JP6288605B2 - Slide ring seal with encoder function - Google Patents

Description

  The present invention is a slide ring seal having a slide ring that is supported so as to be movable in the axial direction and an opposing counter ring, wherein the slide ring and the counter ring have seal surfaces that are in contact with each other. The sealing surface of the slide ring is located opposite to the sealing surface of the counter ring, the slide ring is pressed against the counter ring by spring means, and the counter ring is accommodated in the support ring. The present invention relates to a slide ring seal.

  Such a slide ring seal is already known from German Offenlegungsschrift DE 102 01 114 349. This type of slide ring seal is used as a gas lubricated mechanical seal. In this case, the counter ring rotates with respect to the fixed slide ring. The slide ring and the counter ring each have a sealing surface that contacts each other. A gas cushion is formed between the two sealing surfaces, and this gas cushion exhibits a sealing function and ensures that the slide ring and the counter ring slide through each other without any problem.

German Patent Application Publication No. 102011134949

  Based on this background, there is a demand for a slide ring seal that reduces the friction output of the engine. Furthermore, it would be desirable to provide a slide ring seal that can be used in a space saving configuration so that another device, such as an encoder, can be installed without problems. In particular, it is desired to reduce the overall cost and weight of the assembly including the slide ring seal and the encoder.

  Accordingly, the present invention has been made in view of the above problems, and is improved so that the slide ring seal of the type described at the beginning can be used so that the construction space can be saved after inexpensive manufacturing. It is an object of the present invention to provide such a slide ring seal.

  In order to solve this problem, in the configuration of the present invention, a magnetic track having a plurality of magnetic N poles and S poles is provided.

  According to the invention, the rotating counter ring is first mounted so that the counter ring can rotate with the shaft. Thereafter, the counter ring is coupled to a support ring positioned on the shaft. In particular, fixing the position of the counter ring in the support ring gives a certain degree of freedom to the rotating counter ring. With such a fixed position in the support ring, the rotating counter ring can carry out small displacement movements both axially and radially, thus providing a permanent reliability with a static sliding ring. A slide ring seal that exhibits a good sealing function can be formed. Such position locking allows the rotating counter ring to be displaced or moved radially without being damaged, at least against the pressing force acting in the radial direction. With this position locking of the counter ring in the support ring, the slide ring seal can be made particularly compact and saves construction space. This is because it is only necessary to arrange means for applying a force to the counter ring at least in the radial direction inside the support ring. Slide ring with encoder function, which can be used to save construction space after inexpensive manufacturing by forming a magnetic track with a plurality of N and S poles on a slide ring seal, in particular a support ring A seal can be provided.

  Therefore, the issues listed at the beginning have been solved.

  The support ring may be provided with an at least partly elastic inner ridge directed radially inward, i.e. facing radially inward. This inner ridge is advantageously made from an elastomer. This inner raised portion can press the peripheral surface on the radially outer side of the counter ring, and thereby the position of the counter ring can be fixed in a frictional connection type (a structure in which frictional force is used for connection). The inner ridges directed radially inward are advantageously arranged along the inner peripheral surface of a support flange provided on the support ring.

  The support ring may be provided with at least partly elastic outer ridges directed radially outwards, ie facing radially outwards. This outer ridge is advantageously made of elastomer or non-elastomer plastic. This specific configuration makes it possible to improve the slide ring seal so that the slide ring seal functions as an encoder at the same time. That is, ferrite can be introduced into the radially outer raised portion. Ferrites allow magnetization of radially outer ridges or elastomers or plastics.

  The inner ridge and / or the outer ridge may have a magnetic track with a plurality of magnetic north and south poles. With this specific configuration, the rotation of the shaft can be monitored. In particular, it is possible to confirm what rotation state the shaft is in. In addition to the N poles and S poles that are regularly and alternately alternating with each other, the N poles or S poles that form the reference point may be irregularly arranged. These reference points can be detected by a sensor and correspond to the rotational state of the shaft or the position of the shaft.

  The support ring may be formed with a plurality of passage portions for allowing the raised portion material to pass therethrough. With this specific configuration, the radially inner bulge and the radially inner bulge can be made from the same material. For example, during the injection molding of the elastomer, the elastomer can be injected so that the elastomer flows from the radially outer range to the radially inner range through the passage portion. Thus, the radially outer ridge and the radially inner ridge can be made from the same material without problems.

  One end portion in the axial direction of the support ring may be formed with one notch at the edge thereof. This notch is advantageously formed as a groove. The notch is oriented and arranged so that engagement can occur axially within the notch. That is, when the support ring is pressed against the shaft, the orientation of the support ring relative to the shaft can be adjusted so that the notch engages with a complementary corresponding member. In this case, the notch may provide a mechanical reference that ensures proper positioning of the support ring relative to the shaft.

  The support ring may have an annular flange located in one radial plane. In this case, the annular flange is formed so that the support ring can be attached to the shaft with little play. The support ring may have various configurations. The support ring may in particular have an annular flange located in one radial plane, in which case a flange protrudes axially from the flange, the flange being a slide of the flange. It is formed on the opposite side of the ring and counter ring. Such a specific configuration allows radial positioning of the support ring.

  The radially inner ridge may be made of a different material than the radially outer ridge. With this specific configuration, ferrite or another magnetizable material can be successfully mixed into the radially outer ridge without affecting the elastic modulus of the radially inner ridge. Based on this background, for example, it is conceivable that the radially inner ridges are made from an elastomer that does not contain magnetizable particle contaminants. However, the radially outer ridges may be mixed with magnetizable particles so that a magnetic track can be applied to the radially outer ridges. The use of plastic for the radially outer ridges allows for a significantly higher degree of filling than in the case of elastomers. A filling degree of up to 65% has been found to be particularly advantageous.

  The counter ring may be housed in a friction connection in the support ring. This makes it possible to use a slightly compressed elastomer that can be manufactured at low cost, so force the counter ring to position it in the support ring so that it is lightly movable. Can do.

  The counter ring may be accommodated in the support ring in a shape-connected manner, i.e. by a fitting based on the engagement. Thereby, the counter ring can be quickly engaged in, for example, a clip-in type or a snap-in type in the support ring. Thus, quick assembly is possible.

  The counter ring may be accommodated in the support ring in a material connection type (a structure for connecting using another material such as an adhesive). By using the adhesive, the counter ring can be securely fixed in position. With the adhesive, errors in the counter ring or support ring can be compensated without problems.

  The spring means is formed in a bellows shape and may be made of metal, plastic or elastomer. Such a bellows-like spring means has a particularly short structure in the axial direction. Therefore, the slide ring seal can be formed to be extremely compact and short in the axial direction. In connection with the force pressing the slide ring against the rotating counter ring, the spring means may be made of metal, plastic or elastomer.

  In the construction of the assembly according to the invention having a shaft with an outer peripheral surface and the slide ring seal described above, is the support ring pressed against the shaft or connected to the shaft by an intermediate fit? Or a support ring is seated on the shaft with small play.

  According to the present invention, the slide ring seal can be used so that the construction space can be saved after inexpensive manufacturing.

It is sectional drawing and a top view of a shaft provided with the slide ring seal and the sensor for encoders. It is detail drawing of the part shown by "B" of the slide ring seal | sticker shown in FIG. FIG. 4 is an overall view of a support ring with a plurality of passages for allowing the ridge material to pass through and a detail view of the portion indicated by “D”. Overall view of the support ring with one notch formed at the edge, a recess in the elastomer formed by a protrusion located in the forming tool at the portion indicated by "C" in this overall view FIG. 6 is a detailed view showing a portion and a detailed view of a cutout portion in a portion indicated by “E” in the overall view. It is a perspective view which shows the assembly which has a shaft, a slide ring seal, and the sensor for encoders. Cross-sectional and plan views of a shaft with a slide ring seal and a sensor for the encoder, as well as a detailed view of the axially protruding collar (K) and the various of the support ring in the section indicated by “K” in the cross-sectional view It is detail drawing (Ka, Kb, Kc) which shows embodiment. It is detail drawing of the slide ring seal in the part shown by "F" of the sectional view of FIG. A perspective view showing an assembly having a shaft and a slide ring seal, the shaft positioning pin passing through a support ring provided in the slide ring seal, and details of the positioning pin in the portion "L" FIG. FIG. 2 is an overall view of a support ring having elongated holes arranged in a radial direction, a detailed view of this elongated hole in a portion “H”, and a detailed view of a recessed portion formed in an elastomer by a protrusion in a portion “J”. is there. FIG. 2 is an overall view of a support ring having a plurality of passages for ridge material and a detail view of the passages in the “G” section. FIG. 2 is a cross-sectional and plan view of a shaft with a slide ring seal and a sensor for the encoder and a detailed view showing radial play between the shaft and the support ring at the portion indicated by “N”. FIG. 12 is a detailed view of a slide ring seal at a portion indicated by “M” in FIG. 11. FIG. 4 is a perspective view of an assembly having a shaft and a slide ring seal, and a detailed view of a positioning pin provided in the shaft and penetrating the support ring in a portion indicated by “O”. FIG. 4 is a general view of a support ring having a long hole, a detailed view of a long hole in a portion indicated by “P”, and a detailed view of a recessed portion formed in an elastomer by a protrusion in a portion indicated by “Q”. FIG. 2 is a general view of a support ring with a plurality of passages for ridge material and a detailed view of the passages at the part indicated by “R”. It is sectional drawing and a top view of a shaft provided with the slide ring seal and the sensor for encoders. FIG. 17 is a detailed view of a slide ring seal in which an outer ridge and an inner ridge are made of different materials in the portion “R” shown in FIG. 16. It is sectional drawing and a top view of a shaft provided with the slide ring seal and the sensor for encoders. FIG. 19 is a detailed view of the slide ring seal shown in FIG. 18 in which the counter ring is housed in the support ring in a shape connection manner. It is sectional drawing and a top view of a shaft provided with the slide ring seal and the sensor for encoders. FIG. 21 is a detailed view of the slide ring seal shown in FIG. 20 in which the counter ring is housed in the support ring in a shape connection manner. It is sectional drawing and a top view of a shaft provided with the slide ring seal and the sensor for encoders. FIG. 23 is a detailed view of the slide ring seal shown in FIG. 22 in which the counter ring is housed in the support ring in a material connection manner.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an assembly including a slide ring seal 1 in a plan view (right side) and a cross-sectional view along the line AA (left side). The slide ring seal 1 is shown in detail in FIG.

FIG. 2 shows a slide ring seal 1 having a slide ring 2 that is movably supported in the axial direction and an opposing counter ring 3. The slide ring 2 and the counter ring 3 have seal surfaces 2a and 3a that are in contact with each other. The seal surface 2 a of the slide ring 2 is positioned facing the seal surface 3 a of the counter ring 3, and the slide ring 2 is pressed against the counter ring 3 by the spring means 4. The counter ring 3 is accommodated in the support ring 5 in a frictional connection type (a structure in which frictional force is used for connection, the same applies hereinafter).
The slide ring seal 1 has a magnetic track having a plurality of magnetic north and south poles.

  Arranged at the support ring 5 is an at least partly elastic inner ridge 6 directed radially inward. This inner ridge 6 is made of elastomer and applies a force to the counter ring 3 in the radial direction.

  Arranged on the support ring 5 is an outer ridge 7 which is at least partly elastic and is directed radially outward. This outer ridge 7 is made of an elastomer. The elastomer of the inner ridge 6 is the same as that of the outer ridge 7.

  The outer ridge 7 has a magnetic track with a plurality of magnetic north and south poles. Specifically, magnetizable particles, that is, ferrite are accommodated in the elastomer of the outer protruding portion 7. Magnetizable particles are oriented with respect to their magnetic dipoles by a magnetizing device (not shown) so as to produce a pattern consisting of alternating N and S poles. In this case, a configuration in which at least one N pole and / or S pole is irregularly formed as compared with other N poles and / or S poles is also conceivable.

  The support ring 5 is formed with a passing portion 8 for allowing the raised portion material to pass therethrough.

  In the state shown in FIG. 2, the inner peripheral surface 20 corresponding to the inner diameter of the support ring 5 is directly seated on the shaft 10 in the seating range 14.

  The upper view of FIG. 3 shows an overall view of the support ring 5. The support ring 5 is formed with a plurality of passages 8 for the raised material. The lower part of FIG. 3 shows a partially enlarged view of the passage 8.

  From the top view of FIG. 4, it can be seen that one notch 9 is formed at the edge of one axial end of the support ring 5. The notch 9 is enlarged and shown in the lower right view of FIG. A corresponding member can be engaged in the rectangular notch 9 in the axial direction. Thereby, the support ring 5 can be assembled | attached to the shaft 10 as shown in FIG.

  In the lower left diagram of FIG. 4, the recessed portion 11 extending in the axial direction is illustrated. The recessed portion 11 is created by a protrusion positioned on the forming tool. This protrusion enters the inner area of the elastomer layer during the production of the inner ridge 6. This protrusion is formed to a depth that reaches the support ring 5 in the radial direction. In this case, it is possible to leave only a very thin elastomer film between the protrusion and the support ring 5. However, since the protrusion does not enter the inner ridge 6 in the axial direction, the inner ridge 6 does not need to be damaged by the protrusion.

  When the raised portion 6 on the radially inner side is manufactured, a forming tool having a protrusion is used. This forming tool forms a plurality of concave portions 11 on the radially inner raised portion 6. The material of the support ring 5 is bare at several points or has only a very thin film of elastomer. In the radial direction, the protrusion should not enter the support ring 5 beyond the point where the radially inner ridge 6 contacts the counter ring 3. As long as this is the case, the rib is always left, and this rib ensures that the radially inner raised portion 6 contacts the counter ring 3 in a frictional connection manner in the circumferential direction or along the outer peripheral surface of the counter ring 3. There must be.

  The protrusions provided on the used forming tool serve to hold the support ring 5 in the mold cavity, adjust the outer diameter and stabilize the support ring 5. The sheet metal of the support ring 5 must be protected against deflection and deformation during the loading of the elastomer or another plastic.

  FIG. 4 shows a notch 9 formed as a square groove. The notch 9 serves as a mechanical reference for positioning the encoder in the circumferential direction relative to the shaft 10. This is particularly important in encoders where the magnetization pattern has to be positioned in the circumferential direction with respect to the shaft 10.

  FIG. 5 shows a support ring 5 with a notch 9.

  FIG. 6 shows the slide ring seal 1 ′ seated on the shaft 10 in the left side view. This slide ring seal 1 'is illustrated in detail in FIG.

  6 shows a detailed view of the support ring 5 'of the slide ring seal 1'. From this figure, it can be seen that the support ring 5 'has an annular flange 5a'. This flange 5a 'is located in one radial plane, in which case a flange 5b' projects axially from the flange 5a ', which is the flange 5a' shown in FIG. The slide ring 2 and the counter ring 3 are formed on opposite sides.

  A contact area 21 ′ is provided between the support ring 5 ′ and a small step provided on the shaft 10.

  The support ring 5 'has an annular flange 5a'. The annular flange 5a 'is located in one radial plane, in which case the annular flange 5a' is formed so that the support ring 5 'can be mounted on the shaft 10 with little play. Has been.

  The support ring 5 'need not necessarily have a collar. Depending on the configuration of the shaft in the range K, various design variations of the support ring 5 'are conceivable. These design variations are illustrated in the other three figures (Ka, Kb, Kc) on the lower side of FIG.

  FIG. 7 shows a slide ring seal 1 ′ seated on the shaft 10 with radial play. In the seating range 14 ′, the support ring 5 ′ is not directly mounted on the shaft 10.

  The support ring 5 'of the slide ring seal 1' has an inner peripheral surface 20 '. The inner peripheral surface 20 'is mounted on the shaft 10 with a small play. “Small play” means a radial gap width of a few millimeters. The radial gap width is advantageously greater than 0, but at most 10 mm. That is, the radial gap width is related to the radial configuration space provided in the unit.

  As shown in FIG. 7, an O-ring 22 is provided between the support ring 5 ′ and the shaft 10. This O-ring 22 provides a static seal. The O-ring 22 is advantageously made from an elastomer.

  FIG. 8 shows an assembly having a shaft 10 and a slide ring seal 1 ′ with a support ring 5 ′ in the upper view. The shaft 10 has a positioning pin 12, which passes through the support ring 5 '. The positioning pin 12 is shown enlarged in the lower view of FIG.

  The positioning pin 12 forms a mechanical reference that serves to position the encoder in the circumferential direction relative to the shaft 10. This is particularly important in encoders where the magnetization pattern must be positioned circumferentially with respect to the shaft 10.

  A plurality of through holes 13 ′ are provided in the support ring 5 ′ illustrated in the upper diagram of FIG. 9. These through holes 13 ′ serve to screw the shaft 10 to the component adjacent to the encoder. The adjacent component may be, for example, a flywheel of an internal combustion engine. The support ring 5 ′ has an inner peripheral surface 20 ′ for contacting the shaft 10.

  In the lower left figure of FIG. 9, the elongated hole 15 'is shown enlarged. This slot 15 'serves as a mechanical reference. A slot 15 ′ arranged radially in the support ring 5 ′ serves to position the encoder in the circumferential direction relative to the shaft 10. This is particularly important in encoders where the magnetization pattern must be positioned circumferentially with respect to the shaft 10.

  In the lower right of FIG. 9, a recessed portion 11 provided in the elastomer layer and extending in the axial direction is illustrated. The protrusion can enter as far as the support ring 5 '.

  In the upper part of FIG. 10, a view of the support ring 5 'from another direction is shown. In this case, a plurality of passages 8 'are shown. These passages 8 ′ allow the elastomer to reach from the radially outer ridge 7 to the radially inner ridge 6. In the lower part of FIG. 10, the passage 8 'is shown enlarged.

  In FIG. 11, another slide ring seal 1 ″ is shown in the left side view. The support ring 5 ″ of the slide ring seal 1 ″ is seated on the shaft 10 with radial play. The range of radial play is illustrated in the middle circular diagram.

  The slide ring seal 1 ″ shown in FIG. 11 has an annular flange 5a ″. The annular flange 5 a ″ ends at a length higher than 1 mm in the radial direction from the peripheral surface of the shaft 10.

  The slide ring seal 1 "has a support ring 5" seated with a slight margin. For those skilled in the art, such a fit means an “intermediate fit”. As an alternative, the support ring 5 ″ can be assembled with little play.

  FIG. 11 shows the slide ring seal 1 ″ in detail. In this slide ring seal 1 ″, the support ring 5 ″ has an annular flange 5a ″, which is located in one radial plane. However, the flange 5a ″ does not extend to the circumferential surface extending in the axial direction of the shaft 10, but ends above the circumferential surface in the axial direction. Therefore, the support ring 5 ″ is positioned on the shaft 10 with play. This is illustrated in the upper middle diagram of FIG.

  The support ring 5 ″ shown in FIG. 12 is positioned between the shaft 10 and the adjacent component 16, ie the flywheel of the internal combustion engine. Such components are also illustrated for the slide ring seal 1 'in FIG.

  The slide ring seal 1 '' shown in FIG. 12 has a support ring 5 ''. The inner peripheral surface 20 ″ of the support ring 5 ″ is seated on the shaft 10 in the seating range 14 ″.

  In the embodiment shown in FIG. 12, an O-ring 22 is provided between the support ring 5 ″ and the shaft 10. This O-ring 22 provides a static seal. The O-ring 22 is advantageously made from an elastomer.

  The upper view of FIG. 13 shows an assembly having a shaft 10 and a slide ring seal 1 ″ with a support ring 5 ″. A positioning pin 12 protrudes from the shaft 10, and this positioning pin 12 is shown in an enlarged view in the lower side of FIG. 13.

  As shown in FIG. 14, the positioning pin 12 passes through the long hole 15 ″. This elongated hole 15 '' serves as a mechanical reference. Radially arranged slots 15 ″ are formed in the support ring 5 ″ for positioning the encoder in the circumferential direction relative to the shaft 10. This is particularly important in encoders where the magnetization pattern must be positioned circumferentially with respect to the shaft 10.

  In the upper drawing of FIG. 14, a support ring 5 ″ having a plurality of through holes 13 ″ is shown. The support ring 5 ″ further has an inner peripheral surface 20 ″. In the lower left figure of FIG. 14, the elongated hole 15 ″ is shown enlarged. In the lower right diagram of FIG. 14, the recessed portion 11 extending in the axial direction, which has already been described with reference to the previous drawing, is shown. The recessed portion 11 is formed in the elastomer layer in the form of a groove extending in the axial direction.

  In the upper view of FIG. 15, the support ring 5 ″ is shown. The support ring 5 ″ is formed with a plurality of passage portions 8 ″ for guiding the flow of the liquid elastomer. The lower part of FIG. 15 shows these passage portions 8 ″ in an enlarged manner.

  FIG. 16 shows a slide ring seal 1 ′ ″ shown in detail in FIG. This slide ring seal 1 ″ ″ has substantially the same structure as the slide ring seal 1, but is provided with a support ring 5 ″ ″ that does not have a passage 8. The radially inner ridge 6 "" is made of a different material than the radially outer ridge 7 "". With such a specific configuration, magnetizable metal particles are mixed into the radially outer raised portion 7 ′ ″ without affecting the elastic modulus of the radially inner raised portion 6 ″ ″. It becomes possible.

  Instead of an elastomer, it is also possible to use an injection-mouldable plastic that does not become as elastic as the elastomer after cooling.

  FIG. 17 shows a slide ring seal 1 ″ ″ with a support ring 5 ″ ″. The inner peripheral surface 20 ″ ″ of the support ring 5 ″ ″ is seated on the shaft 10 in the seating range 14 ″ ″.

  FIG. 18 shows a cross-sectional view of the assembly with the slide ring seal 1 ′ ″ ″ in the left side view. This slide ring seal 1 '' '' 'is illustrated in detail in FIG.

  FIG. 19 shows a slide ring seal 1 ′ ″ ′ having a slide ring 2 supported in a movable manner in the axial direction and a counter ring 3 ′ ″ ″. The slide ring 2 and the counter ring 3 ″ ″ have seal surfaces 2 a and 3 ″ ″ a that are in contact with each other, and the seal surface 2 a of the slide ring 2 is the seal surface 3 ″ of the counter ring 3. It is located facing ′ ′ a. The slide ring 2 is pressed against the counter ring 3 ′ ″ ″ by the spring means 4. The counter ring 3 ′ ″ ″ is connected to the support ring 5 in a shape connection type (a structure in which the shapes of the connected members are connected, the same shall apply hereinafter), that is, by fitting based on the engagement. Contained.

  Arranged on the support ring 5 is a radially inwardly raised inner ridge 6 ′ ″ ″ that is at least partly elastic. The inner ridge 6 "'" is made of an elastomer and fixes the counter ring 3 "'" in a shape-connected manner. The counter ring 3 ′ ″ ″ has a chamfered portion that is chamfered obliquely, and a pin provided on the inner raised portion 6 ′ ″ ′ is mounted on the chamfered portion. Thereby, the fitting based on the shape connection, that is, the engagement is formed.

  The counter ring 3 "'" is chamfered diagonally only on one side. In the case of an oblique chamfer on one side, it is advantageous that the counter ring 3 "" can be used in a relatively small required space in the axial direction. For example, if the counter ring 3 ′ ″ ′ can be assembled only in one direction because the sealing surface 3 ′ ″ ″ a can be formed only on one side for manufacturing reasons, it may be installed incorrectly. Such a variation can be used to avoid this.

  In the figure on the left side of FIG. 20, the assembly with the slide ring seal 1 ′ ″ ″ ′ is shown in cross section. This slide ring seal 1 "" "is illustrated in detail in FIG.

  FIG. 21 shows a slide ring seal 1 ″ ″ ″ having a slide ring 2 that is supported axially movable and a counter ring 3 ′ ″ ″ ′. The slide ring 2 and the counter ring 3 ″ ″ ″ have seal surfaces 2 a and 3 ″ ″ ″ a that are in contact with each other. In this case, the seal surface 2 a of the slide ring 2 is the counter ring 3 ″. The slide ring 2 is pressed against the counter ring 3 ′ ″ ″ by the spring means 4. The counter ring 3 '' '' '' is accommodated in the support ring 5 in a shape-connecting manner, i.e. by a fitting based on the engagement.

  Arranged on the support ring 5 is a radially inwardly raised inner ridge 6 ′ ″ ″ ′ that is at least partially elastic. This inner ridge 6 "'" "is made of an elastomer and fixes the counter ring 3" "" in a shape-connected manner. The counter ring 3 ′ ″ ″ ′ has two chamfered portions that are obliquely chamfered, and the double-sided chamfered portions extend in directions approaching each other so as to form one tip edge. A pin provided on the inner raised portion 6 ′ ″ ″ ′ engages with the formed leading edge from behind. Thereby, a fitting based on the shape connection, that is, the engagement is formed.

  The counter ring 3 ′ ″ ″ ″ is not simply press-fitted into the support ring 5 with excess dimensions. That is, the counter ring 3 ″ ″ ″ is not press-fitted into the support ring 5 in a frictional connection manner. The counter ring 3 ′ ″ ″ ′ is press-fitted into a raised portion 6 ′ ″ ″ ′ inside the support ring 5. In this case, the outer peripheral surface of the counter ring 3 ′ ″ ″ ′ has oblique chamfered portions on both sides. Have. Via these oblique chamfers, the press-fitted counter ring 3 "" "is connected in shape into the inner ridge 6" "" of the support ring 5 which is formed as shown. The position is fixed by the formula, that is, by the fitting based on the engagement. When oblique chamfers are provided on both sides, the advantage is obtained that the counter ring 3 ′ ″ ″ ′ can be simply press-fitted into the support ring 5 during assembly. In the fully automatic assembly, the counter ring 3 '' '' '' can be pressed into the support ring 5 in any orientation.

  The left view of FIG. 22 shows a cross-sectional view of an assembly having a slide ring seal 1 ″ ″ ″ ″. This slide ring seal 1 "" "" is illustrated in detail in FIG.

  FIG. 23 shows a slide ring seal 1 ″ ″ ″ ″ having a slide ring 2 that is supported so as to be movable in the axial direction and a counter ring 3. The slide ring 2 and the counter ring 3 have seal surfaces 2a and 3a that are in contact with each other. In this case, the seal surface 2a of the slide ring 2 is located facing the seal surface 3a of the counter ring 3, The ring 2 is pressed against the counter ring 3 by spring means 4. The counter ring 3 is accommodated in the support ring 5 ″ ″ ″ ″ in a material connection type (structure to be connected using another material such as an adhesive, hereinafter the same).

  The support ring 5 '' '' '' '' is not provided with an inner ridge which is directed radially inward and which is at least partly elastic. Accordingly, no passing portion is provided in the support ring 5 '' '' '' '. The counter ring 3 is fixed in position in the support ring 5 ″ ″ ″ ″ by an adhesive 19 in a material connection manner.

  In the embodiment shown in FIGS. 2, 7, 12, 17, 19 and 21, the area of the interface between the support rings 5, 5 ′, 5 ″, 5 ″ and the shaft 10. A static seal may be provided at each seating area 14 ', 14 ", 14" "located at and / or within each seating area. Such a static seal may be provided in the form of a seal lacquer or an annular seal bead. The seal bead may have an elastomer or silicone.

  Spring means in all slide ring seals 1, 1 ', 1 ", 1" ", 1" "", 1 "" ", 1" "" 4 is formed in a bellows shape. The spring means 4 may be made of metal, plastic or elastomer.

  The slide ring seals 1, 1 ′, 1 ″, 1 ′ ″, 1 ″ ″, 1 ″ ″ ″, 1 ′ ″ ″ ″ are units in which a seal and an encoder are integrated. The encoder can be detected by a sensor 17. The sensor 17 is mounted on the flange 18 as shown in FIG. A housing portion for the sensor 17 is formed in the flange 18.

  The slide ring seals 1, 1 ', 1 ", 1"', 1 "'", 1 "" ", 1" "" have a plurality of N poles and S poles. Has a magnetic track.

  The slide ring seals 1, 1 ', 1 ", 1" ", 1" "", 1 "" ", 1" "" "are used in internal combustion engines.

DESCRIPTION OF SYMBOLS 1 Slide ring seal 2 Slide ring 3 Counter ring 2a, 3a Seal surface 4 Spring means 5 Support ring 6 Inner protruding part 7 Outer protruding part 8 Passing part 10 Shaft

Claims (15)

Slide ring seals (1, 1 ', 1 ", 1) having a slide ring (2) supported for axial movement and a counter ring (3, 3"'",3"'") ′ ″, 1 ′ ″ ″, 1 ′ ″ ″ ″, 1 ″ ″ ″ ″), the slide ring (2) and the counter ring (3, 3 ′ ″ ′, 3 ′) ′ ″ ′) Have sealing surfaces (2a, 3a, 3 ′ ″ ′ a, 3 ′ ″ ″ ′ a) in contact with each other, and the sealing surfaces (2) of the slide ring (2) 2a) is located opposite to the sealing surface (3a, 3 '''' a, 3 '''''' a) of the counter ring (3, 3 ''''',3'''') The slide ring (2) is pressed against the counter ring (3, 3 ′ ″ ″, 3 ′ ″ ″ ′) by a spring means (4), The counter ring (3, 3 "'", 3 "'") is housed in the support ring (5, 5 ', 5 ", 5"', 5 "'""). In the slide ring seal, a magnetic track having a plurality of magnetic north and south poles is provided, and the support ring (5, 5 ', 5 ", 5"', 5 ") is provided. ′ ″ ′) Is arranged with at least partly elastic inner ridges (6,6 ′ ″, 6 ′ ″ ″, 6 ′ ″ ″ ′) directed radially inwardly A slide ring seal characterized by Slide ring seals (1, 1 ', 1 ", 1) having a slide ring (2) supported for axial movement and a counter ring (3, 3"' ", 3" '") ′ ″, 1 ′ ″ ″, 1 ′ ″ ″ ″, 1 ″ ″ ″ ″), the slide ring (2) and the counter ring (3, 3 ′ ″ ′, 3 ′) ′ ″ ′) Have sealing surfaces (2a, 3a, 3 ′ ″ ′ a, 3 ′ ″ ″ ′ a) in contact with each other, and the sealing surfaces (2) of the slide ring (2) ( 2a) is located opposite to the sealing surface (3a, 3 '' '' a, 3 '' '' '' a) of the counter ring (3, 3 '' '' ', 3' '' ') The slide ring (2) is pressed against the counter ring (3, 3 ′ ″ ″, 3 ′ ″ ″ ′) by a spring means (4), The counter ring (3, 3 "'", 3 "'") is housed in the support ring (5, 5 ', 5 ", 5"', 5 "'" "). In the slide ring seal, the support ring (5, 5 ', 5 ", 5"', 5 "'" ") is provided with a member formed of an elastomer. Is provided with a magnetic track having a plurality of magnetic N poles and S poles. At least partially elastic inner ridges (6, 6) directed radially inward to the support rings (5, 5 ', 5 ", 5"', 5 "'"') 6. A slide ring seal according to claim 2 , wherein 6 '''', 6 '''''', 6 '''''') are arranged. At least partially elastic outer ridges (7, 7) directed radially outwardly on said support rings (5, 5 ', 5 ", 5"', 5 "'"') The slide ring seal according to any one of claims 1 to 3 , wherein 7 "') is arranged. Ridges of the inner (6, 6 ''',6'''',6''''') has a magnetic track and a plurality of magnetic N and S poles, claim 1 Or the slide ring seal according to 3 . 5. A slide ring seal according to claim 4 , wherein the outer ridge (7, 7 '') has a magnetic track with a plurality of magnetic north and south poles. Said support ring (5, 5 ', 5''), the passage portion for passing the ridge material (8, 8', 8 '') are formed, any one of claims 1 to 6 The slide ring seal according to item 1. A notch (9) is formed at the edge of one end in the axial direction of the support ring (5, 5 ', 5 ", 5"', 5 "'"). Item 8. The slide ring seal according to any one of Items 1 to 7 . The support ring (5 ') has an annular flange (5a') located in one radial plane, the annular flange (5a ') having a small play with the support ring (5'). The slide ring seal according to any one of claims 1 to 8 , wherein the slide ring seal is formed to be attachable to the shaft (10). An at least partly elastic inner ridge (6 "') directed radially inward to the support ring (5"') has a radius on the support ring (5 "'). directed towards the outside, at least partially elastic outer ridges (7 ''') are made from different materials, the slide ring seal according to any one of claims 1 to 9 . The counter ring (3,3 ''''',3'''''') is frictionally connected in the support ring (5,5', 5 '', 5 '''', 5 '''''') The slide ring seal according to any one of claims 1 to 10 , wherein the slide ring seal is housed in a formula.   The counter ring (3,3 '' '' ', 3' '' '' ') is connected in shape within the support ring (5,5', 5 '', 5 '' '', 5 '' '' '') The slide ring seal according to any one of claims 1 to 10, wherein the slide ring seal is housed in a formula. The counter ring (3,3 ''''',3'''''') is connected to the material in the support ring (5,5', 5 '', 5 '''', 5 '''''') The slide ring seal according to any one of claims 1 to 10 , wherein the slide ring seal is housed in a formula. 14. A slide ring seal according to any one of claims 1 to 13 , wherein the spring means (4) is formed in a bellows shape and is made of metal, plastic or elastomer. A shaft having an outer peripheral surface (10), a slide ring seal of any one of claims 1 to 14 (1, 1 ', 1'',1''', 1 '''', 1 """,1""")), wherein the support ring (5, 5 ', 5 ", 5"",5""") It is pushed over the shaft (10), is connected to the shaft (10) by an intermediate fit, or the support ring (5, 5 ', 5 ", 5"', 5 "') ′ ″) Is seated on the shaft (10) with a small play, the shaft (10) and the slide ring seals (1, 1 ′, 1 ″, 1 ′ ″, 1 ′ ″ ″, 1 ″ ″ ″, 1 ″ ″ ″ ′)).

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