GB2568456A - A valve with a serrated edge design in air spring suspension unit - Google Patents
A valve with a serrated edge design in air spring suspension unit Download PDFInfo
- Publication number
- GB2568456A GB2568456A GB1715600.1A GB201715600A GB2568456A GB 2568456 A GB2568456 A GB 2568456A GB 201715600 A GB201715600 A GB 201715600A GB 2568456 A GB2568456 A GB 2568456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- valve
- chambers
- grooves
- air spring
- 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.)
- Granted
Links
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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/048—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs
- B60G17/0485—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs the springs being pneumatic springs with a flexible wall, e.g. with levelling valves
-
- 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
- F16F9/344—Vortex flow passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/204—Pressure regulating valves for air-springs
- B60G2500/2041—Pressure regulating valves for air-springs for variable volume air springs, e.g. using accumulators as expansion chambers
-
- 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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A valve in combination with an air spring suspension unit having one main and at least one secondary air chamber, comprising a valve body 12a connecting said main and secondary chambers, wherein each of said air chambers are communicated through at least one passage (4a, 8a) of the valve, and the passage means having grooves 10a and serrations 11a created on the inner surface, thus guiding the air with reduced noise between the air spring chambers of the air spring suspension unit, the said grooves having the role of guiding the air in order to obtain a laminar flow for the air flowing through the valve.
Description
04 19
Figure 4
4/6
04 19
Figure 5
5/6
04 19
Figure 6
6/6
Figure 7
04 19
Figure 8
Description
A valve with a serrated edge design in air spring suspension unit
Field of the invention [0001] This invention relates to a. valve with a serrated edge design disposed between the air chambers of an air spring suspension unit which assure a reduced noise generated by the movement of the air flow.
Background of the Invention [0002] Commonly an air spring suspension unit have two air chambers filled with compressed air which communicate each other through a valve. One of the two chambers is considered the main air chamber and ussually surrond an upper portion of an shock absorber while the second chamber is considered the auxiliarry air chamber and the communication between them allows the change of the air volumes in the air chambers so that the spring constant of the air spring suspension unit is modified in corcondance with road and travel conditions. When the valve body is allowing the communication between the air chambers the volumes of the main air chamber increases and decreases very quickly conjuctively with the movement of the shock absorber due to the impact with the road surface so as to allow high volume inflow and outflow with high speed of the air through the valve body. Because of this fact the noise generated by the air flow may be high and can cause an uncomfortable feeling to the vehicle passengers.
[0003] Document US 9428029 B2 disclose an air spring module including an air spring and a shock absorber for springing and damping vibrations of a motor vehicle chassis, including at least two working chambers filled with compressed air and connectable via at least one valve, an air spring cover, a rolling bellows fixed to the air spring cover in an air-tight manner and at least partly delimits a first working chamber filled with compressed air, and a rolling piston, which is fixed to a cylindrical tube of the shock absorber and on which the rolling bellows rolls. A second and a third working chamber are arranged one above the other in the rolling piston so as to surround the cylindrical tube. The working chambers are separated from each other by an intermediate floor provided in the rolling piston and can be connected to the first working chamber via switchable valves arranged in the rolling piston.
[0004] Document US4712775A disclose a construction of a control valve for an air suspension assembly having main and auxiliary air chambers and which include a boundary member disposed between the main and auxiliary air chambers and provided with a path for communicating both air chambers and a valve body disposed in the path. The path or the valve body includes a first path portion and a second path portion having a bore smaller than that of the first path portion. A perforated member is provided in relation with the second path portion of the path or valve body.
[0005] In the air springs with multiple chambers of state of the art is most often used a foam material to reduce noise occurring from the air traveling between the air spring chambers. The problem associated with state of the art is the necessity of these foam parts which imply constructive complexity, shaping operations and supplementary costs.
Summary of the Invention [0006] The present invention solve the above presented problem of the state of the art by a new design of a valve disposed between the chambers of an air spring suspension unit . A. valve with a new design disposed between the chambers of an air spring suspension unit add new elements to the state of the art design of an valve of this type. The new elements added are serrations, grooves or other geometries created on the inner surface of the valve and thus directing the air more easily and with reduced noise between the air spring chambers of the air spring suspension unit.
Brief Description of the Drawings [0007] Further features, benefits, and embodiments of the invention will become apparent by consideration of the following description using figures in which schematically:
Fig.l shows a drawing of an embodiment of the present invention whit a front view la and top view 2a of a valve disposed between the chambers of an air spring suspension unit with straight grooves finished with serrations
Fig.2 shows a drawing of an embodiment of the present invention whit an angle view 13a and lateral view 14a of a valve disposed between the chambers of an air spring suspension unit with straight grooves finished with serrations
Fig. 3 shows a drawing with a detailed view 14a of the lateral view 13a for a valve disposed between the chambers of an air spring suspension unit highlighting the form of the serrations
Fig.4 shows a drawing with a detailed view 15a of the lateral view 13a for a valve disposed between the chambers of an air spring suspension unit highlighting the form of the straight grooves finished with serrations
Fig. 5 shows a drawing of an embodiment of the present invention whit a front view lb and top view 2b of a valve disposed between the chambers of an air spring suspension unit with arched grooves finished with serrations
Fig. 6 shows a drawing of an embodiment of the present invention whit an angle view 13b and lateral view 14b of a valve disposed between the chambers of an air spring suspension unit with arched grooves finished with serrations
Fig.7 shows a drawing with a detailed view 14b of the lateral view 13b for a valve disposed between the chambers of an air spring suspension unit highlighting the form of the serrations at the end of the straight grooves
Fig.8 shows a drawing with a detailed view 15b of the lateral view 13b for a valve disposed between the chambers of an air spring suspension unit highlighting the form of the arched grooves finished with serrations
Numbering of the elements in drawings [0008] The figures Fig.l, Fig.2, Fig.3, Fig.4 presents the elements and components of a valve disposed between the chambers of an air spring suspension unit with straight grooves finished with serrations. In the drawings presented by the figures Fig.l, Fig.2, Fig.3, Fig.4 the elements and components named below are designated by the following numbers and characters:
la - Front view of a valve disposed between the chambers of an air spring suspension unit embodying the invention showing the forms of straight grooves finished with serrations
2a - Top view of a valve disposed between the chambers of an air spring suspension unit embodying the invention including the straight grooves finished with serrations
3a, 6a, 12a - Valve body
4a, 8a - The passage with connection area between the air spring suspension unit chambers
5a , 9a - Valve base area
7a - Spacers
10a - Grooves
11a - Serrations
13a - Angle view of a valve disposed between the chambers of an air spring suspension unit embodying the invention showing the forms of straight grooves finished with serrations
14a - Lateral view of a valve disposed between the chambers of an air spring suspension unit embodying the invention including the straight grooves finished with serrations a - Detailed view of the serrations of a valve disposed between the chambers of an air spring suspension unit embodying the invention and showing the forms of the serrations a - Detailed view of the channels of a valve disposed between the chambers of an air spring suspension unit embodying the invention and showing the forms of straight grooves finished with serrations [0009] The figures Fig.5, Fig.6, Fig.7, Fig.8 presents the elements and components of a valve disposed between the chambers of an air spring suspension unit with arched grooves finished with serrations. In the drawings presented by the figures Fig.5, Fig.6, Fig.7, Fig.8 the elements and components named below are designated by the following numbers and characters:
lb - Front view of a valve disposed between the chambers of an air spring suspension unit embodying the invention showing the forms of arched grooves finished with serrations
2b - Top view of a valve disposed between the chambers of an air spring suspension unit embodying the invention including the arched grooves finished with serrations
3b, 6b, 12b - Valve body
4b, 8b - The passage with connection area between the air spring suspension unit chambers
5b, 9b - Valve base area
7b - Spacers
10b - G r ο o v e s lib - Serrations
13b - Angle view of a valve disposed between the chambers of an air spring suspension unit embodying the invention showing the forms of arched grooves finished with serrations
14b - Lateral view of a valve disposed between the chambers of an air spring suspension unit embodying the invention including the arched grooves finished with serrations
15b - Detailed view of the serrations of a valve disposed between the chambers of an air spring suspension unit embodying the invention and showing the forms of the serrations
16b - Detailed view of the channels of a valve disposed between the chambers of an air spring suspension unit embodying the invention and showing the forms of arched grooves finished with serrations
Detailed Description [0010] The solution provided by the present invention to solve the problem of the state of the art which implies the use of a foam material in order to reduce the noise occurring from the air traveling between the air spring chambers, is to use the some geometries created on the existing parts of the valve in the air spring. The solution would consist of creating serrations, grooves or other geometry in the channels that lead the air between the air spring chambers.
[0011] Implementation of the solution disclosed by the present invention would respond to the necessity of eliminating the noise made by air circulation inside the air springs, but without the need for added foam parts. This new design represents a constructive advantage and at the same time a cost advantage.
[0012] The serrations of the design disclosed by the present invention could be adjusted geometrically for certain air flows and the seal of the valve would not be affected because the serrations are opposite the valve seat. In addition the grooves of the design disclosed by the present invention have a role in guiding the fluid in order to obtain a laminar flow for the fluid flowing through the valve.
[0013] As shown by the drawings of the Fig.l a valve has a valve body 3a,6a, a passage with connection area 4a,8a between the air spring suspension unit chambers and spacers 7a which bind together the valve body 6a with valve base area 9a. The drawings of the Fig. 2 shows the implementation of the actual invention with grooves 10a and serrations 11a created on the inner surface of the passage of the valve with the goal to conduct the air much easier through the valve and thus producing a laminar flow for the fluid flowing through the valve. The drawing of the Fig.3 shows in a detailed view how the serrations are executed at the end of the grooves .The drawing of the Fig.4 shows the form of the grooves which in this case is straight.
[0014] The form of the grooves created on the inner surface on the inner surface of the passage of the valve may be arched but the constructive principle of the valve will not change compared to the valve which has straight grooves. As shown by the drawings of the Fig 5 valve with arched grooves has a valve body 3b ,6b a passage with connection area 4b,8b between the air spring suspension unit chambers and spacers 7b which bind together the valve body 6b with valve base area 9b. The drawings of the Fig. 6 shows the implementation of the actual invention with arched grooves 10b and serrations lib created on the inner surface of the passage of the valve with the goal to conduct the air much easier through the valve and thus producing a laminar flow for the fluid flowing through the valve. The drawing of the Fig.7 shows in a detailed view how the serrations are executed at the 5 end of the arched grooves. The drawing of the Fig. 8 shows the form of the grooves which in this case is arched.
Claims (2)
1. A valve in combination with an air spring suspension unit having one main and at least one secondary air chamber comprising:
a valve body which connects said main air chamber and secondary air chambers wherein each of said air chambers are communicated through at least one passage of the valve; and the passage means for communicating between air chambers having grooves and serrations created on the inner surface and thus leading the air with reduced noise between the air spring chambers of the air spring suspension unit;and the said grooves have the role of guiding the fluid in order to obtain a laminar flow for the fluid flowing through the valve.
2. A construction of a valve as claimed in claim 1, wherein
15 said grooves created on the inner surface have a straight or arched shape.
Intellectual Property Office
Application No: GB1715600.1
Claims searched: 1-4
Examiner: Mr Ben Hampson
Date of search: 16 March 2018
Patents Act 1977: Search Report under Section 17
Documents considered to be relevant:
Category
Relevant to claims
Identity of document and passage or figure of particular relevance
A
-
CN 102213287 A
(MINGCHAO) See whole document.
A
-
CN 201496465 U
(PING et al.) See whole document.
A
-
KR 101100320 Bl
(JUNG) See whole document
Categories:
X
Document indicating lack of novelty or inventive step
A
Document indicating technological background and/or state of the art.
Y
Document indicating lack of inventive step if
P
Document published on or after the declared priority date but
combined with one or more other documents of
before the filing date of this invention.
same category.
&
Member of the same patent family
E
Patent document published on or after, but with priority date
earlier than, the filing date of this application.
Field of Search:
Search of GB, EP, WO & US patent documents classified in the following areas of the UKCX :
2. A construction of a valve as claimed in claim 1, wherein said grooves created on the inner surface may have a straight or arched shape .
3. A control valve in combination with an air spring suspension unit having one main and at least one secondary air chamber comprising :
a control valve body which connects said main air chamber and secondary air chambers wherein each of said air chambers are communicated through at least one passage of the control valve wherein each of said air chambers are communicated through at least one passage when said valve body is in a predetermined position; and the passage means for communicating between air chambers having grooves and serrations created on the inner surface and thus leading the air with reduced, noise between the air spring chambers of the air spring suspension unit; and the said grooves have the role of guiding the fluid in order to 5 obtain a laminar flow for the fluid flowing through the valve.
4. A construction of a control valve claimed in claim 3, wherein said grooves created on the inner surface may have a straight or arched shape.
Amendments to claims have been filed as follows
Patent claims
1. A valve in combination with an air spring suspension unit having one main and at least one secondary air chamber compri5 sing:
a valve body which connects said main air chambers wherein each of said air
air chamber a chambers a re
ind secondary
commonic
::ated
through at least one passage of the
valve; and
10
the passage means for communicating
between air c
hambers
ha-
vincf grooves and serrations created
on the inner
surface
1306 18
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1715600.1A GB2568456B (en) | 2017-09-27 | 2017-09-27 | A valve with a serrated edge design in air spring suspension unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1715600.1A GB2568456B (en) | 2017-09-27 | 2017-09-27 | A valve with a serrated edge design in air spring suspension unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201715600D0 GB201715600D0 (en) | 2017-11-08 |
| GB2568456A true GB2568456A (en) | 2019-05-22 |
| GB2568456B GB2568456B (en) | 2019-12-18 |
Family
ID=60244503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1715600.1A Active GB2568456B (en) | 2017-09-27 | 2017-09-27 | A valve with a serrated edge design in air spring suspension unit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2568456B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201496465U (en) * | 2009-06-30 | 2010-06-02 | 隆昌山川精密焊管有限责任公司 | Piston used for gas spring |
| CN102213287A (en) * | 2011-05-24 | 2011-10-12 | 扬州市明瑞气弹簧有限公司 | Throttle buffering gas spring |
| KR101100320B1 (en) * | 2011-08-26 | 2011-12-30 | 정재경 | Operating method of gas spring damper installing lock |
-
2017
- 2017-09-27 GB GB1715600.1A patent/GB2568456B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201496465U (en) * | 2009-06-30 | 2010-06-02 | 隆昌山川精密焊管有限责任公司 | Piston used for gas spring |
| CN102213287A (en) * | 2011-05-24 | 2011-10-12 | 扬州市明瑞气弹簧有限公司 | Throttle buffering gas spring |
| KR101100320B1 (en) * | 2011-08-26 | 2011-12-30 | 정재경 | Operating method of gas spring damper installing lock |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201715600D0 (en) | 2017-11-08 |
| GB2568456B (en) | 2019-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102016347B (en) | Buffer device | |
| EP3015736B1 (en) | Shock absorber | |
| JP6279759B2 (en) | Shock absorber | |
| JP6838372B2 (en) | Damping force adjustment mechanism | |
| EP3067584B1 (en) | Vehicle suspension system | |
| EP3002478B1 (en) | Shock absorber with a combination of a fail-safe and check-valve | |
| JPH10252803A (en) | Shock absorber | |
| JP2009079710A (en) | Damping force adjusting structure of hydraulic shock absorber | |
| JP5662862B2 (en) | Shock absorber | |
| JP4137541B2 (en) | Hydraulic shock absorber for vehicles | |
| JP2003014026A (en) | Front fork | |
| WO2020179682A1 (en) | Shock absorber | |
| GB2568456A (en) | A valve with a serrated edge design in air spring suspension unit | |
| US11047445B2 (en) | Damper with dual pistons | |
| JP2018535373A (en) | Shock absorber with improved piston configuration | |
| CN113474582A (en) | Buffer device | |
| JP6628144B2 (en) | Valve mechanism, damping force generator, and shock absorber | |
| JP5368858B2 (en) | damper | |
| US20220268335A1 (en) | Shock absorber | |
| JP4443030B2 (en) | Hydraulic shock absorber valve structure | |
| US4475635A (en) | Vortex flow shock absorber with one-way valve | |
| JPH07174183A (en) | Hydraulic shock absorber | |
| JP4181948B2 (en) | Front fork | |
| WO2020179681A1 (en) | Damper | |
| KR102610749B1 (en) | Vehicle shock absorber |