CN221162395U

CN221162395U - Limiting vibration reduction component and automobile seat

Info

Publication number: CN221162395U
Application number: CN202322513783.0U
Authority: CN
Inventors: 唐勋
Original assignee: Yanfeng International Automotive Technology Co Ltd
Current assignee: Yanfeng International Automotive Technology Co Ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-06-18
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a limiting vibration reduction component, which is characterized in that a pin shaft part is used for tightly connecting a first fixing piece and a second fixing piece, a vibration reduction component is further arranged between the first fixing piece and the second fixing piece, and the vibration reduction component enables the first fixing piece and the second fixing piece to form flexible connection to inhibit vibration transmission. Limiting structures are arranged on two sides of the vibration reduction component to limit the axial limit compression amount of the vibration reduction component, so that the problem of vibration reduction failure caused by transitional assembly or compression is prevented.

Description

Limiting vibration reduction component and automobile seat

Technical Field

The utility model relates to the field of automobile seats, in particular to a limiting vibration reduction component and an automobile seat.

Background

In order to meet the experience demands of passengers on comfort and intellectualization, a large number of electric adjustment functions, such as boss keys, electric massage, headrest sounds, zero gravity leveling, long sliding rails and the like, are provided for a plurality of electric automobile seats, so that the size of the seats is larger, the weight is heavier, and the mass center is also greatly different from the prior art. Meanwhile, under the promotion of the whole vehicle light-weight engineering, the thickness of the framework is reduced, so that the overall chair modal rigidity evaluation is lower than that of the prior chair structure. Therefore, when the vehicle encounters a bumpy road surface, the occupant is more significantly felt by the vibration transmitted from the seat, reducing the riding comfort.

Chinese patent publication No. CN116353450a discloses a vehicle seat in which transmission of vibration is suppressed at a metal fastening joint by providing a split-type elastic body between a sleeve and two metal connectors. The structure avoids the transitional compression of the elastic piece through the inner sleeve structure and the outer sleeve structure, but part of the elastic body is required to be fixed on one side of the metal gasket in advance, the structure is complex, the number of assembly parts is large, and the problems of misloading and missing parts are easy to occur.

Disclosure of utility model

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A limiting vibration reduction component, a pin shaft part which is used for tightly jointing a first fixing piece and a second fixing piece, a vibration reduction component is further arranged between the first fixing piece and the second fixing piece, and the vibration reduction component enables the first fixing piece and the second fixing piece to form flexible connection to inhibit vibration transmission;

the first fixing piece is internally provided with a first through hole, the second fixing piece is internally provided with a second through hole, the shoulder part on the pin shaft part is divided into a first section and a second section with unequal outer diameters, the outer diameter of the second section is smaller than that of the first section, and when the second section penetrates into the second fixing piece through the second through hole, the shoulder part and the second fixing piece are connected to form limiting of limiting compression amount of the vibration reduction component.

Further, the outer periphery of the vibration reduction member is provided with a concave portion, and the concave portion is wrapped on the inner periphery of the first through hole so as to form a buffer layer on the first fixing piece, so that the flexible connection is achieved.

Further, the concave part is in a wave-shaped concave or arc-shaped concave shape.

Further, the other end of the pin shaft portion has a large head portion for applying a clamp to the first fixing member.

Further, the second section and the second through hole are respectively provided with a thread structure for mutual fastening.

The pin shaft part is sleeved with a limit sleeve synchronously inserted into the through hole of the vibration reduction member, and the lower part of the limit sleeve is provided with an extending part which extends outwards along the circumferential direction and is abutted with the end part of the vibration reduction member so as to limit the limit compression amount of the vibration reduction member in the axial direction of the limit sleeve.

Further, the upper part of the limit sleeve is provided with a convex part protruding outwards along the circumferential direction, the outer diameter of the convex part is larger than the inner diameter of the through hole of the vibration reduction member, and when the limit sleeve is inserted into the through hole of the vibration reduction member, the convex part is in interference fit with the vibration reduction through hole.

Further, the convex part is in an arc convex shape or a cone convex shape.

Further, the outer periphery of the vibration reduction member is provided with a concave portion, and the concave portion is wrapped on the inner periphery of the second through hole so as to form a buffer layer on the second fixing piece, so that the flexible connection is achieved.

Further, a nut is fastened at one end of the pin shaft portion, the nut provides support for the side portion of the protruding portion, the upper portion of the limiting sleeve is matched with the first fixing piece, limiting compression amount of the vibration reduction component in the axial direction is limited, and the large head portion is arranged at the other end of the pin shaft portion and provides the tight joint force for the first fixing piece.

Further, a concave portion is formed in the outer periphery of the vibration reduction member, and the concave portion is wrapped on the inner periphery of the first through hole so that a buffer layer is formed on the first fixing piece, and flexible connection is achieved.

Further, a nut is fastened at one end of the pin shaft portion, the nut is in abutting connection with the second fixing piece to limit, the second fixing piece is matched with the upper portion of the limiting sleeve to limit the limiting compression amount of the vibration reduction component in the axial direction, and the large head portion is arranged at the other end of the pin shaft portion to provide the tight joint force for the protruding portion.

The utility model also provides an automobile seat, which is provided with the limiting vibration reduction component.

The utility model has the beneficial effects that:

According to the limiting vibration reduction component and the automobile seat, the limiting structures are arranged on the two sides of the vibration reduction component, so that the axial limiting compression amount of the vibration reduction component is limited, and the problem of vibration reduction failure caused by transitional assembly or compression is prevented.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is an exploded view of a second embodiment of the present utility model.

Fig. 4 is an assembly view of fig. 3 with the vibration reducing member removed.

Fig. 5 is an assembled cross-sectional view of fig. 3.

Fig. 6 is a schematic diagram of a third embodiment of the present utility model.

Fig. 7 is a schematic diagram of an application of the present utility model.

Fig. 8 is a second schematic diagram of the application of the present utility model.

Fig. 9 is an enlarged view of a portion of the junction of fig. 8.

Fig. 10 is a third schematic diagram of the application of the present utility model.

Fig. 11 is an enlarged view of a portion of the junction of fig. 10.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and the above description is for convenience of description of the present utility model to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the application may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide yet additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.

Fig. 1 and 2 show the structure of the limit vibration damping member, the first fixing member 10 and the second fixing member 20 are fixed by a pin member 30. The first fixing member 10 is provided with a first through hole, and the second fixing member 20 is provided with a second through hole 21.

The vibration reducing member 40 is fitted around the inner circumference of the first through hole 11 so that the first and second fixtures 10 and 20 become in flexible contact to eliminate vibration.

The middle portion of the vibration damping member 40 is provided with an annular recess 41 inwardly along the outer circumference, the recess 41 may be a wavy recess, an arc recess, etc., and the recess 41 is preferably square groove-shaped as shown in fig. 1 and 2. The recess 41 allows the damper member 40 to be engaged with the inner surface of the first through hole 11, and when the damper member 40 is disposed on the first mount 10, the recess 41 is wrapped around the outer periphery of the first through hole 11, so that flexible contact is formed between the first mount 10 and the second mount 20 and the pin member 30.

In order to facilitate the nesting of the vibration-damping member 40 into the first through-hole 11, it is preferable that a slit 42 is further provided along the axial direction of the vibration-damping member 40, and the vibration-damping member 40 is further deformed by pressing to be assembled.

The pin member 30 has a large head 33 at one end providing a limit and is divided into a first segment 31 and a second segment 32 at the other end, the first segment 31 having a larger outer diameter than the second segment 32 and being provided with a transitional shoulder 34 at the junction of the two. The first segment 31 passes through the vibration damping member through hole 42, the first through hole 11, and the second through hole 21 in this order along with the second segment 32, and then enters the vibration damping member through hole 42 and the first through hole 11. Since the outer diameter of the first section 31 is larger than the inner diameter of the second through hole 21, abutment of the shoulder 34 with the second mount 20 forms a stepped configuration, and the limited amount of compression in the axial direction of the vibration damping member 40 is defined by the shoulder 34, i.e., the axial length of the first section 31. The outer circumference of the second section 32 may be provided with a screw structure matching with the second through hole 21, and the second section 32 may be screwed into the second through hole 21. When the shoulder 34 contacts the surface of the second fixture 20, a limit is established such that the damping member 40 is confined within a reasonable gap between the large head 33 and the shoulder 34, preventing the pin component 30 from transitioning deep into the second fixture 20, resulting in crushing of the damping member 40.

Fig. 3 to 5 show a second embodiment of the vibration reducing member, a stop collar 50 is provided at the lower portion of the vibration reducing member 40 to be inserted into the vibration reducing member through hole 42, the stop collar 50 has a protrusion 51 at the top thereof along the outer circumference, the protrusion 51 may be an arc-shaped protrusion, a cone-shaped protrusion, etc., and the outer diameter of the protrusion 51 is slightly larger than the inner diameter of the vibration reducing member through hole 42. The bottom of the stop collar 50 has an outwardly extending projection 52, and as the stop collar 50 is inserted into the damping member through hole 42, the projection 52 engages the bottom of the damping member 40 to limit the maximum insertion travel, and the projection 51 and the damping member through hole 42 form an interference fit to create friction to prevent the stop collar 50 from backing out. The damping member 40 is fitted over the second through hole 21, screwed down with the pin part 30 by the nut 50, and the limiting amount of compression in the axial direction of the damping member 40 is limited by the axial dimension of the stop collar 50 (the top clearance fit of the stop collar 50), that is, a step-like structure extending from the stop collar 50 to the first fixture 10 is also formed when the boss 51 is engaged with the lower portion of the first fixture 10, and the distance between the first fixture 10 and the protruding portion 52 is the limiting compression value.

Fig. 6 shows a third embodiment, in which the damping member 40 is fitted over the first through hole 11, and the stopper 50 is inserted reversely from the top of the damping member through hole 42 and constitutes the stopper protection damping member 40 between the second fixing piece 20 and the large head 33. The technical scheme of reverse assembly is formed by the method and the prior embodiment.

Fig. 7 to 10 show the application of the structure to key connection parts in a seat system, such as a slide rail 3 and a slide rail connection support leg 2, a headrest rod 6 and a seat frame 5, the seat frame 5 and a fixing bracket 7 for fixing on the slide rail connection support leg 2, and a limit vibration damping member 1 is additionally arranged at the connection part, so that the vibration damping member 40 is correctly arranged and a vibration damping effect is ensured between two metal pieces.

In the description, an element is referred to as being "on," "fixed" to, "connected" to, "engaged" with, etc. another element, which may be directly on, fixed to, connected to, engaged with or contacting the other element, or intervening elements may be present.

Claims

1. A limit vibration damping component, a pin shaft part for tightly jointing a first fixing piece and a second fixing piece, a vibration damping component is arranged between the first fixing piece and the second fixing piece, the vibration damping component forms flexible connection between the first fixing piece and the second fixing piece to restrain vibration transmission, the limit vibration damping component is characterized in that,

2. A spacing vibration damping component as claimed in claim 1, wherein the vibration damping member is provided with a recess at the outer periphery thereof, the recess being wrapped around the inner periphery of the first through hole to form a buffer layer on the first fixing member for the flexible connection.

3. A spacing vibration damping component as claimed in claim 2 wherein said recess is in the form of a wave or arc recess.

4. A spacing vibration damping element according to claim 1, wherein the other end of the pin portion has a large head portion for applying a clamping force to the first fixing member.

5. A spacing vibration damping component according to claim 1, wherein the second section and the second through hole are provided with screw thread structures for mutual fastening.

6. The limiting vibration reduction component is characterized in that a limiting sleeve synchronously inserted into a through hole of the vibration reduction component is sleeved on the pin shaft part, and the lower part of the limiting sleeve is provided with an extending part which extends outwards along the circumferential direction and is abutted against the end part of the vibration reduction component so as to limit the limiting compression amount of the vibration reduction component in the axial direction of the limiting sleeve.

7. The spacing vibration reducing component of claim 6, wherein the upper portion of the spacing sleeve has a protrusion protruding outwardly in the circumferential direction, the protrusion having an outer diameter greater than an inner diameter of the through hole of the vibration reducing member, and wherein the protrusion is in interference fit with the vibration reducing through hole when the spacing sleeve is inserted into the through hole of the vibration reducing member.

8. A spacing vibration damping component as claimed in claim 7 wherein the projection is in the form of an arcuate or conical projection.

9. The spacing vibration reduction component of claim 6, wherein the vibration reduction member is provided with a recess on the outer periphery thereof, the recess being wrapped around the inner periphery of the second through hole of the second fixing member to form a buffer layer on the second fixing member, thereby realizing the flexible connection.

10. A spacing vibration damping component as claimed in claim 9 wherein said recess is in the form of a wave or arc recess.

11. A spacing vibration reducing component as defined in claim 9, wherein a nut is secured to one end of said pin portion, said nut providing support for the side portion of said extension portion, said stop collar upper portion cooperating with said first securing member to effect said axial limiting of the limiting compression of the vibration reducing member, a large head portion being provided at the other end of the pin portion to provide said tightening engagement force to the first securing member.

12. The spacing vibration reduction component of claim 6, wherein the vibration reduction member is provided with a recess on the outer periphery thereof, the recess being wrapped around the inner periphery of the first through hole of the first fixing member to form a buffer layer on the first fixing member, thereby realizing the flexible connection.

13. A spacing vibration damping component as claimed in claim 12 wherein said recess is in the form of a wave or arc recess.

14. A spacing vibration reducing component as defined in claim 12, wherein a nut is secured to one end of said pin portion, said nut being in abutment with said second securing member to limit said limiting sleeve upper portion to limit the amount of compression of the vibration reducing member in said axial direction, a large head portion being provided at the other end of the pin portion to provide said tightening engagement force to said extension portion.

15. A car seat comprising a limit vibration damping member according to any one of claims 1 to 14.