of the power supply cable 3, and an example thereof is 14.0 mm to 21.5 mm.
　環状の第一リブ２３は、本体部２１の内周面２２の周方向に沿って形成され、内周面２２から内側に向かって突出する。第一リブ２３は、可撓性を有する。第一リブ２３は、本体部２１の延在方向に五個（複数）配列されている。なお、第一リブ２３の配列数は、四個以下であってもよいし、六個以上であってもよい。また、第一リブ２３の幅（Ｘ軸方向の長さ）は、例えば、０．５ｍｍ～６．０ｍｍであり、その内周面２２からの突出量は、例えば、０．５ｍｍ～３．５ｍｍである。 The annular first rib 23 is formed along the circumferential direction of the inner peripheral surface 22 of the main body portion 21 and protrudes inward from the inner peripheral surface 22. The first rib 23 is flexible. Five first ribs 23 are arranged in the extending direction of the main body 21. The number of arrangement of the first ribs 23 may be four or less, or six or more. Further, the width (length in the X-axis direction) of the first rib 23 is, for example, 0.5 mm to 6.0 mm, and the amount of protrusion from the inner circumferential surface 22 is, for example, 0.5 mm to 3.5 mm It is.
　環状の第二リブ２６は、本体部２１の外周面２５の周方向に沿って形成され、外周面２５から外側に向かって突出する。第二リブ２６は、可撓性を有する。第二リブ２６は、本体部２１の延在方向に三個（複数）配列されている。なお、第二リブ２６の配列数は、二個以下であってもよいし、四個以上であってもよい。また、第二リブ２６の幅（Ｘ軸方向の長さ）は、例えば、０．５ｍｍ～４．０ｍｍであり、その外周面２５からの突出量は、例えば、０．５ｍｍ～２．５ｍｍである。 The annular second rib 26 is formed along the circumferential direction of the outer peripheral surface 25 of the main body 21 and protrudes outward from the outer peripheral surface 25. The second rib 26 is flexible. Three second ribs 26 are arranged in the extending direction of the main body 21. The number of arrangement of the second ribs 26 may be two or less, or four or more. Further, the width (length in the X-axis direction) of the second rib 26 is, for example, 0.5 mm to 4.0 mm, and the amount of protrusion from the outer peripheral surface 25 is, for example, 0.5 mm to 2.5 mm. is there.
　蓋部２８は、一組の本体部２１，２１が形成される平板状の部材である。蓋部２８の厚み（Ｘ方向のサイズ）の例は、０．５ｍｍ～１５ｍｍである。蓋部２８は、図４（Ａ）に示されるように、蓋部２８に直交する方向（Ｘ軸方向）から見たときに、本体部２１，２１と平面的に重ならない鍔部を有している。 The lid portion 28 is a flat plate-like member in which a pair of main body portions 21 and 21 is formed. An example of the thickness (size in the X direction) of the lid portion 28 is 0.5 mm to 15 mm. As shown in FIG. 4A, the lid portion 28 has a ridge portion which does not overlap in plan with the main body portions 21 and 21 when viewed from the direction (X-axis direction) orthogonal to the lid portion 28. ing.
　ブッシュ２０を第一コネクタ１０の取り付ける場合には、ブッシュ２０の二つの本体部２１，２１を、第一コネクタ１０における引込部１３の内空部１３ａに挿入する。そして、ブッシュ２０の鍔部のうち、本体部２１側の第一の面２８ｃが、第一コネクタ１０の端部１０ｂ（図１参照）に接触するまで押し込むことにより、第一コネクタ１０へのブッシュ２０の取り付けが完了する。 When the bush 20 is attached to the first connector 10, the two main body portions 21, 21 of the bush 20 are inserted into the inner space 13 a of the lead-in portion 13 of the first connector 10. Then, by pushing the first surface 28c on the main body 21 side of the flange portion of the bush 20 into contact with the end 10b (see FIG. 1) of the first connector 10, the bush to the first connector 10 is 20 installation is complete.
　ブッシュ２０が取り付けられた第一コネクタ１０を鉛蓄電池１に取り付ける場合には、蓋部２８における第一の面２８ｃとは反対側の第二の面２８ａ側から電源ケーブル３を挿入し、電源ケーブル３先端の接触端子４が保護部１２に到達するまで挿入を続ける。そして、保護部１２にまで到達した接触端子４をバネ片（図示せず）によって保護部１２に支持させる。これにより、ブッシュ２０が取り付けられた第一コネクタ１０を装備する鉛蓄電池１が完成する。 When the first connector 10 to which the bush 20 is attached is attached to the lead storage battery 1, the power supply cable 3 is inserted from the second surface 28a side opposite to the first surface 28c of the lid 28 The insertion is continued until the contact terminal 4 at the third end reaches the protective portion 12. Then, the contact terminal 4 reaching the protective portion 12 is supported by the protective portion 12 by a spring piece (not shown). Thereby, the lead storage battery 1 equipped with the first connector 10 to which the bush 20 is attached is completed.
　なお、第一コネクタ１０に挿抜可能に形成された第二コネクタ５０も、第一コネクタ１０と同様の構成を有してもよい。第二コネクタ５０には、第一コネクタ１０に取り付けられるブッシュ２０と同様の構成を有するブッシュ２０Ａが取り付けられてもよい。図１に示されるように、第二コネクタ５０は、電源ケーブル７の一方の端部に配置される接触端子８を覆う保護部５２と、保護部５２に電源ケーブル７を引き込む引込部５３と、を有する筐体５１を備える。保護部５２は、接触端子８及び電源ケーブル７の一部を収容する収容部５２ａを有する。保護部５２には、接触端子８を支持するバネ片（図示せず）が設けられている。保護部５２は、第一コネクタ１０の保護部１２と嵌合可能に形成されている。 The second connector 50 formed to be insertable into and removable from the first connector 10 may also have the same configuration as the first connector 10. To the second connector 50, a bush 20A having the same configuration as the bush 20 attached to the first connector 10 may be attached. As shown in FIG. 1, the second connector 50 includes a protective portion 52 covering the contact terminal 8 disposed at one end of the power cable 7, and a lead-in portion 53 for pulling the power cable 7 into the protective portion 52. And a housing 51 having the The protection unit 52 includes a housing 52 a for housing the contact terminal 8 and a part of the power cable 7. The protective portion 52 is provided with a spring piece (not shown) for supporting the contact terminal 8. The protective portion 52 is formed to be engageable with the protective portion 12 of the first connector 10.
　引込部５３は、電源ケーブル７の延在方向に沿って電源ケーブル７を内挿する内空部５３ａを有する。本実施形態では、電源ケーブル７は、ブッシュ２０Ａを介して引込部５３に内挿される。引込部５３は、電源ケーブル７の延在方向に交差する方向に二つ配列されている。言い換えれば、第二コネクタ５０には、一組の引込部５３が形成されている。引込部５３には、ブッシュ２０Ａが取り付けられる。 The lead-in portion 53 has an inner space portion 53 a into which the power supply cable 7 is inserted along the extending direction of the power supply cable 7. In the present embodiment, the power supply cable 7 is inserted into the lead-in portion 53 via the bush 20A. The two lead-in portions 53 are arranged in the direction intersecting the extending direction of the power supply cable 7. In other words, the second connector 50 is formed with a set of lead-in portions 53. The bush 20A is attached to the lead-in portion 53.
　なお、第二コネクタ５０のサイズは、第一コネクタ１０とほぼ同様であるので、ここでは説明を省略する。また、第二コネクタ５０を形成する材料の例も、第一コネクタ１０と同様であるので、ここでの詳細な説明は省略する。第二コネクタ５０に取り付けられるブッシュ２０Ａも、図２、図３（Ａ）、図３（Ｂ）、図４（Ａ）、及び図４（Ｂ）に示されるように、本体部２１と、蓋部２８と、が設けられている。一の本体部２１は、環状の第一リブ（第一突出部）２３と、環状の第二リブ（第二突出部）と、を有する構成と同じであり、第二コネクタ５０のサイズに合わせてリサイズされている。また、ブッシュ２０Ａを形成する材料の例も、ブッシュ２０と同様であるので、ここでの詳細な説明は省略する。 In addition, since the size of the second connector 50 is substantially the same as that of the first connector 10, the description thereof is omitted here. Moreover, since the example of the material which forms the 2nd connector 50 is the same as that of the 1st connector 10, detailed description here is abbreviate | omitted. As shown in FIG. 2, FIG. 3 (A), FIG. 3 (B), FIG. 4 (A) and FIG. 4 (B), the bush 20A attached to the second connector 50 also includes the main body 21 and the lid. A section 28 is provided. The first main body portion 21 is the same as the configuration having the annular first rib (first projecting portion) 23 and the annular second rib (second projecting portion), and is adapted to the size of the second connector 50. It has been resized. Moreover, since the example of the material which forms the bush 20A is the same as that of the bush 20, detailed description here is abbreviate | omitted.
　次に、一実施形態に係るブッシュ２０が取り付けられた一実施形態の第一コネクタ１０の作用効果について説明する。図１に示されるように、上記実施形態のブッシュ２０の本体部２１は、第一コネクタ１０において電源ケーブル３の一方の端部に配置される接触端子４を覆う保護部１２に電源ケーブル３を引き込む引込部１３に内挿可能に形成され、図３（Ａ）に示されるように、第一リブ２３は、本体部２１に内挿される電源ケーブル３の外周面３ａに接触可能に形成されている。このため、電源ケーブル３の外周面３ａは、本体部２１の内周面２２に形成された第一リブ２３に接触配置される。これにより、電源ケーブル３が曲げられたとしても、本体部２１の内周面２２から突出する第一リブ２３と電源ケーブル３の外周面３ａとの接触を維持できる。この結果、電源ケーブル３の引込部１３における防水性を高めることができる。 Next, the effect of the 1st connector 10 of one embodiment with which bush 20 concerning one embodiment was attached is explained. As shown in FIG. 1, the main body portion 21 of the bush 20 of the above embodiment has the power cable 3 connected to the protective portion 12 covering the contact terminal 4 disposed at one end of the power cable 3 in the first connector 10. The first rib 23 is formed so as to be insertable into the lead-in portion 13, and as shown in FIG. 3A, the first rib 23 is formed so as to be in contact with the outer peripheral surface 3a of the power cable 3 inserted into the main body portion 21 There is. Therefore, the outer peripheral surface 3 a of the power supply cable 3 is disposed in contact with the first rib 23 formed on the inner peripheral surface 22 of the main body 21. Thereby, even if the power supply cable 3 is bent, the contact between the first rib 23 projecting from the inner peripheral surface 22 of the main body 21 and the outer peripheral surface 3 a of the power supply cable 3 can be maintained. As a result, the waterproofness in the lead-in portion 13 of the power supply cable 3 can be enhanced.
　また、一実施形態のブッシュ２０が取り付けられた一実施形態の第一コネクタ１０では、電源ケーブル３が曲げられたとしても、本体部２１の内周面２２から突出する第一リブ２３と電源ケーブル３の外周面３ａとの接触を維持できることで、防水性に加え、防塵性及び安全性にも優れる。 Moreover, in the first connector 10 of one embodiment to which the bush 20 of one embodiment is attached, even if the power cable 3 is bent, the first rib 23 and the power cable which protrude from the inner peripheral surface 22 of the main body 21 By being able to maintain the contact with the outer peripheral surface 3a of 3, it is excellent in not only waterproofness but also dust resistance and safety.
　上記実施形態のブッシュ２０では、電源ケーブル３の挿入時における第一リブ２３の電源ケーブル３の外周面３ａへの追随性がよくなる。これにより、本体部２１への電源ケーブル３の挿入性を高めつつ、防水性を高めることができる。 In the bush 20 of the above embodiment, the followability of the first rib 23 to the outer peripheral surface 3 a of the power cable 3 when the power cable 3 is inserted is improved. Thereby, waterproofness can be improved, improving the insertability of the power supply cable 3 to the main-body part 21. As shown in FIG.
　上記実施形態のブッシュ２０では、第一リブ２３は、本体部２１の延在方向（Ｘ軸方向）に五個配列されているので、第一リブ２３が一個配置される場合に比べて、防水性を高めることができる。 In the bush 20 of the above embodiment, five first ribs 23 are arranged in the extending direction (X-axis direction) of the main body portion 21. Therefore, compared with the case where one first rib 23 is arranged, the first ribs 23 are more waterproof. Can be enhanced.
　上記実施形態のブッシュ２０は、本体部２１の外周面２５の周方向に沿って形成され、外周面２５から外側に向かって突出する環状の第二リブ２６を更に備える。これにより、本体部２１の外周面２５と引込部１３の内周面１３ｂとを密に接触させることができる。この結果、引込部１３にブッシュ２０を挿入した場合の引込部１３とブッシュ２０との間の防水性を高めることができる。 The bush 20 of the above embodiment is formed along the circumferential direction of the outer peripheral surface 25 of the main body portion 21, and further includes an annular second rib 26 projecting outward from the outer peripheral surface 25. Thereby, the outer peripheral surface 25 of the main body 21 and the inner peripheral surface 13 b of the lead-in portion 13 can be in close contact with each other. As a result, waterproofness between the lead-in portion 13 and the bush 20 when the bush 20 is inserted into the lead-in portion 13 can be enhanced.
　上記実施形態のブッシュ２０では、第二リブ２６は、本体部２１の延在方向（Ｘ軸方向）に三個配列されているので、第二リブ２６が一個配置される場合に比べて、防水性を高めることができる。 In the bush 20 of the above embodiment, three second ribs 26 are arranged in the extending direction of the main body portion 21 (X-axis direction), so it is more waterproof than in the case where one second rib 26 is arranged. Can be enhanced.
＜実施例＞
　次に、本実施形態のブッシュ２０を取り付けた第一コネクタ１０が、防水性、防塵性、及び安全性に優れる点について、図５を用いて説明する。特に、上記実施形態のブッシュ２０について、下記に示される属性で構成することにより、「ＪＩＳ　Ｃ０９２０：２００３　電気機械器具の外郭による保護等級（ＩＰ２３）」を満たすことができる点について、下記に示す要領で試験を実施した。なお、当該実施例で示す属性について、本実施形態を限定するものではない。 <Example>
Next, the point which the 1st connector 10 which attached the bush 20 of this embodiment is excellent in waterproofness, dust resistance, and safety is demonstrated using FIG. In particular, by configuring the bush 20 according to the above-described embodiment with the attributes shown below, the following points can be satisfied with respect to the point that the "JIS C 0920: 2003 Protection grade by outer shell of electric machine instrument (IP23)" can be satisfied. Conducted the test. Note that this embodiment is not limited to the attributes shown in the example.
（１）電源ケーブル
　種類：富士電線株式会社製　ＷＮＣＴ　５０ＳＱ、直径：１５．７ｍｍ
（２）ブッシュ
　材質：エチレンプロピレンゴム（ＥＰＤＭ）（硬度５０）
　電源ケーブルが内挿される本体部の内径：１８．０ｍｍ、本体部の外径：２９．２ｍｍ、本体部に形成される第一リブの高さ：１．０ｍｍ、第一リブの幅２．０ｍｍ、第一リブの設置間隔：４ｍｍ (1) Power cable type: WNCT 50SQ manufactured by Fuji Electric Wire Co., Ltd., diameter: 15.7 mm
(2) Bushing Material: Ethylene propylene rubber (EPDM) (Hardness 50)
Inner diameter of the main body into which the power cable is inserted: 18.0 mm, outer diameter of the main body: 29.2 mm, height of the first rib formed on the main body: 1.0 mm, width of the first rib 2.0 mm , Installation interval of the first rib: 4 mm
　まずは、上記実施形態と同様のブッシュ２０を取り付けた第一コネクタ１０（以下、供試品と称する。）を準備して、図５に示されるように取付治具１００に設置した。具体的には、供試品のブッシュ２０が上端となるように筐体１１を垂直にした状態に固定する第一条件と、垂直面に対して１０度傾けた状態にて固定する第二条件と、にしたがって、供試品を取付治具１００に設置した。このとき、ブッシュ２０から延びる電源ケーブル３の曲線半径が７０ｍｍ（Ｒ１＝７０ｍｍ、Ｄ１＝７０ｍｍ、Ｈ１＝７０ｍｍ）となるように曲げて設置した。なお、試験中、接触端子４側の開口部は封止手段によって封止した。 First, the first connector 10 (hereinafter, referred to as a test product) to which the same bush 20 as that of the above embodiment was attached was prepared and installed on the attachment jig 100 as shown in FIG. Specifically, a first condition for fixing the case 11 vertically so that the bush 20 of the sample is at the upper end, and a second condition for fixing the case 11 at an angle of 10 degrees with respect to the vertical surface The sample was placed on the mounting jig 100 in accordance with. At this time, the power supply cable 3 extending from the bush 20 was bent so as to have a curved radius of 70 mm (R1 = 70 mm, D1 = 70 mm, H1 = 70 mm). During the test, the opening on the side of the contact terminal 4 was sealed by the sealing means.
　上記第一条件及び第二条件で設置された供試品に対し、「ＪＩＳ　Ｃ０９２０：２００３　電気機械器具の外郭による保護等級（ＩＰ２３）」に準じて試験を実施した。具体的には、下記に示す三種の保護試験を実施した。三種の保護試験の内容と概要は下記のとおりである。 Tests were conducted on the test products installed under the above first and second conditions in accordance with “JIS C0920: 2003 Protection class by outer shell of electric machine appliance (IP23)”. Specifically, three types of protection tests shown below were conducted. The contents and summary of the three types of protection tests are as follows.
　試験１：外郭内の危険な箇所へ接近することに対する人体の保護
　指での危険な箇所への接近に対して保護しているか否かの試験であり、直径１２ｍｍ、長さ８０ｍｍの関節付きテストフィンガ（接近度検査用プローブ）の先端と危険な箇所との間に適正な空間距離を確保しているか否かの試験である。本実施例では、供試品のブッシュ２０における引込部１３と電源ケーブル３との隙間（開口部）に接近度検査用プローブを押圧力１０Ｎ±１Ｎで挿入した。 Test 1: Protection of the human body against approaching dangerous places in the shell It is a test of protection against approaching to dangerous places with fingers, and it is a jointed test with a diameter of 12 mm and a length of 80 mm. It is a test of whether or not the appropriate spatial distance is secured between the tip of the finger (proximity inspection probe) and the dangerous place. In the present embodiment, the proximity inspection probe is inserted with a pressing force of 10 N ± 1 N into the gap (opening) between the lead-in portion 13 and the power cable 3 in the bush 20 of the test product.
　試験２：外部からの固形物の侵入に対する外郭内の電気機器の保護
　直径１２．５ｍｍ以上の大きさの外来固形物に対して保護しているか否かの試験であり、直径１２．５ｍｍの球状の固形物プローブの全体が侵入するか否かの試験である。本実施例では、供試品のブッシュ２０における引込部１３と電源ケーブル３との隙間（開口部）に、直径１２．５ｍｍ～１２．７ｍｍの鋼球である固形物プローブを押圧力３０Ｎ±３Ｎで挿入した。 Test 2: Protection of electrical equipment in outer shell against intrusion of solid from outside This test is to test for protection against foreign solid with a diameter of 12.5 mm or more, and spherical with a diameter of 12.5 mm. It is a test of whether or not the whole solid substance probe penetrates. In this embodiment, a solid substance probe, which is a steel ball with a diameter of 12.5 mm to 12.7 mm, is applied to a gap (opening) between the lead-in portion 13 and the power cable 3 in the bush 20 of the test product. Inserted in
　試験３：水の浸入による有害な影響に対する外郭内の電気機器の保護
　散水に対して保護されているか否かの試験であり、鉛直から両側に６０度までの角度で噴霧した水によっても有害な影響を及ぼされるか否かの試験である。本実施例では、散水ノズル（ＪＩＳ　Ｃ０９２０：２００３　付図５　ＩＰＸ３）を用いて試験を行った。具体的には、平衡おもりのついた遮蔽板を使用し、散水率を毎分１０Ｌ±０．５Ｌとし、散水角度を鉛直方向に対して±６０度とし、流入側の水圧を散水率で設定（５０ｋＰａ～１５０ｋＰａ）し、ノズルから供試品の外郭表面までの距離を３００ｍｍ～５００ｍｍとし、試験時間を１分／ｍ２（最低５分）とした。 Test 3: Protection of electrical equipment in the shell against the harmful effects of water infiltration It is a test of protection against water spray and it is also harmful by water sprayed at an angle of up to 60 degrees from the vertical. It is a test of whether it is affected or not. In this example, the test was performed using a water spray nozzle (JIS C0920: 2003 attached FIG. 5 IPX3). Specifically, a shield plate with a balance weight is used, the water sprinkling rate is 10 L ± 0.5 L, the water sprinkling angle is ± 60 degrees with respect to the vertical direction, and the water pressure on the inflow side is set by the water sprinkling rate The distance from the nozzle to the outer surface of the sample was 300 mm to 500 mm, and the test time was 1 minute / m 2 (minimum 5 minutes).
　上述の試験を行った結果、試験１については、供試品内部への近接プローブの侵入はなかった。試験２については、供試品内部への固形物検査用プローブの侵入はなかった。試験３については、上記第一条件及び第二条件の両方において、供試品内部への水への侵入はなかった。これにより、本実施例のブッシュ２０を取り付けた第一コネクタ１０が、防水性、防塵性、及び安全性に優れることが分かった。 As a result of conducting the above-mentioned test, in Test 1, there was no penetration of the proximity probe into the inside of the sample. In Test 2, there was no penetration of the solid inspection probe into the inside of the sample. In Test 3, there was no penetration of water into the inside of the sample under both the first and second conditions. Thereby, it turned out that the 1st connector 10 which attached bush 20 of this example is excellent in waterproofness, dust resistance, and safety.
　以上、一実施形態について説明したが、本発明の一側面は、上記実施形態に限られない。発明の趣旨を逸脱しない範囲で種々の変更が可能である。 As mentioned above, although one embodiment was described, one side of the present invention is not limited to the above-mentioned embodiment. Various modifications are possible without departing from the scope of the invention.
　上記実施形態では、第一リブ２３は、本体部２１の延在方向に複数配列され、本体部２１の内周面２２の延在方向（Ｘ軸方向）全体に等間隔で形成されている例を挙げて説明したが、例えば、本体部２１の延在方向における中心位置よりも接触端子４側にのみ複数配置されてもよいし（図６参照）、一つ配置されていてもよい。言い換えれば、本体部２１の延在方向における中心位置よりも鉛蓄電池１側には、第一リブ２３を形成しなくてもよい。このような第一コネクタ１０において本体部２１に引き込まれる電源ケーブル３では、本体部２１の延在方向（Ｘ軸方向）における中心位置よりも接触端子４側の曲げ量は、電源ケーブル３の他方の端部側（鉛蓄電池１側）の曲げ量に比べて小さくなる。すなわち、本体部２１の内周面２２と電源ケーブル３の外周面３ａとの隙間量が小さい。このため、変形例に係るブッシュ２０Ｂでは、第一リブ２３と電源ケーブル３の外周面３ａとの接触をより確実に維持することができる。 In the above embodiment, a plurality of first ribs 23 are arrayed in the extending direction of the main body portion 21 and formed at equal intervals in the entire extending direction (X-axis direction) of the inner peripheral surface 22 of the main body portion 21 However, for example, a plurality may be disposed only on the side of the contact terminal 4 than the central position in the extending direction of the main body 21 (see FIG. 6), or one may be disposed. In other words, the first rib 23 may not be formed on the side of the lead storage battery 1 with respect to the center position in the extending direction of the main body 21. In the power cable 3 drawn into the main body 21 in such a first connector 10, the bending amount on the contact terminal 4 side with respect to the central position in the extension direction (X-axis direction) of the main body 21 is the other It becomes smaller than the amount of bending of the end side (lead storage battery 1 side) of That is, the amount of clearance between the inner peripheral surface 22 of the main body 21 and the outer peripheral surface 3 a of the power supply cable 3 is small. For this reason, in the bush 20B which concerns on a modification, contact with the 1st rib 23 and the outer peripheral surface 3a of the power supply cable 3 can be maintained more reliably.
　上記実施形態又は変形例では、第一リブ２３は、可撓性を有する例を挙げて説明したが、可撓性を有さなくてもよい。この場合であっても、本体部２１の内周面２２に第一リブ２３が形成されない場合と比べて、防水性を高めることができる。 In the above embodiment or modification, the first rib 23 has been described by way of an example having flexibility, but may not have flexibility. Even in this case, the waterproofness can be enhanced as compared with the case where the first rib 23 is not formed on the inner peripheral surface 22 of the main body portion 21.
　上記実施形態又は変形例では、本体部２１の外周面２５の形状がＸ軸方向から見て円形（断面円形）である例を挙げて説明したが、矩形であってもよいし、楕円であってもよいし、曲線と直線とからなる形状であってもよい。また、蓋部２８の形状について、上記実施形態又は変形例の例に限られず、Ｘ軸方向から見て円形であってもよいし、楕円形であってもよいし、直線と曲線とからなる形状であってもよい。 Although the said embodiment or modification gave and demonstrated the example which the shape of the outer peripheral surface 25 of the main-body part 21 is circular (cross-sectional circular) seeing from an X-axis direction, it may be a rectangle or it is an ellipse The shape may be a curve or a straight line. Further, the shape of the lid portion 28 is not limited to the above embodiment or the example of the modification, and may be circular as viewed from the X-axis direction, or may be elliptical, and is formed of straight lines and curves. It may be shaped.
　上記実施形態又は変形例では、蓋部２８に一組の本体部２１，２１が形成されている例を挙げて説明したが、一つの蓋部に対して一つ又は三つ以上の本体部を有していてもよい。 Although the said embodiment or modification gave and demonstrated the example in which one set of main- body parts 21 and 21 is formed in the cover part 28, one or three or more main-body parts are demonstrated with respect to one cover part. You may have.
　上記実施形態又は変形例では、本体部２１の外周面２５に第二リブ２６が形成された例を挙げて説明したが、外周面２５の第二リブ２６は形成されなくてもよい。また、ブッシュ２０における本体部２１の外周面２５と引込部１３の内周面１３ｂとは接着剤によって接着されてもよいし、シート状部材が配置されてもよい。 Although the said embodiment or modification gave and demonstrated the example in which the 2nd rib 26 was formed in the outer peripheral surface 25 of the main-body part 21, the 2nd rib 26 of the outer peripheral surface 25 does not need to be formed. Further, the outer peripheral surface 25 of the main body portion 21 and the inner peripheral surface 13 b of the lead-in portion 13 in the bush 20 may be adhered by an adhesive, or a sheet-like member may be disposed.
　１…鉛蓄電池、３…電源ケーブル、３ａ…外周面、４…接触端子、６…電源コントローラ、７…電源ケーブル、８…接触端子、１０…第一コネクタ（コネクタ）、１１…筐体、１２…保護部、１３…引込部、１３ａ…内空部、１３ｂ…内周面、２０，２０Ａ，２０Ｂ…ブッシュ、２１…本体部、２１ａ…内空部、２２…内周面、２３…第一リブ（第一突出部）、２５…外周面、２６…第二リブ（第二突出部）、２８…蓋部、５０…第二コネクタ（コネクタ）、５１…筐体、５２…保護部、５３…引込部。 DESCRIPTION OF SYMBOLS 1 ... Lead storage battery, 3 ... Power supply cable, 3a ... Outer peripheral surface, 4 ... Contact terminal, 6 ... Power supply controller, 7 ... Power supply cable, 8 ... Contact terminal, 10 ... 1st connector (connector), 11 ... Housing | casing 12 ... protection part, 13 ... lead-in part, 13a ... internal space, 13b ... internal peripheral surface, 20, 20A, 20B ... bush, 21 ... main body, 21a ... internal internal space, 22 ... internal peripheral surface, 23 ... first Rib (first projecting portion), 25: outer peripheral surface, 26: second rib (second projecting portion), 28: lid portion, 50: second connector (connector), 51: housing, 52: protective portion, 53 ... lead-in.

Claims (7)

  1. 　電源ケーブルの一方の端部に配置される接触端子を覆う保護部と、前記保護部に前記電源ケーブルを引き込む引込部と、を有するコネクタに用いられる、ブッシュであって、
    　一方向に延在し、前記電源ケーブルが内挿されると共に前記引込部に内挿される筒状の本体部と、
    　前記本体部における内周面の周方向に沿って形成され、前記内周面から内側に向かって突出する環状の第一突出部と、を備える、ブッシュ。     A bush used for a connector having a protection portion covering contact terminals disposed at one end of a power supply cable, and a lead-in portion for pulling the power supply cable into the protection portion,
    A cylindrical main body which extends in one direction and into which the power cable is inserted and which is inserted into the lead-in portion;
    A bush formed in the circumferential direction of the inner circumferential surface of the main body portion, and including an annular first protrusion projecting inward from the inner circumferential surface;
  2. 　前記第一突出部は、可撓性を有している、請求項１記載のブッシュ。 The bush according to claim 1, wherein the first protrusion is flexible.
  3. 　前記第一突出部は、前記本体部の延在方向における中心位置よりも前記接触端子側に配置されている、請求項１又は２記載のブッシュ。 The bush according to claim 1 or 2, wherein the first projection is disposed closer to the contact terminal than a central position in the extending direction of the main body.
  4. 　前記第一突出部は、前記本体部の延在方向に複数配列されている、請求項１～３の何れか一項記載のブッシュ。 The bush according to any one of claims 1 to 3, wherein a plurality of the first protrusions are arranged in the extending direction of the main body.
  5. 　前記本体部における外周面の周方向に沿って形成され、前記外周面から外側に向かって突出する環状の第二突出部を更に備える、請求項１～４の何れか一項記載のブッシュ。 The bush according to any one of claims 1 to 4, further comprising: an annular second protrusion which is formed along the circumferential direction of the outer peripheral surface of the main body and protrudes outward from the outer peripheral surface.
  6. 　電源ケーブルの一方の端部に配置される接触端子を覆う保護部と、前記保護部に前記電源ケーブルを引き込む引込部と、を有するコネクタと、
    　請求項１～５の何れか一項記載のブッシュと、を備え、
    　前記本体部は、前記引込部に内挿されている、コネクタ。     A protective portion covering a contact terminal disposed at one end of the power supply cable, and a connector having a lead-in portion for drawing the power supply cable into the protective portion.
    A bush according to any one of claims 1 to 5;
    The connector, wherein the body portion is inserted into the lead-in portion.
  7. 　少なくとも一つの鉛蓄電池と、
    　前記鉛蓄電池と電気的に接続される電源ケーブルと、
    　請求項６記載のコネクタと、を備え、
    　前記電源ケーブルは、前記コネクタの前記引込部に内挿されている、鉛蓄電池。     At least one lead storage battery,
    A power cable electrically connected to the lead storage battery;
    A connector according to claim 6;
    The lead acid battery, wherein the power cable is inserted into the lead-in portion of the connector.
PCT/JP2017/039963 2017-11-06 2017-11-06 Bush, connector, and lead storage battery WO2019087396A1 (en)

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PCT/JP2017/039963 WO2019087396A1 (en) 2017-11-06 2017-11-06 Bush, connector, and lead storage battery
PCT/JP2018/016483 WO2019087434A1 (en) 2017-11-06 2018-04-23 Bush, connector, lead storage battery, and electric vehicle
JP2018553502A JP6536754B1 (en) 2017-11-06 2018-04-23 Bush, connector, lead storage battery and electric vehicle
CN201880070369.6A CN111295806B (en) 2017-11-06 2018-04-23 Bush, connector, lead storage battery and electric vehicle

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