CN101365309A

CN101365309A - Electric vehicle housing having enclosed water-proof structure

Info

Publication number: CN101365309A
Application number: CNA2007100587190A
Authority: CN
Inventors: 孔昭松; 赵秋光; 吴海涛; 高栓邦
Original assignee: SONGZHENG ELECTRONICS CO Ltd TIANJIN CITY
Current assignee: Tianjin Santroll Electric Automobile Technology Co Ltd
Priority date: 2007-08-11
Filing date: 2007-08-11
Publication date: 2009-02-11
Anticipated expiration: 2027-08-11
Also published as: CN101365309B

Abstract

The invention discloses an electric vehicle outer shell of an electric vehicle controller, which has a sealing waterproof structure. The invention aims to provide the electric outer shell of electric vehicle controller which has a good waterproof capacity, can be installed fixedly, is convenient to maintain and be favorable to the heat dissipation of a power tube. The invention comprises an integral type shell body, an end closure and an elastic inner pad; the elastic inner pad clings to the end surface of the shell body and has the same shape as the end surface; a glue layer is arranged between the elastic inner pad and the end surface of the shell body; and a screw hole is formed on the outer surface of the shell body and provided with a mounting opening face outwards. The invention has the advantages of good sealing and waterproof capacity, good heat dissipation effect and more convenient maintenance. Furthermore, the invention can save production cost and substitute for the prior controller.

Description

Casing of electric vehicle controller with enclosed water-proof structure

Technical field

The invention belongs to a kind of controller of electric automobiles, is to belong to a kind of casing of electric vehicle controller with enclosed water-proof structure more specifically.

Background technology

At present, electric motor car comprises electric bicycle, electro-tricycle, battery-operated motor cycle etc., and controller need have good waterproof, shockproof, heat dispersion as the control maincenter part of electric motor car.If poor sealing, the controller for electric vehicle water inlet makes the components and parts short circuit of circuit board malfunctioning, causes controller to damage; In the quality problems feedback in the electric motor car market of reality, because the ratio that waterproof problem causes controller for electric vehicle to damage is over half, special in rainy and moist southern area, the waterproof problem of controller for electric vehicle is particularly outstanding.Thus, the complete water proofing property of current controller for electric vehicle still is a technical barrier of not capturing in industry, and this becomes a bottleneck problem that influences the electric motor car industry development.

The waterproof construction of controller for electric vehicle of the prior art is designed to following several:

1. complete encapsulating is sealed in the entire circuit plate among the housing with the form of complete encapsulating together with circuit element exactly, does like this to reach complete good waterproof effect, but do not possess like this do over again, reprocess, maintainability, simultaneously, the glue consumption of perfusion is very big, is unfavorable for saving production cost.

2. end caps encapsulating is done like this and can not be reached complete good waterproof effect, because the influence of operative skill if encapsulating is inhomogeneous, short Jiao Chu occurs, will leak, and circuit board element is damaged.

3. end caps adopts the harder flat rubber cushion of quality, this mode is waterproof fully, in the processing of reality, because the restriction of technology, the processing of section bar (promptly being housing) is not meticulous, at end face not only burr can appear, but also can bring end face not neat or have uneven, will cause section bar (promptly being housing) and the assembling of flat rubber cushion like this after, ductility, the scalability of traditional flat rubber cushion are bad, bring between end face and the flat rubber cushion sealing bad thus, the slit is arranged, leak easily; And with screw fastening end cap the time, during several screw unbalance stress, also warpage can appear between the end cap peace rubber cushion, and make section bar end face and rubber cushion that the slit be arranged, cause leaking.

In addition, also have housing to be made of loam cake and drain pan two parts, the space is left in the junction, causes poor sealing, and steam is easy to enter in the cavity at circuit board place by this space; And plastic end cap originally in the screw hole place embrittlement of end cap, is unfavorable for waterproof and sealing easily in throwing the screw assembling process into.

In a word, the structure of several water-tights of this of controller for electric vehicle of the prior art can not well reach than the satisfactory sealing waterproof effect, is the more scabrous technical problem of controller for electric vehicle technical field.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, a kind of good seal performance is provided, firm, easy to maintenance, as to help the power tube heat radiation casing of electric vehicle controller with enclosed water-proof structure is installed.

The present invention solves its technical problem and takes following technical scheme to realize: the present invention includes pad in integral housing, end cap, the elasticity, pad is close to described housing end face in the described elasticity, shape is consistent with the housing end face, be provided with glue layer between pad and the described housing end face in the described elasticity, the outer surface of described housing is provided with installing port screw hole outwardly.

The present invention can also take following technical scheme: the correspondence position of the outer surface screw hole of pad and end cap and integral housing is provided with screw hole in the described elasticity; Described end cap is a metal structure; Pad is made for expanded material in the described elasticity; Described expanded material is one or more in PORON material, CR material, EVA material, PE material, PU material, EPE material, PP material, XPE material, SBR material, EPDM material, PVC material, NBR material, IXPE material, AEPA material, NEPORNE material, the SEBS material; Described expanded material is preferably a kind of in EVA material, the EPDM material or two kinds.

The present invention compared with prior art has significant advantage and beneficial effect, is embodied in the following aspects:

1. the present invention adopts pad in the elasticity, and pad adopts novel expanded material to constitute in the elasticity, because its elasticity is big, retractility is strong, and sealing, damping, anti-skidding effect are very superior, thus can be good at filling up the gap between end cap and the housing end face, thus realize good sealed waterproof effect.

2. the present invention adopts the metal structure end cap to support and consolidates pad in the elasticity, because the intensity of metal is big, the interior pad of elasticity can be fitted on the end face of housing very closely.Simultaneously, adopt the end cap of metal structure, prevent from the screw precession process end cap twisted and split, easy and simple to handle, for ease of maintenaince.Reduce the complexity of technology, and saved cost.

3. in elasticity, be provided with glue layer between the end face of pad and housing, the interior pad of elasticity is bonded on the end face fully, completely cut off steam and infiltrated enclosure interior, guaranteed waterproof effect.

The present invention adopt the strip gap the card spiral-lock in the line outlet end cap, be beneficial to the sequential output of electric wire and use the glue sealing line outlet.

Description of drawings

Fig. 1 is a schematic cross-section of the present invention;

Fig. 2 is the structural representation that has pad 4 in the line outlet elasticity of the present invention;

Fig. 3 is end cap 5 schematic diagrames of the present invention;

Fig. 4 is the structural representation that the present invention has the end cap 2 of line outlet;

Fig. 5 is that the present invention assembles schematic diagram.

Embodiment

Below in conjunction with accompanying drawing the embodiment of the invention is further described:

Referring to Fig. 1-5:1 is screw hole on the housing, the 2nd, have the end cap of line outlet, the 3rd, strip gap card, the 4th, have pad in the elasticity of line outlet, the 5th, end cap, screw hole on 6 end caps, the 7th, pad in the elasticity, the 8th, line outlet, the 9th, housing, 10, the 11st, the end face of housing, the 12nd, the line outlet of pad in the elasticity.

Technical scheme of the present invention is as follows: the present invention includes

pad

4,7 in integral housing 9,

end cap

2,5, the elasticity,

pad

4,7 is close to described housing 9 end faces 10,11 in the described elasticity, the shape of

pad

4,7 is consistent with housing 9 end faces 10,11 in the elasticity, (glue layer is very thin to be provided with glue layer between

pad

4,7 and described housing 9 end faces 10,11 in the described elasticity, sign is not come out in the accompanying drawings, it plays and gets final product filling up 4,7 effects that are adhered on the end face 10,11 of housing 9 in the elasticity), the outer surface of described housing 9 is provided with installing port screw hole 1 outwardly.

Technical scheme of the present invention also comprises: the correspondence position of the outer surface screw hole 1 of

pad

4,7 and

end cap

2,5 and integral housing 9 is provided with screw hole 6 in the described elasticity; Described

end cap

2,5 is a metal structure;

Pad

4,7 is made for expanded material in the described elasticity; Described expanded material is one or more in PORON material, CR material, EVA material, PE material, PU material, EPE material, PP material, XPE material, SBR material, EPDM material, PVC material, NBR material, IXPE material, AEPA material, NEPORNE material, the SEBS material; Described expanded material is preferably a kind of in EVA material, the EPDM material or two kinds.

Pad

4,7 adopts novel expanded material in the elasticity of the present invention, as the EVA product of rubber and plastic is novel environment friendly plastics expanded material (Chinese name: poly-second-ethyl acetate), have advantages such as good buffering, antidetonation, heat insulation, moistureproof, resist chemical, and nontoxic, do not absorb water.The EVA product of rubber and plastic can shape through design, and its shockproof properties is better than polystyrene traditional expanded materials such as (foams), and compliance with environmental protection requirements, is the optimal selection of exported product.With respect to Shockproof packaging can cut, moulding; Because of density variation is bigger, purposes more widely can also be arranged.Characteristics, resistance to water: airtight foam structure, do not absorb water, protection against the tide, water resistance is good; Rotproofness: the corrosion of chemicals such as sea water resistance, grease, acid, alkali, antibiotic, nontoxic, tasteless, pollution-free; Processability: non junction, and be easy to carry out hot pressing, cut out, processing such as gluing, applying; Against shock: resilience and tension stress height, toughness is strong, has good shockproof/shock-absorbing capacity; Heat insulating ability: heat insulation, heat-insulating and cold and low temperature performance excellent can be cold-resistant and tan by the sun; Sound insulation: airtight abscess, soundproof effect is good;

This material of EPDM (Chinese name: the ethylene propylene diene rubber ethylene propylene diene rubber is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon) has shock resistance and absorbs, and good springiness, anti-skid wearable, anti-ozone are nontoxic, flame-resistant high-temperature-resistant, cold-resistant, ageing-resistant, advantage such as the life-span is grown;

Other expanded material is as characteristics quality softness in PORON material, CR material, PE material, PU material, EPE material, PP material, XPE material, SBR material, PVC material, NBR material, IXPE material, AEPA material, NEPORNE material, the SEBS material, elasticity is big, retractility good (its characteristics are prior art, do not repeat herein).

The characteristics of all expanded materials are the quality softnesses, and elasticity is big, and retractility is good, can be good at filling up the gap between

end cap

2,5 and housing 9 end faces 10,11 under pressure, thereby realize good sealed waterproof effect.

The present invention adopts metal

structure end cap

2,5, is used for supporting and consolidating in the elasticity and fill up 4,7, because the intensity of metal is big,

pad

4,7 can be fitted on the end face 10,11 of housing 9 very closely in the elasticity so can make.Simultaneously, adopt the

end cap

2,5 of metal material, fashionable because its quality is hard in screw threads, can prevent in the screw precession process end

cap

2,5 stubborn splitting, so easy and simple to handle, for ease of maintenaince.Simultaneously can use end cap repeatedly,, save production cost, reduce waste with respect to traditional plastic end cover.

In elasticity, fill up 4,7 and the end face 10,11 of housing between be provided with glue layer, make that

pad

4,7 is bonded on the end face 10,11 fully in the elasticity, completely cut off steam and infiltrated housing 9 cavity body inside, guaranteed better waterproof effect.

Card 3 spiral-locks in strip gap are in end cap 2 line outlets 8, and the strip gap in the card 3 is used to block the electric wire of output, the width in strip gap and bar number according to electric wire what and decide, it is good just being full of the strip gap with electric wire, helps like this sealing; Pour into the surface of adhesive again, make the abundant sealed wire of adhesive, thereby preferably resolve the waterproof sealing problem of line outlet in the gap at card 3 places to card 3.

Referring to Fig. 1-5, assembling process of the present invention is:

The first step: the one side that has glue layer of pad 7 (having smeared glue layer in advance) is bonded in housing 9 and (has placed circuit board in the inner chamber of housing 9 in the elasticity that will be softer earlier, because this partial content is not a content of the present invention, former no longer detailed description) on the end face 10, interior pad 7 of elasticity and end face 10 are combined closely; Afterwards, end cap 5 is placed in the elasticity pad 7 one sides, passes the

screw hole

6,1 on the pad 7 and housing 9 in end cap 5, the elasticity successively with screw, and firmly screw.Make housing 9, the interior pad 7 of elasticity, end face 10 can cooperate and reach preferable sealed waterproof effect closely.

Second step: with electric wire fill up 4 in the elasticity, the hollow position (being line outlet 6) of end cap 2 draws, again will the elasticity of band line outlet in the end face 11 of pad 4, end cap 2 and housing 9 combine closely (the same first step of concrete grammar); Afterwards electric wire is not gone in the strip gap of card 3 according to corresponding thickness degree, accomplish that electric wire is full of the strip gap uniformly as far as possible.Inwardly shift onto card 3 in the line outlet 8 of end cap 2 along electric wire afterwards, at last, encapsulating is lived the clearance seal between electric wire, fastener 6 and end cap 2 line outlets, and passes the screw hole 1 on the pad 4 and housing 9 in end cap 2, the elasticity successively with screw, and firmly screw, thereby finish whole assembling process.

Utilize technical solutions according to the invention, or those skilled in the art designing the similar techniques scheme under the inspiration of technical solution of the present invention, and reach above-mentioned technique effect, all is to fall into protection scope of the present invention.

Claims

1. casing of electric vehicle controller with enclosed water-proof structure, comprise integral housing, end cap, it is characterized in that: also comprise pad in the elasticity, pad is close to described housing end face in the described elasticity, shape is consistent with the housing end face, and the outer surface of described housing is provided with installing port screw hole outwardly.

2. the casing of electric vehicle controller with enclosed water-proof structure as claimed in claim 1 is characterized in that: the correspondence position of the outer surface screw hole of pad and end cap and integral housing is provided with screw hole in the described elasticity.

3. the casing of electric vehicle controller with enclosed water-proof structure as claimed in claim 1 is characterized in that: described end cap is that metal material is made.

4. the casing of electric vehicle controller with enclosed water-proof structure as claimed in claim 1 is characterized in that: pad is made for expanded material in the described elasticity.

5. the casing of electric vehicle controller with enclosed water-proof structure as claimed in claim 4 is characterized in that: described expanded material is one or more in PORON material, CR material, EVA material, PE material, PU material, EPE material, PP material, XPE material, SBR material, EPDM material, PVC material, NBR material, IXPE material, AEPA material, NEPORNE material, the SEBS material.

6. the casing of electric vehicle controller with enclosed water-proof structure as claimed in claim 4 is characterized in that: described expanded material is preferably a kind of in EVA material, the EPDM material or two kinds.