CN104061273A - Dust Cover Combination Body - Google Patents
Dust Cover Combination Body Download PDFInfo
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- CN104061273A CN104061273A CN201410083767.5A CN201410083767A CN104061273A CN 104061273 A CN104061273 A CN 104061273A CN 201410083767 A CN201410083767 A CN 201410083767A CN 104061273 A CN104061273 A CN 104061273A
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- Prior art keywords
- dust
- proof cover
- separator
- upside
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- Diaphragms And Bellows (AREA)
- Sealing Devices (AREA)
- Fluid-Damping Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a dust cover combination body with a novel structure. Damage to the dust cover can be prevented due to the light and compact structure, so durableness of the dust cover can be improved. A snap cylinder part (28) is arranged over an axis direction of a rippled cylinder part (18) of the dust cover (14) made from resin; a snapping groove (32) and a plurality of insertion grooves (40) are formed in the snap cylinder part; the snapping groove opens towards the periphery of the snap cylinder part and circumferentially extends; the plurality of insertion grooves upwardly extend from the snapping groove; one the other hand, on an upper side isolation member (16), there is provided a snapping fixing protrusion part (68) protruding toward the internal periphery side and made from material harder than the upper side isolation member (16); the snap cylinder part of the dust cover is inserted into the upper side isolation member; the snapping fixing protruding part inserted into the snapping groove via the insertion grooves is fixed to the snapping groove in the axis direction when the dust cover rotates relatively to the upper side isolation member; and the upper end part of the dust cover is assembled onto the upper side isolation member, so the dust cover is supported.
Description
Technical field
The present invention relates to be assemblied in the dust-proof cover of suspension fork mechanism and the dust-proof cover assemblying body of upside separator (upperinsulator) a kind of comprising.
Background technique
, be known in the suspension fork mechanism of automobile all the time, be coated vibration damper piston rod mode overcoat install dust-proof cover, and, be known in the upside separator helical spring of suspension fork mechanism being supported upper end.For example, in TOHKEMY 2003-72338 communique (patent documentation 1), proposed to be integrally formed with rubber elastomer the dust-proof cover assemblying body that dust-proof cover and upside separator form.
In addition, dust-proof cover, except the only upper end portion shown in patent documentation 1 is assemblied in the structure of piston rod, in order to prevent that foreign matter from entering from below, also adopts the structure that upper end portion is assemblied in to piston rod and underpart is assemblied in to cylinder.In this case, because dust-proof cover is subject to the tension load of axial direction, therefore, in the dust-proof cover forming with rubber elastomer, may cause durability inadequate.Therefore, the disclosed plastic dust-proof cover such as employing TOHKEMY 2007-32732 communique (patent documentation 2) have also been studied.Plastic dust-proof cover like this due to the upside separator of rubber system be independent, therefore, upper end portion is fixed on accessory, the maintenance accessory of Anti-knocking glue (bump stopper) etc. of on-deformable upper side bolsters.
But, if dust-proof cover is fixed on to above-mentioned accessory, accessory be disposed in upside separator above time, need to make this accessory to extend to the below of upside separator, maximization, the weight increase etc. of axial direction size can become problem.In addition,, in the time that vibration damper significantly shrinks along axial direction under the effect of the input of large load, dust-proof cover may be clamped between accessory and cylinder and sustain damage.
Patent documentation 1: TOHKEMY 2003-72338 communique
Patent documentation 2: TOHKEMY 2007-32732 communique
Summary of the invention
the problem that invention will solve
The present invention completes taking above-mentioned situation as background, and its problem that will solve is, a kind of novel dust-proof cover assemblying body of constructing is provided, thereby can prevent that dust-proof cover damage from seeking to improve durability with light weight and compact structure.
for the scheme of dealing with problems
Below, be recited as the technological scheme of the present invention that solves above-mentioned problem and complete.In addition, the constituting component adopting in following each technological scheme of recording can adopt combination arbitrarily under possible prerequisite.
; the first technological scheme of the present invention is a kind of dust-proof cover assemblying body; it comprises the dust-proof cover of tubular and the upside separator of rubber system, and the two end part of this dust-proof cover are supported by the piston rod of the vibration damper for forming suspension fork mechanism and a side of cylinder respectively, and this dust-proof cover is coated at this piston rod; This upside separator supporting is for forming a helical spring end of suspension fork mechanism, it is characterized in that, above-mentioned dust-proof cover adopts resin, there is bellows portion, this bellows portion is provided with peak portion and paddy portion on axial direction, and, between this peak portion and paddy portion, be connected, and, above the axial direction of this bellows portion of this dust-proof cover, be provided with engaging cylinder portion; In cylinder portion, be formed with for this engaging at outer circumferential face opening and along the engagement groove circumferentially extending, and, this engaging with in the perimembranous of cylinder portion, be formed with partly multiple from this engagement groove towards above the insertion groove of extension; On the other hand, on above-mentioned upside separator, use than the material of this upside separator hard and be provided with multiple all side-prominent engaging teats inwardly, by by the above-mentioned engaging of above-mentioned dust-proof cover with inserting in this upside separator in cylinder portion, thereby utilize this dust-proof cover on axial direction, will to be inserted into this engaging teat engaging in above-mentioned engagement groove via the above-mentioned insertion groove of this engaging cylinder portion in this engagement groove with respect to the relative rotation of this upside separator, the upper end portion of this dust-proof cover is assembled on this upside separator and is supported thus.
According to the dust-proof cover assemblying body of the first technological scheme structure according to such, after inserting in upside separator in the upper end portion of dust-proof cover, thereby thereby by make dust-proof cover with respect to upside separator week upwards relatively rotation the outstanding engaging teat of being located at upside separator is inserted into the engagement groove being formed on dust-proof cover on axial direction this engaging teat of engaging.Thus, can simply the upside separator of the resinous dust-proof cover of separate formation and rubber system be assembled in non-bonding mode, thereby form dust-proof cover assemblying body.
In addition,, because engaging teat has adopted than the material of upside separator hard, therefore, can prevent because the distortion of engaging teat self causes it to come off from engagement groove, thereby can stably maintain the assembled state between dust-proof cover and upside separator.
In addition, because dust-proof cover is not the accessory that is assemblied in upper side bolsters etc., but interpolation is installed on upside separator, therefore, can avoid producing the problem such as maximization, the increase of weight on axial direction.
In addition, by the upper end portion of the upside separator yielding support dust-proof cover by rubber system, in the time vibration damper significantly being shunk because of the input of load, can utilize the distortion of upside separator to avoid dust-proof cover to be subject to excessive power effect, therefore, can seek to improve durability.And, can utilize the vibration-isolating effect of upside separator to reduce the noise producing such as to contact with stone etc. because of dilatation, the dust-proof cover of dust-proof cover.
The second technological scheme of the present invention is taking the dust-proof cover assemblying body described in the first technological scheme as basis, wherein, interior circumferential portion at above-mentioned upside separator is provided with ring-type constriction integratedly, this ring-type constriction is used than the material of this upside separator hard and is formed and upwards extend in week complete cycle, and the multiple positions in the perimembranous of this ring-type constriction form above-mentioned engaging teat.
According to the second technological scheme, owing to ring-type constriction, the interior circumferential portion of upside separator having been carried out to complete cycle reinforcement, therefore, can prevent because the distortion of the interior circumferential portion of upside separator causes coming off of dust-proof cover, thereby more advantageously maintain the assembled state between dust-proof cover and upside separator.And, by forming engaging teat in the perimembranous at ring-type constriction, can, in the perimembranous of the interior circumferential portion of upside separator, easily engaging teat be located to the position of regulation.In addition, the interior circumferential portion of ring-type constriction being located at integratedly to upside separator is utilized the situation that dual-color forming etc. is integrally formed except comprising, also comprise and form independently upside separator and ring-type constriction, then by embedding be shaped, the later stage fixes (Japanese: Hou set) and by they integrated situations.
The 3rd technological scheme of the present invention is taking the dust-proof cover assemblying body described in the first technological scheme or the second technological scheme as basis, wherein, in above-mentioned engagement groove, be provided with abutting part, this abutting part by with above-mentioned engaging teat butt, and by this engaging teat engaging during in this engagement groove, limit this mobile terminal of engaging teat in this engagement groove in the relative sense of rotation of above-mentioned dust-proof cover with respect to above-mentioned upside separator.
According to the 3rd technological scheme, because the mobile terminal of engaging teat in engagement groove is by being defined with abutting part butt, therefore, in the time that dust-proof cover is assembled them with respect to the relative rotation of upside separator, can make engaging teat be positioned at engagement groove, and can from engagement groove, not pass.Therefore, can utilize the engaging on axial direction of engaging teat and engagement groove easily to realize the assembled state between dust-proof cover and upside separator.
The 4th technological scheme of the present invention is taking the dust-proof cover assemblying body described in the arbitrary technological scheme in the first technological scheme～three technological scheme as basis, wherein, in this engagement groove, be provided with and cross teat, when above-mentioned dust-proof cover being rotated relatively in above-mentioned engagement groove with respect to above-mentioned upside separator the engaging of above-mentioned engaging teat, this engaging teat can be crossed this and cross teat in the situation that being subject to resistance.
According to the 4th technological scheme, after dust-proof cover and upside separator are assembled, the restriction of the resistance of the movement of engaging teat in engagement groove when being subject to crossing teat, therefore, can limit dust-proof cover with respect to upside separator relative rotation of direction towards the opposite direction when they are assembled, thereby can prevent that dust-proof cover from coming off from upside separator.
And the resistance that when energy basis is crossed teat, engaging teat is subject to has been inserted into the situation of the assigned position in engagement groove with feel assurance engaging teat, can prevent the assembly failure between dust-proof cover and upside separator.
The 5th technological scheme of the present invention is taking the dust-proof cover assemblying body described in the arbitrary technological scheme in the first technological scheme～four technological scheme as basis, wherein, in the perimembranous of above-mentioned dust-proof cover, be formed with multiple above-mentioned engagement grooves with cutting state, near respectively cutting apart the end of circumferential phase the same side of engagement groove, these form above-mentioned insertion groove, and, the above-mentioned engaging teat of above-mentioned upside separator is provided with multiple, and the plurality of above-mentioned engaging teat is on the circumferential position corresponding with each this insertion groove.
According to the 5th technological scheme, due to engaging teat in perimembranous dispersedly at multiple positions along axial direction engaging in engagement groove, therefore, can in perimembranous, balance well dust-proof cover and upside separator be assembled.
the effect of invention
According to the present invention, by by the engaging of dust-proof cover with inserting in upside separator in cylinder portion, and make that dust-proof cover is relative with upside separator to be rotated, and the engaging teat of upside separator is inserted in the engagement groove of dust-proof cover, thus on axial direction this engaging teat of engaging.Thus, can resinous dust-proof cover be assembled on the upside separator of rubber system simply, and, because the upper end portion of dust-proof cover is loaded on upside separator with interpolation state group, therefore, also avoid the maximization of axial direction size.
In addition, because dust-proof cover is assemblied in the upside separator of rubber system, therefore, can utilize the resiliently deformable of upside separator to relax the compressive force that acts on the axial direction on dust-proof cover when vibration damper significantly shrinks, can seek to improve durability.And, can utilize the buffer function of upside separator to absorb or reduce dust-proof cover when flexible, the noise that produces during with the butt such as stone etc.
Brief description of the drawings
Fig. 1 is the state representation that the is installed on suspension fork mechanism longitudinal section as the dust-proof cover assemblying body of a technological scheme of the present invention.
Fig. 2 is the stereogram of the dust-proof cover assemblying body of presentation graphs 1.
Fig. 3 is the longitudinal section of the dust-proof cover assemblying body shown in Fig. 2.
Fig. 4 is the plan view of the dust-proof cover assemblying body shown in Fig. 2.
Fig. 5 is the stereogram of the dust-proof cover of the dust-proof cover assemblying body shown in pie graph 2.
Fig. 6 is the plan view of the dust-proof cover shown in Fig. 5.
Fig. 7 is the VII-VII sectional view of Fig. 6.
Fig. 8 is the VIII-VIII sectional view of Fig. 7.
Fig. 9 is the plan view of the upside separator of the dust-proof cover assemblying body shown in pie graph 2.
Figure 10 is the X-X sectional view of Fig. 9.
Figure 11 is the longitudinal section of the major component of the upside separator shown in Watch with magnifier diagram 9.
Figure 12 is the longitudinal section of another major component of the upside separator shown in Watch with magnifier diagram 9.
Figure 13 is the longitudinal section of the decomposing state before the assembling of the upside separator shown in the dust-proof cover shown in presentation graphs 7 and Figure 10, is the XIII-XIII sectional view of Figure 14.
Figure 14 is the plan view of the decomposing state shown in Figure 13.
description of reference numerals
10: dust-proof cover assemblying body; 12: suspension fork mechanism; 14: dust-proof cover; 16: upside separator; 18: bellows portion; 20: peak portion; 22: large space between muscles portion (paddy portion); 24: two-story valley portion (paddy portion); 28: cylinder portion for engaging; 32: engagement groove; 36: abutting part; 38: cross teat; 40: insertion groove; 66: ring-type constriction; 68: engaging teat; 70: vibration damper; 72: piston rod; 74: helical spring; 76: cylinder.
Embodiment
Below, with reference to the accompanying drawings of embodiments of the present invention.
Fig. 1 is to be installed to state representation on the suspension fork mechanism 12 of the automobile dust-proof cover assemblying body 10 as one embodiment of the present invention.As shown in Figure 2 to 4, dust-proof cover assemblying body 10 comprises dust-proof cover 14 and upside separator 16.In addition, in the following description, above-below direction refers to the above-below direction in Fig. 1.
More specifically, dust-proof cover 14 entirety are formed as the tubular of thin-walled, are formed by synthetic resin.The synthetic resin that forms dust-proof cover 14 is not particularly limited, but in the present embodiment, adopted and for example in the polypropylene as thermoplastic resin (PP), disperseed to be mixed with the material that ethylene propylene rubber (EPMD) forms, this is because its weatherability, formability etc. are outstanding.Particularly, in the time forming dust-proof cover 14 with thermoplastic resin, the various thermoplastic and high-elastics such as such as polyolefin resin, polyamide-based resin, polyvinyl chloride resin, polyester resin, polyurethanes resin, styrene resin, olefine kind resin all can adopt, wherein, polyolefin resin is polypropylene, polyethylene etc.In addition, as the mould-forming method of dust-proof cover 14, preferably adopt blow molding, but also can adopt injection molded.
In addition, dust-proof cover 14 has bellows portion 18 at the intermediate portion of axial direction.Bellows portion 18 is provided with the structure that multiple peak portion 20 and multiple paddy portion 22,24 form, wherein, this peak portion 20 and paddy portion 22,24 alternately arrange from top to bottom on axial direction, between this peak portion and paddy portion, be connected, peak portion 20 is with continuous at complete cycle in the V word cross section of the side-prominent roughly traverse of periphery, and paddy portion 22,24 is continuous at complete cycle with the V word cross section of the roughly traverse in outer circumferential side depression.In addition, be formed with respectively the two-story valley portion 24 that large space between muscles portion 22 and depth dimensions are less than the depth dimensions of large space between muscles portion 22 in the both sides that clip peak portion 20, the interior Zhou Duan of above-mentioned large space between muscles portion 22 and the interior Zhou Duan of two-story valley portion 24 are positioned at the position of staggering diametrically.
In addition, divide at the peripheral end of peak portion 20 the dell portion 26 being formed with at all side openings.Dell portion 26 is continuous at complete cycle with the V word cross section of the roughly traverse in outer circumferential side depression, and it is more shallow that its width is less than width and the bottom of large space between muscles portion 22 and two-story valley portion 24.
And bellows portion 18 can be by changing respectively the angle of interior Zhou Duan of the angle of outer circumference end of peak portion 20 and paddy portion 22, paddy portion 24 and flexible up and down along axial direction.In addition, in the present embodiment, be formed with dell portion 26 at the outer peripheral portion of peak portion 20, guaranteed can be along the flexible length range of axial direction largelyr.In addition, because large space between muscles portion 22, two-story valley portion 24 and dell portion 26 form with the mutually different degree of depth respectively, interior Zhou Duan is positioned at the position of staggering each other diametrically, therefore, avoid the interior Zhou Duan of above-mentioned paddy portion 22, paddy portion 24, paddy portion 26 overlapping on axial direction, reduced the axial direction size under the shrinkage limit state of bellows portion 18.
In addition, above the axial direction of the bellows portion 18 of dust-proof cover 14, be provided with engaging cylinder portion 28.Engaging is general cylindrical shape shape by cylinder portion 28 entirety, and forms the lip part 30 side-prominent towards periphery in underpart, and engaging conjointly arranges with the upper end of bellows portion 18 with cylinder portion 28.
In addition engaging with being formed with engagement groove 32 in cylinder portion 28.Engagement groove 32 is the grooves that upwards extend with the length of regulation at outer circumferential face opening and in week, cuts apart engagement groove setting in engaging with 3 positions in the perimembranous of cylinder portion 28 using cutting state as independent of each other.In the present embodiment, 3 engagement grooves 32,32,32 form with roughly the same shape and approximate same size each other, and engaging with in the perimembranous of cylinder portion 28 along circumferentially with roughly equal interval setting.In addition, with regard to engagement groove 32, the wall portion of its axial direction upside is by forming towards the side-prominent upper wall portions 34 of periphery with the upper end part of cylinder portion 28 in engaging, and the wall portion of its axial direction downside is made up of lip part 30.
Have again, week of engagement groove 32 end of be upwards formed with abutting part 36.Abutting part 36 is with side-prominent towards periphery with the roughly the same size of upper wall portions 34, and on axial direction, downward-extension and axial direction two end part are connected with lip part 30 with upper wall portions 34.Thus, engagement groove 32 its week the end of be upwards the cul-de-sac shape being surrounded by upper wall portions 34, lip part 30 and abutting part 36.
In addition, in engagement groove 32, be formed with and cross teat 38.This crosses teat 38 in week of engagement groove 32 upwards near the end of other end, side-prominent towards periphery from the bottom wall portion of engagement groove 32, downward-extension between upper wall portions 34 and lip part 30.Have again, as shown in Figure 8, cross teat 38 and be less than abutting part 36 towards the side-prominent size of periphery towards the side-prominent size of periphery, it is more shallow that engagement groove 32 is formed as bottom partly in the forming section of crossing teat 38, and, the end of other end upwards do not crossed teat 38 and blocked the week of engagement groove 32, but at all upward openings.In addition, in Fig. 8, show the imaginary circle of the position on the outstanding top that represents abutting part 36 with double dot dash line.
In addition, the week of each engagement groove 32 other end upwards the opening of end be connected with insertion groove 40.Insertion groove 40 is the outer circumferential face opening with cylinder portion 28 in engaging, extends from circumferential another distolateral side upward of engagement groove 32.Have again, insertion groove 40 in the perimembranous of engaging with cylinder portion 28, be formed at week upwards adjacent engagement groove 32, engagement groove 32 circumferentially between, each insertion groove 40 is in engaging formation partly in the perimembranous of cylinder portion 28.
In addition, below bellows portion 18, be formed with chimeric cylinder portion 42.Chimeric cylinder portion 42 is general cylindrical shape shape, is formed with all grooves 44 at inner peripheral surface opening at the intermediate portion of axial direction.In addition, the underpart of chimeric cylinder portion 42 is formed as along with going downward diameter to become gradually large conically shaped portion 46.
In addition, in the perimembranous of chimeric cylinder portion 42, be formed with multiple kinks 48.Kink 48 has chevron side-prominent and all side openings inwardly the cross section towards periphery, roughly extend point-blank along axial direction, be by approximate equality in perimembranous 4 main variant parts 50,50,50,50 arranging and in perimembranous, be located to approximate equality above-mentioned main variant part 50 circumferentially between 4 secondary variant parts 52,52,52,52 form.In addition, main variant part 50 is greater than secondary variant part 52 towards the side-prominent size of periphery towards the side-prominent size of periphery, and the angle of the outstanding tip portion of main variant part 50 is less than the angle of the outstanding tip portion of secondary variant part 52.
On the other hand, as shown in Figure 9, Figure 10, upside separator 16 is rubber elastomers of ring-type, forms from being roughly interior all ends cylindrical portion 56 outstanding towards below of the spring support portion 54 of Circular Plate shape.In addition, cylindrical portion 56 has the setting-in portion 58 of inner flange shape in underpart, interior all ends of setting-in portion 58 be formed with towards above the sealing lip 60 of outstanding tubular.Have again, in setting-in portion 58, be formed with 3 weep holes 62,62,62 of up/down perforation, the barrel portion 64 of the essentially rectangular tubular that the surrounding of each weep hole 62 is integrally formed with sealing lip 60 around.
In addition,, as shown in Figure 11, Figure 12, in the setting-in portion 58 of upside separator 16, be provided with ring-type constriction 66.Ring-type constriction 66 is by forming at the material of interior part hard than comprising the setting-in portion 58 being integrally formed with rubber elastomer, and in the present embodiment, the member of the ring-type being formed by rubber of the synthetic resin with metal, hard, hard etc. forms.In addition, 3 positions in the perimembranous of ring-type constriction 66 are formed with partly respectively towards the outstanding engaging teat 68 of radially inner side.Each engaging teat 68 has the thickness size that can be inserted in engagement groove 32 and can be inserted into axially looks shape and circumferential size in insertion groove 40, and in the perimembranous of ring-type constriction 66, is disposed at and engages the circumferential position corresponding with the insertion groove 40 of cylinder portion 28.And ring-type constriction 66 complete cycle ground are fixed on the underpart of the interior Zhou Duan of setting-in portion 58, and engaging teat 68 is than all side-prominent (with reference to Fig. 9, the Figure 10) inwardly of setting-in portion 58.In addition, ring-type constriction 66 can form independently with respect to setting-in portion 58, by embedding in the time being shaped, mode that the later stage is fixing and be located at integratedly setting-in portion 58, also can form in advance by methods such as such as dual-color formings.
On the upside separator 16 of this structure of employing, assemble dust-proof cover 14.; as shown in Figure 13, Figure 14; so that the engaging teat 68 of upside separator 16 inserts in upside separator 16 at the state of upwards locating with respect to the insertion groove 40 of dust-proof cover 14 in week in by the engaging of dust-proof cover 14 cylinder portion 28, engaging teat 68 is inserted in insertion groove 40 along axial direction.Then, make dust-proof cover 14 with respect to upside separator 16 in circumferentially relatively rotation, engaging teat 68 is inserted in engagement groove 32 from insertion groove 40, thus on axial direction by 68 engagings of engaging teat in engagement groove 32.Thus, as shown in Figure 3, Figure 4, the upper end portion of dust-proof cover 14 is assembled in the inner circumferential side of upside separator 16 and is supported, has formed thus the dust-proof cover assemblying body 10 of present embodiment.
Like this, due to by using as the engaging of dust-proof cover 14 upper end portions with inserting in cylinder portion 28 in the setting-in portion 58 of upside separator 16, and dust-proof cover 14 is rotated relatively with respect to upside separator 16, thereby and engaging teat 68 is inserted in engagement groove 32 to engaging engaging teat 68 on axial direction, therefore, can easily resinous dust-proof cover 14 be assembled in to the upside separator 16 of rubber system.
And, because the engaging teat 68 of being located at upside separator 16 is hard, therefore, prevent that engaging teat 68 from, because self-deformation comes off from engagement groove 32, can stably keep the assembled state between dust-proof cover 14 and upside separator 16.
In addition,, because the engaging at dust-proof cover 14 has the multiple engagement grooves 32 that form with cutting state by decentralized configuration in the perimembranous of cylinder portion 28, therefore, dust-proof cover 14 and upside separator 16 are assembled together well in complete cycle scope inner equilibrium.Particularly, by engagement groove 32 is set in the region more than half cycle in perimembranous dispersedly, prevented that dust-proof cover 14 from tilting with respect to upside separator 16, realized stable bearing state.In addition, in the present embodiment, because approximate equality in perimembranous ground decentralized configuration is multiple engagement grooves 32 of roughly the same shape each other, therefore, dust-proof cover 14 and upside separator 16 are assembled together better in complete cycle scope inner equilibrium, and, when not limiting dust-proof cover 14 and upside separator 16 and assembling towards, assembling operation is easy.
In addition, in the present embodiment, by make engaging teat 68 week upwards with abutting part 36 butts, thereby in the relative sense of rotation with respect to upside separator 16, define the mobile terminal of engaging teat 68 in engagement groove 32 at dust-proof cover 14.Thus, easily engaging teat 68 is positioned between upper wall portions 34 and lip part 30, utilizes the engaging on the axial direction between engaging teat 68 and above-mentioned upper wall portions 34 and lip part 30, dust-proof cover 14 and upside separator 16 are assembled.
Have, when making them relatively rotate in the time that upside separator 16 is assembled dust-proof cover 14, engaging teat 68 along circumferentially crossing on crossing teat 38, is then inserted in engagement groove 32 in the situation that being subject to resistance again.Therefore, resistance that can be when crossing teat 38 with feel hold engaging teat 68 be inserted into abutting part 36 and cross teat 38 circumferentially between situation, realized reliable assembling operation.
Be formed as the dust-proof cover assemblying body 10 of this structure, for example, be assemblied in as shown in Figure 1 the suspension fork mechanism 12 of automobile.That is, the bellows portion 18 of dust-proof cover 14 is coated at piston rod 72 with the form of piston rod 72 of surrounding vibration damper 70, and this vibration damper 70 is for forming suspension fork mechanism 12, and upside separator 16 is with to be arranged on not shown spring seat accessory on piston rod 72 overlapping.In addition, the upper end portion of the helical spring for forming suspension fork mechanism 12 74 is pressed on to the spring support portion 54 of upside separator 16 from below, support the upper end portion of helical spring 74 with upside separator 16, and, utilize the elasticity of helical spring 74 that upside separator 16 is pressed against to spring seat accessory.In addition, the underpart of helical spring 74 is accepted accessory 78 and is supported by being fixed at spring on the cylinder 76 of vibration damper 70.
In addition, being arranged on locking pawl 82 on the cylinder cap 80 that is assemblied in cylinder 76 upper end portions is embedded in all grooves 44 in the chimeric cylinder portion 42 that is formed at dust-proof cover 14 from the opening portion of chimeric cylinder portion 42.Thus, the upper end portion of dust-proof cover 14 is assemblied in piston rod 72 by upside separator 16, and its underpart is assemblied in cylinder 76.
As mentioned above, being installed under the state of suspension fork mechanism 12, in the time that vibration damper 70 significantly shrinks, the state that dust-proof cover 14 shrinks up and down from axial direction sometimes is further subject to the compression force of axial direction.In this case, because the upper end portion of dust-proof cover 14 is assemblied on the upside separator 16 being formed by rubber elastomer, therefore, reduce to act on the compressive force of dust-proof cover 14 towards top resiliently deformable by upside separator 16, can seek to improve the durability of dust-proof cover 14.
And, because the interior all ends complete cycle at upside separator 16 is provided with the ring-type constriction 66 of hard, therefore, in the time of upside separator 16 resiliently deformable, also can keep the shape of interior all ends, maintain the engaging on the axial direction between engaging teat 68 and engagement groove 32.Therefore, can prevent that the dust-proof cover 14 causing because of the distortion of upside separator 16 from coming off, keep the assembled state between dust-proof cover 14 and upside separator 16.
Equally, be subject to axial direction tensile force at dust-proof cover 14 and do the used time, also can utilize the resiliently deformable of upside separator 16 to reduce the tensile force that dust-proof cover 14 is subject to, and, can prevent that the engaging teat 68 causing because of the resiliently deformable of upside separator 16 from coming off from engagement groove 32, keep the assembled state between dust-proof cover 14 and upside separator 16.
In addition, also can expect to utilize the antihunt action of upside separator 16 to reduce or even avoid the impact force that produces by the flexible vibration of following dust-proof cover 14, with the butt of the foreign matter such as stone etc. to transmit to body side.
In addition, the relative rotating force with respect to upside separator 16 that acts on dust-proof cover 14 under the state that is installed on suspension fork mechanism 12 is less than the relative rotating force that acts on dust-proof cover 14 while assembling, therefore, utilize the resistance of crossing teat 38 can limit engaging teat 68 the interior court of engagement groove 32 during with assembling contrary direction move.Thus, the state that can keep dust-proof cover 14 and upside separator 16 to assemble each other, prevents that dust-proof cover 14 from coming off.
Above in detail, embodiments of the present invention have been described in detail, but the present invention is not subject to the restriction of above-mentioned concrete record.For example, the quantity of engagement groove is not particularly limited, and can omit abutting part 36, makes an engagement groove complete cycle and extends, and also engagement groove can be divided into 2 above many.In addition, in the situation that many engagement grooves are set, also can make the shape of these engagement grooves different.In addition, the circumferential lengths of engagement groove does not also limit, as long as can fully obtain the engaging power of axial direction, also can adopt the extremely short engagement groove of circumferential lengths.Have again, also different position up and down that can be on axial direction forms multiple row respectively along the engagement groove circumferentially extending, by inserting respectively engaging teat to above-mentioned multiple row engagement groove, the engaging on axial direction by engaging teat and engagement groove, thus dust-proof cover and upside separator are assembled more firmly.
In addition, abutting part 36 also can be side-prominent towards periphery with the size identical with upper wall portions 34, also can be side-prominent towards periphery with the size larger than upper wall portions 34.In addition, in the time that abutting part is side-prominent towards periphery with the size less than upper wall portions 34, for example, by form abutting part with the outstanding size of crossing teat 38 equal extent, no matter make dust-proof cover 14 relatively rotate towards which direction with respect to upside separator 16, above-mentioned dust-proof cover 14 and upside separator 16 can be assembled.
In addition, be located at and cross teat 38 not necessarily in engagement groove 32, also can omit.
In addition, in the above-described embodiment, exemplified with the structure that multiple engaging teats 68 and ring-type constriction 66 are arranged integratedly, still, also can be so that them are located at setting-in portion 58 by above-mentioned multiple engaging teats 68 structure independent of each other.In addition, multiple engaging teats 68 also can adopt mutually different shape.
In addition, the explanation that the concrete shape of upside separator is not limited, for example, also can omit setting-in portion 58, and engaging teat 68 is set in cylindrical portion 56 and makes it all side-prominent inwardly, also can change the shape of sealing lip 60, or change having or not of sealing lip 60.
In addition, the concrete shape of bellows portion 18 be not limited to there is large space between muscles portion 22, two-story valley portion 24 and dell portion 26, can be also alternately in succession to be provided with the common bellows-shaped that peak portion and paddy portion form.In addition, the concrete shape of chimeric cylinder portion 42 does not also limit, for example, also can omit kink 48.
Claims (5)
1. a dust-proof cover assemblying body (10), it comprises the dust-proof cover (14) of tubular and the upside separator (16) of rubber system, the two end part of this dust-proof cover (14) are supported by the piston rod (72) of the vibration damper for forming suspension fork mechanism (12) (70) and a side of cylinder (76) respectively, and this dust-proof cover (14) is coated at this piston rod (72); This upside separator (16) supporting is used for forming the upper end portion of the helical spring (74) of suspension fork mechanism (12), it is characterized in that,
Above-mentioned dust-proof cover (14) adopts resin, there is bellows portion (18), this bellows portion (18) is provided with the He Gubu of peak portion (20) (22,24) on axial direction, and, between the He Gubu of this peak portion (20) (22,24), be connected, and, be provided with engaging cylinder portion (28) in the axial direction top of this bellows portion (18) of this dust-proof cover (14); In cylinder portion (28) for this engaging, be formed with at outer circumferential face opening and along the engagement groove (32) circumferentially extending, and, in the perimembranous of cylinder portion (28) for this engaging, be formed with partly multiple insertion grooves (40) that extend towards top from this engagement groove (32);
On the other hand, on above-mentioned upside separator (16), use than the material of this upside separator (16) hard and be provided with multiple all side-prominent engaging teats (68) inwardly, by inserting in this upside separator (16) in the cylinder portion for above-mentioned engaging (28) of above-mentioned dust-proof cover (14), utilize this dust-proof cover (14) with respect to this upside separator (16) thus relative rotation the above-mentioned insertion groove (40) via this engaging cylinder portion (28) is inserted into this engaging teat (68) engaging in above-mentioned engagement groove (32) on axial direction in this engagement groove (32), to be assembled into this upside separator (16) upper and supported in the upper end portion of this dust-proof cover (14) thus.
2. dust-proof cover assemblying body according to claim 1 (10), wherein,
Be provided with integratedly ring-type constriction (66) in the interior circumferential portion of above-mentioned upside separator (16), this ring-type constriction (66) is used than the material of this upside separator (16) hard and is formed and upwards extend in week complete cycle, and the multiple positions in the perimembranous of this ring-type constriction (66) form above-mentioned engaging teat (68).
3. dust-proof cover assemblying body according to claim 1 and 2 (10), wherein,
In above-mentioned engagement groove (32), be provided with abutting part (36), this abutting part (36) by with above-mentioned engaging teat (68) butt, and by this engaging teat (68) engaging when this engagement groove (32), limit this mobile terminal of engaging teat (68) in this engagement groove (32) in the relative sense of rotation of above-mentioned dust-proof cover (14) with respect to above-mentioned upside separator (16).
4. according to the dust-proof cover assemblying body (10) described in any one in claim 1～3, wherein,
In this engagement groove (32), be provided with and cross teat (38), when above-mentioned dust-proof cover (14) being rotated relatively in above-mentioned engagement groove (32) with respect to above-mentioned upside separator (16) above-mentioned engaging teat (68) engaging, this engaging teat (68) can be crossed this and cross teat (38) in the situation that being subject to resistance.
5. according to the dust-proof cover assemblying body (10) described in any one in claim 1～4, wherein,
In the perimembranous of above-mentioned dust-proof cover (14), be formed with multiple above-mentioned engagement grooves (32) with cutting state, near respectively cutting apart the end of circumferential phase the same side of engagement groove (32), these form above-mentioned insertion groove (40), and, the above-mentioned engaging teat (68) of above-mentioned upside separator (16) is provided with multiple, and the plurality of above-mentioned engaging teat (68) is on the circumferential position corresponding with each this insertion groove (40).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013059537A JP2014185657A (en) | 2013-03-22 | 2013-03-22 | Dust cover assembly |
| JP2013-059537 | 2013-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104061273A true CN104061273A (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410083767.5A Pending CN104061273A (en) | 2013-03-22 | 2014-03-07 | Dust Cover Combination Body |
Country Status (2)
| Country | Link |
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| JP (1) | JP2014185657A (en) |
| CN (1) | CN104061273A (en) |
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| CN104595409A (en) * | 2014-11-26 | 2015-05-06 | 奇瑞商用车（安徽）有限公司 | Automotive shock absorber dustproof structure and automotive shock absorber with the same |
| CN105546019A (en) * | 2014-10-27 | 2016-05-04 | 东洋橡胶工业株式会社 | Manufacturing device of dust cover and manufacturing method of dust cover |
| CN107143607A (en) * | 2016-03-01 | 2017-09-08 | 住友理工株式会社 | bounce limiter |
| TWI615562B (en) * | 2014-10-27 | 2018-02-21 | Toyo Tire & Rubber Co Ltd | Combination tool of dust cover and combination method of dust cover |
| TWI624607B (en) * | 2014-10-27 | 2018-05-21 | Toyo Tire & Rubber Co Ltd | Combination device of dust cover and combination method of dust cover |
| CN109398339A (en) * | 2018-10-31 | 2019-03-01 | 中车青岛四方车辆研究所有限公司 | Dust-proof sheath |
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| CN111425548A (en) * | 2020-04-07 | 2020-07-17 | 北京汽车集团越野车有限公司 | Traveller assembly structure and car |
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| JP2014185657A (en) | 2014-10-02 |
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Application publication date: 20140924 |