CN109624914B - Electric safety belt adjusting mechanism - Google Patents
Electric safety belt adjusting mechanism Download PDFInfo
- Publication number
- CN109624914B CN109624914B CN201910046923.3A CN201910046923A CN109624914B CN 109624914 B CN109624914 B CN 109624914B CN 201910046923 A CN201910046923 A CN 201910046923A CN 109624914 B CN109624914 B CN 109624914B
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- CN
- China
- Prior art keywords
- ratchet
- driving shaft
- pawl
- belt
- motor
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- 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.)
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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
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/4473—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using an electric retraction device
Abstract
The invention discloses an electric safety belt adjusting mechanism, which solves the problems that the existing safety belt retractor has an elastic force for always retracting a safety belt, when the pushing force of a pushing component is large, the elastic force brings a tightening sense to passengers, and when the pushing force of the pushing component is small, the elastic force can reduce the safety coefficient.
Description
Technical Field
The invention belongs to the technical field of safety belts, and particularly relates to an electric safety belt adjusting mechanism.
Background
A seat belt system in a vehicle comprises a retractor, a buckle to which the vehicle is secured, and a seat belt provided with a slidable tongue lockable in the buckle. The retractor includes a spindle on which the webbing is wound and which is rotatable in a webbing pull-in and pull-out direction, a pushing member that pushes the spindle in a webbing winding direction, and a locking device for locking the spindle in the pull-out direction when a predetermined value of a webbing pull-out speed or a predetermined value of a vehicle deceleration is exceeded, the locking device being triggered by a mechanical webbing acceleration sensor and a mechanical vehicle deceleration sensor.
Since the seatbelt retractor has an elastic force that always contracts the seatbelt, it gives a sense of contraction to the occupant when the pushing force of the pushing member is large, and it reduces the safety factor when the pushing force of the pushing member is small.
Disclosure of Invention
The invention aims to provide an electric safety belt adjusting mechanism, which is adjustable in tightness degree of a safety belt, suitable for different passenger needs and high in safety coefficient.
The technical scheme adopted for solving the technical problems is as follows:
an electric seat belt adjustment mechanism includes a drive mechanism fixed to a seat back for winding or releasing a seat belt, and a lock mechanism for restricting the drive mechanism from releasing the seat belt.
Preferably, the driving mechanism comprises a motor, a driving shaft and a first control switch, the driving shaft is horizontally arranged, the driving shaft is rotationally connected with the chair back, the motor drives the driving shaft to rotate forward or reversely, one end of the safety belt is fixed on the driving shaft, and the first control switch controls the motor to rotate or close.
Preferably, the first control switch includes a first micro switch and a second micro switch, the motor rotates forward when the first micro switch is pressed, and rotates backward when the second micro switch is pressed.
Preferably, the driving mechanism further comprises a limiting belt for limiting the rotation amount of the motor, one end of the limiting belt is connected with the driving shaft, and the other end of the limiting belt is connected with the chair back.
Preferably, the driving mechanism further comprises a limiting belt and a driven shaft, the limiting belt and the driven shaft are used for limiting the rotation amount of the motor, the driven shaft is arranged in parallel with the driving shaft, the driven shaft and the driving shaft rotate synchronously through gears, the driven shaft is rotationally connected with the chair back, one end of the limiting belt is connected with the driving shaft, and the other end of the limiting belt is connected with the driven shaft.
Preferably, the locking mechanism includes a ratchet, a pawl, and a second control switch, the ratchet is connected to the driving mechanism, the ratchet rotates forward when the seat belt is wound, the ratchet rotates backward when the seat belt is released, one end of the pawl abuts against a tooth space of the ratchet to limit the ratchet to rotate backward, and the second control switch controls the pawl to abut against or separate from the ratchet.
Preferably, the second control switch comprises a first control button and an elastic piece, the first control button is abutted to the other end of the pawl and the second micro switch, when the first control button is pressed, the pawl is separated from the ratchet wheel, the second micro switch is closed, the motor is reversed, when the first control button is released, the elastic piece drives the pawl to be abutted to the tooth space of the ratchet wheel, the second micro switch is opened, and the pawl stops reversing.
Preferably, the ratchet wheel is coaxially arranged with the driving shaft, and the ratchet wheel is fixedly connected with the driving shaft.
Preferably, the locking mechanism further comprises a ratchet box upper cover and a ratchet box lower cover, the ratchet box upper cover and the ratchet box lower cover are spliced to form a ratchet box for accommodating the ratchet, the pawl, the second control switch, the first micro switch and the second micro switch, a second through hole for the driving shaft to penetrate through is formed in the ratchet box lower cover, one end of the driving shaft penetrates through the second through hole and is fixedly connected with the ratchet, and the pawl is rotatably arranged on the ratchet box lower cover; the second micro switch is further provided with a second control button, and a third through hole for the first control button and the second control button to extend out is formed in the upper cover of the ratchet box.
Compared with the prior art, the invention has the advantages that
1. The tightness of the safety belt can be adjusted according to actual needs by winding or releasing the safety belt through the driving mechanism, the safety belt can not bring tightness to passengers, and the safety belt can not be released when the vehicle decelerates, collides or manually pulls the safety belt by limiting the release of the safety belt through the locking mechanism, so that the safety factor is further improved;
2. the limit belt is arranged to prevent the motor from rotating excessively, so that the safety belt is reversely wound on the driving shaft after being completely released, and the driving mechanism is ensured to stably operate;
3. one end of the pawl is abutted between the teeth of the ratchet wheel to limit the ratchet wheel to rotate reversely, the ratchet wheel can rotate reversely to release the safety belt only after a user releases the limit on the rotation of the ratchet wheel through the second control switch, and the safety belt is ensured to be released when the vehicle decelerates, collides or is pulled manually, so that the safety factor is high;
4. the first control button is abutted to the other end of the pawl and the second micro switch, so that when the first control button controls the pawl to rotate, the motor can be controlled to rotate reversely or not, a linkage effect is generated, and the operation is convenient.
Drawings
Fig. 1 is a schematic structural view of an electric seatbelt adjusting mechanism in a first embodiment when it is wound up;
FIG. 2 is a schematic view showing a structure of the electric seatbelt adjusting mechanism according to the first embodiment when released;
FIG. 3 is an exploded view of an electric seatbelt adjusting mechanism according to a first embodiment;
FIG. 4 is a schematic view of the structure of the latch mechanism in the first embodiment;
FIG. 5 is a schematic view showing a structure of the latch mechanism according to the first embodiment;
fig. 6 is a schematic structural view of the electric seatbelt adjusting mechanism according to the second embodiment when the electric seatbelt adjusting mechanism is wound up;
fig. 7 is a schematic view showing a structure of the electric seatbelt adjusting mechanism according to the second embodiment when released.
In the figure: 1. a driving mechanism; 11. a motor; 12. a drive shaft; 13. a first control switch; 131. a first microswitch; 132. a second microswitch; 133. a second control button; 14. a motor upper cover; 15. a motor lower cover; 16. a limit belt; 17. a driven shaft; 2. a locking mechanism; 21. a ratchet wheel; 22. a pawl; 23. a second control switch; 231. a first control button; 232. an elastic member; 24. a ratchet case upper cover; 241. a third through hole; 25. a ratchet case lower cover; 251. a second through hole; 3. a chair back; 31. a first protruding strip; 32. a second protruding strip; 4. a safety belt.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
Embodiment one: an electric seat belt adjusting mechanism, combining fig. 1 to 5, comprises a driving mechanism 1 and a locking mechanism 2, wherein the driving mechanism 1 is fixed on a seat back 3 to roll or release a seat belt 4, and the locking mechanism 2 is used for limiting the driving mechanism 1 to release the seat belt 4.
In this embodiment, the driving mechanism 1 includes a motor 11, a driving shaft 12 and a first control switch 13, the driving shaft 12 is horizontally placed, a first protruding strip 31 and a second protruding strip 32 extending along a vertical direction are arranged on the corresponding chair back 3, the first protruding strip 31 and the second protruding strip 32 are arranged at intervals along the horizontal direction, a first perforation is formed on the first protruding strip 31, a second perforation is formed on the second protruding strip 32, and the driving shaft 12 passes through the first perforation and the second perforation to be rotationally connected with the chair back 3; the motor 11 is arranged on the first raised strip 31, the motor 11 is connected with one end of the driving shaft 12, the motor 11 adopts a servo motor which can drive the driving shaft 12 to rotate forward or reversely, one end of the safety belt 4 is fixed on the driving shaft 12, and the first control switch 13 controls the motor 11 to rotate or be closed; further, the motor 11 is provided with a motor upper cover 14 and a motor lower cover 15 in the outer side, a first through hole for the driving shaft 12 to penetrate is formed in the motor lower cover 15, and the motor upper cover 14 and the motor lower cover 15 are mutually buckled to isolate the motor 11 from the outside, so that passengers are prevented from touching the motor 11 in operation, and the safety factor is improved.
In this embodiment, the first control switch 13 includes a first micro switch 131 and a second micro switch 132, when the first micro switch 131 is pressed, the motor 11 rotates forward to wind up the safety belt 4, and when the second micro switch 132 is pressed, the motor 11 rotates reversely to release the safety belt 4, so that the structure is simple and the operation is convenient.
In this embodiment, the driving mechanism 1 further includes a limiting belt 16 for limiting the rotation amount of the motor 11, one end of the limiting belt 16 is connected with the driving shaft 12, and the other end of the limiting belt 16 is connected with the seat back 3, so as to prevent the motor 11 from rotating excessively, so that the safety belt 4 is reversely wound on the driving shaft 12 after being completely released, and ensure the stable operation of the driving mechanism 1.
In this embodiment, the locking mechanism 2 includes a ratchet 21, a pawl 22 and a second control switch 23, the ratchet 21 is fixedly connected with the driving shaft 12 of the driving mechanism 1, when the seat belt 4 is wound, the ratchet 21 rotates forward along with the driving shaft 12, when the seat belt 4 is released, the ratchet 21 rotates backward along with the driving shaft 12, one end of the pawl 22 abuts against between teeth of the ratchet 21 to limit the ratchet 21 to rotate backward, and the second control switch 23 controls the pawl 22 to abut against or separate from the ratchet 21; further, the ratchet 21 is disposed coaxially with the drive shaft 12, the ratchet 21 is fixedly disposed on the drive shaft 12, and the ratchet 21 is disposed at the other end of the drive shaft 12.
In this embodiment, the second control switch 23 includes a first control button 231 and an elastic member 232, the elastic member 232 is preferably a compression spring, the first control button 231 is abutted against the other end of the pawl 22 and the second micro switch 132, when the first control button 231 is pressed, the pawl 22 is separated from the ratchet 21, the compression spring is compressed, the second micro switch 132 is closed, the motor 11 is reversed, when the first control button 231 is released, the compression spring is rebounded, the compression spring drives the pawl 22 to be abutted against the tooth space of the ratchet 21, the second micro switch 132 is opened, and the pawl 22 stops reversing.
In this embodiment, the locking mechanism 2 further includes a ratchet case upper cover 24 and a ratchet case lower cover 25, the ratchet case upper cover 24 and the ratchet case lower cover 25 are spliced to form a ratchet case for accommodating the ratchet 21, the pawl 22, the second control switch 23, the first micro switch 131 and the second micro switch 132, a second through hole 251 for the driving shaft 12 to pass through is formed in the ratchet case lower cover 25, one end of the driving shaft 12 passes through the second through hole 251 and is fixedly connected with the ratchet 21, and the pawl 22 is rotatably arranged on the ratchet case lower cover 25; the second microswitch 132 is further provided with a second control button 133, and the ratchet box upper cover 24 is provided with a third through hole 241 for the first control button 231 and the second control button 133 to extend out, so that passengers can be prevented from touching the ratchet 21 in operation, and the safety factor is improved.
When the seat belt 4 is fastened, the first control button 231 is continuously pressed, the pawl 22 rotates and is separated from the ratchet wheel 21, meanwhile, the second micro switch 132 is closed to enable the driving shaft 12 to rotate reversely, the seat belt 4 wound on the driving shaft 12 is released, a passenger can fasten the seat belt 4, after the first control button 231 is released, the second micro switch 132 is disconnected, and the pawl 22 is abutted against the teeth of the ratchet wheel 21 again under the action of the compression spring so as to limit the ratchet wheel 21 to rotate reversely; when rolling up the safety belt 4, continuously pressing the second control button 133, the first micro-gap switch 131 is closed so that the driving shaft 12 rotates forward, the safety belt 4 rotates along with the driving shaft 12 and is rolled up on the driving shaft 12, the rolling amount of the safety belt 4 is determined according to the time of pressing the second control button 133, the tightness degree of the safety belt 4 can be adjusted according to actual needs, the safety belt 4 can not bring tightness to passengers, the safety belt 4 is limited to be released through the locking mechanism 2, the safety belt is suitable for different passenger needs, and the safety factor is high.
Embodiment two: referring to fig. 6 and 7, the difference between the present embodiment and the first embodiment is that the driving mechanism 1 further includes a limit belt 16 and a driven shaft 17 for limiting the rotation amount of the motor 11, the driven shaft 17 and the driving shaft 12 rotate synchronously through gears, the driven shaft 17 and the driving shaft 12 are arranged in parallel, the driven shaft 17 and the seatback 3 are connected in rotation, one end of the limit belt 16 is connected with the driving shaft 12, and the other end of the limit belt 16 is connected with the driven shaft 17.
When the driving shaft 12 rotates reversely to release the safety belt 4, the corresponding driven shaft 17 rotates positively or reversely, the limit belt 16 is wound on the driving shaft 12, when the driving shaft 12 rotates positively to wind the safety belt 4, the corresponding driven shaft 17 rotates reversely or rotates positively, the limit belt 16 is wound on the driven shaft 17, the limit belt 16 is prevented from being knotted, and the stability of the driving mechanism 1 can be further improved.
Of course, the above is only a typical example of the invention, and other embodiments of the invention are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the invention claimed.
Claims (8)
1. An electric safety belt adjusting mechanism which is characterized in that: the safety belt device comprises a driving mechanism (1) and a locking mechanism (2), wherein the driving mechanism (1) is fixed on a seat back (3) to roll or release a safety belt (4), and the locking mechanism (2) is used for limiting the driving mechanism (1) to release the safety belt (4);
the driving mechanism (1) comprises a motor (11), a driving shaft (12) and a first control switch (13), the driving shaft (12) is rotationally connected with the chair back (3), the motor (11) drives the driving shaft (12) to rotate forwards or reversely, one end of the safety belt (4) is fixed on the driving shaft (12), and the first control switch (13) controls the motor (11) to rotate or be closed;
the driving mechanism (1) further comprises a limiting belt (16) for limiting the rotation amount of the motor (11), one end of the limiting belt (16) is connected with the driving shaft (12), and the other end of the limiting belt (16) is connected with the chair back (3); or, the driving mechanism (1) further comprises a limiting belt (16) and a driven shaft (17) which are used for limiting the rotation quantity of the motor (11), the driven shaft (17) and the driving shaft (12) synchronously rotate, the driven shaft (17) is rotationally connected with the chair back (3), one end of the limiting belt (16) is connected with the driving shaft (12), and the other end of the limiting belt (16) is connected with the driven shaft (17).
2. The electric seat belt adjustment mechanism of claim 1, wherein: the driving shaft (12) is horizontally arranged.
3. The electric seat belt adjustment mechanism of claim 1, wherein: the first control switch (13) comprises a first micro switch (131) and a second micro switch (132), when the first micro switch (131) is pressed, the motor (11) rotates positively, and when the second micro switch (132) is pressed, the motor (11) rotates reversely.
4. The electric seat belt adjustment mechanism of claim 1, wherein: the driven shaft (17) is arranged in parallel with the driving shaft (12), and the driven shaft (17) and the driving shaft (12) synchronously rotate through gears.
5. An electric seat belt adjustment mechanism as claimed in claim 3, wherein: the locking mechanism (2) comprises a ratchet wheel (21), a pawl (22) and a second control switch (23), the ratchet wheel (21) is connected with the driving mechanism (1), when the safety belt (4) is wound, the ratchet wheel (21) rotates positively, when the safety belt (4) is released, the ratchet wheel (21) rotates reversely, one end of the pawl (22) is abutted between teeth of the ratchet wheel (21) to limit the ratchet wheel (21) to rotate reversely, and the second control switch (23) controls the pawl (22) to be abutted or separated from the ratchet wheel (21).
6. The electric seat belt adjustment mechanism of claim 5, wherein: the second control switch (23) comprises a first control button (231) and an elastic piece (232), the first control button (231) is abutted to the other end of the pawl (22) and the second micro switch (132), when the first control button (231) is pressed, the pawl (22) is separated from the ratchet wheel (21), meanwhile, the second micro switch (132) is closed, the motor (11) is reversed, when the first control button (231) is released, the elastic piece (232) drives the pawl (22) to be abutted to the teeth of the ratchet wheel (21), meanwhile, the second micro switch (132) is opened, and the pawl (22) stops reversing.
7. The electric seat belt adjustment mechanism of claim 5, wherein: the ratchet wheel (21) and the driving shaft (12) are coaxially arranged, and the ratchet wheel (21) is fixedly connected with the driving shaft (12).
8. The electric seat belt adjustment mechanism of claim 6, wherein: the locking mechanism (2) further comprises a ratchet box upper cover (24) and a ratchet box lower cover (25), the ratchet box upper cover (24) and the ratchet box lower cover (25) are spliced to form a ratchet box for accommodating the ratchet (21), the pawl (22), the second control switch (23), the first micro switch (131) and the second micro switch (132), a second through hole (251) for the driving shaft (12) to penetrate through is formed in the ratchet box lower cover (25), one end of the driving shaft (12) penetrates through the second through hole (251) and then is fixedly connected with the ratchet (21), and the pawl (22) is rotatably arranged on the ratchet box lower cover (25); the second micro switch (132) is further provided with a second control button (133), and a third through hole (241) for the first control button (231) and the second control button (133) to extend out is formed in the ratchet box upper cover (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910046923.3A CN109624914B (en) | 2019-01-18 | 2019-01-18 | Electric safety belt adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910046923.3A CN109624914B (en) | 2019-01-18 | 2019-01-18 | Electric safety belt adjusting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109624914A CN109624914A (en) | 2019-04-16 |
| CN109624914B true CN109624914B (en) | 2023-09-22 |
Family
ID=66061219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910046923.3A Active CN109624914B (en) | 2019-01-18 | 2019-01-18 | Electric safety belt adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109624914B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226816A (en) * | 2019-06-28 | 2019-09-13 | 努比亚技术有限公司 | A kind of Scroll wristband constructions and wearable device |
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| CN108068749A (en) * | 2016-11-10 | 2018-05-25 | 福特全球技术公司 | Belt assembly of seat |
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| CN109624914A (en) | 2019-04-16 |
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