CN114999763A - Coil mechanism for adjustable damping valve - Google Patents

Coil mechanism for adjustable damping valve Download PDF

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Publication number
CN114999763A
CN114999763A CN202210197724.4A CN202210197724A CN114999763A CN 114999763 A CN114999763 A CN 114999763A CN 202210197724 A CN202210197724 A CN 202210197724A CN 114999763 A CN114999763 A CN 114999763A
Authority
CN
China
Prior art keywords
coil
sealing
bobbin
housing
supply line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210197724.4A
Other languages
Chinese (zh)
Inventor
T·阿瑟夫
A·索尔布雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of CN114999763A publication Critical patent/CN114999763A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F2007/062—Details of terminals or connectors for electromagnets

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

The invention discloses a coil mechanism, comprising a bobbin, which is wound with a conductive coil conductor and is connected via a coil connection to a supply line, wherein the coil mechanism is fixed in a coil housing, which is connected to a hollow carrier rod, in which the supply line extends, wherein the coil mechanism is sealed both with respect to the coil housing and with respect to the supply line, wherein the coil mechanism has a sealing disk, which is separate from the bobbin and seals the coil conductor over a length section outside the bobbin, and which has at least one sealing surface with respect to the coil housing.

Description

Coil mechanism for adjustable damping valve
Technical Field
The invention relates to a coil mechanism for an adjustable damping valve.
Background
DE 102016205651 a1 discloses a coil mechanism for an adjustable damping valve. The coil mechanism is fixed in the valve housing. Hydraulic damping medium flows through the valve housing and the coil mechanism is sealed from the damping medium by a plurality of seals. There is also a problem here to prevent any damping medium from penetrating into the hollow piston rod. The sealing is not only expensive, but also requires a relatively large installation space with respect to other components.
It is therefore proposed in DE 102012203542B 4 to embody the seal integrally with the bobbin. The seal can then be formed by simple sealing lips which on the one hand require much less installation space and on the other hand do not require any assembly work. Unfortunately, however, this is associated with the disadvantage that the supply line of the coil arrangement has to be permanently connected to the coil arrangement. Defects in the supply line lead to complete failure of the entire damping valve device.
Disclosure of Invention
The object of the present invention is to solve the sealing problem of the coil arrangements known from the prior art.
This object is achieved by the fact that: the coil mechanism has a seal disk that is separate from the bobbin and seals the coil wires over a length section outside the bobbin, and the seal disk has at least one sealing surface with respect to the coil housing.
The greatest advantage is that seals on the coil arrangement can be dispensed with. A complete seal can be achieved by merely adding a simple component (i.e. a sealing disc) to the coil arrangement. This is not a problem of sealing the wire windings of the coil arrangement, but rather of preventing the escape of the hydraulic medium, in particular the damping medium, from the coil housing when used in a vibration damper.
In another advantageous embodiment, it is provided that the conductive coil leads are connected to coil strands of enlarged cross-section that pass through the sealing disk. A wire cross-section optimized for a large number of turns can be used for the coil, which is then sealed with coil strands that are significantly more mechanically robust and can be better sealed.
For optimum sealing function of the sealing disc, the bobbin has at least one clamping surface which preloads the sealing area of the sealing disc onto the coil conductor. In this way, the preloading of the sealing region is additionally assisted.
The sealing disc preferably has a recess into which the bobbin extends and thus creates a preload on the sealing area.
The pocket is bounded by a web that surrounds the coil wire and has a sealing area.
Furthermore, the pocket is delimited by an outer annular wall having at least one sealing surface with respect to the coil housing. In general, the sealing disc has a pot shape, in which two side surfaces perform the sealing function.
To protect the coil strands, the recess of the sealing disk has a cross-sectional profile that forms an anti-rotation device with the axial clamping body of the bobbin. Overall, the guide length of the coil strands is thereby increased.
Optionally, the sealing disk has a circumferential collar via which the sealing disk is fixed at least in the circumferential direction relative to the coil housing. The sealing disc is mechanically reinforced in its entirety by a circumferential flange. Furthermore, additional sealing functions may be used.
With regard to the simple configuration of the coil housing, the seal disk has a top surface on which a connector for connecting the coil lead wire to the supply line is supported.
In this case, the connector is held in a fixed position relative to the coil housing with the sealing disk disposed therebetween. Therefore, the connector does not require additional fixing means such as threads or the like.
The sealing disc is preferably made entirely of an elastomeric material, and an additional sealing lip may be integrally formed on the sealing area. Furthermore, the elasticity of the components ensures selective preloading, for example during axial fixing of the connector.
Drawings
The invention will be explained in more detail in the following description with reference to the figures.
More specifically:
FIG. 1 shows an external view of a coil mechanism
FIG. 2 shows an exploded view of FIG. 1
FIGS. 3 and 4 show a detail of FIG. 1 in the region of the sealing disk
Figures 5 and 6 show exploded views of the coil mechanism
Detailed Description
Fig. 1 shows an external view of a coil arrangement 1 in a coil housing 3 fixed to a carrier bar 5. A specific application of these components can be found, for example, in adjustable damping valves 7, in which the coil mechanism 1 is used to actuate a valve armature. In this case, the coil housing serves as a valve housing, while the carrier rod serves as a piston rod in a cylinder 9 filled with damping medium.
Fig. 2 shows an exploded view of fig. 1. It shows a bobbin 13 wound with a conductive coil wire 11 (fig. 4) and having a return path body 15 resting on the bobbin 13. In this illustration, the components present in the adjustable damping valve, damping valve 7, actuator 17, bobbin 13, and valve or coil housing 3, are arranged in the assembly direction. The specific configuration of the actuator 17 and the damping valve 7 is not relevant to the invention. The coil mechanism 1 is fixed between a bottom 19 (fig. 4) of the coil housing 3 and the actuator 17 inside the coil housing 3.
In fig. 3 and 4, the coil connections via which the coil mechanism 1 is connected to the supply line 23 inside the hollow carrier rod 5 are shown on an enlarged scale. When the coil arrangement 1 is used in an adjustable vibration damper, the damping medium flows through the area of the damping valve 7 and the actuator 17 in the coil housing 3. Some damping medium volume in the coil housing 3 also passes through the bobbin 13, since there is no inwardly directed seal between the adjustable damping valve 7 and the coil mechanism 1. The coil arrangement 1 may be referred to as a wet coil. The damping medium can thus also reach the through-opening 25 in the coil housing 3, which serves for the connection of the coil arrangement 1 to the supply line 23. However, in order to prevent the damping medium from flowing out of the coil housing 3 into the hollow support rod 5, the coil arrangement 1 is sealed both with respect to the coil housing 3 and with respect to the supply line 23.
For this purpose, the coil arrangement 1 has a sealing disk 27 which is separate from the bobbin 13 and seals the coil conductors 11 on a longitudinal section outside the bobbin 13 and which has at least one sealing surface 29 with respect to the coil housing 3. In fig. 5 and 6, the sealing disc 27 is shown as a separate part. The seal disk 27 has two through openings 31 for the passage and sealing of coil strands 33 which are connected to the conductive ends of the coil leads 11. The cross section of the coil strands 33 is embodied to be much larger than the cross section of the coil wires 11 in order to increase the mechanical load-bearing capacity. Deformation of the coil strands 33 when they slide over the sealing disk 27 should be avoided. The coil strands 33 have an L-shape and extend in a bridge 35 of the bobbin 13, which has a sleeve shape with two end flanges 37. The flange 37 extending adjacent to the seal disk 27 has a cuboidal material pile as a bridge 35 extending from the outer edge of the flange 37 to the center of the coil mechanism 1 or bobbin 13. The bridge 35 accommodates radially extending legs 39 of the coil strands 33. The vertical leg 41 of the coil strand 33 passes through the bridge 35 in the direction in which the sealing disk 27 rests on the bridge 35.
The bobbin 13, in particular the bridge 35, has at least one clamping surface 43 which preloads a sealing area 45 of the sealing disk 27 onto the coil wire or coil strand 33. The sealing region 45 is provided with a sealing lip in the direction of the coil strands 33 and surrounds each of the two coil strands 33, respectively.
Fig. 6 shows a recess 47 of the sealing disk 27, into which the bobbin 13 extends with an axially projecting clamping body 49. In the central region of the sealing disk 27, the recess 47 is delimited by a web 51 which surrounds the coil conductors and also has a sealing region 45. The web 51 has an outer contour similar to 8. The contour is furthermore produced by two annular envelopes of the coil strands 33, which are combined to form the web 51.
Furthermore, the pocket 47 of the sealing disk 27 is delimited by an outer annular wall 53 having at least one sealing surface 29 with respect to the coil housing 3. This sealing surface 29 also has a circumferential sealing lip. The clamping body 49 of the bobbin 13 has a circular side surface 55 preloading the outer annular wall. The inner contour of the clamping body 49 describes the 8 for receiving the web 51 formed by the envelope in the central region of the sealing disk 27.
Overall, the recess 47 of the sealing disc 27 has a cross-sectional profile which thus forms an anti-rotation means with the clamping body 49 of the bobbin 13. Therefore, in the presence of a torsional load on the seal disk 27, for example, during mounting of the coil mechanism 1 in the coil housing 3, no load is transmitted to the coil strands 33.
In addition, the sealing disk 27 may have a circumferential flange 57 by which the sealing disk 27 can be fixed relative to the coil housing 3 at least in the circumferential direction and which stabilizes the sealing disk 27 as a whole since the sealing disk 27 is preferably entirely composed of an elastomer.
Furthermore, the sealing disk 27 has a top surface 61 on the side facing away from the bottom 59 of the recess 47, on which a connector 63 for connecting the coil conductor 11 to the supply line 23 is supported. The base 59 of the sealing disc 27 connects the central web 51 and the outer annular wall 53. The bottom 59, and thus also the top surface 61, is continuous, except for the through openings 31 for the coil strands 33.
In this exemplary embodiment, the connector 63 does not take over the electrical connection between the supply line 23 and the coil strands 33, but rather the connector 65 for carrying the supply line 23 within the rod 5 is aligned with respect to the rotation of the coil strands 33. To this end, the connector 63 has a twist contour 67 into which a mating contour 69 of the connector 65 of the supply line 23 engages, with the result that the connector 65 of the supply line 23 is aligned in the circumferential direction relative to the coil strands 33 pressed into the receptacles 71 in the carrier bar 5.
The connector 63 of the coil mechanism 1 is held in a fixed position relative to the coil housing 3 with the seal disk 27 disposed therebetween. For this purpose, the bottom 59 of the sealing disk 27 acts as a spring to compensate for any tolerance deviations on the components involved.
During assembly, the damper valve 7 and the actuator 17 are preassembled as a separate subassembly. The coil mechanism 1 is wound with the coil wire 11, the coil strands 33 are connected to the coil wire 11 and encapsulated by the bridge 35. The return path body 15 having the radial slots 73 for receiving the bridges 35 is placed on the end of the bobbin 13 directed in the direction of the coil housing 3. The bridge 35 and the return path body 15 form a common plane in the direction of the bottom 19 of the coil housing 3, ensuring that the return path body 15 bears against the bottom 19 of the coil housing 3 over a large area.
The sealing disk 27 is placed on the coil strand 33 until the clamping body 49 of the coil arrangement 1 engages in a rotationally fixed manner in the recess 47 of the sealing disk 27. Thereafter, the connector 63 is pushed onto the coil strand 33 until the connector 63 rests on the outer top surface 61. This structural unit is then screwed into the coil housing 3 until the connector 63 rests with its circumferential annular web 75 against a recess 77 of the coil housing 3 in the region of the through-opening 25. The actuator 17 and the damper valve 7 are then assembled. With the damper valve 7 installed, the coil mechanism 1 is fixed in the coil housing 3 in the axial direction. In this process, the bottom 59 of the sealing disk 27 also bears against the connector 63, whereby this connector is secured without play in the axial and circumferential directions. As a result, the clip body 49 of the coil mechanism 1 has penetrated to the maximum depth in the pocket 47 of the seal disk 27, and the seal disk 27 is preloaded onto both the coil strands 33 and the wall of the coil housing 3.
Thereafter, the carrier rod 5, to which the connector 65 with the supply line 23 has been mounted, is placed on the axially offset end face 79 of the coil housing 3. In this case, the connector 65 of the supply line 23 is slid into the connector 63 of the coil mechanism 1, and due to the compatible configuration of the end faces of the two connectors, the connector 65 of the supply line 23 is rotated in the circumferential direction until the connector 65 of the supply line 23 can receive the coil strand 33.
In a further assembly step, the carrier bar 5 is connected to the coil housing 3 via a circumferential weld 81. As can be seen from fig. 3 and 4, there is at least a narrow annular gap 83 between the socket 71 of the connector 65 and the through-opening 31 in the coil housing 3, so that the process heat generated by the weld seam does not have a negative influence on the electrical connection between the supply line 23 and the coil arrangement 1. In contrast, the use of laser welding as the preferred welding method generally results in only a very small amount of heat being introduced into the coil housing 3.
Reference numerals
1 coil mechanism
3 coil shell
5 bearing rod
7 damping valve
9 Cylinder body
11 coil conductor
13 bobbin
15 return path body
17 actuator
19 bottom part
21 coil connection
23 supply line
25 through opening
27 sealing disc
29 sealing surface
31 through opening
33 coil strand
35 bridge piece
37 flange
39 leg of coil strand
41 vertical leg of coil strand
43 clamping surface
45 sealing area
47 sink
49 clamping body
51 Web
53 annular wall
55 side surface
57 flange
59 bottom part
61 top surface
63 connector
65 connector
67 twisted profile
69 mating profile
71 socket
73 radial groove
75 Ring web
77 concave part
79 end face
81 weld
83 annular gap

Claims (11)

1. A coil mechanism (1) comprising a bobbin (13) wound with a conductive coil wire (11) and connected to a supply line (23) via at least one coil connection (21), wherein the coil arrangement (1) is fixed in a coil housing (3) which is connected to a hollow carrier rod (5) in which the supply line (23) extends, wherein the coil arrangement (1) is sealed both with respect to the coil housing (3) and with respect to the supply line (23), characterized in that the coil arrangement (1) has a sealing disc (27) which is separate from the bobbin (13) and seals the coil conductors (11; 33) over a length section outside the bobbin (13), and the sealing disk has at least one sealing surface (29) relative to the coil housing (3).
2. A coil arrangement according to claim 1, wherein the conductive coil leads (11) are connected to coil strands (33) of enlarged cross-section passing through the sealing disk (27).
3. A coil arrangement according to claim 1 or 2, characterized in that the bobbin (13) has at least one clamping surface (43) which preloads a sealing region (45) of the sealing disk (27) onto the coil conductor (11; 33).
4. Coil mechanism according to claim 1 or 2, wherein the sealing disc (27) has a recess (47) into which the bobbin (13) extends.
5. Coil mechanism according to claim 4, characterized in that the recess (47) is delimited by a web (51) which surrounds the coil conductor (11; 33) and has the sealing region (45).
6. A coil arrangement according to claim 4, wherein the recess (47) is delimited by an outer annular wall (53) having the at least one sealing surface (29) with respect to the coil housing (3).
7. A coil arrangement according to claim 4, characterized in that the recess (47) of the sealing disc (27) has a cross-sectional profile forming an anti-rotation means with the clamping body (49) of the bobbin (3).
8. A coil arrangement according to claim 2, characterized in that the sealing disk (27) has a circumferential flange (57) via which the sealing disk (27) is fixed at least in the circumferential direction relative to the coil housing (3).
9. A coil arrangement as claimed in claim 2, characterized in that the sealing disk (27) has a top surface (61) on which a connector (63) for connecting the coil conductor (11; 33) to the supply line (23) is supported.
10. A coil arrangement according to claim 9, characterized in that the connector (63) is held in a fixed position relative to the coil housing (3), wherein the sealing disc (27) is arranged between the connector and the coil housing.
11. A coil arrangement according to claim 2, wherein the sealing disc (27) is entirely composed of an elastomeric material.
CN202210197724.4A 2021-03-01 2022-03-01 Coil mechanism for adjustable damping valve Pending CN114999763A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021201889.0A DE102021201889B3 (en) 2021-03-01 2021-03-01 Coil arrangement for an adjustable damping valve
DE102021201889.0 2021-03-01

Publications (1)

Publication Number Publication Date
CN114999763A true CN114999763A (en) 2022-09-02

Family

ID=82116567

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210197724.4A Pending CN114999763A (en) 2021-03-01 2022-03-01 Coil mechanism for adjustable damping valve

Country Status (3)

Country Link
KR (1) KR20220123587A (en)
CN (1) CN114999763A (en)
DE (1) DE102021201889B3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103861A1 (en) 1991-02-08 1992-08-13 Bosch Gmbh Robert Conduit through shock-absorber passage - having pin melted in glass with conduit soldered on either side of pin, passed through dividing wall between two chambers
DE4135234A1 (en) 1991-10-25 1993-04-29 Bosch Gmbh Robert WIRING
US6422360B1 (en) 2001-03-28 2002-07-23 Delphi Technologies, Inc. Dual mode suspension damper controlled by magnetostrictive element
DE102006023315B4 (en) 2006-05-18 2008-04-03 Stabilus Gmbh Device for lifting a flap pivotable about a pivot axis
DE102012203542B4 (en) 2012-03-07 2016-06-23 Zf Friedrichshafen Ag Adjustable damping valve
DE102016205651A1 (en) 2016-04-06 2017-10-12 Zf Friedrichshafen Ag Adjustable damper valve device for a vibration damper

Also Published As

Publication number Publication date
KR20220123587A (en) 2022-09-08
DE102021201889B3 (en) 2022-07-14

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