CN104747721B - Seal structure for joint section between path forming members - Google Patents

Abstract

A seal structure for the joint section between path forming members, configured in such a manner that a seal member is disposed between a first path forming member and a second path forming member, the seal member having a seal section mounted in an endless mounting groove provided in the surface of the first path forming member which is joined to the second path forming member. The seal member (12) is configured so as to integrally have: the seal section (12a); ear sections (12b) protruding sideward along a joint surface (10) from the portions of the seal section (12a) which are separated from each other in the peripheral direction; and protrusions (12c) respectively protruding from the ear sections (12b) in the direction opposite the direction toward a second path forming member (6) so as to be perpendicular to the joint surface (10). The joint surface (10) is provided with: recesses (21) adapted to respectively house the ear sections (12b) and connecting to the mounting groove (19); and press-fit holes (22) which each have one end open to the recess (21) and which allow the protrusions (12c) to be press fitted therein. The configuration facilitates the mounting of the seal member, prevents a mounting error, and provides a uniform tightening allowance over the entire periphery of the seal section.

Description

The seal member that passage forms part and forms part for passage

The application is the applying date to be on October 13rd, 2011, entitled " the sealing knot of passage formation part joint portion The divisional application of structure ", the Chinese invention patent application of Application No. 201180053758.6 (PCT/JP2011/073526).

Technical field

The present invention relates to following passages form the sealing structure of part joint portion：In the first and second passages being bonded to each other Form part and be respectively arranged with the passage communicated with each other under bonding state, in first passage formation part and second channel shape Composition surface into part engagement is provided with mounting groove, and the mounting groove is annularly compassingly set at first passage and forms the logical of part The opening on the direction composition surface in road, forms in the first and second passages and be clamped with seal member between part, the sealing Part is arranged on the mounting groove and has annularly connected sealing.

Background technology

Such structure is known to by patent documentation 1：By the multiple portions for making the outer circumferential side wall of the mounting groove in ring-type Projection and the periphery Elastic Contact of the seal member installed in the mounting groove that position is provided projectingly, and seal member is clamped in Between multiple projections and the inner circumferential wall of mounting groove, additionally, being known to such structure by patent documentation 2：By making installing The projection being provided projectingly in the internal perisporium of the seal member of mounting groove and multiple positions of periphery wall and the inner circumferential wall of mounting groove And the contact of periphery wall surface elastic, and seal member is maintained in mounting groove.Additionally, being known to such knot by patent documentation 3 Structure：By by the convex portion being provided projectingly in the seal member for being installed on mounting groove be pressed into mounting groove bottom surface arrange it is recessed Portion, and seal member is maintained in mounting groove.

Prior art literature

Patent documentation

Patent documentation 1：Japanese Unexamined Patent Publication 62-35152 publication

Patent documentation 2：Japanese Unexamined Patent Publication 2008-31964 publications

Patent documentation 3：Japanese Unexamined Patent Publication 59-73578 publication

The content of the invention

The invention problem to be solved

However, the projection and sealing in the outer circumferential side wall that mounting groove is made as by disclosed in above-mentioned patent documentation 1 The structure of the periphery Elastic Contact of part and the inner circumferential for making as by disclosed in above-mentioned patent documentation 2 in seal member The structure that the projection that multiple positions of wall and periphery wall are provided projectingly is contacted with the inner circumferential wall and periphery wall surface elastic of mounting groove In, it is not intended for the space that seal member is avoided to radial direction, in a pair of channels the combination of part being formed bossed part is configured Under state, at the bossed part of configuration with other parts, the magnitude of interference of seal member is different, it is difficult in the week of seal member To the impartial magnitude of interference of setting.And, in the structure by disclosed in above-mentioned patent documentation 3, it is impossible to visually to convex portion to recess The pushed position of press-in, it is impossible to be confirmed whether to be pressed into exactly, therefore cannot completely exclude the assembling error of seal member.

The present invention is exactly completed in view of the foregoing, its object is to provide a kind of passage formation part joint portion Sealing structure, can avoid assembling error while the facilitation of installation of seal member is realized, and be able to ensure that sealing The impartial magnitude of interference of the complete cycle in portion.

For solving the technical scheme of problem

In order to reach above-mentioned purpose, the present invention forms the sealing structure of part joint portion for a kind of passage, is being bonded to each other The first and second passages formed part be respectively arranged with the passage communicated with each other under bonding state, in first passage forming portion Part forms the composition surface that engages of part and is provided with mounting groove with second channel, and the mounting groove is annularly compassingly set at the One passage forms the opening on the direction composition surface of the passage of part, is formed in the first and second passages and is clamped between part There is seal member, the seal member is installed on the mounting groove and has annularly connected sealing, the passage shape Fisrt feature into the sealing structure of part joint portion is that the seal member has with forming as one：The sealing； Ear, the ear projects along the engagement from multiple positions at the circumferentially spaced interval of the sealing towards side；With And teat, the teat the direction orthogonal with the composition surface respectively from the ear to second channel formed part it is contrary Side project, first passage formed part the composition surface be provided with recess and press-in hole, the recess and the peace Tankage is connected to accommodate the ear respectively, one end of the press-in hole to the recess opening so as to by teat press-in, The press-in hole is with the end, in the side of the teat, in the length range of the teat gap slot, the gap slot is formed with Extend along the pressing direction being pressed into the press-in hole.

Also, on the basis of the structure of fisrt feature, the second aspect of the present invention is, the thickness of the ear is formed Must than the sealing under the bonding state that the first and second passages form part in the side orthogonal with the composition surface To thickness of thin.

And, first or second feature structure on the basis of, the third aspect of the present invention is, in the sealing Two positions at circumferentially spaced interval be continuously provided with the ear projected from the outside side of the sealing.

In addition, the throttle body 5 of embodiment is corresponding with the first passage formation part of the present invention, the air inlet of embodiment Pipe 6 is corresponding with the second channel formation part of the present invention, and the first composition surface 10 of embodiment is corresponding with the composition surface of the present invention.

Invention effect

In accordance with the first feature of the invention, seal member has with forming as one：Sealing, it is annularly connected； Multiple ears, they are prominent to side from multiple positions at the circumferentially spaced interval of the sealing；And teat, the teat Project from the ear, the composition surface for forming part in first passage is provided with：Continuous mounting groove, it is used to install close Envelope portion；Recess, the recess is connected to accommodate ear respectively with mounting groove；And press-in hole, one end of the press-in hole is to recessed Portion's opening so that teat is pressed into, therefore, by the way that teat is pressed into into press-in hole, be prevented from occur seal member is anti-loaded, Or seal member is arranged on into as the position for circumferentially offsetting installation by mistake, and can install sealing is arranged on Seal member is stably maintained at into first passage in the state of in groove and forms part, sealing can be prevented in conveyance and transport Part forms element falling from first passage.Being additionally, since can visually confirm while carrying out teat on one side to be pressed into press-in hole Press-in operation, therefore, it is possible to suppress occur operation error.It is additionally, since ear prominent to side from sealing, therefore, setting It is equipped with the part of multiple ears and other parts, is not result in that the magnitude of interference of sealing is different such that it is able in sealing The impartial magnitude of interference of circumferential setting, in addition, being formed with gap slot in the side of teat, the gap slot is along to press-in with the end The pressing direction that pore pressure enters extends in the length range of teat, therefore, when teat is pressed into press-in hole, it is prevented from press-in hole Blind end and teat between become air-tight state and vent plug occur, the lifting of assembleability can be realized.

Also, second feature of the invention, the thickness of ear is formed must be than sealing in the first and second passages The thickness of thin under the bonding state of part is formed, therefore, ear will not impact to the magnitude of interference of sealing such that it is able to really The impartial magnitude of interference of the complete cycle in confidential letter portion.

And, third feature of the invention, ear is outside from two positions at the circumferentially spaced interval of sealing Side projects, therefore, can with the hands hold ear when seal member is assembled and be installed, assembling operation becomes easy.

Description of the drawings

Fig. 1 is the longitudinal section of throttle body and air inlet pipe under bonding state, is the sectional view of the 1-1 lines in Fig. 2. (first embodiment)

Fig. 2 is the front view of the throttle body that the 2-2 lines in Fig. 1 are observed.(first embodiment)

Fig. 3 is the figure that the 3-3 lines from Fig. 1 observe in the direction of the arrow seal member.(first embodiment)

Fig. 4 is the enlarged drawing at position shown in arrow 4 in Fig. 1.(first embodiment)

Label declaration

5：The throttle body of part is formed as first passage

6：The air inlet pipe of part is formed as second channel

7、8：Passage

10：As first composition surface on composition surface

12：Seal member

12a：Sealing

12b：Ear

12c：Teat

19：Mounting groove

21：Recess

22：Press-in hole

26：Pressing direction

27：Gap slot.

Specific embodiment

Below, embodiments of the present invention are illustrated with reference to Fig. 1～Fig. 4 for enclosing.

Embodiment 1

First, in fig. 1 and 2, the throttle body 5 that part is formed as first passage is provided with first passage 7, The air inlet pipe 6 for forming part as second channel is provided with second channel 8, and the air inlet pipe 6 is folded in the throttle body 5 and does not scheme Between the engine main body for showing, the second channel 8 by and the throttle body 5 combination and connect with first passage 7.

The flange for combining in the throttle body 5 and the air inlet pipe 6 respectively integrally provided with by multiple bolts 9 ... Portion 5a, 6a, press from both sides being formed between described flange part 5a, 6a and the first and second flat composition surfaces 10,11 opposite each other Equipped with seal member 12.

The gate footstep lever 13 for crossing first passage 7 is rotatably supported in the throttle body 5, logical first The air throttle 14 of the butterfly of configuration is for example fastened on the gate footstep lever 13 by a pair of screwed parts 15,15 in road 7.

Air throttle drum 16 is fixed with the one end projected from the throttle body 5 of the gate footstep lever 13, it is not shown The air throttle coil of wire around and be linked to the air throttle drum 16.Also, it is provided between air throttle drum 16 and throttle body 5 multiple Position spring 17,17 pairs of gate footstep levers 13 of the back-moving spring are to the side force for closing the air throttle 14.And, it is and described The throttle sensor 18 that the other end of gate footstep lever 13 links is arranged on the throttle body 5.

On the composition surface engaged with the air inlet pipe 6 of the throttle body 5, it is formed at and the one of throttle body 5 First composition surface 10 of flange part 5a, is provided with mounting groove 19, and the mounting groove 19 is annularly around the direction the of first passage 7 The opening on one composition surface 10, and bypass the air throttle 14 and be arranged under the bypass passageways 20 of the throttle body 5 Trip end is in the position opening than the mounting groove 19 in the inner part.

In the lump with reference to Fig. 3 and Fig. 4, the seal member 12 has with forming as one：Sealing 12a, it is arranged on institute State mounting groove 19 and be annularly connected；Ear 12b, 12b, they are multiple from the circumferentially spaced interval of sealing 12a Such as two, position position is prominent to side such as outside along the first composition surface 10；And teat 12c, 12c, they with The orthogonal direction in first composition surface 10 is prominent to the side contrary with the air inlet pipe 6 from the ear 12b respectively.

On the other hand, the first composition surface 10 of the throttle body 5 is provided with recess 21 and press-in hole with the end 22, institute State recess 21 to be connected with the mounting groove 19 to accommodate the ear 12b respectively, one end of the press-in hole 22 is towards the recess 21 are open so that the teat 12c is pressed into.

The sealing 12a is formed as having in the state of the nature not being sandwiched between throttle body 5 and air inlet pipe 6 Circular shape of cross section.The ear 12b is made up of plectane part 12ba and link head part 12bb, the plectane part 12ba is configured in the position of interval from the outside sides of the sealing 12a, and the link head part 12bb is by the sealing Link up between portion 12a and the plectane part 12ba.And, the depth-set of the mounting groove 19 and the recess 21 is It is identical, when the sealing 12a is installed to into the mounting groove 19, the diapire of the plectane part 12ba and the recess 21 Abut.And, the thickness of the ear 12b is formed must be than the sealing 12a in the throttle body 5 and the air inlet pipe 6 Bonding state under the direction orthogonal with the first composition surface 10 thickness of thin, clip sealing in throttle body 5 and air inlet pipe 6 Part 12 and combine in the state of, produce gap between the ear 12b and the second composition surface 11 as Fig. 4 is explicitly illustrated 23。

The teat 12c is provided projectingly the central part of the plectane part 12ba in the ear 12b, annular recessed portion 25 The plectane part 12ba is arranged in the way of around the teat 12c, is formed from outside in the annular recessed portion 25 and is surrounded The annular wall 24 of the teat 12c.

Also, in the side of the teat 12c, it is formed with along to the press-in hole in the length range of teat 12c The gap slot 27 that the pressing direction 26 of 22 press-ins extends.

Next, the effect to present embodiment is illustrated, the sealing being clipped between throttle body 5 and air inlet pipe 6 Part 12 has with forming as one：Sealing 12a, it is arranged on the first composition surface 10, and first composition surface 10 is air throttle The composition surface engaged with air inlet pipe 6 of body 5, the sealing 12a is arranged on the mounting groove 19 of ring-type and is annularly connected, institute State opening of the mounting groove 19 around first composition surface of direction 10 of first passage 7；Ear 12b, they are from sealing 12a's Multiple positions at circumferentially spaced interval are prominent to side along the first composition surface 10；And teat 12c, they are connecing with first The orthogonal direction in conjunction face 10 is prominent to the side contrary with air inlet pipe 6 from the ear 12b respectively, is provided with the first composition surface 10 Recess 21 and press-in hole 22, the recess 21 is connected to accommodate the ear 12b, the press-in hole respectively with the mounting groove 19 22 one end is open so that the press-in hole 22 is pressed into towards the recess 21, therefore, by the way that teat 12c is pressed into into press-in hole 22, it is prevented from occurring seal member 12 is anti-loaded or seal member 12 is assembled in as the position for circumferentially offsetting by mistake Install, and seal member 12 can be stably maintained at into section in the state of sealing 12a is arranged in mounting groove 19 Valve body 5, can prevent seal member 12 from coming off from throttle body 5 in conveyance and transport.

Being additionally, since can visually confirm on one side while carry out the press-in operation that teat 12c is pressed into press-in hole 22, therefore Can suppress operation error.It is additionally, since ear 12b prominent to side from sealing 12a, therefore, it is multiple being provided with At the part of ear 12b and other parts, it is not result in that the magnitude of interference of sealing 12a is different, can be in the circumference of sealing 12a The impartial magnitude of interference of setting.

And, the thickness of the ear 12b is formed must be than the sealing 12a in the throttle body 5 and the air inlet The thickness of thin in the direction orthogonal with the first composition surface 10 under the bonding state of pipe 6, therefore, ear 12b will not be to sealing 12a The magnitude of interference impact such that it is able to guarantee the impartial magnitude of interference of the complete cycle of sealing 12a.

And, gap slot 27 is formed with the side of the teat 12c, the gap slot 27 is along to the pressure with the end The pressing direction for entering the press-in of hole 22 extends in the length range of the teat 12c, therefore, it is being pressed into the teat to press-in hole 22 During 12c, it is prevented from becoming air-tight state and vent plug occurring between the blind end of the press-in hole 22 and the teat 12c, energy Enough realize the lifting of assembleability.

Additionally, ear 12b is continuously provided with two positions at the circumferentially spaced interval of the sealing 12a, it is described Ear 12b is projected from the outside sides of sealing 12a, therefore, can with the hands hold the ear when seal member 12 is assembled Portion 12b is assembled, and assembling operation becomes easy.

Hereinbefore, embodiments of the present invention are illustrated, but the invention is not restricted to above-mentioned embodiment, can Various design alterations are carried out in the case of without departing from its purport.

For example, in the above-described embodiment, it is throttle body 5 to illustrate that first passage forms part, and second channel is formed Part is air inlet pipe 6, but it is also possible in contrast, and it is air inlet pipe 6 that first passage forms part, and second channel forms part for section Valve body 5.And, the sealing structure for being not limited to the joint portion that throttle body 5 and air inlet pipe 6 combine of the invention, and energy Enough be widely used in having respectively with reference to when the first and second passages of passage for connecting formed part joint portion sealing Structure.

Claims (6)

1. a kind of passage forms part, and the passage forms part (5) and can form part (6) combination with another passage so that each logical Road forms the passage (7,8) formed in part (5,6) and is connected, and the passage forms part (5) to be had：

For forming the composition surface (10) that part (6) is engaged with another passage；

The mounting groove (19) being arranged on composition surface (10), the mounting groove (19) is annularly compassingly set at the passage shape Into the opening on the direction composition surface (10) of the passage (7) of part (5)；And

Seal member (12) in mounting groove (19),

Wherein, the passage forms part and is characterised by,

The seal member (12) has with forming as one：The sealing (12a) being annularly connected；Ear (12b), it is described Ear (12b) is prominent to side along the composition surface (10) from multiple positions at the circumferentially spaced interval of the sealing (12a) Go out；And teat (12c), the teat (12c) is in the direction orthogonal with the composition surface (10) respectively from the ear (12b) It is prominent to the side contrary with another passage formation part (6), and

The composition surface (10) for forming part (5) in the passage is provided with recess (21) and press-in hole (22), the recess (21) it is connected to accommodate the ear (12b) respectively with the mounting groove (19), one end of the press-in hole (22) is to described recessed Portion (21) is open so that the teat (12c) is pressed into,

In the side of the teat (12c), in the length range of the teat (12c) gap slot (27), the gap slot are formed with (27) extend along the pressing direction (26) to press-in hole (22) press-in with the end.

2. passage according to claim 1 forms part, it is characterised in that

The thickness of the ear (12b) is formed must form part (5) and described another than the sealing (12a) in the passage Passage forms the thickness of thin in the direction orthogonal with the composition surface (10) under the bonding state of part (6).

3. passage according to claim 1 and 2 forms part, it is characterised in that

The ear (12b), the ear are continuously provided with two positions at the circumferentially spaced interval of the sealing (12a) From the sealing (12a), outwards side projects in portion (12b).

4. a kind of seal member that part is formed for passage, the passage forms part (5) and can form part with another passage (6) combine and with the composition surface (10) for engaging with another passage formation part (6), and formed in the passage Part (5) and another passage formed part (6) with reference to when being clamped with the seal member (12) to each other,

Wherein, the seal member is characterised by that the seal member (12) has with forming as one：

The sealing (12a) being annularly connected；

Ear (12b), the ear (12b) is from multiple positions at the circumferentially spaced interval of the sealing (12a) along described Composition surface (10) is prominent to side；And

Teat (12c), the teat (12c) the direction orthogonal with the composition surface (10) respectively from the ear (12b) to The contrary side of part (6) is formed with another passage to project,

In the side of the teat (12c), in the length range of the teat (12c) gap slot (27) is formed with.

5. seal member according to claim 4, it is characterised in that

The thickness of the ear (12b) is formed, than the sealing (12a) the passage formed part (5) and it is described separately One passage forms the thickness of thin in the direction orthogonal with the composition surface (10) under the bonding state of part (6).

6. the seal member according to claim 4 or 5, it is characterised in that

The ear (12b), the ear are continuously provided with two positions at the circumferentially spaced interval of the sealing (12a) From the sealing (12a), outwards side projects in portion (12b).