CN101396958A - Door weatherstrip - Google Patents
Door weatherstrip Download PDFInfo
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- CN101396958A CN101396958A CNA2008101688460A CN200810168846A CN101396958A CN 101396958 A CN101396958 A CN 101396958A CN A2008101688460 A CNA2008101688460 A CN A2008101688460A CN 200810168846 A CN200810168846 A CN 200810168846A CN 101396958 A CN101396958 A CN 101396958A
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Abstract
The invention provides a door weatherstrip which can simultaneously stabilize mounting station and improve seality and meet the requirement of weight lighting. A door weatherstrip includes a mounted base portion which is mounted along an outer circumference of a door frame, and a seal portion which extends in an outer circumferential direction of a door from the mounted base portion. The mounted base portion includes a base bottom portion, a vehicle-interior side wall portion and a vehicle-exterior side wall portion, and an isolating wall portion. The mounted base portion is made from an EPDM sponge rubber material into which polyethylene is mixed to have a specific gravity of 0.2 or larger and smaller than 0.45 and a low expansion stress of 200 kPa or larger. The seal portion is made from an EPDM sponge rubber material having a specific gravity of 0.45 or larger and 1.0 or smaller and a low expansion stress of 120 kPa or larger and smaller than 200 kPa. Thus, the door weatherstrip is provided in which the specific gravity of the mounted base portion is made smaller than the specific gravity of the seal portion and a material rigidity of the mounted base portion is larger than a material rigidity of the seal portion.
Description
Technical field
The present invention relates to a kind of door weather strip, its have be installed on vehicle door periphery be mounted in the portion the installation base portion and from base portion being installed to the extended sealing of car door peripheral direction.
Background technology
Usually, on the circumference of vehicle (automobile), door weather strip is installed with car door.This door weather strip has: base portion is installed, and it is installed on being mounted in the portion of car door periphery; And hollow sealing portion, it forms with base portion is installed, and has hollow bulb.And, when closing of the door,, thereby between car door and car body, seal by the hollow sealing portion of door weather strip and the car door opening periphery crimping of car body (car body).
Door weather strip has the base portion of installation and hollow sealing portion as mentioned above, and the effect at each position there are differences.That is, as base portion is installed,, therefore require between longer-term, to keep it that shape is installed owing to be the position in the portion of being mounted that is installed on the car door periphery.On the other hand, as hollow sealing portion, require its distortion with the car door opening periphery crimping of car body the time to follow performance.
But, as existing door weather strip, base portion and hollow sealing portion are installed utilize same material to form mostly, be difficult to realize simultaneously the above-mentioned performance of contradiction each other that can be described as.On the other hand, in fact also proposed to utilize different materials to constitute the technology (for example, with reference to patent documentation 1, patent documentation 2 etc.) that base portion and hollow sealing portion are installed.In this patent documentation 1,, use closely knit elastomeric material as base portion is installed.In addition, in this patent documentation 2,, use the expanded cellular rubber material (proportion is 0.7～0.9) of low foaming as base portion is installed.
Patent documentation 1: the spy opens communique 2002-No. 178769
Patent documentation 2: the spy opens clear 60-No. 206723 communiques
Summary of the invention
But, merely using closely knit elastomeric material, the expanded cellular rubber material of low foaming is as under the situation that base portion is installed, though can guarantee the rigidity of this installation base portion, realize the stabilization of installing condition, but for example in that roughly the location division of C word shape is chimeric and under the situation of installing to the section of car door, it is difficult that installation exercise becomes, as being installed, the base portion whole rigidity (particularly comprises the partition wall portions of installing between base portion and the sealing, section is the material stiffness of the part of mouthful word shape roughly) become too high, the closing of the door load during closing of the door is compared and might be increased with the situation of utilizing common sponge material to constitute.
In addition,, as being installed, base portion also disagrees for the expanded cellular rubber material that uses closely knit elastomeric material, low foaming with current lightweight requirements.
The present invention proposes in order to address the above problem a little, and its purpose is to provide a kind of door weather strip, and it can be realized the stabilization of installing condition simultaneously and improve sealing property, meet current lightweight requirements simultaneously.
Below, each scheme to being suitable for addressing the above problem describes item by item.In addition, as required, to its distinctive action effect of corresponding scheme note.
Scheme 1: a kind of door weather strip, it has: base portion is installed, and it is installed on being mounted in the portion of vehicle door periphery; And sealing, it extends to the car door peripheral direction from aforementioned installation base portion, under the state of closing of the door, and with the car door opening periphery crimping of vehicle body,
It is characterized in that,
Aforementioned installation base portion, by proportion more than or equal to 0.2 less than 0.45 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 200kPa,
Aforementioned sealing, by proportion be less than or equal to more than or equal to 0.45 1.0 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 120kPa,
Thereby, make the proportion of aforementioned installation base portion littler than the proportion of aforementioned sealing, make the material stiffness of aforementioned installation base portion bigger than the material stiffness of aforementioned sealing.
According to scheme 1, by making the installation base portion in the portion of being mounted that is installed in the car door periphery, by proportion more than or equal to 0.2 less than 0.45 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 200kPa, make sealing by proportion be less than or equal to more than or equal to 0.45 1.0 and low drawing stress the EPDM expanded cellular rubber material less than 200kPa constitutes more than or equal to 120kPa, thereby the proportion that base portion is installed is littler than sealing, and the material stiffness that base portion is installed is bigger than the material stiffness of sealing.
Thus, in the installing condition of door weather strip, can make the installation base portion not carry out unnecessary deformation, and realize the stabilization of installing condition.On the other hand and since the material stiffness of sealing for low drawing stress more than or equal to 120kPa less than 200kPa, smaller, therefore under the state of closing of the door, function admirable is followed in the distortion with the crimping of car door opening periphery the time.Its result realizes the raising of leak tightness.
And, owing to base portion is installed and sealing constitutes by EPDM expanded cellular rubber material, be respectively proportion more than or equal to 0.2 less than 0.45, and proportion be less than or equal to 1.0 more than or equal to 0.45, therefore can realize the single-piece lightweight.In addition, base portion is installed to be made of the material of low drawing stress more than or equal to 200kPa, though it is bigger that the material stiffness of base portion is installed, yet it is an expanded cellular rubber, compare with situation about constituting by close material etc., make easily when mounted the base portion distortion is installed, after in a single day the installation base portion was mounted, its shape was difficult to distortion.Its result for example when closing of the door, installs base portion and can produce distortion, and sealing is distortion thereupon also, can suppress the situation that the closing of the door load increases.
In addition and since install base portion by proportion more than or equal to 0.2 less than 0.45 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 200kPa, therefore crooked and when installing in the portion that is mounted that makes it along the car door periphery, can be easily crooked.Carry out bending and on the tracing ability this point when installing, compare with the situation that existing installation base portion uses the expanded cellular rubber material of closely knit elastomeric material, low foaming to constitute at this, high foaming expanded cellular rubber material of the present invention is excellent more.
In addition, as noted above, the index during as the rigidity of the expanded cellular rubber material that base portion etc. consider to constitute is installed exemplifies low drawing stress.More particularly, can utilize " regulation is extended drawing stress " M25 (drawing stress in the time of will making test piece produce the elongation of stipulating (25%) is divided by the long-pending value of the initial profile of test piece) of defined in " JISK6251 " to estimate (following identical).
In addition, according to scheme 1, because the low drawing stress that constitutes the expanded cellular rubber material that base portion is installed more than or equal to 200kPa, therefore can realize the action effect relevant with the stabilization of installing condition more reliably.
Here, the proportion that base portion is installed less than 0.2 situation under, be difficult to make low drawing stress more than or equal to 200kPa, proportion more than or equal to 0.45 situation under, though satisfy low drawing stress easily more than or equal to 200kPa, but focus on, little with existing expanded cellular rubber differences in materials like this, can't meet the weight-saving requirement.
The proportion of sealing be less than or equal to 0.45 and/or the situation of low drawing stress less than 120kPa under, under the state of closing of the door, with the crimping of car door opening periphery the time, descend from the screen resilience of car door opening periphery, its possibility of result descends leak tightness.In addition, its proportion greater than 1.0 situation under, can't meet the weight-saving requirement, simultaneously material stiffness becomes too high, increases the closing of the door degradation from the screen resilience of car door opening periphery.
And under the situation that sealing is made of more than or equal to the expanded cellular rubber material of 200kPa low drawing stress, the rigidity of material becomes too high, increases the closing of the door degradation from the screen resilience of car door opening periphery.
In addition, as the low drawing stress of sealing, more preferably greater than or equal 120kPa and less than 180kPa, further be preferably greater than or equal 120kPa and less than 150kPa.By forming said structure, the pliability of sealing improves, when closing of the door with and/or the closing of the door state in, its crimping with car door opening periphery is followed more neatly, thus the leak tightness raising.
Scheme 2: in scheme 1 described door weather strip, it is characterized in that aforementioned installation base portion has: basal part; Car inside side walls portion and car outside side wall portion, they extend to the car door peripheral direction from aforementioned basal part; And divider wall parts, it links aforementioned car inside side walls portion and car outside side wall portion, simultaneously with isolated between aforementioned substrates portion and the aforementioned sealing,
The material stiffness of aforementioned substrates portion, car inboard and car outside side wall portion and divider wall parts is bigger than the material stiffness of aforementioned sealing.
According to scheme 2, the basal part of not only aforementioned installation base portion, car inboard and car outside side wall portion, and the low drawing stress that makes the material stiffness that the divider wall parts between base portion and the sealing is installed is bigger than the material stiffness of aforementioned sealing also more than or equal to 200kPa.Therefore, for example the head card at the anchor clamps that usefulness will be installed ends under the situation on the divider wall parts, because the rigidity of this divider wall parts is bigger, therefore can realize the stabilization of the installing condition of anchor clamps.Its result can further realize the stabilization of installing condition.
Scheme 3: in scheme 1 or 2 described door weather strips, it is characterized in that aforementioned sealing has the hollow sealing portion that has hollow bulb in inside,
The material stiffness of aforementioned installation base portion is bigger than the material stiffness of aforementioned hollow sealing portion.
As the sealing of scheme 3, has the hollow sealing portion that has hollow bulb in inside.In the case, when the car door opening periphery crimping of sealing and car body,, therefore can seal with the sealed width of regulation because hollow sealing portion more easily shrivels distortion, or is out of shape in the mode of falling down.
Scheme 4: in the door weather strip described in the scheme 3, it is characterized in that aforementioned sealing also has sealing lip, the sealing lip is compared with aforementioned hollow sealing portion, is positioned at the car outside,
The material stiffness of aforementioned installation base portion is bigger than the material stiffness of aforementioned sealing lip.
According to scheme 4, under the situation of the sealing lip with the car outside that is positioned at hollow sealing portion, because aforementioned installation base portion is stably mounted, so the sealing lip can not carry out unnecessary deformation, can follow distortion along the car door opening periphery of car body.
Scheme 5: in any described door weather strip, it is characterized in that in scheme 1 to 4 aforementioned installation base portion is made of the expanded cellular rubber material that has mixed polyolefin resin.
Shown in scheme 1, diminish in order to make the proportion that base portion is installed, make the sealing band lightweight, as long as increase the foaming ratio, if but merely increase the foaming ratio, then material stiffness reduces, and can not bring into play the effect that base portion is installed.Increase at the foaming ratio that makes common expanded cellular rubber, less than under 0.45 the situation, low drawing stress is about 100kPa～150kPa to proportion more than or equal to 0.2.For this point, according to scheme 5, in being installed, base portion mixes polyolefin resin, and the rigidity of material is increased.In addition, base portion is installed is compared, not too require the elastic recovery performance with sealing.Therefore, even because of hybrid resin causes producing a little " elastic force weakens ", can there be special obstruction as the effect that base portion is installed yet.In addition, as polyene footpath resinoid, exemplify poly-vinyl resin as typical example, but also have acrylic resin, ethylene octene resin etc. in addition.In addition, the combined amount of polyolefin resin is 3 weight portions～10 weight portions with respect to 100 parts by weight of rubber.
If the combined amount of resin is less than 3 weight portions, be difficult to then guarantee that low drawing stress is more than or equal to 200kPa.In addition, if the mixed volume of resin more than 10 weight portions, then low drawing stress becomes too high, hardening and elongation reduces not flexible when the car door opening periphery of car body is installed, be difficult to be out of shape and follow.
For this point, according to scheme 5,, make drawing stress more than or equal to 200kPa owing to hybrid resin in constituting the material that base portion is installed, therefore can realize the action effect relevant more reliably with the stabilization of above-mentioned installing condition.
Scheme 6: in scheme 1 to 4 in any described door weather strip, it is characterized in that, the EPDM expanded cellular rubber material of aforementioned installation base portion, combined amount by making the alkadiene in the rubber is more than the combined amount in the sealing, when the EPDM of aforementioned installation base portion expanded cellular rubber material vulcanizes, make its crosslink density be higher than the crosslink density of aforementioned sealing element, thereby the low drawing stress of EPDM expanded cellular rubber material that makes aforementioned installation base portion is more than or equal to 200kPa.
According to scheme 6, because the EPDM expanded cellular rubber material of aforementioned installation base portion, combined amount by making the alkadiene in the rubber is more than the combined amount in the sealing, when vulcanizing, the EPDM of aforementioned installation base portion expanded cellular rubber material make its crosslink density be higher than the crosslink density of aforementioned sealing element, thereby therefore the low drawing stress of EPDM expanded cellular rubber material that makes aforementioned installation base portion can realize the action effect relevant with above-mentioned installing condition stabilization more reliably more than or equal to 200kPa.
In addition, have the door weather strip that is installed in the anchor clamps on the installation base portion, can shown in structure 7,8 described as follows, use.
Structure 7: any described sealing band in a kind of scheme 1 to 6, it has anchor clamps on the installation base portion, it is characterized in that,
Aforementioned anchor clamps have: the engagement section, and it can be embedded in aforementioned being mounted in the mounting hole that forms in the portion with engaging; And fastener, itself and aforementioned installation base portion card end,
Aforementioned engagement section has: bar-shaped axial region; Umbrella portion, its end from aforementioned axial region is expanded with blade of a sword shape; And the support portion, its peripheral part from aforementioned axial region reaches aforementioned umbrella portion side toward the outer side and extends,
Aforementioned fastener has: the hooking sheet portion of elongated shape, and it is positioned at the inner surface side of aforementioned installation base portion; And connecting part, it extends to the direction that the length direction with this hooking sheet portion intersects from aforementioned hooking sheet portion, and run through aforementioned installation base portion and link with aforementioned umbrella portion,
By will embedding the aforementioned mounting hole from the pronathous aforementioned engagement section of aforementioned installation, and the circumference that forms aforementioned mounting hole is clamped in the structure between the leading section of aforementioned umbrella portion and aforementioned support portion,
Form the insertion unit that tubular roughly and front end have sharp-pointed insertion pin by use, aforementioned insertion pin is thrust aforementioned installation base portion from its bottom surface side, make aforementioned hooking sheet portion by interior all sides of aforementioned insertion pin send to aforementioned installation base portion with aforementioned bottom surface be the inner surface side of opposition side, thereby aforementioned anchor clamps are installed on the aforementioned installation base portion.
Structure 8: a kind of door weather strip, it is characterized in that, by aforementioned insertion pin is thrust aforementioned substrates portion and divider wall parts, it is the inner surface side (hollow bulb side) of opposition side that aforementioned hooking sheet portion is sent to the aforementioned substrates portion with aforementioned divider wall parts (reference method 2), thereby aforementioned anchor clamps are installed on the aforementioned installation base portion.
According to structure 7,8, because hooking sheet portion and connecting part must be tiny structures on it constitutes, so might influence the stability of the installing condition of anchor clamps.For this point, as described in above-mentioned each structure,,, also can guarantee the stability of the installing condition of anchor clamps even therefore hooking sheet portion and connecting part are tiny because it is bigger that the rigidity of base portion is installed.That is,, can realize the following effects effect: " can omit for anchor clamps being installed on the door weather strip and wall thickness that base portion will be installed cuts or skiving and form the operation in peristome (hole) by using above-mentioned anchor clamps.Therefore, can avoid following forming aforementioned peristome and producing the processing bits, can omit the man-hour and the device (suction means) that are used to remove the processing bits.Its result can realize the raising of manufacturing operation and the raising of quality etc. ", thus can realize the further stabilization of the installing condition of door weather strip.
Description of drawings
Fig. 1 is an oblique drawing of schematically representing an automobile in the embodiment.
Fig. 2 is the section-drawing of expression door weather strip.
Fig. 3 is the oblique drawing of expression anchor clamps.
Fig. 4 is the instruction diagram of the installation procedure of expression anchor clamps.
Fig. 5 is the instruction diagram of the installation procedure of expression anchor clamps.
Fig. 6 is the instruction diagram of the installation procedure of expression anchor clamps.
Fig. 7 is an oblique drawing of schematically representing to insert the leading section of unit.
Fig. 8 is the section-drawing of the door weather strip in other embodiments of expression.
The specific embodiment
Below, with reference to embodiment of description of drawings.As shown in Figure 1, on being formed at, arrangements for automotive doors can being set with opening and closing (being the Qianmen in the drawings: following abbreviating as " car door 3 "), door weather strip 5 is installed at the circumference of car door 3 as the car door opening 2 on the car body of the automobile 1 of vehicle.Door weather strip 5, its roughly whole length direction is made of 1 extrusion forming body, and this extrusion forming body is formed by single lead screw ex truding briquetting machine, is ring-type by extrusion forming body length direction both ends are formed by connecting.In addition, also the extrusion forming body of a plurality of section shapes can be linked by forming part be 1 ring-type to door weather strip 5.
As shown in Figure 2, door weather strip 5 has: base portion 11 is installed, and it is with roughly the portion that is mounted 8 of C font is chimeric along the section of the periphery setting of door lock striker plate 7; And sealing 12, it extends to car door 3 peripheral direction from base portion 11 is installed.In the present embodiment, aforementioned sealing 12 has hollow bulb 12a (hollow sealing portion) in inside.
In addition, base portion 11 being installed has: basal part 13; Car inside side walls portion 14 and car outside side wall portion 15, they extend to the car door peripheral direction from this basal part 13; And divider wall parts 16, it links above-mentioned car inside side walls portion 14 and car outside side wall portion 15, simultaneously with isolated between aforementioned substrates portion 13 and the sealing 12.
And, being provided with auxiliary lip 17 in the present embodiment, it is from outstanding to the car outside near the root in the car outside of sealing 12.The inside face crimping of leading section side that should auxiliary lip 17 and the extendible portion of door lock striker plate 7 (in the part of the peripheral direction extension of the car lateral of door weather strip 5 door lock striker plate 7).And when car door 3 was closed, sealing 12 is out of shape with the periphery crimping of the car door opening 2 of car body, and was sealed between car body and the car door 3 thus.
In the present embodiment, with respect to base portion 11 is installed, along the length direction of door weather strip 5 every predetermined distance adjusting device 21.And,, sealing band 5 is installed in the portion of being mounted 8 by anchor clamps 21 being embedded in the mounting hole 22 that forms in the portion of being mounted 8.In addition, the basal part 13 that base portion 11 is installed is embedded as the section that is mounted portion 8 inboard of the location division of C font roughly, thereby door weather strip 5 is installed on the car door 3.
, the structure of anchor clamps 21 is described here, anchor clamps 21 are made of synthetic resin such as polyoxyethylene methylene and polyamide, shown in Fig. 3 waits, have: engagement section 31, and it is embedded in the mounting hole 22 that forms in the portion of being mounted 8 and engages; And fastener 41, it ends with installation base portion 11 (being divider wall parts 16 in the present embodiment) card.
Shown in Fig. 3 waited, fastener 41 integral body formed roughly T word shape, and it has: columned hooking sheet portion 42, and it is to extending with the direction of the bearing of trend quadrature of axial region 32; And columned connecting part 43, it links the length direction central portion of hooking sheet portion 42 and the central portion of umbrella portion 33.
Be installed under the installing condition of installing on the base portion 11 at anchor clamps 21, hooking sheet portion 42 is positioned at hollow bulb 12a, clamping divider wall parts 16 and basal part 13 between hooking sheet portion 42 and umbrella portion 33.In addition, connecting part 43 has pliability, in the present embodiment, can with fastener 41 with respect to the bearing of trend of axial region 32 tilt about about 90 degree (until with the bearing of trend almost parallel of axial region 32), and, can utilize the elastic force of self roughly to restore to original state from this state.
In addition, when being installed in anchor clamps 21 on the door weather strip 5, for example as shown in Figure 7, using and insert unit (insertion device), this insertion unit has: roughly barrel-contoured insertion pin 51, and it makes hooking sheet portion 42 insert interior all sides; And push rod 55 (pushing unit), it can slide along the length direction that inserts pin 51 in interior all sides of inserting pin 51.Inserting on the pin 51, forming the slit 53 that connecting part 43 is inserted along its length, the width of slit 53 is bigger than the diameter of connecting part 43, and littler than the diameter of hooking sheet portion 42.Thus, under the state that hooking sheet portion 42 is arranged on interior all sides of inserting pin 51, anchor clamps 21 are slided along the length direction that inserts pin 51, can prevent that hooking sheet portion 42 from extracting from slit 53 simultaneously.
In addition, the leading section that inserts pin 51 is sharp-pointed as pin, even be not pre-formed peristome etc. on the installation base portion 11 of door weather strip 5, also can this leading section be pierced through by this leading section is pushed to base portion 11 is installed.
As installation steps, at first as shown in Figure 4, hooking sheet portion 42 is arranged on interior all sides of inserting pin 51, generally perpendicularly thrust with respect to the bottom surface of basal part 13 inserting pin 51.
And as shown in Figure 5, will insert pin 51 and pierce through basal part 13 and divider wall parts 16 fully, and after making the leading section (being formed at the peristome on the leading section that inserts pin 51) that inserts pin 51 be positioned at hollow bulb 12a, push rod 55 be slided to the front of inserting pin 51.Thus, hooking sheet portion 42 is pushed pressure bar 55 pushings, is extruded from the leading section that inserts pin 51.In this action midway, umbrella portion 33 contacts with basal part 13, but because connecting part 43 or umbrella portion 33 tracing ability ground are crooked, therefore can further push rod 55 be pushed into the inside, thereby hooking sheet portion 42 integral body can be urged to the inboard of hollow bulb 12a from the front end that inserts pin 51.
Then, as shown in Figure 6, after hooking sheet portion 42 is released from the front end that inserts pin 51, from wall part 16 and basal part 13, will insert pin 51 and extract.Thus, hooking sheet portion 42 stays the inboard of hollow bulb 12a, and the surface card of the hollow bulb 12a side of this hooking sheet portion 42 and divider wall parts 16 ends.
At door weather strip 5 to being mounted under the state that portion 8 installs the portion that is mounted 8 of clamping mounting hole 22 peripheries between the leading section (stage portion 36) of umbrella portion 33 and supporting blade portion 34.In addition, because jut 35 is positioned at all sides of mounting hole 22 and stage portion 36 engages with the circumference of mounting hole 22, so can prevent to embed the offset of the anchor clamps 21 and then the door weather strip 5 of mounting hole 22.In addition, utilize the existence of umbrella portion 33, can seal the circumference of mounting hole 22, can prevent that simultaneously anchor clamps 21 from submerging too far in the basal part 13 and make engagement section 31 be difficult to embed in the patchhole 22.
In addition, the door weather strip 5 in the present embodiment is made of EPDM (ethylene-propylene-diene copolymer) expanded cellular rubber material.But, install base portion 11 (being basal part 13, two side portion 14,15 and divider wall parts 16) by proportion more than or equal to 0.2 less than 0.45 and low drawing stress (JIS K6251) constitute more than or equal to the expanded cellular rubber material of 200kPa, sealing 12 and auxiliary lip 17 by proportion be less than or equal to more than or equal to 0.45 1.0 and low drawing stress the expanded cellular rubber material less than 200kPa constitutes more than or equal to 120kPa, that is, make the material stiffness expanded cellular rubber material bigger that base portion 11 is installed than the material stiffness of sealing 12.
More particularly, the low drawing stress that constitutes the material that base portion 11 is installed is 230kPa, and is relative with it, and the low drawing stress that constitutes the material of sealing 12 and auxiliary lip 17 is 130kPa.In addition, as the low drawing stress of the sponge material that constitutes sealing 12 and auxiliary lip 17, more preferably greater than or equal 120kPa and less than 180kPa, further be preferably greater than or equal 120kPa and less than 150kPa.
In addition, in the present embodiment, by in constituting the material that base portion 11 is installed, with respect to the rubber of 100 weight portions, the polyolefin resin (for example poly-vinyl resin) of mixed 5 weight portions, thus the low drawing stress that base portion 11 will be installed is increased to 230kPa.
In addition, in the present embodiment, making the proportion that base portion 11 is installed is 0.3, littler than the proportion 0.55 of sealing 12 and auxiliary lip 17.If from the weight-saving viewpoint, then preferably improve frothing percentage so that install the proportion of base portion 11 become littler by 0.2, if but like this,, must mix more poly-vinyl resin then in order to ensure material stiffness, correspondingly percentage elongation descends.Therefore in the present embodiment, considering the percentage elongation of material and make proportion is 0.3.
In addition,, be preferably greater than or equal 0.45 and be less than or equal to 0.8, further be preferably greater than or equal 0.45 and be less than or equal to 0.6 as the proportion of sealing 12 and auxiliary lip 17.
In addition, in the expanded cellular rubber material of sealing 12 and auxiliary lip 17, unmixed polyolefin resin.Therefore, even its proportion is higher slightly than base portion 11 is installed, it is too high that material stiffness can not become yet, and is rich in pliability.
As mentioned above, according to present embodiment, because the material stiffness (low drawing stress is 230kPa) that base portion 11 is installed is bigger than the material stiffness (low drawing stress is 130kPa) of sealing 12, therefore under the installing condition of door weather strip 5, base portion 11 is installed can be out of shape.Therefore, can realize the stabilization of installing condition.On the other hand, because the material stiffness of sealing 12 is less, therefore under car door 3 closing state, excellent performance is followed in the distortion with the periphery crimping of car door opening 2 time.Its result realizes the raising of leak tightness.
And,, therefore can realize lightweight as a whole because installation base portion 11 and sealing 12 constitute by the expanded cellular rubber material.In addition, for base portion 11 is installed, though the lower drawing stress 230kPa of the material stiffness of base portion 11 is installed, but because it is made of the expanded cellular rubber material, therefore compare with situation about constituting by closely knit elastomeric material, be imbued with flexibility, its result closes the situation that load increases in the time of can being suppressed at car door 3 and closing.
In addition, in the present embodiment, the proportion of the installation base portion 11 that material stiffness is bigger is 0.3, and is littler than the proportion 0.55 of sealing 12.In the present invention, make the proportion of sealing 12 be less than or equal to 1.0 more than or equal to 0.45, on the other hand, make base portion 11 is installed proportion more than or equal to 0.2 less than 0.45.Its result can realize as the remarkable lightweight of door weather strip 5 single-pieces.
In addition, in the present embodiment,, the proportion that base portion 11 is installed is reduced, material stiffness is diminished, can't realize installing the effect of base portion 11 but merely increase the foaming ratio by increasing the foaming ratio.On this point, in the present embodiment, in base portion 11 is installed,, mix the poly-vinyl resin of 5 weight portions with respect to the rubber of 100 weight portions, by the existence of this resin, material stiffness is increased.In addition, base portion 11 is installed is compared, not too require the elastic recovery performance with sealing 12.Therefore, even because of the mix polyethylene resin causes producing a little " elastic force weakens ", can not produce special obstruction as the effect that base portion 11 is installed yet.
And, in the present embodiment,, door weather strip 5 is installed in the portion that is mounted 8 of car door 3 via these anchor clamps 21 in that adjusting device 21 on the base portion 11 is installed.The anchor clamps 21 of present embodiment are sent to hollow bulb 12a by the interior all sides that make hooking sheet portion 42 pass the insertion pin 51 that basad 13 and divider wall parts 16 thrust, and are installed on the wall part 16.Thus, can omit for anchor clamps being installed on the door weather strip and wall thickness that base portion 11 will be installed cuts or skiving and form the operation of peristome.Thus, can avoid producing the processing bits together, can save the man-hour and the device (suction means etc.) that are used to remove the processing bits with the formation of aforementioned peristome.Its result can realize the raising of manufacturing operation and the raising of quality etc.In addition, utilize an operation that anchor clamps 21 are installed on the installation base portion 11 owing to can be described as, therefore compare with following prior art, can realize the raising of operating efficiency, that is, prior art must have the operation that forms the operation of peristome in advance and make anchor clamps 21 insertion peristomes on installation base portion 11.
State effect in realization on the other hand, because the hooking sheet portion 42 and the connecting part 43 of anchor clamps 21, it constitutes must be more tiny, therefore might influence the stability of the installing condition of anchor clamps.For this point, be 230kPa owing to the rigidity that base portion 11 (basal part 13 and wall part 16) is installed is increased hang down drawing stress, even so hooking sheet portion 42 and connecting part 43 more tiny, also can guarantee the stability of the installing condition of anchor clamps 21.
In addition, be not limited to the record content of above-mentioned embodiment, for example also can implement as following.Certainly, not illustrative other application examples, modification below are also certainly.
(a) in the above-described embodiment, as sealing, only with sealing 12 with hollow bulb 12a as object.Relative with it, as shown in Figure 8, also can be embodied as the door weather strip of the type of sealing lip 18 with the car outside that is positioned at hollow bulb 12.In the case, constitute sealing by sealing 12 with hollow bulb 12a and sealing lip 18.
(b) in the above-described embodiment, as auxiliary lip 17, illustration near the root in the car of sealing 12 outside to the outstanding situation in the car outside, but also can have the auxiliary lip that extends from other positions.For example, as shown in Figure 8, also can have the auxiliary lip 19a that extends midway from sealing lip 18, or from the auxiliary lip 19b that base portion 11 extends is installed.
(c) must not use the anchor clamps 21 shown in the above-mentioned embodiment.Therefore, for example shown in Figure 8, the common anchor clamps 61 that also can utilize prior art to use are installed door weather strip 5.
(d) in addition,, must shown in above-mentioned embodiment, not end, for example can end adjusting device 21 with basal part 13 cards yet by hooking sheet portion 42 by wall part 16 cards as anchor clamps 21.
(e) in the above-described embodiment, as to being mounted the mode that portion 8 installs, illustration utilize the situation of anchor clamps 21, as other example illustrations with the section chimeric situation in location division of C word shape roughly, but as shown in Figure 8, can be not yet via the section location division of C word shape roughly, and utilize common anchor clamps 61 or Acrylic Foam Tape to be installed on all wall surface 7a of door lock striker plate 7.
(f) in the above-described embodiment, as making the material stiffness that base portion 11 is installed be the method for low drawing stress more than or equal to 200kPa, exemplified the example that mixes polyolefin resin, but as making material stiffness is the additive method of low drawing stress more than or equal to 200kPa, can increase by the combined amount that makes the alkadiene in the EPDM expanded cellular rubber material that base portion is installed, when the vulcanization of rubber, improve its crosslink density and realize.Specifically, making the alkadiene use level in EPDM rubber 100 weight portions, is under the situation of 4.5 weight portions in sealing, in base portion is installed, with 2 times of this value promptly 9.0 weight portions cooperate, thereby make low drawing stress more than or equal to 200kPa.
(g) in addition, as making the material stiffness that base portion 11 is installed be the method for low drawing stress, also can combine and realize by making in the above-described embodiment mixing polyolefin resin and above-mentioned raising crosslink density more than or equal to 200kPa.
(h) in the above-described embodiment, be embodied as the door weather strip 5 of driver door, but the position of the car door that is mounted there is no any qualification, for example also can be embodied as the door weather strip that is installed on the tail gate.
Claims (6)
1. door weather strip, it has: base portion is installed, and it is installed on being mounted in the portion of vehicle door periphery; And sealing, it extends to the car door peripheral direction from aforementioned installation base portion, under the state of closing of the door, and with the car door opening periphery crimping of vehicle body,
It is characterized in that,
Aforementioned installation base portion, by proportion more than or equal to 0.2 less than 0.45 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 200kPa,
Aforementioned sealing, by proportion be less than or equal to more than or equal to 0.45 1.0 and low drawing stress constitute more than or equal to the EPDM expanded cellular rubber material of 120kPa,
Thereby, make the proportion of aforementioned installation base portion littler than the proportion of aforementioned sealing, make the material stiffness of aforementioned installation base portion bigger than the material stiffness of aforementioned sealing.
2. door weather strip according to claim 1 is characterized in that,
Aforementioned installation base portion has: basal part; Car inside side walls portion and car outside side wall portion, they extend to the car door peripheral direction from aforementioned basal part; And divider wall parts, it links aforementioned car inside side walls portion and car outside side wall portion, simultaneously with isolated between aforementioned substrates portion and the aforementioned sealing,
The material stiffness of aforementioned substrates portion, car inboard and car outside side wall portion and divider wall parts is bigger than the material stiffness of aforementioned sealing.
3. door weather strip according to claim 1 and 2 is characterized in that,
Aforementioned sealing has the hollow sealing portion that has hollow bulb in inside,
The material stiffness of aforementioned installation base portion is bigger than the material stiffness of aforementioned hollow sealing portion.
4. door weather strip according to claim 3 is characterized in that,
Aforementioned sealing also has sealing lip, and the sealing lip is compared with aforementioned hollow sealing portion, is positioned at the car outside,
The material stiffness of aforementioned installation base portion is bigger than the material stiffness of aforementioned sealing lip.
5. door weather strip according to claim 1 and 2 is characterized in that,
Aforementioned installation base portion is made of the expanded cellular rubber material that has mixed polyolefin resin.
6. door weather strip according to claim 1 and 2 is characterized in that,
The EPDM expanded cellular rubber material of aforementioned installation base portion, combined amount by making the alkadiene in the rubber is more than the combined amount in the sealing, when the EPDM of aforementioned installation base portion expanded cellular rubber material vulcanizes, make its crosslink density be higher than the crosslink density of aforementioned sealing element, thereby the low drawing stress of EPDM expanded cellular rubber material that makes aforementioned installation base portion is more than or equal to 200kPa.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007253240 | 2007-09-28 | ||
| JP2007253240 | 2007-09-28 | ||
| JP2008197616 | 2008-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101396958A true CN101396958A (en) | 2009-04-01 |
Family
ID=40515885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101688460A Pending CN101396958A (en) | 2007-09-28 | 2008-09-28 | Door weatherstrip |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2009096455A (en) |
| CN (1) | CN101396958A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634216B (en) * | 2009-08-12 | 2011-12-28 | 浙江兴宇汽车零部件有限公司 | Nanometer modified environment-friendly double-color sealing strip |
| CN108372774A (en) * | 2017-02-01 | 2018-08-07 | 西川橡胶工业股份有限公司 | Sealing strip |
| CN110114548A (en) * | 2016-12-27 | 2019-08-09 | 康塔弹力产品有限公司 | A kind of Novel gasket structure |
| CN111094809A (en) * | 2017-11-20 | 2020-05-01 | 宝马股份公司 | Arrangement and method for producing a component assembly |
| CN114517831A (en) * | 2020-11-19 | 2022-05-20 | 日本电产三协（浙江）有限公司 | Sealing structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011183935A (en) | 2010-03-09 | 2011-09-22 | Toyoda Gosei Co Ltd | Door weather strip |
-
2008
- 2008-07-31 JP JP2008197616A patent/JP2009096455A/en active Pending
- 2008-09-28 CN CNA2008101688460A patent/CN101396958A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634216B (en) * | 2009-08-12 | 2011-12-28 | 浙江兴宇汽车零部件有限公司 | Nanometer modified environment-friendly double-color sealing strip |
| CN110114548A (en) * | 2016-12-27 | 2019-08-09 | 康塔弹力产品有限公司 | A kind of Novel gasket structure |
| CN108372774A (en) * | 2017-02-01 | 2018-08-07 | 西川橡胶工业股份有限公司 | Sealing strip |
| CN111094809A (en) * | 2017-11-20 | 2020-05-01 | 宝马股份公司 | Arrangement and method for producing a component assembly |
| CN114517831A (en) * | 2020-11-19 | 2022-05-20 | 日本电产三协（浙江）有限公司 | Sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009096455A (en) | 2009-05-07 |
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Open date: 20090401 |