CN103775789A

CN103775789A - Housing with two housing parts made of plastic

Info

Publication number: CN103775789A
Application number: CN201310756897.6A
Authority: CN
Inventors: E·德夫勒; H·奥尔因哈默
Original assignee: Alfmeier Praezision AG Baugruppen und Systemlosungen
Current assignee: Alfmeier Praezision SE
Priority date: 2012-10-02
Filing date: 2013-09-30
Publication date: 2014-05-07
Anticipated expiration: 2033-09-30
Also published as: CN103775789B; US20140093406A1; DE102012218012A1

Abstract

The invention refers to a housing (1) with a housing axis (8) and two housing parts (2, 3) made of plastic, and with a joint extending between them transversally to the housing axis, in which case the housing parts (2, 3) are braced against one another with the help of at least one connecting element (7) made of plastic firmly bonded to the housing parts (2, 3), with a force (F) acting along the housing axis (3) of the housing (1).

Description

There is the housing of two housing parts that are made of plastics

Technical field

The present invention relates to a kind of housing, there are two housing parts that are made of plastics, described housing parts utilization along housing axis or with it the power of parallel action clamp toward each other.Force direction or housing axis extend transverse to the boundary seam existing between housing parts or separating surface at this.Housing parts or directly recline each other, or clamp and have member, for example other housing parts and Sealing between housing parts.Need to be with respect to the clamping that requires described type surrounding environment sealing at the inner chamber being surrounded by housing parts, this is for example the in the situation that of pump case.

Background technique

Mostly clamp housing parts with bolt.But in the time that temperature conditions changes, for example, as the situation in automobile making, the extremely different thermal expansion of metal and plastics is problematic.Plastics are if the thermal expansion coefficient of POM or HDPE is than the large several times of metallic material.This point causes because plastic materials in the time that temperature raises extends along the relative length of bolt axial direction, and the material area that housing parts is loaded by bolt head or nut bears the prestressed load of bolt that exceeds defined.There is flowing of plastic materials, the namely depression phenomenon in described material area at this.If housing and then cooling, housing parts no longer compresses toward each other with the power of regulation so, to such an extent as to no longer guarantee to connect reliably and therefore phase time in the sealing of surrounding environment.

Summary of the invention

Set out thus, the object of the invention is to, the housing of propose-kind of the described type of beginning and a kind of for the method for this housing is installed, they are being offered help aspect described problem.

Aspect housing, described object is achieved according to claim 1.Accordingly two of a housing housing parts formed by plastics by least one, clamp toward each other along the power of the housing axis effect of housing with the sealed company being connected of housing parts material those part utilizations, between described housing parts, there is a seam of the boundary transverse to housing Axis Extension.

In the installation method by described in claim 15, described object is achieved thus, be that housing parts is placed in other member situations and is pressed against each other in the situation that applying clamping force by clamp device in centre if desired, wherein, described at least one link and-material between individual housing parts is sealed to be realized during being connected to the power of applying.

For safety clamp required power in fact only take housing parts and the elastic reset power that is clamped in if desired member be therebetween basis, this reposition force is the result of the resiliently deformable of previously having implemented by clamp device of the material of the described parts that are preferably at least partly made up of plastic materials.Because for the plastics of manufacturing housing parts consideration have closely similar thermal expansion coefficient, so only change with insignificant degree at housing parts and other intensity being connected being arranged between member therebetween.The depression phenomenon that reduces the clamping force of the impact connection of join strength or single or these links is eliminated.This point is in the case of housing parts and link are made up of the plastics respectively with identical thermal expansion coefficient.At this, can be a kind of and with-kind or different plastics.

Aspect the sealed load that is connected to the material depression that causes connection part of the material between described at least one link and housing parts unkindly particularly when as in-kind of particularly preferred embodiment, link and housing parts being welded to each other, preferably adopt laser bonding to interconnect.

Described at least one link can be configured to independent parts, wherein, then need with two housing parts in the welding of each housing parts.If link with its-end and-individual housing parts integrated connection, can avoid twice welding.In addition reduced in this manner, the quantity of required parts.

-kind particularly advantageous embodiment the regulation of tool aspect mounting technique, described at least one link and a housing parts form like this, so that they not yet with under the sealed pre-installation state being connected of link material utilize the sealed mutual maintenance of shape at housing parts.Housing and if desired sandwich-type are arranged on the member so degree installation in this manner between housing parts, so that the equal position of all constituents of housing accurately that, this aligning, thereby can for example in the time being transported to clamp device above-mentioned, operate without any problems and except the compaction process in clamp device, no longer need other operation.By the sealed such formation of shape, so that it is against direction of engagement, that direction that while namely installation, housing parts engages is invalid, and housing parts and the member being arranged on if desired therebetween can compress and then interconnect under direction of engagement clamps with described at least one link along direction of engagement is common.

Housing parts and the joint that is easy to manufacture that may be arranged on member therebetween can reach according to simple especially mode, and connecting and composing between described at least one link and-individual housing parts is connected for seizing type.The possibility of opening up at this is to make the parts that will connect with close to each other along the direction of engagement of housing Axis Extension, until seizing type is connected to the single part joint that becomes effectively and make thus housing in the situation that formation shape is sealed.

For link not being stretched out from the outside of housing and for example producing and disturb housing being arranged on while packing in space, there is dimple in the outside of-individual housing parts, this dimple is at least part of, preferably itself holds the section of the overlap joint housing parts of link completely.For reaching the latter, the degree of depth of dimple is equal to or greater than the thickness of overlap joint section.

In-kind of particularly preferred embodiment, exist multiple on the circumference of housing parts the link of partition distance, wherein, these links are preferably configured to arm, these arms are with a housing parts integrated connection in its one end and two housing parts.Shape above-mentioned is locked together under pre-installation state can be according to plain mode by the-individual free end that is molded into an arm, namely not with housing parts integrated connection-end on transverse to its vertical crossbeam stretching.

Accompanying drawing explanation

By accompanying drawing, the present invention is described in detail below.Wherein:

Fig. 1 illustrates the diagrammatic side view that is clamped to the housing in hold down gag,

Fig. 2 illustrates the side view that has flange and be connected to the pump of the motor on pump case,

Fig. 3 illustrates the perspective exploded view that the part of the pump of Fig. 2 is cut open.

Embodiment

The housing 1 of integral form is shown at Fig. 1.This housing comprises two housing parts, i.e. first housing parts 2 and second housing parts 3.Two housing parts have the contour shape of general square shape.Housing parts is configured to discoidal substantially.Their its corresponding moulding independently have surface of contact 4,5.In-kind of simple mode of execution, surface of contact 4,5 (not shown) that directly mutually reclines.But in the embodiment shown in fig. 1, between first and

second housing parts

2,3, other members 6a, b, c are set.

Housing parts

2,3 by multiple, be to utilize along the power F of housing axis 8 directive effects and clamp toward each other by four links 7 in this example, member 6a-6c is clamped or be pressed between

housing parts

2,3 thus.Force direction and housing axis 8 extend transverse to the surface of

contact

4,5 of

housing parts

2,3.

In the example of Fig. 1, on the first housing parts 2, there are four links 7 along its circumferencial direction partition distance.These links are not to be here configured to independent parts, but with the first housing parts 2 integrated connections.Link 7 is the arms 9 that form with metal tape or connecting sheet form.Their edges are integrally formed in regularly on the first housing parts 2 and are parallel to housing axis 8 and extend.They overlap the second housing parts 3 with overlap 10 in the outside 13 of the second housing parts.Overlap 10 is connected in locking manner with the second housing parts 3 materials, namely connects by laser bonding.For carrying out this welding, at least overlap 10 of the first housing parts 2 or arm 9 can be by laser penetration.The region that at least one overlapped district 10 of the second housing parts 3 or the second housing parts 3 overlaps is made up of the plastic materials of absorbing laser.This plastic materials can for example contain the carbon black pellet of embedding.By time overlap 10 apply laser beam, make material under it fusing of the second housing parts 3, thus those positions of company that produce for example point-like between arm 9 and the second housing parts 3.

For holder housing 1, by a clamp device 15, two

housing parts

2,3 are applied along the power of housing axis 8 directive effects.Clamp device for example comprises-individual along the housing axis movable drift 16 of 8 direction and-individual fixing underframe 17, wherein, two

housing parts

2,3 are arranged between drift and underframe.By drift feeding, the first housing parts 2 of supporting arm 9 or link 7 presses to each other housing parts 3 together with member 6a-6c.At this, make

housing parts

2,3 and member 6a-6c resiliently deformable or compression along the direction of housing axis 8.Then during applying the power F predetermining, between the overlap 10 of arm 9 and the second housing parts 3, produce sealed being connected of material.Need only the material cooled melting at connection part 14 and solidify, taking out housing 1 with regard to travelling backwards drift 16 and from clamp device 15.

Housing parts

2,3 and member 6a-6c be because the resiliently deformable producing by drift 16 causes elastic reset power, this reposition force along the directive effect of housing axis 8 and be imported into link 7 or arm 9 in.

The member 6c being arranged between

housing parts

2,3 can be the flexible sheet 19 as being made up of rubber type of material, and this diaphragm is clamped between two

member

6a, 6b.

A kind of diaphragm pump, for example pneumatic pump at the pump shown in Fig. 2 and 3.As also in the above in described embodiment, the housing 1a of pump also have first housing parts 2 and-individual the second housing parts 3.Motor 24 flange are connected on the bottom surface 23 that the second housing parts 3 extends transverse to housing axis 8.The first housing parts 2 that air inlet adapter 15 is set on it comprises link 7 or the arm 9 of the circumferencial direction partition distance along housing parts 2a of four global formations equally.

The overlap 10 that arm 9 overlaps the second housing parts 3 with it in outside 13 is respectively in a dimple 26 in outside 13.The thickness 27 of arm 9 or overlap is equivalent to the degree of depth 28 of dimple, thereby overlap 10 does not stretch out or is contained in completely wherein from the outside 13 of the second housing parts 3.

Between the free end 29 of arm 9 and the second housing parts 3, form a kind of sealed against the effective shape of direction of engagement 35.This shape is sealed, and to be not limited in the housing 1a of Fig. 2 and 3 upper, but may reside in arbitrarily in hull shape, also may reside in the hull shape of Fig. 1.Described shape is locked together under pre-installation state effectively, and wherein

housing parts

2,3 not yet interconnects by least one link 7, and therefore under the example case of Fig. 2 and 3, arm 9 is not yet with second housing parts 3 materials are sealed enters to connect.Shape is sealed to be formed generally like this, so that free end 29 or arm 9 have and rabbet part 30 below, describedly rabbets part and corresponding surface 33 actings in conjunction of the first housing parts 2 dorsad below.The first housing parts 2 and the middle member 6 of placing therefore can not be from the second housing parts 3 along arrow 34 direction, namely leave the second housing parts 3 against direction of engagement 35.On the contrary, along direction of engagement 35, namely, in the time of the single constituent element of assemble case, shape is sealed invalid.Therefore in the time of the interior pressing

housing parts

2,3 of clamp device 15 and member 6, arm 9 can move along direction of engagement 35 with respect to second component 3, does not therefore hinder the axial pressing of housing constituent element.Can find out under the final installment state of Fig. 2 this this point, rabbet in the back and between part 30 and corresponding surface 33, have a gap or axial distance 36.In the instantiation of the diaphragm pump shown in Fig. 2 and 3, sealed for forming shape at free end 29, crossbeam 37 be molded into two opposed arms 9 ' on.Its side direction exceed arm 9 ', the upper prismatic that points to the first housing parts 2 becomes below to rabbet part 30.Dimple 26 is configured to and crossbeam 37 complementations.It has transverse to housing axis 8 extends region 38 expansion, that hold crossbeam 37.In this region, dimple 26 has the wall 39 extending transverse to housing axis 8 or along the circumferencial direction of the second housing parts, and this wall forms and rabbets the coefficient corresponding surface 33 of part 30 below.Alleged housing axis 8 is parallel to generally direction of engagement 35 and extends.

The diaphragm pump of talking about, except two

housing parts

2,3, also comprises the member 6d to 6g being arranged on therebetween.Member 6d is the housing parts of a tank shape, and this housing parts holds the member 6e that forms pump diaphragm 39.Pump diaphragm 39 comprises four pump chambers 40 of total, and these pump chambers stretch out from member 6d with bolt head 43 at downside.Bolt head 43 is for operate pump diaphragm, namely for expanding in the time sucking and carry air and dwindling pump chamber 40.Pump diaphragm 39 has edge protuberance portion 35, and it is clamped between the member 6f of member 6d and discoid formation.Last member 6g is-individual valve film that it is clamped between the first housing parts 2 and member 6f and comprises the valve member (not shown) freely cutting of controlling valve opening.

Claims

1. housing (1), have-bar housing axis (8) and two housing parts that are made of plastics (2,3), between housing parts, there is a seam of the boundary transverse to housing Axis Extension, wherein, described housing parts (2,3) power (F) that be made up of plastics by least one, that act on along the housing axis (8) of housing (1) with housing parts (2,3) the sealed links that are connected of material (7) utilization clamps toward each other.

2. by housing claimed in claim 1, it is characterized in that, described housing parts (2,3) and link (7) are made up of the plastics respectively with identical thermal expansion coefficient.

3. by the housing described in claim 1 or 2, it is characterized in that described at least one link (7) and a housing parts (3) welding.

4. by housing claimed in claim 3, it is characterized in that, adopt laser bonding.

5. by the described housing of one of aforementioned claim, it is characterized in that at least described-individual link (7) and a housing parts (2) integrated connection.

6. by the described housing of one of aforementioned claim, it is characterized in that, described at least one link (7) and a housing parts (3) form like this, so that they not yet with under the sealed pre-installation state being connected of link (7) material utilize the sealed mutual maintenance of shape at housing parts (2,3).

7. by housing claimed in claim 6, it is characterized in that, be that seizing type is connected between described at least one link (7) and housing parts (2,3).

8. by the described housing of one of aforementioned claim, it is special and be, there is a dimple (26) in the outside (13) at-individual housing parts (3), this dimple itself holds the overlap in lateral overlap housing parts (3) (10) of described at least one link (7) at least partly.

9. by housing claimed in claim 8, it is characterized in that, the degree of depth (28) of described dimple (26) is equal to or greater than the thickness (27) of overlap (10).

10. by the described housing of one of aforementioned claim, it is characterized in that, between described housing parts (2,3), clamp and have other members (6).

11. by the described housing of one of aforementioned claim, it is characterized in that, described housing has the link (7) of multiple circumferencial direction partition distance along housing parts (2,3).

12. by the housing described in claim 11, it is characterized in that, described link (7) be configured to along housing axis (8) direction extend arm (9), these arms with its-end with two housing parts (2,3) in a housing parts (2) integrated connection.

13. by the housing described in claim 12, it is characterized in that, vertical crossbeam stretching (37) transverse to an arm be molded into this arm (9) another-end on, on the free end of this arm (29).

14. by the described housing of one of aforementioned claim, it is characterized in that, described housing is pump case.

15. for installing by the method for the housing one of aforementioned claim Suo Shu (1), it is characterized in that, described housing parts (2,3) is placed in other members (6) situation and is pressed against each other in the situation that applying clamping force (F) by clamp device (15) in centre if desired, wherein, realize during being connected to the power of applying the material between described at least one link (7) and a housing parts is sealed.

16. by the method described in claim 15, it is characterized in that, described housing parts (2,3) interfixes so that shape is sealed in Preinstallation Steps, and wherein, engaged direction of engagement (35) that shape is sealed while installing against housing parts (2,3) is invalid.