CN104627089A - Sealing device for car body cavity - Google Patents
Sealing device for car body cavity Download PDFInfo
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- CN104627089A CN104627089A CN201510017044.XA CN201510017044A CN104627089A CN 104627089 A CN104627089 A CN 104627089A CN 201510017044 A CN201510017044 A CN 201510017044A CN 104627089 A CN104627089 A CN 104627089A
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- Prior art keywords
- car body
- sheet metal
- metal component
- body hollow
- dividing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/06—Sealing strips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a sealing device for a car body cavity. The sealing device comprises a first sheet metal part, a second sheet metal part, a third sheet metal part, two partition plates, baffles located on the partition plates, a plurality of buckles and thermal expansion rubber strips. The two partition plates are transversely placed in the car body cavity formed by the sheet metal plates, each thermal expansion rubber strip is arranged in the gap between the baffle arranged around the corresponding partition plate and the inner wall of the cavity, the thermal expansion rubber strips generate directional expansion after being heated under the double-face clamping action of the baffles and the inner wall of the cavity, and therefore the gaps between the baffles and the car body cavity are fully filled, and the car body cavity is tightly sealed. Meanwhile, due to the arrangement of the two partition plates, the strength of the device is enhanced, the edges of the partition plates play a role in supporting the thermal expansion rubber strips, the thermal expansion rubber strips are always attached to the partition plates and are unlikely to fall off because of gravity or liquid impact, the thermal expansion rubber strips are always supported by the two partition plates to be tightly attached to the inner wall of the car body cavity, and the seal state of the car body cavity is kept.
Description
Technical field
The present invention relates to cavities seals technical field, particularly a kind of car body hollow sealing arrangement.
Background technology
Automotive body structure generally by Metal plate through punch and weld, for meeting body stiffness, manufacturing assembling needs and cost needs, body side wall, as sill strip, generally be designed to the cavity structure relatively fastened by the sheet metal component of two lobe half hull shape shapes, and this cavity structure generally offers hole, conduct oneself with dignity for reducing vehicle body and meet application needs.But automobile in the process of moving, eddy current is formed in the cavity that the hole that high velocity air is easily offered from cavity enters car body, produce turbulent air noise, and cause the resonance of sheet metal component, cause sheet metal component resonance noise, affect driver comfort, simultaneously, compartment easily wetly and dirt enters, and can form corrosion injury to car body.Therefore, need seal this cavity.
The car body hollow sealing means of prior art, the expansion slab rubber that general employing thermal expansion material is processed into sheet blocks cavity, namely, according to the shape of cavity cross section, and the chip expansion slab rubber of monoblock is cut, be fit in this cavity by the expansion slab rubber cut out again, after high-temperature baking, expansion slab rubber volume expands at double, thus realizes the sealing barrier effect to cavity.
Realizing in process of the present invention, contriver finds that prior art at least exists following problem:
The chip expansion slab rubber of prior art is snapping fits in car body hollow, because expansion slab rubber controls to support without object in cavity, therefore the expansion direction after being heated is unrestricted, then easily still there is gap after inflation and between car body hollow inwall, thus be difficult to ensure the sealing effectiveness to car body hollow.
Summary of the invention
In order to the chip expansion slab rubber solving prior art be heated after expansion direction indefinite, easily and produce gap between car body hollow and cause poorly sealed problem, embodiments provide a kind of car body hollow sealing arrangement.Described technical scheme is as follows:
A kind of car body hollow sealing arrangement, described car body hollow sealing arrangement comprises: the first sheet metal component, second sheet metal component, 3rd sheet metal component, two dividing plates, be positioned at the baffle plate on described dividing plate, multiple buckle and het expansion adhesive tape, described first sheet metal component is relative with described 3rd sheet metal component fastens formation car body hollow, described second sheet metal component is between described first sheet metal component and described 3rd sheet metal component, and described second sheet metal component and described first sheet metal component, 3rd sheet metal component is fixedly connected with respectively, described car body hollow is divided into the first chamber and the second chamber by described second sheet metal component, described second sheet metal component is provided with mounting hole,
Two described dividing plates lay respectively in described first chamber and described second chamber, and the outer rim of dividing plate in described first chamber is pressed close to mutually with the inwall in described first chamber, the outer rim of the dividing plate in described second chamber is pressed close to mutually with the inwall in described second chamber, each described dividing plate is equipped with described buckle, buckle on two described dividing plates is oppositely arranged, and be located in same mounting hole from the both sides of described second sheet metal component respectively
All vertically on each described dividing plate be provided with described baffle plate, described baffle plate near described dividing plate outer rim and arrange around described dividing plate, space is provided with between the inwall of described baffle plate and described car body hollow, be provided with described het expansion adhesive tape in described space, after described het expansion adhesive tape expanded by heating, fill up described space.
As preferably, the gap length between described baffle plate and described car body hollow inwall is 7.5-19mm.
Further, described car body hollow sealing arrangement also comprises boss, all vertically on each described dividing plate be provided with described boss, described boss is positioned at the outer rim of described dividing plate and arranges around described dividing plate, at a distance of 2.5-5mm between described boss and described baffle plate, and the height of described baffle plate is greater than the height of described boss, between described baffle plate and described boss, form first passage.
Further, described dividing plate is provided with multiple through hole, described dividing plate is provided with boss along the inner edge of each described through hole, baffle plate is surrounded with outside described boss, distance between described baffle plate and described boss is 2.5-5mm, and the height of described baffle plate is greater than the height of described boss, form second channel between described baffle plate and described boss, described second channel is communicated with described first passage.
Further, described car body hollow sealing arrangement also comprises anti-flash step, be equipped with described anti-flash step in described first passage, described second channel, and the setting of described baffle plate is close to by described anti-flash step, the height of described anti-flash step is less than the height of described baffle plate.
Further, described car body hollow sealing arrangement also comprises multiple support limit stop, and the both sides described dividing plate being positioned at each described buckle are equipped with described support limit stop, and each described support limit stop is all between described dividing plate and described second sheet metal component.
Particularly, each described buckle includes a fixing chuck plate and two bending elastic card claws, two described elastic card claws are separately positioned on the both sides of described fixing chuck plate, and the side away from described fixing chuck plate on each described elastic card claw is equipped with draw-in groove, described draw-in groove engages with the inner edge of described mounting hole.
As preferably, the material of described dividing plate is nylon material, and the fusing point of described nylon material is higher than 250 DEG C.
As preferably, described het expansion adhesive tape is flexible foamed material, and the het expansion temperature of described het expansion adhesive tape is 140 DEG C-220 DEG C.
Further, described het expansion adhesive tape be heated after volume expansion ratio be greater than 500%.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
In the first chamber that the present invention forms the first sheet metal component of car body by being separately positioned on by two dividing plates, the second sheet metal component, the 3rd sheet metal component are formed and the second chamber, dividing plate is provided with a circle baffle plate near outer fringe position, het expansion adhesive tape is provided with in space between baffle plate and the inwall of car body hollow, het expansion adhesive tape is under the two sides clamping action of baffle plate and cavity inner wall, after being heated, volume expands to the direction be not restricted, thus the space between baffle plate and car body hollow is filled up fully, car body hollow is then by tight packing; Simultaneously, the setting of two dividing plates adds the intensity of this device, its edge serves the effect of support in injection moulding and thermal expansion process to het expansion adhesive tape, het expansion adhesive tape is attached on dividing plate all the time, and not easily drop because of gravity or hydraulic shock, two dividing plates support het expansion adhesive tape all the time and keep fitting tightly between car body hollow inwall, ensure that the stability of sealing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the car body hollow sealing arrangement that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the car body hollow that further embodiment of this invention provides;
Fig. 3 to Fig. 6 is the installation process schematic diagram of the car body hollow sealing arrangement that further embodiment of this invention provides;
Fig. 7 is the structural representation of the car body hollow sealing arrangement after the het expansion adhesive tape that provides of further embodiment of this invention expands;
Fig. 8 is the part-structure schematic diagram of the car body hollow sealing arrangement that further embodiment of this invention provides;
Fig. 9 is the part-structure schematic diagram of the car body hollow sealing arrangement that further embodiment of this invention provides;
Figure 10 is the part-structure schematic diagram of the car body hollow sealing arrangement that further embodiment of this invention provides;
Figure 11 is the cross sectional representation of the dividing plate that further embodiment of this invention provides;
Figure 12 is the structural representation of the second sheet metal component that further embodiment of this invention provides;
Figure 13 is the part-structure schematic diagram of the car body hollow sealing arrangement that further embodiment of this invention provides;
Figure 14 is the schematic diagram that two dividing plates that further embodiment of this invention provides are installed in opposite directions;
The structural representation of the buckle that Figure 15 provides for further embodiment of this invention;
The schematic diagram that two buckles that Figure 16 provides for further embodiment of this invention are mounted opposite;
The position view of car body hollow on vehicle body that Figure 17 provides for further embodiment of this invention;
Wherein: 1 first sheet metal component,
2 second sheet metal components, 21 mounting holes, 22 auxiliary holes,
3 the 3rd sheet metal components,
4 dividing plates, 41 through holes, 411 fixed legs, 42 corner fixed legs
5 buckles, 51 elastic card claws, 511 draw-in grooves, 52 fixing chuck plates,
6 het expansion adhesive tape, 61 corner boss, 62 mounting hole seal bosses, 63 auxiliary hole seal bosses,
7 baffle plates,
8 support limit stops,
9 boss,
10 anti-flash steps.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
As shown in Figure 1, also can see Fig. 2, embodiments provide a kind of car body hollow sealing arrangement, described car body hollow sealing arrangement comprises: the first sheet metal component 1, second sheet metal component 2, 3rd sheet metal component 3, two dividing plates 4, be positioned at the baffle plate 7 on described dividing plate 4, multiple buckle 5 and het expansion adhesive tape 6, described first sheet metal component 1 forms car body hollow with relative fastening of described 3rd sheet metal component 3, described second sheet metal component 2 is between described first sheet metal component 1 and described 3rd sheet metal component 3, and described second sheet metal component 2 and described first sheet metal component 1, 3rd sheet metal component 3 is fixedly connected with respectively, described car body hollow is divided into the first chamber and the second chamber by described second sheet metal component 2, described second sheet metal component 2 is provided with mounting hole 21,
Two described dividing plates 4 lay respectively in described first chamber and described second chamber, and the outer rim of dividing plate 4 in described first chamber is pressed close to mutually with the inwall in described first chamber, the outer rim of the dividing plate 4 in described second chamber is pressed close to mutually with the inwall in described second chamber, each described dividing plate 4 is equipped with described buckle 5, buckle 5 on two described dividing plates 4 is oppositely arranged, and be located in same mounting hole 21 from the both sides of described second sheet metal component 2 respectively
All vertically on each described dividing plate 4 be provided with described baffle plate 7, described baffle plate 7 near described dividing plate 4 outer rim and arrange around described dividing plate 4, space is provided with between described baffle plate 7 and the inwall of described car body hollow, be provided with described het expansion adhesive tape 6 in described space, after described het expansion adhesive tape 6 expanded by heating, fill up described space.
Wherein, as shown in Figure 2, first sheet metal component 1, 3rd sheet metal component 3 relatively fastening then constitutes car body hollow, the i.e. body side wall framework of hollow, second sheet metal component 2 is positioned at the first sheet metal component 1, between 3rd sheet metal component 3, car body hollow is divided into the first chamber and the second chamber, in the first chamber that two dividing plates 4 are horizontally placed on the second sheet metal component 2 both sides respectively and the second chamber, as shown in Figure 1, each dividing plate 4 is provided with baffle plate 7, baffle plate 7 is arranged around dividing plate 4 and certain distance within being positioned at the outer rim of dividing plate 4, therefore between baffle plate 7 and the inwall of car body hollow, there is certain space, the het expansion adhesive tape 6 be provided with in this space is by the cubic expansion that is heated, thus all spaces between baffle plate 7 and the inwall of car body hollow are filled up, namely, the cross section of car body hollow blocks by dividing plate 4 and het expansion adhesive tape 6, to reach the object of sealing car body hollow.
Het expansion adhesive tape 6 is at baffle plate 7 with under the two sides clamping action of cavity inner wall, and after being heated, volume expands to the direction be not restricted, thus is filled up fully in the space between baffle plate 7 and car body hollow, and car body hollow is then by tight packing; Simultaneously, the setting of two dividing plates 4 adds the intensity of this device, its edge serves the effect of support in injection moulding and thermal expansion process to het expansion adhesive tape 6, het expansion adhesive tape 6 is made to be attached on dividing plate 4 all the time, and not easily because gravity drops, two dividing plates 4 support het expansion adhesive tape 6 all the time and keep fitting tightly between car body hollow inwall, ensure that the stability of sealing;
The shape of two dividing plates 4 is adapted to the shape of cross-sectional plane in the first chamber, the second chamber respectively, and the outer rim of dividing plate 4 is pressed close to mutually with the inwall of cavity, therebetween the optional 5-14mm of distance, preferred 6-10mm, while making het expansion adhesive tape 6 be attached to the edge of dividing plate 4, go out suitable expansion space more than staying, the het expansion adhesive tape 6 preventing the sheet metal component forming car body hollow to be inflated struts distortion.
As shown in Fig. 3 to Fig. 7, the present invention first by het expansion adhesive tape 6 injection moulding in the edge of dividing plate 4, again two dividing plates 4 are installed on the second sheet metal component 2 by the cooperation of buckle 5 and mounting hole 21, then be buckled in outside dividing plate 4 by the first sheet metal component 1 and the 3rd sheet metal component 3 correspondence, and respectively with the second sheet metal component 2 weld together, then make two dividing plates 4 be individually fixed in the first chamber and the second chamber;
Dividing plate 4 is installed fixing complete, and automobile body welding complete after enter coating space processing, after pre-processing, electrophoresis operation, car body sends into high-temperature baking 15-25min in paint oven, then het expansion adhesive tape 6 is heated and is expanded, and is all filled up in the space between baffle plate 7 and cavity inner wall, and dividing plate 4, baffle plate 7 are adhesively fixed integral with sheet metal component by het expansion adhesive tape 6 closely, block whole car body hollow cross section, thus car body hollow is sealed, see Fig. 7.
As shown in Figure 3, side near the second sheet metal component 2 on two dividing plates 4 is respectively equipped with buckle 5, and the second sheet metal component 2 is provided with mounting hole 21 corresponding with it, in the buckle 5 same mounting hole 21 be located on the second sheet metal component 2 facing each other, two dividing plates 4 are made to be individually fixed in the second sheet metal component 2 from the both sides of the second sheet metal component 2, dividing plate 4 and het expansion adhesive tape 6 is made all firmly to be fixed on desired location in car body hollow, make stable connection between each several part of the present invention, ensure the sealing of car body hollow all the time;
The shape of mounting hole 21 can be determined according to the demand of structure, and can be square, circle or polygon, as long as buckle 5 can be made to pass, make het expansion adhesive tape 6 be fixed on desired location, the preferred length of side of the present invention is the foursquare mounting hole 21 of 6-10mm.
Embodiment two
As shown in Figure 1, also can see Fig. 2, further embodiment of this invention provides a kind of car body hollow sealing arrangement, described car body hollow sealing arrangement comprises: the first sheet metal component 1, second sheet metal component 2, 3rd sheet metal component 3, two dividing plates 4, be positioned at the baffle plate 7 on described dividing plate 4, multiple buckle 5 and het expansion adhesive tape 6, described first sheet metal component 1 forms car body hollow with relative fastening of described 3rd sheet metal component 3, described second sheet metal component 2 is between described first sheet metal component 1 and described 3rd sheet metal component 3, and described second sheet metal component 2 and described first sheet metal component 1, 3rd sheet metal component 3 is fixedly connected with respectively, described car body hollow is divided into the first chamber and the second chamber by described second sheet metal component 2, described second sheet metal component 2 is provided with mounting hole 21,
Two described dividing plates 4 lay respectively in described first chamber and described second chamber, and the outer rim of dividing plate 4 in described first chamber is pressed close to mutually with the inwall in described first chamber, the outer rim of the dividing plate 4 in described second chamber is pressed close to mutually with the inwall in described second chamber, each described dividing plate 4 is equipped with described buckle 5, buckle 5 on two described dividing plates 4 is oppositely arranged, and be located in same mounting hole 21 from the both sides of described second sheet metal component 2 respectively
All vertically on each described dividing plate 4 be provided with described baffle plate 7, described baffle plate 7 near described dividing plate 4 outer rim and arrange around described dividing plate 4, space is provided with between described baffle plate 7 and the inwall of described car body hollow, be provided with described het expansion adhesive tape 6 in described space, after described het expansion adhesive tape 6 expanded by heating, fill up described space.
As preferably, the gap length between described baffle plate 7 and described car body hollow inwall is 7.5-19mm, preferred 8.5-15mm.This space comprises the distance between Distance geometry dividing plate 4 outer rim to cavity inner wall between baffle plate 7 to dividing plate 4 outer rim, the width in this space can set with reference to factors such as the rigidity of the volume expansion ratio of the het expansion adhesive tape 6 in practical operation, baffle plate 7 and dividing plate 4, to guarantee that het expansion adhesive tape 6 can fill up the space between baffle plate 7 and cavity after inflation flexibly.
As shown in Figure 8, also can see Fig. 9, further, described car body hollow sealing arrangement also comprises boss 9, all vertically on each described dividing plate 4 be provided with described boss 9, described boss 9 is positioned at the outer rim of described dividing plate 4 and arranges around described dividing plate 4, at a distance of 2.5-5mm between described boss 9 and described baffle plate 7, and the height of described baffle plate 7 is greater than the height of described boss 9, between described baffle plate 7 and described boss 9, form first passage.
As shown in Figure 8, also can see Fig. 9, further, described dividing plate 4 is provided with multiple through hole 41, described dividing plate 4 is provided with boss 9 along the inner edge of each described through hole 41, is surrounded with baffle plate 7 outside described boss 9, distance between described baffle plate 7 and described boss 9 is 2.5-5mm, and the height of described baffle plate 7 is greater than the height of described boss 9, form second channel between described baffle plate 7 and described boss 9, described second channel is communicated with described first passage.
Wherein, boss 9 for prevent het expansion adhesive tape 6 from landing dividing plate 4 cause poorly sealed; Each dividing plate 4 is divided into upper and lower two sides, two sides are relative and symmetrical, namely two sides of dividing plate 4 are equipped with described boss 9 and baffle plate 7, for ease of describing, below all only to wherein simultaneously describing, therefore described boss 9 and the height of baffle plate 7, be it and be positioned at height in the wherein one side of dividing plate 4.
Dividing plate 4 is provided with through hole 41, the preferred 1-3 of through hole 41 number on each dividing plate 4, through hole 41 preferred length is the waist-shaped hole of 11-21mm, het expansion adhesive tape 6 is injection-moulded in second channel, namely after in the strip channel that boss 9 and the baffle plate 7 of through hole 41 setting are formed, before expanded by heating, the het expansion adhesive tape 6 in each through hole 41 surrounds a long waist-shaped hole for 5-16mm, and this waist-shaped hole can see Figure 10 or Figure 13;
The setting of this waist-shaped hole is convenient to automobile in the fabrication process, required process liquid is passed in each car body hollow, thus each element of order composition car body hollow, namely the inwall of the first sheet metal component 1, second sheet metal component 2, the 3rd sheet metal component 3 is infiltrated all fully, reduce the corrosion phenomenon that car body hollow inside occurs, be also beneficial to bonding with between sheet metal component of het expansion adhesive tape 6 simultaneously;
Now two dividing plates 4 are divided into the first dividing plate 4 and second partition 4, wherein, as shown in Figure 8, be the first dividing plate 4 with its on the three-dimensional view of boss 9, baffle plate 7 and through hole 41 that arranges, as shown in Figure 9, for second partition 4 with its on the three-dimensional view of boss 9, baffle plate 7 and through hole 41 that arranges, preferred 3 through holes 41 on the first dividing plate 4, through hole 41 on second partition 4 preferably on 1 large-scale through hole 41, two dividing plate 4 all can select size according to actual conditions; As shown in Figure 9, if the size of through hole 41 is bigger than normal, then can arrange multiple fixed leg 411 in the inner edge of through hole 41, for stationary heat expansion adhesive tape 6 (can see Figure 13), increase its rigidity, and make het expansion adhesive tape 6 even inflation in expanded by heating process, to cause through hole 41 to seal imperfect in shape distortion to avoid generation to cleave.
As shown in Figure 8, also can see Fig. 9, first passage is looped around around dividing plate 4, and second channel is looped around each through hole 41 around, and interconnects, and is convenient to passage het expansion adhesive tape 6 directly injected on whole dividing plate 4; First passage and second channel are both sides and divide baffled 7 and boss 9, for het expansion adhesive tape 6 is fixedly supported on dividing plate 4, prevent het expansion adhesive tape 6 sagging and depart from dividing plate 4 because of gravity in injection moulding process and after melted by heating, simultaneously also for limiting expansion direction during het expansion adhesive tape 6 expanded by heating, make it vertically to expand in the direction of dividing plate 4 as far as possible, thus the thickness after controlling the expansion of het expansion adhesive tape 6 on dividing plate 4, ensure the cooled rigidity of het expansion adhesive tape 6 expanded by heating; The design of above-mentioned two passages, is convenient to the demoulding after dividing plate 4 injection mo(u)lding, decreases stripping process, has saved the setup time of workpiece.
The thickness of dividing plate 4 can be selected between 1-4mm, preferred 1.5-3mm, meets the demand of automobile to noise insulation factor; The height of baffle plate 7 is chosen as 5-13mm, preferred 7mm; The width all preferably 3.7mm of first passage and second channel.
As shown in Figure 10, also see Figure 11 and Figure 12, when sheet metal component is provided with auxiliary hole 22 because of needs, then dividing plate 4 can be designed to arcuate structure, avoid this auxiliary hole 22.
As shown in Figure 8, also can see Fig. 9, further, described car body hollow sealing arrangement also comprises anti-flash step 10, described anti-flash step 10 is equipped with in described first passage, described second channel, and described anti-flash step 10 is close to described baffle plate 7 and is arranged, the height of described anti-flash step 10 is less than the height of described baffle plate 7.
Wherein, after anti-flash step 10 is arranged in first passage and second channel, make the cross section of two these passages all T-shaped, the passage of T-shaped is conducive to preventing het expansion adhesive tape 6 from the phenomenon of flash, overlap occurring in injection moulding process; The optional 2-5mm of the height of anti-flash step 10 on dividing plate 4, preferred 3mm, the preferred 0.5-1mm of its width; Anti-flash step 10 is away from the side of baffle plate 7 to the optional 2-4mm of distance between boss 9, and preferred 3mm, this size can be selected flexibly according to the expansion multiplying power of selected het expansion adhesive tape 6.
As shown in figure 14, further, described car body hollow sealing arrangement also comprises multiple support limit stop 8, and the both sides described dividing plate 4 being positioned at each described buckle 5 are equipped with described support limit stop 8, and each described support limit stop 8 is all between described dividing plate 4 and described second sheet metal component 2.
Wherein, support limit stop 8 one end is fixed on dividing plate 4, another is rectified the second sheet metal component 2, when the buckle 5 on two dividing plates 4 is located in mounting hole, support limit stop 8 then presses close to the second sheet metal component 2 (see Fig. 1) away from one end of its place dividing plate 4, prevent het expansion adhesive tape 6 in thermal expansion process or under the washing away of process liquid, and offset between the second sheet metal component 2, namely, restriction het expansion adhesive tape 6 produces play in car body hollow, het expansion adhesive tape 6 is made firmly to be fixed on desired location in car body hollow, ensure that the present invention is to the sealing effectiveness of car body hollow, the preferred 20-50mm of distance between support limit stop 8 fixed end on dividing plate 4 to the other end, simultaneously, support limit stop 8 presses close to the space that can reserve 0.1-0.3mm between one end of the second sheet metal component 2 and the second sheet metal component 2, the preferred 0.2mm in this space, for reserving expansion space between het expansion adhesive tape 6 and the second sheet metal component 2, reduce the pulling force that bears when het expansion adhesive tape 6 expands of buckle 5, extend buckle 5 service life.
As shown in figure 15, particularly, each described buckle 5 includes a fixing chuck plate 52 and two bending elastic card claws 51, two described elastic card claws 51 are separately positioned on the both sides of described fixing chuck plate 52, and each described elastic card claw 51 is equipped with draw-in groove 511 away from the side of described fixing chuck plate 52, described draw-in groove 511 engages with the inner edge of described mounting hole 21.
Wherein, when buckle 5 stretches in mounting hole 21, bending elastic card claw 51 both sides are shunk, the appropriate location in mounting hole 21 to be extend into, and elastic card claw 51 both sides are opened, and draw-in groove 511 engages with the inner edge of mounting hole 21; As shown in figure 16, also can see Figure 14, two buckle 5 sides being positioned at same mounting hole 21 are affixed, and each draw-in groove 511 all engages with mounting hole 21 inner edge, two fixing chuck plates 52 are also affixed side, its from two sides be then affixed with the inner edge of mounting hole 21, prevent buckle 5 from rotating in mounting hole 21.
As shown in figure 13, in order to seal around mounting hole 21, het expansion adhesive tape 6 is also provided with mounting hole seal boss 62, arrange around each buckle 5, meanwhile, when sheet metal component is provided with auxiliary hole 22, also auxiliary hole seal boss 63 can be set to het expansion adhesive tape 6 pressed on ring winding technologe hole 22, after het expansion adhesive tape 6 expanded by heating, described mounting hole 21 and auxiliary hole 22 are sealed.
As preferably, the material of described dividing plate 4 is nylon material, and the fusing point of described nylon material is higher than 250 DEG C.Dividing plate 4, baffle plate 7, boss 9, buckle 5, anti-flash step 10, support limit stop 8, nylon material is beyond heat extraction expansion adhesive tape 6 and sheet metal component in the present invention, and preferred PA66, also known as nylon66 fiber, polyamide 66, also be polyhexamethylene adipamide material, its fusing point is 252 DEG C.
Above-mentioned each parts also can select conventional thermoplastic synthetic material, as high temperature polyolefins, polyamide (PA6, PA1010, PA46, PA610, PA612 etc.), polyimide, polyethylene terephthalate, aromatic polyether, poly ether-ketone (PEK) etc., these poly-mers comprise filler, antioxidant, fire retardant, other stabilizer usually, and pigment, plasticizer, tackifier, strengthening and/or toughening material, such as glass fibre, elasticizer etc.
As preferably, described het expansion adhesive tape 6 is flexible foamed material, and the het expansion temperature of described het expansion adhesive tape 6 is 140 DEG C-220 DEG C.
Wherein, flexible foamed material is with raws MAT'L such as plastics (PE, EVA etc.), rubber (SBR, CR etc.), the in addition auxiliary material such as catalyst, foam stabilizer, foaming agent, plasticizer, tackifier, by physical method, as heating, make in plastics and rubber, to occur a large amount of trickle foam, volume increases, and density reduces, and flexible foamed quality of materials is light, pliability good, possess the functions such as buffering, sound-absorbing, shock-absorbing, insulation, filtration, be widely used.Wherein tackifier preferred olefin polymers, for increasing het expansion adhesive tape 6 and dividing plate 4, car body sheet metal component between Joint strenght and leak tightness.
The het expansion temperature of het expansion adhesive tape 6 will lower than the fusing point of the nylon material parts such as dividing plate 4, baffle plate 7 and boss 9, when het expansion adhesive tape 6 is expanded with the 150-190 DEG C of concurrent heat-dissipating of baking in paint oven, dividing plate 4 and baffle plate 7, boss 9 etc. do not deform for the parts supported, avoid each parts of nylon material under high temperature softening by het expansion adhesive tape 6 crimp, and can not actv. sealing car body hollow.
Further, described het expansion adhesive tape 6 be heated after volume expansion ratio be greater than 500%, space between dividing plate 4 and car body hollow and through hole 41 can be filled up with the volume after ensureing its expansion, after instant heating expansion adhesive tape 6 expands, the present invention can block the cross section of car body hollow, reaches the effect of sealing car body hollow.
Meanwhile, the material that het expansion adhesive tape 6 preferred density is little, as density is less than 1.1g/cm
3expanded material, with expendable weight, to a certain degree can alleviate tare when large usage quantity, reduce vehicle fuel, promote economy.
In addition, as shown in Figure 10, because car body hollow is formed by sheet metal component overlap joint, inevitably there is position, corner, in order to reach better sealing effectiveness, the present invention is provided with corner boss 61 in the het expansion adhesive tape 6 near this position, corner, simultaneously, as shown in Figure 9, dividing plate 4 near this position, corner is provided with corner fixed leg 42, thus when making het expansion adhesive tape 6 expanded by heating, corner boss 61 is attached on corner fixed leg 42, under the support of corner fixed leg 42, the position, corner of car body hollow is fully sealed.
Het expansion adhesive tape 6 is before expanded by heating, the preferred 4-6mm of distance between the outer at its position, non-corner and sheet metal component inwall, the distance of then preferred 1-2mm between the outer of the corner boss 61 simultaneously near position, corner in het expansion adhesive tape 6 and sheet metal component inwall, according to diverse location, different spaces is set, can to the equal tight seal in each position in car body hollow cross section after ensureing het expansion adhesive tape 6 cubic expansion.
All preferred sizes in sum, all be applicable to A, B position of body side cavity as shown in figure 17, i.e. the cavity at automobile door sill position, and be directed to the cavity at other position of vehicle body, as C, D position, then can change each above-mentioned dimensional data according to actual needs flexibly.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a car body hollow sealing arrangement, described car body hollow sealing arrangement comprises: the first sheet metal component, second sheet metal component, 3rd sheet metal component, two dividing plates, be positioned at the baffle plate on described dividing plate, multiple buckle and het expansion adhesive tape, described first sheet metal component is relative with described 3rd sheet metal component fastens formation car body hollow, described second sheet metal component is between described first sheet metal component and described 3rd sheet metal component, and described second sheet metal component and described first sheet metal component, 3rd sheet metal component is fixedly connected with respectively, described car body hollow is divided into the first chamber and the second chamber by described second sheet metal component, described second sheet metal component is provided with mounting hole, it is characterized in that,
Two described dividing plates lay respectively in described first chamber and described second chamber, and the outer rim of dividing plate in described first chamber is pressed close to mutually with the inwall in described first chamber, the outer rim of the dividing plate in described second chamber is pressed close to mutually with the inwall in described second chamber, each described dividing plate is equipped with described buckle, buckle on two described dividing plates is oppositely arranged, and be located in same mounting hole from the both sides of described second sheet metal component respectively
All vertically on each described dividing plate be provided with described baffle plate, described baffle plate near described dividing plate outer rim and arrange around described dividing plate, space is provided with between the inwall of described baffle plate and described car body hollow, be provided with described het expansion adhesive tape in described space, after described het expansion adhesive tape expanded by heating, fill up described space.
2. car body hollow sealing arrangement according to claim 1, is characterized in that, the gap length between described baffle plate and described car body hollow inwall is 7.5-19mm.
3. car body hollow sealing arrangement according to claim 2, it is characterized in that, described car body hollow sealing arrangement also comprises boss, all vertically on each described dividing plate be provided with described boss, described boss is positioned at the outer rim of described dividing plate and arranges around described dividing plate, at a distance of 2.5-5mm between described boss and described baffle plate, and the height of described baffle plate is greater than the height of described boss, forms first passage between described baffle plate and described boss.
4. car body hollow sealing arrangement according to claim 3, it is characterized in that, described dividing plate is provided with multiple through hole, described dividing plate is provided with boss along the inner edge of each described through hole, be surrounded with baffle plate outside described boss, the distance between described baffle plate and described boss is 2.5-5mm, and the height of described baffle plate is greater than the height of described boss, form second channel between described baffle plate and described boss, described second channel is communicated with described first passage.
5. car body hollow sealing arrangement according to claim 4, it is characterized in that, described car body hollow sealing arrangement also comprises anti-flash step, described anti-flash step is equipped with in described first passage, described second channel, and the setting of described baffle plate is close to by described anti-flash step, the height of described anti-flash step is less than the height of described baffle plate.
6. car body hollow sealing arrangement according to claim 5, it is characterized in that, described car body hollow sealing arrangement also comprises multiple support limit stop, the both sides described dividing plate being positioned at each described buckle are equipped with described support limit stop, and each described support limit stop is all between described dividing plate and described second sheet metal component.
7. car body hollow sealing arrangement according to claim 6, it is characterized in that, each described buckle includes a fixing chuck plate and two bending elastic card claws, two described elastic card claws are separately positioned on the both sides of described fixing chuck plate, and the side away from described fixing chuck plate on each described elastic card claw is equipped with draw-in groove, described draw-in groove engages with the inner edge of described mounting hole.
8. the car body hollow sealing arrangement according to any one of claim 1-7, is characterized in that, the material of described dividing plate is nylon material, and the fusing point of described nylon material is higher than 250 DEG C.
9. car body hollow sealing arrangement according to claim 8, is characterized in that, described het expansion adhesive tape is flexible foamed material, and the het expansion temperature of described het expansion adhesive tape is 140 DEG C-220 DEG C.
10. car body hollow sealing arrangement according to claim 9, is characterized in that, described het expansion adhesive tape be heated after volume expansion ratio be greater than 500%.
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| CN201510017044.XA CN104627089B (en) | 2015-01-13 | 2015-01-13 | Sealing device for car body cavity |
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| CN201510017044.XA CN104627089B (en) | 2015-01-13 | 2015-01-13 | Sealing device for car body cavity |
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| CN113400554A (en) * | 2021-06-08 | 2021-09-17 | 安吉县聚源家具有限公司 | Seat board is with automatic quick forming die who prevents liquid seepage |
| US11511610B2 (en) | 2018-11-12 | 2022-11-29 | Shape Corp. | Vehicle door carrier with integrated edge seal and method of manufacture |
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| CN104627089B (en) | 2017-01-25 |
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