CN1043811C

CN1043811C - Jointing device for a corrugated conduit

Info

Publication number: CN1043811C
Application number: CN94119611A
Authority: CN
Inventors: 上野孝弘; 石和正幸
Original assignee: Furukawa Electric Co Ltd
Current assignee: Furukawa Electric Co Ltd
Priority date: 1993-12-13
Filing date: 1994-12-13
Publication date: 1999-06-23
Anticipated expiration: 2014-12-13
Also published as: CN1107954A; KR0179391B1; MY111664A; TW325109U; KR950019347A

Abstract

A connecting device is provided with a first half cylinder piece and a second half cylinder piece. The device is used to cover an upper and lower half circle surfaces of the two corrugated pipes which are prepared for connection. The pieces are made into the same size and shape by the same die and are provided with a hamulus and a hole respectively, and the hamulus and the hole are arranged in symmetry relative to a central section. The corrugation on an inner surface of each piece is shaped in the way, so that a corrugation shape observed from a center of the half cylinder piece to one end of the half cylinder piece is complementary with a corrugation shape observed from the center of the half cylinder piece to the other end of the half cylinder piece on a vertical axis direction of the piece. When the half cylinder pieces are closely clung, the corrugation is continuous which suits for the corrugation on the outer circle surface of the corrugated pipe. The hamulus of the piece is joggled with the hole, which connects the corrugated pipes firmly.

Description

The connection set that bellows is used

The present invention relates to a kind of connection set that is used for connecting between the bellows, more particularly, relate to the connection set that can make bellows simply and reliably connect and can under low cost, be made each other.

In recent years, the high flexible plastic film capicitor is used as the armour tubing of electric wire, cable etc. and subsoil drain continually.Usually, bellows is categorized into the folding class of what is called that a helical ridge class and with helical ridge (or spiral chute) has the transverse wave helical ridge (or spiral chute) that extends in parallel each other (hereinafter referred to as (independence) bellows separately) and puts fiber tube.For the connection of these bellowss, up to the present also using some cylindrical shape connection set.But, to have shortcoming be that to connect the operation that ripple puts the operation of pipe and shed bellows from connection set with connection set all be trouble to the cylindrical shape connection set.

To connect and the demolition operation in order simplifying, once to advise installing the connection set that each two semicylinder spare that can cover the half cycle face of bellows is formed by the people.But, if two semicylinder spares are that different shapes is arranged each other, just need two molds, therefore, the manufacture cost of mould and connection set itself becomes very high.For this reason, the connection set that the semicylinder spare of same shape is installed is that everybody understands.For this connection set, semicylinder spare can be made by using common mould, and therefore, the manufacture cost of connection set can be reduced.

But, nobody's such connection set of proposing to can be applicable to spiral spiral shell ridge and independent ripple type bellows and bellows simply and easily being connected each other also.

For instance, specially permit disclosed Japanese Utility Model 62-86490 and disclosed the connection set shown in Figure 19 and 20.This connection set is made up of the semicylinder spare A and the B of same shape.---for this connection set, hamulus C forms on one of two edges with respect to the plane of intersecting with longitudinal axis, and on another edge, can form in addition hook-shaped some hole D, and on the internal surface of each semicylinder spare, form the adaptive projection E of spiral chute with bellows some hamulus C.In order to use this connection set, be equipped with two semicylinder spares, one semicylinder spare is done 180 ° rotations at circumferencial direction around central shaft with respect to another cylinder spare, hamulus C is fixed among the D of hole, and the projection E on the internal surface of semicylinder spare then fits with formed spiral chute on the outer surface of glass stria tube.Like this, bellows just is connected to each other.

But, for this connection set, the projection E on the internal surface of semicylinder spare is formed on the direction perpendicular to the longitudinal axis of connection set, therefore, this connection set can only be used to connect independent ripple type bellows, and can not be used to connect spiral spiral shell ridge bellows.

Even the connection set of disclosed formation like this in the disclosed Japanese Utility Model 62-86490 of special permission, promptly projection is extended with true dip direction; Make it to adapt to spiral spiral shell ridge bellows, but when semicylinder spare is molded as same shape with mould altogether by using, uses this improved semicylinder spare to connect helical spiral ridge bellows and be still impossible.

Specifically, when the hamulus of above improved connection set semicylinder spare is assembled to relative Kong Zhonghou, the half pitch displacement that formed projection is pressed helical corrugation each other on the internal surface of formed projection and another semicylinder spare on the internal surface of a semicylinder spare, thus the projection of two semicylinder spares becomes discontinuous basically.Therefore, can not constitute formed spiral fluted continuous helical projection on the outer surface that can adapt to helical spiral ridge bellows.On the contrary, when the relative position of semicylinder spare is adjusted, when to make projection on the internal surface of projection on the internal surface of a semicylinder spare and another semicylinder spare be continuous, promptly, the projection of two semicylinder spares entirely forms spiral protrusion, and half pitch displacement of helical corrugation is all pressed in the position of hamulus and the position in hole.In this case, hamulus can not be fixed in the hole, so that two semicylinder spares just can not be connected to each other.

Specially permit disclosed Japanese Patent No. 2-129490 and disclosed one at the connection set shown in Figure 21.In this connection set, ripple does not form on the inner peripheral surface of two semicylinder spares, and these semicylinder spares are by assembled with each other and used.When using this type connection set, no matter whether bellows is helical spiral ridge or independent ripple type, bellows can both be connected reliably.But, when not forming ripple on interior week of semicylinder spare, the semicylinder spare of connection set not with the ripple engagement of bellows.Therefore, when a force pulling put on bellows, bellows can move with respect to connection set, thus bellows be connected to become bad.Also just say that this connection set is low on reliability.

Connection set in order to provide a kind of bellows to use is provided, bellows simply and reliably is connected each other and can under low cost, be made and whether bellows is the helical spiral ridge or independent ripple type no matter this connects device.

The connection set that bellows according to the present invention is used comprises one first semicylinder spare, and it has two opposite ends and is used to cover half cycle face on each the side of two bellowss that are connected with each other, and each bellows has two opposite sides; One second semicylinder spare, it has two opposite ends and is used to cover half cycle face on each the opposite side of bellows.The first and second semicylinder spares are each other near the cylindrical member that covers the circumferential surface of bellows with formation.First and second cylinder spares respectively have a joining portion and a joint, and joining portion of each semicylinder spare and joint are provided with respect to plane symmetry ground, this plane by semicylinder spare central authorities and comprise the cross section of a semicylinder spare.When the first and second semicylinder spares abut against a time-out each other mutually, the joining portion of the first semicylinder spare is meshed with the joint of the second cylinder spare, the joining portion of the second cylinder spare is meshed with the joint of the first post component, thereby forms cylindrical member by two semicylinder spares.The first and second semicylinder spares can have same shape.

Preferably first and second semicylinders respectively have the inner peripheral surface that constitutes corrugated part.Corrugated part is then made a kind of like this shape, promptly at the y direction of described semicylinder spare, the viewed bellows-shaped of an end from the central authorities of semicylinder spare towards semicylinder spare is opposite towards the viewed bellows-shaped of the other end of semicylinder spare with the central authorities from semicylinder spare by helical ridge and spiral fluted repetitive sequence.The shape of the corrugated part complementation that when the first and second semicylinder spares have outer circumferential face with bellows each other near the corrugated part on the inner peripheral surface of two semicylinder spares when forming cylindrical member by their on, forms, thus cylindrical member formed by two semicylinders.

Above-mentioned bellows-shaped is such, promptly at the y direction of described semicylinder spare, press helical ridge and spiral fluted repeated sequence, from the central authorities of semicylinder spare towards the viewed bellows-shaped of semicylinder spare one end be opposite from semicylinder spare central authorities towards the viewed bellows-shaped of the cylinder spare the other end, this means shown in Figure 22 and 23, when an end limit of observing semicylinder spare along the center P of the longitudinal axis A of semicylinder spare with when the other end limit of post semicylinder spare is observed at its center, the width center of helical ridge 33a one of (be shown in Figure 22 A to the width center of 23B represent with symbol m) and the width center (it is represented by symbol n in one of width center) of spiral chute 33b occur between helical ridge and spiral chute by reversed sequence.In other words, on the longitudinal axis A in the semicylinder center P with press the distance of longitudinal direction between the width center of each the helical ridge 33a on semicylinder spare one side, for center P, and be identical in center P and the distance between the width center n of one of corresponding spiral chute 33b of semicylinder spare opposite side.

Figure 22 represents the semicylinder spare that is made of a kind of bellows form, wherein, helical ridge 33a and spiral chute 33b have same width, and Figure 23 represents the semicylinder spare that is made of a kind of bellows-shaped, wherein, the width of helical ridge 33a is greater than the width of spiral chute 33b ...

Advantage of the present invention is as follows: rely on respect to connected member being set symmetrically and being engaged part by the plane of the central authorities of semicylinder spare and the cross section that comprises semicylinder spare, even two semicylinder spares have same shape, each connected member also can be reliably be meshed with the relative part that is engaged.Therefore, the first and second semicylinder spares of connection set can be made by using total mould, thereby have reduced the manufacture cost of connection set.

The advantage of preferred embodiment of the present invention, wherein, on the inner peripheral surface of each semicylinder spare, corrugated part on semicylinder spare one side and the corrugated part on the opposite side are formation like this, so that helical ridge and spiral fluted repeat to be in opposite order between these corrugated parts, when the corrugated part on the outer circumferential face of each bellows is helical, the corrugated part on the inner peripheral surface of the first and second semicylinder spares can form one with the outer circumferential face of bellows on the helical ripple of corrugated part complementation.Therefore, even connection set is made of two semicylinder spares of same shape, bellows also can be by making connection set be meshed with the corrugated part of helical spiral ridge bellows and being connected reliably each other.

Fig. 1 one represents to be connected with two helical spiral ridge bellowss the exploded view of the connection set that the side two end part combine according to first embodiment of the invention, in connection set, each first and second semicylinder spare is to observe from the open side on the surface that joins of this part, and the end of each helical spiral ridge bellows is from the cross side of bellows;

Fig. 2 is the connection set that an II along Fig. 1-the II line is done and the exploded sectional view of bellows;

Fig. 3 is the cross sectional view that an expression helical spiral ridge bellows adopts the state that connection set shown in Figure 1 connected;

Fig. 4 is the schematic representation that an expression spiral spiral shell ridge bellows uses the connection set of Fig. 1 to be connected;

Fig. 5 is after the two semicylinder spares of representing manufacturing are on the basis of existing technology assembled, the schematic representation of the discontinuous situation of bellows;

Fig. 6 is that an expression makes the corrugated part of semicylinder spare make consecutive hours, the schematic representation of the situation that two semicylinder spares shown in Figure 5 can not be connected;

Fig. 7 one is similar to the parts decomposition view of Fig. 1, the connection set that expression is combined according to the end with helical spiral ridge bellows of second embodiment of the invention;

Fig. 8 is the sectional view that a VII along Fig. 7-the VIII line is done;

Fig. 9 is the sectional view that an expression helical spiral ridge bellows uses the situation that connection set shown in Figure 7 connected;

Figure 10 one is similar to the exploded view of Fig. 1 and Fig. 7, represents a third embodiment in accordance with the invention and end connection set together helical spiral ridge bellows;

Figure 11 is one along sectional view that the figure XI-the XI line is done;

Figure 12 is the sectional view that an expression helical spiral ridge bellows adopts the situation that the connection set of Figure 10 connects;

Figure 13 is the planimetric map of the semicylinder spare of the connection set used of expression a fourth embodiment in accordance with the invention, a helical spiral ridge bellows;

Figure 14 is the front elevation of a semicylinder spare shown in Figure 13;

Figure 15 is the left end view of a semicylinder spare shown in Figure 13;

Figure 16 is the right end view of a semicylinder spare shown in Figure 13;

Figure 17 is the end elevation of the temporary fixed situation of an expression semicylinder spare shown in Figure 13 and a similar semicylinder spare;

Figure 18 is the end elevation of the situation that is assembled together of an expression two semicylinder spares shown in Figure 17;

Figure 19 is the perspective view of the semicylinder spare of the conventional connection set of a formation;

Figure 20 is the perspective view of the semicylinder spare of the conventional connection set of a formation;

Figure 21 is second embodiment's of the conventional connection set of an expression the side view of partial longitudinal section;

Figure 22 is that an a kind of bellows-shaped according to the present invention, in the connection set that bellows is used is arranged the supplementary notes view of (distribution), and in these views, Figure 22 A is a planimetric map, and Figure 22 B is a sectional drawing of doing along the longitudinal axis A shown in Figure 22 A;

Figure 23 is one according to the present invention, the supplementary notes view that the another kind of bellows-shaped in the connection set that bellows is used distributes.In these views, Figure 23 A is a planimetric map, and Figure 23 B is a sectional drawing of doing along the longitudinal axis A shown in Figure 23 A.

Please referring to readding Fig. 1 to 3, can be used for two helical

ridge type bellowss

10 and 20 be connected according to the connection set of the first embodiment of the present invention, it comprises the semi-circumference surface on their side of covering, for example cover semi-circumference surface on their opposite side, for example second semicylinder body 40 of the lower semi-circle perimeter surface on the end face part of bellows at the first semicylinder spare 30 and on the upper semicircumference surface on the end face part of the connection side of bellows 10,20.Preferably, semicylinder spare 30 and 40 is molded as same size and dimension by the plastics injection method that is adopted as the common mould of two semicylinder spares.On the outer surface of bellows 10, helical ridge 10a forms with thread forms, thereby has formed ripple (shape), and therefore, helical ridge 10a and spiral chute 10b alternately occur by the length direction of bellows 10.The outer surface of bellows 20 also is molded as a helical ripple of being made up of helical ridge 20a and spiral chute 20b.

More particularly, the first and second semicylinder spares 30 and 40 comprise the

housing

31 and 41 of making half cylindrical shape separately.

Housing

31 and 41 has inner

peripheral surface

33 and 43 separately, and these inner peripheral surfaces constitute

cavity parts

32 and 42, their receivability bellowss 10 and 20 upper semicircumference surface that is connected on the side and a side that be in end face part and the semi-circumference surface on the opposite side.Inner

peripheral surface

33 and 43 is processed to the bellows-shaped of the shape complementarity of

ripple

10a, 10b on the outer circumferential face of shape and

bellows

10,20 and 20a, 20b.On the inner peripheral surface 33 of the first semicylinder spare 30, formed the spiral chute 10b on the outer circumferential face of a shape and bellows spirally, the spiral chute 33b of the shape complementarity of

helical ridge

10a, 20a on the spiral shell coiling ridge 33a of the shape complementarity of 20b and the outer circumferential face of a shape and bellows.On the inner peripheral surface 42 of the second semicylinder spare 40, then form a helical ridge 43a and a spiral chute 43b in the same way spirally.

Ripple on the inner peripheral surface 33 of the first semicylinder spare 30 is so to constitute, so that the sequence by opposite of helical ridge 33a and spiral chute 33b repeats left side and the right side of (central cross sections) P1 on the plane, plane P 1 is by the P of longitudinal center of semicylinder spare 30, and comprise cross section as the semicylinder spare 30 at interface, specifically, on the longitudinal axis A of semicylinder spare 30, formed one by spiral chute 33b on the right side of center cross-sectional away from plane P 1 direction, helical ridge 33a, spiral chute 33b, the ripple that order such as helical ridge 33a are arranged has then formed a helical ridge 33a away from plane P 1 direction in the left side of center cross-sectional, spiral chute 33b, helical ridge 33a, the ripple that order such as spiral chute 33b are arranged.

By the way say, if helical ridge 33a and spiral chute and same width is arranged, after semicylinder spare 30 is pressed 180 ° of rotations of label Z do of Fig. 1 around axis B (it passes through center P), this axis B by central cross section P1 and vertically the intersection point of shaft axis A extend and meet at right angles with the plane of the both side edges that comprises housing 31, spiral chute 33b just is in originally part in the position that the helical ridge 33a of the internal surface of semicylinder spare 30 is occupied till rotating semicylinder spare.

Similarly, the ripple ripple on the inner peripheral surface 43 of the second semicylinder spare 40 also is so to form, so that the sequence by opposite of helical ridge 43a and spiral chute 43b repeats the right side and the left side at central cross section P2.

The first semicylinder spare 30 also comprises first extension part 34 of a plate shape and second extension part 35 of a plate shape, first extension part is outwards given prominence to along the lateral margin extension of housing 31 and with the radial direction of housing, and second extension part is established another lateral margin extension of housing 31 and outwards given prominence to the radial direction of housing 31.The second semicylinder spare 40 has housing 41, cavity portion 42, inner peripheral surface 43, the first extension parts 44 and second extension part 54, and they are corresponding with the part 31 to 35 of the first semicylinder spare 30 separately.As shown in Figure 3, the first and second semicylinder spares 30 and 40 are shaped, so that a cylindrical piece is provided, the extension part 44 that the extension part 34 of this cylindrical piece by the first semicylinder spare 30 and 35 surperficial 34a and 35b abut against the second semicylinder spare 40 and 45 apparent surface 44a and 45a go up and cover

bellows

10 and 20 the side face that is connected side upper-end surface part.

In first and second lengthwise positions, hamulus is (more generally towards an end S1 of the first semicylinder spare 30, on first and second predetermined spacings of central cross section P, mate) 36a and 36b and extension part 34 are integrally to form on the radial direction outward edge of first extension part 34 of the first semicylinder spare 30, in addition, on first and second lengthwise positions of semicylinder spare 30,

hamulus

36c and 36d and extension part 35 integrally form on second extension part, 35 radial direction outward edges.Hamulus 36a to 36d with the meet at right angles extension of form of extension part 34 and 35.In third and fourth lengthwise position,, on first extension part 34 of semicylinder spare 30, form

hole

37a and 37b towards the other end T1 of semicylinder spare 30, apart from first and second predetermined spacings of central cross section P1.Hamulus 36a and 36b and

hole

37a and 37b are with respect to the central cross section symmetric arrangement of the longitudinal direction of semicylinder spare 30 and forming a line each other in the radial direction at semicylinder spare 30.Hamulus 36c and 36d and

hole

37c and 37d arrange in the same way as described above.When semicylinder spare 30 and 40 when assembled with each other, hamulus 36a to 36d and 46a to 46d are inserted among relative opening 37a to 37d and the 47a to 47d.

When the connection set of bellows 10 and the above-mentioned configuration of 20 usefulness was connected to each other,

bellows

10 and 20 was positioned on the same axis and two opposite end faces of bellows closely move or enter each other mutually each other and contact.

Then, the second semicylinder spare 40 is placed on both ends of the surface that bellows connects side partly down, and an end T2 of semicylinder spare 30 is towards bellows 10, therefore, is positioned at approx on the opposing end surface of two bellowss by the central part of the semicylinder spare 40 of longitudinal direction.Then, the inner peripheral surface of the second semicylinder spare 40 is assembled on second side face of bellows 10 and 20.At that time, the relative position of

bellows

10 and 20 be can adjust subtly, thereby corrugated

part

10a, 10b on the outer circumferential face of two bellowss made; 20a, 20b become continuous basically.

Secondly, be placed in the first semicylinder spare 30 above two bellowss and an end S1 of the first semicylinder spare 30 is alignd with the opposite end T2 of the second semicylinder spare 40.So, two ends T2 and the S2 with part 40 is relative separately on vertical (length) direction of bellows with T1 for the two ends S1 of part 30, therefore, the hamulus 36a to 36d of the first semicylinder spare 30 hole 47a to 47d with the second semicylinder spare 40 separately is relative, and the hamulus 46a to 46d of part 40 is relative with hole 37a to 37d separately.When tightly suppressing the bellows 10 and the 20 and second semicylinder spare 40 with the first semicylinder spare 30, the inner peripheral surface of part 30 begins to be assembled on the last outer circumferential face of

bellows

10 and 20, and the hamulus 36a to 36d of part 30 begins among the hole 47a to 47d of inserting member 40.Similarly, the hamulus 46a to 46d of part 40 begins among the hole 37a to 37d of inserting member 30.

As shown in Figure 3, when appliance 30 tightly suppresses part 40 after the inner peripheral surface of part 30 is matched with the outer circumferential face of bellows fully, the hamulus 36a to 36d of part 30 passes the hole 47a to 47d of part 40, and the mating face of hamulus point hook is fixed on the outer surface of part 40

extension parts

44 and 45, and the hamulus 46a to 46d of part 40 passes the hole 37a to 37d of part 30 and the mating face of hamulus point hook is fixed on the outer surface of part 30

extension parts

34 and 35, by these assemblings,

part

30 and 40 just is connected to each other.Therefore,

bellows

10 and 20 is connected to each other by connection set, and this connection set can make

corrugated part

10a, 10b on the two bellows outer circumferential faces, 20a, 20b be meshed with complementary

corrugated part

33a, 33b, 43a and 43b on

part

30 and 40 inner peripheral surfaces.

Shown in Fig. 4 diagram, the first and second semicylinder spares 30 and 40 are assembled into a continuous helical ripple by above-described by the ripple that constitutes each other on the inner peripheral surface of two semicylinder spares, the shape complementarity of its shape and the helical corrugation on the outer circumferential face of bellows 10 and 20.Simultaneously,

part

30 and 40 are by several projections and hole (more generally, some joining portion or joint) and be connected to each other.In Fig. 4, semicylinder spare 30 and 40 is respectively represented by solid line and dotted line, and the helical ridge of ripple is represented by hatching.Therefore, why

helical ridge bellows

10 and 20 can use the connection set of being made up of the semicylinder spare 30 and 40 of same shape to be connected to each other, its reason is the ripple of formed each semicylinder spare, make helical ridge and spiral chute all arrange, and joining portion of each semicylinder spare and joint (shown in the O label and X label of Fig. 4) arranged with symmetrical manner with respect to central cross section P1 or P2 with opposite order with respect to the central cross section P1 or the P2 of semicylinder spare.

Connection set according to the helical ridge bellows on the basis of telling about at the disclosed Japanese Utility Model 62-86490 of aforementioned special permission, if the corrugated part of semicylinder spare is formed as mentioned above, that is not after semicylinder spare is connected to each other, the spiral protrusion portion of two semicylinder spares is discontinuous shown in Fig. 5 diagram, or as shown in Figure 6 spiral protrusion being made when continuous, semicylinder spare can not be connected to each other.This is because a lateral margin of semicylinder spare only is provided with the joining portion, and another lateral margin only is provided with the joint.

Below, the connection set that helical ridge bellows is according to a second embodiment of the present invention used will be illustrated in conjunction with Fig. 7 to 9.

This embodiment's connection set is the same with above first embodiment's connection set basically on profile, use and effect.Therefore, those parts suitable with first embodiment's parts (are for example represented with corresponding reference symbol, second embodiment's the first semicylinder parts that are equivalent to first embodiment's parts 30 are represented with reference symbol 130), the detailed description of each parts of connection set is then omitted.

But, this embodiment's connection set is that the joining portion different with first embodiment's connection set and the profile of joint are arranged, in first embodiment, hamulus is formed in as the joining portion and is connect the semicylinder spare 30 of portion and 40

extension part

34,35; 44, on 45.

Shown in Fig. 7 and 8, on first extension part 134 of the connection set first semicylinder spare 130, although from being in or extending to the position of an end S11 of part 130 near the position of central cross section P11, it is integrally formed with extension part the hamulus 136a that extends along the external side brim of extension part 134.Point place at hamulus 136a forms a groove with the joint form.The external side brim of extension part 134 is relative with hamulus 136a with respect to central cross section P11, and forms the projection 137a who extends as the joining portion.This flat projection 137a is from being in or extending near the position of central cross section P1 the position of the other end T11 of part 130.Second extension part, 135 places at part 130, the one hamulus 136b that extends is the same with hamulus 136a, and on this side, form with respect to the end S11 of central cross section P11, and the flat projection 137b that extends is the same with flat projection 137a, and on the side of the other end T11, form.

The second semicylinder spare 140 is made into the size and dimension as the first semicylinder spare 130.On the

extension part

144 and 145 of the second semicylinder spare 140, the hamulus 146a of extension and 146b form on the side with respect to the end S12 of central cross section P12, and the flat projection 147a and the 147b that extend form on the side of the other end T12.

When using as above formed connection set 130 and 140 that bellows 10 and 20 is connected to each other, by the end face part on the connection side of two bellowss being fixed between the semicylinder spare 130 and 140 of upper and lower sides, the corrugated part that corrugated part on (portion) outer circumferential face is meshed on following (portion) outer circumferential faces of corrugated part and two bellowss on the inner peripheral surface of part 140 of going up of the corrugated part on the inner peripheral surface of part 130 and two bellowss is meshed.Then, as shown in Figure 9, the outer rim of

flat projection

147a and 147b is fitted into respectively in the groove of hook-

type projection

136a and 136b, and the outer rim of

flat projection

137a and 137b is fitted into respectively in the groove of hook-type projection 146a and 146b.So the semicylinder spare of connection set 130 and 140 is connected to each other, and

bellows

10 and 20 is connected to each other.

Below, the connection set of a helical ridge of a third embodiment in accordance with the invention will 10 to 12 be illustrated in conjunction with the accompanying drawings.

This embodiment's connection set is in configuration, uses and places that the connection set with above-mentioned second embodiment is the same basically.Therefore, those parts suitable with second embodiment's parts are represented with corresponding reference symbol, and are omitted its detailed description.For the connection set of this embodiment, in the formed position of flat projection of the hamulus of extension and extension and second embodiment's the connection set is different.

Specifically, on first extension part 234 of the first semicylinder spare 230 of connection set, the one hamulus 236a that extends is formed on the side with respect to the end S21 of the central cross section P21 of part 230, and a flat projection 237a who extends is formed on the side of the other end T21.On second extension part of part 230, a flat projection 237b who extends is formed on the side with respect to the end S21 of central cross section P21, and a hamulus 236b who extends is formed on the side of the other end T21.

On first extension part 244 of the second semicylinder spare 240, this second semicylinder spare has and resembles the same size and dimension of the first semicylinder spare 230, on a side, form a hamulus 246a who extends, and on the side of the other end T22, form the flat projection 247a that extends with respect to the end S22 of the central cross section P22 of part 240.On second extension part 245 of part 240, a flat projection 247a who extends is formed on this side with respect to the end S22 of central cross section P22, and a hamulus that extends then is formed on the side of the other end T22.

When

bellows

10 and 20 uses the connection set as above constituted and when being connected to each other, the end face part of the connection side by making two bellowss is fixed between the semicylinder spare 230 and 240 of upper and lower sides, corrugated part on the inner peripheral surface of part 230 can be meshed with the corrugated part of going up on (portion) outer circumferential face of two bellowss, and the corrugated part on the inner peripheral surface of part 240 can be meshed with the corrugated part on following (portion) outer circumferential faces of two bellowss.In addition, as shown in figure 12, the external side brim of

flat projection

237b and 247a is assembled into respectively in the groove of

hamulus

246b and 236a, and the flare edge of flat projection 237a and 247b is assembled into respectively in the groove of hamulus 246a and 236b.Thereby

bellows

10 and 20 is by using connection set 230 and 240 to be connected to each other.

Below, the connection set of the helical ridge bellows of a fourth embodiment in accordance with the invention will 13 to 16 be illustrated in conjunction with the accompanying drawings.

The connection set of present embodiment is constituted in the same mode of above-mentioned second embodiment.But, the configuration of semicylinder spare, joining portion and joint is different with second embodiment, in a second embodiment, use the semicylinder spare that constitutes by single-piece and provide as the joining portion of semicylinder spare and be engaged the flat projection of extension of part and the hamulus of extension.

Specifically, the connecting body (housing) 331 of the first semicylinder spare 330 of connection set comprises that a 331a of outer tubular portion and is fixedly fitted to the interior tube 331b on it.Preferably the 331a of outer tubular portion is made by the hard material of high mechanical properties, and interior tube 331b is made by the soft material of resiliently deformable rubber.In the case, the 331a of outer tubular portion of semicylinder spare 330 and interior tube 331d are injection mouldings in addition successively.The moulding material of tube 331b is by shown in hole (by the reference symbol of Figure 15) (letter) H that runs through the 331a of outer tubular portion in forming) and feeding, by this feeding, 331a of outer tubular portion and interior tube 331b are with regard to integrally molded moulding.

Shown in Figure 15 and 16, on first and second extension parts 334 and 335 that the semicylinder spare connecting body 331 with the connecting body both side edges integrally forms, respectively there are joint 336c with

projection

336a and 336b and 336d to be set on the side with respect to the end S31 of central cross section P31, and have separately on the joining portion 337c of

projection

337a and 337b and the side that 337d is set at the other end T31.On the length direction of semicylinder spare 330, be engaged

part

336c and 336d and connected member 337c and 337d and arrange symmetrically with respect to central cross section.

The joint 336c of semicylinder spare 330 and 336d by the horizontal direction of part 330, with away from semicylinder spare connecting body 331 directions, with first extend 334 and extend from the external side brim of first extension piece 334 with meeting at right angles.As shown in figure 13, be engaged that

part

336c and 336d extend internally by the longitudinal direction of part 330, from the position near the end face of interior tube 331b and 1/3 length that spreads all over the length overall that is about part 330.

Projection

336a and 336b form on the neutral position of the height of joint 336c and 336d internal surface, and in the radial direction, so that the position near cylinder spare connecting body 331 is inwardly outstanding significantly from joint 336c and 336d.That is to say that the surface of

projection

336a, 336b on this side opposite with connecting body is an arc.The common formation of the inner side surface of

projection

336a, 336b and joint 336c, 336d and other parts one

groove

336e, 336f.

The joining portion 337c of the first semicylinder spare 330 and 337d each free first and second extension parts 334 and 335

formation.Set projection

337a, 337b is in order to be fitted into it in the groove (not shown) of joint (Figure 17 and 18) of the second semicylinder spare 340 and formed on joining portion 337c, 337 the outward edge.The external side brim of

projection

337a, 337b is by circular.

Situation as above embodiment, for formed corrugated part on the inner peripheral surface of the first semicylinder spare 330, on the longitudinal axis of part 330, make corrugated part and corrugated part have certain shape, so that helical ridge and spiral chute are arranged between these corrugated parts with opposite sequence from central cross section P31 to the other end T31 from central cross section P31 to an end S31.Specifically, when longitudinal axis is checked, from central cross section P31 towards the formed corrugated part of an end S31 is by spiral chute 333b, helical ridge 333a, spiral chute 333b, spiral shell ridge 333a ... order, and be according to helical ridge 333a, spiral chute 333b, helical ridge 333a, spiral chute 333b from central cross section P31 towards the formed corrugated part of the other end T31 ... order.On the central part of semicylinder spare 330 inner peripheral surfaces, provide the concave surface of a rectangle of being seen in the plane.In Figure 13,2 chain lines in concave surface 338 represent in fact not form the imaginary line stretcher of corrugated part.

The second semicylinder spare 340 of present embodiment is made and is resembled the same size and dimension of the above-mentioned first semicylinder spare 330.Semicylinder spare 330 with 340 through terminal area each other near together.In Figure 13,

reference number

339a and 339b are illustrated in the locating stud of being installed on the terminal area of the

first semicylinder spare

330, and 339c and 339d are illustrated in formed positioning hole on the terminal

area.Locating stud

339a, 339b and

positioning hole

339c, 339d arrange symmetrically with respect to the central cross section P31 of part 330.Reference number 339e represent one on the outer circumferential face of part 330 set positioning mark.

When (the not expression of helical ridge bellows, the

bellows

10 and 20 that is equivalent to Fig. 1) uses the connection set as above shaped and when being connected to each other, as above all embodiments' situation for example, at first the second semicylinder spare 340 being assembled to two bellowss that are placed on the same axis connects on second side face of end face part of side.Because a concave surface (do not represent, be equivalent to the concave surface 338 of part 330) is to form on the inner peripheral surface of part 340, part 340 just can easily be assembled on the bellows.

Secondly, the first semicylinder spare 330 is installed in above the bellows with the second semicylinder spare 340 with aiming at.At that time, semicylinder spare 330 can be that consistent being easy to aimed at semicylinder 340 with same mark (not shown) on the second demifacet spare 340 by making the set positioning mark 339e of the first semicylinder spare, 330 outer circumferential faces.Because concave surface 338 is arranged on the inner peripheral surface of part 330, so semicylinder spare 330 can be assembled on the bellows easily.

As shown in figure 17, by the first semicylinder spare 330 is close to the second semicylinder spare 340, projection 336a on the joint of part 330, the arc-shaped outer surface of 336b abut against the 347a of the projection (the projection 337a, the 337b that are equivalent to part 330) on the joint of part 340, on the arc-shaped outer surface of 347b, and the outer surface of the projection 337a on the joining portion of part 330,337b is close to a joint (not shown, as to be equivalent to projection 336a, the 336b of part 330) of part 340.At this moment, the second semicylinder spare 340 is stuck by the elastic force of the joint of the first semicylinder spare 330, and the elastic force of the first semicylinder spare 330 by the joint of the second semicylinder spare 340 is stuck.Therefore,

part

330 and 340 can temporarily be fixed each other.At that time,

part

330 and 340 can relatively move in the longitudinal direction each other, thereby, if required, the meticulous adjusting in addition of the relative position of two semicylinder spares.

After this, make the first semicylinder spare 330 further tightly suppress the second cylinder spare 340, preferably use a kind of instrument (not shown) to tightly suppress the second cylinder spare.Rely on this pressure operation, the joint 336c of

part

330 and 336b by the projection 347a on the joint and 347b and little by little expansion come, and projection 347a and 247b abut against on the arc shaped surface of the projection 336b of part 330 and 336a.Because the terminal area of

projection

337a and 347b is that to make the circular terminal area with

projection

336b and 336a be that joint 336c and the 336d that makes the part 330 of arc can be easy to be expanded.Similarly, combined (not shown) of part 340 can be by the projection 337a on the joining portion of

part

330 and 337b and little by little expanded.

The result is fitted into the first semicylinder spare 330 with the projection 347a on the second semicylinder spare, 340 joining portion and 347b to be engaged among the

groove

336f and 336e on the part, and projection 337a on the connected member of the

first semicylinder spare

330 and 337b are fitted in the groove (not shown) on the joint of the second semicylinder spare

340.So part

330 and 340 is connected to each other, bellows is then by connection set 330 and 340 and firmly engage each other, and the corrugated part on the outer circumferential face of corrugated part and bellows on the inner peripheral surface of

part

330 and 340 is meshed.

At that time, the 331b of inner cylindrical portion, the 341b of semicylinder spare connecting body (housing) 331,341 can make attached to the soft wadding on the outer circumferential face of bellows securely by having the rubber elasticity performance.Therefore, connection set has the high sealing ability.In addition, because the outer siphonata 331a and the 341a of semicylinder spare connecting body are made by hard material, so connection set has high mechanical properties.When the first and second semicylinder bodies 330 with 340 each other near the time, the locating stud 339a of

part

330 and 339b just are inserted into (expression in the positioning hole of part 340, the

hole

339c and 339d that are equivalent to part 330) locating stud of the part 340 the same with 339b with the locating stud 339a of part 330 is assembled among the

positioning hole

339c and 339d of part 330, prevents displacement between

part

330 and 340 by this assembling.

Connection set as bellows is not limited to above first to fourth embodiment, but can be changed in every way.

For instance, although the present invention is applicable to the helical ridge type bellows that has been illustrated in the foregoing description, the present invention also can be applicable to (collapsible) bellows bellows separately.Under this condition, the ripple with the bellows-shaped complementation on the outer circumferential face of shape and independent ripple type bellows is to form on the internal surface of semicylinder spare.

For instance, although the bellows of the circular cross-section that connection set is applied to be illustrated in the foregoing description.But connection set of the present invention also can be applicable to have the bellows in the cross section different with the ring cross section.

In the present invention, require the engaging piece and the portion that is engaged accordingly of each semicylinder spare of connection set to arrange symmetrically with respect to the central cross section of semicylinder spare.Specifically, when each semicylinder spare as its two edges of above-mentioned embodiment on have and be enough to arrange connected member and when being engaged two extension parts of part, these connected members and be engaged part and can be arranged on symmetrically on each extension part with respect to the central cross section of semicylinder spare.Therefore, object first embodiment is like that with respect to the central cross section of semicylinder spare, at the longitudinal direction of semicylinder spare, some joining portion only are provided on a side, is not main and the joint only is provided on opposite side.Situation as the 3rd embodiment, connection set can so be shaped, so that on an extension part of semicylinder spare, the joining portion is arranged on the side with respect to the central cross section of semicylinder spare, on the opposite side of joint setting with respect to semicylinder spare central cross section, and on another extension part, the joint is arranged on the side with respect to the central cross section of semicylinder spare, and the joining portion is arranged on the opposite side with respect to the central cross section of semicylinder spare.

For example, can be transformed into layout in the 3rd embodiment to the layout of joining portion among first embodiment and joint.But, when adopting first embodiment's layout, wherein, all joining portion all are arranged on the side of longitudinal direction of semicylinder spare and all joints all are arranged on the opposite side of longitudinal direction of semicylinder spare, advantage is when two semicylinder spares are assembled, and the appropriate assembling of two semicylinder spares can automatically be provided.

Formation resembles the quantity of element of joint a hamulus and the hole and joint and shape etc. and is not limited to quantity and shape in the foregoing description, but various variations in addition.

Semicylinder spare can be made of the single part among above first to the 3rd embodiment, and can be by two parts among the 4th embodiment, and outer and inner cylindrical part is constituted.But the first semicylinder spare to the 3rd embodiment can be improved as the 4th embodiment: semicylinder spare can be made of two parts.In addition, the 4th embodiment's connection set can be improved as first to the 3rd embodiment: semicylinder spare can be made of single part.

Claims

1. connection set that bellows is used comprises:

One first semicylinder spare, it has two opposite ends and is used to cover half cycle face on each the side of two bellowss that are connected to each other, and each bellows has two opposite sides;

One second semicylinder spare, it has two opposite ends and is used to cover on each opposite side of described bellows is the half cycle face;

The described first and second semicylinder spares are each other near the cylindrical member that covers the circumferential surface of described bellows with formation; It is characterized in that:

The described first and second semicylinder spares each tool one joining portion and a joint;

The described joining portion of each described semicylinder spare and joint are provided with respect to plane symmetry ground, this plane by semicylinder spare central authorities and comprise the cross section of a described semicylinder spare;

When the first and second semicylinder spares each other near the time, the described joining portion of the described first semicylinder spare is meshed with the joint of the described second cylinder spare, the described joining portion of the described second cylinder spare is meshed with the joint of the described first cylinder spare, thereby forms described cylindrical member by two described semicylinder spares.

2. the connection set that bellows according to claim 1 is used is characterized in that the described first and second semicylinder spares respectively have the inner peripheral surface that forms corrugated part,

Wherein, described corrugated part is then made a kind of like this shape, promptly press helical ridge and spiral fluted repeated sequence at the y direction of described semicylinder spare, observed bellows-shaped from the central authorities of described semicylinder spare towards an end of described semicylinder spare, be opposite towards the viewed bellows-shaped of the other end of described semicylinder spare with central authorities from described semicylinder spare

Wherein, when the first and second semicylinder spares each other near the time, described corrugated part on the described inner peripheral surface of two described semicylinder spares has the shape of formed corrugated part complementation on the outer circumferential face with described bellows, thereby forms cylindrical member by two described semicylinder spares.

3. the connection set that bellows according to claim 1 and 2 is used is characterized in that the described first and second semicylinder spares are by using one to be two common moulds of described semicylinder spare and be molded as same size and dimension.

4. the connection set that bellows according to claim 1 and 2 is used is characterized in that, formed corrugated part is a spiral form on the described bellows.

5. the connection set that bellows according to claim 1 is used, it is characterized in that, the described first and second semicylinder spares are to have a termination surface, second half cylinder spare is by being attached on this termination surface, and described termination surface is provided with a locating stud and a positioning hole of arranging with respect to described plane symmetry ground.