CN205273400U

CN205273400U - Seat belt retractor and seat belt apparatus

Info

Publication number: CN205273400U
Application number: CN201520840692.0U
Authority: CN
Inventors: 方硕果
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2015-10-28
Filing date: 2015-10-28
Publication date: 2016-06-01
Anticipated expiration: 2025-10-28

Abstract

The utility model discloses a seat belt retractor and seat belt apparatus. The safety belt coiler includes: frame, spool and the dustproof device of making an uproar that falls. The frame includes backplate and parallel first curb plate and second curb plate each other, and first curb plate and second curb plate vertical fixation are equipped with the round hole on the first curb plate on the backplate, be equipped with the ratchet hole on the second curb plate. But spool pivot ground sets up between first curb plate and second curb plate, and it is downthehole that the round hole and the ratchet of frame is inserted respectively at the spool both ends. The dustproof outside profile of device of making an uproar that falls for the annular, sets up between the side of round hole inner peripheral surface and spool is global. According to the utility model discloses a safety belt coiler has improved dustproof effect, has also reduced the noise of safety belt coiler.

Description

Webbing retractor and seat belt apparatus

Technical field

The utility model relates to vehicle field, especially relates to a kind of Webbing retractor and seat belt apparatus.

Background technology

" CN201120268077 " name is called that " dust-proof mechanism of car safety band " discloses the dust-proof mechanism of a kind of car safety band, and this dust-proof mechanism is primarily of framework, mandrel and case composition. Case is arranged on framework, and one end of mandrel is arranged on case. In the inner side of framework, the gap place between mandrel and framework, is provided with dust guard, and dust guard is arranged on framework.

The dust guard of this kind of structure formation, is arranged on inside framework by card pin, it is necessary to designs specific erecting equipment and is pressed in frame mounting hole by pin, therefore installs inconvenience. And need reserving installation hole on framework, affect frame strength. Also needing to arrange two installing card pins on dust guard, cause product structure bigger than normal, increase cost, versatility is not high. In addition, it may also be useful to time also must ensure in dust guard the gap between hole and mandrel, cause dust-proof effect to be had a greatly reduced quality.

Practical novel content

Discovery and the understanding of the following fact and problem are made by the application based on contriver:

There is dust-proof effect difference, affect the problem of induced inside device sensitivity in the Webbing retractor in correlation technique. Contriver finds through research, based on the structure basis of existing Webbing retractor, the reason of Webbing retractor induced inside device sensitivity decline is, it is inner that Webbing retractor cannot prevent dust from entering it from framework, thus affects the sensitivity of induced inside mechanism. For this reason, the utility model aims to provide a kind of Webbing retractor, and this Webbing retractor can improve dust-proof effect, to improve the provide protection to occupant.

The utility model is also to provide a kind of seat belt apparatus with above-mentioned Webbing retractor.

Webbing retractor according to the utility model embodiment, comprising: framework, spool and dust control and noise absorption device. Described framework comprises backboard and the first side plate parallel to each other and the 2nd side plate, described first side plate and described 2nd side plate and is vertically fixed on described backboard, and described first side plate is provided with circular hole, and described 2nd side plate is provided with ratchet hole. Described spool is arranged between described first side plate and described 2nd side plate pivotly, and described spool two ends are inserted in described circular hole and described ratchet hole respectively. Described dust control and noise absorption device exterior contour is annular, and described dust control and noise absorption device is arranged between described circular hole inner peripheral surface and the lateral circle surface of described spool.

Further, the outer ring surface of described dust control and noise absorption device is provided with card groove, and described card groove is fastened on described first side plate.

Further, described dust control and noise absorption device has center hole, and one end of described spool is arranged in this center hole.

Further, the width of described card groove is greater than the thickness being told the first side plate.

Further, the 2nd sidewall that the first sidewall of described card groove length in the radial direction is greater than described card groove length in the radial direction.

Further, described dust control and noise absorption device has breach, and described breach is set to be 20 �� ~ 70 �� angles with axial direction due.

According to Webbing retractor of the present utility model, by arranging dust control and noise absorption device between spool and the first side plate of framework, thus improve the dust-proof effect of Webbing retractor, avoid the accuracy of detection of the measuring element that contamination particle affects in Webbing retractor, improve the reliability of Webbing retractor, also reduce the noise of Webbing retractor.

Seat belt apparatus according to the utility model embodiment, comprises the Webbing retractor according to the utility model embodiment.

Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.

Accompanying drawing illustrates:

Fig. 1 is the exploded perspective view of the Webbing retractor according to the utility model embodiment;

Fig. 2 is that the Webbing retractor according to the utility model embodiment installs structural representation;

Fig. 3 is the cross-sectional schematic of the primary member of the Webbing retractor according to the utility model embodiment;

Fig. 4 is the structural representation of the dust control and noise absorption device according to the utility model embodiment.

Reference numeral:

Framework 100, backboard 110, first side plate 120, the 2nd side plate 130, circular hole 121, ratchet hole 131,

Spool 200,

Dust control and noise absorption device 300, center hole 310, card groove 320, card groove first sidewall 321, card groove the 2nd sidewall 322, breach 330,

Band induction installation 400,

Car induction installation 500,

End cap 600.

Embodiment

Technical problem, technical scheme and useful effect in order to make the utility model solve clearly are understood, below in conjunction with drawings and Examples, are further elaborated by the utility model. It is to be understood that specific embodiment described herein is only in order to explain the utility model, and it is not used in restriction the utility model.

Being described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the embodiment being described with reference to the drawings, it is intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " transverse direction ", " length ", " width ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " clockwise ", it is based on orientation shown in the drawings or position relation that the orientation of the instruction such as " counterclockwise " or position are closed, it is only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device referred to or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " the 2nd " are only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technology feature. Thus, be limited with " first ", the feature of " the 2nd " can express or implicit comprise at least one this feature. In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, such as, it is possible to be fixedly connected with, it is also possible to be removably connect, or integral; Can be mechanically connected, it is also possible to be electrical connection; Can be directly be connected, it is also possible to be indirectly connected by intermediary, it is possible to be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction. For the ordinary skill in the art, it is possible to understand the concrete implication of above-mentioned term in the utility model according to particular case.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact. And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature. Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or tiltedly lower section, or only represent that fisrt feature level height is less than second feature.

Below with reference to Fig. 1-4 figure, the Webbing retractor according to the utility model embodiment is described.

Webbing retractor according to the utility model embodiment, as depicted in figs. 1 and 2, comprising: framework 100, spool 200 and dust control and noise absorption device 300.

Wherein, framework 100 comprises backboard 110 and the first side plate 120 parallel to each other and the 2nd side plate 130, first side plate 120 and the 2nd side plate 130 are vertically fixed on backboard 110, and the first side plate 120 mid-way is provided with circular hole 121, and the 2nd side plate 130 mid-way is provided with ratchet hole 131. Spool 200 is arranged between the first side plate 120 and the 2nd side plate 130 pivotly, in the circular hole 121 that framework 100 is inserted at spool 200 two ends respectively and ratchet hole 131. Dust control and noise absorption device 300 exterior contour is annular, and centre has center hole 310, and dust control and noise absorption device 300 is arranged between the lateral circle surface S1 of circular hole 121 inner peripheral surface and spool 200, and the lateral circle surface of spool 200 is as shown in Figure 3.

Specifically, spool 200 is cylinder shape, is arranged in framework 100, in the insertion circular hole 121 of framework 100 and ratchet hole 131, rotates winding ribbon at ribbon coiling direction, rotates to extract ribbon out at ribbon pull-out direction. In the middle of dust control and noise absorption device 300, there is center hole 310, dust control and noise absorption device 300 profile is ring-type, outer ring surface is provided with a card groove 320, and the first side plate 120 thickness of the width ratio framework 100 of card groove 320 is big, and the width of card groove 320 refers to the distance between the first sidewall 321 and the 2nd sidewall 322. The card groove 320 of dust control and noise absorption device 300 is fastened on the first side plate 120, and one end of spool 200 is arranged in center hole 310. Like this, dust control and noise absorption device 300 is fixing to be filled between framework 100 and spool 200, can effectively prevent the particulate matter in air from entering in band induction installation 400 and car induction installation 500. Simultaneously, the material of dust control and noise absorption device 300 is engineering plastics, known this kind of material has easy processing, erosion resistance is strong, wear resistance is strong, the advantages such as weight is light, it may also be useful to the dust control and noise absorption device 300 of this kind of material can effectively prevent spool 200 from rubbing with framework 100 in rotation process and produce the friction noise of intermetallic.

In addition, the first sidewall 321 of card groove 320 length in the radial direction is greater than the 2nd sidewall 322 length in the radial direction. This kind of structure design greatly facilitates the assembling of dust control and noise absorption device 300. During assembling, the 2nd sidewall 322 first through center hole 320, is stuck in the outside of the first side plate 120, and the first sidewall 321 is by the inner side of the first side plate 120. Refer to the side away from spool 200 outside first side plate 120, inside the first side plate 120, refer to the side near spool 200. The breach 330 having one on dust control and noise absorption device 300 and be axially 20 �� ~ 70 �� of angles, this structure makes it when assembling, a certain amount of distortion can occur, the particulate matter amount of entering that the breach 330 tilted can reduce in air, thus improve the dirt exclusion capabilities of Webbing retractor, the simultaneously assembling of also convenient and safe Webbing retractor.

When Webbing retractor works, spool 200 sways with ribbon, the dust granule that ribbon brings from outside is intercepted inside the first side plate 120 by dust control and noise absorption device 300, effectively prevents dust granule from entering the seal cavity formed outside end cap 600 and the first side plate 120.

To sum up, according to the Webbing retractor of the utility model embodiment, good dustproof effect, noise is low, and assembling is simple.

Seat belt apparatus according to the utility model embodiment, comprises the Webbing retractor according to the utility model above-described embodiment.

In the description of this specification sheets, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means concrete feature, structure, material or the feature in conjunction with this embodiment or example describe and is contained at least one embodiment of the present utility model or example. In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example. And, the concrete feature of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner. In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can be carried out combining and combining by the technician of this area.

The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all any amendment, equivalent replacement and improvement etc. done within spirit of the present utility model and principle, all should be included within protection domain of the present utility model.

Claims

1. Webbing retractor, it is characterised in that, comprising:

Framework (100), comprise backboard (110) and the first side plate (120) parallel to each other and the 2nd side plate (130), described first side plate (120) and described 2nd side plate (130) are vertically fixed on described backboard (110), described first side plate (120) is provided with circular hole (121), and described 2nd side plate (130) is provided with ratchet hole (131);

Spool (200), is arranged between described first side plate (120) and described 2nd side plate (130) pivotly, and described spool (200) two ends are inserted in described circular hole (121) and described ratchet hole (131) respectively;

Dust control and noise absorption device (300), described dust control and noise absorption device (300) exterior contour is annular, and described dust control and noise absorption device (300) is positioned between the lateral circle surface of described circular hole (121) inner peripheral surface and described spool (200).

2. Webbing retractor according to claim 1, it is characterised in that, the outer ring surface of described dust control and noise absorption device (300) is provided with card groove (320), and described card groove (320) is fastened on described first side plate (120).

3. Webbing retractor according to claim 1, it is characterised in that, described dust control and noise absorption device (300) has center hole (310), and one end of described spool (200) is arranged in this center hole (310).

4. Webbing retractor according to claim 2, it is characterised in that, the 2nd sidewall (322) that first sidewall (321) of described card groove (320) length in the radial direction is greater than described card groove (320) length in the radial direction.

5. Webbing retractor according to claim 1, it is characterised in that, described dust control and noise absorption device (300) has breach (330), and described breach (330) is set to be 20 �� ~ 70 �� angles with axial direction due.

6. seat belt apparatus, it is characterised in that, comprise the Webbing retractor according to any one of claim 1-5.