CN114197983A

CN114197983A - Damper

Info

Publication number: CN114197983A
Application number: CN202210058623.9A
Authority: CN
Inventors: 孙保忠; 巫扣俊; 陶建伟
Original assignee: Jiangsu Jikaizhong Technology Co ltd
Current assignee: Jiangsu Jikaizhong Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-03-18
Anticipated expiration: 2042-01-19
Also published as: CN114197983B

Abstract

The invention provides a damper which can provide damping force within a 360-degree rotation angle range, and has a large angle range of the provided damping force and a wide application range; the cap head rotates in one direction relative to the mandrel through the one-way bearing, the mandrel is driven to rotate synchronously when the cap head is rotated in a preset direction, and the cap head rotates in the opposite direction and idles relative to the mandrel, so that unexpected damping force possibly caused by misoperation is prevented from being provided; in addition, the control of the one-way rotation direction of the cap head relative to the mandrel can be realized through the mounting direction of the one-way bearing, so that the application range of the one-way rotation control damper is enlarged; through the screw-thread fit of first nut and second nut and dabber screw thread section to can realize the regulation of elastic component axial length, and then can adjust the size scope of the frictional damping power that provides between dynamic friction piece and first, the second static friction piece axial terminal surface according to actual demand, further widen the application scope of this attenuator.

Description

Damper

Technical Field

The invention relates to the technical field of dampers, in particular to a damper.

Background

With the development of science and technology, damping structures, such as refrigerator opening and closing doors, washing machine cover plates, electric cooker cover plates and the like, are gradually popularized in more and more occasions so as to avoid personal safety hazards to users when door plates or cover plates are opened or fall quickly and noise generated when the opening and closing or rising and falling processes are too fast. However, the damper in the prior art has the following problems when in use:

1) the damper in the prior art can only provide damping force within a certain rotation angle range, and the provided damping force has a small range and a narrow application range;

2) the damper in the prior art cannot realize a one-way locking function, and can provide unexpected damping force in a reverse adjustment process caused by misoperation;

3) the damper in the prior art can only provide damping force within a fixed range, and cannot adjust the magnitude range of the damping force provided according to actual requirements, so that the further popularization and application of the damper are limited.

Disclosure of Invention

In view of the above problems, the present invention provides a damper.

The technical scheme adopted by the invention is as follows:

a damper comprising a housing in which a cavity is formed, a front end of a spindle extending into the cavity and being rotatable relative to the housing, a rear end of the spindle extending from the cavity and being externally fitted with a cap, characterized in that:

a one-way bearing is arranged between the cap head and the rear end of the mandrel so that the cap head can synchronously rotate or idle relative to the mandrel;

the mandrel comprises a positioning section positioned in the middle, a first nut, a second nut, a first gasket, an elastic piece, a first dynamic friction plate, a static friction plate and a second dynamic friction plate are sequentially sleeved outside the front end of the positioning section from front to back, the first nut and the second nut are in threaded fit with the mandrel, the first dynamic friction plate and the second dynamic friction plate rotate synchronously along with the mandrel, and the static friction plate is fixedly installed inside the shell; the thread upper cover is fixed on the inner wall of the shell, and the rear end of the positioning section is located on the inner side of the thread upper cover and can rotate relative to the thread upper cover.

As a further preferred embodiment of the present invention, the inner wall of the outer shell is circumferentially and uniformly provided with a plurality of positioning protrusions at equal intervals in a protruding manner, and the outer edge of the static friction plate is circumferentially and uniformly provided with a plurality of positioning grooves in a recessed manner at equal intervals in a recessed manner, wherein the positioning grooves are installed in cooperation with the positioning protrusions.

As a further preferred embodiment of the present invention, the mandrel comprises a positioning section, a threaded section and a rotating section located at the front end of the positioning section, and a middle section and a cap section located at the rear end of the positioning section; the thread section, the rotating section, the positioning section and the middle section are all positioned in the cavity of the shell; the cap head segment extends from the interior of the cavity and is located within the interior of the cap head.

In a further preferred embodiment of the present invention, an outer wall of the threaded section is provided with an external thread that is threadedly engaged with the first nut and the second nut.

In a further preferred embodiment of the present invention, the elastic member is externally sleeved on the outer periphery of the rotating section, and one end of the elastic member abuts against the gasket and the other end abuts against the first dynamic friction plate.

As a further preferable embodiment of the present invention, the hole diameters of the central holes of the first dynamic friction plate and the second dynamic friction plate match with the outer diameter of the rotating section, and the hole diameter of the central hole of the fixed friction plate is slightly larger than the outer diameter of the rotating section.

As a further preferred embodiment of the present invention, the positioning section is located between the positioning projection and the screw-threaded upper cap in the axial direction.

In a further preferred embodiment of the present invention, a plug is attached to a rear end of the cap head, and a screw is attached to a rear end of the core shaft.

As a further preferred embodiment of the present invention, a second gasket is further installed between the rear side of the positioning section and the front side of the screw thread upper cover.

As a further preferred embodiment of the present invention, the rear end inner wall of the housing is provided with an internal thread, the rear end outer wall of the screw thread upper cover is provided with an external thread, and the screw thread upper cover is fixedly connected to the inner wall of the housing by screw-fitting of the rear end external thread and the rear end internal thread of the housing.

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention provides a damper which can provide damping force within a 360-degree rotation angle range, and has a large angle range of the provided damping force and a wide application range.

(2) The invention provides a damper, which realizes the unidirectional rotation of a cap head relative to a mandrel through a unidirectional bearing, drives the mandrel to rotate synchronously when the cap head is rotated according to a preset direction, and idles relative to the mandrel when the cap head is rotated according to the opposite direction, thereby realizing the accurate guiding and avoiding the providing of unexpected damping force possibly caused by misoperation; in addition, the control of the one-way rotation direction of the cap head relative to the mandrel can be realized through the mounting direction of the one-way bearing, so that the application range of the one-way rotation control damper is enlarged.

(3) The invention provides a damper, which can realize the adjustment of the axial length of an elastic part through the threaded matching of a first nut and a second nut with a threaded section of a mandrel, further adjust the range of the friction damping force provided between a dynamic friction plate and the axial end faces of a first static friction plate and a second static friction plate according to actual requirements, and further widen the application range of the damper.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

FIG. 4 is a schematic structural view of the housing of the present invention;

FIG. 5 is a schematic structural view of a mandrel of the present invention;

FIG. 6 is a schematic structural diagram of a static friction plate according to the present invention.

FIG. 7 is a schematic structural diagram of a first dynamic friction plate and a second dynamic friction plate according to the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Referring to fig. 1 to 7, the damper provided by the present invention includes a housing 1, a cavity is formed inside the housing 1, a front end of a mandrel 11 extends into the cavity and can rotate relative to the housing 1, and a rear end of the mandrel 11 extends out of the cavity and is sleeved with a cap 14;

as shown in fig. 1 to 3, in the present embodiment, a one-way bearing 12 is provided between the cap head 14 and the rear end of the mandrel 11 to enable the cap head 14 to synchronously rotate or idle relative to the mandrel 11; the cap head rotates in one direction relative to the mandrel through the one-way bearing, the mandrel is driven to rotate synchronously when the cap head is rotated in a preset direction, and the cap head rotates in the opposite direction and idles relative to the mandrel, so that the accurate guiding is realized, and the unexpected damping force possibly caused by misoperation is prevented from being provided; for example, when the preset direction is clockwise rotation, the cap head can drive the mandrel to rotate synchronously when the cap head is rotated clockwise, and the cap head can only idle relative to the mandrel when the cap head is rotated anticlockwise.

In addition, the control of the one-way rotation direction of the cap head relative to the mandrel can be realized through the mounting direction of the one-way bearing, so that the application range of the one-way rotation control damper is enlarged; when the preset direction needs to be adjusted to be the anticlockwise rotation direction, only the one-way bearing on the damper needs to be detached and then reversely mounted, the preset direction is adjusted to be the anticlockwise rotation direction, the cap head rotates relative to the mandrel hole when the cap head rotates clockwise, and the cap head can drive the mandrel to rotate synchronously when the cap head rotates anticlockwise.

As shown in fig. 2, in this embodiment, the mandrel 11 includes a positioning section 11-3 located in the middle, and a first nut 2, a second nut 3, a first gasket 4, an elastic member 5, a first dynamic friction plate 6, a static friction plate 7, and a second dynamic friction plate 8 are sequentially sleeved outside the front end of the positioning section 11-3 from front to back; the rear side of location section 11-3 with still install second gasket 9 between the front side of screw thread upper cover 10, in this embodiment, first gasket 4 chooses for use the plastics material in order to satisfy the elasticity demand with 5 butts of elastic component, and second gasket 9 chooses for use stainless steel material in order to satisfy the conflict demand with metal material such as dabber 11 and screw thread upper cover 10.

As shown in fig. 5, the mandrel 11 in this embodiment includes a positioning section 11-3, a threaded section 11-1 and a rotating section 11-2 located at the front end of the positioning section 11-3, and a middle section 11-4 and a cap head section 11-5 located at the rear end of the positioning section 11-3; the threaded section 11-1, the rotating section 11-2, the positioning section 11-3 and the middle section 11-4 are all positioned in the cavity of the shell 1; the cap head section 11-5 extends from the interior of the cavity and is located inside the cap head 14.

The first nut 2 and the second nut 3 are in threaded fit with the mandrel 11, as shown in fig. 5, external threads in threaded fit with the first nut 2 and the second nut 3 are arranged on the outer wall of the threaded section 11-1, and the adjustment of the axial length of the elastic part can be realized through the threaded fit of the first nut and the second nut with the threaded section of the mandrel, so that the size range of the friction damping force provided between the dynamic friction plate and the axial end faces of the first static friction plate and the second static friction plate can be adjusted according to actual requirements, and the application range of the damper is further expanded;

as shown in fig. 2, in the present embodiment, the elastic member 5 is sleeved on the outer periphery of the rotating section 11-2, and one end of the elastic member 5 abuts against the gasket 4, and the other end abuts against the first dynamic friction plate 6, so as to press the first dynamic friction plate 6 through the elastic member, thereby adjusting the frictional damping force between the static friction plate 7 and the end surfaces of the first and second dynamic friction plates on both sides. In the present embodiment, the elastic member 5 is a disc spring, and those skilled in the art know that the elastic member 5 may also be any other kind of elastic member according to the actual use requirement, and the specific kind of the elastic member 5 should not be taken as a further limitation to the protection scope of the present application.

As shown in fig. 2-3, the first dynamic friction plate 6 and the second dynamic friction plate 8 rotate synchronously with the mandrel 11, and the static friction plate 7 is fixedly installed inside the outer shell 1; as shown in fig. 4 and 6, in this embodiment, a plurality of positioning protrusions 1-1 are uniformly and convexly arranged on the inner wall of the outer shell 1 at equal intervals in the circumferential direction, a plurality of positioning grooves 7-1 matched with the positioning protrusions 1-1 are uniformly and concavely arranged on the outer edge of the static friction plate 7 at equal intervals in the circumferential direction, and the static friction plate 7 is fixedly installed inside the outer shell 1 by the positioning cooperation of the positioning protrusions and the positioning grooves. In this embodiment, the two end surfaces of the static friction plate 7 and the end surfaces of the first dynamic friction plate 6 and the second dynamic friction plate 8 provide damping force, so that the static friction plate 7, the first dynamic friction plate 6 and the second dynamic friction plate 8 are all made of wear-resistant materials to further ensure the working stability and prolong the service life.

In this embodiment, as shown in fig. 5-7, the aperture of the central hole 6-1 of the first dynamic friction plate 6 and the second dynamic friction plate 8 is matched with the outer diameter of the rotating section 11-2, and the aperture of the central hole 7-2 of the fixed friction plate 7 is slightly larger than the outer diameter of the rotating section 11-2, so that the advantage of this arrangement is that it can ensure the fixed connection between the first and second dynamic friction plates and the mandrel, and at the same time, it can ensure that the mandrel smoothly rotates inside the central hole of the static friction plate without any retardation when the mandrel rotates synchronously with the first and second dynamic friction plates.

As shown in fig. 2 to 3, a screw top cover 10 is fixed to the inner wall of the housing 1, and the rear end of the positioning section 11-3 is located inside the screw top cover 10 and can rotate relative to the screw top cover 10. In this embodiment, the specific installation manner is that the inner wall of the rear end of the housing 1 is provided with an internal thread, the outer wall of the rear end of the thread upper cover 10 is provided with an external thread, and the thread upper cover 10 is fixedly connected with the inner wall of the housing 1 through the thread matching of the external thread of the rear end and the internal thread of the rear end of the housing 1, as shown in fig. 2, so that the positioning section 11-3 is axially located between the positioning protrusion 1-1 and the thread upper cover 10, and when the mandrel 11 rotates relative to the housing 1, the axial displacement cannot be generated because both axial sides are blocked by the positioning protrusion 1-1 and the thread upper cover 10.

As shown in fig. 2, a plug 15 is installed at the rear end of the cap head 14, the core shaft 11 is secured inside the cap head 14 by the plug 15, and a screw 13 is installed at the rear end of the core shaft 11 to strengthen the end of the core shaft 11 when the cap head 14 collides with the end of the core shaft 11.

The damper provided by the embodiment can provide damping force within a 360-degree rotating angle range, and the angle range of the provided damping force is large, and the application range is wide. Meanwhile, the cap head 14 rotates in one direction relative to the mandrel 11 through the one-way bearing, when the cap head 14 rotates in the preset direction, the mandrel 11 is driven to rotate synchronously, and when the cap head 14 rotates in the opposite direction, the cap head 14 idles relative to the mandrel 11, so that the accurate guiding is realized, and the providing of unexpected damping force possibly caused by misoperation is avoided; in addition, the control of the one-way rotation direction of the cap head 14 relative to the mandrel 11 can be realized by the mounting direction of the one-way bearing 12, thereby increasing the application range of the one-way rotation control friction damper. In addition, the first nut 2 and the second nut 3 are in threaded fit with the threaded section 11-1 of the mandrel 11, so that the axial length of the elastic part 5 can be adjusted, the friction damping force provided between the dynamic friction plate 7 and the axial end faces of the first and second static friction plates can be adjusted within a range according to actual requirements, and the application range of the damper is further widened.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A damper comprising a housing (1), a cavity being formed inside the housing (1), a front end of a spindle (11) extending inside the cavity and being rotatable with respect to the housing (1), a rear end of the spindle (11) extending from inside the cavity and being externally fitted with a cap (14), characterized in that:

a one-way bearing (12) is arranged between the cap head (14) and the rear end of the mandrel (11) so that the cap head (14) can synchronously rotate or idle relative to the mandrel (11);

the mandrel (11) comprises a positioning section (11-3) located in the middle, a first nut (2), a second nut (3), a first gasket (4), an elastic piece (5), a first movable friction plate (6), a static friction plate (7) and a second movable friction plate (8) are sequentially sleeved outside the front end of the positioning section (11-3) from front to back, the first nut (2) and the second nut (3) are in threaded fit with the mandrel (11), the first movable friction plate (6) and the second movable friction plate (8) synchronously rotate along with the mandrel (11), and the static friction plate (7) is fixedly installed inside the shell (1); the thread upper cover (10) is fixed on the inner wall of the shell (1), and the rear end of the positioning section (11-3) is positioned on the inner side of the thread upper cover (10) and can rotate relative to the thread upper cover (10).

2. A damper as claimed in claim 1, wherein: the inner wall of the shell (1) is circumferentially and uniformly protruded with a plurality of positioning protrusions (1-1) at equal intervals, and the outer edge of the static friction plate (7) is circumferentially and uniformly recessed with a plurality of positioning grooves (7-1) which are matched with the positioning protrusions (1-1) for installation.

3. A damper as claimed in claim 1, wherein: the mandrel (11) comprises a positioning section (11-3), a threaded section (11-1) and a rotating section (11-2) which are positioned at the front end of the positioning section (11-3), and a middle section (11-4) and a cap head section (11-5) which are positioned at the rear end of the positioning section (11-3); the threaded section (11-1), the rotating section (11-2), the positioning section (11-3) and the middle section (11-4) are all positioned in a cavity of the shell (1); the cap head section (11-5) protrudes from the interior of the cavity and is located inside the cap head (14).

4. A damper as claimed in claim 3, wherein: the outer wall of the threaded section (11-1) is provided with external threads matched with the first nut (2) and the second nut (3) in a threaded mode.

5. A damper as claimed in claim 3, wherein: the elastic piece (5) is sleeved on the periphery of the rotating section (11-2), one end of the elastic piece (5) is abutted to the gasket (4), and the other end of the elastic piece is abutted to the first movable friction plate (6).

6. A damper as claimed in claim 3, wherein: the aperture of the central hole (6-1) of the first movable friction plate (6) and the aperture of the central hole (6-1) of the second movable friction plate (8) are matched with the outer diameter of the rotating section (11-2), and the aperture of the central hole (7-2) of the fixed friction plate (7) is slightly larger than the outer diameter of the rotating section (11-2).

7. A damper as claimed in claim 2, wherein: the positioning section (11-3) is located between the positioning bulge (1-1) and the thread upper cover (10) in the axial direction.

8. A damper as claimed in claim 1, wherein: a plug (15) is installed at the rear end of the cap head (14), and a screw (13) is installed at the rear end of the mandrel (11).

9. A damper as claimed in claim 1, wherein: and a second gasket (9) is also arranged between the rear side of the positioning section (11-3) and the front side of the threaded upper cover (10).

10. A damper as claimed in claim 1, wherein: the rear end inner wall of shell (1) is provided with the internal thread, the rear end outer wall of screw thread upper cover (10) is provided with the external screw thread, screw thread upper cover (10) through the rear end external screw thread with the rear end internal screw thread cooperation of shell (1) with the inner wall fixed connection of shell (1).