CN219198002U

CN219198002U - Variable damping vibration attenuation device

Info

Publication number: CN219198002U
Application number: CN202223236839.4U
Authority: CN
Inventors: 张健; 杨明; 林求; 马大江
Original assignee: Cnc Driveline Technology Co ltd
Current assignee: Cnc Driveline Technology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-06-16
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a variable damping vibration attenuation device, which belongs to the technical field of torsional vibration attenuation damping equipment, and comprises: a driving element provided with a first window; the shell is provided with a second window, the driving element is rotatably arranged on the shell, the driving element and the shell are coaxially arranged, the positions of the first window and the second window correspond to each other, and the driving element is rotated to enable the first window and the second window to be overlapped to form a movable window; a spring assembly disposed within the movable window, the driving element compressing and releasing the spring assembly by rotation; the first friction assembly is fixed on the shell; the second friction component is rotatably arranged on the driving element, the second friction component is connected with one end of the spring component, and the first friction component is attached to the second friction component.

Description

Variable damping vibration attenuation device

Technical Field

The utility model relates to the technical field of torsional vibration damping equipment, in particular to a variable damping vibration damper.

Background

The torsional vibration damper is an important element in an automobile clutch and mainly comprises an elastic element, a damping element and the like, wherein the spring element is used for reducing the torsional rigidity of the head end of a transmission system, so that the inherent frequency of a certain order of a transmission system is reduced, the inherent vibration mode of the system is changed, and the excitation caused by the main harmonic excitation of the torque of an engine can be avoided; the damping element is used for effectively dissipating vibration energy.

Torsional vibration damper is composed of two parts, a spring and a damper, the damping can be achieved by a friction device provided with a friction washer placed under axial load by means of an elastic washer, so that some of the energy accumulated in the spring is dissipated by friction. The existing torsional vibration damper can trigger the friction device through rotation in any direction, so that the friction device can consume energy accumulated in the spring in each operation stage of the torsional vibration damper, and the requirements of specific applications cannot be met.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems of the prior art, and therefore proposes a variable damping vibration attenuation device whose friction damping portion acts only at a specific stage.

According to an embodiment of the present utility model, a variable damping vibration attenuation device includes: a driving element provided with a first window; the shell is provided with a second window, the driving element is rotatably arranged on the shell, the driving element and the shell are coaxially arranged, the positions of the first window and the second window correspond to each other, and the driving element is rotated to enable the first window and the second window to be overlapped to form a movable window; a spring assembly disposed within the movable window, the driving element compressing and releasing the spring assembly by rotation; the first friction assembly is fixed on the shell; the second friction component is rotatably arranged on the driving element, the second friction component is connected with one end of the spring component, and the first friction component is attached to the second friction component.

The variable damping vibration attenuation device provided by the embodiment of the utility model has at least the following beneficial effects: one end of the second friction assembly is connected with one end of the spring assembly, and one end of the spring assembly connected with the second friction assembly moves only in a specific operation stage, so that the variable damping vibration attenuation device can trigger friction damping only in a corresponding operation stage, and therefore the variable damping vibration attenuation device is suitable for specific vehicle power transmission requirements.

According to some embodiments of the utility model, the first window and the second window are each provided with a plurality of first windows and second windows, which are evenly distributed along the circumference of the driving element.

According to some embodiments of the present utility model, a spring assembly includes a first spring seat, a second spring seat, and a spring body, the first spring seat and the second spring seat being disposed at opposite ends of the spring body, respectively, and a second friction assembly coupled to the first spring seat.

According to some embodiments of the utility model, the first friction assembly includes a first friction washer secured to the housing.

According to some embodiments of the utility model, the first friction assembly further comprises an elastic washer disposed between the first friction washer and the housing, the elastic washer being configured to apply an axial force to the first friction washer.

According to some embodiments of the utility model, the second friction assembly comprises a second friction washer rotatably arranged on the driving element, the second friction washer being provided with a clamping jaw portion connected with the first spring seat, an end face of the second friction washer being in abutment with an end face of the first friction washer.

According to some embodiments of the utility model, the spring assemblies are provided with four groups of spring assemblies, which are evenly distributed along the circumference of the drive element.

According to some embodiments of the utility model, two claw portions are provided, the two claw portions are arranged on the second friction washer in a central symmetry manner, and the two claw portions are respectively connected with the two symmetrical first spring seats.

According to some embodiments of the utility model, the first friction assembly further comprises an axial support element fixed to the housing, the axial support element being conformed to the second friction washer.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of a variable damping vibration attenuation device according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a right side cross-sectional view of FIG. 2;

fig. 4 is a schematic view of the internal structure of fig. 1.

Reference numerals:

a driving element 100; a first window 110;

a housing 200; a second window 210;

a first spring seat 310; a second spring seat 320; a spring body 330;

a first friction washer 410; an elastic washer 420; an axial support element 430;

a second friction washer 510; the claw portion 511.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A variable damping vibration attenuation device according to an embodiment of the present utility model is described with reference to fig. 1 to 4.

As shown in fig. 1 to 4, a variable damping vibration attenuation device according to an embodiment of the present utility model includes: a driving element 100, wherein a first window 110 is arranged on the driving element 100; the casing 200 is provided with a second window 210, the driving element 100 is rotatably arranged on the casing 200, the driving element 100 is coaxially arranged with the casing 200, the positions of the first window 110 and the second window 210 correspond to each other, and the driving element 100 is rotated to enable the first window 110 and the second window 210 to overlap to form a movable window; a spring assembly disposed within the movable window, the driving element 100 compressing and releasing the spring assembly by rotation; a first friction assembly fixed to the housing 200; and the second friction assembly is rotatably arranged on the driving element 100, is connected with one end of the spring assembly, and is attached to the first friction assembly.

As shown in fig. 1 to 4, 4 first windows 110 are uniformly distributed on the driving element 100 along the circumferential direction, 4 second windows 210 are uniformly distributed on the housing 200 along the axial direction, the driving element 100 and the housing 200 are coaxially arranged, and the positions of the first windows 110 and the second windows 210 correspond to each other, so that the first windows 110 and the second windows 210 overlap to form a movable window, and when the driving element 100 rotates, the area of the overlapping part of the first windows 110 and the second windows 210 increases or decreases, so that the size of the movable window is changed. The spring component is arranged in the movable window, and is compressed when the movable window is contracted; when the active window increases, the spring assembly is released.

The spring assembly includes a first spring seat 310, a second spring seat 320 and a spring body 330, the first spring seat 310 and the second spring seat 320 are disposed at two ends of the spring body 330, respectively, and the second friction assembly is connected with the first spring seat 310. Taking the uppermost spring assembly in fig. 2 as an example, the spring body 330 is disposed in the left-right direction, the first spring seat 310 is disposed at the right end of the spring body 330, the second spring seat 320 is disposed at the left end of the spring body 330, when the driving element 100 rotates counterclockwise, the driving element 100 pushes the first spring seat 310 to the left, and the second spring seat 320 is kept against the housing 200, so that the first spring seat 310 and the second spring seat 320 are close to each other, and the spring body 330 is compressed.

The first friction assembly includes a first friction washer 410, the first friction washer 410 being fixed to the housing 200. The first friction assembly further includes an elastic washer 420, the elastic washer 420 being disposed between the first friction washer 410 and the housing 200, the elastic washer 420 being configured to apply an axial force to the first friction washer 410. The second friction assembly includes a second friction washer 510, the second friction washer 510 is rotatably disposed on the driving element 100, a claw portion 511 is disposed on the second friction washer 510, the claw portion 511 is connected with the first spring seat 310, and an end surface of the second friction washer 510 is attached to an end surface of the first friction washer 410.

The first friction assembly further includes an axial support member 430, the axial support member 430 being secured to the housing 200, the axial support member 430 being in engagement with the second friction washer 510. The axial support member 430 and the first friction washer 410 are pressed against one side and the other side of the annular friction surface of the second friction washer 510.

As shown in fig. 3, the right end surface of the first friction washer 410 is attached to the left end surface of the second friction washer 510, the second friction washer 510 is rotatably provided on the driving element 100, the first friction washer 410 is fixed to the housing 200 by the elastic washer 420, the elastic washer 420 presses the first friction washer 410 against the second friction washer 510 in the axial direction, and thereby friction damping is generated between the first friction washer 410 and the second friction washer 510 when the second friction washer 510 rotates.

As shown in fig. 2, the jaw portion 511 of the second friction washer 510 is connected to the first spring seat 310, taking the uppermost spring assembly as an example:

when the driving element 100 rotates counterclockwise from the initial position, the driving element 100 pushes the first spring seat 310 to move left, the first spring seat 310 drives the clamping portion 511 to rotate counterclockwise, so that the second friction washer 510 rotates counterclockwise relative to the first friction washer 410, friction damping is generated between the first friction washer 410 and the second friction washer 510, the first spring seat 310 rotates clockwise when the spring returns, the second friction washer 510 rotates counterclockwise relative to the first friction washer 410, and friction damping is also generated between the first friction washer 410 and the second friction washer 510.

When the driving element 100 is clockwise from the initial position, the first spring seat 310 is held against the housing 200, so that there is no relative movement between the first friction washer 410 and the second friction washer 510, and no friction damping occurs.

Thus, a counterclockwise rotation of the driving element 100 from the initial position and its corresponding reset action trigger friction damping, while a clockwise rotation of the driving element 100 from the initial position and its corresponding reset action do not trigger friction damping.

As shown in fig. 4, two click portions 511 are provided, the two click portions 511 are provided on the second friction washer 510 in a center-symmetrical manner, and the two click portions 511 are respectively connected to the symmetrical two first spring seats 310.

In summary, one end of the second friction assembly is connected to one end of the spring assembly, and the end of the spring assembly connected to the second friction assembly moves only in a specific operation phase, so that the variable damping vibration attenuation device triggers friction damping only in a corresponding operation phase, thereby adapting to specific vehicle power transmission requirements.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A variable damping vibration attenuation device, comprising:

-a driving element (100), the driving element (100) being provided with a first window (110);

the shell (200), a second window (210) is arranged on the shell (200), the driving element (100) is rotatably arranged on the shell (200), the driving element (100) and the shell (200) are coaxially arranged, the first window (110) corresponds to the second window (210), and the driving element (100) is rotated to enable the first window (110) and the second window (210) to be overlapped to form a movable window;

-a spring assembly arranged within the movable window, the driving element (100) compressing and releasing the spring assembly by rotation;

a first friction assembly secured to the housing (200);

the second friction component is rotatably arranged on the driving element (100), the second friction component is connected with one end of the spring component, and the first friction component is attached to the second friction component.

2. The variable damping vibration attenuation device according to claim 1, characterized in that the first window (110) and the second window (210) are each provided with a plurality, and the plurality of first windows (110) and the plurality of second windows (210) are uniformly distributed along the circumferential direction of the driving element (100).

3. The variable damping vibration attenuation device of claim 1, wherein the spring assembly comprises a first spring seat (310), a second spring seat (320) and a spring body (330), the first spring seat (310) and the second spring seat (320) are disposed at respective ends of the spring body (330), and the second friction assembly is connected to the first spring seat (310).

4. A variable damping vibration attenuation device according to claim 3, wherein said first friction assembly comprises a first friction washer (410), said first friction washer (410) being fixed to said housing (200).

5. The variable damping vibration attenuation device of claim 4, wherein the first friction assembly further comprises an elastic washer (420), the elastic washer (420) being disposed between the first friction washer (410) and the housing (200), the elastic washer (420) being configured to apply an axial force to the first friction washer (410).

6. The variable damping vibration attenuation device of claim 5, wherein the second friction assembly comprises a second friction washer (510), the second friction washer (510) is rotatably disposed on the driving element (100), a claw portion (511) is disposed on the second friction washer (510), the claw portion (511) is connected with the first spring seat (310), and an end face of the second friction washer (510) is fitted with an end face of the first friction washer (410).

7. A variable damping vibration attenuation device according to claim 6, characterized in that the spring assemblies are provided with four groups, four groups being equally distributed along the circumference of the drive element (100).

8. A variable damping vibration attenuation device according to claim 7, characterized in that two of said claw portions (511) are provided, two of said claw portions (511) being provided on said second friction washer (510) centrally symmetrically, two of said claw portions (511) being connected to two of said first spring seats (310) symmetrically, respectively.

9. The variable damping vibration attenuation device of claim 8, wherein the first friction assembly further comprises an axial support element (430), the axial support element (430) being secured to the housing (200), the axial support element (430) conforming to the second friction washer (510).