CN111295806A - Bush, connector, lead storage battery and electric vehicle - Google Patents
Bush, connector, lead storage battery and electric vehicle Download PDFInfo
- Publication number
- CN111295806A CN111295806A CN201880070369.6A CN201880070369A CN111295806A CN 111295806 A CN111295806 A CN 111295806A CN 201880070369 A CN201880070369 A CN 201880070369A CN 111295806 A CN111295806 A CN 111295806A
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- China
- Prior art keywords
- connector
- power cable
- main body
- lead
- bushing
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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
Abstract
A bush (20) is used for a connector having: a protection unit (12) that covers the contact terminal (4) disposed at one end of the power cable (3); and a lead-in part (13) for leading the power supply cable into the protection part. The bush includes: a cylindrical main body part (21) extending in one direction, having an internal hollow part (21a) into which a power supply cable is inserted, and inserted into the lead-in part; an annular first rib (23) which is formed along the circumferential direction of an inner circumferential surface (22) forming the hollow portion and protrudes inward from the inner circumferential surface; and a lid (27) having: an internal space (27a) which is disposed on one end side of the main body in one direction and communicates with the internal space (21 a); and a flange portion (27b) which protrudes outward from the outer shape of the main body portion in a plan view seen from the one direction, wherein the flange portion is formed so as to contact with the front end (10b) of the introduction portion in a state facing the one direction when the main body portion is inserted into the introduction portion.
Description
Technical Field
One aspect of the present invention relates to a bushing used for a connector for connecting power cables to each other, a connector provided with the bushing, a lead-acid battery, and an electric vehicle.
Background
In an electric vehicle driven by electric power charged by a plurality of storage batteries, the plurality of storage batteries and a power supply controller are electrically connected by a power supply cable. A connector is provided in the middle of the power cable, and the power cable extending from the plurality of batteries and the power cable extending from the power controller are connected by the connector. The connector includes: a battery side connector in which contact terminals at the distal ends of power cables extending from the plurality of batteries are housed in the housing; and a vehicle body side connector, in which contact terminals at the front end of a power cable extending from the power controller are accommodated by the housing, and plugs of the vehicle body side connector are inserted into and removed from each other. The power cable-side contact terminals extending from the plurality of batteries and the power cable-side contact terminals extending from the power controller are electrically connected (connected) to each other by fitting of the connectors (for example, patent document 1). In addition, when the battery and the charger are connected, the battery and the charger may be connected via a connector provided in the charger.
[ Prior art documents ]
[ patent document ]
Patent document 1: japanese patent application laid-open No. 2010-262845.
Disclosure of Invention
[ problems to be solved by the invention ]
In the housing of the battery-side connector and the vehicle-body-side connector, a base end portion on the opposite side to the side where the two connectors are connected to each other is formed with a drawing portion for drawing the power cable into the housing. The power supply cable is inserted into the lead-in portion without a gap. However, since the power cable generally has flexibility, the power cable is bent, and a gap is generated between the inlet portion and the power cable, so that water may enter the housing.
Accordingly, an object of one aspect of the present invention is to provide a bush, a connector, a lead-acid battery, and an electric vehicle that can improve the waterproofness of a lead-in portion of a power cable.
[ means for solving the problems ]
A bushing according to an aspect of the present invention is used for a connector, the connector including: a protection portion that covers the contact terminal disposed at one end of the power cable; and a lead-in portion that leads the power cable into the protection portion, the bushing including: a cylindrical main body portion extending in one direction, having a first insertion hole into which a power supply cable is inserted, and inserted into the lead-in portion; an annular first protruding portion formed along a circumferential direction of an inner circumferential surface on which the first insertion hole is formed, and protruding inward from the inner circumferential surface; and a lid portion having: a second insertion hole which is arranged on one end side of the main body in one direction and communicates with the first insertion hole; and a flange portion that protrudes outward from an outer shape of the main body portion in a plan view seen from the one direction, the flange portion being formed to contact a tip end of the lead-in portion in a state facing the one direction when the main body portion is inserted into the lead-in portion.
The bushing of this configuration has a main body portion formed as a lead-in portion insertable into the connector, the lead-in portion leading the power cable into a protection portion covering the contact terminal disposed at one end portion of the power cable, and the first projecting portion formed to be contactable with an outer peripheral surface of the power cable inserted into the main body portion. According to the bushing of this configuration, the outer peripheral surface of the power cable is disposed in contact with the first protruding portion formed on the inner peripheral surface of the main body portion. Thus, even if the power cable is bent, the first protruding portion protruding from the inner peripheral surface of the main body portion can be maintained in contact with the outer peripheral surface of the power cable. The bushing of this configuration includes a cover portion having a flange portion formed so as to be in contact with a tip end of the inlet portion in a state of facing in one direction when the main body portion is inserted into the inlet portion, and therefore the flange portion covers a gap between the inlet portion and the main body portion. This prevents water from entering the connector along the gap between the inlet portion and the main body portion. By these synergistic effects, the waterproofness of the lead-in portion of the power cable can be improved.
In the bushing according to one aspect of the present invention, the main body may include: a first main body part for inserting a power cable for connecting the positive electrode; and a second main body part into which a power cable for connecting the negative electrode is inserted, the lid part connecting the first main body part and the second main body part. Thus, even when the positive power cable and the negative power cable are inserted into the connector, the waterproof property of the inlet portion of the power cable can be improved.
In the bush according to one aspect of the present invention, the linear portion may be formed in the cover portion in a direction in which the first body portion and the second body portion are aligned when the cover portion is viewed in plan from one direction. This allows the connector to be fitted to the shape of a flat connector for easy attachment to a wall surface.
In the bush according to one aspect of the present invention, the shape of the lid portion in a plan view seen from the one direction may be formed so as to be asymmetrical in a direction orthogonal to both the direction in which the first body portion and the second body portion are arranged and the one direction. Thus, for example, in the case of a bushing having a hole for inserting a cable connected to the positive electrode and a hole for inserting a cable connected to the negative electrode, the insertion of the bushing into the connector in a state where the positive electrode hole and the negative electrode hole are inserted in a wrong manner can be suppressed. As a result, defects such as short circuits can be avoided.
In the bush according to one aspect of the present invention, the shape of the flange portion in a plan view seen from one direction is formed to be once rotational symmetric. Thus, for example, in the case of a bushing having a hole for inserting a cable connected to the positive electrode and a hole for inserting a cable connected to the negative electrode, the connector is not inserted in a state where the positive electrode hole and the negative electrode hole are inserted in a staggered manner. As a result, defects such as short circuits can be avoided.
A bushing according to an aspect of the present invention is used for a connector, the connector including: a protection portion that covers the contact terminal disposed at one end of the power cable; and a lead-in portion that leads the power cable into the protection portion, the bushing including: a cylindrical main body portion extending in one direction, having a first insertion hole into which a power supply cable is inserted, and inserted into the lead-in portion; an annular first protruding portion formed along a circumferential direction of an inner circumferential surface on which the first insertion hole is formed, and protruding inward from the inner circumferential surface; and a lid portion having: a second insertion hole which is arranged on one end side of the main body in one direction and communicates with the first insertion hole; and a flange portion that protrudes outward from an outer shape of the main body portion in a plan view seen from one direction, the main body portion having: a first main body part for inserting a power cable for connecting the positive electrode; and a second main body part into which a power cable connected to the negative electrode is inserted, the lid part connecting the first main body part and the second main body part, the lid part being formed in a shape that is once rotationally symmetrical in a plan view seen from one direction.
The bushing of this configuration has a main body portion formed as a lead-in portion insertable into the connector, the lead-in portion leading the power cable into a protection portion covering the contact terminal disposed at one end portion of the power cable, and the first projecting portion formed to be contactable with an outer peripheral surface of the power cable inserted into the main body portion. According to the bushing of this configuration, the outer peripheral surface of the power cable is disposed in contact with the first protruding portion formed on the inner peripheral surface of the main body portion. Thus, even if the power cable is bent, the first protruding portion protruding from the inner peripheral surface of the main body portion can be maintained in contact with the outer peripheral surface of the power cable. The waterproof property of the lead-in part of the power cable can be improved.
In the bush according to the aspect of the present invention, the outer shape of the cover portion in a plan view seen from the one direction may have a size shape conforming to the outer shape of the introduction portion in a plan view seen from the one direction. Thus, the cover portion can reliably cover the opening portion, and therefore, water can be prevented from entering the interior of the connector along the gap between the inlet portion and the main body portion.
In the bushing according to an aspect of the present invention, the bushing may further include: and a ring-shaped second protruding portion formed along a circumferential direction of the inner circumferential surface on which the second insertion hole is formed, and protruding inward from the inner circumferential surface. In this way, since the annular protruding portion protruding inward from the inner peripheral surface can be provided in both the first insertion hole and the second insertion hole, water can be prevented from entering the connector along the power cable.
In the bush according to one aspect of the present invention, the first projecting portion may have flexibility. The bush has a good ability to follow the outer peripheral surface of the power cable by the first protruding portion when the power cable is inserted. This improves the insertion of the power cable into the main body and improves the waterproof property.
In the bushing according to one aspect of the present invention, the first projecting portion may be disposed closer to the contact terminal than a center position in the extending direction of the main body portion. In the power cable drawn into the main body, the amount of bending of the contact terminal side with respect to the center position in the extending direction of the main body is smaller than the amount of bending of the other end portion side of the power cable. That is, the amount of clearance between the inner peripheral surface of the body and the outer peripheral surface of the power cable is small. Therefore, the contact of the first protruding portion with the outer peripheral surface of the power cable can be maintained more reliably.
In the bush according to one aspect of the present invention, a plurality of first projecting portions may be arranged in the extending direction of the main body portion. This can further improve the water resistance.
An aspect of the present invention relates to a bush, which may further include: and an annular third projecting portion formed along the circumferential direction of the outer peripheral surface of the body portion and projecting outward from the outer peripheral surface. This allows the outer peripheral surface of the body portion to be in close contact with the inner peripheral surface of the inlet portion. As a result, when the bush is inserted into the inlet portion, the waterproofness between the inner circumferential surface of the inlet portion and the outer circumferential surface of the bush can be improved.
One aspect of the present invention relates to a connector, including: a connector having: a protection portion that covers the contact terminal disposed at one end of the power cable; and a lead-in part which leads the power cable into the protection part; and the bushing, the main body part is inserted into the lead-in part.
According to the connector having this configuration, the outer peripheral surface of the power cable is disposed in contact with the first protruding portion formed on the inner peripheral surface of the lead-in portion. Thus, even if the power cable is bent, the first protruding portion protruding from the inner peripheral surface of the main body portion can be maintained in contact with the outer peripheral surface of the power cable. As a result, the waterproof property of the inlet portion of the power cable can be improved.
In the connector according to one aspect of the present invention, an outer peripheral surface of the main body portion and an inner peripheral surface of the lead-in portion in the bush may be bonded by an adhesive. This allows the outer peripheral surface of the main body portion to be fixed to the inner peripheral surface of the inlet portion, thereby more reliably preventing water from entering between the main body portion and the inlet portion.
In the connector according to one aspect of the present invention, a flat surface may be formed on a part of an outer peripheral surface of the protection portion and the introduction portion. This facilitates mounting on a wall surface or the like.
One aspect of the present invention relates to a lead acid battery, which may include: at least one lead storage battery; the power supply cable is electrically connected with the lead storage battery; and the connector, the power cable is inserted in the leading-in part of the connector.
According to the lead-acid battery having this configuration, the outer peripheral surface of the power cable is disposed in contact with the first protruding portion formed on the inner peripheral surface of the lead-in portion. Thus, even if the power cable is bent, the first protruding portion protruding from the inner peripheral surface of the main body portion can be maintained in contact with the outer peripheral surface of the power cable. As a result, the waterproof property of the inlet portion of the power cable can be improved.
An electric vehicle according to an aspect of the present invention may include the above-described lead-acid battery, and the connector may be attached in a state in which the second insertion hole in the flange portion faces upward. In the connector attached in such a state, water is likely to enter from the bush. However, since the first projecting portion and the flange portion are provided in the bush, water hardly enters.
In the electric vehicle according to the aspect of the present invention, the power cable inserted into the second insertion hole may extend upward in the vertical direction and have a curved portion. In the connector mounted in such a state, water easily enters along the power cable. Further, since the power cable is arranged in a bent state, a gap is likely to be generated between the inner peripheral surface of the first insertion hole of the body portion and the outer peripheral surface of the power cable. However, since the first projecting portion and the flange portion are provided in the bush, water hardly enters.
In the electric vehicle according to the aspect of the present invention, the connector may be attached in a state of being exposed to the outside of the vehicle body of the electric vehicle. In the connector mounted in such a state, water easily enters. However, since the first projecting portion and the flange portion are provided in the bush, water hardly enters.
[ Effect of the invention ]
According to an aspect of the present invention, the waterproofness of the lead-in portion of the power cable can be improved.
Drawings
FIG. 1 is a perspective view of a connector with an embodiment of a bushing installed.
Fig. 2 is a perspective view of the bushing.
Fig. 3(a) is a sectional view of the bushing of fig. 2, and fig. 3(B) is a side view of the bushing of fig. 2.
Fig. 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 another direction.
Figure 5 is a side view of a forklift with a connector mounted with one embodiment of a bushing.
Fig. 6 is an explanatory view for explaining an experimental example.
Fig. 7 is a sectional view of a bush according to a first modification.
Fig. 8 is a perspective view of a connector to which a bush according to a second modification is attached.
Fig. 9 is a perspective view of a bush according to a second modification.
Fig. 10(a) is a sectional view of the bushing of fig. 9, and fig. 10(B) is a side view of the bushing of fig. 9.
Detailed Description
Hereinafter, a bushing 20 according to an embodiment, a first connector (connector) 10 to which the bushing 20 is attached according to an embodiment, and a lead acid battery 1 equipped with the first connector 10 according to an embodiment will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. For convenience of explanation, the extending direction of the power cables 3 is set to the X axis, the direction orthogonal to the X axis and in which the power cables 3 are arranged is set to the Y axis, and the direction orthogonal to the X axis and the Y axis and in which the height direction of the first connector 10 and the second connector 50 is set to the Z axis.
The bushing 20 according to one embodiment, the first connector 10 according to one embodiment to which the bushing 20 is attached, and the lead-acid battery 1 according to one embodiment equipped with the first connector 10 are mounted on, for example, an electric vehicle such as a forklift (see fig. 5) driven by electric energy.
As shown in fig. 1, the electric vehicle houses a lead storage battery 1, a power supply controller 6, and the like. The power supply controller 6 controls the supply of electric power from the lead storage battery 1 to an electric motor for driving and the like. The lead storage battery 1 and the power controller 6 are electrically connected by connecting a power cable 3 connected to the lead storage battery 1 and a power cable 7 connected to the power controller 6.
A first connector 10 is provided on a power supply cable 3 extending from the lead storage battery 1, and a contact terminal 4 at the tip of the power supply cable 3 is housed in a housing 11. A second connector 50 is provided on a power cable 7 extending from the power controller 6, and a contact terminal 8 at the tip of the power cable 7 is housed in a housing 51. The first connector 10 and the second connector 50 are provided to be insertable into and removable from each other and to be fittable to each other. By fitting the first connector 10 and the second connector 50 to each other, the contact terminal 4 on the power supply cable 3 side extending from the lead storage battery 1 and the contact terminal 8 on the power supply cable 7 side extending from the power supply controller 6 are electrically conducted (connected) to each other.
The power cable 3 is preferably a cable having excellent conductivity, and an example of the resistance is 200mm and 0.4m Ω or less. Similarly to the power cable 3, the contact terminal 4 provided at the tip of the power cable 3 is preferably a member having excellent conductivity, and an example of the resistance is 200mm and 0.4m Ω or less. Examples of such a cable having excellent conductivity include rubber-based rubber insulated cables such as PNCT, CT, WNCT, WRNCT and the like.
In the first connector 10, an example of a dimension in a width direction (Y-axis direction) orthogonal to an extending direction (X-axis direction) of the power cable 3 is 50mm to 100mm, an example of a dimension in an extending direction (X-axis direction) of the power cable 3 is 50mm to 200mm, and an example of a dimension in a height direction (Z-axis direction) orthogonal to the width direction and the extending direction of the power cable 3 is 20mm to 70 mm.
The first connector 10 is preferably formed of a material having excellent acid resistance, heat resistance, and insulation properties. For example, the first connector 10 preferably has acid resistance not attacked by sulfuric acid having a specific gravity of 1.120 to 1.800(at20 ℃). The first connector 10 preferably has heat resistance that does not melt at 100 ℃. The first connector 10 preferably has an insulating property with a surface resistance of 1000M Ω or more, and more preferably 500M Ω or more. Examples of preferable materials for forming the first connector 10 include resins such as PE (polyethylene), PP (polypropylene), PC (polycarbonate), PBT (polybutylene terephthalate), and the like.
The first connector 10 includes a housing 11, and the housing 11 includes: a protection portion 12 that covers the contact terminal 4 disposed at one end of the power cable 3; and a lead-in portion 13 that leads the power cable 3 into the protection portion 12.
The protection portion 12 has a housing portion 12a that houses the contact terminal 4 and a part of the power cable 3. The protection portion 12 is provided with a spring piece (not shown) for supporting the contact terminal 4. The spring piece is preferably made of a material having excellent conductivity, and an example of the resistance is 200mm and 0.4m Ω or less. Examples of the material forming the spring piece include stainless steel, copper, silver, or an alloy containing them. Further, plating treatment of silver or the like may be performed on the basis of these materials. The protection portion 12 is formed to be capable of fitting with the protection portion 52 of the second connector 50. A flat surface 13e is formed on a part of the outer peripheral surfaces 12d and 13d of the protection portion 12 and the introduction portion 13.
The lead-in portion 13 has an inner peripheral surface 13b, and the inner peripheral surface 13b is formed with an inner hollow portion 13a into which the power cable 3 is inserted in the extending direction of the power cable 3. In the present embodiment, the power cable 3 is inserted into the inlet 13 through the bush 20. Two lead-in portions 13 are arranged in a direction intersecting the extending direction of the power cable 3. In other words, a set of lead-in portions 13 is formed on the first connector 10. A bush 20 as shown in fig. 2 is attached to the introducing portion 13.
The bush 20 is preferably made of a material having excellent heat resistance, insulation, elasticity, and flexibility. For example, the liner 20 preferably has heat resistance that does not melt at 100 ℃ or higher. The bushing 20 preferably has an insulating property with a surface resistance of 1000M Ω or more. Examples of preferred materials for forming the liner 20 include HNBR (hydrogenated nitrile rubber), FKM (fluoro rubber), VMQ (silicone rubber), ACM (acrylic rubber), CO (epichlorohydrin rubber), and the like.
As shown in fig. 2, 3(a), 3(B), 4(a) and 4(B), the hub 20 is provided with a main body portion 21 and a lid portion 27. One main body portion 21 has an annular first rib (first projecting portion) 23 and an annular third rib (third projecting portion).
The main body 21 is a cylindrical member extending in the X-axis direction (one direction) in which the power cable 3 extends, and inserted into the power cable 3 and the lead-in portion 13 of the first connector 10. The main body 21 is provided in two in the Y-axis direction orthogonal to the X-axis direction in which the power cable 3 extends. In other words, the bush 20 is provided with a pair of main body portions (first and second main body portions) 21, 21. A power supply cable 3 connected to the positive electrode is inserted into one of the pair of main bodies 21, and a power supply cable 3 connected to the negative electrode is inserted into the other of the pair of main bodies 21, 21. The pair of body portions 21 each have an inner peripheral surface 22, and the inner peripheral surfaces 22 form an inner hollow portion (first insertion hole) 21a into which the power cable 3 is inserted in the extending direction thereof. The diameter of the hollow portion 21a (the diameter of the hollow portion of the body portion 21) is the same as the diameter of the power cable 3, and examples thereof are 14.0mm to 21.5 mm.
The annular first rib 23 is formed along the circumferential direction of the inner circumferential surface 22 of the body 21, and protrudes inward from the inner circumferential surface 22. The first rib 23 has flexibility. The first ribs 23 are arranged in five (a plurality of) in the extending direction of the body portion 21. The number 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, 0.5mm to 6.0mm, and the amount of protrusion from the inner peripheral surface 22 is, for example, 0.5mm to 3.5 mm.
The annular third rib 26 is formed along the circumferential direction of the outer circumferential surface 25 of the body portion 21, and protrudes outward from the outer circumferential surface 25. The third rib 26 has flexibility. Three (a plurality of) third ribs 26 are arranged in the extending direction of the body portion 21. The number of the third ribs 26 may be two or less, or four or more. The width (length in the X-axis direction) of the third rib 26 is, for example, 0.5mm to 4.0mm, and the amount of protrusion from the outer peripheral surface 25 is, for example, 0.5mm to 2.5 mm.
The lid 27 is a flat plate-like member connecting the pair of body portions 21, 21. The lid 27 is disposed on one end side of the body 21 in the X-axis direction (one direction). The outer shape of the lid portion 27 when viewed in a plan view from the X-axis direction is identical in size and shape to the outer shape of the inlet portion 13 when viewed in a plan view from the X-axis direction. The area of the lid portion 27 when viewed from the X-axis direction in plan view is larger than the area of the opening portion 13c of the introducing portion 13 when viewed from the X-axis direction in plan view. Further, when the lid portion 27 is viewed in plan from the X-axis direction, the lid portion 27 is formed with linear portions 27e, 27e extending in the direction in which the pair of main body portions 21, 21 are arranged.
The lid portion 27 has: an inner peripheral surface 28, the inner peripheral surface 28 forming an inner hollow portion (second insertion hole) 27a for inserting the power cable 3 in the extending direction thereof; a flange portion 27b extending outward from the outer shape of the main body portion 21 when viewed in a plan view in the X-axis direction; and a ring-shaped second rib (second projection) 29. The hollow portion 27a communicates with the hollow portion 21 a. The diameter of the hollow portion 27a (the diameter of the hollow portion of the lid portion 27) is the same as the diameter of the power cable 3, and examples thereof are 14.0mm to 21.5 mm.
As shown in fig. 4 a, the flange portion 27b does not overlap the body portions 21, 21 in plan view when viewed from a direction (X-axis direction) orthogonal to the lid portion 27. An example of the thickness (dimension in the X direction) of the lid portion 27 is 0.5mm to 15 mm. The flange portion 27b is formed to contact the leading end 10b of the introducing portion 13 in a state of facing in the X-axis direction (one direction) when the main body portion 21 is inserted into the introducing portion 13.
The annular second rib 29 is formed along the circumferential direction of the inner circumferential surface 28 of the lid portion 27, and protrudes inward from the inner circumferential surface 28. The second rib 29 has flexibility. One second rib 29 is arranged in the extending direction of the lid portion 27. In addition, two or more second ribs 29 may be arranged. The width (length in the X-axis direction) of the second rib 29 is, for example, 0.5mm to 6.0mm, and the amount of protrusion from the inner peripheral surface 28 is, for example, 0.5mm to 3.5 mm.
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 hollow portion 13a of the drawing portion 13 of the first connector 10. Then, the first surface 27d of the cover portion 27 of the bush 20 on the body portion 21 side is press-fitted into contact with the tip 10b (see fig. 1) of the first connector 10, whereby the fitting of the bush 20 to the first connector 10 is completed.
When the first connector 10 with the bush 20 attached thereto is attached to the lead-acid battery 1, the power cable 3 is inserted from the second surface 27c side of the cover 27 opposite to the first surface 27d, and the insertion is continued until the contact terminal 4 at the tip of the power cable 3 reaches the protection portion 12. The contact terminal 4 reaching the protection portion 12 is supported by the protection portion 12 by a spring piece (not shown). Thereby, the lead secondary battery 1 equipped with the first connector 10 mounted with the bush 20 is completed.
The second connector 50 that is formed on the first connector 10 so as to be pluggable may have the same structure as the first connector 10. A bush 20A having the same structure as the bush 20 mounted on the first connector 10 may be mounted on the second connector 50. As shown in fig. 1, the second connector 50 includes a frame 51, and the frame 51 includes: a protection portion 52 that covers the contact terminal 8 disposed at one end of the power cable 7; and a lead-in portion 53 that leads the power cable 7 into the protection portion 52. The protection portion 52 has a receiving portion 52a that receives the contact terminal 8 and a part of the power cable 7. The protection portion 52 is provided with a spring piece (not shown) for supporting the contact terminal 8. The protection portion 52 is formed to be capable of fitting with the protection portion 12 of the first connector 10.
The lead-in portion 53 has an inner hollow portion 53a into which the power cable 7 is inserted along the extending direction of the power cable 7. In the present embodiment, the power cable 7 is inserted into the inlet 53 through the bush 20A. Two lead-in portions 53 are arranged in a direction intersecting the extending direction of the power cable 7. In other words, a set of lead-in portions 53 is formed on the second connector 50. The bush 20A is attached to the introducing portion 53.
The second connector 50 has substantially the same size as the first connector 10, and therefore, description thereof is omitted. Note that, since an example of a material forming the second connector 50 is also the same as that of the first connector 10, a detailed description thereof is omitted here. As shown in fig. 2, 3(a), 3(B), 4(a) and 4(B), the bush 20A attached to the second connector 50 is also provided with a body portion 21 and a lid portion 27. The one body portion 21 has the same configuration as the one having the annular first rib (first protruding portion) 23 and the annular third rib (third protruding portion), and is adjusted according to the size of the second connector 50. Note that, since an example of a material forming the bush 20A is also the same as the bush 20, a detailed description thereof is omitted here.
As described above, the bush 20 according to the embodiment, the first connector 10 according to the embodiment to which the bush 20 is attached, and the lead acid battery 1 according to the embodiment equipped with the first connector 10 are mounted on the forklift 100 shown in fig. 5, for example. In the forklift 100, an operator can drive the wheels 102 by depressing the accelerator pedal 101 to run the forklift 100, and can raise or lower the forks 105 by extending and contracting the hydraulic cylinders 104 by operating the lift lever 103.
A battery chamber 107 for accommodating the lead storage battery 1 is provided below the seat 106 of the forklift 100. The battery chamber 107 is disposed above a chassis 108 that supports the wheels 102. The power controller 6 and a motor 109 for driving the wheels 102 are housed in the chassis 108. The lead storage battery 1 and the power controller 6 are electrically connected by connecting a power cable 3 connected to the lead storage battery 1 and a power cable 7 connected to the power controller 6.
A first connector 10 is provided on a power supply cable 3 extending from the lead-acid battery 1, and a contact terminal 4 at the tip of the first connector 10 is housed in a housing 11. A second connector 50 is provided on a power supply cable 7 extending from the power supply controller 6, and a contact terminal 8 at the tip of the second connector 50 is housed in a housing 51. The first connector 10 and the second connector 50 are provided to be insertable into and removable from each other and to be fittable to each other. By fitting the first connector 10 and the second connector 50 to each other, the contact terminal 4 on the power supply cable 3 side extending from the lead storage battery 1 and the contact terminal 8 on the power supply cable 7 side extending from the power supply controller 6 are electrically conducted (connected) to each other.
The first connector 10 is attached with the hollow portion 27a of the flange portion 27b directed upward. The lead-acid battery 1 is disposed vertically above the first connector 10, and the power cable 3 has a curved portion. The power cable 3 inserted into the hollow portion 27a of the cover 27 extends upward in the vertical direction and has a curved portion. The first connector 10 is attached in a state of being exposed to the outside of the vehicle body of the forklift 100.
Next, the operational effect of the first connector 10 of the embodiment to which the bush 20 of the embodiment is attached will be described. As shown in fig. 1, the main body 21 of the bush 20 of the above embodiment is formed so as to be insertable into the introducing portion 13, the introducing portion 13 introduces the power cable 3 into the protecting portion 12, and the protecting portion 12 covers the contact terminal 4 arranged at one end of the power cable 3 in the first connector 10, and as shown in fig. 3(a), the first rib 23 is formed so as to be contactable with the outer peripheral surface 3a of the power cable 3 inserted into the main body 21. Therefore, the outer peripheral surface 3a of the power cable 3 is disposed in contact with the first rib 23 formed on the inner peripheral surface 22 of the body portion 21. Thereby, even if the power cable 3 is bent, the first rib 23 protruding from the inner peripheral surface 22 of the body portion 21 can be maintained in contact with the outer peripheral surface 3a of the power cable 3.
As shown in fig. 1 and 2, when the main body portion 21 is inserted into the inlet portion 13, the bush 20 of the above embodiment includes the cover portion 27, and the cover portion 27 has the flange portion 27b formed so as to be in contact with the tip end 10b of the inlet portion 13 in the X-axis direction, so that the flange portion 27b covers the gap between the inlet portion 13 and the main body portion 21. This can prevent water from entering the first connector 10 along the gap between the inlet 13 and the body 21. By these synergistic effects, the waterproofness of the inlet 13 of the power cable 3 can be improved. Further, since the lid 27 is in contact with the tip 10b of the inlet 13 via the flange 27b, it is possible to avoid a problem that the lid 27 enters the inlet 13 due to vibration. That is, the present invention can be applied to a vehicle or the like that generates vibration.
In the bush 20 of the embodiment, the size and shape of the lid portion 27 when viewed in a plan view from the X-axis direction match the size and shape of the inlet portion 13 when viewed in a plan view from the X-axis direction. Thus, the lid portion can reliably cover the opening portion 13c, and therefore, water can be prevented from entering the interior of the first connector 10 along the gap between the inlet portion 13 and the main body portion 21.
In the first connector 10 according to the embodiment to which the bush 20 according to the embodiment is attached, even when the power cable 3 is bent, the first rib 23 protruding from the inner peripheral surface 22 of the body portion 21 can be kept in contact with the outer peripheral surface 3a of the power cable 3, and thus, the first connector is excellent in waterproof property, dust resistance, and safety.
The bush 20 according to one embodiment further includes an annular second rib 29, and the second rib 29 is formed along the circumferential direction of the inner circumferential surface 28 in the hollow portion 27a of the cover portion 27 and protrudes inward from the inner circumferential surface 28. Since the annular ribs (the first rib 23 and the second rib 29) protruding inward from the inner peripheral surfaces 22, 28 can be provided on both the inner peripheral surface 22 of the body portion 21 and the inner peripheral surface 28 of the lid portion 27, water can be prevented from entering the inside of the first connector 10 along the power cable 3.
In the bushing 20 of one embodiment, since the first rib 23 has flexibility, the first rib 23 has better following ability to the outer peripheral surface 3a of the power cable 3 when the power cable 3 is inserted. This can improve the insertion of the power cable 3 into the main body 21 and the waterproof property.
In the bush 20 of one embodiment, the body portion 21 is formed with a cover portion 27, and the cover portion 27 connects the body portion 21 in which the power cable 3 connected to the positive electrode is inserted and the body portion 21 in which the power cable 3 connected to the negative electrode is inserted. Thereby, even when the positive power cable 3 and the negative power cable 3 are inserted into the first connector 10, the waterproof property of the lead-in portion 13 of the power cable 3 can be improved.
In the bush 20 of the embodiment, the cover 27 is formed with linear portions 27e, 27e extending in the direction in which the main bodies 21, 21 are aligned (Y-axis direction) when the cover 27 is viewed in plan from the X-axis direction. This allows the connector to conform to the shape of the first connector 10 having the flat surface 13e formed thereon, for easy attachment to the wall surface 107a (see fig. 5) of the forklift 100.
In the bush 20 of the embodiment, since five first ribs 23 are arranged in the extending direction (X-axis direction) of the main body portion 21, the waterproof property can be improved as compared with the case where one first rib 23 is arranged.
The bush 20 of one embodiment further includes an annular third rib 26, and the third rib 26 is formed along the circumferential direction of the outer peripheral surface 25 of the body portion 21 and protrudes outward from the outer peripheral surface 25. This allows the outer peripheral surface 25 of the body portion 21 to be in close contact with the inner peripheral surface 13b of the inlet portion 13. As a result, waterproofness between the introducing portion 13 and the bush 20 when the bush 20 is inserted into the introducing portion 13 can be improved.
In the bush 20 of the embodiment, since three third ribs 26 are arranged in the extending direction (X-axis direction) of the main body portion 21, the waterproof property can be improved as compared with the case where one third rib 26 is arranged.
In the first connector 10 according to the embodiment, since the flat surface 13e is formed on a part of the outer peripheral surface 13d of the protection portion 12 and the introduction portion 13, attachment to the wall surface 107a of the forklift 100 and the like is facilitated.
As shown in fig. 5, a forklift 100 according to one embodiment includes the lead acid battery 1, and the first connector 10 is attached in a state in which the hollow portion 27a of the flange portion 27b faces upward. In the first connector 10 mounted in this state, water easily enters from the bush 20, but since the first rib 23 and the flange portion 27b are provided in the bush 20, water hardly enters.
In the forklift 100 according to the embodiment, the power cable 3 inserted into the hollow portion 27a extends upward in the vertical direction and has a curved portion. In the first connector 10 mounted in this state, water easily intrudes along the power cable 3. Further, since the power cable 3 is arranged in a bent state, a gap is likely to be generated between the inner peripheral surface 22 of the hollow portion 21a of the body portion 21 and the outer peripheral surface 3a of the power cable 3. However, since the first rib 23 and the flange 27b are provided in the bush 20, water is hard to enter.
In the forklift 100 according to one embodiment, the first connector 10 is attached in a state of being exposed to the outside of the body of the forklift 100. In the first connector 10 mounted in this state, water easily intrudes. However, since the first rib 23 and the flange 27b are provided in the bush 20, water is hard to enter.
< example >
Next, the excellent points of the waterproof property, the dustproof property, and the safety of the first connector 10 to which the bush 20 of the present embodiment is attached will be described with reference to fig. 5. In particular, the bush 20 of the above embodiment can satisfy "JIS C0920: 2003 peripheral protection class (IP23) "of electric machine tools, the test was carried out in the following manner. The attributes shown in this example are not intended to limit the present embodiment.
(1) Power cable
The types are as follows: WNCT 50SQ manufactured by fuji wire corporation, diameter: 15.7mm
(2) Bushing
The material is as follows: ethylene propylene rubber (EPDM) (hardness 50)
Inner diameter of main body of power cable insertion: 18.0mm, outer diameter of main body part: 29.2mm, height of first rib formed on main body portion: 1.0mm, width of first rib: 2.0mm, the arrangement interval of the first ribs: 4mm
First, the first connector 10 (hereinafter, referred to as a sample) to which the bush 20 similar to the above-described embodiment is attached is prepared, and as shown in fig. 5, is set on the mounting jig 180. Specifically, the sample is set in the mounting jig 180 under a first condition in which the frame 11 is fixed vertically so that the bush 20 of the sample is positioned at the upper end, and under a second condition in which the sample is fixed in a state of being inclined by 10 degrees with respect to the vertical plane. At this time, the power cable 3 extending from the bushing 20 is bent so that the radius of the curve is 70mm (R1-70 mm, D1-70 mm, and H1-70 mm). In the test, the opening on the contact terminal 4 side was sealed by the sealing mechanism.
For the samples set under the above-described first and second conditions, the samples were measured in accordance with "JIS C0920: 2003 peripheral protection class (IP23) "of electric machine tools. Specifically, three protection tests shown below were performed. The contents and summaries of the three protection tests are as follows.
Test 1: human body protection against dangerous sites within the proximity of the periphery
The test is performed to protect the finger from approaching the dangerous part, and is performed to ensure an appropriate space distance between the distal end of the articulated test finger (probe for inspecting the proximity) having a diameter of 12mm and a length of 80mm and the dangerous part. In the present embodiment, the proximity inspection probe is inserted into the gap (opening portion) between the lead-in portion 13 and the power supply cable 3 in the bush 20 of the sample with the pressing force of 10N ± 1N.
Test 2: protection of electrical equipment within the periphery against intrusion of solid matter from outside
The test is performed to protect foreign solid materials having a diameter of 12.5mm or more, and is performed to detect the intrusion of the whole probe of spherical solid materials having a diameter of 12.5 mm. In this example, a solid probe, which is a steel ball having a diameter of 12.5 to 12.7mm, was inserted into a gap (opening) between the inlet 13 of the sample bush 20 and the power cable 3 with a pressing force of 30N. + -.3N.
Test 3: protection of electrical equipment within a periphery against harmful effects of water intrusion
The test is performed to determine whether or not the sprinkled water is protected, and whether or not the water sprayed on both sides at an angle of 60 degrees from the vertical has a harmful effect. In this example, a test was conducted using a water spray nozzle (JIS C0920: 2003 FIG. 5IPX 3). Specifically, a shield plate with a balance weight was used, the water spray rate was 10L ± 0.5L per minute, the water spray angle was ± 60 degrees with respect to the vertical direction, the water pressure on the inflow side (50kPa to 150kPa) was set at the water spray rate, the distance from the nozzle to the outer contour surface of the sample was 300mm to 500mm, and the test time was 1 minute/m 2 (5 minutes at the lowest).
As a result of the above test, in test 1, the proximity probe did not penetrate into the sample. In test 2, no solid matter inspection probe penetrated into the sample. In test 3, under both the first and second conditions, no water entered the sample. From this, it is understood that the first connector 10 to which the bush 20 of the present embodiment is attached is excellent in waterproofness, dust-proofness, and safety.
While one embodiment has been described above, one aspect of the present invention is not limited to the above embodiment. Various modifications can be made without departing from the scope of the invention.
< modification 1>
In the above embodiment, the first ribs 23 are arranged in plural in the extending direction of the body portion 21 and formed at equal intervals in the extending direction (X-axis direction) of the inner peripheral surface 22 of the body portion 21 as a whole, but for example, plural may be arranged at a position closer to the contact terminal 4 side than the center position in the extending direction of the body portion 21 (see fig. 6), or one may be arranged. In other words, the first rib 23 may not be formed at a position closer to the lead storage battery 1 than the center position in the extending direction of the body portion 21. In the power supply cable 3 introduced into the main body portion 21 of the first connector 10, the amount of bending of the contact terminal 4 side with respect to the center position in the extending direction (X-axis direction) of the main body portion 21 is smaller than the amount of bending of the other end portion side (lead storage battery 1 side) of the power supply cable 3. That is, the amount of clearance between the inner peripheral surface 22 of the body portion 21 and the outer peripheral surface 3a of the power cable 3 is small. Therefore, in the bush 20B according to modification 1, the first rib 23 can be more reliably maintained in contact with the outer peripheral surface 3a of the power supply cable 3.
< modification 2>
Next, the bush 120 according to modification 2 and the first connector (connector) 110 according to modification 2 to which the bush 120 is attached will be described mainly with reference to fig. 8 to 10. The first connector 110 according to modification 2 is different from the first connector 10 according to the above-described embodiment in the shape of the lead-in portion 113 and the cap portion 127 when viewed from the X-axis direction. Here, only the shapes of the introducing portion 113 and the lid portion 127, which are different from the above-described embodiment, will be described in detail, and the description thereof will be omitted.
The shapes of the drawing portion 113 and the lid portion 127 when viewed from the X-axis direction in a plan view are formed to be once rotationally symmetrical. The one-time rotational symmetry is a property of showing symmetry overlapping (coinciding) with a figure of interest only when the figure is rotated 360 degrees around the center of the figure as a rotation axis. The shapes of the drawing portion 113 and the lid portion 127 when viewed from the X-axis direction in plan view are formed asymmetrically in the direction (Z-axis direction) orthogonal to the direction (Y-axis direction) in which the main body portions 21, 21 are arranged and the X-axis direction. Specifically, the shapes of the drawing portion 113 and the lid portion 127 when viewed from the X axis direction in a plan view are different between the linear portion 127e and the curved portion 127 f.
A flat surface 113e is formed on a part of the outer peripheral surface 113d of the introduction portion 113. The first connector 110 is attached so that the flat surface 113e contacts the wall surface 107a (see fig. 5) of the forklift 100. A curved surface 13f is formed on the outer peripheral surface 113d of the lead-in portion 113 on the surface facing the flat surface 113e. The lid portion 127 is formed with a linear portion 127e extending along the direction in which the body portions 21, 21 are arranged (Y-axis direction) when the lid portion 127 is viewed in a plan view from the X-axis direction in accordance with the shape of the lead-in portion 113. In addition, the lid 127 has a curved portion 127f formed in the Z-axis direction. Thus, the outer shape of the lid 127 when viewed from the X-axis direction in plan view matches the outer shape of the introduction portion 113 when viewed from the X-axis direction in plan view in dimensional shape.
In the first connector 110 to which the bushing 120 according to the modification 2 is attached according to the embodiment, similarly to the bushing 120 and the first connector 110 according to the above-described embodiment, even if the power cable 3 is bent, the first rib 23 protruding from the inner peripheral surface 22 of the body portion 21 can be maintained in contact with the outer peripheral surface 3a of the power cable 3, and water can be prevented from entering the inside of the first connector 10 along the gap between the inlet portion 13 and the body portion 21. By these synergistic effects, the waterproofness of the inlet 13 of the power cable 3 can be improved.
In the bush 120 according to modification 2, the shape of the lid portion 127 when viewed from the X axis direction in plan view is formed to be once rotationally symmetrical, and therefore, the body portion 21 for the positive electrode and the body portion 21 for the negative electrode are not inserted into the lead-in portion 113 in a state where they are erroneously mounted. As a result, defects such as short circuits can be avoided.
In the above-described embodiment and modification, the first rib 23 has flexibility as an example, but may not have flexibility. Even in this case, the water resistance can be improved as compared with the case where the first ribs 23 are not formed on the inner peripheral surface 22 of the body portion 21.
In the above-described embodiment and modification, the outer peripheral surface 25 of the main body 21 has been described as having a circular shape (circular cross section) when viewed from the X-axis direction, but may have a rectangular shape, an elliptical shape, or a shape formed by a curved line and a straight line. The shape of the lid 27 is not limited to the example of the above embodiment and the modification, and may be circular, elliptical, or a shape composed of straight lines and curved lines when viewed from the X-axis direction.
In the above-described embodiment and modification, the case where the one set of body portions 21 and 21 is formed in the cover portion 27 has been described as an example, but one or three or more body portions may be provided for one cover portion.
In the above-described embodiment and modification, the third rib 26 is formed on the outer peripheral surface 25 of the body portion 21 as an example, but the third rib 26 of the outer peripheral surface 25 may not be formed. The outer peripheral surface 25 of the main body 21 and the inner peripheral surface 13b of the inlet 13 in the bush 20 may be bonded by an adhesive, or a sheet member may be disposed.
In the above-described embodiment and modification, the present invention is described as being applied to the forklift 100 as an example, but the present invention may be applied to an electric vehicle such as a golf cart.
[ description of symbols ]
A lead-acid battery, 3.. a power supply cable, 3a.. an outer peripheral surface, 6.. a power supply controller, 7.. a power supply cable, 10, 110.. a first connector (connector), 10B.. a front end of a lead-in portion, 11 … frame, 12.. a protective portion, 13.. a lead-in portion, 13e, 113e.. a flat surface, 20A, 20B, 120 … bush, 21 …, 22.. an inner peripheral surface, 23.. a first rib (first protruding portion), 25.. an outer peripheral surface, 26.. a third rib (third protruding portion), 27, 127.. a cover portion, 27e, 127e.. a straight portion, 28.. an inner peripheral surface, 29 … second rib (second protruding portion), 50 … second connector (connector), …, 52, …, and 25B.. a protective portion, 8653, and a forklift truck (vehicle electrical drive portion 100).
Claims (19)
1. A bushing for use in a connector, the connector comprising: a protection portion that covers the contact terminal disposed at one end of the power cable; and a lead-in part which leads the power cable into the protection part,
the bushing includes:
a cylindrical main body portion extending in one direction, having a first insertion hole into which the power cable is inserted, and inserted into the lead-in portion;
an annular first protruding portion that is formed along a circumferential direction of an inner circumferential surface on which the first insertion hole is formed, and that protrudes inward from the inner circumferential surface; and
a cover portion having: a second insertion hole that is arranged on one end side of the body portion in the one direction and communicates with the first insertion hole; and a flange portion that protrudes outward from an outer shape of the main body portion in a plan view seen from the one direction,
the flange portion is formed to contact a tip end of the introduction portion in a state of facing the one direction when the main body portion is inserted into the introduction portion.
2. The bushing of claim 1,
the main body portion has: a first main body part into which the power cable connected to a positive electrode is inserted; and a second main body part to which the power cable connected to the negative electrode is inserted,
the cover portion connects the first body portion and the second body portion.
3. The bushing of claim 2,
the lid portion is formed with a linear portion extending along a direction in which the first and second body portions are arranged, when the lid portion is viewed in plan from the one direction.
4. A bushing according to claim 2 or 3,
the shape of the lid portion in a plan view seen from the one direction is formed so as to be asymmetric in a direction orthogonal to both the direction in which the first and second body portions are arranged and the one direction.
5. A bushing according to claim 2 or 3,
the shape of the cover portion in a plan view seen from the one direction is formed to be once rotationally symmetrical.
6. A bushing for use in a connector, the connector comprising: a protection portion that covers the contact terminal disposed at one end of the power cable; and a lead-in part which leads the power cable into the protection part,
the bushing includes:
a cylindrical main body portion extending in one direction, having a first insertion hole into which the power cable is inserted, and inserted into the lead-in portion;
an annular first protruding portion that is formed along a circumferential direction of an inner circumferential surface on which the first insertion hole is formed, and that protrudes inward from the inner circumferential surface; and
a cover portion having: a second insertion hole that is arranged on one end side of the body portion in the one direction and communicates with the first insertion hole; and a flange portion that protrudes outward from an outer shape of the main body portion in a plan view seen from the one direction,
the main body portion has: a first main body part into which the power cable connected to a positive electrode is inserted; and a second main body part to which the power cable connected to the negative electrode is inserted,
the cover portion connects the first body portion and the second body portion,
the shape of the cover portion in a plan view seen from the one direction is formed to be once rotationally symmetrical.
7. A bushing according to any one of claims 1 to 6,
the size shape of the outer shape of the cover portion in a plan view seen from the one direction coincides with the size shape of the outer shape of the introduction portion in a plan view seen from the one direction.
8. The bushing of any of claims 1 to 7, further comprising:
and a ring-shaped second protruding portion that is formed along a circumferential direction of an inner circumferential surface on which the second insertion hole is formed, and protrudes inward from the inner circumferential surface.
9. A bushing according to any one of claims 1 to 8,
the first protruding part has flexibility.
10. The bushing according to any of claims 1 to 9,
the first projecting portion is disposed closer to the contact terminal than a center position in an extending direction of the main body portion.
11. The bushing according to any one of claims 1 to 10,
the first protruding portion is arranged in plurality in the extending direction of the main body portion.
12. The bushing of any of claims 1 to 11, further comprising:
and an annular third projecting portion formed along a circumferential direction of an outer peripheral surface of the body portion and projecting outward from the outer peripheral surface.
13. A connector, comprising:
a connector having: a protection portion that covers a contact terminal disposed at one end of the power cable; and a lead-in part that leads the power cable into the protection part; and
a bushing according to any one of claims 1 to 12,
the main body part is inserted into the introduction part.
14. The connector of claim 13,
the outer peripheral surface of the main body portion and the inner peripheral surface of the introduction portion in the bush are bonded by an adhesive.
15. The connector according to claim 13 or 14,
a flat surface is formed on a part of the outer peripheral surfaces of the protection portion and the introduction portion.
16. A lead-acid battery, characterized by comprising:
at least one lead storage battery;
the power supply cable is electrically connected with the lead storage battery; and
the connector according to any one of claims 13 to 15,
the power cable is inserted in the lead-in portion of the connector.
17. An electric vehicle, characterized in that,
comprising a lead-acid battery as claimed in claim 16,
the connector is mounted in a state in which the second insertion hole in the flange portion faces upward.
18. The electric vehicle according to claim 17,
the power cable inserted into the second insertion hole extends upward in the vertical direction and has a curved portion.
19. The electric vehicle according to claim 17 or 18,
the connector is attached in a state of being exposed to the outside of the vehicle body of the electric vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPPCT/JP2017/039963 | 2017-11-06 | ||
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111295806A true CN111295806A (en) | 2020-06-16 |
| CN111295806B CN111295806B (en) | 2021-08-13 |
Family
ID=66331668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880070369.6A Active CN111295806B (en) | 2017-11-06 | 2018-04-23 | Bush, connector, lead storage battery and electric vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6536754B1 (en) |
| CN (1) | CN111295806B (en) |
| WO (2) | WO2019087396A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112652868A (en) * | 2020-12-31 | 2021-04-13 | 湖北亿纬动力有限公司 | Utmost point post protective sheath and battery |
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| JP3024629U (en) * | 1995-11-13 | 1996-05-31 | 株式会社トミー | Connection structure of power supply unit |
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| JP2015220213A (en) * | 2014-05-21 | 2015-12-07 | 日本圧着端子製造株式会社 | connector |
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| JP2017027785A (en) * | 2015-07-22 | 2017-02-02 | 矢崎総業株式会社 | Electric wire with connector |
| CN107332035A (en) * | 2017-07-21 | 2017-11-07 | 江苏赛洋机电科技有限公司 | The new-energy automobile electric connector of the integral preposition installation of cable sealing ring and protective case |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08180928A (en) * | 1994-10-24 | 1996-07-12 | Yazaki Corp | Waterproof connector |
| JP2002093515A (en) * | 2000-09-11 | 2002-03-29 | Yazaki Corp | Waterproof connector |
| JP6431471B2 (en) * | 2015-12-22 | 2018-11-28 | 矢崎総業株式会社 | Sealing member and connector |
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2017
- 2017-11-06 WO PCT/JP2017/039963 patent/WO2019087396A1/en active Application Filing
-
2018
- 2018-04-23 WO PCT/JP2018/016483 patent/WO2019087434A1/en active Application Filing
- 2018-04-23 JP JP2018553502A patent/JP6536754B1/en active Active
- 2018-04-23 CN CN201880070369.6A patent/CN111295806B/en active Active
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| JPS5593982U (en) * | 1978-12-22 | 1980-06-28 | ||
| JPS6276177A (en) * | 1985-09-25 | 1987-04-08 | ト−マス アンド ベツツ コ−ポレ−シヨン | Connector assembly |
| JP3024629U (en) * | 1995-11-13 | 1996-05-31 | 株式会社トミー | Connection structure of power supply unit |
| JP2001208813A (en) * | 2000-01-25 | 2001-08-03 | Shin Kobe Electric Mach Co Ltd | System for determining residual life of lead-acid battery for motor-driven forklift |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019087434A1 (en) | 2019-11-14 |
| CN111295806B (en) | 2021-08-13 |
| JP6536754B1 (en) | 2019-07-03 |
| WO2019087434A1 (en) | 2019-05-09 |
| WO2019087396A1 (en) | 2019-05-09 |
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