CN220227620U

CN220227620U - Resonator with supporting adjusting pin type mass block

Info

Publication number: CN220227620U
Application number: CN202320772466.8U
Authority: CN
Inventors: 彭岩; 邢益福; 李俊; 王征
Original assignee: Weigu Technology Anhui Co ltd
Current assignee: Weigu Technology Anhui Co ltd
Priority date: 2022-04-19
Filing date: 2023-04-10
Publication date: 2023-12-22
Anticipated expiration: 2033-04-10
Also published as: CN116696970A; DE102022109479A1

Abstract

The utility model discloses a resonator with a supporting adjusting pin type mass block, which comprises the following components: the resonator mass comprises two holding devices, an elongated resonator mass between two cylindrical section-shaped axial end regions along a main axis, and two elastic elements, which are each designed to support one of the two axial end regions of the resonator mass on one of the two holding devices, which are matched without play against a connecting region of one of the two elastic elements. The resonator mass has support adjustment pins in its two axial end regions. The spring elements each have a receptacle for receiving one of the two axial end regions of the resonator mass in a force-fitting manner and a tubular spring region between the receptacle and the connection region. The inner circumferential surface of the elastic element extends steplessly between the receiving portion and the engaged tubular elastic region, respectively.

Description

Resonator with supporting adjusting pin type mass block

Technical Field

The utility model relates to a resonator having two holding devices, an elongated resonator mass along a main axis between two cylindrical section-shaped axial end regions, and two elastic elements made of an elastomer material, each of which is designed to support one of the two holding devices at the two axial end regions of the resonator mass. The utility model relates in particular to a resonator having the above-mentioned features.

Background

Resonators may be used, for example, in motor vehicles. The specific application area is a corresponding trunk lid of a motor vehicle in order to reduce disturbing vibrations of the trunk lid. In this application, the resonator allows only a small installation space to be required and must be durable under the impulse load impact produced when the trunk lid is closed.

A resonator with a resonator mass which is supported on a resonator base by a plurality of basin-shaped spring elements is known from german patent application publication EP 1 303,710 B1. The elastic element has grooves around its outer circumference at its two axial ends, with which grooves the surrounding projections in the resonator mass and the receiving opening in the resonator base cooperate. The adjustment core may be placed in the hollow cavity of the basin-shaped spring element, said adjustment core having a suitable stiffness for adjusting the stiffness in the coupling of the resonator mass to the resonator base via the spring element. The tuning cores fill the entire hollow cavity of the respective spring element and here extend from the resonator mass to the resonator base.

A resonator is known from german patent application DE102017106019B4, which discloses a resonator having a resonator mass and two elastic elements arranged on two ends of the resonator mass opposite each other for elastically coupling the resonator mass to a structure in which each of the two elastic elements has a tubular region of an elastomer material, which tubular region extends from the resonator mass to a fastening profile on its outer circumferential surface, which fastening profile is configured for fastening in a recess of a fastening base of the structure. A pin-like deflection limiter is arranged in each of the two tubular regions, which limits deflection of the resonator mass relative to the structure. Two tubular regions of elastomeric material are cooperatively connected with the resonator mass. The two pin-shaped deflection limiters are part of a rigid molded body that forms the resonator mass and terminate at an axial distance before the contour is fixed. The outer circumferential surface of the pin-shaped deflection limiter has a free distance in all radial directions from the inner circumferential surface of the tubular region in the undeflected state of the resonator mass. In order to produce the known resonator, the entire resonator mass must be inserted separately into a mold for producing the elastic element and heated in the mold.

A resonator for a motor vehicle, in particular a luggage compartment cover of a motor vehicle, is known from german patent application DE102019112108A1, and has two holding devices, an elongated resonator mass along a main axis between two cylindrical section-shaped axial end regions, and two elastic elements made of an elastomer material, which are each designed to support one of the two holding devices at the two axial end regions of the resonator mass. The resonator body is elastically coupled to the carrier means by means of elastomer means. The elastomeric means has a plurality of elastomers. Arranged on the end sections of the resonator body are respectively arranged elastic bodies, which have cap-shaped sections open toward the resonator body, with which the respective elastic bodies overlap the resonator body. The carrier device has receptacles, which are each assigned to one of the elastic bodies. Each of the elastic bodies has a holding section for fixing the respective elastic body by means of the associated holding element in the region of the associated receptacle of the carrier device. The respective retaining element is configured for at least partially overlapping the cap-shaped section of the respective elastomer to limit the displacement of the elastomer from the original position. Next to the corresponding cap-shaped section open towards the resonator body, the elastomer has a central hole which extends until the edge of its end opposite the resonator body is closed. The functional section of the elastomer is thus practically annular, said elastomer being described as cylindrical. In the use of the known resonator, it has been shown that the support of the resonator body in the cap-shaped section of the elastomer facing the resonator body is softer than the functional section of the elastomer and thus the known natural frequency of the resonator, which should be determined by the functional section of the elastomer, is significantly offset. This makes it difficult to set the natural frequency of the resonator to a defined reduced frequency of the corresponding trunk lid. Furthermore, a relative movement between the end section of the resonator body and the cap-shaped section of the elastomer is caused, which negatively influences the service life of the known resonator.

Disclosure of Invention

The object of the utility model is to create a resonator which can be produced easily, whose natural frequency can be set easily and which also has a long service life.

The utility model relates to a resonator with a supporting adjusting pin type mass, which has two holding devices, an elongated resonator mass along a main axis between two cylindrical section-shaped axial end regions, and two elastic elements made of an elastomer material, which are each designed to support the two axial end regions of the resonator mass on one of the two holding devices. The holding device is matched against the connecting region of one of the elastic elements in a play-free manner in the radial and axial directions relative to the main axis. The resonator mass is formed with a support adjustment pin in its two cylindrical section-shaped axial end regions, which has a connecting diameter which is reduced by at least 70% relative to the maximum diameter of the resonator mass. The elastic elements each have a receiving portion for receiving one of the two support adjustment pins in a force-fitting manner and a tubular elastic region between the receiving portion and the connecting region. The inner circumferential surface of the elastic element extends here steplessly between the receiving portion and the engaged tubular elastic region. That is, the receiving portion of the elastic element is not spaced apart from the interior of the tubular elastic region. In this way, the effective elastic stiffness of the elastic region and thus the natural frequency of the resonator according to the utility model can be influenced in a simple manner by changing the length of the support adjustment pin of the resonator mass. The spring element is usually a spring element which is produced separately from the resonator mass, is inserted onto a support adjustment pin of the resonator mass and rests against an adjacent end face of the resonator mass. The resonator mass is typically supported on the spring element in a radial direction with respect to the main axis by means of a support adjustment pin only. A certain force fit can be created between the elastic element and the end face of the resonator mass adjacent to the support adjustment pin. In contrast, the resonator mass is supported on the spring element substantially at its end face adjacent to the support adjustment pin in the axial direction with respect to the main axis, wherein a force fit between the support adjustment pin and the spring element is produced. Although an adhesive or another material connection between the spring element and the support adjustment pin and the adjacent end face is possible in the resonator according to the utility model, it is generally not necessary and therefore entails unnecessary additional costs and manufacturing steps.

In the resonator according to the utility model, the spring element can each have a closed-edge bore, i.e. a generally tubular design, extending in the axial direction from the receiving portion through the tubular spring region and the connecting region. The inner circumferential surface of the respective elastic element can here extend steplessly over the entire length of the closed-edge aperture. In particular, the circular inner diameter of the inner circumferential surface of the elastic element may continuously decrease away from the resonator mass. The spring element can thus be constructed from a simple and easily releasable, slightly conical core rod of a mold for producing the spring element. The taper angle of the core rod and thus of the inner circumferential surface of the elastic element may lie in the range from 1 ° to 10 °, preferably in the range from 1 ° to 6 °.

In principle, the support adjustment pin can also have a slightly conical shape with a correspondingly small conical angle. However, the support adjustment pin can also be configured cylindrically with a slightly reduced inner diameter of the spring element, wherein it is to be understood that the front edge of the support adjustment pin should be chamfered or rounded in order to prevent damage to the spring element when the support adjustment pin is inserted. The connection diameter of the support adjustment pin is preferably reduced by at least 75%, i.e. by a quarter, more preferably by at least 80%, i.e. by a fifth or even by at least 83%, i.e. by about a sixth, relative to the maximum diameter of the resonator mass. In absolute terms, the connection diameter of the support adjustment pin may be in the range of 3mm to 20mm or more precisely 5mm to 10 mm.

The axial length of the support adjustment pin from the end face of the body from which the resonator mass extends is at least 75%, preferably at least 100% and at most 200% or preferably 150% of the connection diameter of the support adjustment pin. The protrusion may drop above the upper limit mentioned above even when a high stiffness of the elastic region should be achieved. The axial length of the support adjustment pin is in the range between 4mm and 30mm, more precisely between 8mm and 20mm, calculated as absolute.

The support adjustment pin may be integrally formed with the resonator mass, i.e., a one-piece construction. In particular, the support adjustment pin may "twist" on the resonator mass when the surface of the resonator mass is twisted. Alternatively, the support adjustment pin may be pressed or screwed axially into the body of the resonator mass. The natural frequency of the resonator according to the utility model can be changed in the described manner by further pressing in or screwing in or by a smaller distance until the desired natural frequency of the resonator is reached. The projection of the support adjustment pin relative to the end face of the body of the resonator mass can then be fixed, for example by adhesive bonding of the support adjustment pin to the body. However, said adjustability of the natural frequency of the resonator according to the utility model is insignificant, which is often required for mass production of the resonator according to the utility model. More importantly, here, different resonator natural frequencies for different applications of the resonator according to the utility model can be achieved by the same elastic element and also by the same resonator mass except for the projection supporting the tuning pin.

The elastic element of the resonator according to the utility model can each be formed as an outer ring in the axial region of its receiving portion, which outer ring protrudes radially outwards relative to the axially joined tubular elastic region. Thereby, the elastic element is reinforced and strengthened in the radial direction in the region of its receiving portion. The coupling of the resonator mass to the spring element is achieved in the manner described, so that the rigidity of the combination of the resonator mass and the holding means is provided by the tubular spring region of the spring element.

The outer ring can be configured as a stop for radially blocking the respective spring element against a mating stop in the form of a tube section formed on the respective holding device. When the mating stop also extends up to an axially adjacent region of the resonator mass, the outer ring correspondingly has to protrude radially outwards also with respect to the adjacent region of the resonator mass. The elastic element in the region of its receiving portion bears against a counterpart stop of the holding device in such a way that the maximum deflection of the resonator mass in the radial direction relative to the holding device is limited by the progressively increasing rigidity of the elastic element.

The holding device of the resonator according to the utility model can each have two holding elements which are joined in the radial direction around the connecting region of the elastic element and then preferably snap-lock to one another. The holding elements can then be fastened directly to the respective trunk lid or to another structure, the vibration of which is to be reduced. The possibility of securing by means of a common carrier for the holding elements is also achieved. However, the holding element of the two holding devices is preferably formed by a one-piece base element, to which the other holding element of the two holding devices is respectively snapped after the insertion of the spring element with the resonator mass.

The holding device is formed in a particularly cost-effective manner from an injection-molded part, which is formed from plastic. The plastics used for this purpose may also be reinforced, for example fibre-reinforced, as required.

The advantages mentioned in the description of the features and the combinations of features are merely exemplary and may alternatively or additionally function without necessarily having to be realized by the embodiments according to the utility model.

The disclosure (non-scope of protection) regarding the original application document applies as follows: further features are known from the figures, in particular the illustrated geometries and relative dimensions of the components with respect to one another and the relative arrangement and functional connection of the components. The features of the different embodiments of the utility model or the combination of different technical features can likewise differ from the solutions claimed in the present application and can thus be elicited. This also relates to the features which are shown in the individual figures or mentioned in the description thereof. This feature can also be combined with different technical features.

The features mentioned in this application are to be understood with regard to their number in such a way that the stated number or a number greater than the stated number is present exactly without the use of the adverb "at least" being explicitly required. That is, when referring to, for example, one element, this is understood that there is exactly one element, two elements, or more.

Drawings

Fig. 1 is a perspective view of a resonator according to the utility model.

Fig. 2 is a top view of the resonator according to fig. 1.

Fig. 3 is a longitudinal section through the resonator shown in fig. 1 and 2, taken along the section line A-A marked in fig. 2.

Fig. 4 is a cross-sectional view of the resonator shown in fig. 1 to 3 taken along a section line B-B marked in fig. 3.

Fig. 5 is a side view of a resonator according to the utility model shown in fig. 1 to 4.

Fig. 6 is a cross-sectional view of the resonator of the present utility model shown in fig. 1 to 5, taken along section line C-C marked in fig. 5.

Fig. 7 is a partially cut-away cross-sectional view of the resonator of the present utility model shown in fig. 1 to 6, taken along the cut line D-D marked in fig. 6.

Fig. 8 shows three different components, the resonator shown in fig. 1 to 7 having the other components in addition to its resonator mass.

In the figure: 1. a resonator; 2. a resonator mass; 3. an elastic element; 4. an elastomeric material; 5. a holding device; 6. a holding member; 7. a holding member; 8. a base element; 9. a fixing device; 10. a connection region; 11. a main axis; 12. an end region; 13. a central region; 14. maximum diameter; 15. a middle region; 16. diameter; 17. an end face; 18. supporting the adjusting pin; 19. a receiving section; 20. a hole; 21. an inner peripheral surface; 22. an elastic region; 23. an outer ring; 24. pairing a stop; 25. a protruding portion; 26. an interruption unit; 27. connection diameter.

Detailed Description

The resonator 1 shown in the figures has a resonator mass 2, an elastic element 3 made of an elastomeric material 4 and a holding means 5. The holding device 5 has two holding elements 6 and 7, respectively, wherein the holding element 7 is part of a one-piece base element 8. The base element 8 is provided with a securing means 9 in the form of a dowel, a built-in bolt, a hole for a securing bolt or the like in order to connect the base element 8 with a structure whose vibrations are reduced by the resonator 1. The base element 8 and the holding element 7 and the holding element 6 are injection-molded parts made of plastic. In the assembled resonator 1, the holding element 6 and the holding element 7 cover the outside of the elastic element 3 and engage and latch with each other at the connection region 10 of each other. The holding device 5 thus assembled matches the connecting region 10 of the abutting elastic element in a play-free manner in the radial and axial directions with respect to the main axis 11 of the resonator 1 and the resonator mass 2. The resonator mass 2 has two cylindrical section-shaped end regions 12 in the direction of the main axis 11, between which two end regions 12 there is a self-cylindrical section-shaped central region 13 with a maximum diameter 14, which transitions into the end regions 12 via a middle region 15 of slightly reduced diameter 16. The intermediate region 15 has an end face 17 from which the end region 12, which is configured to support the adjusting pin 18, protrudes and in this case cooperates with a joint 19 of the spring element 3. The support adjustment pin 18 also has a connection diameter 27 that is greatly reduced relative to the diameter 16 of the intermediate region 15. The connection diameter 27 of the support adjustment pin is smaller than one fourth of the maximum diameter 14 of the resonator mass 2, preferably approximately smaller than one fifth of the maximum diameter 14 of the resonator mass 2, even smaller than one fifth of the maximum diameter 14 of the resonator mass 2, with one sixth relative to the maximum diameter 14. The intermediate region of the diameter 16 which has been slightly reduced is in principle optional. The support adjustment pin 18 protrudes from an end face 17, which can be formed directly on the central region. However, the transition of the maximum diameter 14, the diameter 16 of the resonator mass 2 through the intermediate region 15 allows, in the same configuration of the holding elements 6,7, a greater change of the resonator mass 2 to a greater physical mass. The spring element 3 is inserted out of the support adjustment pin 18 until it comes to rest against the end face 17. The receiving portion 19 of the spring element 3 is a region of closed edge through a hole 20 of the spring element 3, which hole is circular in cross section and tapers in aperture from the end close to the resonator mass 2 to the end remote from the resonator mass 2, towards the resonator mass 2. That is, the inner peripheral surface 21 of the elastic member 3 extends steplessly over the entire axial length of the elastic member 3. Between the receiving portion 19 of the spring element 3 and the connecting region 10, a tubular spring region 22 is formed by which the resonator mass 2 is elastically supported on the holding device 5. The effective stiffness of the tubular elastic region 22 is related to the fact that the length of the adjustment pin 18 extending into the hole 20 is supported. The tubular elastic region 22 protrudes radially outwards, the elastic element 3 being provided with an outer ring 23 in the region of the receptacle 19, the outer ring 23 stiffening the receptacle 19 in a radial direction with respect to the main axis 11; the outer ring protrudes radially outwards both from the tubular spring region 22 of the spring element 3 and from the central region 15 of the resonator mass 2, and when the resonator mass 2 is strongly deflected relative to the base element 8, the spring element is held against a tubular mating stop 24, which is formed on the holding device 5, by the outer ring 23. The counter stop 24 is interrupted in the circumferential direction about the main axis 11, wherein the projection 25 of the spring element 3 engages with the interruption 26, thereby effecting a blocking of a relative rotation of the parts about the main axis 11.

Claims

1. A resonator with a supporting tuning pin mass, comprising:

two holding devices (5), and

an elongated resonator mass (2) along a main axis (11) between two axial end regions (12) of cylindrical section, and

two elastic elements (3) made of an elastomer material (4) each designed to support one of the two axial end regions (12) of the resonator mass (2) on one of the two holding devices (5),

wherein the holding device (5) holds the connecting region (10) of one of the elastic elements (3) without play in the radial and axial directions with respect to the main axis (11),

wherein the resonator mass (2) has a reduced connection diameter (27) in its two axial end regions (12) relative to its maximum diameter (14), and

wherein the spring element (3) has a receptacle (19) for engaging one of the two axial end regions (12) of the resonator mass (2) and a tubular spring region (22) between the receptacle (19) and the connection region (10),

it is characterized in that the method comprises the steps of,

the two axial end regions (12) of the resonator mass (2) form a support adjustment pin (18),

wherein the connection diameter (27) is reduced by at least 70% relative to the maximum diameter (14), and

wherein the inner circumferential surface (21) of the elastic element (3) extends steplessly between the receiving portion (19) and the engaged tubular elastic region (22).

2. Resonator according to claim 1, characterized in that the resonator mass (2) is supported on the elastic element (3) in a radial direction with respect to the main axis (11) only by means of the support adjustment pin (18).

3. Resonator according to claim 1 or 2, characterized in that the elastic element (3) has a closed-edge aperture (20) extending in axial direction from the receiving portion (19) through the tubular elastic region (22) and the connection region (10).

4. A resonator according to claim 3, characterized in that the inner circumferential surface (21) of the elastic element (3) extends steplessly over the entire length of the closed-edge aperture (20).

5. A resonator according to any of the preceding claims 1 or 2, characterized in that the circular inner diameter of the inner circumferential surface (21) decreases gradually from the end close to the resonator mass (2) to the end distant from the resonator mass (2).

6. The resonator according to claim 5, wherein the inner peripheral surface (21) has a cone angle in the range of 1 ° to 6 °.

7. Resonator according to any of the preceding claims 1 or 2, characterized in that the connection diameter (27) of the support adjustment pin (18) is reduced by at least 75% or 80% or 83% with respect to the maximum diameter (14) and/or that the connection diameter (27) of the support adjustment pin (18) is in the range of 3mm-20 mm.

8. Resonator (1) according to claim 7, characterized in that the connection diameter (27) of the support adjustment pin (18) is in the range of 5mm-10 mm.

9. Resonator according to any of the preceding claims 1 or 2, characterized in that the axial length of the support adjustment pin (18) extending out of the end face (17) of the body of the resonator mass (2) is at least 75%, preferably at least 100% and at most 200% or 150%, of the connection diameter (27) of the support adjustment pin and/or that the axial length of the end face (17) of the support adjustment pin (18) extending out of the body of the resonator mass (2) is 4-30 mm.

10. Resonator according to the preceding claim/9, characterized in that the support adjustment pin (18) extends over an end face (17) of the body of the resonator mass (2) by an axial length of 8mm-20mm.

11. Resonator according to any of the preceding claims 1 or 2, characterized in that the support adjustment pin (18) is pressed or screwed axially into the body of the resonator mass (2) or is made in one piece with the resonator mass (2).

12. Resonator according to any of the preceding claims 1 or 2, characterized in that the elastic elements (3) each constitute an outer ring (23) in the axial region of the receiving portion (19), which outer ring protrudes radially outwards with respect to the engaged tubular elastic region (22).

13. Resonator according to claim 12, characterized in that the outer ring (23) is configured as a stop for radially stopping the elastic element (3) against a tube-section-shaped counter stop (24) configured on the respective holding device (5).

14. Resonator according to one of the preceding claims 1 or 2, characterized in that the holding device (5) has two holding elements (6, 7) which are joined in radial direction around the connecting region (10) of the elastic element (3) and which are snapped onto one another.

15. Resonator according to claim 14, characterized in that the holding elements (7) of the two holding devices (5) are each formed by a one-piece base element (8).

16. Resonator according to any of the preceding claims 1 or 2, characterized in that the holding means (5) are constituted by an injection-molded part made of plastic.