CN212473038U

CN212473038U - Noise-reduction automobile sun visor framework pull rod mechanism

Info

Publication number: CN212473038U
Application number: CN202021646297.6U
Authority: CN
Inventors: 姜银台
Original assignee: Shanghai Daimay Automotive Interior Co ltd
Current assignee: Shanghai Daimay Automotive Interior Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-02-05
Anticipated expiration: 2030-08-10

Abstract

The utility model relates to a car sun visor board skeleton pull rod mechanism of making an uproar falls, install the L font support pivot in car sun visor board support, its characterized in that in the aluminium pipe, the other end including the aluminium pipe, with the sun visor board skeleton and the one end suit of aluminium pipe fixed connection's area couple axle in the aluminium pipe: the bearing rotating shaft connecting piece arranged on the bearing rotating shaft side of the sun visor skeleton is provided with a gap notch along the axial direction of the bearing rotating shaft, the bearing rotating shaft connecting piece is divided into an upper part and a lower part which are respectively fixedly connected with the sun visor skeleton, the minimum inner diameter of the bearing rotating shaft connecting piece and the outer diameter of the bearing rotating shaft are in interference fit, the hole walls on two sides of the gap notch apply an enclasping force to the bearing rotating shaft, and the purpose of reducing noise of the automobile sun visor is achieved. The utility model discloses can give an even stable pull rod power and the turning force of sunshading board, the abnormal sound that produces when reducing car sunshading board pulling process and automatic re-setting car roof has effectively promoted passenger's in the car comfort level of riding and has experienced.

Description

Noise-reduction automobile sun visor framework pull rod mechanism

Technical Field

The utility model relates to a car sun visor board especially discloses a car sun visor board skeleton pull rod mechanism of making an uproar falls.

Background

With the rapid development of the automobile industry, the quantity of automobiles kept at home and abroad is continuously increased, and the comprehensive development of the brands of various automobiles leads to more and more types of products available on the market, so that the competitiveness of products in the whole automobile enterprise is promoted from more angles, and the silence in the automobile is an important point.

As an indispensable part of automobile interior trims, automobile sun visors are increasingly required to control noise. At present, a framework of a sunshade plate on the market and an aluminum pipe are mostly fixed through clamping or riveting, a support rotating shaft is clamped with a preset clamp spring sub-assembly after being inserted into the aluminum pipe through a framework upper support rotating shaft hole, the support rotating shaft needs to slide along the axial direction of the support rotating shaft in the aluminum pipe, so the aperture of the support shaft hole needs to be larger than the diameter of the support rotating shaft, and the sunshade plate also has the problem that abnormal sounds are generated when the support rotating shaft and the framework upper support rotating shaft hole mutually collide and rub in the pulling or overturning process.

The conventional sun visor inevitably generates slight squeaking and bumping sounds during the process of automatically returning to the automobile ceiling, and the discomfort is particularly obvious on the medium-high luxury automobile models which take quiet internal space as a requirement. How to reduce the noise generated by the rotary return of the sun visor of the automobile, so that the sun visor is more suitable for the positioning of the automobile and provides a better user experience for customers becomes a research focus.

Disclosure of Invention

The utility model aims to overcome the defect that exists in the traditional design, provide a car sun visor skeleton pull rod mechanism of making an uproar falls, through the cooperation mode that changes pivot and sun visor skeleton hole, when reducing or basically eliminating the pulling of car sun visor board and the noise that the in-process of self return produced to the car roof, simultaneously the utility model discloses product manufacturing cost factor is fully considered to the mechanism, and the structure is more succinct, and the assembly is with simple and convenient, and the structure is firm, reliability and strong adaptability.

The utility model relates to a car sun visor board skeleton pull rod mechanism of making an uproar falls, including the aluminum pipe, with aluminum pipe fixed connection's sunshade plate skeleton and one end suit take the couple axle install the L font support pivot in car sun visor board support at the aluminum pipe, the other end, aluminum pipe and sun visor board skeleton rotate around the support pivot, the support pivot along aluminum pipe endwise slip, its characterized in that: the aluminum pipe in be equipped with rather than molding and internal diameter matched with jump ring subassembly, sunshade skeleton and aluminum pipe junction be U font opening, its one end is couple axle side, the other end is support pivot side, the molding and the size at both ends cooperate with the molding and the internal diameter of aluminum pipe junction respectively, it is fixed with the aluminum pipe joint to be equipped with the arch respectively at the joint position, in order to increase frictional force and joint fastness. The clamp spring sub-assembly is provided with a semi-through hole matched with the size and the shape of the end part of the support rotating shaft, after the support rotating shaft extends into the aluminum pipe from a support rotating shaft connecting piece arranged on the side of the support rotating shaft of the sun shield framework, the end part of the support rotating shaft is inserted into the semi-through hole of the clamp spring sub-assembly and keeps always in the semi-through hole during rotation, so that the position stability of the support rotating shaft when the sun shield framework and the aluminum pipe rotate is ensured. The bearing rotating shaft connecting piece arranged on the bearing rotating shaft side of the sunshade plate framework is provided with a gap notch along the axial direction of the bearing rotating shaft, the bearing rotating shaft connecting piece is divided into an upper part and a lower part which are respectively fixedly connected with the sunshade plate framework, the minimum inner diameter of the bearing rotating shaft connecting piece is in interference fit with the outer diameter of the bearing rotating shaft, and the hole walls on two sides of the gap notch exert a holding force on the bearing rotating shaft.

The end part of the support rotating shaft is designed to be in stepped clamping connection, the support rotating shaft is automatically locked with the snap spring sub-assembly, and the support rotating shaft is always kept to be tightly attached to the sunshade plate framework through the clamping force effect of the support rotating shaft connecting piece in the process of automatically returning the sunshade plate to the automobile ceiling. According to the use requirement, the size of the holding force of the support rotating shaft can be controlled by changing the minimum inner diameter size of the support rotating shaft connecting piece and the size of the gap, so that the comfortable hand feeling of the aluminum pipe and the sun shield framework when the aluminum pipe and the sun shield framework rotate around the support rotating shaft is ensured.

The aluminum pipe provides a stable axial sliding channel for the support rotating shaft, the support rotating shaft drives the clamp spring sub-assembly to slide in the aluminum pipe, the support rotating shaft connecting piece is always meshed with the support rotating shaft, the purpose is to provide a stable direction for the support rotating shaft, the uneven pull rod force caused by the force change caused by slight angle change between the support rotating shaft and the sun visor framework and the aluminum pipe due to movable clearance is avoided, and meanwhile, the support rotating shaft connecting piece provides resistance in a corresponding direction when the support rotating shaft is pulled, so that the pull rod force is moderate, is closer to a median value, and is uniform in hand feeling.

Support pivot connecting piece on the sunshading board skeleton is the reducing design that one end is big one end is little, and its breach termination with the aluminum pipe junction is the main aspects, is clearance fit with the support pivot, avoids the sunshading board skeleton to laminate the rotation difficulty that causes completely with the support pivot, its breach initiating terminal with the support pivot is interference fit, and aim at makes the sunshading board skeleton with the laminating of support pivot eliminates when the sunshading board rotates the support pivot with the noise that the collision of sunshading board skeleton sent.

The positive tolerance of the support rotating shaft is controlled to be (+ 0.1/0), the starting end of the notch is controlled to be (0/-0.1) by adopting the negative tolerance, the matched interference amount is controlled within the range of 0-0.2 mm, so that the clamping force applied to the support rotating shaft by the sun-shading plate framework through the support rotating shaft connecting piece is controlled within a reasonable range, and the support rotating shaft is ensured to be moderate in overturning force.

The clearance breach dimensional control of support pivot connecting piece is the diameter size of counter roll within the range of 0.1mm, need be according to the size adjustment of upset power, and the undersize holds the power and will correspondingly increase to hinder support pivot pivoted flexibility, the oversize then transversely holds the power not enough, will lead to rock the noise production about the support pivot.

The utility model has the advantages that: the utility model discloses set up the support pivot connecting piece of taking the clearance breach on the sunshading board skeleton, utilize the reducing support pivot connecting piece of breach formula design, it is inseparabler to make support pivot and the laminating of sunshading board skeleton, the noise problem that car sunshading board caused because of the clearance of sunshading board skeleton and support pivot in self return or pulling sunshading board in-process in traditional design has been solved, an even comfortable upset power and pull rod power are provided for the use of sunshading board, the manufacturing cost factor has still been fully considered simultaneously, the structure is more succinct, the assembly is with simple and convenient, and overall structure is firm, reliability and strong adaptability.

Drawings

Fig. 1 is an explosion structure schematic diagram of the pull rod mechanism of the framework of the sun visor of the utility model.

Fig. 2 is a front view of the structure of the sunshade frame pull rod mechanism of the utility model after assembly.

Fig. 3 is a top view of fig. 2.

FIG. 4 is a schematic sectional view taken along the line A-A of the coupling portion of the pull rod mechanism of the sunshade frame and the support pivot subassembly of FIG. 2.

Fig. 5 is an enlarged partial sectional view of the part B-B at the connecting part of the support rotating shaft in fig. 3.

Wherein: 1. an aluminum tube; 2. A support rotating shaft; 3. A sunshade plate framework; 4. The clamp spring is assembled; 5. a support rotating shaft connecting piece; 6. A hook shaft; 51. A gap; 52; the initial end of the notch; 53. The notch terminates.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

According to fig. 1~5, a car sun visor board skeleton pull rod mechanism of making an uproar falls, including aluminum pipe 1, with 1 fixed connection of aluminum pipe take the sunshading board skeleton 3 of hook axle 6 and one end suit in aluminum pipe 1, the other end installs the L font support pivot 2 in car sun visor board support, aluminum pipe 1 and sunshading board skeleton 3 rotate around support pivot 2, support pivot 2 along 1 endwise slip of aluminum pipe, its characterized in that: the aluminum pipe 1 in be equipped with rather than molding and internal diameter matched with jump ring subassembly 4, sunshading board skeleton 3 and aluminum pipe 1 junction be U font opening, its one end is couple axle side, the other end is support pivot side, the molding and the size at both ends cooperate with the molding and the internal diameter of aluminum pipe junction respectively, fixed with aluminum pipe 1 joint to be equipped with the arch respectively at the joint position, in order to increase frictional force and joint fastness. The jump ring divide assembly 4 be equipped with 2 tip sizes of support pivot and molding matched with half through-hole, support pivot 2 stretches into the aluminum pipe 1 back from support pivot connecting piece 5 that 3 support pivot sides of sunshading board skeleton set up, the tip inserts the half through-hole that the jump ring divides assembly 4 to keep always in half through-hole when rotating, in order to guarantee the position stability of support pivot 2 when sunshading board skeleton 3 and aluminum pipe 1 are rotatory. 3 support pivot connecting piece 5 that support pivot side set up of sunshading board skeleton has seted up clearance breach 51 along 2 axial of support pivot, divide into support pivot connecting piece 5 respectively with 3 fixed connection's of sunshading board skeleton upper and lower two parts, 5 minimum internal diameters of support pivot connecting piece and 2 external diameters of support pivot are interference fit, exert one by the pore wall of clearance breach 51 both sides to support pivot 2 and embrace the power tightly.

The end part of the support rotating shaft 2 is designed to be in stepped clamping connection, the clamping spring sub-assembly 4 is automatically locked with the support rotating shaft 2, and the support rotating shaft 2 is always kept to be tightly attached to the sun shield framework 3 through the clamping force effect of the support rotating shaft connecting piece 5 in the process of automatically returning the sun shield to the automobile roof. According to the use requirement, the size of the holding force on the support rotating shaft 2 can be controlled by changing the minimum inner diameter of the support rotating shaft connecting piece 5 and the size of the gap 51, so that the comfortable hand feeling of the aluminum pipe 1 and the sun shield framework 3 when rotating around the support rotating shaft 2 is ensured.

The aluminum pipe 1 provides a stable axial sliding channel for the support rotating shaft 2, the support rotating shaft 2 drives the clamp spring sub-assembly 4 to slide in the aluminum pipe 1, the support rotating shaft connecting piece 5 is always meshed with the support rotating shaft 2, the purpose is to provide a stable direction for the support rotating shaft 2, the uneven pull rod force caused by the change of force caused by the slight change of the angle between the support rotating shaft 2 and the sun shield framework 3 and the aluminum pipe 1 due to the movable gap is avoided, and meanwhile, when the support rotating shaft 2 is pulled, the support rotating shaft connecting piece 5 provides resistance in a corresponding direction, so that the pull rod force is moderate, is closer to a median value, and is uniform in hand feeling.

Support pivot connecting piece 5 on sunshading board skeleton 3 is the little reducing design of the big one end of one end, and its breach termination with aluminum pipe 1 junction is the main aspects, and is clearance fit with support pivot 2, avoids the rotation difficulty that sunshading board skeleton 3 and support pivot 2 laminated completely and cause, its breach initiating terminal 52 with support pivot 2 is interference fit, and aim at makes sunshading board skeleton 3 with the laminating of support pivot 2 eliminates when the sunshading board rotates support pivot 2 with the noise that sunshading board skeleton 3 collision sent. When the sunshading board optional position is static or the in-process of self return to car roof, support pivot 2 is in under the effect of the clearance breach 51 of support pivot connecting piece 5 all the time with breach initiating terminal 52 keeps the laminating, provides an even snap-in force for support pivot 2 for sunshading board return speed is even not stuck, avoids traditional sunshading board skeleton and support pivot to design for clearance fit and the striking and the rotation abnormal sound that lead to sending simultaneously, realizes the noise reduction effect of needs.

The positive tolerance of the support rotating shaft 2 is controlled to be (+ 0.1/0), the notch starting end 52 is controlled to be (0/-0.1) by adopting the negative tolerance, the matched interference amount is controlled within the range of 0-0.2 mm, the holding force applied to the support rotating shaft 2 by the sun-shading plate framework 3 through the support rotating shaft connecting piece 5 is controlled within a reasonable range, and the moderate overturning force of the support rotating shaft 2 is ensured.

The diameter size of the clearance gap size fulcrum shaft of support pivot connecting piece 5 within a range of +/-0.1 mm needs to be adjusted according to the size of upset power, and the undersize holds the power and will correspondingly increase to hinder 2 pivoted flexibilities of support pivot, the oversize then transversely holds the power not enough, will lead to rocking the noise production about the support pivot 2.

Claims

1. The utility model provides a car sun visor board skeleton pull rod mechanism of making an uproar falls, includes the aluminum pipe, with aluminum pipe fixed connection's sunshade plate skeleton and the L font support pivot that the one end suit was installed in car sun visor board support at the aluminum pipe, the other end, aluminum pipe and sun visor board skeleton rotate around the support pivot, the support pivot along aluminum pipe axial slip, its characterized in that: the aluminum pipe is internally provided with a clamp spring sub-assembly matched with the shape and the inner diameter of the aluminum pipe, the joint of the sunshade plate framework and the aluminum pipe is provided with a U-shaped opening, one end of the sunshade plate framework is a hook shaft side, the other end of the sunshade plate framework is a support rotating shaft side, the shape and the size of the two end parts are respectively matched with the shape and the inner diameter of the joint of the aluminum pipe and are clamped and fixed with the aluminum pipe, and bulges used for increasing friction force and clamping fastness are respectively arranged at the clamping part, the clamp spring sub-assembly is provided with a semi-through hole matched with the size and the shape of the end part of the support rotating shaft, after a support rotating shaft extends into the aluminum pipe from a support rotating shaft connecting piece arranged at the support rotating shaft side of the sunshade plate framework, the end part is inserted into the semi-through hole of the clamp spring sub-assembly, and the end part, the support rotating shaft connecting piece is divided into an upper part and a lower part which are respectively fixedly connected with the sunshade plate framework, the minimum inner diameter of the support rotating shaft connecting piece is in interference fit with the outer diameter of the support rotating shaft, and the hole walls on two sides of the gap exert holding force on the support rotating shaft.

2. The noise reduction car sun visor skeleton pull rod mechanism of claim 1, wherein: the supporting seat rotating shaft connecting piece on the sunshade plate framework is in a reducing design with one large end and one small end, the gap end of the joint of the gap and the aluminum pipe is a large end and is in clearance fit with the supporting seat rotating shaft, and the starting end of the gap is in interference fit with the supporting seat rotating shaft.

3. The noise reduction car sun visor skeleton pull rod mechanism of claim 1, wherein: the end part of the rotating shaft of the support is designed to be in stepped clamping connection, and the end part of the rotating shaft of the support are automatically locked with each other after the clamping spring sub-assembly is inserted.

4. The noise reduction car sun visor skeleton pull rod mechanism of claim 1, wherein: the aluminum pipe provides a stable axial sliding channel for the support rotating shaft, and when the support rotating shaft drives the clamp spring sub-assembly to slide in the aluminum pipe, the support rotating shaft connecting piece is always meshed with the support rotating shaft.

5. The noise reduction car sun visor skeleton pull rod mechanism of claim 2, wherein: the positive tolerance of the support rotating shaft is controlled to be + 0.1/0, the negative tolerance of the starting end of the gap is controlled to be 0/-0.1, the matched interference amount is controlled within the range of 0-0.2 mm, and the gap size of the support rotating shaft connecting piece is within the range of +/-0.1 mm of the diameter of the support shaft.