CN110775015A - Safety belt retractor - Google Patents
Safety belt retractor Download PDFInfo
- Publication number
- CN110775015A CN110775015A CN201911075128.3A CN201911075128A CN110775015A CN 110775015 A CN110775015 A CN 110775015A CN 201911075128 A CN201911075128 A CN 201911075128A CN 110775015 A CN110775015 A CN 110775015A
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- China
- Prior art keywords
- rotate
- disc
- locking piece
- locking
- steel ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- B60R22/40—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention discloses a safety belt retractor which comprises a mounting seat, a steel ball, a locking piece, a transmission assembly, a reset piece and a seat body, wherein the locking piece is provided with an initial position abutting against the steel ball and a locking position which is driven by the steel ball to rotate towards a winding disc so as to lock the winding disc to rotate; the transmission assembly is provided with a head end and a tail end for force transmission, the head end and the furling disc synchronously rotate, and the tail end is positioned between the locking piece and the furling disc and is used for driving the tail end to rotate in a direction far away from the locking piece when the furling disc rotates; one end of the reset piece is connected with the base body, and the other end of the reset piece is connected with the tail end. Through the setting of locking piece, transmission assembly and the piece that resets, make locking piece butt under the safety belt non-user state the steel ball to make the steel ball not have the motion, eliminate the abnormal sound. Compared with the prior art, the abnormal sound problem of the safety belt retractor can be solved.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a safety belt retractor.
Background
The safety belt is a main functional component for realizing the passive safety of the vehicle, wherein the safety belt with the emergency locking type retractor has the most use condition, and the emergency locking type retractor has an angle locking function according to the regulation requirement, namely the retractor inclines to any direction from a mounting position by more than a certain angle, and the retractor must be capable of locking; at present, the angle locking function of the safety belt is realized by arranging steel balls in a retractor, and triggering a locking device by the steel balls due to gravity movement after the angle is changed; therefore, the steel ball needs to be in a movable state, and the steel ball is easy to vibrate to generate abnormal sound when the whole vehicle runs on a bumpy road.
Disclosure of Invention
The invention mainly aims to provide a safety belt retractor and aims to solve the problem of abnormal sound of the safety belt retractor.
In order to achieve the above object, the present invention provides a seatbelt retractor, including a winding plate, further including:
a mounting seat located at one side of the winding disc and provided with an opening facing the winding disc;
the steel ball is arranged in the mounting seat and used for moving towards the opening when the acceleration in the front-back direction of the vehicle exceeds a preset value;
the locking piece is rotatably arranged at the opening and is provided with an initial position abutting against the steel ball and a locking position which is driven by the steel ball to rotate towards the coiling disc so as to lock the coiling disc to rotate;
the transmission assembly is provided with a head end and a tail end for force transmission, the head end and the furling disc synchronously rotate, and the tail end is positioned between the locking piece and the furling disc and is used for driving the tail end to rotate in a direction far away from the locking piece when the furling disc rotates; and the number of the first and second groups,
reset piece and pedestal, reset the one end of piece with the pedestal is connected, and the other end connect in the tail end for order about the tail end promotes the locking piece extremely initial position.
Optionally, the reset member is a return spring.
Optionally, the torque of the return spring is set to be 0.09-0.12N-m.
Optionally, the transmission assembly comprises:
the rotating body is connected with the transmission gear and synchronously rotates with the transmission gear, and comprises a rotating body main body and a pawl, wherein the pawl protrudes outwards from the rotating body main body;
a first lever having a first force receiving end and a first driven end, the first force receiving end being disposed downstream in a rotational direction of the pawl to drive the first driven end to rotate in a direction away from the transmission gear when the first force receiving end is driven to rotate by the pawl; and the number of the first and second groups,
and the second lever is provided with a second force-bearing end and a second driven end, the second driven end is positioned between the locking piece 4 and the winding disc 1, and the second force-bearing end is arranged at the downstream of the rotation direction of the first driven end so as to drive the second driven end to rotate towards the direction far away from the locking piece when the second force-bearing end is linked with the first driven end.
Optionally, the safety belt retractor further comprises a transmission gear, the transmission gear is coaxially arranged with the retraction disc and is provided with a plurality of concave parts;
the locking piece is provided with a free end and an installation end, the free end comprises a locking portion which extends towards the transmission gear and is matched with the concave portion, the installation end is rotatably installed on the opening, and when the locking piece is located at the locking position, the locking portion is matched with the concave portion to lock the transmission gear to rotate.
Optionally, the rotating body is a gear and is arranged coaxially with the transmission gear.
Optionally, the rotating body is a gear and is engaged with the transmission gear.
In the technical scheme, the invention provides a safety belt retractor which comprises a locking piece, a transmission assembly, a reset piece and a base body. The transmission assembly is provided with a head end and a tail end of force transmission, the head end and the furling disc synchronously rotate, and the tail end is located between the locking piece and the furling disc and used for driving the tail end to rotate in the direction far away from the locking piece when the furling disc rotates. One end of the reset piece is connected with the base body, and the other end of the reset piece is connected with the tail end. The reset piece drives the tail end to press the locking piece to the initial position, so that the locking piece is abutted against the steel ball under the non-use state of the safety belt, the steel ball does not move, and abnormal sound is eliminated; when the safety belt is drawn out, the head end and the winding disc rotate synchronously, so that the tail end is driven to rotate in the direction far away from the locking piece, the steel ball is released from the pressing of the tail end and recovers free movement, and when the acceleration of the steel ball in the front-rear direction of the vehicle exceeds a preset value, the steel ball moves towards the opening of the mounting seat towards the winding disc, so that the locking piece is driven to rotate towards the winding disc to lock the winding disc, and the locking of the safety belt is realized. Compared with the prior art, the safety belt retractor has the advantages that the emergency locking function is realized, and abnormal sound caused by the steel ball can be eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Figure 1 is a schematic view of an embodiment of a seat belt retractor according to the present invention;
figure 2 is a schematic view of the seat belt retractor provided in figure 1 in a non-use condition;
fig. 3 is a schematic view of a seat belt of the seat belt retractor provided in fig. 1 in a locked state.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 100 | |
521 | First force-bearing end | |
| 1 | |
522 | First driven |
|
| 2 | |
53 | |
|
| 3 | |
531 | Second force-bearing |
|
| 4 | |
532 | Second driven |
|
| 41 | |
6 | Reset piece | |
| 5 | |
| Return spring | |
| 51 | |
7 | |
|
| 52 | |
8 | Transmission gear |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The angle locking function of the existing safety belt retractor is realized by arranging steel balls inside, and after the angle is changed, the steel balls trigger a locking device due to gravity movement; therefore, the steel ball needs to be in a movable state, and the steel ball is easy to vibrate to generate abnormal sound when the whole vehicle runs on a bumpy road surface. Referring to fig. 1 to 3, the seatbelt retractor 100 may not only lock a seatbelt in an emergency, but also eliminate abnormal noise, thereby improving comfort of a user.
The safety belt retractor 100 provided by the invention comprises a winding disc 1, and the safety belt retractor 100 further comprises a mounting seat 2, a steel ball 3, a locking piece 4, a transmission assembly 5, a resetting piece 6 and a seat body 7, wherein the mounting seat 2 is positioned on one side of the winding disc 1 and is provided with an opening facing the winding disc 1; the steel ball 3 is arranged in the mounting seat 2 and used for moving towards the opening when the acceleration in the front-back direction of the vehicle exceeds a preset value; the locking piece 4 is rotatably arranged at the opening, and the locking piece 4 is provided with an initial position abutting against the steel ball 3 and a locking position which is driven by the steel ball 3 to rotate towards the coiling disc 1 so as to lock the coiling disc 1 to rotate; the transmission assembly 5 has a head end and a tail end for force transmission, the head end rotates synchronously with the reeling disc 1, the tail end is located between the locking member 4 and the reeling disc 1, and when the reeling disc 1 rotates, the head end drives the tail end to rotate in a direction away from the locking member 4; one end of the reset piece 6 is connected with the base body 7, and the other end is connected with the tail end to drive the tail end to push the locking piece 4 to the initial position.
In the seatbelt retractor 100 according to the present invention, when the seatbelt is not in use, as shown in fig. 2, one end of the restoring member 6 is connected to the seat body 7, and the other end is connected to the rear end, and the restoring member 6 restrains the rear end to press the locking member 4, so that the steel ball 3 does not move, and abnormal noise is eliminated. As shown in fig. 3, when the safety belt is drawn out, the take-up disc 1 rotates, the take-up disc 1 drives the head end of the transmission assembly 5 to rotate, then the head end drives the tail end to rotate in a direction away from the locking member 4, the steel ball 3 moves freely, and when the acceleration of the steel ball 3 in the front-rear direction of the vehicle exceeds a preset value, the steel ball 3 moves towards the opening of the take-up disc 1 of the mounting seat 2, so that the locking member 4 is driven to rotate towards the take-up disc 1 to lock the take-up disc 1, and the safety belt is locked.
Further, the reset member 6 is a reset spring 6 a. One end of the return spring 6a is connected with the seat body 7, and the other end is connected with the tail end. When the safety belt is not in use, the return spring 6a presses the locking member 4 by restricting the movement of the tail end, so that the steel ball 3 does not move. When the safety belt is drawn out outwards, the winding disc 1 rotates, the winding disc 1 drives the head end of the transmission assembly 5 to rotate, then the head end drives the tail end to rotate towards the direction far away from the locking piece 4, the steel ball 3 moves freely, and when the acceleration of the steel ball 3 in the front-rear direction of the vehicle exceeds a preset value, the steel ball 3 moves towards the opening of the mounting seat 2 towards the winding disc 1, so that the locking piece 4 is driven towards the winding disc 1 to rotate, and the locking piece 4 is located at the locking position for locking the rotation of the winding disc 1. Thus, the rear end overcomes the pressing force of the return spring 6a when the safety belt is locked in an emergency. After the emergency locking, the belt is rewound and the pressing force of the return spring 6a can make the tail end push the locking member 4 to the initial position, so that the belt is restored to the unused state. Wherein the return is mainly performed by the pressing force of the return spring 6 a.
In particular toThe torque of the return spring 6a is set to be 0.09-0.12 N.m. In the application, the weight of the steel ball 3 is about 60-80 g, and the acceleration of the vehicle body is generally not more than 1m/s in the normal running process of the vehicle
2Therefore, the impact force of the steel ball 3 is generally not more than 0.06-0.08N. The torque of the return spring 6a is designed according to a force value of 1.5 times, so that the torque of the return spring 6a is set to be 0.09-0.12 N.m. The preset acceleration value of the steel ball 3 is 3m/s
2When the acceleration of the steel ball 3 is 3m/s
2When the impact force of the steel ball 3 is 0.18N-0.24N, the steel ball 3 moves towards the opening of the winding disc 1 to drive the locking piece 4 to rotate towards the winding disc 1, so that the locking piece 4 is located at a locking position for locking the rotation of the winding disc 1.
Further, the seatbelt retractor 100 further includes a transmission gear 8, the transmission gear 8 being disposed coaxially with the take-up plate 1, having a plurality of concave portions; the lock member 4 has a free end including a locking portion 41 extending toward the transmission gear 8 and fitting into the recess, and a mounting end rotatably mounted to the opening, and when the lock member 4 is in the locking position, the locking portion 41 cooperates with the recess to lock the transmission gear 8 to rotate. As shown in fig. 3, the transmission gear 8 rotates synchronously with the take-up disc 1, a plurality of convex parts are arranged on the periphery of the transmission gear 8, and concave parts are formed between adjacent convex parts; the mounting end of the lock member 4 is rotatably mounted to the opening so that the lock member 4 can be rotated to a lock position toward the transmission gear 8 or rotated to an initial position away from the transmission gear 8; the lock portion 41 is a tip end projection of the lock member 4 extending toward the transmission gear 8. When the steel ball 3 moves freely and the acceleration of the steel ball 3 in the front-rear direction of the vehicle exceeds a preset value, the steel ball 3 moves towards the opening of the winding disc 1 towards the mounting seat 2, so that the locking piece 4 is driven to rotate towards the winding disc 1, and at the moment, the locking part 41 is matched with the concave part of the transmission gear 8 to lock the transmission gear 8 to rotate, so that the winding disc 1 is locked.
The specific arrangement of the transmission assembly 5 is not limited in the present invention, as long as the transmission assembly has a head end and a tail end for transmitting force, the head end and the take-up disk 1 rotate synchronously, and the tail end is located between the locking member 4 and the take-up disk 1, so that when the take-up disk 1 rotates, the head end drives the tail end to rotate in a direction away from the locking member 4. Also as in this embodiment, the transmission assembly 5 includes a rotating body 51, a first lever 52 and a second lever 53. The rotating body 51 is connected to the winding disc 1 and rotates synchronously with the winding disc 1, and the rotating body 51 includes a rotating body main body and pawls protruding outward from the rotating body main body; the first lever 52 has a first force-bearing end 521 and a first driven end 522, the first force-bearing end 521 is arranged downstream of the pawl rotation direction to drive the first driven end 522 to rotate away from the take-up disc 1 when the first force-bearing end 521 is driven to rotate by the pawl; the second lever 53 has a second force receiving end 531 and a second driven end 532, the second driven end 532 is located between the latch member 4 and the take-up reel 1, the second force receiving end 531 is arranged downstream of the first driven end 522 in the rotation direction, so that when the second force receiving end 531 and the first driven end 522 are interlocked, the second driven end 532 is driven to rotate away from the latch member 4. Therefore, in the embodiment of the present invention, the leading end is the rotating body 51, and the trailing end is the second driven end 532.
Specifically, when the safety belt is withdrawn, the winding disc 1 rotates clockwise (in the direction indicated by the arrow in fig. 3), the rotating body 51 is driven to rotate, the pawl of the rotating body 51 drives the first force-bearing end 521 to rotate counterclockwise, so that the first driven end 522 is driven to rotate in the direction away from the winding disc 1, then the first driven end 522 drives the second force-bearing end 531 to rotate in the direction away from the winding disc 1, so that the second driven end 532 is driven to rotate in the direction away from the locking member 4, the steel ball 3 is not pressed by the locking member 4 to return to the free movement, when the acceleration of the steel ball 3 in the vehicle front-rear direction exceeds a preset value, the steel ball 3 moves towards the locking member 4, so that the locking member 4 rotates towards the winding disc 1 until the locking position is reached, and at this time, the locking portion 41 cooperates with the concave portion of the transmission gear 8 to lock the rotation of the transmission gear 8, so that the winding disc 1 is locked. The safety belt returns to the unused state after emergency locking, that is, the pressing force of the return spring 6a drives the second driven end 532, so as to press the locking member 4 again, and then the steel ball 3 does not move, and drives the second stressed end 531, then drives the first driven end 522, and finally drives the first stressed end 521 to return to the original position, where the driving principle of the transmission assembly 5 is similar to that of the transmission assembly 5 during emergency locking, and details are not described here.
In order to be able to return to the non-use state after the emergency locking of the safety belt, the transmission gear 8 and the rotary body 51 are arranged to rotate synchronously. Specifically, the transmission gear 8 is a gear, and the synchronous rotation of the transmission gear 8 and the rotating body 51 can be realized by coaxial rotation or by meshing of gears. The embodiment of the invention is realized by coaxial rotation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A seat belt retractor comprising a take-up reel, the seat belt retractor further comprising:
a mounting seat located at one side of the winding disc and provided with an opening facing the winding disc;
the steel ball is arranged in the mounting seat and used for moving towards the opening when the acceleration in the front-back direction of the vehicle exceeds a preset value;
the locking piece is rotatably arranged at the opening and is provided with an initial position abutting against the steel ball and a locking position which is driven by the steel ball to rotate towards the coiling disc so as to lock the coiling disc to rotate;
the transmission assembly is provided with a head end and a tail end for force transmission, the head end and the furling disc synchronously rotate, and the tail end is positioned between the locking piece and the furling disc and is used for driving the tail end to rotate in a direction far away from the locking piece when the furling disc rotates; and the number of the first and second groups,
reset piece and pedestal, reset the one end of piece with the pedestal is connected, and the other end connect in the tail end for order about the tail end promotes the locking piece extremely initial position.
2. The seatbelt retractor according to claim 1, wherein the return member is a return spring.
3. The seatbelt retractor according to claim 2, wherein a torque of the return spring is set to 0.09 to 0.12N · m.
4. The seatbelt retractor according to claim 1, wherein the transmission assembly includes:
the rotating body is connected with the furling disc and synchronously rotates with the furling disc, and comprises a rotating body main body and a pawl, and the pawl is outwards protruded from the rotating body main body;
a first lever having a first force receiving end and a first driven end, the first force receiving end being disposed downstream in a rotational direction of the pawl to drive the first driven end to rotate in a direction away from the take-up reel when the first force receiving end is driven to rotate by the pawl; and the number of the first and second groups,
and the second lever is provided with a second force bearing end and a second driven end, the second driven end is positioned between the locking piece and the furling disc, and the second force bearing end is arranged at the downstream of the rotation direction of the first driven end so as to drive the second driven end to rotate towards the direction far away from the locking piece when the second force bearing end is linked with the first driven end.
5. The seatbelt retractor according to claim 4, further comprising a transmission gear coaxially disposed with the take-up plate, having a plurality of concave portions;
the locking piece is provided with a free end and an installation end, the free end comprises a locking portion which extends towards the transmission gear and is matched with the concave portion, the installation end is rotatably installed on the opening, and when the locking piece is located at the locking position, the locking portion is matched with the concave portion to lock the transmission gear to rotate.
6. The seatbelt retractor according to claim 5, wherein the rotating body is a gear, and is disposed coaxially with the transmission gear.
7. The seatbelt retractor according to claim 5, wherein the rotating body is a gear, and is disposed to mesh with the transmission gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075128.3A CN110775015A (en) | 2019-11-05 | 2019-11-05 | Safety belt retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075128.3A CN110775015A (en) | 2019-11-05 | 2019-11-05 | Safety belt retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110775015A true CN110775015A (en) | 2020-02-11 |
Family
ID=69389394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911075128.3A Pending CN110775015A (en) | 2019-11-05 | 2019-11-05 | Safety belt retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110775015A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006037544A1 (en) * | 2006-08-10 | 2008-02-14 | Trw Automotive Gmbh | Belt roller with vehicle-sensitive blocking system, includes ganged control lever coupled via friction coupling to belt coil |
| CN107187413A (en) * | 2016-03-15 | 2017-09-22 | 福特全球技术公司 | Winding up apparatus for safety belt assembly |
| CN110027502A (en) * | 2019-04-30 | 2019-07-19 | 延锋汽车智能安全系统有限责任公司 | Seat belt retractor and seat belt apparatus for motor vehicle |
-
2019
- 2019-11-05 CN CN201911075128.3A patent/CN110775015A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006037544A1 (en) * | 2006-08-10 | 2008-02-14 | Trw Automotive Gmbh | Belt roller with vehicle-sensitive blocking system, includes ganged control lever coupled via friction coupling to belt coil |
| CN107187413A (en) * | 2016-03-15 | 2017-09-22 | 福特全球技术公司 | Winding up apparatus for safety belt assembly |
| CN110027502A (en) * | 2019-04-30 | 2019-07-19 | 延锋汽车智能安全系统有限责任公司 | Seat belt retractor and seat belt apparatus for motor vehicle |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200211 |