Resilient compression spring with load tuning feature and associated tuning method
阅读说明:本技术 具有载荷调谐特征的弹性压缩弹簧和相关的调谐方法 (Resilient compression spring with load tuning feature and associated tuning method ) 是由 N·B·姆哈 J·J·艾伯特 D·R·路丁 于 2019-07-01 设计创作,主要内容包括:本发明公开了具有载荷调谐特征的弹性压缩弹簧和相关的调谐方法,提供一种用于隔离第一零件和第二零件之间的振动的弹性压缩弹簧。该第一零件在相对于第二零件的方向上可移动。该弹性压缩弹簧包括管道,该管道沿管道的中心轴线伸长。管道的中心轴线垂直于该方向。管道经配置在该方向上压缩。管道包括外表面,该外表面包括经配置初始接收与第一零件的接触的初始接触线。管道进一步包括在外表面中、平行于中心轴线并且与初始接触线周向隔开的至少一个载荷调谐特征。该至少一个载荷调谐特征在至少一个载荷调谐特征处引起管道的厚度和弹性压缩弹簧的刚度的局部改变。(The invention discloses a resilient compression spring with load tuning features and an associated tuning method, providing a resilient compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The resilient compression spring includes a tube that is elongated along a central axis of the tube. The central axis of the pipe is perpendicular to this direction. The conduit is configured to compress in this direction. The pipe includes an outer surface including an initial line of contact configured to initially receive contact with the first part. The conduit further includes at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced from the initial contact line. The at least one load tuning feature causes a local change in a thickness of the tubing and a stiffness of the resilient compression spring at the at least one load tuning feature.)
1. A resilient compression spring (110) for isolating vibrations between a first part (102) and a second part (104), wherein the first part (102) is movable in a direction (106) relative to the second part (104), the resilient compression spring (110) comprising:
a conduit (112) elongated along a central axis (122) of the conduit (112), wherein:
the central axis (122) of the pipe (112) being perpendicular to the direction (106);
the conduit (112) is configured to compress in the direction (106);
the pipe (112) comprises an outer surface (117), the outer surface (117) comprising an initial contact line (136) configured to initially receive contact with the first part (102);
the pipe (112) further comprising at least one groove (120), the at least one groove (120) being formed in the outer surface (117), parallel to the central axis (122), and circumferentially spaced from the initial contact line (136); and
the at least one groove (120) causes a local reduction of the thickness (T) of the pipe (112) and the stiffness of the resilient compression spring (110) at the at least one groove (120).
2. The resilient compression spring (110) of claim 1, wherein the tube (112) further comprises two grooves (120) formed in the outer surface (177) of the tube (112) on opposite sides of the initial contact line (136).
3. The resilient compression spring (110) of claim 2, wherein the two grooves (120) are circumferentially spaced the same distance from the initial contact line (136).
4. The resilient compression spring (110) of claim 2, wherein:
the tube (112) further comprises four grooves (120) formed in the outer surface (117) of the tube (112); and
two of the four grooves (120) are located on the opposite side of the initial contact line (136) from the other two of the four grooves (120).
5. The resilient compression spring (110) according to any one of claims 1-4, wherein:
the outer surface (117) of the pipe (112) has a curved convex shape; and
the at least one groove (120) has a curved concave shape.
6. The resilient compression spring (110) of any of claims 1-4 wherein the tube (112) is made of a thermoplastic elastomer.
7. The resilient compression spring (110) according to any one of claims 1-4, wherein the thickness (T) of the tube (112) decreases and increases along the at least one groove (120) when moving in a circumferential direction along the tube (112) towards the initial contact line (136).
8. The resilient compression spring (110) according to any one of claims 1-4, wherein:
the depth (D) of said at least one groove (120) corresponds to a decreasing amplitude of the load-displacement rate of said elastic compression spring (110);
the length (L) of the at least one groove (120) corresponds to a displacement range of the pipe (112) during which the load-displacement rate decreases; and
the circumferential distance (d) of said at least one groove (120) from said initial contact line (136) corresponds to a displacement of said pipe (112) at which said load-displacement rate of said elastic compression spring (110) starts to decrease.
9. A method (200) of tuning an elastic compression spring (110), the method (200) comprising:
identifying at least one difference between a desired load-displacement performance and an actual load-displacement performance of the resilient compression spring;
determining a desired local reduction in load-displacement rate that begins at a desired first displacement and ends at a desired second displacement and that corresponds to the at least one difference between the desired load-displacement performance and the actual load-displacement performance; and
updating at least one groove formed in an outer surface of a tube of the resilient compression spring in accordance with the desired localized reduction in the load-displacement rate to achieve the desired load-displacement performance.
10. The method (200) of claim 9, wherein the resilient compression spring (110) is renewed such that:
the depth (D) of the at least one groove (120) corresponds to the magnitude of the desired local reduction in the load-displacement rate;
a circumferential distance (d) of the at least one groove (120) from an initial contact line (136) of the pipe (112) corresponds to the desired first displacement; and
the length (L) of the at least one groove (120) corresponds to the desired second displacement.
Technical Field
The present disclosure relates generally to vibration isolators and, more particularly, to resilient compression springs.
Background
In some applications, a resilient compression spring is used to isolate the vibrations. Such resilient compression springs are configured to isolate vibrations according to the load-displacement performance and frequency response of the resilient compression spring. It can be difficult to manufacture a resilient compression spring that achieves a particular load-displacement performance without requiring excessive trial and error iterations.
Disclosure of Invention
The subject of the present application was developed in response to the drawbacks of the prior art, in particular of the elastic compression springs and the related manufacturing methods, which have not yet been fully solved by currently available techniques. Accordingly, the subject matter of the present application has been developed to provide examples of resilient compression springs and related methods of manufacturing resilient compression springs that overcome at least some of the above-discussed shortcomings in the art.
An elastic compression spring for isolating vibrations between a first part and a second part is disclosed. The first part is movable in a direction relative to the second part. The resilient compression spring comprises a tube that is elongated along a central axis of the tube. The central axis of the pipe is perpendicular to this direction. The conduit is configured to compress in this direction. The pipe includes an outer surface including an initial line of contact configured to initially receive contact with the first part. The conduit further includes at least one groove formed in the outer surface, parallel to the central axis, and circumferentially spaced from the initial contact line. The at least one groove causes a local reduction in the thickness of the tube and the stiffness of the resilient compression spring at the at least one groove. The foregoing subject matter of this paragraph describes example 1 of the present disclosure.
The pipe further comprises two grooves formed in the outer surface of the pipe on opposite sides of the initial line of contact. The foregoing subject matter of this paragraph describes example 2 of the present disclosure, where example 2 further includes the subject matter described in accordance with example 1 above.
The two grooves are circumferentially spaced the same distance from the initial line of contact. The foregoing subject matter of this paragraph describes example 3 of the present disclosure, wherein example 3 further includes the subject matter described in accordance with example 2 above.
The tube further includes four grooves formed in an outer surface of the tube. Two of the four grooves are located on the opposite side of the initial contact line from the other two of the four grooves. The foregoing subject matter of this paragraph describes example 4 of the present disclosure, wherein example 4 further includes the subject matter of any of examples 2 or 3 above.
The outer surface of the pipe has a curved convex shape. At least one groove has a curved concave shape. The foregoing subject matter of this paragraph describes example 5 of the present disclosure, wherein example 5 further includes the subject matter of any of examples 1-4 above.
The pipe is made of a thermoplastic elastomer. The foregoing subject matter of this paragraph describes example 6 of the present disclosure, wherein example 6 further includes the subject matter of any of examples 1-5 above.
The thickness of the pipe decreases and increases along the at least one groove when moving along the pipe in a circumferential direction towards the initial contact line. The foregoing subject matter of this paragraph describes example 7 of the present disclosure, wherein example 7 further includes the subject matter of any of examples 1-6 above.
The depth of the at least one groove corresponds to the magnitude of the reduction in the load-displacement rate of the resilient compression spring. The length of the at least one groove corresponds to a displacement range of the pipe during which the load-displacement rate decreases. The circumferential distance of the at least one groove from the initial contact line corresponds to the displacement of the pipe at which the load-displacement rate of the resilient compression spring begins to decrease. The foregoing subject matter of this paragraph describes example 8 of the present disclosure, wherein example 8 further includes the subject matter of any of examples 1-7 above.
Also disclosed herein is a resilient compression spring for isolating vibration between a first part and a second part. The first part is movable in a direction relative to the second part. The resilient compression spring comprises a tube that is elongated along a central axis of the tube. The central axis of the pipe is perpendicular to this direction. The conduit is configured to compress in the direction. The pipe includes an outer surface including an initial line of contact configured to initially receive contact with the first part. The conduit further includes at least one rib formed in the outer surface, parallel to the central axis, and circumferentially spaced from the initial contact line. The at least one rib causes a local increase in the thickness of the tube and the stiffness of the resilient compression spring at the at least one rib. The foregoing subject matter of this paragraph describes example 9 of the present disclosure.
The pipe further comprises two ribs formed in the outer surface of the pipe on opposite sides of the initial line of contact. The foregoing subject matter of this paragraph describes example 10 of the present disclosure, where example 10 further includes the subject matter recited in example 9 above.
The two ribs are circumferentially spaced the same distance from the initial line of contact. The foregoing subject matter of this paragraph describes example 11 of the present disclosure, wherein example 11 further includes the subject matter recited in example 10 above.
The tube further includes four ribs formed in an outer surface of the tube. Two of the four ribs are located on the opposite side of the initial line of contact from the other two of the four ribs. The foregoing subject matter of this paragraph describes example 12 of the present disclosure, wherein example 12 further includes the subject matter of any of examples 10 or 11 above.
The outer surface of the pipe has a curved convex shape. At least one rib has a curved convex shape with a radius of curvature less than a radius of curvature of the curved convex shape of the outer surface of the pipe. The foregoing subject matter of this paragraph describes example 13 of the present disclosure, wherein example 13 further includes the subject matter of any of examples 9-12 above.
The pipe is made of a thermoplastic elastomer. The foregoing subject matter of this paragraph describes example 14 of the present disclosure, wherein example 14 further includes the subject matter of any of examples 9-13 above.
The thickness of the pipe increases and decreases along the at least one rib when moving along the pipe in a circumferential direction towards the initial contact line. The foregoing subject matter of this paragraph describes example 15 of the present disclosure, wherein example 15 further includes the subject matter of any of examples 9-14 above.
The height of the at least one rib corresponds to the magnitude of the increment in the load-displacement rate of the resilient compression spring. The length of the at least one rib corresponds to a displacement range of the pipe during which the load-displacement rate increases. The circumferential distance of the at least one rib from the initial contact line corresponds to a displacement of the pipe at which the load-displacement rate of the resilient compression spring begins to increase. The foregoing subject matter of this paragraph describes example 16 of the present disclosure, wherein example 16 further includes the subject matter of any of examples 9-15 above.
A method of tuning a resilient compression spring is additionally disclosed herein. The method includes identifying at least one difference between a desired load-displacement behavior and an actual load-displacement behavior of the resilient compression spring. The method also includes determining a desired local reduction in the load-displacement rate that begins at the desired first displacement and ends at the desired second displacement and that corresponds to at least one difference between the desired load-displacement performance and the actual load-displacement performance. The method further includes renewing at least one groove formed in an outer surface of the tube of the resilient compression spring in accordance with the desired localized reduction in the load-displacement rate to achieve a desired load-displacement performance. The foregoing subject matter of this paragraph describes example 17 of the present disclosure.
The resilient compression spring is renewed such that the depth of the at least one groove corresponds to the amplitude of the desired local reduction in the load-displacement rate, such that the circumferential distance of the at least one groove from the initial contact line of the pipe corresponds to the desired first displacement, and such that the length of the at least one groove corresponds to the desired second displacement. The foregoing subject matter of this paragraph describes example 18 of the present disclosure, wherein example 18 further includes the subject matter recited in example 17 above.
A method of tuning an elastic compression spring is also disclosed herein. The method includes identifying at least one difference between a desired load-displacement behavior and an actual load-displacement behavior of the resilient compression spring. The method also includes determining a desired local increase in the load-displacement rate that begins at the desired first displacement and ends at the desired second displacement and that corresponds to at least one difference between the desired load-displacement performance and the actual load-displacement performance. The method further includes refreshing at least one rib formed in an outer surface of the tube of the resilient compression spring in accordance with the desired localized increase in load-displacement rate to achieve a desired load-displacement performance. The foregoing subject matter of this paragraph describes example 19 of the present disclosure.
The resilient compression spring is updated such that the height of the at least one rib corresponds to the magnitude of the desired local increase in load-displacement rate, such that the circumferential distance of the at least one rib from the initial line of contact of the pipe corresponds to the desired first displacement, and such that the length of the at least one rib corresponds to the desired second displacement. The foregoing subject matter of this paragraph describes example 20 of the present disclosure, wherein example 20 further includes the subject matter recited in example 19 above.
The described features, structures, advantages, and/or characteristics of the subject matter of the present disclosure may be combined in any suitable manner in one or more examples and/or embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of examples of the subject matter of the present disclosure. One skilled in the relevant art will recognize that the subject matter of the present disclosure may be practiced without one or more of the specific features, details, components, materials, and/or methods of a particular example or embodiment. In other instances, additional features and advantages may be recognized in certain examples and/or embodiments that may not be present in all examples or embodiments. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosed subject matter. The features and advantages of the disclosed subject matter will become more fully apparent from the following description and appended claims, or may be learned by the practice of the subject matter as set forth hereinafter.
Drawings
In order that the advantages of the subject matter will be readily understood, a more particular description of the subject matter briefly described above will be rendered by reference to specific examples that are illustrated in the appended drawings. Understanding that these drawings depict only typical examples of the subject matter and are not therefore to be considered to be limiting of its scope, the subject matter will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
fig. 1 is a perspective view of a resilient compression spring according to one or more examples of the present disclosure;
FIG. 2 is a front view of the resilient compression spring of FIG. 1 between two pieces according to one or more examples of the present disclosure;
FIG. 3 is an elevation view of the resilient compression spring of FIG. 1 shown compressed between two parts, according to one or more examples of the present disclosure;
FIG. 4 is an elevation view of the resilient compression spring of FIG. 1 shown compressed between two parts, according to one or more examples of the present disclosure;
FIG. 5 is an elevation view of a resilient compression spring between two pieces according to one or more examples of the present disclosure;
FIG. 6 is an elevation view of the resilient compression spring of FIG. 5 shown compressed between two parts, according to one or more examples of the present disclosure;
FIG. 7 is an elevation view of the resilient compression spring of FIG. 5 shown compressed between two parts, according to one or more examples of the present disclosure;
fig. 8 is a perspective view of a resilient compression spring according to one or more examples of the present disclosure;
FIG. 9 is a front view of the resilient compression spring of FIG. 8 between two pieces according to one or more examples of the present disclosure;
FIG. 10 is a graph illustrating load-displacement performance of the resilient compression spring of FIG. 1 according to one or more examples of the present disclosure;
FIG. 11 is a graph illustrating load-displacement performance of the resilient compression spring of FIG. 5 according to one or more examples of the present disclosure;
FIG. 12 is a graph illustrating load-displacement performance of the resilient compression spring of FIG. 8 according to one or more examples of the present disclosure; and
fig. 13 is a schematic flow diagram of a tuning method of a resilient compression spring according to one or more examples of the present disclosure.
Detailed Description
Reference throughout this specification to "one example," "an example," or similar language means that a particular feature, structure, or characteristic described in connection with the example is included in at least one example of the present disclosure. The appearances of the phrases "in one example," "in an example," and similar language throughout this specification may, but do not necessarily, all refer to the same example. Similarly, use of the term "embodiment" means an embodiment having a particular feature, structure, or characteristic described in connection with one or more examples of the disclosure, however, the embodiment may be associated with one or more examples if there is no explicit correlation to indicate otherwise.
Referring to fig. 1 and 2, a
The
The
The
Although the
The
The thickness (T) of the
Generally, as the
In some applications, it may be desirable for the resilient compression spring to have a discontinuously increasing load-displacement rate. For example, in some instances, it may be desirable to have an elastic compression spring with a reduced load-displacement rate over the desired displacement range of the compression spring. In other words, it may be desirable to have a resilient compression spring whose load and displacement are only partially exponentially related. To facilitate a reduction in load-displacement rate over a desired displacement range, the
The
The
The depth (D) of the
In addition, the
Further, the
In the illustrated example, the
Although the
In some examples, the
The
In one example, the
The operation of the
As shown by the load-
Displacement B corresponds to the displacement of the
The characteristics of the localized load-
Any one of the characteristics of the
The direct correlation between the characteristics of the
In some applications and contexts, it may be desirable for an elastic compression spring to produce a load-displacement curve having localized regions of increased load-displacement where the load-displacement rate increases dramatically and sharply to facilitate an increase in stiffness across the range of displacement of the elastic compression spring. Thus, instead of or in addition to the grooves, the resilient compression spring may comprise ribs which create local load-displacement increasing areas. For example, referring to fig. 8 and 9, to facilitate a sharp increase or bulge in load-displacement rate over a desired displacement range, the
The
The
In addition, the
Further, the
In the illustrated example, the
Although the
The operation of the
Displacement B corresponds to the displacement of the
The nature of the localized load-
Any one of the characteristics of the
Referring to fig. 13, according to one example, a
In some embodiments, the local change in load-displacement rate is a local decrease in load-displacement rate (e.g., a protrusion decrease). Further, the updating of the resilient compression spring in
In other embodiments, the local change in load-displacement rate is a local increase in load-displacement rate (e.g., a protrusion increase). Further, the updating of the resilient compression spring in
In the above description, terms such as "upward", "downward", "upper", "lower", "horizontal", "vertical", "left", "right", "above", "below", and the like may be used. Where applicable, these terms are used to provide some clear description when dealing with relative relationships. However, these terms are not intended to imply absolute relationships, orientations, and/or orientations. For example, in the case of an object, an "upper" surface may become a "lower" surface simply by flipping the object over. However, this object is still the same object. Furthermore, the terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise. The recitation of items does not imply that any or all of the items are mutually exclusive and/or mutually exclusive, unless expressly stated otherwise. The terms "a", "an" and "the" also mean "one or more", unless expressly specified otherwise. Further, the term "plurality" may be defined as "at least two". Furthermore, a plurality of a particular feature, as defined herein, does not necessarily mean the entire set of the particular feature or each particular feature of a class of the particular feature, unless otherwise specified.
In addition, in the examples of this specification, "coupling" one element to another element may include direct coupling and indirect coupling. Direct coupling may be defined as one element coupled to and in contact with another element. An indirect coupling may be defined as a coupling between two elements that is not in direct contact with each other, but rather has one or more additional elements between the coupled elements. Further, as used herein, securing one element to another element may include direct securing and indirect securing. Further, as used herein, "adjacent" does not necessarily mean contacting. For example, one element may be adjacent to another element without contacting the element.
As used herein, the phrase "at least one of …, when used with a list of items, means that different combinations of one or more of the listed items can be used and only one item in the list may be required. The item may be a particular object, thing, or category. In other words, "at least one of …" means that any combination of items or number of items from the list can be used, but that not all of the items in the list may be required. For example, "at least one of item a, item B, and item C" may represent item a; item A and item B; item B; item A, item B, and item C; or item B and item C. In some cases, "at least one of item a, item B, and item C" may refer to, for example, but not limited to, two item a, one item B, and ten item C; four items B and seven items C; or some other suitable combination.
Unless otherwise specified, the terms "first," "second," and the like are used herein merely as labels, and are not intended to impose an order, orientation, or hierarchical requirement on the items to which the terms refer. Furthermore, reference to, for example, "a second" item does not require or exclude the presence of, for example, "a first" item or a lower numbered item, and/or, for example, "a third" item or a higher numbered item.
As used herein, a system, device, structure, article, element, component, or hardware that is "configured to" perform a specified function is actually capable of performing the specified function without any change, and does not merely have the potential to perform the specified function after further modification. In other words, a system, device, structure, article, element, component, or hardware that is "configured to" perform a specified function is specifically selected, created, implemented, used, programmed, and/or designed for the purpose of performing the specified function. As used herein, "configured" refers to an existing characteristic of a system, apparatus, structure, article, element, component, or hardware that enables the system, apparatus, structure, article, element, component, or hardware to perform a specified function without further modification. For purposes of this disclosure, a system, device, structure, article, element, component, or hardware described as "configured to" perform a particular function may additionally or alternatively be described as "adapted to" and/or "operable to" perform that function.
The schematic flow chart diagrams included herein are generally set forth as logical flow chart diagrams. As such, the depicted order and labeled steps are indicative of one embodiment of the presented method. Other steps and methods may be conceived that are equivalent in function, logic, or effect to one or more steps, or portions thereof, of the illustrated method. Additionally, the format and symbols employed are provided to explain the logical steps of the method and are understood not to limit the scope of the method. Although various arrow types and line types may be employed in the flow chart diagrams, they are understood not to limit the scope of the corresponding method. Indeed, some arrows or other connectors may be used to indicate only the logical flow of the method. For instance, an arrow may indicate a waiting or monitoring period of unspecified duration between enumerated steps of the depicted method. Additionally, the order in which a particular method occurs may (or may not) strictly adhere to the order of the corresponding steps shown.
Further, the present disclosure includes embodiments according to the following clauses:
clause 1. an elastic compression spring (110) for isolating vibrations between a first part (102) and a second part (104), wherein the first part (102) is movable in a direction (106) relative to the second part (104), the elastic compression spring (110) comprising:
a conduit (112) elongated along a central axis (122) of the conduit (112), wherein:
the central axis of the pipe (112) is perpendicular to the direction (106);
the conduit (112) is configured to compress in the direction (106);
the pipe (112) comprises an outer surface (117), the outer surface (117) comprising an initial contact line (136) configured to initially receive contact with the first part (102);
the conduit (112) further comprises at least one groove (120), the at least one groove (120) being formed in the outer surface (117) parallel to the central axis (122) and circumferentially spaced from the initial contact line (136); and
the at least one groove (120) causes a local reduction of the thickness (T) of the pipe (112) and the stiffness of the resilient compression spring (110) at the at least one groove (120).
Clause 2. the resilient compression spring (110) of clause 1, wherein the tube (112) further comprises two grooves (120) formed in the outer surface (177) of the tube (112) on opposite sides of the initial contact line (136).
Clause 3. the resilient compression spring (110) of clause 2, wherein the two grooves (120) are circumferentially spaced the same distance from the initial contact line (136).
Clause 4. the resilient compression spring (110) of clause 2, wherein:
the tube (112) further comprises four grooves (120) formed in the outer surface (117) of the tube (112); and
two of the four grooves (120) are located on the opposite side of the initial contact line (136) from the other two of the four grooves (120).
Clause 5. the resilient compression spring (110) of clause 1, wherein:
the outer surface (117) of the pipe (112) has a curved convex shape; and
the at least one groove (120) has a curved concave shape.
Clause 6. the resilient compression spring (110) of clause 1, wherein the tube (112) is made of a thermoplastic elastomer.
Clause 7. the resilient compression spring (110) of clause 1, wherein the thickness (T) of the tube (112) decreases and increases along the at least one groove (120) when moving along the tube (112) in a circumferential direction towards the initial contact line (136).
Clause 8. the resilient compression spring (110) of clause 1, wherein:
the depth (D) of said at least one groove (120) corresponds to a decreasing amplitude of the load-displacement rate of said elastic compression spring (110);
the length (L) of the at least one groove (120) corresponds to a displacement range of the pipe (112) during which the load-displacement rate decreases; and
the circumferential distance (d) of said at least one groove (120) from said initial contact line (136) corresponds to a displacement of said pipe (112) at which said load-displacement rate of said elastic compression spring (110) starts to decrease.
Clause 9. an elastic compression spring (110) for isolating vibrations between a first part (102) and a second part (104), wherein the first part (102) is movable in a direction (106) relative to the second part (104), the elastic compression spring (110) comprising:
a conduit (112) elongated along a central axis (122) of the conduit (112), wherein:
the central axis (122) of the pipe (112) being perpendicular to the direction (106);
the conduit (112) is configured to compress in the direction (106);
the pipe (112) comprises an outer surface (117), the outer surface (117) comprising an initial contact line (136) configured to initially receive contact with the first part (102);
the conduit (112) further comprising at least one rib (150), the at least one rib (150) being formed in the outer surface (117), parallel to the central axis (122), and circumferentially spaced from the initial contact line (136); and
the at least one rib (150) causes a local increase in the thickness (T) of the tube (112) and the stiffness of the resilient compression spring (110) at the at least one rib (150).
Clause 10. the resilient compression spring (110) of clause 9, wherein the tube (112) further comprises two ribs (150) formed in the outer surface (177) of the tube (112) and on opposite sides of the initial contact line (136).
Clause 11. the resilient compression spring (110) according to clause 10, wherein the two ribs (150) are circumferentially spaced the same distance from the initial contact line (136).
Clause 12. the resilient compression spring (110) of clause 10, wherein:
the tube (112) further comprises four ribs (150) formed in the outer surface (117) of the tube (112); and
two of the four ribs (150) are located on a side of the initial contact line (136) opposite to the other two of the four ribs (150).
Clause 13. the resilient compression spring (110) of clause 9, wherein:
the outer surface (117) of the pipe (112) has a curved convex shape; and
the at least one rib (150) has a curved convex shape with a radius of curvature that is less than a radius of curvature of the curved convex shape of the outer surface (117) of the pipe (112).
Clause 14. the resilient compression spring (110) of clause 9, wherein the tube (112) is made of a thermoplastic elastomer.
Clause 15. the resilient compression spring (110) of clause 9, wherein the thickness (T) of the tube (112) decreases and increases along the at least one rib (150) when moving along the tube (112) in a circumferential direction toward the initial contact line (136).
Clause 16. the resilient compression spring (110) of clause 9, wherein:
the height (h) of said at least one rib (150) corresponds to the magnitude of the increase in the load-displacement rate of said elastic compression spring (110);
the length (L) of the at least one rib (150) corresponds to a displacement range of the pipe (112) during which the load-displacement rate increases; and
the circumferential distance (d) of said at least one rib (150) from said initial contact line (136) corresponds to a displacement of said pipe (112) at which said load-displacement rate of said elastic compression spring (110) starts to increase.
Clause 17. a method (200) of tuning an elastic compression spring (110), the method (200) comprising:
identifying at least one difference between a desired load-displacement performance and an actual load-displacement performance of the resilient compression spring;
determining a desired local reduction in load-displacement rate that begins at a desired first displacement and ends at a desired second displacement and that corresponds to at least one difference between the desired load-displacement performance and the actual load-displacement performance; and
updating at least one groove formed in an outer surface of a tube of the resilient compression spring in accordance with the desired localized reduction in the load-displacement rate to achieve the desired load-displacement performance.
Clause 18. the method (200) of clause 17, wherein the resilient compression spring (110) is renewed such that:
the depth (D) of the at least one groove (120) corresponds to the magnitude of the desired local reduction in the load-displacement rate;
a circumferential distance (d) of the at least one groove (120) from an initial contact line (136) of the pipe (112) corresponds to the desired first displacement; and
the length (L) of the at least one groove (120) corresponds to the desired second displacement.
Clause 19. a method (200) of tuning an elastic compression spring (110), the method (200) comprising:
identifying at least one difference between a desired load-displacement performance and an actual load-displacement performance of the resilient compression spring;
determining a desired local increase in load-displacement rate that begins at a desired first displacement and ends at a desired second displacement and that corresponds to the at least one difference between the desired load-displacement performance and the actual load-displacement performance; and
in accordance with the desired localized increase in the load-displacement rate, updating at least one rib formed in an outer surface of a tube of the resilient compression spring to achieve the desired load-displacement performance.
Clause 20. the method (200) of clause 19, wherein the resilient compression spring (110) is renewed such that:
the height (h) of the at least one rib (150) corresponds to the magnitude of the desired local increase in the load-displacement rate;
a circumferential distance (d) of the at least one rib (150) from an initial contact line (136) of the pipe (112) corresponds to the desired first displacement; and
a length (L) of the at least one rib (150) corresponds to the desired second displacement.
The present subject matter may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:橡胶减震套