CN203311943U - Insulator - Google Patents

Insulator Download PDF

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Publication number
CN203311943U
CN203311943U CN201320107246XU CN201320107246U CN203311943U CN 203311943 U CN203311943 U CN 203311943U CN 201320107246X U CN201320107246X U CN 201320107246XU CN 201320107246 U CN201320107246 U CN 201320107246U CN 203311943 U CN203311943 U CN 203311943U
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CN
China
Prior art keywords
insulator
sidewall
bolt
ditch section
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201320107246XU
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Chinese (zh)
Inventor
大田宽
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Toyota Motor Corp
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Toyota Motor Corp
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Publication date
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Priority to CN201320107246XU priority Critical patent/CN203311943U/en
Application granted granted Critical
Publication of CN203311943U publication Critical patent/CN203311943U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Connection Of Batteries Or Terminals (AREA)

Abstract

The utility model provides an insulator. The insulator (1) is provided with a side wall (121) used for surrounding a fastening bolt (4) and a bottom face (122a). A groove part (13), which recesses into the bottom face (122a) and to the inner face of the side wall (121), is formed at a junction part (123) at which the side wall (121) and the bottom face (122a) intersect. Through adoption of the structure of the insulator, not only cracks are prevented from being generated at the junction part (123) at which the side wall (121) and the bottom face (122a) intersect, but also the abutment length of the bolt is ensured.

Description

Insulator
Technical field
The utility model relates to a kind of insulator, is specifically related to a kind of insulator such as bus connecting portion for battery etc.
Background technology
In the situation that battery is connected in series or in parallel or the electric energy of battery is outputed to outside etc., need on the outside terminal of battery, connect bus.And, in the syndeton between the outside terminal of bus and battery, need to use the fastening screw screw bolt and nut.For example, first fastening bolt is placed in the insulator of the upper configuration of battery case (lid), then the through hole of outside terminal and bus is enclosed within on this fastening bolt, again by nut sleeve on this fastening bolt and tighten, just bus can be connected to by (for example,, with reference to patent documentation 1,2) on outside terminal.For the insulator used in the syndeton that makes this bus can maintain fastening bolt, insulator is provided with the sidewall be used to the bolt head that surrounds fastening bolt.The effect of this sidewall is when fastening nut, to stop fastening bolt to rotate.
Yet when fastening nut carried out fastening bus, the sidewall of insulator tilted laterally because of the extrusion that is subject to bolt head, the bight that intersect the bottom surface that makes stress focus on this sidewall and insulator, thus may cause this generation crack, bight.As the method addressed this problem, can be by the thickening of the sidewall of insulator, to reduce the tilt quantity of sidewall.But the thickness increase of sidewall can make cell thickness increase, thereby the thickness that increases sidewall is not very wise move.In addition, can by the part that intersect the sidewall by insulator and bottom surface, form arc angle and relax concentrating of stress.In the case, as shown in Figure 8, the bottom surface 322a of the inner face of sidewall 321 and insulator shrinks to private side in the part of arc angle R.Therefore, need the angle edge of cutting bolt head 4a, come shape that should arc angle R.So, the butt length K of bolt (length of the contact portion between the sidewall 321 of bolt head 4a and insulator 301) just can shorten.
[patent documentation 1]: TOHKEMY 2010-282847 communique
[patent documentation 2]: TOHKEMY 2011-066014 communique
The utility model content
For the problems referred to above, the purpose of this utility model is, provides a kind of and can prevent that the sidewall of the bolt head round fastening bolt (bolt fastener) and the junction (bight) that intersect bottom surface from producing crack, can guarantee again the insulator of the butt length of bolt.
As the technical scheme solved the problems of the technologies described above, insulator of the present utility model for example has, be used to (surrounding bolt fastener, the bolt head of fastening bolt) sidewall and bottom surface, the junction (bight) of intersecting in described sidewall and described bottom surface, be formed with the ditch section be recessed in described side wall inner surface and described bottom surface.
The advantage of insulator of the present utility model is, the junction (bight) of intersecting in sidewall and the bottom surface of insulator is formed with ditch section, so, for example, with the fastening nuts bus time, the stress of the junction that intersect sidewall and bottom surface is concentrated can access mitigation (stress can be dispersed), thereby can prevent the generation crack, junction that intersect this sidewall and bottom surface.And ditch section adopts the pit shape (cross sectional shape) that is absorbed in side wall inner surface and bottom surface, does not shrink to private side side wall inner surface and bottom surface.So, there is no need to cut bolt fastener (for example bolt head), can guarantee the butt length of bolt fastener.
The accompanying drawing explanation
Fig. 1 means the sectional view of an example of the bus syndeton of the battery that has adopted insulator of the present utility model.
Fig. 2 is the stereogram of insulator and fastening bolt.
Fig. 3 is the vertical view of insulator.
Fig. 4 (A)~Fig. 4 (D) means the exemplary plot of the cross sectional shape of the ditch section formed on insulator.
Fig. 5 (A)~Fig. 5 (D) means the exemplary plot that forms discretely ditch section on insulator.
Fig. 6 means the sectional view of bus syndeton of the battery of existing use insulator.
Fig. 7 means the schematic diagram of the existing problem of existing insulator.
Fig. 8 means that the part that intersects the sidewall of insulator and bottom surface is formed the sectional view in the situation of arc angle.
Embodiment
Below, by reference to the accompanying drawings execution mode of the present utility model is described.At first, with reference to Fig. 1~Fig. 3, the bus syndeton of the battery of applicable insulator of the present utility model is illustrated.
Bus syndeton in this example is, on the outside terminal 2 of the battery of the installings such as hybrid electric vehicle (HV) or electric motor car (EV), is electrically connected to the structure of bus 3, and as shown in Figure 1, it comprises insulator 1, fastening bolt 4 and nut 5 etc.As fastening bolt 4, at this, adopting bolt head 4a is dimetric four corner bolts.Insulator 1 is configured on the assigned position covered on 20.Lid 20 is that the lid of the peristome of bottom tube-like housing main body (not shown) is arranged for obstruction.Battery case is comprised of housing main body and lid 20.Insulator 1 is the parts made from insulating material, as shown in Figure 2, comprises baseplate part 11 and is located at the bolt maintaining part 12 of an end of this baseplate part 11.
The upper stator (not shown) of placing outside terminal 2 of end face (with the reverse side of lid 20 faces that contact) at baseplate part 11.Wai baseplate part 11, formed perisporium 11a on Zhou Vela, this perisporium 11a can surround the outer peripheral edges of the stator of the outside terminal 2 of placing on the end face of baseplate part 11, and this perisporium 11a can guarantee the stator of outside terminal 2 and the insulation between lid 20.In addition, baseplate part 11 is provided with through hole 11b.This through hole 11b is fixed on by this insulator 1 and outside terminal 2 patchhole that the rivet (not shown) that covers on 20 inserts.
Bolt maintaining part 12 has sidewall 121, and this sidewall 121 can surround four faces of bolt head (quadrangle) 4a of fastening bolt 4.Sidewall 121 is the bottom 122(baseplate parts 11 from insulator 1) towards the extended wall body of top surface side (reverse side of lid 20 sides).This sidewall 121 and bottom 122 formations have the bolt reception hole 120 that is roughly foursquare peristome.
Among four inner face 121a, 121b of sidewall 121,121c, 121d, distance between two faces in opposite directions (distance between inner face 121a and 121d, and inner face 121b and 121c between distance) be processed to respectively with two distance between the surface sizes of the bolt head 4a of fastening bolt (four corner bolts) 4 corresponding so that the inside of this sidewall 121, be can insert the bolt head 4a of fastening bolt 4 in bolt reception hole 120.
Outside terminal 2 as described above, has the stator (not shown) on the end face of the baseplate part 11 that is placed on insulator 1.Externally terminal 2 is provided with the slotting logical through hole 2a be used to the spiral shell body 4b that makes fastening bolt 4.In addition, externally the position of the 11b of the through hole corresponding to above-mentioned insulator 1 of the stator of terminal 2 is provided with through hole (not shown).
Bus 3 is links of realizing the electrical connection of (between electrode) between the terminal of battery.Bus 3 also can be used to connect by the terminal of the electric energy of battery to the electric equipment of outside output.This bus 3 is provided with the spiral shell body 4b that makes fastening bolt 4 and inserts logical through hole 3a.
Originally, when fastening nut 5 fastening bus 3, the bolt head 4a of fastening bolt 4 can rotate with nut 5, but in this structure, the sidewall 121 of bolt head 4a insulated body 1 surrounds, and this sidewall 121 has stoped the rotation of fastening bolt 4, so nut 5 can be tightened.
Insulator 1 in present embodiment is characterised in that: such as shown in FIG. 1 to 3, at the sidewall 121 of the bolt head 4a that surrounds fastening bolt 4 and the end face of the bottom surface 122a(bottom 122 of insulator 1) crossing junction (bight) 123, be formed with the inner face 121a~121d and the interior ditch section 13 of bottom surface 122a that are recessed into sidewall 121.The cross sectional shape of this ditch section 13 is roughly semicircle.This ditch section 13 is formed on the whole week of the crossing junction 123 of sidewall 121 and bottom surface 122a continuously.
By forming such ditch section 13, can prevent that the junction (bight) 123 that sidewall 121 and bottom surface 122a intersect from producing the situation in crack, can guarantee again the butt length of fastening bolt 4.Below, this is described in detail.
At first, with reference to Fig. 6, the structure that the bight of not intersecting in sidewall and the bottom surface of insulator is formed to ditch section describes.In Fig. 6, except not at the sidewall 321 of insulator 301 and the end face of bottom surface 322a(bottom 322) crossing bight forms ditch section, the bus syndeton of other parts and Fig. 1 is basic identical, thereby, except insulator 301, to miscellaneous part (parts identical with parts in Fig. 1) use with Fig. 1 in identical mark.
In example shown in Figure 6 (example of prior art), be equally also that when fastening nut 4, the sidewall 321 of insulator 301 plays the effect that stops fastening bolt 4 to rotate.But, during fastening nut 4 fastening bus 3, the sidewall 321 of insulator 301 is because of the extrusion that is subject to bolt head 4a tilt laterally (with reference to the locking wire part of Fig. 7), make stress focus on the PC place, bight (top, angle) that this sidewall 321 and bottom surface 322a intersect, thereby may cause this bight PC generation crack.
To this, the insulator 1 of present embodiment is such as shown in FIG. 1 to 3, at the end face of sidewall 121 with bottom surface 122a(bottom 122) crossing junction (bight) 123, be formed with the inner face 121a~121d and the interior ditch section 13 of bottom surface 122a that are recessed into sidewall 121, thereby, can prevent that the junction (bight) 123 that sidewall 121 and bottom surface 122a intersect from producing crack.In addition, because the ditch section 13 of the insulator 1 of present embodiment has inner face 121a~121d of being recessed into sidewall 121 and the cross sectional shape in the 122a of bottom surface, sidewall 121 can not shrink to private side.Thereby, do not need to cut the bolt head 4a of fastening bolt 4, can guarantee the butt length of fastening bolt 4.
At this, the cross sectional shape of ditch section 13 so long as bottom line La as shown in Fig. 4 (A), ditch section 13 lower than the shape of the end face (bottom surface 122a) of bottom 122 (that is, ditch section 13 is recessed into the inner face of sidewall 121 and the shape in the 122a of bottom surface), get final product.The degree of depth to the difference of height h(ditch section 13 between the bottom line La of ditch section 13 and the end face of bottom 122 (bottom surface 122a)) be not particularly limited.For example, can adopt the 13b of ditch section of the cross sectional shape of the difference of height less (being less than the difference of height of the ditch section 13 in Fig. 4 (A)) between the end face (bottom surface 122a) with bottom line La shown in Fig. 4 (B), ditch section 13 and bottom 122.
In addition, the cross sectional shape that Pass Ravine section is arranged, except the shape with certain curvature that can adopt semicircle and so on, for example, also can adopt the 13c of ditch section with cross sectional shape shown in Fig. 4 (C), that formed by curve combination arbitrarily, or have the 13d of ditch section of cross sectional shape shown in Fig. 4 (D), that formed with the angle of intersection that are greater than 90 degree by many straight lines.In addition, the cross sectional shape of ditch section can be also the shape constituted by curve and straight line.
In addition, in the above-described embodiment, ditch section 13 is formed on the whole week of the crossing junction 123 of sidewall 121 and bottom surface 122a continuously, but is not limited to this.Also ditch section 13 can be formed on discretely on the crossing junction 123 of sidewall 121 and bottom surface 122a.Below, with reference to Fig. 5 (A)~Fig. 5 (D), such structure is described.
In example shown in Fig. 5 (A), in four inner face 121a~121d of sidewall 121, on in opposite directions a pair of inner face 121b and 121c and the bottom surface 122a junction 123 of intersecting on the short side direction of insulator 1, be formed with respectively cross sectional shape and be roughly semicircular ditch section 13.In example shown in Fig. 5 (B), in four inner face 121a~121d of sidewall 121, on in opposite directions a pair of inner face 121a and 121d and the bottom surface 122a junction 123 of intersecting on the long side direction of insulator 1, formed respectively cross sectional shape and be roughly semicircular ditch section 13.In the example shown in this Fig. 5 (B), staggered in two positions of ditch section 13 on short side direction.In example shown in Fig. 5 (C), formed four ditch sections 13 on the junction 123 that sidewall 121 and bottom surface 122a intersect, these four ditch sections 13 are distributed in overlooks on four corners that are roughly foursquare bolt reception hole 120.In example shown in Fig. 5 (D), on the junction 123 that sidewall 121 and bottom surface 122a intersect, discrete and be irregularly formed a plurality of (being 7 in Fig. 5 (D)) ditch section 13.
Even if adopt structure such, form discretely ditch section 13 on the junction 123 that sidewall 121 and bottom surface 122a intersect, also can prevent that the junction (bight) 123 that sidewall 121 and bottom surface 122a intersect from producing the situation in crack, and can guarantee the butt length of bolt.
In addition, in the situation that form discretely ditch section like this, the cross sectional shape of ditch section also can adopt the shape shown in Fig. 4 (B), Fig. 4 (C), Fig. 4 (D).
In the above-described embodiment, example for application insulator of the present utility model in the structure that connects bus at employing four corner bolts as fastening bolt 4 is illustrated, but be not limited to this, the utility model also is applicable to, and connects with other fastening bolts with polygonal bolt head such as hex boltss the insulator used in the structure of bus.In the case, as long as sidewall is arranged to surround the sidewall of polygonal bolt head such as hex bolts.In other words, as long as make the plan view shape of the peristome of bolt reception hole, be the polygonals such as hexagon.
In addition, the utility model also is applicable to, and connects with the fastening bolt with oval bolt head the insulator used in the structure of bus.In addition, the utility model also is applicable to, and takes in the insulator of the nut parts such as tetragonal nut or hex nut.
In the above-described embodiment, show the example that the utility model is applied to the insulator used in the bus syndeton of battery, but be not limited to this, the utility model also can be applied to the insulator used in other electric connection structure.

Claims (1)

1. an insulator, have sidewall and bottom surface be used to surrounding bolt fastener, it is characterized in that:
The junction of intersecting in described sidewall and described bottom surface, be formed with the ditch section be recessed in described side wall inner surface and bottom surface.
CN201320107246XU 2013-03-08 2013-03-08 Insulator Expired - Lifetime CN203311943U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320107246XU CN203311943U (en) 2013-03-08 2013-03-08 Insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320107246XU CN203311943U (en) 2013-03-08 2013-03-08 Insulator

Publications (1)

Publication Number Publication Date
CN203311943U true CN203311943U (en) 2013-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320107246XU Expired - Lifetime CN203311943U (en) 2013-03-08 2013-03-08 Insulator

Country Status (1)

Country Link
CN (1) CN203311943U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018147682A (en) * 2017-03-03 2018-09-20 トヨタ自動車株式会社 Sealed battery and electrode terminal
JP2018147681A (en) * 2017-03-03 2018-09-20 トヨタ自動車株式会社 Sealed battery and electrode terminal
CN109026965A (en) * 2018-08-16 2018-12-18 株洲联诚集团控股股份有限公司 A kind of electric automobile high-voltage case built-in electrical insulation support base

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018147682A (en) * 2017-03-03 2018-09-20 トヨタ自動車株式会社 Sealed battery and electrode terminal
JP2018147681A (en) * 2017-03-03 2018-09-20 トヨタ自動車株式会社 Sealed battery and electrode terminal
CN109026965A (en) * 2018-08-16 2018-12-18 株洲联诚集团控股股份有限公司 A kind of electric automobile high-voltage case built-in electrical insulation support base

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20131127

CX01 Expiry of patent term