CN105546019A - Manufacturing device of dust cover and manufacturing method of dust cover - Google Patents
Manufacturing device of dust cover and manufacturing method of dust cover Download PDFInfo
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- CN105546019A CN105546019A CN201510703193.1A CN201510703193A CN105546019A CN 105546019 A CN105546019 A CN 105546019A CN 201510703193 A CN201510703193 A CN 201510703193A CN 105546019 A CN105546019 A CN 105546019A
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- head
- shaped member
- ring
- main body
- body cylinder
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- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Sealing Devices (AREA)
- Diaphragms And Bellows (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
[Technical problem] The invention provides a manufacturing device of a dust cover capable of relieving an operation load fixed to an annular part. [Solution means] A support column (33) is inserted into a bag-like body (10), and a bag part (11) covers a head part (34) of a top end of the support column (33). Cylinder bodies (32, 46) enable a support part (48) and the support column (33) to move relative to each other in the axial direction, the bag part (11) is inserted into a spring rubber seat (100), and an inward-inserting end part (4) between a fragile part (20) and a main body cylinder part (2) is fixed to the spring rubber seat (100). The head part (34) or an abutting part (51) swings through springs (40, 50), so the bag part (11) can be inserted into the spring rubber seat (100) easily. Thus the operation load of fixation of the main body cylinder part (2) can be relieved.
Description
Technical field
The present invention relates to the manufacturing installation of dust-proof cover and the manufacture method of dust-proof cover, particularly relate to the manufacturing installation of dust-proof cover and the manufacture method of dust-proof cover that can alleviate the operation burden being fixed to ring-shaped member.
Background technique
Vibration damper in the suspension fork mechanism of automobile is provided with for preventing dust from entering dust-proof cover (such as patent documentation 1) between piston rod and guide rod etc.In the technology disclosed in patent documentation 1, at the axial end portion of the upper fixing cartridge of the ring-shaped member (tube shape metal piece) being installed on car body side, and the mode of the surrounding of surrounding piston rod is provided with dust-proof cover (cartridge).
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Publication becomes 7-239030 publication
Summary of the invention
(1) technical problem that will solve
But, in above-mentioned prior art, owing to fixing the complex operation of dust-proof cover on the ring-shaped member being installed on car body side, therefore there is the problem that this operation burden is larger.
The present invention completes to solve the problem, and its object is to, and provides the manufacturing installation of dust-proof cover and the manufacture method of dust-proof cover that can alleviate the operation burden being fixed to ring-shaped member.
(2) technological scheme
In order to realize this object, the manufacturing installation of the dust-proof cover according to technological scheme 1, manufactures following dust-proof cover: cylindrical body cylinder portion is configured to the piston rod periphery of the vibration damper surrounding vehicle, and main body cylinder portion is combined with the ring-shaped member being arranged on car body side.In main body cylinder portion, bag portion be connected axial end portion, bag portion to be formed with in the circumferential direction compared with main body cylinder portion the frangible portion easily ruptured.In the pocket that the axial end portion in bag portion and main body cylinder portion is formed by connecting, insert pillar, bag portion covers the head that pillar top is arranged.The end face that the abutment be connected with supporting part is configured to the axial side of the ring-shaped member that can insert with the bag portion covering head abuts against.Abutment can swingingly be connected on supporting part by elastic member, or, head can be swingingly connected on pillar.Drive unit makes the relative movement in the axial direction of supporting part and pillar, and bag portion is inserted ring-shaped member, by the interpolation end winding support between frangible portion and main body cylinder portion on ring-shaped member.Because head or abutment are swung by elastic member, when therefore bag portion being inserted ring-shaped member, ring-shaped member or bag portion swing and are easy to insert.Thus, there is the effect that can alleviate operation burden main body cylinder portion being fixed to ring-shaped member.
Manufacturing installation according to technological scheme 2, inserts main body cylinder portion in the inner side of the wall portion being arranged at column circumference.Because the top end of wall portion abuts with the axial end of ring-shaped member, therefore by the top end of wall portion, the location of ring-shaped member relative to bag portion can be carried out.Therefore, on the basis of the effect of technological scheme 1, also have and improve the effect of ring-shaped member relative to the setting accuracy in bag portion.
Manufacturing installation according to technological scheme 3, in wall portion, with the axial length of the bearing surface to top end that make the head abutted from bag portion, to set the position of top end with the inner face in the bag portion abutted from bearing surface to the mode that the axial length of extension is identical.In main body cylinder portion, extension is more outstanding to radial outside than ring-shaped member internal diameter from axial end portion.Its result is, on the basis of the effect of technological scheme 2, by the top end of wall portion, will have the effect be accurately arranged on by ring-shaped member on the position of extension when inserting in ring-shaped member in bag portion.
The manufacture method of the dust-proof cover according to technological scheme 4, to surround the mode of the periphery of the piston rod of the vibration damper of vehicle to configure cylindrical body cylinder portion, manufactures the dust-proof cover that main body cylinder portion is combined with the ring-shaped member being arranged on car body side.By the pocket that preparatory process preparation bag portion is connected with the axial end portion in main body cylinder portion, described bag portion circumferentially forms the frangible portion easily ruptured compared with main body cylinder portion; The bag portion of pocket is made to cover the head being arranged on pillar top by covering process.By fixing engineering, ring-shaped member is relative with the bag portion covering head, and an abutment and ring-shaped member side end face in the axial direction abuts.Make to be pivotably connected the supporting part of abutment or head and pillar relative movement in the axial direction by elastic member, bag portion inserts ring-shaped member, and the interpolation end winding support between frangible portion and main body cylinder portion is on ring-shaped member.By removing engineering, under the state of interpolation end winding support at ring-shaped member, frangible portion rupture, retaining the interpolation end being fixed on described ring-shaped member, removal axial end portion side.Thus, there is the effect same with technological scheme 1.
Accompanying drawing explanation
Fig. 1 is the axial, cross-sectional view of the suspension fork mechanism of the dust-proof cover installing an embodiment of the invention.
Fig. 2 is the stereogram being carried out the pocket processed by the manufacturing installation of the first mode of execution.
Fig. 3 is the schematic diagram of the manufacture method that pocket is described, wherein (a) is the schematic diagram extruding operation representing parison, b (), for representing that gas is blown into the schematic diagram of operation, (c) is the schematic diagram representing the demoulding and last manufacturing procedure.
Fig. 4 is the sectional view of frangible portion.
Fig. 5 is the axial, cross-sectional view of the manufacturing installation of dust-proof cover.
Fig. 6 is the sectional view of the manufacturing installation of VI-VI line along Fig. 5.
Fig. 7 is the sectional view of the manufacturing installation inserting pocket.
Fig. 8 is sectional view pocket being inserted the manufacturing installation in ring-shaped member.
Fig. 9 is the side view of pocket.
Figure 10 is the sectional view of the manufacturing installation that a part for frangible portion is ruptured.
Figure 11 is the sectional view of the manufacturing installation of the complete rupture making frangible portion.
Figure 12 is the sectional view of the manufacturing installation of frangible portion fracture.
Figure 13 is the stereogram being carried out the pocket processed by the manufacturing installation of the second mode of execution.
Figure 14 is the axial, cross-sectional view of manufacturing installation.
Description of reference numerals
1 dust-proof cover
2 main body cylinder portions
4 interpolation ends
5 extensions
10,70 pockets
11 bags of portions
20 frangible portion
30,80 manufacturing installations
32 cylinder bodies (drive unit)
33 pillars
34,81 heads
35 bearing surfaces
40 springs (elastic member)
41 wall portion
42 top ends
46 cylinder bodies (drive unit)
48 supporting parts
50 springs (elastic member)
51 abutment
100 spring-rubber seats (ring-shaped member)
110 vibration dampers
112 piston rods
Embodiment
Below, with reference to accompanying drawing, the preferred embodiment of the present invention is described.First, with reference to Fig. 1, the schematic configuration of the dust-proof cover 1 of the first mode of execution of the present invention is described.Fig. 1 is the axial, cross-sectional view of the suspension fork mechanism of the dust-proof cover 1 being provided with the first mode of execution.Suspension fork mechanism is as lower component: by fixing device (not shown), the upper end of the vibration damper 110 be connected with wheel (not shown) side lower end is connected to vehicle body frame (not shown) side, thus for wheel joltily can be suspended in vehicle body frame by above-below direction.In FIG, for the ease of understanding, omitting the diagram of car body (vehicle body frame) and fixing device, and omitting the diagram of vibration damper 110 and the part of disc spring 113 in axis (Fig. 1 above-below direction).
As shown in Figure 1, in suspension fork mechanism, the underpart (not shown) of disc spring 113 is fixed on the cylinder body 111 of vibration damper 110, between the upper end portion of disc spring 113 and the supporting base of fixing device (not shown), is arranged at intervals with spring-rubber seat 100 (ring-shaped member).By fixing device, the vibration of transmitting to vehicle body frame side via vibration damper 110 from wheel side is reduced, by spring-rubber seat 100, the vibration of being transmitted to vehicle body frame side by disc spring 113 from wheel side is reduced.
It is circular main part 101 that spring-rubber seat 100 possesses being formed as observing from axis (Fig. 1 above-below direction), and the lip part 102 of formation is stretched out from this main part 101 to radial outside, these parts are integrally formed by the rubber-like elastic body with suitable spring constant.In the present embodiment, spring-rubber seat 100 possesses from the inner circumference edge of the axial end side (on the downside of Fig. 1) of main part 101 to radially inner side is circular outstanding protuberance 103.
Dust-proof cover 1 is the thin-walled cartridge for preventing dust from entering vibration damper 110, possesses main body cylinder portion 2, open end 3 and interpolation end 4, and described main body cylinder portion 2 is configured to the periphery of the piston rod 112 surrounding vibration damper 110; Described open end 3 is configured in the peripheral part of cylinder body 111; Described interpolation end 4 is configured in the tip side of piston rod 112, and spring-rubber seat is inserted into the main part 101 of spring-rubber seat 100 simultaneously; These parts are one-body molded.
Main body cylinder portion 2, for guaranteeing that axial elasticity is formed as snake abdomen shape, is formed in the end of axis to the outstanding flange shape extension 5 of radial outside.Extension 5 is for dividing main body cylinder portion 2 and the position of interpolation end 4 in the axial direction, having the external diameter that can abut with the axial end of the main part 101 of spring-rubber seat 100 (Fig. 1 downside).By extension 5, determine the intubating length of interpolation end 4 to the main part 101 of spring-rubber seat 100.
In the present embodiment, dust-proof cover 1 is one-body molded by thermoplastic resin.As thermoplastic resin, ethylene-propylene rubber can be mixed with from the polyolefin resin such as various thermoplasticity highly resilient materials, polypropylene of the polyolefin resin of polypropylene or polyethylene etc., polyamide-based resin, polyvinyl chloride resin, polyester resin, polyurethane based resin, styrene resin etc. and carry out decentralized after material etc. in suitably select.In addition, dust-proof cover 1 can be body formed by rubber elasticity.
Then, with reference to Fig. 2, the pocket 10 used when inserting in the main part 101 of spring-rubber seat 100 in the interpolation end 4 of dust-proof cover 1 is described.Fig. 2 is the stereogram of pocket 10.
As shown in Figure 2, pocket 10 is the formed body that longitudinal end side is formed by connecting with the axial end portion in the main body cylinder portion 2 of open end 3 opposition side than the bag portion 11 of main body cylinder portion 2 undergauge.Bag portion 11 possesses and to be connected with main body cylinder portion 2 (extension 5) and to be formed as roughly cylindric base portion 12, and is connected with base portion 12 and along with the roughly cone shape tip portion 13 of the undergauge gradually towards axial end portion.In the present embodiment, bag portion 11 is formed as the closed hollow shape of axial end portion (top).
Base portion 12 possesses the groove portion 14 (with reference to Fig. 1) be formed as along extension 5 continuous print channel-shaped in the circumferential, and than the peripheral part 16 of main part 101 inner peripheral surface of groove portion 14 more by axial end portion side (tip side) and towards spring-rubber seat 100.In the present embodiment, peripheral part 16 is formed as the circular cone shape along with reducing gradually towards axial end portion (on the upside of Fig. 2) diameter.On base portion 12, be positioned at than the recess 17 of peripheral part 16 closer to axes O place, separate the position that predetermined distance depression is provided with many places (being 16 places in the present embodiment) axisymmetric shape in the circumferential.Recess 17 is observed from the side, is formed as vertically the roughly ellipticity that (Fig. 2 above-below direction) extends.
Tip portion 13 is the bag-shaped position be connected with base portion 12, is formed with protuberance 18 (engaged part) at top.Protuberance 18 is positioned in axes O, is the top surface position that rearwardly (open end 3 side) is outstanding from tip portion 13.Protuberance 18 makes (seeing below) when pocket 10 is shaping.
Pocket 10 is provided with frangible portion 20 at the base portion 12 in bag portion 11.Frangible portion 20 is the position of easy-rupturing compared with main body cylinder portion 2 or tip portion 13, arranges throughout the circumferential along extension 5.In the present embodiment, frangible portion 20 possesses through on the thickness direction of the peripheral part 16 and joint-cutting 21 extended in the circumferential, and be arranged in the circumferential both sides of joint-cutting 21 and be arranged on the joint 22 of recess 17, the sewing needle being formed as a whole extending in the circumference of base portion 12 is poroid.By frangible portion 20 from pocket 10 separation bag portion 11, manufacture dust-proof cover 1 thus.
Then, with reference to Fig. 3, the manufacture method of pocket 10 example is described.In the present embodiment, the situation being manufactured pocket 10 by blow molding method is described.Fig. 3 is the schematic diagram be described the manufacture method of pocket 10, (a) in Fig. 3 is for representing the schematic diagram extruding operation of parison 205, (b) in Fig. 3, for representing that gas is blown into the schematic diagram of operation, (c) in Fig. 3 is the schematic diagram representing the demoulding and last manufacturing procedure.
As shown in (a) in Fig. 3, prepare the forming die 201,202 possessing cavity 203 inner face corresponding with the profile of dust-proof cover 1 for a pair, extruding in operation, extrude as the parison 205 being carried out the shaping material softened by heating in tubular from jet pipe 204, be configured between forming die 201,202.
Next, as shown in (b) in Fig. 3, make forming die 201,202 close to each other, make parison 205 extrusion deformation at upper and lower end, thus the parison 205 in cavity 203 ((a) with reference in Fig. 3) is configured to bag-shaped.Be blown in operation at gas, by using blow needle 206 from forming die 201, the fitting surface at 201 tops is blown into gas to the hollow space of parison 205, makes parison 205 radially dilatancy, extrudes the internal surface to die cavity 203.Thus, specify that the formed body 210 of shape is shaping.
Be cooled to pattern 201,202 and make formed body 210 cooling curing.Then, as shown in (c) in Fig. 3, make blow needle 206 increase, make forming die 201,202 be separated from each other simultaneously and carry out the demoulding, from forming die 201,202, take out formed body 210.The burr (protuberance 18) had because blow needle 206 produces are retained at the top of formed body 210.
In the end in manufacturing procedure, use cutter (not shown) that the axial end side of formed body 210 is cut off (incision) at cutting line A place, thus form open end 3 (with reference to Fig. 2).In addition, use cutter (not shown) to be cut off (forming joint-cutting 21 and joint 22) at cutting line B in the outside of another side of the axis of formed body 210 from radial direction, thus form frangible portion 20 (with reference to Fig. 2).Thus, thin-walled pocket 10 is produced.
With reference to Fig. 4, frangible portion 20 is described.Fig. 4 is the sectional view of the frangible portion 20 vertical with the axes O of pocket 10.As shown in Figure 4, pocket 10 is provided with at peripheral part 16 place than peripheral part 16 more by multiple recesses 17 of axes O direction setting.The axle right angle orientation cross section of recess 17 forms arc-shaped.Depression in the surface amount D from the surface of peripheral part 16 to recess 17 is set as larger than the thickness T of peripheral part 16.Preferably, D=T+ α (but α is the value of the deviation such as thickness or core skew considering peripheral part 16) is set as.Frangible portion 20 is formed with joint-cutting 21 at peripheral part 16, on the other hand, is formed with joint 22 at recess 17.
Frangible portion 20 is formed by formed body 210 (with reference to (c) in Fig. 3) being cut off along cutting line B.Specifically, by using cutter (not shown) circumferentially to cut out otch from the radial outside of formed body 210, thus joint-cutting 21 is formed.Be set as T<C<D by the notch depth C of the cutter by formed body 210 periphery, form joint-cutting 21 and the joint 22 of through peripheral part 16 thus.Its result is, is formed with the frangible portion 20 that the sewing needle of joint-cutting 21 continuous presentation is in the circumferential poroid.
With reference to Fig. 5 and Fig. 6, the manufacturing installation 30 manufacturing dust-proof cover 1 is described.Fig. 5 is the axial, cross-sectional view of the manufacturing installation 30 of dust-proof cover 1, and Fig. 6 is the sectional view of the manufacturing installation 30 of VI-VI line along Fig. 5.In addition, the diagram of a part for cylinder body 32,46 length direction is omitted in Figure 5.
As shown in Figure 5, manufacturing installation 30 is the device for the manufacture of the dust-proof cover 1 in spring-rubber seat 100 (ring-shaped member) combining main body cylinder portion 2, possess the planar platform portion 31 of a support integral, cylinder body 32 (drive unit), pillar 33 (piston rod) and head 34, the top of described cylinder body 32 is upwards exposed from platform portion 31, and is fixed in platform portion 31; Described pillar 33 is arranged on piston (not shown) built-in in cylinder body 32; Described head 34 is arranged on the top of pillar 33.In the present embodiment, cylinder body 32 is the cylinder by pressure work.
The mode that manufacturing installation 30 possesses to surround pillar 33 is arranged on the wall portion 41 in platform portion 31.The top end 42 of wall portion 41 is set in the position lower than head 34.Platform portion 31 erects in the both sides clipping wall portion 41 and arranges pair of side plates 43.Side plate 43 is the elongated member extended in parallel with pillar 33, and the position slightly lower than wall portion 41 top end 42 is provided with intermediate plate 44, and upper end is provided with top board 45.Top board 45 is for the fixing parts exposing the cylinder body 46 (drive unit) on top from top board 45 downwards.In the present embodiment, cylinder body 46 is the cylinder by pressure work.Cylinder body 46 is provided with the piston rod 47 be arranged on built-in piston (not shown).Piston rod 47 is configured to the axis being parallel with pillar 33 and head 34.
Supporting part 48 for being arranged on the circle shape part on piston rod 47 top, be formed centrally wherein through-shaft to circular port portion 49.Three places of supporting part 48 in the circumference of axial end (lower surface) are provided with spring 50 (disc spring), are provided with abutment 51 in the lower end of spring 50.Abutment 51 is and supporting part 48 leaves interval and the circle shape part configured in coaxial, be formed centrally wherein through-shaft to circular port portion 52.Abutment 51 is abut with spring-rubber seat 100 (with reference to Fig. 1), for the parts extruded vertically, and the upper plane of inclination forming the inclination of the lip part 102 corresponding to spring-rubber seat 100 of end face (lower end surface).Supporting part 48 and abutment 51 with pillar 33 and head 34 coaxial on configure.
Pillar 33 is near the head 34 of tip side and the inner side of wall portion 41 is provided with limit stoper 60.Limit stoper 60, via the supporting element (not shown) configured along pillar 33, is arranged in platform portion 31.
As shown in Figure 6, pillar 33 is the metal shaft like parts for head 34 being set to specified altitude, and the length setting of its primary position is roughly the same with the length (freely growing) of the axis in main body cylinder portion 2 (with reference to Fig. 2).In addition, be set smaller than the internal diameter in main body cylinder portion 2 in the size (thickness) in axially vertical cross section with pillar 33.
Head 34 for being arranged on the top of pillar 33, for supporting the position in the bag portion 11 of pocket 10 (with reference to Fig. 2).In the present embodiment, head 34 is by the side of upper narrow circular cone and bearing surface 35, and the synthetic resin member that the side of the lower narrow circular cone crossing with the lower edge of bearing surface 35 and conical surface 36 surround.The angle of the bearing surface 35 that bearing surface 35 is relative with axes O in the cross section containing axes O, is set as identical relative to the angle of axes O with the tip portion 13 of pocket 10.In addition, the external diameter (diameter of the lower edge of bearing surface 35) of head 34 is set smaller than the diameter of the base portion 12 in bag portion 11 rib crossing with tip portion 13.
End on observation, head 34 is formed centrally circular inserting hole 37 (engagement portion) in bearing surface 35, is formed centrally pit 38 in conical surface 36.Inserting bolt 39 in the hole of bottom running through inserting hole 37 and pit 38.Bolt 39 is for being provided with the parts of the spring 40 (disc spring) installed on the top of pillar 33.Head 34 is connected with pillar 33 by spring 40.
Wall portion 41 is for carrying out the metal parts of spring-rubber seat 100 relative to the axially locating of pocket 10 (with reference to Fig. 2).Wall portion 41 is formed as and pillar 33 and the coaxial cylindrical shape of head 34, and its internal diameter is set as the external diameter in the main body cylinder portion 2 being a bit larger tham pocket 10.Wall portion 41 manufacture dust-proof cover 1 time, the top end 42 that the main part 101 that axial end is formed spring-rubber seat 100 abuts.
Limit stoper 60, for possessing drive portion 61, being driven in the device of the opening and closing member 62 (driven joint) of drive portion 61, is carry out spacing device for internal spigot portion 4 (with reference to Fig. 1) when manufacturing dust-proof cover 1.Opening and closing member 62 is that the guiding element (not shown) supported by main body 65 (seeing below) guided, to the metal parts that the radial opening and closing vertical with axes O direction is formed freely, in the present embodiment, three parts are circumferentially arranged around pillar 33.End on observation, each parts are formed as the fan of the central angle with 120 °.The outboard end 63 with arc-shaped profile of opening and closing member 62, is formed as projecting to upper end portion towards radial outside, and along with trend below, expanding inclined-plane 64 is formed in the inner peripheral surface of underpart.
Drive portion 61 is for making opening and closing member 62 to the device of radial opening and closing, has center and runs through the piston 66 having bottom tube-like main body 65, be configured in main body 65 inside of pillar 33 and be arranged on the cam 67 that piston 66 extends to opening and closing member 62 side.Drive portion 61, from gas piping (not shown) to air supply two air chambers formed by main body 65 and piston 66, makes piston 66 and cam 67 move back and forth vertically.Along with cam 67 motion vertically, opening and closing member 62 is to radial motion.
Spring 40 is set as free length, to make the gap can between the upper-end surface 62a and the lower surface (lower edge of conical surface 36) of head 34 of opening and closing member 62 with regulation.Thus, in this interstice coverage, head 34 is connected with pillar 33 swingably by spring 40.In addition, spring 40 can be made to shrink to decline, until head 34 abuts with opening and closing member 62.Under the state that head 34 and opening and closing member 62 (upper-end surface 62a) abut against, top end 42 position (highly) of wall portion 41 is set as the axial length of bearing surface 35 to top end 42 of the head 34 abutted from bag portion 11 (with reference to Fig. 2), identical to the axial length of extension 5 with the internal surface of the tip portion 13 from bag portion 11.
With reference to Fig. 7 to Figure 12, the manufacture method of the dust-proof cover 1 using manufacturing installation 30 is described.Fig. 7 is the sectional view of the manufacturing installation 30 inserting pocket 10, Fig. 8 is sectional view pocket 10 being inserted the manufacturing installation 30 in spring-rubber seat 100, Fig. 9 is the side view of pocket 10, Figure 10 is the sectional view making the post-rift manufacturing installation 30 of a part for frangible portion 20, Figure 11 is the sectional view making the post-rift manufacturing installation 30 of the complete cycle of frangible portion 20, and Figure 12 is the sectional view making the post-rift manufacturing installation 30 of frangible portion 20.In addition, in Fig. 7 to Figure 12, the diagram of pillar 33 and wall portion 41 part in the axial direction (bottom) is omitted.
First, as shown in Figure 7, shrinking the primary position state of pillar 33, and under the state of closing opening and closing member 62, while covering head 34 with pocket 10, pocket 10 is inserted in the inner side to wall portion 41.Now, by inserting hole 37 that protuberance 18 insertion head 34 that formed in bag portion 11 is formed.Then, the main part 101 of spring-rubber seat 100 is covered downward gently the base portion 12 neighbouring (temporarily placing) of pocket 10.In addition, is roughly alignd with the inclination of the end face (lower end surface) of abutment 51 in the direction (true dip direction of lip part 102) covering spring-rubber seat 100.
Then, as can be seen from figures 8 and 9, make cylinder body 46 (with reference to Fig. 5) work extend piston rod 47, move supporting part 48 to head 34 side.After the end face of abutment 51 is abutted with main part 101 end face of spring-rubber seat 100, extend piston rod 47 further, in the main part 101 of spring-rubber seat 100, insert bag portion 11.Because bag portion 11 supports to specified altitude by pillar 33 and head 34, even if therefore pocket 10 is easily out of shape, still guarantee rigidity by head 34, bag portion 11 can be inserted in the main part 101 of spring-rubber seat 100.Consequently, compared to not using manufacturing installation 30 that pocket 10 (bag portion 11) is inserted the situation of spring-rubber seat 100, operation burden can be alleviated.
Base portion 12 is formed the coniform peripheral part 16 being less than tip portion 13 relative to the inclination of axes O.Thus, if peripheral part 16 enters to the axis of main part 101, then the protuberance 103 of spring-rubber seat 100 can gradually to radial outside resiliently deformable.Base portion 12 possesses the contact surface portions 15 be connected with peripheral part 16, and contact surface portions 15 has the external diameter that can contact with the inner peripheral surface of main part 101.Groove portion 14 is provided with owing to caving between contact surface portions 15 and extension 5, if therefore while the extension 5 of pocket 10 is expressed to main part 101, the protuberance 103 of the spring-rubber seat 100 after resiliently deformable restores to the original state to radially inner side and engages with groove portion 14, then restraining spring rubber base 100 movement in the axial direction.In addition, if contact surface portions 15 enters main part 101, then limit pocket 10 movement diametrically.Thus, pocket 10 is fixed on spring-rubber seat 100.
Because abutment 51 is connected with supporting part 48 by many (being 3 in the present embodiment) springs 50, therefore when being pressed into main part 101 to bag portion 11, corresponding main part 101 is relative to the inclination in bag portion 11, and abutment 51 swings relative to supporting part 48.Consequently, while dividing to fall (correction) inclination relative to bag portion 11, main part 101 is pressed into bag portion 11.Thereby, it is possible to effectively main part 101 is embedded in bag portion 11.
To this, when abutment 51 is not swung by spring 50 (when omitting spring 50), sometimes under the state of main part 101 inclination, bag portion 11 is embedded, spring-rubber seat 100 occurs sometimes to be installed bad, or a part for extension 5 (part that intensity is weak) depression.This depression can be prevented according to the present embodiment.
Because abutment 51 is swung relative to supporting part 48 by spring 50, therefore, even if be optionally temporarily placed on pocket 10 by spring-rubber seat 100, the inclination that abutment 51 also corresponds to the spring-rubber seat 100 temporarily placed swings.Because the inclination relative to bag portion 11 is by automatic compensation, main part 101 is pressed into bag portion 11, therefore has nothing to do with the manipulation accuracy be temporarily placed on pocket 10 by spring-rubber seat 100, can prevent to install bad or extension 5 and cave in.Thereby, it is possible to improve the reliability of the quality of dust-proof cover 1.
Because head 34 is connected with pillar 33 swingably by spring 40, therefore, it is possible to correspond to the inclination of the main part 101 of spring-rubber seat 100, adjustment covers the inclination in the bag portion 11 of head 34 automatically.Consequently, while the periphery making circular protuberance 103 inner circumferential with circular base portion 12 is close to, the protuberance 103 of spring-rubber seat 100 can be pressed into equably the position to extension 5.Thereby, it is possible to prevent the defect that spring-rubber seat 100 installs the part depression of bad or extension 5 effectively.
External diameter due to head 34 is set smaller than the internal diameter of base portion 12, therefore between the base portion 12 and head 34 in bag portion 11, forms gap.When inserting base portion 12 to spring-rubber seat 100, because base portion 12 only produces the resiliently deformable of gap corresponding amount, therefore, it is possible to abirritation is in the axial tensile stress of frangible portion 20 (joint 22) to radially inner side.Thus, when inserting bag portion 11 to spring-rubber seat 100, can prevent frangible portion 20 from rupturing.
Tip portion 13 due to bag portion 11 is formed as roughly coniform, therefore be formed as compared with roughly cylindric situation with the end with tip portion 13, the rigidity of the tip portion 13 in bag portion 11 can be improved, the volume of the material (being moldable resin in the present embodiment) forming bag portion 11 can be cut down simultaneously.Consequently, bag portion 11 can be made to be easy to insert in spring-rubber seat 100, the material forming the bag portion 11 be separated when forming dust-proof cover 1 can be cut down simultaneously.In addition, because bag portion 11 (base portion 12 and tip portion 13) to be formed as along with tending to axial end portion from main body cylinder portion 2 narrow shape before attenuating, therefore, it is possible to be easy to cover spring-rubber seat 100 to bag portion 11.
Spring 40 corresponds to the press-in of spring-rubber seat 100, and extrude to bag portion 11 and shrink gradually, final head 34 is pressed in opening and closing member 62.In this condition, the position (highly) of the top end 42 of wall portion 41 is set as that the bearing surface 35 of the head 34 making to abut from bag portion 11 is to top end 42 length in the axial direction, identical to extension 5 length in the axial direction with the internal surface in the bag portion 11 (top end 13) abutted from bearing surface 35.Thus, if bag portion 11 is inserted in spring-rubber seat 100, then the end face axially of main part 101 contacts with the top end 42 of wall portion 41.Owing to having extension 5 at contact position, therefore, it is possible to spring-rubber seat 100 is accurately arranged on the position of extension 5.In addition, spring-rubber seat 100 can be made to decline fiercely, until the top end 42 of wall portion 41 and the end contact axially of main part 101, therefore, it is possible to shortening spring-rubber seat 100 is installed to the operating time in bag portion 11.
To this, when non-providing walls 41, the part (part that intensity is little) in main body cylinder portion 2 exceedes the main part 101 that extension 5 enters spring-rubber seat 100 sometimes.For preventing this situation, need to control etc. the elongation of piston rod 47.According to the present embodiment, can be addressed these problems by wall portion 41, at short notice spring-rubber seat 100 is accurately installed to the position of extension 5.
Owing to having wall portion 41, by abutment 51, main part 101 end face of spring-rubber seat 100 can be expressed to the top end 42 of wall portion 41.Due to can between the top end 42 of wall portion 41 and abutment 51 main part 101 of clamp springs rubber base 100, during therefore spring-rubber seat 100 being arranged on pocket 10, can restraining spring rubber base 100 movement in the axial direction.
Then, as shown in Figure 10, limit stoper 60 is worked, to head 34 side mobile piston 66 and cam 67, open opening and closing member 62 to radial outside, the part of base portion 12 (be positioned at above groove portion 14 and the part be positioned at below frangible portion 20) is extruded from inner surface side by outboard end 63.Owing to clipping a part for base portion 12 between the main part 101 and outboard end 63 of spring-rubber seat 100, therefore can not mobile agent cylinder portion 2 in the axial direction.
Next, cylinder body 32 is worked, elongate struts 33 makes head 34 rise on top board 45 side.Because head 34 extrudes the internal surface of the portion that the gives up 11a (part in bag portion 11) from the more top side of frangible portion 20 in bag portion 11, therefore for making the axial tensile stress that frangible portion 20 ruptures act on joint 22.Owing to being extruded the pocket 10 on the downside of frangible portion 20 by the outboard end 63 of opening and closing member 62, therefore prevent extension 5 from crossing while protuberance 103 enters in main part 101, frangible portion 20 can be made to rupture.Bad or extension 5 is installed caves in thereby, it is possible to prevent spring-rubber seat 100.
Frangible portion 20 is not that entirety ruptures simultaneously, but after part fracture, is fractured into starting point makes overall fracture with this.Thus, during from making a part for frangible portion 20 rupture to making overall fracture, give up portion 11a relative to while axes O inclination, pushed to by head 34.Because head 34 is installed on pillar 33 by spring 40, therefore, if head 34 separates in the axial direction with opening and closing member 62, then the corresponding wallowing motion giving up portion 11a.Owing to head 34 can be made to follow the inclination giving up portion 11a along with the fracture of frangible portion 20, therefore, it is possible to make frangible portion 20 rupture smoothly.
To during making its overall fracture after the part fracture of frangible portion 20, the inclination giving up portion 11a becomes large, if under a part for frangible portion 20 keeps the state connected, give up portion 11a to depart from (moving to axle Vertical direction) from head 34, then no longer apply power by head 34 to giving up portion 11a.In this case, there is the problem that can not make the fracture of frangible portion 20 entirety.
To this, according to the present embodiment, give up on portion 11a, the protuberance 18 (burr) outstanding to inner surface side is formed in center, and the inserting hole 37 accepting protuberance 18 is formed in the top of head 34.Thereby, it is possible to during making frangible portion 20 rupture, make inserting hole 37 engage with protuberance 18, can prevent from, under a part for frangible portion 20 keeps the state connected, giving up portion 11a and departing from from head 34.
Consequently, as shown in figure 11, power can be continuously applied by head 34 to the portion 11a of giving up, until the fracture of frangible portion 20 entirety.Thereby, it is possible to prevent fracture defect residual under a part for frangible portion 20 keeps the state connected, frangible portion 20 entirety can be made to rupture effectively.In addition, due to protuberance 18 utilize shaping with pocket 10 while, the burr formed by blow needle 206 ((b) with reference in Fig. 3), therefore without the need to forming the subsidiary operation of protuberance 18 (engaged part).
Because abutment 51 is formed with the hole portion 52 axially run through, therefore, it is possible to prevent from hindering pillar 33 and head 34 to rise because of abutment 51.Thereby, it is possible to make frangible portion 20 rupture by the rising of pillar 33 and head 34.
As shown in figure 12, after the fracture of frangible portion 20 entirety, cylinder body 32 is worked, shrinks pillar 33, make head 34 drop to primary position.In addition, cylinder body 46 is worked, shrink piston rod 47, make supporting part 28 and abutment 51 rise to primary position.Similarly, the drive portion 61 of limit stoper 60 is worked, piston 66 and cam 67 are declined, opening and closing member 62 is closed and is back to primary position.
If take out and give up portion 11a, catch the main body cylinder portion 2 in spring-rubber seat 100 pull-up wall portion 41, then can obtain the dust-proof cover 1 of interpolation end 4 (with reference to Fig. 1) opening with the state be combined on spring-rubber seat 100.The portion that the gives up 11a taken out can recycle as the shaping material of other pockets 10.
Head 34 is formed towards limit stoper 60 side and the conical surface 36 of undergauge.Thus, when making head 34 drop to primary position, the edge (part for frangible portion 20) of the portion that the gives up 11a cut can be prevented to be clipped between head 34 and opening and closing member 62 and cannot to take out.Thereby, it is possible to improve the operability of taking out from manufacturing installation 30 and giving up the operation of portion 11a and dust-proof cover 1.
Herein, it is poroid that the frangible portion 20 of pocket 10 is not set to sewing needle, by implementing the processing of scuffing or trickle continuous otch (nonpenerative hole portion) etc., or the side, bag portion 11 to be formed being separated from each other is welded with side, main body cylinder portion 2, thus the position fracture from the position or welding of implementing processing can be easy to.
But, when implementing the processing of scuffing or trickle continuous otch (nonpenerative hole portion) etc., because the thickness of peripheral part 16 is little, therefore require high machining accuracy.In addition, due to the thickness of peripheral part 16 or the deviation of processing, the breaking wieght of the frangible portion 20 formed easily produces deviation.Consequently, when inserting pocket 10 to the main part 101 of spring-rubber seat 100, before pocket 10 is fixed on assigned position, the possibility that frangible portion is surprisingly ruptured increases.In addition, when welding with side, main body cylinder portion 2 side, bag portion 11 being separated formation, needing welding operation workload, easily producing the breaking wieght deviation of welding portion simultaneously.
To this, as in this embodiment, peripheral part 16 (with reference to Fig. 4) arranges recess 17, when forming joint-cutting 21 and joint 22 by the penetraction depth of adjustment cutter (not shown), by setting the amount of recess, circumferential lengths, curvature etc. of recess 17, the useful area of joint 22 easily can be guaranteed.Its result, can suppress because the thickness of peripheral part 16 or machining deviation produce the breaking wieght deviation of frangible portion 20.In addition, due to frangible portion 20 can be formed in last manufacturing procedure (with reference to Fig. 3 (c)), operation burden can be alleviated.
The circumferential lengths of joint 22 is set smaller than the circumferential lengths of joint-cutting 21.Thus, compared to the situation of the circumferential lengths circumferential lengths of joint-cutting 21 being set smaller than joint 22, can frangible portion 20 be made to rupture with less power.
Because pocket 10 makes interpolation end 4 opening, therefore, it is possible to make the piston rod 112 of vibration damper 110 insert by removing bag portion 11.In addition, owing to not using cutter that frangible portion 20 can be made to rupture, thus make interpolation end 4 opening, therefore, it is possible to prevent cutter to the infringement of spring-rubber seat 100 and hand injured.And then owing to not using cutter, therefore operator picks up without the need to carrying out the operation putting down cutter.Therefore, it is possible to shorten the production interval time of this operation.
Next, with reference to Figure 13 and Figure 14, the second mode of execution is described.In the first embodiment, to protuberance 18 projecting on pocket 10, the situation forming inserting hole 37 (recess) on the other hand on head 34 is illustrated.In the first embodiment, when being given up portion 11a by head 34 and push to, protuberance 18 will engage with inserting hole 37, can prevent giving up portion 11a and laterally depart from from the direct of travel of head 34.To this, in this second embodiment, form hole portion 71 on pocket 70, on head 81, the situation of projecting bolt 82 (protuberance) is described on the other hand.In addition, for the part identical with the part illustrated in the first embodiment, identical reference character is used to omit the following description.Figure 13 is the stereogram of the pocket 70 processed by the manufacturing installation 80 of the second mode of execution, and Figure 14 is the axial, cross-sectional view of manufacturing installation 80.
As shown in figure 13, pocket 70 forms end on observation at the top in bag portion 11 is circular hole portion 71 (engaged part).The tip portion in bag portion 11, after pocket 70 is shaping, uses cutter (not shown) to cut off and is formed by hole portion 71.
As shown in figure 14, the head of manufacturing installation 80 projecting bolt 82 (engagement portion) at the top of the head 81 being coated with pocket 70.The head outer diameter of bolt 82 is set smaller than the internal diameter in the hole portion 71 formed on pocket 70.
In order to manufacture dust-proof cover 1, when pocket 70 covers head 81, by the head patchhole portion 71 of bolt 82.Thus, during making frangible portion 20 rupture, bolt 82 can be made to engage with hole portion 71, keep the state connected to depart from from head 81 therefore, it is possible to prevent giving up portion 11a (with reference to Figure 10) with a part for frangible portion 20.Consequently, during making the fracture of frangible portion 20 entirety, power can be continuously applied by head 81 to the portion 11a of giving up.Therefore, it is possible to prevent fracture defect residual under a part for frangible portion 20 keeps the state connected.
Above, describe the present invention according to mode of execution, but be not difficult to infer that the present invention is not limited to above-mentioned mode of execution, various improvement distortion can be carried out without departing from the spirit and scope of the invention.Such as, suitably can set the circumferential lengths of joint-cutting 21 or joint 22 or axial width, shape or quantity etc.
In the above-described embodiment, although integrated situation is illustrated by blow moulding and forming to the blank of dust-proof cover 1 and pocket 10, is not limited thereto, also can manufactures pocket 10 by other forming method.Forming method as other such as there are molding and forming.
When manufacturing pocket 10 by blow moulding and forming, after the formed body 210 (with reference to Fig. 3 (c)) of hollow shape is shaping, form open end 3 and frangible portion 20 in the mode by cutting off with cutter.To this, when manufacturing pocket 10 by molding and forming, due to without the need to the formed body 210 via hollow shape, therefore without the need to forming open end 3 and frangible portion 20 by using cutter to carry out cut-out.Due to when molding and forming, the profile of pocket 10 is determined by the inner surface configuration of the die cavity of injection mould, therefore by suitably designing injection mould, can manufacture open end 3 or the integrated pocket 10 of frangible portion 20.
When manufacturing pocket 10 by molding and forming, can relatively easily set the thickness of pocket 10.For this reason, by suitably designing injection mould, replace cutting off the mode forming frangible portion 20 (joint-cutting 21 and joint 22), control thickness by one-body molded, can set the trickle continuous otch (nonpenerative hole portion) of frangible portion 20, the pore run through, embossing, part, joint-cutting etc. that thickness is little.Thus, certainly can realize frangible portion 20 is ruptured.
In the above-described embodiment, as an example of ring-shaped member, situation about being inserted in spring-rubber seat 100 by dust-proof cover 1 is illustrated.But ring-shaped member is not limited to spring-rubber seat 100, also the parts of the axial end portion of dust-proof cover 1 institute interpolation can be set to other ring-shaped member (cartridge).Other ring-shaped member illustrates such as fixing device.In addition, ring-shaped member is not limited to be made up of rubber-like elastic body, certainly the metal or plastic cartridge that form a part for fixing device can be set to ring-shaped member.
In the above-described embodiment, for protuberance 103 (with reference to Fig. 1) projecting on spring-rubber seat 100, the situation that the interior dust-proof cover 1 inserted in spring-rubber seat 100 is formed the groove portion 14 engaged with protuberance 103 is illustrated, but is not limited thereto.Certainly can omit protuberance 103 or groove portion 14, keep the interpolation end 4 of dust-proof cover 1 with the elastic support of spring-rubber seat 100.
In the respective embodiments described above, to by spring 40 connecting struts 33 and head 34,81, connect supporting part 48 and abutment 51 by spring 50, the situation making both head 34,81 and abutment 51 swing thus is illustrated.But might not be defined in this, certainly can be carried out the connection of pillar 33 and head 34,81 by spring, or any one party in the connection of supporting part 48 and abutment 51.
If the side in above-mentioned two is connected by spring, then preferably connect supporting part 48 and abutment 51 by spring 50, abutment 51 can be swung.Diameter due to abutment 51 is greater than the diameter of head 34,81, and the method therefore making abutment 51 swing can strengthen the angle of oscillation relative to axes O.Thus, when spring-rubber seat 100 is pressed into bag portion 11, the adjustment surplus of spring-rubber seat 100 relative to the inclination in bag portion 11 can be strengthened.
In the respective embodiments described above, to by between spring 40,50 (disc spring) connecting struts 33 and head 34,81, and the situation between supporting part 48 and abutment 51 is illustrated.But might not be defined in this, the elastomers such as highly resilient material also can be used to replace spring (disc spring).
In the respective embodiments described above, be that the situation that circular parts (cylinder-like part) are formed is illustrated to abutment 51 by cross section, but might not be defined in this, as long as have the bearing surface that can abut against with the end face of spring-rubber seat 100.As other abutment exemplified with cross section be C shape parts, be arranged with the parts of pin end face to axial outstanding multiple pin at circumferentially shape.
Eliminate explanation in the respective embodiments described above, but in the sufficiently long situation of spring 50 length in the axial direction when abutment 51 or compression, also can without the need to providing holes portion 49 on supporting part 48.By spring 50 length in the axial direction when abutment 51 or compression is set to long enough, even if not providing holes portion 49 on supporting part 48, therefore also can prevent from hindering pillar 33 and head 34 to rise when frangible portion 20 ruptures.
In the above-described embodiment, the situation that wall portion 41 is formed by cylinder-like part is illustrated, but might not be defined in this, the arrangement of parts as multiple stake shape certainly can be adopted to surround pillar 33 etc.As long as wall portion 41 limits the movement in the axle Vertical direction in the main body cylinder portion 2 inserting inner side, the position limitation axially of spring-rubber seat 100 can be realized by top end 42.
In the above-described embodiment, extension 5 is illustrated in flange shape outstanding situation on the circumferential complete cycle in main body cylinder portion 2.But might not be defined in this, certainly can leave interval in the circumference in main body cylinder portion 2 and extension 5 is set discontinuously.
Claims (4)
1. a manufacturing installation for dust-proof cover, described dust-proof cover possesses the periphery of the piston rod being configured to the vibration damper surrounding vehicle, and the cylindrical body cylinder portion combined with the ring-shaped member being arranged on car body side, the feature of this manufacturing installation is,
Described main body cylinder portion possesses the bag portion be connected with axial end portion, in described bag portion, circumferentially forms the frangible portion easily ruptured compared with described main body cylinder portion;
Described manufacturing installation possesses pillar, head, abutment, supporting part, elastic member and drive unit;
In the pocket that the axial end portion that described pillar inserts described main body cylinder portion is connected with described bag portion;
Described head is arranged on described pillar top, and is covered by described bag portion;
The end face that described abutment is configured to the axial side of the described ring-shaped member that can insert with the described bag portion covering described head abuts against;
Described supporting part is connected with described abutment;
Described abutment can swingingly be connected on described supporting part by described elastic member, or, described head can be swingingly connected on described pillar;
Described drive unit makes described supporting part and the relative movement in the axial direction of described pillar, and described bag portion is inserted described ring-shaped member, by the interpolation end winding support between described frangible portion and described main body cylinder portion on described ring-shaped member.
2. manufacturing installation according to claim 1, is characterized in that, possesses and is arranged on around described pillar, and inserts the wall portion in described main body cylinder portion within it,
Described wall portion possesses the top end abutted against with the end face of described ring-shaped member opposite side in the axial direction.
3. manufacturing installation according to claim 2, is characterized in that, described main body cylinder portion possesses from axial end portion, the extension more outstanding to radial outside than described ring-shaped member internal diameter,
The bearing surface that the position of the described top end of described wall portion is set to the described head abutted from described bag portion is to described top end length in the axial direction, identical to described extension length in the axial direction with the internal surface in the described bag portion abutted from described bearing surface.
4. the manufacture method of a dust-proof cover, described dust-proof cover possesses the periphery of the piston rod being configured to the vibration damper surrounding vehicle, and the cylindrical body cylinder portion combined with the ring-shaped member being arranged on car body side, the feature of this manufacture method is, possess preparatory process, covering process, fixed work order and removing step
In described preparatory process, prepare pocket, described pocket, by the bag portion being circumferentially formed with the frangible portion easily ruptured compared with described main body cylinder portion, is connected with the axial end portion in described main body cylinder portion;
In described covering process, the described bag portion of described pocket covers the head being arranged on pillar top;
In described fixed work order, make described ring-shaped member relative with the described bag portion covering described head, the end face of abutment and described ring-shaped member side in the axial direction abuts, enable the supporting part and the relative movement in the axial direction of described pillar that are swingingly connected with described abutment or described head by elastic member, described bag portion is inserted described ring-shaped member, by the interpolation end winding support between described frangible portion and described main body cylinder portion on described ring-shaped member;
In described removing step, by described interpolation end winding support under the state of described ring-shaped member, described frangible portion is ruptured, retains and be fixed on the interpolation end of described ring-shaped member, remove axial end portion side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-218671 | 2014-10-27 | ||
| JP2014218671A JP6324292B2 (en) | 2014-10-27 | 2014-10-27 | Dust cover manufacturing apparatus and dust cover manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105546019A true CN105546019A (en) | 2016-05-04 |
| CN105546019B CN105546019B (en) | 2017-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510703193.1A Expired - Fee Related CN105546019B (en) | 2014-10-27 | 2015-10-26 | The manufacture device of dust cover and the manufacture method of dust cover |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6324292B2 (en) |
| CN (1) | CN105546019B (en) |
| TW (1) | TWI617748B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1384012A (en) * | 1971-05-21 | 1974-02-12 | Bosch Gmbh Robert | Bellows |
| CN2864245Y (en) * | 2005-12-31 | 2007-01-31 | 安徽省宁国中鼎股份有限公司 | Vehicle steering machine used thermoplastic elastomer blow-moulding dirt guard |
| JP2008185136A (en) * | 2007-01-30 | 2008-08-14 | Toyo Tire & Rubber Co Ltd | Dust cover |
| JP2010084776A (en) * | 2008-09-29 | 2010-04-15 | Fuji Heavy Ind Ltd | Strut type suspension device |
| CN202065407U (en) * | 2011-04-28 | 2011-12-07 | 浙江吉利汽车研究院有限公司 | Limit structure of shock absorber dustproof cover |
| CN104061273A (en) * | 2013-03-22 | 2014-09-24 | 东海橡塑工业株式会社 | Dust Cover Combination Body |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07239030A (en) * | 1994-02-28 | 1995-09-12 | Tokai Rubber Ind Ltd | Dust cover |
| JP4130018B2 (en) * | 1998-09-04 | 2008-08-06 | 株式会社ショーワ | Hydraulic shock absorber dust cover |
| CN103210233B (en) * | 2011-11-15 | 2015-04-01 | 住友理工株式会社 | Protective cover and manufacturing method therefor |
| JP6088876B2 (en) * | 2013-03-25 | 2017-03-01 | 住友理工株式会社 | Manufacturing method of dust cover assembly |
-
2014
- 2014-10-27 JP JP2014218671A patent/JP6324292B2/en active Active
-
2015
- 2015-10-26 TW TW104135039A patent/TWI617748B/en not_active IP Right Cessation
- 2015-10-26 CN CN201510703193.1A patent/CN105546019B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1384012A (en) * | 1971-05-21 | 1974-02-12 | Bosch Gmbh Robert | Bellows |
| CN2864245Y (en) * | 2005-12-31 | 2007-01-31 | 安徽省宁国中鼎股份有限公司 | Vehicle steering machine used thermoplastic elastomer blow-moulding dirt guard |
| JP2008185136A (en) * | 2007-01-30 | 2008-08-14 | Toyo Tire & Rubber Co Ltd | Dust cover |
| JP2010084776A (en) * | 2008-09-29 | 2010-04-15 | Fuji Heavy Ind Ltd | Strut type suspension device |
| CN202065407U (en) * | 2011-04-28 | 2011-12-07 | 浙江吉利汽车研究院有限公司 | Limit structure of shock absorber dustproof cover |
| CN104061273A (en) * | 2013-03-22 | 2014-09-24 | 东海橡塑工业株式会社 | Dust Cover Combination Body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6324292B2 (en) | 2018-05-16 |
| CN105546019B (en) | 2017-10-27 |
| TWI617748B (en) | 2018-03-11 |
| JP2016084889A (en) | 2016-05-19 |
| TW201616007A (en) | 2016-05-01 |
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Granted publication date: 20171027 Termination date: 20201026 |