CN1135348C

CN1135348C - Refrigerator

Info

Publication number: CN1135348C
Application number: CNB971996997A
Authority: CN
Inventors: B・奥斯巴; B·奥斯巴; 磷却锼估; V·奥伊兹达斯拉
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 1996-09-24
Filing date: 1997-08-27
Publication date: 2004-01-21
Anticipated expiration: 2017-08-27
Also published as: WO1998013655A1; TR199900752T2; BR9713216A; DE59703116D1; CN1238037A; EP0935732A1; EP0935732B1; DE29616623U1; ES2157087T3

Abstract

A refrigerator has a housing with an inner plastic lining (13) surrounded by a heat-insulating material (12) and fitted at its outer side facing the heat-insulating material (12) with a reinforcement body (20) embedded in the heat-insulating material (12) for holding components on the inner lining by means of screw-like fastening means (31). The reinforcement body (20) is provided with at least one receiving section (21) that can be form-fitted and/or frictionally connected to a cup-shaped cavity (14) in the inner lining (13). The receiving section (21) is joined to a fastening section (27) with a prefabricated bore (30) into which screw-like self-cutting fastening means (31) can be inserted.

Description

Refrigeration equipment

The present invention relates to a kind of refrigeration equipment that has housing, this housing has one by the cingens plastics internal protective plate of thermoinsulation material, and its outside towards thermoinsulation material of this internal protective plate is provided with one and is embedded in the thermoinsulation material so that be clamped in reinforcer on the internal protective plate by screw-like fastening piece bar structure spare.

In the insulated case of the refrigeration of prior art or refrigeration equipment, if on the side of the internal protective plate of drawing a circle to approve refrigeration or freezing chamber, wanting to connect some forms by screw is that the structural member of pull guide, ventilating fan, wind deflector or vaporizer is fixed on the internal protective plate, will the reinforcer that some are called rearmounted element be set at the housing internal protective plate of plastic shaping on the side of thermoinsulation material.Like this, in first job step, will be on the position of plastic casing internal protective plate fixed structure piece, a through hole that is used for indicating the fixed position is set, in second job step, this through hole or covered by a rearmounted element that is placed on the internal protective plate by friction welding or ultrasonic welding.In this fixing rearmounted Element Technology,, then just may enter into inner chamber from the outside of internal protective plate through said through hole with the processed thermoinsulation material of liquid material if there is mass defect in welding process.In consumer goods industries, in the batch process of under huge cost pressure, being carried out, though as much as possible avoided such defective, not fully with its elimination.In addition, said two kinds of welding methods also exist following technologic particular disadvantage, be that the used equipment of said ultrasonic welding method itself is very expensive, then there are some problems in the very cheap friction welding method of itself price, because in the deep-draw process of plastics internal protective plate, the wall thickness of this plastics internal protective plate on its fixed position quite approaches but eliminates fully, and such wall thickness almost can not use this welding method to fix said rearmounted element.

Task of the present invention is to propose a kind of locking method of stiffening element of the refrigeration equipment that is used to have housing, and this locking method can be avoided the shortcoming of prior art by simple structural design measure.

According to the present invention, this task is finished like this, be said reinforcer be provided with at least one can be stressed rationally and/or shape reasonably be placed in clamp segment in the cup-shaped moulding district of internal protective plate, a holding part links to each other with this clamp segment, and said holding part has one to be used for the pre-manufactured hole that the screw-like fastening piece enters from cutting.

Concerning the reinforcer that is called rearmounted element, solution of the present invention has realized the possible fastening means in a kind of production in enormous quantities that is suitable for equally in consumer goods industries, the characteristics of this mode are the Location accuracy height, be characterized under certain condition cup-shaped moulding district on internal protective plate by the moulding of pull and stretch technology.Said cup-shaped, as the moulding district of the location secondary surface of reinforcer, make on internal protective plate, be used for to reinforcer position the through hole of finding accurately become unnecessary, like this, in the mounting point of reinforcer, just avoided reliably entering into refrigeration or the freezing chamber of being drawn a circle to approve by internal protective plate with the thermoinsulation material that liquid material is introduced.In addition, like this reinforcer is carried out in the fastening solution, say that in principle having eliminated quality subsides as much as possible a kind of.In addition, thisly reinforcer is carried out fastening method can realize automation by the most cheap enough manufacturing mechanism, can cancel the manual processing or the following process of the costliness of doing by producers thus.

A kind of preferred form of implementation according to the technology of the present invention theme, be provided with a centering secondary surface at the bottom of its glass of said cup-shaped moulding district, and settle clamp segment on its outer surface to be made into hollow bolt shape, its central axis at least as much as possible with the central axes of the central axis and the centering secondary surface of pre-manufactured hole.

Thus, can guarantee that said screw-like fastening piece can locate in the pre-manufactured hole on the holding part that is inserted into reinforcer reliably, use expensive and time-consuming positioning device to indicate the insertion position of screw-like fastening piece and be not required to be this in simple especially mode.

According to the another kind of preferred form of implementation of the technology of the present invention theme, said hollow bolt is made of elastic tongue piece, and its root of the tongue is arranged on the holding part.

The hollow bolt that is formed by some elasticity monomer segments has such advantage, and promptly when it became big according to the process shifts cross section, it just can overlay in the said cup-shaped moulding district without a doubt.

If another kind of favourable structural arrangements according to the technology of the present invention theme, it is said elastic tongue piece is respectively equipped with a radial arrangement at least on its tip of the tongue stop element, this stop element rests on the internal protective plate, like this, especially in fully artomatic processing, said reinforcer just can very accurately be installed in the cup-shaped moulding district on the correct final position, its location.

If another kind of favourable structural type according to the technology of the present invention theme, be that said holding part is provided with some structure muscle, these structure muscle can shape reasonably match to merge with thermoinsulation material and prevent that reversing from appearring in reinforcer, and like this, the reinforcer that is placed in the moulding district just can not twist.In addition, alleviated also that said reinforcer is connected with the shape in moulding district and/or the burden of stressed connection.

According to the another kind of preferred form of implementation of the technology of the present invention theme, the structure muscle on the said holding part is by radially constituting with respect to rib convex outer surfaces, that stretch along its longitudinal axis on its outer surface.

This formation by holding part, some gap have been formed thereon, be used for holding with liquid material and introduce and with the thermoinsulation material of after-hardening, thus, stressed rationally and/or shape reasonably is fixed in the cup-shaped moulding district except it, said reinforcer is also reasonably being supported by the thermoinsulation material shape in addition, not only on the direction of insertion of screw-like fastening piece but also on the direction opposite with it.

If another kind of favourable structural type according to the technology of the present invention theme, be that said rib is arranged on the total length of holding part and at least approximately engages with the outer surface of clamp segment highly in the same manner, said thus holding part has all obtained very strong support and clamping on the direction of insertion of the fastening piece direction opposite with it in thermoinsulation material.

If another kind of favourable structural type according to the technology of the present invention theme, promptly on the outer surface of holding part, be furnished with four ribs, these ribs make the power that is applied on the thermoinsulation material very suitably with even on the direction of insertion of the fastening piece direction opposite with it approximately with on the circumference that is distributed in holding part that equates thus.

If according to the last a kind of preferred form of implementation of the technology of the present invention theme, be about to said cup-shaped moulding district and reinforcer and all manufacture circular cross section, will make the manufacturing of said cup-shaped moulding district and reinforcer very simple like this.Also obtained the rational solution of a kind of assembling by such structure.

To the present invention be set forth by the embodiment who briefly describes in the accompanying drawings in the following description.Wherein:

Fig. 1 be refrigeration or the insulated case of refrigeration equipment amplification the horizontal sectional drawing of ratio, it has an internal protective plate, on this internal protective plate, installed one be placed in the internal protective plate cup-shaped, the reinforcer in the internal protective plate moulding district of heat insulation layer,

Fig. 2 is the amplification profile of the reinforcer of relative Fig. 1 direction,

Fig. 3 is the planimetric map of the reinforcer of Fig. 2,

Fig. 4 is the sectional drawing of the reinforcer of Fig. 2 along the IV-IV hatching.

The section of shell body wall 10 of the insulated case of unshowned refrigeration or refrigeration equipment has been described in Fig. 1, it have heat insulation layer 12 that an outer casing 11, one form by foaming technology and one to refrigerate or the refrigeration equipment inner chamber covers, by hide being carried out the internal protective plate 13 that the chipless moulding forms.This internal protective plate is provided with that for example form a, cross section and is circular cup-shaped moulding district 14 in its chipless forming process, this cup-shaped moulding district is inserted in the thermoinsulation material 12 and in the centre at the formed cup of its closure wall end 15 has one to be the centering secondary surface 16 of taper substantially.A reinforcer 20 that the so-called rearmounted element of conduct uses has been equipped in said cup-shaped moulding district 14 on the formed outer surface 17 of its closure wall.This reinforcer is made cylindrical substantially and is provided with a hollow bolt shape clamp segment 21, and cross section snaps on the outer surface 17 in cup-shaped moulding district 14 for circular clamping opening 22 on this clamp segment.The clamping opening 22 of the said clamp segment 21 that is shaped as hollow bolt shape is by elastic tongue piece 23 delineations as hollow bolt side wall sections, this elastic tongue piece by be in 90 °, form and respectively have a circle ring sector cross section along hollow bolt outer surface unlimited breach 24 trend, similar rectangular parallelepiped.Said elastic tongue piece 23 is respectively equipped with two stop elements 25 in a certain distance apart from one another, that radially extend at its free end as the tip of the tongue, these stop elements under the assembling condition of reinforcer 20 with its outside, rest on internal protective plate 13 towards on the outside of heat insulation layer 12 and away from the backstop surface of contact 26 of clamp segment 21 with this sign as correct final position, the location in reinforcer 20 assembly processes.Said elastic tongue piece 23 with its root of the tongue be placed in one with holding part 27 that said clamp segment 21 links to each other on (see figure 2), the shape of this holding part be roughly circular hollow cylinder and be provided with on its outer surface some apart same distance, the rib 28 of opposing outer face projection radially, these ribs on the total length of holding part 27, extend basically and with the identical (see figure 3) of outer surface height of clamp segment 21.Said holding part 27 has a near blind hole 30 of stretching to its free end always and extending along its central longitudinal axis 29, the longitudinal axis at its center of process of this blind hole and all overlap with the central longitudinal axis 29 of said holding part 27 through the longitudinal axis at said clamp segment 21 centers.Said blind hole 30 is as from the centering pilot hole that cuts cylinder screw 31, and said cylinder screw is used for a cooling air guide plate 32 and is placed in (see figure 1) on the internal protective plate 13.In order to be fixed on the internal protective plate 13, the cross section that said cooling air guide plate 32 is provided with an indentation is circular fixedly arm 33, should be fixedly the arm pipeline section 34 that reduces of arm upper curtate cross section be placed in and be used in the cup-shaped moulding district 14 32 channeling conducts of cooling air guide plate and assembling supporting, and be somebody's turn to do fixing arm and have the through hole 35 that an external diameter with fastening screw trip bolt 31 adapts.Having the arm pipeline section 36 that is serially connected with the relative increase of its cross section on the arm pipeline section 34 of through hole 35, this arm pipeline section is provided with a receiving hole 37, under the tightening state of said cooling air guide plate 32, the screw head of fastening screw trip bolt 31 is arranged in this receiving hole, and this receiving hole can cover with a lid at its end away from arm pipeline section 34.In order to improve its stability, said fixedly arm 33 is provided with the supporting rib 39 of long arm pipeline section 34 of some and its short arm pipeline section 36 overlap joints and arrival always at its outer surface, and these supporting ribs are arranged with 90 ° of angle intervals that are equal to each other.

Said reinforcer 20 is integrally formed by the plastics die castings in the present embodiment, and at this, the blind hole 30 of moulding has just formed in press casting procedure already in its holding part 27.The situation that is different from present embodiment can also be, some are set along its lengthways of rod that axially stretches on the outer surface 17 in cup-shaped moulding district 14, these ribs can shape reasonably with on being located at clamp segment 21 cooperate as the unlimited breach 24 of clamping slot, thus, except stressed rational clamping, on the direction of insertion of fastening screw trip bolt 31 direction opposite with it, said reinforcer 20 is also reversed stably to be placed in the said cup-shaped moulding district 14.

Equally, can also imagine, with shown in and described embodiment opposite, said reinforcer 20 can be made of a plurality of reinforcers 20, each of these reinforcers can overlay in the corresponding cup-shaped moulding district 14 that arranges, so, this reinforcer stably has been clamped on the said internal protective plate 13 just there not being under the situation of addition thereto already on the direction of insertion of fastening screw trip bolt 31 direction opposite with it quilt be reversed.

Claims

1. refrigeration equipment that has housing, this housing has one by the cingens plastics internal protective plate of thermoinsulation material, its outside towards thermoinsulation material of this internal protective plate is provided with one and is embedded in the thermoinsulation material so that be clamped in reinforcer on the internal protective plate by screw-like fastening piece bar structure spare, it is characterized in that: said reinforcer (20) be provided with at least one can be stressed rationally and/or shape reasonably be placed in clamp segment (21) in the cup-shaped moulding district (14) of internal protective plate (13), a holding part (27) links to each other with this clamp segment, and said holding part has one to be used for screw-like fastening piece (31) and to cut the pre-manufactured hole (30) that enters certainly.

2. according to the refrigeration equipment of claim 1, it is characterized in that: (15) are provided with a centering secondary surface (16) at the bottom of its glass of said cup-shaped moulding district (14), and the clamp segment (21) that is placed on its outer surface (17) is made into hollow bolt shape, its central axis at least as much as possible with the central axes of the central axis of pre-manufactured hole (30) and centering secondary surface (16).

3. according to the refrigeration equipment of claim 2, it is characterized in that: said hollow bolt is made of elastic tongue piece (23), and its root of the tongue is arranged on the holding part (27).

4. according to the refrigeration equipment of claim 3, it is characterized in that: said elastic tongue piece (23) is respectively equipped with the stop element (25) of a radial arrangement at least on its tip of the tongue, this stop element rests on the internal protective plate (13).

5. according to the refrigeration equipment of claim 1, it is characterized in that: said holding part (27) is provided with some structure muscle, and these structure muscle can shape reasonably match to merge with thermoinsulation material (12) and prevent that reversing from appearring in reinforcer (20).

6. according to the refrigeration equipment of claim 5, it is characterized in that: the structure muscle on the said holding part (27) is by radially constituting with respect to rib (28) convex outer surfaces, that stretch along its longitudinal axis (29) on its outer surface.

7. according to the refrigeration equipment of claim 6, it is characterized in that: said rib (28) is arranged on the total length of holding part (27) and engages with the outer surface of clamp segment (21) at least approximately highly in the same manner.

8. according to the refrigeration equipment of claim 6 or 7, it is characterized in that: be furnished with four ribs (28) on the outer surface of holding part (27), these ribs are approximately with on the circumference that is distributed in holding part (27) that equates.

9. according to the refrigeration equipment of claim 1, it is characterized in that: said cup-shaped moulding district (14) and reinforcer (20) all manufacture circular cross section.