CN110884461A - Seat belt retractor with force reducing device - Google Patents
Seat belt retractor with force reducing device Download PDFInfo
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- CN110884461A CN110884461A CN201911213116.2A CN201911213116A CN110884461A CN 110884461 A CN110884461 A CN 110884461A CN 201911213116 A CN201911213116 A CN 201911213116A CN 110884461 A CN110884461 A CN 110884461A
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- 230000001603 reducing effect Effects 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000000670 limiting effect Effects 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 68
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 15
- 230000000694 effects Effects 0.000 description 10
- 238000003756 stirring Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
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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
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention relates to the technical field of safety belt retractors, in particular to a safety belt retractor with a force reducing device, which comprises: a spool that winds a webbing belt that restrains an occupant; the base frame supports the reel to keep the reel to rotate flexibly; the coiling spring is connected on the reel and keeps the coiling force of the reel on the braid; the safety belt retractor is characterized by further comprising a comfortable spring with the winding direction opposite to that of the winding spring, a ratchet wheel is arranged on the winding shaft, the inner end of the comfortable spring is in pawl-shaped matching with the ratchet wheel, an auxiliary spring cover is arranged on the outer portion of the comfortable spring, an arc-shaped sliding reed capable of sliding on the inner wall of the auxiliary spring cover is arranged on the inner wall of the auxiliary spring cover, the outer end of the comfortable spring is connected with the sliding reed, the outer peripheral face of the auxiliary spring cover is in ratchet wheel shape, a housing is arranged on the outer portion of the auxiliary spring cover, a pawl for limiting rotation of the auxiliary spring cover is arranged in the housing, and a plate shifting mechanism for controlling the pawl to clamp or separate from the auxiliary spring cover is arranged on the housing.
Description
Technical Field
The invention relates to the technical field of safety belt retractors, in particular to a safety belt retractor with a force reducing device.
Background
An automobile safety device is a safety device for restraining a passenger in a collision, and for preventing the passenger from colliding with a steering wheel, an instrument panel, or the like for a second time in the collision, or from being rushed out of the vehicle to cause a death and injury in the collision. The seatbelt apparatus generally includes: the seat belt retractor includes a webbing for restraining a passenger, a belt retractor for winding the webbing, a guide holder provided on a vehicle body side and guiding the webbing, a belt holder for fixing the webbing to the vehicle body side, a buckle disposed on a side surface of the seat, and a tongue disposed on the webbing, and the passenger is restrained to the seat by the webbing by the belt retractor by inserting the tongue into the buckle. The retractor functions to store webbing and lock webbing pull-out, which is the most complex mechanical part of the belt. The coiler the inside is a ratchet, the passenger can freely at the uniform velocity pulling meshbelt on the seat under the normal condition, but in case stop or when the vehicle meets emergency state from the coiler continuous pull-out process as the meshbelt, ratchet will do the locking action and die the automatic locking of meshbelt, prevent the meshbelt to pull out, be equipped with the roll-up subassembly on the coiler, the effect of roll-up subassembly lies in guaranteeing that the safety meshbelt is effectual to withdraw, make the effect that has on the safety meshbelt simultaneously, the constraint effect of performance safety belt, therefore, the power that the roll-up subassembly acted on the safety meshbelt still can produce the pressure to passenger's health, in use, there is certain uncomfortable sense.
Disclosure of Invention
The invention aims to solve the technical problem of providing a safety belt retractor with a force reducing device, which reduces the pressure feeling of a woven belt on a human body on the premise of not influencing the normal function of the retractor, has a pressure reducing effect and improves the use comfort of the safety belt.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a seatbelt retractor having a force reducing device includes: a spool that winds a webbing belt that restrains an occupant; the base frame supports the reel to keep the reel to rotate flexibly; the coiling spring is connected on the reel and keeps the coiling force of the reel on the braid; the outer peripheral surface of the auxiliary spring cover is in a ratchet shape, the outer part of the auxiliary spring cover is covered with a cover shell, a pawl for limiting the rotation of the auxiliary spring cover is arranged in the cover shell, the pawl is movably connected with the cover shell, the cover shell is provided with a plate shifting mechanism for controlling the pawl to clamp or separate from the auxiliary spring cover, the plate shifting mechanism comprises a driving gear connected to the reel and a shifting plate capable of swinging on the side edge of the driving gear, the shifting plate is movably connected with the cover shell, one end of the shifting plate far away from the driving gear is movably connected with the pawl, the shifting plate swings to drive the pawl to be close to or far away from the auxiliary spring cover, the shifting plate is provided with two shifting gears respectively distributed on two sides of the driving gear, two stirring gears are distributed in the swinging direction of the stirring plate, an active ejecting block is arranged on the driving gear, passive ejecting blocks are arranged on the two stirring gears, the two stirring gears cannot be meshed with the driving gear simultaneously, in the meshing process of the driving gear and the single-side stirring gear, the active ejecting block can eject the passive ejecting block to push the stirring gear to be disengaged from the driving gear, the stirring plate is pushed to swing towards the other side, the driving gear is meshed with the other-side stirring gear, and the side stirring gear is pushed to be disengaged from the driving gear until the active ejecting block is contacted with the passive ejecting block.
Furthermore, the winding spring is arranged on the outer side of the base frame, the comfortable spring is arranged on the outer side of the winding spring, a winding cover is arranged on the outer portion of the winding spring and connected with the base frame, a winding wheel is arranged on the reel corresponding to the winding spring, the inner end of the winding spring is connected with the winding wheel, the outer end of the winding spring is connected with the winding cover, and the winding cover is arranged inside the housing.
Furthermore, the inner cavity of the auxiliary spring cover is circular, the sliding spring leaf is in a pressed state, and the sliding spring leaf is attached to the wall of the inner cavity of the auxiliary spring cover.
Furthermore, a pawl column is arranged on the housing corresponding to the pawl, the pawl is sleeved on the pawl column, an arc-shaped groove is formed in one end, far away from the driving gear, of the shifting plate, and a sliding column which is embedded into the arc-shaped groove and is in sliding fit with the arc-shaped groove is arranged on the pawl.
Furthermore, the housing including hold the spring chamber of receiving spring, comfortable spring, hold the group board chamber of dialling the trigger mechanism, the spring chamber, dial and pass through the baffle interval between the board chamber, correspond on the baffle and dial the board department and be equipped with the cooperation and dial the wobbling swing groove of board, dial the setting of board activity in the swing groove, the baffle center department is equipped with the through-hole that the spool of being convenient for passed.
Further, the elasticity of the comfort spring is smaller than that of the coil-winding spring.
Furthermore, a pawl cavity which is convex and used for accommodating the pawl is arranged at the position of the cover shell corresponding to the pawl.
Furthermore, the poking plate cavity is provided with a detachable end cover.
The invention has the beneficial effects that: by adopting the scheme, the safety belt retractor has the braid decompression function in the inherent function through a simple structure, the comfort of the safety belt in use is improved, the decompression function is flexibly, controllably and reliably controlled, and great convenience is realized.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic diagram of an explosion structure in a real-time manner according to the present invention.
Fig. 2 is a schematic diagram of an explosion structure at a winding wheel and a ratchet wheel in a real-time manner according to the invention.
FIG. 3 is a schematic structural diagram of a plate-shifting mechanism in a real-time manner according to the present invention.
Fig. 4 is a schematic structural diagram of the auxiliary spring cover in a real-time manner according to the present invention.
FIG. 5 is a schematic diagram of a housing according to a real-time embodiment of the present invention.
FIG. 6 is a schematic cross-sectional view of a housing according to one embodiment of the present invention.
Wherein: the device comprises a reel 1, a base frame 2, a winding spring 3, a winding wheel 31, a winding cover 32, a comfort spring 4, a ratchet wheel 41, an auxiliary spring cover 42, a sliding reed 5, a housing 6, an end cover 61, a partition plate 62, a swing groove 63, an end cover 61, a shifting plate 7, a pawl 8, a driving gear 9, a driving ejector block 91, a shifting gear 10 and a driven ejector block 101.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1: referring to fig. 1, a seatbelt retractor having a force reducing device includes: the safety belt winding device comprises a winding shaft 1, the winding shaft 1 is used for winding a mesh belt for limiting passengers, a base frame 2, the base frame 2 is used for supporting the winding shaft 1 to keep the winding shaft 1 to rotate flexibly, the winding shaft 1 is in rotatable fit with the base frame 2, a winding spring 3 is arranged on the outer side of one end of the base frame 2, correspondingly, the end part of the side of the winding shaft 1 extends out of the base frame 2, a winding wheel 31 is sleeved on the outer side of the end of the winding shaft 2, the winding wheel 31 is connected with the end part of the winding shaft through a spline, the outer peripheral surface of the winding wheel 31 is provided with a plurality of uniformly distributed connecting clamping grooves, the winding spring 3 is sleeved outside the winding wheel 31, the inner end of the winding spring 3 is clamped into the connecting clamping groove to be connected with the winding wheel 31, the outer end of the winding spring 3 is connected to a winding cover 32 which is covered and fixed on the outer side of the winding, the winding cover 32 is arranged to protect the winding spring, avoid external foreign matter interference and ensure the winding function, the end part of the winding wheel 31 far away from the base frame 2 is provided with a first convex connecting column, and the axis of the hollow connecting column is consistent with the axis of the scroll.
A comfort spring 4 is arranged on the outer side of the coil winding spring 3, the winding direction of the comfort spring 4 is opposite to that of the coil winding spring 3, in addition, the elasticity of the comfort spring 4 is smaller than that of the coil winding spring 3, referring to fig. 2, a ratchet wheel 41 is connected on the outer side of a winding wheel 31, the ratchet wheel 41 is connected on a hollow connecting column of the winding wheel, one end of the ratchet wheel 41 close to a base frame is in matched connection with a first connecting column of the winding wheel, the end of the ratchet wheel is connected with the first connecting column through a spline structure to realize the synchronous rotation of the ratchet wheel and the winding wheel, the other end of the ratchet wheel 41 far away from the base frame is provided with a convex second connecting column which is coaxial with the ratchet wheel, the comfort spring is sleeved on the outer part of the ratchet wheel, the inner end of the comfort spring 4 is bent towards the center to form a pawl structure, the pawl structure can be matched with the ratchet wheel to form unidirectional locking, an auxiliary spring cover, the sliding reed 5 is in a compression state, the sliding reed 5 is attached to the inner wall of the inner cavity and can slide, the outer end of the comfortable spring 4 is connected with the sliding reed 5, the outer peripheral surface of the auxiliary spring cover 4 is in a ratchet shape, a housing 6 is covered outside the auxiliary spring cover 4, a movable pawl 8 which can be matched with the ratchet-shaped outer peripheral surface of the auxiliary spring cover 4 and can limit rotation of the auxiliary spring cover is arranged at the outer side of the auxiliary spring cover 4 in the housing, a groove is formed in the pawl 8, a pawl column is arranged at the corresponding position of the housing 6 and is embedded into the groove, the pawl has swinging property and can move close to or far away from the auxiliary spring cover, the pawl 8 is meshed with the ratchet-shaped outer peripheral surface of the auxiliary spring cover 4, the auxiliary spring cover is locked and cannot rotate, the pawl is separated from the outer peripheral surface of the auxiliary spring cover, and the auxiliary spring cover.
Referring to fig. 4, when the pawl is in a state of locking the auxiliary spring cover, i.e. the auxiliary spring cover is fixed, and the safety belt is pulled outwards, the reel rotates, the winding wheel drives the inner end of the winding spring to rotate, wind and accumulate force, the ratchet wheel pulls the comfort spring to wind and accumulate force, the winding spring winds and accumulates force, the winding force is generated on the reel, so that the safety belt has the recovered winding force, the braid generates pressure on the body of a passenger, and the winding direction of the comfort spring is opposite to that of the winding spring, therefore, the acting force of the comfort spring acting on the reel is opposite to that of the winding spring, and further the winding force of the winding spring is counteracted, so that the pressure of the safety belt on the passenger is reduced, the pressure feeling of the safety belt on the body of the passenger is reduced, and the comfort spring has the pressure reducing effect, the retractor has the pressure reducing effect, improves the use comfort of the safety belt device, the adopted comfort, the safety belt is guaranteed to be retractable, the normal use function of the retractor is not influenced, the inherent safety guarantee function of the safety belt device is guaranteed, the comfortable spring only plays a role in reducing tightening pressure, the outer end of the winding spring is fixed on the winding spring cover, the winding spring cover is fixed, and the winding spring can effectively store force.
The outer end of the comfortable spring is connected with the sliding reed, the sliding reed is pressed and attached to the inner wall of the inner cavity of the auxiliary spring cover and has radial pressure, the sliding reed is in the range of the self-elasticity of the sliding reed and is fixed at the position of the inner wall of the inner cavity, therefore, the sliding reed has a limiting effect on the outer end of the comfortable spring, under the condition that the auxiliary spring cover is fixed, the outer end of the comfortable spring is fixed and is effectively wound to generate the pressure reduction of the comfortable spring in the range of the elasticity of the sliding reed, the pressure reduction effect is realized, the safety belt retracts, the spring is wound, the ratchet wheel has a one-way locking and pulling effect on the comfortable spring and does not act reversely, therefore, the comfortable spring can keep the self state, the comfortable spring continuously stores force in the continuous external pulling process of the safety belt, and when the acting force on the comfortable spring is greater than the elasticity of the sliding, the sliding reed elasticity is overcome to effort on comfortable spring promptly, the positioning action of sliding reed is inefficacy, the outer end of comfortable spring drives the sliding reed and slides in vice spring housing inner chamber, at this moment, comfortable spring loses the decompression effect, effectively guarantee the safety action of safety belt, therefore, the effort of comfortable spring has the intervallity, it is corresponding, on the outer length of drawing of safety belt, there is a comfortable length scope of human body, in this comfortable length scope of human body, comfortable spring offsets partial effort of receiving the wind spring, the pressure reducing function has, reduce the pressure of tightening of safety belt to passenger's health, improve the travelling comfort, through simple structure, make the extremely strong adjustability of this coiler use, the flexibility.
In order to enable the position of the comfortable length range of the human body on the safety woven belt to be controllable and adjustable, the invention provides a plate shifting mechanism capable of controlling the state of a pawl, the plate shifting mechanism controls the pawl to be in a locking or unlocking state, the specific plate shifting mechanism is arranged at a housing, referring to fig. 3, the plate shifting mechanism is arranged at the outer side of a ratchet wheel 41 and comprises a driving gear 9 and a shifting plate 7 with the side edge of the driving gear 9 capable of swinging, the shifting plate 7 is movably connected with the housing 6, one end of the driving gear 9 close to a base frame is connected with a second connecting column of the ratchet wheel through a spline structure, the driving gear synchronously rotates with the ratchet wheel coaxially, one end of the shifting plate 7 far away from the driving gear 9 is movably connected with the pawl 8, specifically, one end of the driving gear 9 far away from the shifting plate 7 is provided with an arc-shaped groove 71, the pawl, the shifting plate 7 swings, the arc-shaped groove 71 pushes the sliding column to enable the pawl 8 to move close to or far away from the outer peripheral surface of the auxiliary spring cover 4, one side of the shifting plate 7 close to the driving gear 9 is provided with two shifting gears 10 which are respectively distributed on two sides of the driving gear 9, the two shifting gears 10 can freely rotate on the shifting plate, the two shifting gears 10 are distributed in the swinging direction of the shifting plate 7, the driving gear 9 is provided with an active top block 91, the active top block 91 is arranged on the outer end surface of the driving gear 9 far away from the base frame, the active ground block 91 does not influence the meshing performance of the driving gear, the two shifting gears 10 are respectively provided with a passive top block 101, the passive top block 101 is arranged on the outer end surface of the shifting gear 10 far away from the base frame, the passive top block 101 does not influence the meshing performance of the shifting gears 10, the total length of the active top block 91 and the passive top block 101 after, the separation of the driving gear and the toggle gear is realized, two toggle gears 10 can not be meshed with the driving gear 9 at the same time, the driving gear 9 can only be meshed with a single toggle gear 10 and is separated from another toggle gear 10, in the meshing process of the driving gear 9 and the single-side toggle gear 10, the driving gear 9 rotates to drive the toggle gear 10 to rotate, in a certain set position, the driving ejector block 91 and the driven ejector block 101 can be contacted, the driving gear is fixed in position, the driving ejector block can eject the driven ejector block to enable the toggle gear to move towards the direction far away from the driving ejector block, the toggle gear is separated from the driving gear, meanwhile, the side gear which is separated from meshing drives the toggle plate to swing towards the other side, then, the driving gear 9 is meshed with the toggle gear 10 at the other side to drive the toggle gear at the side to rotate, when the side rotates to the set position, the driving top block of the driving gear can contact with the driven top block of the shifting gear at the side, the shifting gear at the side is pushed to be disengaged with the driving gear, so that the shifting plate swings to the other side, and the left-right swing of the shifting plate is controlled through the transmission between the driving gear and the shifting gear and the contact pushing between the driving top block and the driven top block, thereby realizing the state control of the pawl, the position of the driven top block on the shifting gear is different relative to the position of the driving top block on the driving gear, so that the driving gear has specific rotating circles to push the shifting gear to be disengaged, the shifting plate mechanism not only can be used for controlling the pawl, but also can be used in places needing state change, the rotating angles of the shifting gear and the shifting gear are adjusted, the pushing positions of the driving top block and the driven top block are adjusted, the driving gear and a scroll synchronously rotate, and the setting position of the driven top block corresponds to a certain tooth of the shifting gear, the setting position of the driving ejector block corresponds to a certain tooth of the driving gear, the driving gear is fixed in position, and the contact time of the driving ejector block and the driven ejector block can be obtained through calculation.
In the embodiment, the driving gear is taken as a reference, the clockwise direction is the right side, the anticlockwise direction is the left side, when the left side toggle gear is meshed with the driving gear, the pawl is in a state of locking the auxiliary spring cover, in a locked state, the comfortable spring has a comfortable effect, the tightening pressure of a safety belt to a human body is reduced, the left side toggle gear is pushed away along with the rotation of the left side toggle gear following the driving gear to reach a set position, the toggle plate swings clockwise, then the right side toggle gear is meshed with the driving gear, meanwhile, the toggle plate drives the pawl to be away from the auxiliary spring cover, the auxiliary spring cover is unlocked, the pawl is in an unlocked state of the auxiliary spring cover, the auxiliary spring cover can rotate, then the spring pressure reduction function is lost comfortably, in the continuous rotation of the driving gear, the left side toggle gear is meshed with the toggle gears at different positions and is separated in a jacking mode, then the, the use of the pressure reduction function of the comfortable spring is controlled through the simple plate shifting mechanism, the flexible, adjustable and controllable human body comfortable length range on the safety woven belt is realized, the use performance is improved, and the use effect is strong.
The driving gear continues to rotate, the right toggle gear is pushed away at a set position, the toggle plate swings anticlockwise, the pawl is close to the outer peripheral surface of the auxiliary spring cover to lock the auxiliary spring cover, so that the comfort spring has a pressure reducing function again, meanwhile, the left toggle gear is meshed with the driving gear again, the driving gear continues to rotate, the left toggle gear is pushed away at the set position again, the toggle plate swings clockwise, the pawl unlocks again, the circulation is repeated, on a sufficiently long braid, the intermittent regular distribution of the length range comfortable for a human body on the braid can be realized, the use range is enlarged, the locking or unlocking state of the auxiliary spring cover is flexible and controllable, the pressure on the braid is reduced on the premise of not influencing the fixed effect of the safety belt, the pressure on the human body is reduced, the use comfort is improved, the structure is simple and ingenious, the reliability is high, and the manufacture is, the electric appliance elements are not added, so that the vehicle can be conveniently matched for use, and the wiring harness of the vehicle body does not need to be changed.
The spring coiling, the comfortable spring and the plate shifting mechanism are sequentially arranged at one end of the outer side of the base frame, the volume of the retractor is favorably reduced, the use performance of the retractor is improved, the housing 6 is connected to the base frame, referring to fig. 6, the housing 6 comprises a spring coiling cavity for accommodating the spring coiling 3 and the comfortable spring 4 and a plate shifting cavity for accommodating the plate shifting mechanism, the spring coiling cavity and the plate shifting cavity are separated by a partition plate 62, a swing groove 63 matched with the plate shifting swing is arranged at the position, corresponding to the plate shifting, of the partition plate 62, the plate shifting 7 is movably arranged in the swing groove 63, a through hole convenient for a second connecting column to pass through is arranged at the center of the partition plate 62, the transmission between the driving gear and the ratchet wheel is convenient, the spring coiling cavity and the plate shifting cavity are mutually independent, the spring coiling and the comfortable spring are effectively ensured not to be interfered by foreign objects, the assembly operation is convenient, particularly the assembly of the, the pawl is convenient to assemble, the detachable end cover 61 is arranged in the plate shifting cavity, and the plate shifting mechanism is convenient to assemble.
Referring to fig. 5, an annular groove is formed in one end surface, facing the auxiliary spring cover, of the partition plate 62, a plurality of protrusions are formed in one end surface, facing the partition plate, of the auxiliary spring cover, the protrusions are embedded into the annular groove to guide rotation of the auxiliary spring cover, assembling accuracy between the housing and the auxiliary spring cover is improved, and rapid positioning and assembling are facilitated.
Example 2: the difference between this embodiment and embodiment 1 is that, in this embodiment, the outer end of the reel extends to the driving gear, the end of the reel is matched with the driving gear key and can rotate synchronously, and the winding wheel and the ratchet wheel are sleeved on the reel and rotate synchronously with the reel.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (8)
1. A seatbelt retractor having a force reducing device includes:
a spool that winds a webbing belt that restrains an occupant;
the base frame supports the reel to keep the reel to rotate flexibly;
the coiling spring is connected on the reel and keeps the coiling force of the reel on the braid;
it is characterized in that the preparation method is characterized in that,
the outer peripheral surface of the auxiliary spring cover is ratchet-shaped, the outer part of the auxiliary spring cover is covered with a cover shell,
a pawl for limiting the rotation of the auxiliary spring cover is arranged in the housing, the pawl is movably connected with the housing, the housing is provided with a plate shifting mechanism for controlling the pawl to clamp or separate from the auxiliary spring cover, the plate shifting mechanism comprises a driving gear connected on the scroll and a shifting plate with the side edge of the driving gear capable of swinging, the shifting plate is movably connected with the housing, one end of the shifting plate far away from the driving gear is movably connected with the pawl, the shifting plate swings to drive the pawl to be close to or far away from the auxiliary spring cover, the shifting plate is provided with two shifting gears which are respectively distributed at two sides of the driving gear, the two shifting gears are distributed in the swinging direction of the shifting plate, the driving gear is provided with an active top block, the two shifting gears are provided with passive top blocks, the two shifting gears cannot be simultaneously engaged with the driving gear, in the process of the driving gear and the single-side shifting gears, the driving gear and the shifting gear on the other side are meshed until the driving ejector block is contacted with the driven ejector block to push the shifting gear on the side to be disengaged from the driving gear.
2. The seatbelt retractor according to claim 1, wherein the wind-up spring is disposed outside the base frame, the comfort spring is disposed outside the wind-up spring, a wind-up cover is disposed outside the wind-up spring, the wind-up cover is connected to the base frame, a wind-up pulley is disposed on the spool corresponding to the wind-up spring, an inner end of the wind-up spring is connected to the wind-up pulley, an outer end of the wind-up spring is connected to the wind-up cover, and the wind-up cover is disposed inside the housing.
3. The seatbelt retractor according to claim 1, wherein the sub spring cover has a circular inner cavity, the sliding spring is in a compressed state, and the sliding spring is attached to the inner cavity wall of the sub spring cover.
4. The seatbelt retractor according to claim 1, wherein the housing has a pawl post corresponding to the pawl, the pawl is disposed on the pawl post, an arc slot is disposed at an end of the driving gear away from the dial plate, and a sliding post embedded in the arc slot and slidably engaged with the arc slot is disposed on the pawl.
5. The safety belt retractor with the force reducing device as claimed in claim 1, wherein the housing comprises a coil spring cavity for accommodating the coil spring and the comfort spring, and a shifting plate cavity for accommodating the shifting plate mechanism, the coil spring cavity and the shifting plate cavity are separated by a partition plate, a swing groove matched with the shifting plate to swing is arranged on the partition plate corresponding to the shifting plate, the shifting plate is movably arranged in the swing groove, and a through hole for allowing the reel to pass through is arranged at the center of the partition plate.
6. The seatbelt retractor having a force reducing device as claimed in claim 1, wherein the comfort spring has a spring force smaller than that of the take-up spring.
7. The seatbelt retractor according to claim 1, wherein the housing is provided with a pawl chamber for receiving the pawl at a position corresponding to the pawl.
8. The seatbelt retractor having a force reducing mechanism according to claim 5 wherein the toggle plate chamber is provided with a removable end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911213116.2A CN110884461A (en) | 2019-12-02 | 2019-12-02 | Seat belt retractor with force reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911213116.2A CN110884461A (en) | 2019-12-02 | 2019-12-02 | Seat belt retractor with force reducing device |
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| Publication Number | Publication Date |
|---|---|
| CN110884461A true CN110884461A (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911213116.2A Pending CN110884461A (en) | 2019-12-02 | 2019-12-02 | Seat belt retractor with force reducing device |
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| CN (1) | CN110884461A (en) |
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| CN202098373U (en) * | 2011-06-10 | 2012-01-04 | 广东大豪汽车零部件实业有限公司 | Safety belt for vehicle |
| CN206086637U (en) * | 2016-07-28 | 2017-04-12 | 诸城市晨正汽车配件有限公司 | Automobile safety belt winding device assembly |
| CN109278701A (en) * | 2018-12-04 | 2019-01-29 | 沈阳金杯锦恒汽车安全系统有限公司 | Safety belt crimping device and coiler |
| CN211335892U (en) * | 2019-12-02 | 2020-08-25 | 常州市东晨车辆部件有限公司 | Seat belt retractor with force reducing device |
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2019
- 2019-12-02 CN CN201911213116.2A patent/CN110884461A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010149584A (en) * | 2008-12-24 | 2010-07-08 | Autoliv Development Ab | Seat belt retractor |
| CN202098373U (en) * | 2011-06-10 | 2012-01-04 | 广东大豪汽车零部件实业有限公司 | Safety belt for vehicle |
| CN206086637U (en) * | 2016-07-28 | 2017-04-12 | 诸城市晨正汽车配件有限公司 | Automobile safety belt winding device assembly |
| CN109278701A (en) * | 2018-12-04 | 2019-01-29 | 沈阳金杯锦恒汽车安全系统有限公司 | Safety belt crimping device and coiler |
| CN211335892U (en) * | 2019-12-02 | 2020-08-25 | 常州市东晨车辆部件有限公司 | Seat belt retractor with force reducing device |
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