Suspension bump stop assembly

Abstract

The present invention relates to a suspension bump stop assembly (1) comprising a damping component (2) and a rigid component (3), the damping component (2) being overmolded and formed on the rigid component (3); the damping component (2) comprising a damping radial portion (2-1); the rigid component (3) comprising a rigid radial portion (3-1). A damping component (2) annular projection (4) is formed on the damping radial portion (2-1), a rigid component (3) annular groove (5) is formed on the rigid radial portion (3-1), and the damping component projection (4) is coupled with the rigid component groove (5). Figure 1

Description

Title of the invention: Suspension stop assembly Technical field of the invention

[0001] The present invention relates to a suspension bump stop assembly and, in particular, to a suspension bump stop assembly comprising a damping component and a rigid component. State of the prior art

[0002] In the prior art, a suspension bump stop assembly is made by combining a damping component and a rigid component by an injection molding process, a contact bonding surface of the damping component and the rigid component being a flat surface. However, due to a force exerted by a suspension spring on the damping component, the damping component will be deformed, causing the damping component to generate a radial offset relative to the rigid component, this increasing the risk that the damping component and the rigid component may be partially separated. Summary of the invention

[0003] In order to overcome one or more deficiencies of the prior art, a bump stop assembly is provided in one aspect of the present invention, the bump stop assembly includes a damping component and a rigid component, and the damping component is overmolded and formed over the rigid component.

[0004] The damping component comprises a radial damping portion.

[0005] The rigid component comprises a rigid radial portion.

[0006] An annular damping component projection is formed on the damping radial portion.

[0007] A rigid component annular groove is formed on the rigid radial portion.

[0008] The damping component projection is coupled with the component groove rigid.

[0009] This coupling relationship increases a contact bonding area between the damping component and the rigid component. When a suspension spring of the bump stop assembly acts on the rigid component through the damping component, the rigid component groove allows for greater expansion of the damping component to be retained, which may reduce the risk of the damping component separating from the rigid component.

[0010] According to the above aspect of the present invention, a plurality of groove protrusions and / or a plurality of groove blind holes are formed on a bottom of the rigid component groove.

[0011] A plurality of damping component protrusions and / or a plurality of damping component blind holes are formed on a top of the damping component protrusion.

[0012] The plurality of damping component protrusions are coupled with the corresponding plurality of groove blind holes, and / or the plurality of damping component blind holes are coupled with the corresponding plurality of groove protrusions.

[0013] According to the above various aspects of the present invention, a plurality of groove protrusions and a plurality of groove blind holes are formed on the bottom of the rigid component groove, and a plurality of damping component protrusions and a plurality of damping component blind holes are formed on the top of the damping component protrusions.

[0014] The plurality of groove protrusions and the plurality of groove blind holes are spaced apart from each other and alternately arranged along a circumference of the rigid component groove.

[0015] The plurality of damping component protrusions and the plurality of damping component blind holes are spaced apart from each other and alternately arranged along a circumference of the damping component protrusion.

[0016] According to the above various aspects of the present invention, the damping component comprises an axial damping portion.

[0017] The rigid component comprises a rigid axial portion.

[0018] One of the damping axial portion and the rigid axial portion is provided with a plurality of spaced apart stepped protrusions, and the other is provided with a plurality of spaced apart stepped through holes.

[0019] The plurality of stepped protrusions are coupled with the corresponding plurality of stepped through holes.

[0020] Coupling the stepped protrusions of the plurality of damping components with the corresponding stepped through holes of the plurality of rigid components can prevent the damping component from shifting relative to the rigid component in the axial direction and the radial direction.

[0021] In another aspect of the present invention, at least one convex annular groove rib and / or at least one concave annular groove rib are formed on the bottom of the rigid component groove.

[0022] At least one damping component convex annular rib and / or at least one damping component concave annular rib are formed on the top of the damping component projection.

[0023] The damping component convex rib is coupled with the corresponding groove concave rib, and / or the damping component concave rib is coupled with the corresponding groove convex rib.

[0024] In another aspect of the present invention, at least one groove convex annular rib and at least one groove concave annular rib are formed on the bottom of the rigid component groove, and at least one damping component convex annular rib and at least one damping component concave annular rib are formed on the top of the damping component projection.

[0025] The groove convex rib and the groove concave rib are spaced apart from each other and alternately arranged along the circumference of the rigid component groove.

[0026] The damping component convex rib and the damping component concave rib are spaced apart from each other and alternately arranged along the circumference of the damping component projection.

[0027] According to the above further aspect of the present invention, the damping component comprises an axial damping portion.

[0028] The rigid component comprises a rigid axial portion.

[0029] One of the damping axial portion and the rigid axial portion is provided with a plurality of spaced apart protrusions, and the other is provided with a plurality of spaced apart recesses.

[0030] The plurality of protrusions are coupled with the corresponding plurality of recesses.

[0031] Coupling the protrusions of the plurality of damping components with corresponding recesses of the plurality of rigid components may prevent offsetting of the damping component relative to the rigid component in the axial direction and rotation of the damping component relative to the rigid component.

[0032] According to the above further aspect of the present invention, the rigid component is made of a rigid plastic material.

[0033] The damping component is made of an elastic material.

[0034] According to the above further aspect of the present invention, the rigid component is made of a fiberglass reinforced thermoplastic resin material.

[0035] The damping component is made of a thermoplastic elastomer polyurethane rubber.

[0036] According to the above various aspects of the present invention, an annular groove rim is formed on the radially outermost portion of the rigid component groove.

[0037] When a suspension spring of the suspension bump stop assembly acts on the damping component, the groove flange can prevent radial elastic deformation of the damping component projection.

[0038] The structure according to the present invention avoids axial and radial offsetting of the damping component relative to the rigid component caused by the force exerted on the damping component by the suspension spring, this further avoiding the risk of the damping component and the rigid component being partially separated.

[0039] Up to this point, for the sake of a better understanding of the detailed description of the present invention, and so that the contribution of the present invention to the prior art is better recognized, the contents of the present invention have been summarized in relatively detail. Of course, implementations of the present invention will be described below and will constitute the subject of the appended claims.

[0040] Likewise, those skilled in the art will realize that the concept upon which the present invention is based can readily serve as a basis for the design of other structures, methods and systems for the embodiment of several objects of the present invention. Therefore, it is important to consider the appended claims as including such equivalent structures, so long as they do not go beyond the spirit and scope of the present invention. Brief description of the figures

[0041] Those skilled in the art will gain a better understanding of the present invention from the following drawings, and can more clearly depict the advantages of the present invention. The drawings described herein serve to illustrate only selected embodiments, rather than all possible implementations, and are not intended to limit the scope of the present invention.

[0042] [Fig.l] represents an overall diagram of a suspension stop assembly according to a first implementation of the present invention;

[0043] [Fig.2] represents a spatial diagram of a rigid component according to the first implementation of the present invention;

[0044] [Fig.3] represents a spatial diagram of a damping component according to the first implementation of the present invention;

[0045] [Fig.4] represents an overall cross-sectional diagram of the rigid component and the damping component according to the first implementation of the present invention;

[0046] [Fig.5] represents an overall diagram of a suspension stop assembly according to a second implementation of the present invention;

[0047] [Fig.6] represents a spatial diagram of a rigid component according to the second implementation work of the present invention;

[0048] [Fig.7] represents a spatial diagram of a damping component according to the second implementation of the present invention; and

[0049] [Fig.8] represents an overall sectional diagram of the rigid component and of the damping component according to the second implementation of the present invention. Detailed description of the invention

[0050] Hereinafter, specific implementations according to the present invention will be described in detail with reference to the various drawings.

[0051] As illustrated in [Fig.l], a suspension bump stop assembly 1 according to a first implementation of the present invention comprises a damping component 2 and a rigid component 3, the damping component 2 being overmolded and formed on the rigid component 3, for example, by an injection and molding process.

[0052] As illustrated in [Fig.l], the rigid component 3 has a rigid component principal axis A. The damping component 2 has a damping component principal axis B.

[0053] The main axis A of the rigid component and the main axis B of the damping component are placed obliquely to each other (as illustrated in [Fig.l]) or are superimposed (not illustrated).

[0054] As illustrated in [Fig.3], the damping component 2 comprises a radial damping portion 2-1.

[0055] As illustrated in [Fig.2], the rigid component 3 comprises a rigid radial portion 3-1.

[0056] An annular damping component projection 4 is formed on the damping radial portion 2-1. A suspension spring not shown acts on the damping radial portion 2-1.

[0057] An annular groove 5 of rigid component is formed on the rigid radial part 3-1.

[0058] The damping component projection 4 is coupled with the rigid component groove 5.

[0059] This coupling relationship increases a contact bonding area between the damping component 2 and the rigid component 3. When the suspension spring exerts a force F through the damping component 2 (see [Fig.4] where the arrow represents the direction of a resultant force exerted by the spring suspension) on the rigid component 3, the rigid component groove 5 allows for greater expansion of the damping component 2 to be retained, which may reduce the risk of the damping component 2 separating from the rigid component 3.

[0060] According to the above implementation of the present invention, a plurality of groove protrusions 5-1 and a plurality of groove blind holes 5-2 are formed on a bottom of the rigid component groove 5.

[0061] The plurality of groove protrusions 5-1 and the plurality of groove blind holes 5-2 are spaced apart from each other and alternately arranged along a circumference of the rigid component groove 5.

[0062] According to the above various implementations of the present invention, a plurality of damping component protrusions 4-1 and a plurality of damping component blind holes 4-2 are formed on a top of the damping component protrusion 4.

[0063] The plurality of damping component protrusions 4-1 and the plurality of damping component blind holes 4-3 are spaced apart from each other and alternately arranged along a circumference of the damping component protrusion 4.

[0064] According to the above various implementations of the present invention, the damping component 2 and the rigid component 3 are both solid structures. For the sake of clarity, [Fig. 4] illustrates the coupling relationship using a transparent diagram, where the plurality of damping component portion protrusions 4-1 are coupled with the corresponding plurality of groove blind holes 5-2.

[0065] The plurality of damping component blind holes 4-2 are mated with the corresponding plurality of groove protrusions 5-1.

[0066] This coupling relationship further increases the contact bonding area between the damping component 2 and the rigid component 3, thereby preventing rotation of the damping component 2 relative to the rigid component 3.

[0067] As illustrated in [Fig. 4], a first annular groove flange 5-5 is formed on the radially outermost portion of the rigid component groove 5. The distance between the bottom of the rigid component groove 5 and the first groove flange 5-5 is set such that when the suspension spring exerts the force F (see [Fig. 4]) on the damping portion 2, the first groove flange 5-5 can prevent radial elastic deformation of the damping component projection 4, thereby further reducing the risk of the damping component 2 separating from the rigid component 3.

[0068] According to the above various implementations of the present invention, the damping component 2 comprises an axial damping portion 2-2.

[0069] The rigid component 3 comprises a rigid axial part 3-2.

[0070] A plurality of stepped protrusions 6 spaced apart from each other are formed on the damping axial portion 2-2.

[0071] A plurality of stepped through holes 7 spaced apart from each other are formed on the rigid axial portion 3-2.

[0072] The plurality of stepped protrusions 6 are coupled with the corresponding plurality of stepped through holes 7.

[0073] The coupling of the stepped protrusions 6 with the corresponding stepped through holes 7 can prevent the damping component 2 from shifting relative to the rigid component 3 in the axial direction and the radial direction.

[0074] The foregoing provides an illustration and description, but is not intended to be exhaustive or to limit implementations to the precise form disclosed. Modifications and variations are possible in consideration of what is disclosed above or may be acquired from implementations in use. For example, one of the bottom of the rigid component groove and the top of the damping component projection is provided with only a plurality of protrusions, and the other is provided with only a plurality of blind holes, and the protrusions are mated with the corresponding blind holes. As another example, a plurality of stepped through holes spaced apart from each other are formed on the damping axial portion 2-2, a plurality of stepped protrusions spaced apart from each other are formed on the rigid axial portion 3-2, and the like.

[0075] According to a second implementation of the present invention, as illustrated in [Fig. 5], a suspension bump stop assembly 10 comprises a damping component 12 and a rigid component 13, the damping component 12 being overmolded and formed on the rigid component 13, for example, by the injection and molding process.

[0076] As illustrated in [Fig.5], the rigid component 13 has a rigid component main axis A1. As illustrated in [Fig.6] and [Fig.7], the damping component 12 has a damping component main axis B1.

[0077] The main axis A1 of the rigid component and the main axis B1 of the damping component are placed obliquely to each other or are superimposed (not shown).

[0078] As illustrated in [Fig.7], the damping component 12 comprises a radial damping portion 12-1.

[0079] As illustrated in [Fig.8], the rigid component 13 comprises a rigid radial portion 13-1.

[0080] An annular damping component projection 14 is formed on the damping radial portion 12-1. A suspension spring 11 not shown acts on the damping radial portion 12-1.

[0081] As illustrated in [Fig.6], a rigid component annular groove 15 is formed on the rigid radial portion 13-1.

[0082] The damping component projection 14 is coupled with the rigid component groove 15.

[0083] This coupling relationship increases the contact bonding between the damping component 12 and the rigid component 13. When the suspension spring exerts a force F1 through the damping component 12 (see [Fig.8] where the arrow represents the direction of a resultant force exerted by the suspension spring) on ​​the rigid component 13, this can reduce the risk of the damping component 12 separating from the rigid component 13.

[0084] As illustrated in [Fig.6], at least one convex annular groove rib 15-3 and at least one concave annular groove rib 15-4 are formed on the bottom of the rigid component groove 15.

[0085] The convex groove rib 15-3 and the concave groove rib 15-4 are spaced apart from each other and arranged alternately along the circumference of the rigid component groove 15.

[0086] According to the above further implementation of the present invention, as illustrated in [Fig.7], at least one damping component convex annular rib 14-3 and at least one damping component concave annular rib 14-4 are formed on the top of the damping component projection 14.

[0087] The damping component convex rib 14-3 and the damping component concave rib 14-4 are spaced apart from each other and alternately arranged along the circumference of the damping component projection 14.

[0088] According to the above further implementation of the present invention, the damping component 12 and the rigid component 13 are both solid structures. For the sake of clarity, [Fig.8] illustrates a coupling relationship using a transparent diagram, where the damping component convex rib 14-3 is coupled with the corresponding groove concave rib 15-4.

[0089] The damping component concave rib 14-4 is coupled with the corresponding groove concave rib 15-3.

[0090] This coupling relationship further increases the contact bonding area between the damping component 12 and the rigid component 13, thereby preventing radial offsetting of the damping component 12 relative to the rigid component 13.

[0091] A second annular groove rim 15-6 is formed on the radially outermost portion of the rigid component groove 15. The distance between the bottom of the rigid component groove 15 and the second groove flange 15-6 is defined such that when the suspension spring exerts the force F (see [Fig.8]) on the damping portion 12, the second groove flange 15-6 can prevent radial elastic deformation of the damping component projection, thereby further reducing the risk of the damping component 12 separating from the rigid component 13.

[0092] According to the above further implementation of the present invention, the damping component 12 comprises an axial damping portion 12-2.

[0093] The rigid component 13 comprises a rigid axial portion 13-2.

[0094] As illustrated in [Fig.7], a plurality of protrusions 8 spaced apart from each other are formed on the axial damping portion 12-2.

[0095] As illustrated in [Fig.6], a plurality of recesses 9 spaced apart from each other are formed on the rigid axial portion 13-2.

[0096] As illustrated in [Fig.8], the plurality of protrusions 8 are coupled with the corresponding plurality of recesses 9.

[0097] The coupling of the plurality of protrusions 8 with the corresponding plurality of recesses 9 can prevent the damping component 12 from shifting relative to the rigid component 13 in the axial direction and the rotation of the damping component 12 relative to the rigid component 13.

[0098] According to the above further implementation of the present invention, the rigid component 13 is made of a rigid plastic material.

[0099] The damping component 12 is made of an elastic material.

[0100] According to the above further implementation of the present invention, the rigid component 13 is made of a fiberglass reinforced thermoplastic resin material.

[0101] The damping component 12 is made of a thermoplastic elastomer polyurethane rubber.

[0102] The foregoing provides an illustration and description, but is not intended to be exhaustive or to limit implementations to the precise form disclosed. Modifications and variations are possible in consideration of what is disclosed above or may be acquired from implementations in use. For example, one of the bottom of the rigid component groove and the top of the damping component protrusion is provided with only a convex annular rib, and the other is provided with only the concave annular rib, and the concave rib is mated with the convex rib. As another example, a plurality of recesses spaced apart from each other are formed on the damping axial portion, and a plurality of protrusions spaced apart from each other are formed on the rigid axial portion.

[0103] Although particular combinations of features are recited in the claims and / or disclosed in the description, these combinations are not intended to limit the disclosure of various implementations. Many of these features may in fact be combined in ways not specifically set forth in the claims and / or disclosed in the description. Although each dependent claim set forth below may depend directly on only one claim, the disclosure of various implementations includes each dependent claim in combination with each other claim in the set of claims.

[0104] No element or action or instruction employed herein shall be construed as primary or essential unless expressly so described. Further, as used herein, the articles "a" and "an" are intended to include one or more elements, and may be used interchangeably with "one or more." Further, as used herein, the articles "the" and "the" are intended to include one or more elements designated in conjunction with the pronoun "which" or "that," and may be used interchangeably with "one or more." Further, as used herein, the term "set" is intended to include one or more elements (e.g., associated elements, unassociated elements, a combination of associated and unassociated elements, and the like), and may be used interchangeably with "one or more."Where only one element is intended, the phrase "a single element" or similar language is used. Furthermore, as used herein, the term "having" and its variations and similar terms are intended to be unrestricted terms. In addition, the phrase "on the basis of" is intended to mean "at least in part on the basis of" unless otherwise explicitly stated. Furthermore, as used herein, the term "or," when used with two elements, is intended to be inclusive, and may be used interchangeably with "and / or," unless otherwise expressly stated (e.g., if used in conjunction with "or" or "only one of them").

Claims

Claims

1. A suspension stop assembly (1) comprising a damping component (2) and a rigid component (3), the damping component (2) being overmolded and formed on the rigid component (3); the damping component (2) comprising a damping radial portion (2-1); the rigid component (3) comprising a rigid radial portion (3-1); a damping component (2) annular projection (4) being formed on the damping radial portion (2-1), and a rigid component (3) annular groove (5) being formed on the rigid radial portion (3-1), and the damping component projection (4) being coupled with the rigid component groove (5); characterized in that: - a plurality of groove (5) protrusions (5-1) and / or a plurality of groove (5) blind holes (5-2) are formed on a bottom of the rigid component (3) groove (5);- a plurality of damping component (2) protrusions (4-1) and / or a plurality of damping component (2) blind holes (4-2) are formed on a top of the damping component (2) protrusion (4); and - the plurality of damping component (2) protrusions (4-1) are coupled with the corresponding plurality of groove (5) blind holes (5-2), and / or the plurality of damping component (2) blind holes (4-2) are coupled with the corresponding plurality of groove (5) protrusions (5-1).;

2. The suspension bump stop assembly according to claim 1, wherein: - a plurality of groove (5) protrusions (5-1) and a plurality of groove (5) blind holes (5-2) are formed on the bottom of the rigid component (3) groove (5), and a plurality of damping component (2) protrusions (4-1) and a plurality of damping component (2) blind holes (4-2) are formed on the top of the damping component (2) protrusion (4); - the plurality of groove (5) protrusions (5-1) and the plurality of groove (5) blind holes (5-2) are spaced apart from each other and alternately arranged along a circumference of the rigid component (3) groove (5); and - the plurality of damping component (2) protrusions (4-1) and the plurality of damping component (2) blind holes (4-2) are spaced apart from each other and alternately arranged along a circumference of the damping component (2) protrusion (4).

3. A suspension stop assembly according to any one of claims 1 and 2, wherein: - the damping component (2) comprises a damping axial portion (2-2); - the rigid component (3) comprises a rigid axial portion (3-2); - one of the damping axial portion (2-2) and the rigid axial portion (3-2) is provided with a plurality of stepped protrusions (6) spaced apart from each other, and the other is provided with a plurality of stepped through holes (7) spaced apart from each other; and - the plurality of stepped protrusions (6) are coupled with the corresponding plurality of stepped through holes (7).

4. Suspension stop assembly according to claim 1, wherein: - at least one convex annular rib (15-3) of groove (5) and / or at least one concave annular rib (15-4) of groove (5) are formed on the bottom of the groove (5) of rigid component (3); - at least one convex annular rib (14-3) of damping component (2) and / or at least one concave annular rib (14-4) of damping component (2) are formed on the top of the projection (4) of damping component (2); and - the convex rib (14-3) of damping component (2) is coupled with the concave rib (15-4) of corresponding groove (5), and / or the concave rib (14-4) of damping component (2) is coupled with the convex rib (15-3) of corresponding groove (5).

5. A suspension stop assembly according to claim 4, wherein: - at least one convex annular rib (15-3) of groove (5) and at least one concave annular rib (15-4) of groove (5) are formed on the bottom of the groove (5) of rigid component (3), and at least one convex annular rib (14-3) of damping component (2) and at least one concave annular rib (14-4) of damping component (2) are formed on the top of the projection (4) of damping component (2); - the convex rib (15-3) of groove (5) and the concave rib (15-4) of groove (5) are spaced apart from each other and alternately arranged along the circumference of the groove (5) of rigid component (3); and - the convex rib (14-3) of damping component (2) and the concave rib (14-4) of damping component (2) are spaced apart from each other and alternately arranged along the circumference of the projection (4) of damping component (2).

6. A suspension bump stop assembly according to claim 4 or 5, wherein: - the damping component (2) comprises a damping axial portion (2-2); - the rigid component (3) comprises a rigid axial portion (3-2); - one of the damping axial portion and the rigid axial portion is provided with a plurality of spaced apart protrusions, and the other is provided with a plurality of spaced apart recesses; and - the plurality of protrusions are coupled with the corresponding plurality of recesses.

7. A suspension stop assembly according to claim 1, wherein: - the rigid component (3) is made of a rigid plastic material; and - the damping component (2) is made of an elastic material.

8. A suspension bump stop assembly according to claim 7, wherein: - the rigid component (3) is made of a fiberglass reinforced thermoplastic resin material; and - the damping component (2) is made of a thermoplastic elastomer polyurethane rubber.

9. A suspension bump stop assembly according to claim 1, wherein: - an annular flange (5-5, 15-6) of groove (5) is formed on the radially outermost portion of the groove (5) of rigid component (3); and - when a suspension spring of the suspension bump stop assembly (1) acts on the damping component (2), the flange groove (5-5, 15-6) can prevent radial elastic deformation of the projection (4) of damping component (2).

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