CN112622810B - Noise reduction coiler - Google Patents
Noise reduction coiler Download PDFInfo
- Publication number
- CN112622810B CN112622810B CN202011534755.1A CN202011534755A CN112622810B CN 112622810 B CN112622810 B CN 112622810B CN 202011534755 A CN202011534755 A CN 202011534755A CN 112622810 B CN112622810 B CN 112622810B
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- vehicle
- push rod
- straight push
- coil spring
- noise reduction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
Abstract
The invention discloses a noise reduction retractor and relates to the field of vehicle safety. One embodiment of the noise reduction retractor comprises: the automatic winding device comprises a coil spring, a winding drum, a frame, a housing and a vehicle sensing device, wherein the winding drum is arranged in the frame, the coil spring and the housing are respectively arranged at two ends of the frame, and the winding drum is pivotally arranged on the coil spring and the housing; the retractor further comprises a vehicle sensing inhibiting device, and the belt winding drum has the tendency of rotating or revolving under the action of the winding force of the coil spring and further pushes the vehicle sensing inhibiting device to abut against the vehicle sensing device. According to the embodiment, the function of the vehicle sensing device can be cancelled when the vehicle normally runs, so that the abnormal sound emitted by relevant parts of the vehicle device is eliminated, the experience of passengers is improved, and the safety belt locking function of the vehicle sensing device is quickly recovered when the vehicle meets an emergency so as to protect the passengers.
Description
Technical Field
The invention relates to the field of vehicle safety, in particular to a noise reduction retractor.
Background
In a seat belt apparatus for a vehicle, there is a vehicle-sensing device (may also be referred to as a vehicle-sensing locking device) for locking a seat belt to protect an occupant when the vehicle encounters an emergency such as a collision. However, the vehicle-sensing device generates an abnormal sound when the vehicle is normally running. For example, one structure of the vehicle sensing device is a structure having a ball, a seat, and the like, in which the ball moves due to inertia when the vehicle encounters an emergency, thereby triggering a locking portion such as a pawl to lock the seat belt; when the vehicle normally runs, the ball body can freely move in the base and make abnormal sound, so that the experience of passengers is reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a noise reduction retractor, which is capable of canceling a function of a vehicle sensing device when a vehicle is running normally, further removing abnormal noise generated by related components of the vehicle device to improve occupant experience, and quickly restoring a seat belt locking function of the vehicle sensing device when the vehicle encounters an emergency to protect the occupant.
To achieve the above object, the present invention provides a noise reduction retractor.
The noise reduction retractor comprises a coil spring, a belt winding drum, a frame, a housing and a vehicle sensing device, wherein the belt winding drum is arranged in the frame, the coil spring and the housing are respectively arranged at two ends of the frame, and the belt winding drum is pivotally arranged on the coil spring and the housing; the noise reduction retractor further comprises a vehicle sensing inhibiting device, the belt winding drum rotates under the effect of the winding force of the coil spring, and the vehicle sensing inhibiting device is further pushed to abut against the vehicle sensing device.
Optionally, the vehicle sensing device includes a base, a sensing ball and a vehicle sensing actuator, the sensing ball is disposed between the base and the vehicle sensing actuator, and the tape winding drum rotates under the winding force of the coil spring to further push the vehicle sensing suppressing device to abut against the vehicle sensing actuator.
Optionally, a winding core capable of pivoting is arranged on the housing, and is connected with the tape winding drum and synchronously rotates, and the vehicle feeling suppression device includes: the friction wheel is fixedly connected with the winding core and synchronously rotates; one end of the straight push rod can be abutted with the vehicle sensing actuating mechanism, the middle part of the straight push rod is attached to the edge of the friction wheel, and the other end of the straight push rod can be abutted with a lap joint part arranged on the housing; and the biasing device is arranged on the housing, so that the middle part of the straight push rod is tightly attached to the edge of the friction wheel.
Optionally, the housing is further provided with a guide seat, the guide seat is provided with a guide hole, the middle of the straight push rod is attached to the edge of the friction wheel, and one end of the straight push rod penetrates through the guide hole and then can be abutted to the vehicle sensing actuating mechanism.
Optionally, still be equipped with reset spring on the guide holder, reset spring with straight push rod butt, and follow all the time and make straight push rod keep away from car feel actuating mechanism's direction application of force.
Optionally, the retraction force of the coil spring is greater than the elastic force of the return spring.
Optionally, the biasing device is an L-shaped metal reed, one end of the biasing device is clamped on the overlapping part, the tail end of the biasing device is bent along the outline of the overlapping part, and the other end of the biasing device is elastically abutted against the middle part of the straight push rod, so that the middle part of the straight push rod is tightly attached to the edge of the friction wheel.
Optionally, a boss is arranged on the housing and located above the overlapping portion, an installation groove is formed between the boss and the overlapping portion, one end of the metal reed is clamped in the installation groove, and the tail end of the metal reed bends along the contour of the boss or the overlapping portion.
Optionally, when the vehicle acceleration is between 0.3g and 0.7g, the sensing ball pushes the vehicle sensing actuating mechanism upwards under the inertia effect to overcome the retraction force of the coil spring together with the return spring, and the vehicle sensing device starts.
Optionally, the friction wheel is an eccentric wheel or a cam structure with different contour curvatures.
According to the technical scheme of the invention, the embodiment of the invention has the following advantages or beneficial effects: the noise reduction retractor of the embodiment of the invention can comprise a vehicle feel inhibiting device, the vehicle feel inhibiting device can comprise a friction wheel, a straight push rod, a biasing device and other components, when a vehicle normally runs, the winding core and the friction wheel rotate in a certain direction (or have a tendency of rotating in the direction) under the action of the coil spring, so that friction force is applied to the straight push rod in friction fit with the friction wheel to enable the straight push rod to move downwards, the straight push rod is enabled to press a vehicle feel executing mechanism of the vehicle feel device to enable the vehicle feel device to be in a non-working state, and abnormal sound emitted by the vehicle feel device is eliminated. When the vehicle meets an emergency, the safety belt worn by a passenger is pulled out, so that the friction wheel rotates in the opposite direction, the straight push rod is further driven to ascend and be away from the vehicle sensing actuating mechanism, and the vehicle sensing device is enabled to recover the working state to protect the passenger.
Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic exterior view of a noise reducing retractor in an embodiment of the present invention;
FIG. 2 is an exploded view of a noise reducing retractor in an embodiment of the present invention;
FIG. 3 is an exploded view of the feel suppression apparatus according to the embodiment of the present invention;
FIG. 4 is a schematic view of a normal vehicle feel suppression apparatus in an embodiment of the present invention;
FIG. 5 is a schematic view of a vehicular feel suppression apparatus in an emergency in an embodiment of the present invention;
description of reference numerals:
| 10 | |
35 | |
| 11 | |
36 | |
| 12 | |
311 | |
| 20 | |
312 | Lap |
| 30 | Vehicle |
313 | |
| 31 | |
371 | |
| 32 | |
372 | Induction ball |
| 33 | |
373 | Vehicle |
| 34 | Straight push rod |
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
It should be noted that "set", "mounted" and "connected" in the following description may refer to a fixed fit between two objects, and may also refer to a non-fixed fit (e.g., a sliding connection); may represent a removable fit (e.g., a bolt and nut connection) or may represent a non-removable fit (e.g., a weld); the term "directly" or "indirectly" means a combination of the two or more. Furthermore, the embodiments of the present invention and the technical features in the embodiments may be combined with each other without conflict.
FIG. 1 is a schematic exterior view of a noise reducing retractor in an embodiment of the present invention; FIG. 2 is an exploded view of a noise reducing retractor in an embodiment of the present invention; FIG. 3 is an exploded view of the feel suppression apparatus according to the embodiment of the present invention; FIG. 4 is a schematic view of the vehicle feel suppression apparatus in a normal state (i.e., normal running of the vehicle) in the embodiment of the present invention; fig. 5 is a schematic view of the vehicular sensation suppressing apparatus in an emergency (for example, when the vehicle encounters an impact, acceleration sharply increases in a short time) according to the embodiment of the present invention, as shown in fig. 1 to 5.
The noise reduction retractor 10 according to an embodiment of the present invention may include a coil spring 20, a spool 11, a frame 12, a cover 31, and a vehicle sensing device (i.e., a vehicle sensing locking device), wherein the spool 11 is disposed in the frame 12, the coil spring 20 and the cover 31 are respectively disposed at both ends of the frame 12, and the spool 11 is pivotably mounted on the coil spring 20 and the cover 31.
In particular, the noise reduction retractor 10 further comprises a vehicle feel suppressing device 30, wherein the belt winding drum rotates or has a tendency to rotate under the retracting force of the coil spring 20, and the vehicle feel suppressing device 30 is further pushed to abut against the vehicle feel device, so that abnormal sound generated by the vehicle feel device is eliminated.
In a specific application, the vehicle feel suppression device 30 according to the embodiment of the present invention may be installed on one side of the noise reduction retractor 10, and is configured to cancel the vehicle feel device function when the vehicle is running normally (at this time, the passenger may wear the seat belt or may not wear the seat belt), and further remove the abnormal sound generated by the relevant components of the vehicle feel device to improve the passenger experience, and quickly recover the seat belt locking function of the vehicle feel device to protect the passenger when the vehicle encounters an emergency. It is understood that the vehicle sensing device is used to lock the seat belt when the acceleration of the vehicle is greater than a threshold value or within a certain range, and the locking function of the vehicle sensing device is determined to some extent by a sensing ball 372 or other components that sense the acceleration of the vehicle.
Preferably, the cover 31 is provided with a pivotable winding core 32, and the winding core 32 is connected with the tape winding drum 11 and rotates synchronously. When the wrap spring 20 applies a winding force to the take-up reel 11, the winding force is transmitted to the winding core 32. The vehicle feeling suppression device 30 is connected to the winding core 32, and can push the vehicle feeling actuator 373 of the vehicle feeling device under the winding force of the coil spring 32 to put the vehicle feeling device in a non-operating state.
In practical applications, the vehicle feel suppression device may be designed to have different structures to achieve the above functions. Preferably, the feel suppressing device 30 may include a friction wheel 33, a straight push rod 34, and a biasing device 35. Specifically, the friction wheel may be an eccentric wheel or a cam structure with different profile curvatures, and the friction wheel 33 is fixedly connected with the winding core 32 and rotates synchronously; one end of the straight push rod 34 can be abutted with a vehicle sensing actuator 373 in the vehicle sensing device, the middle part of the straight push rod is attached to the edge of the friction wheel 33 to keep enough friction force, and the other end of the straight push rod can be abutted with a lap joint part 312 arranged on the cover shell 31; the biasing means causes the middle of the straight push rod 34 to abut against the friction wheel 33. When the friction wheel 33 rotates, the straight push rod 34 can move linearly in the up-down direction under the action of the friction force, and in the process that the straight push rod 34 moves downwards, the vehicle sensing actuator 373 can be pushed to enable the vehicle sensing device to be in a non-working state.
In one embodiment, the vehicle sensing device comprises a base 371, a sensing ball 372 and a vehicle sensing actuator 373, wherein the sensing ball 372 is disposed between the base 371 and the vehicle sensing actuator 373 for sensing acceleration of the vehicle and triggering the associated vehicle sensing actuator 373, thereby implementing a seat belt locking function of the vehicle sensing device. The take-up drum 11 further pushes the vehicle feeling suppression device 30 against the vehicle feeling actuator 373 in response to the wind-up force of the wind-up spring 20 or a tendency of the wind-up force to rotate.
The vehicle feel actuator 373 has two states, a pressed state and a sprung state: in the pressed state, the lower surface of the vehicle-sensing actuator 373 contacts the sensing ball 372, so that the vehicle-sensing actuator and the sensing ball 372 can be kept relatively stationary, and the vehicle-sensing device is in a non-operating state. It is understood that the above non-operating state refers to a state in which the vehicle sensing device does not lock the seat belt due to the pressing of the sensing ball 372. When the sensing ball 372 is free to move and the vehicle sensing actuator 373 is in the bounce state, the vehicle sensing device returns to the working state, that is, the vehicle sensing device can lock the seat belt when the acceleration is large. In the embodiment of the present invention, the vehicle feel actuator 373 can be switched between two states by moving the straight push rod 34 up and down.
Preferably, the biasing device 35 is disposed on the housing 31, so that the middle of the straight push rod 34 is closely attached to the edge of the friction wheel 33. In one embodiment, the biasing device 35 is an L-shaped metal spring, one end of which is clamped on the overlapping part 312, the tail end of which is bent along the contour of the overlapping part 312, and the other end of which is elastically abutted against the straight push rod 34, so that the straight push rod 34 is tightly attached to the edge of the friction wheel 33.
Preferably, a boss 311 is arranged on the cover 31, the boss 311 is located above the overlapping part 312, an installation groove is formed between the boss 311 and the overlapping part 312, one end of the metal spring is clamped in the installation groove, and the tail end of the metal spring is bent along the contour of the boss 311 or the overlapping part 312. Through the design, the spring plate can be firmly arranged on the housing, and sufficient friction force between the straight push rod 34 and the edge of the friction wheel 33 is ensured.
In practical application, the housing 31 is further provided with a guide seat 313, the guide seat 313 is provided with a guide hole, the middle part of the straight push rod 34 is attached to the edge of the friction wheel 33, and the other end of the straight push rod can be abutted to the vehicle sensing actuating mechanism 373 after penetrating through the guide hole.
Preferably, the guide seat 313 is further provided with a return spring 36, and the return spring 36 is in contact with the straight push rod 34 and constantly biases the straight push rod 34 in a direction away from the vehicle feel actuator 373. The function of the return spring 36 is that when the straight push rod 34 moves upward under the action of the friction wheel 33, the return spring 36 can accelerate the movement of the straight push rod 34 by elasticity, thereby ensuring that the vehicle sensing device is quickly restored to the working state. In addition, the return spring 36 can also prevent the straight push rod 34 from falling down in an unexpected situation, for example, when the vehicle sensing device needs to be restored to the working state, the straight push rod 34 falls down due to insufficient friction force between the straight push rod 34 and the edge of the friction wheel 33. It should be noted that the retraction force of the coil spring 20 is larger than the elastic force of the return spring 36.
In the embodiment of the invention, when the vehicle acceleration is between 0.3g and 0.7g, the sensing ball 372 pushes the vehicle sensing actuating mechanism 373 upwards to overcome the retraction force of the coil spring 20 together with the return spring 36 under the inertia effect, and the vehicle sensing device is started.
The noise reduction retractor 10 of the embodiment of the invention has the following working principle: when the vehicle is running normally, no matter whether the occupant wears the seat belt or not, the winding core 32 rotates in a certain direction (counterclockwise direction in fig. 4) or tends to rotate in the direction under the winding force of the coil spring 20, so that the friction wheel 33 is driven to rotate in the direction or tends to rotate in the direction, and further, a downward friction force is applied to the straight push rod 34, so that the bottom end of the straight push rod 34 presses the vehicle sensing actuator 373 (in the process, the straight push rod 34 presses the return spring 36), and the vehicle sensing actuator 373 contacts the sensing ball 372 and keeps stationary relative to the sensing ball 372, so that the vehicle sensing device is in a non-working state, and therefore, abnormal sound generated by rolling of the sensing ball 372 is eliminated.
When the vehicle encounters an emergency (at this time, the acceleration of the vehicle meets a preset condition, for example, the acceleration range of the vehicle is between 0.3g and 0.7 g), the seat belt worn by the occupant is pulled out, so that the winding core 32 and the friction wheel 33 rotate in the opposite direction (clockwise direction in fig. 5) to drive the straight push rod 34 to rise and depart from the vehicle sensing actuating mechanism 373 to finally abut against the lap portion 312 in the housing 31 (in this process, the return spring 36 accelerates the rise of the straight push rod 34 by using the return elasticity thereof, and the vehicle sensing actuating mechanism 373 is in a sprung state after the straight push rod 34 departs from the vehicle sensing actuating mechanism 373), so that the sensing ball 372 can freely roll in the base 371, and the vehicle sensing device can be restored to the working state, thereby protecting the occupant. Therefore, the noise reduction retractor provided by the embodiment of the invention can eliminate abnormal sound emitted by the vehicle sensing device during normal running on the premise of ensuring the locking function of the vehicle sensing device during emergency.
It should be understood by those skilled in the art that the above-described embodiments described in the specification are preferred embodiments and that the components and modules referred to are not necessarily required to practice the invention.
In the technical scheme of the embodiment of the invention, the noise reduction retractor can comprise a vehicle feel inhibiting device, the vehicle feel inhibiting device can comprise a friction wheel, a straight push rod and other components, when a vehicle normally runs, the winding core and the friction wheel rotate in a certain direction (or have a tendency of rotating in the direction) under the action of the coil spring, so that friction force is applied to the straight push rod which is in friction fit with the friction wheel to enable the straight push rod to move downwards, and the straight push rod presses a vehicle feel executing mechanism of the vehicle feel device to enable the vehicle feel device to be in a non-working state, and abnormal sound emitted by the vehicle feel device is removed. When the vehicle meets an emergency, the safety belt worn by a passenger is pulled out, so that the friction wheel rotates in the opposite direction, the straight push rod is further driven to ascend and be away from the vehicle sensing actuating mechanism, and the vehicle sensing device is enabled to recover the working state to protect the passenger.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A noise reduction retractor comprises a coil spring, a belt winding drum, a frame, a cover shell and a vehicle sensing device, wherein the belt winding drum is arranged in the frame, the coil spring and the cover shell are respectively arranged at two ends of the frame, the belt winding drum is pivotally arranged on the coil spring and the cover shell, and the noise reduction retractor is characterized in that,
the noise reduction retractor also comprises a vehicle feeling inhibiting device, and the belt winding drum rotates under the action of the winding force of the coil spring to further push the vehicle feeling inhibiting device to abut against the vehicle feeling device;
the vehicle feeling device comprises a base, an induction ball and a vehicle feeling actuating mechanism, wherein the induction ball is arranged between the base and the vehicle feeling actuating mechanism, and the tape winding drum rotates under the action of the winding force of the coil spring to further push the vehicle feeling inhibiting device to abut against the vehicle feeling actuating mechanism;
be equipped with pivotable book core on the cover shell, with a winding drum is connected and synchronous revolution, car feel suppression device includes:
the friction wheel is fixedly connected with the winding core and synchronously rotates;
one end of the straight push rod can be abutted with the vehicle sensing actuating mechanism, the middle part of the straight push rod is attached to the edge of the friction wheel, and the other end of the straight push rod can be abutted with a lap joint part arranged on the housing;
and the biasing device is arranged on the housing, so that the middle part of the straight push rod is tightly attached to the edge of the friction wheel.
2. The noise reduction retractor according to claim 1, wherein the housing is further provided with a guide seat, the guide seat is provided with a guide hole, the middle part of the straight push rod is attached to the edge of the friction wheel, and one end of the straight push rod can be abutted to the vehicle sensing actuator after passing through the guide hole.
3. The noise reduction retractor according to claim 2 wherein a return spring is further provided to the guide base, the return spring abutting against the straight push rod and constantly applying a force in a direction to move the straight push rod away from the feel actuator.
4. The noise reducing retractor according to claim 3 wherein the retraction force of the coil spring is greater than the spring force of the return spring.
5. The noise reduction retractor according to any one of claims 1 to 4 wherein the biasing device is a metal spring leaf in an L shape, one end of the metal spring leaf is clamped on the overlapping portion, the tail end of the metal spring leaf is bent along the contour of the overlapping portion, and the other end of the metal spring leaf is elastically abutted against the middle portion of the straight push rod, so that the middle portion of the straight push rod is tightly attached to the edge of the friction wheel.
6. The noise reduction retractor according to claim 5, wherein a boss is provided on the housing, the boss is located above the overlapping portion, a mounting groove is formed between the boss and the overlapping portion, one end of the metal spring is clamped in the mounting groove, and the tail end of the metal spring is bent along the contour of the boss or the overlapping portion.
7. The noise reducing retractor according to claim 3 or 4 wherein the vehicle sensing device is activated when the vehicle acceleration is between 0.3g and 0.7g, the sensing ball is under inertia to push the vehicle sensing actuator upward to overcome the wind-up force of the coil spring in cooperation with the return spring.
8. A noise reducing retractor according to any of claims 1 to 4 wherein the friction wheel is an eccentric wheel or cam structure with non-uniform profile curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534755.1A CN112622810B (en) | 2020-12-22 | 2020-12-22 | Noise reduction coiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534755.1A CN112622810B (en) | 2020-12-22 | 2020-12-22 | Noise reduction coiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112622810A CN112622810A (en) | 2021-04-09 |
| CN112622810B true CN112622810B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011534755.1A Active CN112622810B (en) | 2020-12-22 | 2020-12-22 | Noise reduction coiler |
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| Country | Link |
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| CN (1) | CN112622810B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1552992B1 (en) * | 2004-01-12 | 2006-11-29 | Key Safety Systems, Inc. | Belt retractor |
| DE102008009771B4 (en) * | 2008-02-19 | 2016-08-11 | Trw Automotive Gmbh | Belt retractor for a vehicle seat belt |
| CN104024062B (en) * | 2011-12-27 | 2017-04-19 | 奥托立夫开发公司 | Self-locking belt retractor with switch-off action on its belt-strap-sensitive control system that is effective in the winding direction of the belt shaft |
| CN104742853B (en) * | 2015-03-25 | 2017-04-26 | 延锋百利得（上海）汽车安全系统有限公司 | Clutch for automobile safety belt |
| JP6566725B2 (en) * | 2015-05-28 | 2019-08-28 | Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 | Seat belt retractor and seat belt device |
| KR101841160B1 (en) * | 2016-05-25 | 2018-03-22 | 주식회사 우신세이프티시스템 | Intelligent Retractor Having Noise Removal Unit |
| CN109823303B (en) * | 2019-03-29 | 2021-03-23 | 重庆光大产业有限公司 | Coiler that makes an uproar falls in subassembly position department is felt to car |
| JP7184288B2 (en) * | 2019-05-28 | 2022-12-06 | 株式会社東海理化電機製作所 | Webbing take-up device |
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2020
- 2020-12-22 CN CN202011534755.1A patent/CN112622810B/en active Active
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| CN112622810A (en) | 2021-04-09 |
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