CN208074168U - Mechanically-sealing apparatus - Google Patents

Abstract

The utility model provides a kind of mechanically-sealing apparatus, and the position for engaging the axis direction between ring and sealing ring can be inhibited to deviate.Mechanically-sealing apparatus includes：The sleeve annular in shape around axis, it is embedded in sleeve and around axis gasket annular in shape, it is embedded in gasket and around axis engagement ring annular in shape, the card cylinder annular in shape around axis, it is embedded in card cylinder and around axis pieces annular in shape, it is embedded in the peripheral surface of pieces and around axis lock ring ring annular in shape, and it is slidably mounted on the supporting part of card cylinder and around axis sealing ring annular in shape, the compressed part of pieces has the holding section engaged with sealing ring, pieces has the protrusion protruded to outer peripheral side that at least part along the circumferencial direction around axis extends, lock ring ring is located at the other side on axis direction relative to protrusion.

Description

Mechanically-sealing apparatus

Technical field

The utility model is related to mechanically-sealing apparatus (mechanical seal), the more particularly, to water pump of internal combustion engine Rotary shaft mechanically-sealing apparatus.

Background technology

In the prior art, mechanically-sealing apparatus is used in the rotary shaft of water pump.Fig. 6 is intended to indicate that this existing machinery The partial cross-sectional view of the use state of sealing device 100.

As shown in fig. 6, mechanically-sealing apparatus 100 is disposed in the rotation of the axis hole 202 and water pump 200 of the shell 201 of water pump 200 Gap 204 between shaft 203.Mechanically-sealing apparatus 100 includes：It is embedded in the peripheral surface of rotary shaft 203 and is in ring around axis x The sleeve 101 of shape is installed on sleeve 101 and around gasket 102 annular in shape axis x and in a manner of grip seal pad 102 It is pressed into the engagement ring (mating ring) 103 of sleeve 101.In addition, mechanically-sealing apparatus 100 includes：Card cylinder (cartridge) 104, it is embedded in the axis hole 202 of shell 201；Sealing ring 105 is movably supported in card along axis x The position opposed with engagement ring 103 in cylinder 104；Pieces (bellows) 106 is installed on sealing ring on the inside of the directions axis x 105, and it is installed on card cylinder 104 on the outside of the directions axis x；Lock ring ring (driving band) 107 applies pieces 106 Towards the pressing force of axis x；And spring 108, be disposed in along the direction of axis x card cylinder 104 and pieces 106 it Between.

Under the use state of mechanically-sealing apparatus 100, by pieces 106 and spring 108, sealing ring 105 is in axis It is inwards pushed on the directions line x and is contacted with engagement ring 103, to inhibit the leakage of coolant liquid.

Utility model content

The utility model project to be solved

Here, existing mechanically-sealing apparatus 100 is centered on engaging between ring 103 and sealing ring 105 with by axis x Annular in shape and continuous contact surface in a circumferential direction, it is expected that having uniform contact in the entire surface of the contact surface.

However, in practice, due to the machining tolerance of each component parts 101~108 of mechanically-sealing apparatus 100, each structure At the build-up tolerance of component 101~108, engagement ring 103 and sealing are will produce in the mechanically-sealing apparatus 100 assembled sometimes Deviate the position along the direction of axis x between circle 105.

As a result cause the face pressure of engagement ring 103 and the contact surface of sealing ring 105 to become uneven, revolved making engagement ring 103 In the case of turning, it some times happens that following situation：Singing can occur on the contact surface contacted with sealing ring 105, and this connects The leakproofness of contacting surface declines.Therefore, in existing mechanically-sealing apparatus 100, seek to inhibit to engage ring 103 in a state of use Deviate the position along the direction of axis x between sealing ring 105.

The utility model proposes in view of the above subject, it is intended that provide can inhibit to engage ring and sealing ring it Between axis direction position deviate mechanically-sealing apparatus.

Means for solving the problems

To achieve the goals above, the mechanically-sealing apparatus involved by the utility model includes：Sleeve is in ring around axis Shape has canister portion and wall portion, and cartridge is the part of the tubular extended in the axial direction, and the wall portion is existed from cartridge The discoid part that the end of side on the axis direction extends to outer peripheral side；Gasket is embedded in the sleeve, And it is annular in shape around the axis；Ring is engaged, the gasket is embedded in, and is had around axis component annular in shape Face towards the other side on the axis direction, that is, cricoid contact surface；Card cylinder, it is annular in shape around the axis, there is bearing Portion, wall portion and fitting portion, the supporting part are formed to accommodate the canister portion of the sleeve, are the cylinders extended along the axis direction The part of shape, the wall portion are the circles that the end of the other side on the axis direction from the supporting part extends to outer peripheral side Disk portions, the fitting portion are the annulus that the side from the end of the peripheral side of the wall portion on the axis direction extends Point；Pieces is formed by elastomer, and there is mounting portion, compressed part and press section, the mounting portion to be embedded in the card cylinder, Around axis part annular in shape, the compressed part is located on the outer side relative to the mounting portion, be around the axis be in ring The part of shape, the press section are the cricoid parts extended between the mounting portion and the compressed part；Lock ring ring, it is embedding It is connected to the peripheral surface of the mounting portion of the pieces, and annular in shape around the axis；And sealing ring, it is in ring around the axis Shape, can be slidably mounted to the supporting part of the card cylinder, and on the axis direction with the contact surface for engaging ring Opposed face, that is, press surface, the compressed part of the pieces have a holding section, and the holding section is from another on the axis direction Side engages with the sealing ring, and the pieces has protrusion in the mounting portion, and the protrusion is along the circle around the axis At least part of circumferential direction extends, and protrudes to outer peripheral side, and the lock ring ring is located at the axis side relative to the protrusion The upward other side.

In mechanically-sealing apparatus involved by one of embodiment of the utility model, the protrusion is along around the axis Whole circumference direction be extended continuously.

In mechanically-sealing apparatus involved by one of embodiment of the utility model, the gasket is in interior side contacts Face is contacted with the wall portion of the sleeve, and the inside contact surface is the face towards the side on the axis direction, described close Under the free state of packing, the interior side contacts are protruded towards side on the axis direction.

In mechanically-sealing apparatus involved by one of embodiment of the utility model, the interior side contacts of the gasket Face has the face of cone-shaped in inner circumferential side.

In mechanically-sealing apparatus involved by one of embodiment of the utility model, the engagement ring is in peripheral side There is at least one groove portion, the groove portion to be recessed to inner circumferential side in face, and extend along the axis direction, and the sleeve has at least One engagement pawl, the engagement pawl extend from the other side of the periphery side end of the wall portion of the sleeve on the axis direction, And be inserted into the groove portion of the engagement ring, the width that the engagement pawl is formed as front end is narrower than the width of root, the front end Portion is the part for the other side being located on the axis direction, and the root is the portion for the side being located on the axis direction Point.

In mechanically-sealing apparatus involved by one of embodiment of the utility model, the front end of the engagement pawl The width in portion is formed as：It is become narrow gradually with towards the other side on the axis direction.

Utility model effect

Mechanically-sealing apparatus involved by the utility model is capable of providing and can inhibit between engagement ring and sealing ring The mechanically-sealing apparatus that the position of axis direction is deviateed.

Description of the drawings

Fig. 1 is intended to indicate that the edge of the schematic structure of the mechanically-sealing apparatus involved by the embodiment of the utility model The sectional view in the section of axis.

Fig. 2 is the close-up sectional view of mechanically-sealing apparatus shown in FIG. 1.

Fig. 3 is the close-up sectional view of the gasket of mechanically-sealing apparatus shown in FIG. 1 in a free state.

Fig. 4 is engagement ring, sleeve and the gasket that mechanically-sealing apparatus shown in FIG. 1 is observed in the Z-direction of Fig. 1 Partly enlarged top view.

Fig. 5 be intended to indicate that the use state of the mechanically-sealing apparatus involved by the embodiment of the utility model along axis The sectional view in the section of line.

Fig. 6 is intended to indicate that the partial cross section along the section of axis of the schematic structure of existing mechanically-sealing apparatus Figure.

Specific implementation mode

Hereinafter, being explained with reference to the embodiment of the utility model.

Fig. 1 is intended to indicate that the schematic structure of the mechanically-sealing apparatus 1 involved by the embodiment of the utility model Sectional view along the section of axis x, Fig. 2 are the close-up sectional views of mechanically-sealing apparatus 1 shown in FIG. 1.The utility model Embodiment involved by mechanically-sealing apparatus 1 for example suitable for the water pump of automobile to the shell of water pump in the shell It is sealed between the rotary shaft of the water pump of interior insert.

Hereinafter, for convenience of explanation, arrow a (referring to Fig.1) direction on the directions axis x is set as inside (axis direction On side), and by arrow b (referring to Fig.1) direction on the directions axis x be set as outside (other side on axis direction).Tool For body, outside refers to, under the use state of mechanically-sealing apparatus 1, towards there is no coolant liquid (coolant liquid) etc. is close It seals the region of object or makes the direction in the region that sealed object object is not present, inside refers to, in making for mechanically-sealing apparatus 1 With under state, the direction towards sealed object object region.In addition, in direction (the hereinafter also referred to diameter vertical with axis x To) on, the direction (directions arrow c of Fig. 1) that will be far from axis x is used as peripheral side, will be close to the direction (arrow of Fig. 1 of axis x The directions d) it is used as inner circumferential side.

Mechanically-sealing apparatus 1 includes as shown in Figure 1 sleeve 10, and sleeve 10 is annular in shape around axis x, has canister portion 11 and wall portion 12, canister portion 11 is the part of the tubular extended along the directions axis x, and wall portion 12 is (interior from side of the canister portion 11 on the directions axis x Side) the discoid part that extends to outer peripheral side of end.Sleeve 10 also has at least one engagement pawl 13, and engagement pawl 13 is from set The other side (outside) of the periphery side end of the wall portion 12 of cylinder 10 on the directions axis x extends.

The canister portion 11 of sleeve 10 is for example as shown in Fig. 2, have：Inside canister portion 14, on the outside of part it is prominent to inner circumferential side, It is along the cylindric or substantially cylindric part that axis x extends；And outer side tube part 15, it is located at relative to inside canister portion 14 More outward and inner circumferential side position is along the cylindric or substantially cylindric part that axis x extends.It should be noted that The canister portion 11 of sleeve 10 can not have inside canister portion 14, and the part in outside can not be prominent to inner circumferential side.Mechanical seal fills It sets 1 as described later, under the use state of mechanically-sealing apparatus 1, the rotation of water pump 2 is embedded in the outer side tube part 15 of sleeve 10 Axis 2a.

Wall portion 12 is as shown in Figure 1, 2, is the part of hollow disc shape.Engagement pawl 13 is from the peripheral side of the wall portion 12 of sleeve 10 End extends outward, with linear or curvilinear extension in the width direction orthogonal with extending direction.The tool of engagement pawl 13 Shape is as described later.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, including being embedded in sleeve 10 and around gasket annular in shape axis x 20.Gasket 20 is as shown in Figure 1, 2, has：Scarfing unit 21 is the part of the tubular extended along the directions axis x；And positioning Portion's (prominent I works as the portions て) 22, is the flange shape part extended to outer peripheral side from the end of the inside of scarfing unit 21.

Gasket 20 is embedded in sleeve 10 in scarfing unit 21, to which the scarfing unit 21 of gasket 20 is as shown in Fig. 2, inside Face, that is, inner peripheral surface 23 of side is contacted with the face of the peripheral side of the inside canister portion 14 of sleeve 10, that is, peripheral surface 14a.Scarfing unit 21 The diameter of inner peripheral surface 23 is less than the diameter of the peripheral surface 14a of inside canister portion 14, outside in the region with internal side tube part 14 The mode that circumferential surface 14a is pressed, interference volume of the setting scarfing unit 21 relative to inside canister portion 14.In scarfing unit 21, peripheral surface 25 extend in a manner of backwards to inner peripheral surface 23.Peripheral surface 25 is the face towards peripheral direction, and is extended to tubular along axis x.

Gasket 20 is as shown in Figure 1, 2, has face, that is, inside contact surface towards the side (inside) on the directions axis x 24, and contacted with the wall portion 12 of sleeve 10 in the inside contact surface 24.Inside contact surface 24 is formed in the positioning region of gasket 20 22.In positioning region 22, outside contact surface 26 is extended backwards to 24 ground of inside contact surface.

In addition, mechanically-sealing apparatus 1 as shown in Figure 1, including engagement ring 30, engagement ring 30 be embedded in gasket 20, be around Component annular in shape axis x, and there is face, that is, cricoid contact surface 31 towards the other side (outside) on the directions axis x.Separately Outside, there is face, that is, peripheral surface 32 of the engagement ring 30 in peripheral side at least one groove portion 33, groove portion 33 to be recessed to inner circumferential side, and along axis The directions line x extend.The engagement pawl 13 of sleeve 10 is inserted into the groove portion 33 of engagement ring 30.

Ring 30 is engaged as shown in Fig. 2, rectangular in cross-section or substantially rectangular, and in face, that is, inner peripheral surface 34 of inner circumferential side and sealing The peripheral surface 25 of the scarfing unit 21 of pad 20 contacts.The diameter of the inner peripheral surface 34 of engagement ring 30 is less than the scarfing unit 21 of gasket 20 The diameter of peripheral surface 25, to set interference volume between engagement ring 30 and scarfing unit 21.In addition, engagement ring 30 as shown in Fig. 2, It is contacted with the outside contact surface 26 of the positioning region 22 of gasket 20 in face, that is, press surface 35 towards inside.Peripheral surface 32 and interior Circumferential surface 34 along axis x specifically, be cylindrical in shape extension.In addition, contact surface 31 and press surface 35 specifically, be with axis The face extended in plane orthogonal or substantially orthogonal x or in general plane.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, include around axis x and card cylinder 40 annular in shape.Card cylinder 40 has branch Bearing portion 41, wall portion 42 and fitting portion 43.Supporting part 41 is formed to the canister portion 11 of receiving sleeve 10, is prolonged along the directions axis x The part for the tubular stretched.Wall portion 42 is that the end of the other side (outside) on the directions axis x from supporting part 41 is prolonged to outer peripheral side The discoid part stretched.Fitting portion 43 is that the side (inside) from the periphery side end of wall portion 42 on the directions axis x extends Annulus.

Supporting part 41 is as shown in Fig. 2, be along the cylindric or substantially cylindric part that axis x extends.41 energy of supporting part The canister portion 11 of enough space sleeves 10 in the inner circumferential side that supporting part 41 delimited.

Wall portion 42 is as shown in Fig. 2, be the part of hollow disc shape, such as along the plane orthogonal or substantially orthogonal with axis x Extend.Fitting portion 43 is as shown in Fig. 2, be along the cylindric or substantially cylindric part that axis x extends.

In addition, card cylinder 40 has is formed by recess outward and around axis by supporting part 41, wall portion 42 and fitting portion 43 Space annular in shape line x.

Mechanically-sealing apparatus 1 is as described later, under the use state of mechanically-sealing apparatus 1, in the fitting portion 43 of card cylinder 40 It is chimeric with the shell 2b of aftermentioned water pump 2 and fix.Therefore, the outer diameter of the fitting portion 43 of card cylinder 40 is more than the axis hole of shell 2b Diameter.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, include the pieces 50 formed by elastomer.Pieces 50 has： Mounting portion 51 is the part annular in shape around axis x for being embedded in card cylinder 40；Compressed part 52 is more outward than mounting portion 51 The part annular in shape around axis x of side；And press section 53, it is the ring-type extended between mounting portion 51 and compressed part 52 Part.

The compressed part 52 of pieces 50 as shown in Fig. 2, with from the directions axis x the other side (outside) and sealing ring 70 The holding section 55 of engaging.The holding section 55 of pieces 50 has：Contact surface 55a is the cricoid face towards inside；And it presses Pressure surface 55b is the face towards inner circumferential side.Press surface 55b is pressed by the peripheral surface 73 of aftermentioned sealing ring 70 from peripheral side.

In addition, pieces 50 is embedded in the supporting part 41 of card cylinder 40, the installation of pieces 50 in mounting portion 51 from peripheral side Portion 51 is contacted in face, that is, inner peripheral surface 56 of inner circumferential side with the face of the peripheral side of the supporting part 41 of card cylinder 40, that is, peripheral surface 41a.Installation The inner peripheral surface 56 in portion 51 is pressed by the peripheral surface 41a of the supporting part 41 of card cylinder 40 from peripheral side.

Press section 53 is cricoid component, both can be cylindrical, can also be the shape that section is drawn in curve.Press section 53 become the shape for applying power inwardly to compressed part 52 under the use state of mechanically-sealing apparatus 1 by flexible deformation State.In addition, pieces 50 is as shown in Fig. 2, have flange part 54, flange part 54 is outside from the outboard end of mounting portion 51 The part for the hollow disc shape that side extends.

Pieces 50 in mounting portion 51 there is protrusion 57, protrusion 57 to prolong along at least part of the circumferencial direction around axis x It stretches, and protrudes to outer peripheral side.Protrusion 57 can also be extended continuously along the whole circumference direction around axis x.The protrusion of pieces 50 57 as shown in Fig. 2, be from the cricoid part outstanding to outer peripheral side the face i.e. peripheral surface 51a of the peripheral side of mounting portion 51.It is preferred that The end i.e. inner end part 57a of the inside of protrusion 57 is set more to be located at than the inner peripheral surface 56 of mounting portion 51 on the directions axis x interior Side.Aftermentioned lock ring ring 60 can be disposed in the peripheral side of the inner peripheral surface 56 of the mounting portion 51 of pieces 50 as a result,.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, 2, including lock ring ring 60, lock ring ring 60 are embedded in the peace of pieces 50 The peripheral surface 51a in dress portion 51, and it is annular in shape around axis x.

Face, that is, inner peripheral surface 60a of the lock ring ring 60 in inner circumferential side is contacted with the peripheral surface 51a of the mounting portion 51 of pieces 50.Tightly Garter spring 60 pushes the peripheral surface 51a of mounting portion 51 with inner peripheral surface 60a from peripheral side.

In addition, lock ring ring 60 relative to protrusion 57 as shown in Figure 1, be located at the other side (outside) on the directions axis x.About Lock ring ring 60 supports as shown in Fig. 2, the face of the inside of lock ring ring 60, that is, inner side end 60b is disposed in the protrusion 57 of pieces 50 The position connect.In pieces 50, preferably make the interval between protrusion 57 and flange part 54 on the directions axis x and lock ring ring 60 Interval on the directions axis x is same or about.This is because, as described later, the lock ring under use state can be inhibited Deviate the position of ring 60.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, include sealing ring 70, sealing ring 70 is annular in shape around axis x, slidably Ground is installed on the supporting part 41 of card cylinder 40, and is pressed with opposed with the engagement contact surface 31 of ring 30 face on the directions axis x Pressure surface 76.

Sealing ring 70 is as shown in Fig. 2, have：Matrix part 71 has the press surface 55b with the holding section 55 of pieces 50 The peripheral surface 73 of contact, and section is in the form of a substantially rectangular；And press section 72, from matrix part 71 with lateral surface 75 in axis x Side (inside) on direction backwards is prominent, and with the press surface 76 for the contact surface 31 for being pressed into engagement ring 30.

Matrix part 71 has outer as shown in Fig. 2, with the cylindric or substantially cylindric shape centered on axis x Circumferential surface 73, inner peripheral surface 74 and lateral surface 75.Peripheral surface 73 is as described above, be formed as the engaging to the compressed part 52 of pieces 50 The press surface 55b in portion 55 is pressed.Inner peripheral surface 74 is the face backwards to peripheral surface 73 in matrix part 71, is formed to make card cylinder 40 Supporting part 41 be inserted into, and sealing ring 70 can be made to be slided on the supporting part 41 of card cylinder 40 with inner peripheral surface 74.The formation of lateral surface 75 To be contacted with the contact surface 55a of the holding section 55 of the compressed part 52 of pieces 50 in the edge of peripheral side.

Press section 72 is protruded in a manner of the lateral surface 75 backwards to matrix part 71 from matrix part 71 inwardly, and is had in inside There is press surface 76.

In addition, mechanically-sealing apparatus 1 is as shown in Figure 1, include：Shell 80, it is annular in shape around axis x, and it is embedded in waveform The face of the peripheral side of the compressed part 52 of part 50, that is, peripheral surface 52a；And spring 90, it is annular in shape around axis x, and in the axis side x It is disposed between the wall portion 42 of card cylinder 40 and shell 80 with compressive state upwards.

Next, the gasket 20 of the mechanically-sealing apparatus 1 involved by the utility model is described in more detail using Fig. 3. Fig. 3 is the close-up sectional view of the gasket of mechanically-sealing apparatus shown in FIG. 1 in a free state.

As shown in figure 3, under the free state of gasket 20, the inside contact surface 24 of gasket 20 is on the directions axis x Side (inside) it is prominent.The free state of gasket 20 refers to that i.e. gasket 20 is embedded in set before mechanically-sealing apparatus 1 assembles State is uncharged before cylinder 10.In addition, in gasket 20, as shown in figure 3, including the inside contact surface 24 of gasket 20 Side has the face 27 of cone-shaped.

Gasket 20 specifically, be formed as the profile of the inside contact surface 24 of positioning region 22 in cross section as shown in Figure 3 In protruding inwardly.Inside contact surface 24 is formed by taper surface 27 and vertical plane 28, taper surface 27 be on the directions axis x with The face of expanding cone-shaped or the face of general conical shape towards inside, vertical plane 28 are from the end of the peripheral side of taper surface 27 The face that portion extends in the plane orthogonal or substantially orthogonal relative to axis x or in general plane to outer peripheral side.In gasket 20 In, between inner peripheral surface 23 and taper surface 27, as shown in Figure 3, it is possible to implement chamfering forms inclined surface 29.It needs to illustrate It is that the inside contact surface 24 of positioning region 22 can not have vertical plane 28.

Gasket 20 is specifically, as shown in figure 3, radial thick between the inner peripheral surface 23 and peripheral surface 25 of scarfing unit 21 Degree, with towards outside, radial thickness t2 being gradually increased to from the radial thickness t1 of inside, then, from diameter on the directions axis x It is gradually reduced to radial thickness t3 to thickness t2.Radial directions of the radial thickness t3 in the outside of scarfing unit 21 than the inside of scarfing unit 21 Thickness t1 is thin.In addition, in gasket 20, the inner peripheral surface 23 of scarfing unit 21 is compared with the peripheral surface 25 of scarfing unit 21, inwardly Formed longer.

Next, illustrating the slot of the engagement pawl 13 and engagement ring 30 of the sleeve 10 involved by the utility model using Fig. 4 Portion 33.Fig. 4 is the office of the engagement ring of the mechanically-sealing apparatus shown in FIG. 1 from the Z-direction in Fig. 1, sleeve and gasket Portion's enlarged plan view.

In mechanically-sealing apparatus 1, as shown in figure 4, the engagement pawl 13 of sleeve 10 is inserted into the groove portion 33 of engagement ring 30. In addition, the engagement pawl 13 of sleeve 10 as shown in figure 4, be formed as be located at the directions axis x on the other side (outside) part i.e. before The width w of end 13b is more narrower than the width w of part, that is, root 13c of the side (inside) on the directions axis x.It is specific and Speech, the engagement pawl 13 of sleeve 10 are formed as：Width of the front end 13b of engagement pawl 13 in the direction orthogonal with extending direction is width It is narrow to spend width, that is, width w2s of the w1 than the root 13c of engagement pawl 13 in the direction orthogonal with extending direction.In addition, the card of sleeve 10 Claw stop 13 is formed as：The width w2 of the root 13c of engagement pawl 13 is than engaging the groove portion 33 of ring 30 in the side orthogonal with extending direction To width, that is, width w3 it is narrow.From the aspect of machining tolerance, build-up tolerance, it is difficult to by the width w2 of root 13c and groove portion 33 W3 be set to it is identical, therefore as described later, preferably make the gap g between the width w2 of root 13c and the w3 of groove portion 33 It is extremely narrow.

In addition, the width w1 of the front end 13b of engagement pawl 13 is formed as with (outer towards the other side on the directions axis x Side) and become narrow gradually.Engagement pawl 13 in root 13c specifically, as shown in figure 4, have along the axis x direction circumferential directions extended Root side side 13d, 13d, in front end 13b have be formed as towards the end face towards outside of engagement pawl 13 i.e. end face 13a and Front end side side 13e, 13e towards circumferencial direction that 13 top of engagement pawl attenuates.In addition, engagement pawl 13 have will be from front end The rounded corner portion that front end side side 13e, 13e to end face 13a of 13b smoothly the links i.e. portions R 13f, 13f.Engagement pawl 13 can also Without the portions R 13f.

In mechanically-sealing apparatus 1, the material of sleeve 10 is according to the coolant liquid (coolant liquid) etc. as sealed object Characteristic suitably select, such as sleeve 10 is by formation such as stainless steel, aluminium, copper, steel plates.Gasket 20 is by rubber prepared material shape At, specifically by fluorubber (FKM), nitrile rubber (NBR), butyl rubber (IIR), polyurethane rubber (U), silicon rubber (Q), The formation such as neoprene (CR).Ring 30 is engaged specifically, by formation such as silicon carbide, ceramics, superhard alloy, carbon materials.Card cylinder 40 such as the formation by stainless steel, aluminium, copper, steel plate.Pieces 50 is formed by rubber material.Sealing ring 70 is specifically, by carbon The formation such as SiClx, ceramics, superhard alloy, carbon material.

Next, explanation has the mechanically-sealing apparatus 1 involved by the embodiment of the utility model of above-mentioned composition Use state.Fig. 5 is intended to indicate that the edge of the use state of the mechanically-sealing apparatus 1 involved by the embodiment of the utility model The sectional view in the section of axis.

Mechanically-sealing apparatus 1 is as shown in figure 5, the outer side tube part 15 in sleeve 10 is embedded in the rotary shaft 2a of water pump 2.Separately Outside, mechanically-sealing apparatus 1 is chimeric with the axis hole 2c of shell 2b of water pump 2 in the fitting portion 43 of card cylinder 40, to relative to water pump 2 Shell 2b positioned.

In addition, in mechanically-sealing apparatus 1 in a state of use, the pressing by pieces 50 of press surface 76 of sealing ring 70 Splenium 53 and spring 90 and be pressed into engagement ring 30 contact surface 31.Sealing ring 70 is right via the press surface 76 of sealing ring 70 The contact surface 31 for engaging ring 30 applies the synthesis pressing force in the directions axis x, and the synthesis pressing force is by the engaging by pieces 50 The pressing force that the contact surface 55a in portion 55 applies on the directions axis x and the pressing force on the directions axis x applied by spring 90 Resultant force constitute.

By making lock ring ring 60 be located at outside relative to the protrusion 57 being arranged in the mounting portion 51 of pieces 50, that is, pass through Lock ring ring 60 is set to be located between protrusion 57 and flange part 54 on the directions axis x, to use shape in mechanically-sealing apparatus 1 Under state, position of the lock ring ring 60 relative to the mounting portion 51 of pieces 50 and on the directions axis x can be inhibited to deviate.Therefore, By lock ring ring 60, desired pressing force can be applied to the mounting portion 51 of pieces 50, additionally it is possible to the supporting part of card cylinder 40 41 apply uniform pressing force, and sealing ring 70 can be pressed into engagement ring 30 with desired power.In this way, new according to this practicality Type can not only inhibit to engage the generation of the singing between the contact surface 31 and the press surface 76 of sealing ring 70 of ring 30, Er Qieneng Enough inhibit the decline of the sealing performance between contact surface 31 and press surface 76.

In addition, in mechanically-sealing apparatus 1, as shown in figure 5, the scarfing unit 21 of gasket 20 sleeve 10 with engage ring 30 Radial direction between compressed, to seal sleeve 10 and engage the gap of the radial direction between ring 30.Involved by present embodiment Mechanically-sealing apparatus 1 in, the radial thickness of the scarfing unit 21 of gasket 20 becomes on the directions axis x with towards outside Thickness is protruded to inner circumferential side and peripheral side, therefore, even if in the case that engagement ring 30 moves radially, in radial thickness t2 No more than sleeve 10 with engage interval between ring 30 in the range of, scarfing unit 21 can also realize sleeve 10 and engage between ring 30 Sealing.Sealing performance is improved therefore, it is possible to deviate for the position radially of engagement ring 30.

In addition, in mechanically-sealing apparatus 1, as shown in figure 5, the positioning region 22 of gasket 20 sleeve 10 with engage ring 30 Between compressed on the directions axis x, will engagement ring 30 push outward.Mechanically-sealing apparatus involved by present embodiment In 1, the inside contact surface 24 of the positioning region 22 of gasket 20 protrudes inwardly, therefore, even if engagement ring 30 is on the directions axis x In the case of movement, it is no more than inside contact surface 24 relative to deviation width of the sleeve 10 on the directions axis x in engagement ring 30 Overhang in the range of, positioning region 22 also can press upwards on engagement ring 30 in the axis side x, so as to maintain engagement ring 30 The contact condition of contact surface 31 and the press surface 76 of sealing ring 70.Therefore, it is possible to inclined on the directions axis x for engagement ring 30 From the press surface 76 of maintenance sealing ring 70 docks the pressing force of the contact surface 31 of cyclization 30.Therefore, can not only inhibit to engage ring 30 with the generation of the singing on the contact surface of sealing ring 70, and the decline of the sealing performance of the contact surface can be inhibited.

In addition, according to the utility model, since the gap poles g between the width w2 of root 13c and the w3 of groove portion 33 can be made It is narrow, therefore under the use state of mechanically-sealing apparatus 1, the range that engagement pawl 13 moves back and forth in groove portion 33 can be reduced, into And the generation of singing can be inhibited.

In this way, the mechanically-sealing apparatus 1 involved by embodiment according to the present utility model, can inhibit to engage ring 30 with Deviate the position of axis direction between sealing ring 70.

The embodiment of the utility model is explained above, but the utility model is not limited to the implementation of above-mentioned the utility model Mechanically-sealing apparatus 1 involved by mode, including the utility model design and utility model claims range contained by Whole embodiments.Furthermore it is possible to suitably each composition selectively be combined, to correspond at least the one of the above subject and effect Part.For example, shape, material, configuration, the size of each integral part etc. in the above embodiment can be according to the present utility model Specifically used form and suitably change.

In addition, the mechanically-sealing apparatus 1 involved by present embodiment is suitable for the rotary shaft of the water pump of internal combustion engine, but this reality Applicable object with novel involved mechanically-sealing apparatus is without being limited thereto, for other vehicles, universal machine, industrial machine etc. Rotary shaft etc. can utilize the whole composition of the risen effect of the utility model, the utility model that can also be applicable in.

Label declaration

1,100 mechanically-sealing apparatus；2,200 water pump；2a, 203 rotary shafts；2b, 201 shells；2c, 202 axis holes； 10,101 sleeve；11 canister portions；12 wall portions；13 engagement pawl；The end faces 13a；The front ends 13b；The roots 13c；13d roots side side Face；The front end sides 13e side；The portions 13f R；14 inside canister portions；14a peripheral surfaces；15 outer side tube parts；20,102 gasket；21 Scarfing unit；22 positioning regions；23 inner peripheral surfaces；24 inside contact surfaces；25 peripheral surfaces；26 outside contact surfaces；27 taper surfaces；28 Vertical plane；29 inclined surface；30,103 engagement ring；31 contact surfaces；32 peripheral surfaces；33 groove portions；34 inner peripheral surfaces；35 pressings Face；40,104 card cylinder；41 supporting parts；41a peripheral surfaces；42 wall portions；43 fitting portions；50,106 pieces；51 installations Portion；51a peripheral surfaces；52 compressed parts；52a peripheral surfaces；53 press sections；54 flange parts；55 holding sections；55a is contacted Face；55b press surfaces；56 inner peripheral surfaces；57 protrusions；The inner ends 57a part；60,107 lock ring ring；60a inner peripheral surfaces；60b Inner side end；70,105 sealing ring；71 matrix parts；72 press sections；73 peripheral surfaces；74 inner peripheral surfaces；75 lateral surfaces；76 Press surface；80 shells；90,108 spring；204 gaps；On the inside of a；On the outside of b；The peripheral sides c；The inner circumferential sides d；The gaps g；t1, T2, t3 thickness；W1, w2, w3 width；X axis.

Claims (6)

1. a kind of mechanically-sealing apparatus, which is characterized in that including：

Sleeve, it is annular in shape around axis, there is canister portion and wall portion, cartridge is the cylindrical portion extended along the axis direction Point, the wall portion is the discshaped portion that the end of the side on the axis direction from cartridge extends to outer peripheral side；

Gasket is embedded in the sleeve, and annular in shape around the axis；

Ring is engaged, the gasket is embedded in, is around axis component annular in shape, and with towards the axis direction On the face of the other side, i.e. cricoid contact surface；

Card cylinder, it is annular in shape around the axis, there is supporting part, wall portion and fitting portion, the supporting part to be formed as that institute can be stored The canister portion for stating sleeve, is the barrel extended along the axis direction, and the wall portion is from the supporting part in the axis The discshaped portion that the end of the other side on direction extends to outer peripheral side, the fitting portion are from the end of the peripheral side of the wall portion The annulus that side of the portion on the axis direction extends；

Pieces is formed by elastomer, and there is mounting portion, compressed part and press section, the mounting portion to be embedded in the card cylinder, Around axis part annular in shape, the compressed part is located on the outer side relative to the mounting portion, be around the axis be in ring The part of shape, the press section are the annulus extended between the mounting portion and the compressed part；

Lock ring ring is embedded in the peripheral surface of the mounting portion of the pieces, and annular in shape around the axis；And

Sealing ring, it is annular in shape around the axis, and it is slidably installed on the supporting part of the card cylinder, and have Face, the i.e. press surface opposed with the engagement contact surface of ring on the axis direction,

The compressed part of the pieces has a holding section, and the holding section is from the other side and the sealing on the axis direction Circle engaging,

The pieces has protrusion, at least part of the protrusion along the circumferencial direction around the axis in the mounting portion Extend, and protrude to outer peripheral side, the lock ring ring is located at the other side on the axis direction relative to the protrusion.

2. mechanically-sealing apparatus according to claim 1, which is characterized in that

The protrusion edge is extended continuously around the whole circumference direction of the axis.

3. mechanically-sealing apparatus according to claim 1, which is characterized in that

The gasket is contacted in inside contact surface with the wall portion of the sleeve, and the inside contact surface is towards the axis side The face of upward side,

Under the free state of the gasket, the interior side contacts are protruded facing towards the side on the axis direction.

4. mechanically-sealing apparatus according to claim 3, which is characterized in that

The inside contact surface of the gasket has the face of cone-shaped in inner circumferential side.

5. mechanically-sealing apparatus according to claim 1 or 3, which is characterized in that

The engagement ring in the face of peripheral side there is at least one groove portion, the groove portion to be recessed to inner circumferential side, and along the axis Direction extends,

The sleeve has at least one engagement pawl, and the engagement pawl is from the periphery side end of the wall portion of the sleeve to the axis The other side on direction extends, and is inserted into the groove portion of the engagement ring,

The width that the engagement pawl is formed as front end is narrower than the width of root, and the front end is located on the axis direction The other side part, the root be located at the axis direction on side part.

6. mechanically-sealing apparatus according to claim 5, which is characterized in that

The width of the front end of the engagement pawl is formed as：Gradually become with towards the other side on the axis direction It is narrow.