CN201937997U - Double-layer injection molded casing - Google Patents
Double-layer injection molded casing Download PDFInfo
- Publication number
- CN201937997U CN201937997U CN2011200388216U CN201120038821U CN201937997U CN 201937997 U CN201937997 U CN 201937997U CN 2011200388216 U CN2011200388216 U CN 2011200388216U CN 201120038821 U CN201120038821 U CN 201120038821U CN 201937997 U CN201937997 U CN 201937997U
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- Prior art keywords
- internal layer
- double injection
- injection housing
- screw post
- double
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Abstract
The utility model provides a double-layer injection molded casing, which belongs to the technical field of injection molding and solves the problem that the existing double-layer injection molded casing is complex in fabricating technology and low in production efficiency. The double-layer injection molded casing comprises an outer layer and an inner layer which are connected, and the inner side of the inner layer is in a positioning structure integrated with the inner layer. The double-layer injection molded casing can be used as an outer casing for electric equipment.
Description
Technical field
The utility model relates to the injection molding technology field, relates in particular to a kind of double injection housing that is used for electric equipment.
Background technology
The double injection housing is a kind of of multi component injection molding (Multi-Component Inject) housing, and it has been used as the shell of various electric equipments widely.As shown in Figure 1, the double injection housing comprises continuous skin 1 and internal layer 2, constitutes outer 1 component different usually with the component that constitutes internal layer 2 (certainly, skin 1 or internal layer 2 also can be made of multiple different component) itself.Because the skin 1 of double injection housing, the component of internal layer 2 can be different, so housing diverse location place can demonstrate different character to realize multiple function.For example, if the color different (being the double-shot moulding housing) of skin 1 and internal layer 2 components, then housing can just present different colours in appearance under not dyed situation.For another example, the housing of electric equipment is inboard to be contacted with electric elements, and the outside contacts with external environment condition, so it promptly will have good insulation performance, anti-flammability, good resistance to soiling, resistance to wear are arranged again, and such material cost is very high; But if use the double injection housing, as long as housing internal layer 2 is selected the component of insulating properties, good flame resistance for use, and outer 1 select resistance to soiling, component that resistance to wear is good for use, just can satisfy electric equipment to the housing performance demands, thereby reduce cost.
The double injection housing adopts repeatedly Shooting Technique (this sentences twice Shooting Technique is example) manufacturing usually: at first inject outer 1; Before outer 1 full solidification, change the half module (still stay on the half module in its outside this moment outer 1) of outer 1 inboard, injection moulding obtains internal layer 2 once more, and is in the injection moulding of internal layer 2, actual in outer 1 part as die cavity; The demoulding, skin 1 and internal layer 2 combine automatically.
The injection-moulded housing inboard need be provided with the location structure 3 that is made of screw post 31 and structure muscle 32 etc., being used to locate the components and parts (for example circuit board, electric elements etc.) that are contained in the injection-moulded housing, or is used for two housing sections involutory.And in the prior art, it is believed that, so can cause problems such as appearance shrink, location structure 3 demoulding difficulties if go out location structure 3 at internal layer 2 inboard directly integrated injection moldings because the double injection housing adopts repeatedly Shooting Technique manufacturing.For this reason, in the existing double injection housing, location structure 3 all is to be bonded on the housing internal layer by special glue, adhesive tape 33 etc. after independent manufacturing (for example injection moulding) becomes an individual components again.
The inventor finds that there are the following problems at least in the prior art: because location structure needs to make separately in the existing double injection housing, and will be bonded on the housing internal layer with special adhesive tape or glue, therefore cause its complicated process of preparation, production efficiency is low.
The utility model content
Embodiment of the present utility model provides a kind of double injection housing, and its preparation technology is simple, the production efficiency height.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of double injection housing, it comprises continuous skin and internal layer, the inboard of described internal layer has and the integrated location structure of described internal layer.
The double injection housing of embodiment of the present utility model has overcome prejudice of the prior art, and location structure is one-body molded not to be needed to be made separately and bond in the internal layer inboard, so its preparation technology is simple, the production efficiency height.
As a kind of preferred version of embodiment of the present utility model, in the position that described skin links to each other with internal layer, the ratio of described outer layer thickness and interior layer thickness is between 0.85 to 1.
As a kind of preferred version of embodiment of the present utility model, described location structure comprises structure muscle and/or screw post.
As a kind of preferred version of embodiment of the present utility model, described location structure comprises the structure muscle, and the ratio that wherein has the height of a described structure muscle and its width at least is smaller or equal to 10.
As a kind of preferred version of embodiment of the present utility model, described location structure comprises the structure muscle, wherein has at least a described structure muscle to have recess in its side away from described internal layer.
As a kind of preferred version of embodiment of the present utility model, described location structure comprises the screw post, and the ratio that wherein has the height of a described screw post and its external diameter at least is smaller or equal to 3.
As a kind of preferred version of embodiment of the present utility model, described location structure comprises the screw post, wherein has at least a described screw post to link to each other with described internal layer by the carriage of hollow.
As a kind of preferred version of embodiment of the present utility model, described double injection housing is the bicomponent injection molding housing, and each is made of its skin and internal layer a kind of component, and it is different with the component that constitutes described internal layer to constitute described outer field component.
As a kind of preferred version of embodiment of the present utility model, described double injection housing is an electrical equipment shell.
As a kind of preferred version of embodiment of the present utility model, described double injection housing is front shell of television or display front-housing.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the cross-sectional view of existing double injection housing;
Fig. 2 is the cross-sectional view of the double injection housing of the utility model embodiment;
Fig. 3 is a kind of structural representation of structure muscle of the double injection housing of the utility model embodiment;
Fig. 4 is a kind of structural representation of screw post of the double injection housing of the utility model embodiment;
Fig. 5 is the structural representation of the double injection housing of another embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme of the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, all other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belong to the scope that the utility model is protected.
The utility model embodiment provides a kind of double injection housing, and it comprises continuous skin and internal layer, and the inboard of described internal layer has and the integrated location structure of described internal layer.
The double injection housing of embodiment of the present utility model has overcome prejudice of the prior art, and location structure is one-body molded not to be needed to be made separately and bond in the internal layer inboard, so its preparation technology is simple, the production efficiency height.
And, because common double injection housing internal layer is the lower materials of surface energy such as PC, ABS+PMMA, be not easy to bond, thus the fastness of silane coupling agent also will be used with the raising bonding, but silane coupling agent may cause separating of outer and internal layer.And the double injection housing of present embodiment need not use silane coupling agent, thereby has avoided outer problem of separating with internal layer.
In addition, owing to will use adhesive tape or glue bonding location structure, cost (cost of especially extraordinary adhesive tape) is high, bonding process easily causes product rejection, glue contaminated environment so existing double injection housing also exists, be difficult to recycle shortcomings such as (because rubber belt material can't reclaim with housing), and the double injection housing of present embodiment has then been avoided these problems.
Embodiment
As shown in Figure 2, the utility model embodiment provides a kind of double injection housing, and it comprises continuous skin 1 and internal layer 2, and this skin 1 preferably is made of different components with internal layer 2.Wherein, the component of skin 1 and internal layer 2 can be the conventional material in PC (Merlon) material, ABS (acrylonitrile-styrene-butadiene copolymer)+injection-moulded housings such as PMMA (polymethyl methacrylate) alloy material.
Wherein, also have in the inboard of internal layer 2 and internal layer 2 integrated location structures 3; That is to say that this location structure 3 forms in an injection moulding with internal layer 2, and by constituting with a kind of component.Because location structure 3 is one-body molded with internal layer 2, the two directly connects together, so does not need in the double injection housing of present embodiment to make separately and the bonding location structure, so its preparation technology is simple, and the production efficiency height.
Preferably, this double injection housing is the bicomponent injection molding housing, and its skin 1 and internal layer 2 respectively are made of a kind of component, and the component of formation internal layer 2 is different with the component that constitutes outer 1.For example, constitute outer 1 and internal layer 2 can be the different component of color, thereby the double injection housing be the double-shot moulding housing of routine.
Preferably, the double injection housing is the shell of electric equipment products, more preferably front shell of television or display front-housing.Certainly, this double injection housing also can be phone housing, panel computer shell, shell etc.
Preferably, at outer 1 position that links to each other with internal layer 2, outer layer thickness D
1With interior layer thickness D
2Ratio 0.85～1.Wherein, " outer 1 position that links to each other with internal layer 2 " is meant in this position, on the thickness of shell direction to have skin 1 and internal layer 2 simultaneously, has only outer 1 part of not having internal layer 2 then to be not included in wherein among similar Fig. 5; And " outer layer thickness D
1With interior layer thickness D
2" be meant outer 1, internal layer 2 thickness D respectively as the main part of layer structure
1, D
2, that is to say this thickness D
1, D
2The thickness D of skin 1 in the time of should being the additional structure of not considering to be located on outer 1, the internal layer 2, internal layer 2 itself
1, D
2Wherein additional structure includes but not limited to: be used to prevent the structure 18,28 of skin 1 and 2 lateral slidings of internal layer, be used for the structure 19,29 of edge booster action, above-mentioned location structure 3 etc.
The inventor is keeping under the constant situation of double injection housing integral thickness, if with outer layer thickness D through a large amount of discovering
1With interior layer thickness D
2Ratio remain in above-mentioned 0.85～1 the scope, then can avoid well in injection moulding process, producing problems such as appearance shrink, location structure demoulding difficulty, thereby can produce the second best in quality double injection housing reliably by existing conventional technology.
Preferably, location structure 3 comprises structure muscle 32 and/or screw post 31.Wherein, structure muscle 32 is mainly used in and blocks other components and parts that are located in the double injection housing, as circuit board etc.; Simultaneously, structure muscle 32 also can be connected the sidepiece of screw post 31 so that screw post 31 is played certain supporting role.Then can be screwed into screw in the screw post 31, thereby by components and parts such as screw circuit board, or double injection housing and other housing is involutory.In a double injection housing, preferably have a plurality of structure muscle 32 and screw post 31, its quantity, position etc. can specifically be set according to the demand of housing.Obviously, in the housing of reality, generally include a large amount of structure muscle 32 and screw post 31, but, in each accompanying drawing, only show a small amount of structure muscle 32 and screw post 31 for easy.
Preferably, have one in the structure muscle 32 at least and satisfy following size relationship: structure muscle height (being the distance between internal layer 2 farthest and internal layer 2 inner surfaces on the structure muscle 32) h
32With its width (being the size of structure muscle 32 on vertical with its length direction but parallel direction) D with internal layer 2 inner surfaces
32Ratio smaller or equal to 10; Structure muscle width D wherein
32Can be smaller or equal to 1.2mm.The inventor finds, is satisfying under the condition of above-mentioned size relationship, can guarantee structure muscle 32 easy demoulding in injection moulding process better, does not produce surface quality problems.
Preferably, have a structure muscle 32 at least as shown in Figure 3, having at least one recess 321 on its side away from internal layer 2 (is example with a recess 321 among the figure, but be to be understood that, if muscle length is bigger, also can have a plurality of recesses on it), the concrete shape of this recess 321 is without limits.The structure muscle 32 of this form can guarantee structure muscle height h
32Reduce the lateral area of structure muscle 32 under the constant situation, thereby make the 32 easier demouldings of structure muscle.
Obviously, as preferred mode, any one the structure muscle 32 in the double injection housing all should satisfy a kind of (also can satisfy simultaneously certainly) in above-mentioned two kinds of structure muscle 32 forms, to guarantee all structure muscle 32 demouldings smoothly.Particularly, can make structure muscle 32 satisfy above-mentioned dimension scale relation in design earlier as far as possible, and in the time can't satisfying above-mentioned dimension scale and concern (such as structure muscle height h
32Must reach particular value), then use above-mentioned recess 321 structures.
Preferably, in screw post 31, have one at least and satisfy following size relationship: screw post height (being the distance between internal layer 2 farthest and internal layer 2 inner surfaces on the screw post 31) h
31With its outer diameter D
312Ratio smaller or equal to 3; Screw post jamb thick (referring to be positioned at the thickness of the one-sided wall of screw) D wherein
311Can be at 1.5～1.8mm.The inventor finds, is satisfying under the condition of above-mentioned size relationship, can guarantee screw post 31 easy demoulding in injection moulding process better, does not produce surface quality problems.
Preferably, have a screw post 31 at least as shown in Figure 4, the carriage 313 by hollow links to each other with internal layer 2.This carriage 313 can be hollow cube, and the cube bottom surface connects internal layer 2, end face attachment screw post 31 bottoms, and this cubical side is removed; Certainly, carriage 313 also can adopt other known form.In this structure, because screw post 31 " below is unsettled ", so it can not cause surface quality problems such as appearance shrink during injection moulding; Simultaneously, the physical length of screw post 31 bodies has been shortened in this design, makes its easy demoulding.The screw post 31 of this " hanging type " can be realized by known oblique top injection mold (claiming rake tip injection mold again) technology, therefore its concrete structure do not done more descriptions at this.
Obviously, as preferred mode, any one the screw post 31 in the double injection housing all should satisfy a kind of (also can satisfy simultaneously certainly) in above-mentioned two kinds of screw post 31 forms, to guarantee all screw post 31 demouldings smoothly.Particularly, can make screw post 31 satisfy above-mentioned dimension scale relation in design earlier as far as possible, and in the time can't satisfying above-mentioned dimension scale and concern (such as screw post height h
32Must reach particular value), then use the screw post 31 of above-mentioned " hanging type ".
Obviously, the double injection housing of present embodiment also can carry out many known variations.For example: can be as shown in Figure 5, housing has a big skin 1, and is connected with a plurality of independently little internal layers 2 on outer 1, and integrated location structure 3 is arranged at least one internal layer 2 therein, wherein each internal layer 2 can be made of identical component, also can be made of different components; Certainly, the double injection housing also can have a big internal layer 2, and is connected with a plurality of little skins 1 on the internal layer 2; Perhaps, also can comprise the keeper that other is conventional in the location structure.
Above-mentioned double injection housing can be by repeatedly Shooting Technique preparation, and wherein location structure 3 is one-body molded in an injection moulding with internal layer 2.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (10)
1. a double injection housing comprises continuous skin and internal layer, it is characterized in that, the inboard of described internal layer has and the integrated location structure of described internal layer.
2. double injection housing according to claim 1 is characterized in that, in the position that described skin links to each other with internal layer, the ratio of described outer layer thickness and interior layer thickness is between 0.85 to 1.
3. double injection housing according to claim 1 and 2 is characterized in that, described location structure comprises structure muscle and/or screw post.
4. double injection housing according to claim 3 is characterized in that described location structure comprises the structure muscle, and the ratio that wherein has the height of a described structure muscle and its width at least is smaller or equal to 10.
5. double injection housing according to claim 3 is characterized in that described location structure comprises the structure muscle, wherein has at least a described structure muscle to have recess in its side away from described internal layer.
6. double injection housing according to claim 3 is characterized in that described location structure comprises the screw post, and the ratio that wherein has the height of a described screw post and its external diameter at least is smaller or equal to 3.
7. double injection housing according to claim 3 is characterized in that described location structure comprises the screw post, wherein has at least a described screw post to link to each other with described internal layer by the carriage of hollow.
8. double injection housing according to claim 1 and 2 is characterized in that, described double injection housing is the bicomponent injection molding housing, and each is made of its skin and internal layer a kind of component, and it is different with the component that constitutes described internal layer to constitute described outer field component.
9. double injection housing according to claim 1 and 2 is characterized in that, described double injection housing is an electrical equipment shell.
10. double injection housing according to claim 1 and 2 is characterized in that, described double injection housing is front shell of television or display front-housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388216U CN201937997U (en) | 2011-02-15 | 2011-02-15 | Double-layer injection molded casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388216U CN201937997U (en) | 2011-02-15 | 2011-02-15 | Double-layer injection molded casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937997U true CN201937997U (en) | 2011-08-17 |
Family
ID=44449498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200388216U Expired - Fee Related CN201937997U (en) | 2011-02-15 | 2011-02-15 | Double-layer injection molded casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937997U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638949A (en) * | 2011-02-15 | 2012-08-15 | 青岛海信电器股份有限公司 | Double-layer injection molding shell and preparation method thereof |
| CN102711003A (en) * | 2012-01-05 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Loudspeaker, loudspeaker casing and manufacturing method of loudspeaker casing |
| CN106657506A (en) * | 2017-03-10 | 2017-05-10 | 上海传英信息技术有限公司 | Metal-plastic double-layer mobile phone shell and manufacturing method thereof |
-
2011
- 2011-02-15 CN CN2011200388216U patent/CN201937997U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638949A (en) * | 2011-02-15 | 2012-08-15 | 青岛海信电器股份有限公司 | Double-layer injection molding shell and preparation method thereof |
| WO2012109943A1 (en) * | 2011-02-15 | 2012-08-23 | 青岛海信信芯科技有限公司 | Double-layer injection moulded casing, method for preparation thereof, and electrical apparatus |
| CN102638949B (en) * | 2011-02-15 | 2016-03-16 | 青岛海信电器股份有限公司 | Double-layer injection molded casing and preparation method thereof |
| US9676129B2 (en) | 2011-02-15 | 2017-06-13 | Hisense Hiview Tech Co., Ltd. | Double-layer injection molding casing and method for manufacturing the same, electronic apparatus |
| CN102711003A (en) * | 2012-01-05 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Loudspeaker, loudspeaker casing and manufacturing method of loudspeaker casing |
| CN102711003B (en) * | 2012-01-05 | 2015-11-11 | 瑞声声学科技(深圳)有限公司 | Loud speaker, loudspeaker housing and preparation method thereof |
| CN106657506A (en) * | 2017-03-10 | 2017-05-10 | 上海传英信息技术有限公司 | Metal-plastic double-layer mobile phone shell and manufacturing method thereof |
| CN106657506B (en) * | 2017-03-10 | 2023-09-22 | 上海传英信息技术有限公司 | Metal-plastic double-layer mobile phone shell and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20190215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |