CN108297746B - Child seat and safety belt adjusting mechanism thereof - Google Patents
Child seat and safety belt adjusting mechanism thereof Download PDFInfo
- Publication number
- CN108297746B CN108297746B CN201810199746.8A CN201810199746A CN108297746B CN 108297746 B CN108297746 B CN 108297746B CN 201810199746 A CN201810199746 A CN 201810199746A CN 108297746 B CN108297746 B CN 108297746B
- Authority
- CN
- China
- Prior art keywords
- seat
- hand wheel
- belt
- rotating shaft
- safety belt
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 74
- 230000005540 biological transmission Effects 0.000 claims description 34
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000000452 restraining effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 11
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/265—Adaptations for seat belts
-
- 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
- B60R22/18—Anchoring devices
- B60R22/26—Anchoring devices secured to the seat
Abstract
The invention relates to a child seat and a seat belt adjusting mechanism thereof, which comprises: the seat framework is rotatably arranged on the seat framework, and a safety belt is fixedly wound on the rotation shaft; the angle adjuster is arranged at least one of two end parts of the rotating shaft, and the end part corresponding to the rotating shaft is rotatably arranged on the seat framework through the angle adjuster; and the driving structure is in driving connection with the angle adjuster, and drives the angle adjuster to rotate through the driving structure so as to drive the rotating shaft to rotate, so that the length adjustment of the safety belt is realized. The invention realizes the locking of the safety belt by using the angle adjuster, and ensures the stable and reliable restraining function of the safety belt. The rotation shaft is used for installing the safety belt, and the driving structure can drive the rotation shaft to rotate, so that the safety belt can be conveniently pulled out in the adjusting process, and the safety belt is also conveniently retracted, and is simple and convenient to operate. The invention not only ensures the locking stability of the safety belt, but also has the advantage of convenient adjustment.
Description
Technical Field
The invention relates to the technical field of child seat structures, in particular to a child seat and a safety belt adjusting mechanism thereof.
Background
Along with the steady rise of the automobile conservation rate, the automobile has become the first choice mode of people going on a journey, and in order to better ensure the safety of children taking the automobile, the child safety seat has become the first choice of people.
The safety belt mechanism on the child seat is a core component of the child seat for protecting the child occupant from injury caused by collision accidents, so the reliability and the stability of the safety belt mechanism are very important for the child seat. Because the safety belt needs to be frequently adjusted when the child seat is used daily, the convenience in use is also an important design consideration. The safety belt mechanism on the existing child seat cannot meet the requirements of locking stability and adjusting convenience, and the safety belt mechanism of the child seat is high in locking stability, so that the safety belt is very complicated to adjust, and inconvenience is brought to a user.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a child seat and a safety belt adjusting mechanism thereof, and solves the problem that the existing safety belt mechanism cannot meet the requirements of locking stability and convenient adjustment.
The technical scheme for achieving the purpose is as follows:
the invention provides a safety belt adjusting mechanism of a child seat, comprising:
the seat framework is rotatably arranged on the seat framework, and a safety belt is fixedly wound on the rotation shaft;
the angle adjuster is arranged at least one of two end parts of the rotating shaft, and the end part corresponding to the rotating shaft is rotatably arranged on the seat framework through the angle adjuster; and
the driving structure is in driving connection with the angle adjuster, and the angle adjuster is driven to rotate through the driving structure so as to drive the rotating shaft to rotate, so that the length adjustment of the safety belt is realized.
The invention realizes the locking of the safety belt by using the angle adjuster, and ensures the stable and reliable restraining function of the safety belt. The rotation shaft is used for installing the safety belt, and the driving structure can drive the rotation shaft to rotate, so that the safety belt can be conveniently pulled out in the adjusting process, and also can be conveniently retracted, the length adjustment of the safety belt is realized, and the operation is simple and convenient. The invention not only ensures the locking stability of the safety belt, but also has the advantage of convenient adjustment.
The safety belt adjusting mechanism of the child seat is further improved in that the angle adjuster comprises a fixing part fixedly arranged on the seat framework and a rotating part rotatably arranged on the fixing part, the rotating part is fixedly connected with the end part corresponding to the rotating shaft, and the rotating part is also connected with the driving structure.
The safety belt adjusting mechanism of the child seat is further improved in that a polygonal hole is formed in the rotating part;
the driving structure is connected with a transmission shaft matched with the polygonal hole, the polygonal hole is penetrated by the transmission shaft, the transmission shaft is driven to rotate by the driving structure, and then the rotating part is driven to rotate by the polygonal hole.
The safety belt adjusting mechanism of the child seat is further improved in that angle adjusters are arranged at two end parts of the rotating shaft;
the transmission shaft penetrates through polygonal holes in the two angle adjusters and is partially arranged in the rotating shaft so as to synchronously drive the two angle adjusters to rotate.
The invention further improves a safety belt adjusting mechanism of a child seat, which is characterized in that the driving structure is a hand wheel and comprises a hand wheel seat, a hand wheel cover and a first coil spring, wherein the hand wheel seat is in driving connection with an angle adjuster, the hand wheel cover is clamped with the hand wheel seat, and the first coil spring is connected with the hand wheel seat and the hand wheel cover; the hand wheel seat is provided with a telescopic sliding pin, and the hand wheel cover is provided with a locking port matched with the sliding pin;
the hand wheel cover can rotate relative to the hand wheel seat, and when the hand wheel cover rotates relative to the hand wheel seat, the first coil spring generates a rolling force opposite to the rotating direction so as to reset the hand wheel cover; when the hand wheel cover rotates to the limit position, a sliding pin on the hand wheel seat is inserted into the locking opening to lock the hand wheel seat and the hand wheel cover.
The safety belt adjusting mechanism of the child seat is further improved in that the driving structure is a motor.
The invention further improves the safety belt adjusting mechanism of the child seat, which is characterized by further comprising a safety belt rotating shaft which is rotatably sleeved on the rotating shaft and used for winding a safety belt, wherein one end of the safety belt rotating shaft is provided with a rotating reset mechanism which generates a rotating force after rotating, the rotating reset mechanism is connected with the rotating shaft, and the rotating reset mechanism reaches an extreme position by rotating the rotating shaft so as to lock the safety belt.
The safety belt adjusting mechanism of the child seat is further improved in that the rotating reset mechanism comprises a coil spring cover fixedly arranged at one end of a rotating shaft of the safety belt and a coil spring arranged on the coil Huang Gaina, one end of the coil spring is fixedly connected with the coil spring cover, and the other end of the coil spring is fixedly connected with the rotating shaft.
The seat belt adjusting mechanism of the child seat is further improved in that the seat frame comprises a backrest frame and a cushion frame which are connected with each other;
the rotating shaft is rotatably arranged between two side plates of the backrest framework or between two side plates of the cushion framework.
The present invention also provides a child seat comprising:
a seat frame; and
and the safety belt adjusting mechanism is arranged on the seat framework and used for adjusting the length of the safety belt.
Drawings
Fig. 1 is a schematic view showing a structure in which a seat belt adjusting mechanism of a child seat of the present invention is mounted to a back frame.
Fig. 2 is a schematic exploded view of fig. 1.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a schematic view of the structure of the recliner in the belt adjustment mechanism of the child seat of the present invention.
Fig. 5 is a schematic view of a structure in which a seat belt adjusting mechanism of the child seat of the present invention is provided with a seat belt rotating shaft and a rotating return mechanism.
Fig. 6 is a schematic view of an exploded structure of fig. 5.
Fig. 7 is an enlarged partial schematic view of the seat belt spindle and the rotary return mechanism of fig. 6.
Fig. 8 is a schematic structural view of the child seat belt adjusting mechanism of the present invention mounted to a seat cushion frame.
Fig. 9 is a schematic view of a driving structure of the child seat belt adjusting mechanism of the present invention as a hand wheel.
Fig. 10 is an exploded view of the belt adjusting mechanism of fig. 9.
Fig. 11 is a schematic structural view of a hand wheel and a rotating shaft.
Fig. 12 is a schematic view of an exploded construction of the hand wheel.
Fig. 13 is a schematic view of the structure of the cover in the hand wheel.
Fig. 14 is a schematic structural view of the wheel seat in the hand wheel.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the invention provides a child seat and a seat belt adjusting mechanism thereof, which are used for ensuring reliable locking of a seat belt and convenient and fast adjustment of the seat belt. The invention uses the angle adjuster to lock all the time in the adjusting process of the safety belt, and can provide huge locking force, thereby effectively ensuring the stability and reliability of the restraining function of the safety belt. In addition, the length of the safety belt is adjusted by driving the rotating shaft to rotate through the driving structure, and the operation is simple, convenient and visual. The child seat and the seat belt adjusting mechanism of the present invention will be described with reference to the accompanying drawings.
Referring to fig. 1, a schematic view of a seat belt adjusting mechanism of a child seat according to the present invention is shown mounted to a back frame. Referring to fig. 2, a schematic exploded view of the structure of fig. 1 is shown. The webbing adjustment mechanism of the child seat of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the seat belt adjusting mechanism 20 of the child seat of the present invention includes a rotation shaft 21, a recliner 22, and a driving structure 23, the rotation shaft 21 is rotatably mounted on a seat frame, a seat belt 13 is wound around and fixed to the rotation shaft 21, and retraction of the seat belt 13 is achieved by rotation of the rotation shaft 21; at least one recliner 22 provided at least one of both end portions of the rotation shaft 21, the corresponding end portion of the rotation shaft 21 being rotatably mounted on the seat frame through the recliner 22; the driving structure 23 is in driving connection with the angle adjuster 22, and the angle adjuster 22 is driven to rotate through the driving structure 23 so as to drive the rotating shaft 21 to rotate, so that the length adjustment of the safety belt 13 is realized.
Because the angle adjuster 22 has a locking function in the adjusting process, the angle adjuster 22 is used for connecting and driving the rotating shaft 21 to rotate, so that the safety belt 13 always has a good locking function in the length adjusting process, the safety belt can keep the maximum restraint on children and passengers, and the use safety is improved.
The seat frame includes a back frame 11 and a seat cushion frame 12 connected to each other, the back frame 11 includes a pair of side plates 111 disposed opposite to each other, the seat cushion frame 12 also includes a pair of side plates disposed opposite to each other, and the rotation shaft 21 of the present invention is rotatably installed between the side plates 111 of the back frame 11 or the rotation shaft 21 is rotatably installed between the side plates of the seat cushion frame 12. As shown in fig. 1 and 2, when the rotation shaft 21 is installed between the side plates 111 of the back frame 11, the corresponding end portions of the rotation shaft 21 are rotatably installed on the corresponding side plates 111 of the back frame 11 through the recliner 22. A stay 113 is supported and fixed at an upper portion of the back frame 11, and after the webbing 13 is wound around the rotation shaft 21, one end portion passes around the stay 113 and protrudes from the back of the child seat to form a webbing for restraining the child occupant outside the child seat. The safety belt 13 is guided by the support rods 113, so that the stability of the safety belt 13 during the adjustment process is ensured. As shown in fig. 8, when the rotation shaft 21 is installed between the side plates of the seat cushion frame 12, the end portion corresponding to the rotation shaft 21 is rotatably installed on the side plate corresponding to the seat cushion frame 12 through the recliner 22. A steering shaft 121 is supported and connected to the end portion of the seat cushion frame 12 connected to the back frame 11, and the webbing 13 is wound around the rotating shaft 21, and one end portion is wound around the steering shaft 121 and then wound around the stay 113, and then extends from the back of the child seat to form a webbing for restraining the child occupant outside the child seat. The steering shaft 121 is arranged to guide the safety belt 13 into the backrest frame 11, and the steering shaft 121 plays a role in guiding, so that the stability of the safety belt in the adjusting process is ensured. Preferably, the reversing shaft 121 is disposed parallel to the stay 113, both of which act as guides for the seat belt 13.
In one embodiment, the recliner 22 is one, the other end of the rotation shaft 21 is mounted on the seat frame through a bearing or a rotation wheel, and when the recliner 22 drives the rotation shaft 21 to rotate, the other end of the rotation shaft 21 rotates together. When the rotation shaft 21 is mounted on the back frame 11, the other end of the rotation shaft 21 is mounted on the other side plate 111 of the back frame 11 through a bearing or a rotation wheel; when the rotation shaft 21 is mounted on the seat cushion frame 12, the other end of the rotation shaft 21 is mounted on the other side plate of the seat cushion frame 12 through a bearing or a rotation wheel. In another embodiment, as shown in fig. 3, there are two recliner 22, both ends of the rotating shaft 21 are rotatably mounted on the seat frame through the recliner 22, the two recliner 22 can synchronously rotate through the driving structure 23, and the two recliner 22 has a stronger locking effect. When the rotating shaft 21 is mounted on the back frame 11, both ends of the rotating shaft 21 are rotatably mounted on both side plates 111 of the back frame 11 through the recliner 22; when the rotating shaft 21 is mounted on the seat cushion frame 12, both ends of the rotating shaft 21 are rotatably mounted on both side plates of the seat cushion frame 12 through the recliner 22.
The invention realizes the adjustment of the length of the safety belt by utilizing the rotation of the rotating shaft, and the rotating shaft is controlled to rotate by the angle adjuster, so that the adjustment is convenient and fast on the one hand, and the safety belt has firm locking effect on the other hand.
As a preferred embodiment of the present invention, as shown in fig. 2 and 4, the recliner 22 includes a fixed portion 221 fixedly installed on the seat frame and a rotating portion 222 rotatably provided on the fixed portion, the rotating portion 222 is fixedly connected to a corresponding end portion of the rotating shaft 21, and the rotating portion 222 is connected to the driving structure 23. The driving structure 23 drives the rotating part 222 to rotate, so as to drive the rotating shaft 21 to rotate, thereby realizing the retraction operation of the safety belt 13. Preferably, a mounting hole is provided in the side plate 111 of the backrest frame 11 at a position corresponding to the mounting position of the recliner 22, and the fixing portion 221 of the recliner 22 is fixedly connected to the side plate 111 through the mounting hole. At the time of connection, the fixing portion 221 may be selectively welded to the side plate 111. The fixing portion 221 of the recliner 22 is fixedly connected to the side plate 111 of the back frame 11 when the rotation shaft 21 is attached to the back frame 11, and is fixedly connected to the side plate of the rental car frame 12 when the rotation shaft 21 is attached to the seat frame 12.
As another preferred embodiment of the present invention, as shown in fig. 2 and 4, a polygonal hole 223 is formed in the rotation part 222; the driving structure 23 is connected with a transmission shaft 24 which is matched with the polygonal hole 223, the polygonal hole 223 is penetrated by the transmission shaft 24, the transmission shaft 24 is driven to rotate by the driving structure 23, and then the rotating part 222 is driven to rotate by the polygonal hole 223. The cross-sectional shape of the drive shaft 24 is adapted to the shape of the polygonal hole 223. The polygonal hole 223 may be a square hole, a triangular hole, or a hexagonal hole, and the transmission shaft 24 may be a square shaft, a triangular shaft, or a hexagonal shaft, respectively, and the transmission shaft 24 and the polygonal hole 223 achieve a transmission effect through the cooperation of corresponding sides. Preferably, the driving structure 23 is also provided with a mounting hole adapted to the transmission shaft 24, and the transmission shaft 24 is mounted and fixed by using the mounting hole.
Further, the two ends of the rotation shaft 21 are provided with the recliner 22, that is, two recliner 22. The transmission shaft 24 penetrates through polygonal holes in the two angle adjusters 22 and is partially arranged in the rotating shaft 21 so as to synchronously drive the two angle adjusters 22 to rotate. One end of the transmission shaft 24 passes through the polygonal hole 223 of one of the recliners 22, passes through the rotation shaft 21, then passes through the polygonal hole 223 of the other recliner 22, and is fixedly connected to the driving structure 23. The other end of the drive shaft 24 abuts against the side plate 111 of the back frame 11.
Further, a limiting boss 241 is formed on the end of the transmission shaft 24 away from the driving structure 23 at a side of the fixed portion 221 of the corresponding recliner 22 away from the rotating portion 222. The angle adjuster 22 is installed on the side plate 111 of the backrest frame 11, the fixing portion 221 of the angle adjuster 22 is located on the outer side of the side plate 111, the rotating portion 222 is located on the inner side of the side plate 111, the limiting boss 241 is located on the outer side of the fixing portion 221, a through hole for the transmission shaft 24 to pass through is formed in the fixing portion 221, the size of the limiting boss 241 is larger than that of the through hole, the transmission shaft 24 is limited through the limiting boss 241, and the transmission shaft 24 cannot be pulled out from one side connected with the driving structure 23. The angle adjuster 22 is installed on the side plate of the cushion skeleton 12, the fixing portion 221 of the angle adjuster 22 is located on the outer side of the side plate of the cushion skeleton 12, the rotating portion 222 is located on the inner side of the side plate of the cushion skeleton 12, the limiting boss 241 is located on the outer side of the fixing portion 221, a through hole for the transmission shaft 24 to pass through is formed in the fixing portion 221, the size of the limiting boss 241 is larger than that of the through hole, the transmission shaft 24 is limited through the limiting boss 241, and the transmission shaft 24 cannot be pulled out from one side connected with the driving structure 23.
As another preferred embodiment of the present invention, a connection plate 25 is fixedly provided on a side of the rotation portion 222 of the recliner 22 remote from the fixing portion 221, and the rotation shaft 21 is fixed by the connection plate 25. The connecting plate 25 is provided with a connecting seat for connecting the rotating shaft 21, and the end part of the rotating shaft 21 is inserted into the connecting seat and fixedly connected with the connecting seat. The connection seat is a cylindrical structure protruding from the surface of the connection plate 25, and a space adapted to the rotation shaft 21 is formed inside the connection seat, so that the rotation shaft 21 can be inserted into the cylindrical structure and fixedly connected with the cylindrical structure. Preferably, the rotation shaft 21 and the connection plate 25 may be welded and fixed. The connecting plate 25 may also be welded to the rotating portion 222 of the recliner 22. By adopting a fixed connection mode, after the safety belt 13 is adjusted, the pulling force of the safety belt 13 acts on the angle adjuster 22 through the rotating shaft 21 and the connecting plate 25, the angle adjuster 22 further transmits the force to the seat framework, and the locking function of the angle adjuster 22 ensures that the rotating shaft 21 cannot rotate due to the pulling force of the safety belt 13, so that the locking effect is achieved.
As still another preferred embodiment of the present invention, the driving structure 23 of the present invention is mounted on the seat frame by a mounting bolt, and the driving structure 23 may be a motor or a hand wheel. The safety belt 13 is outwards discharged through forward rotation of the motor or the hand wheel, so that the length of the safety belt 13 positioned outside the child seat is prolonged, and the rotation of the motor or the hand wheel is stopped after the length is adjusted in place. The belt 13 is retracted inwards by the reverse rotation of the motor or the hand wheel, the belt 13 is wound on the rotating shaft 21, the length of the belt 13 positioned outside the child seat is shortened, and the motor or the hand wheel is stopped after the belt is adjusted in place. Preferably, the recliner 22 used in the present invention is a planetary gear type recliner which is rotated only by the driving of the driving structure 23, and the rest is in a locked state. When the rotation shaft 21 is mounted on the back frame 11, the driving structure 23 is mounted on the side plate 111 of the back frame 11; when the rotation shaft 21 is mounted on the seat cushion frame 12, the driving structure 23 is mounted on the side plate of the seat cushion frame 12.
As still another preferred embodiment of the present invention, as shown in fig. 5, the belt adjusting mechanism 20 of the present invention further comprises a belt rotating shaft 26 rotatably fitted around the rotating shaft 21 for winding the belt, the belt is wound around the belt rotating shaft 26, one end of the belt is fixed to the belt rotating shaft 26, the belt is wound around the belt rotating shaft 26, and the other end of the belt is wound around the stay 113 and then is threaded out from the back frame 11, as shown in fig. 1. A rotational return mechanism 26 for generating a rotational force after rotation is installed at one end of the seat belt shaft 26, and the seat belt is automatically retracted without being subjected to a force by the rotational return mechanism 26. Through the free rotation of the seat belt rotating shaft 26, the belt can directly extend out of the backrest framework 11 through external pulling, and the length of the belt is adjusted, so that the length adjustment of the belt is more convenient. After the tension applied to the outer webbing is released, the swiveling force of the swiveling reset mechanism 26 withdraws the webbing so that the webbing can tightly restrain the child occupant. Specifically, when the length of the seat belt is adjusted, an operator pulls the seat belt from the outside of the child seat and applies a pulling force to the seat belt, so that the seat belt rotating shaft 26 rotates relative to the rotating shaft 21, and further the seat belt wound on the seat belt rotating shaft 26 is discharged, thereby realizing the adjustment of the length of the seat belt, the rotation of the seat belt rotating shaft 26 drives the rotating reset mechanism 26 to rotate together, and the rotating reset mechanism 26 generates a turning force opposite to the rotating direction; after the safety belt is fixed and the pulling force applied to the safety belt is released, the rotary reset mechanism 26 reversely rotates under the action of the rotating force (the reverse rotation means that the direction is opposite to the rotating direction when the safety belt is released), and the safety belt rotating shaft 26 is driven to reversely rotate so as to retract the surplus released by the safety belt, so that the safety belt tightly restrains children passengers, and the effect of automatically tightening the safety belt is realized.
Further, the rotation return mechanism 27 is connected to the rotation shaft 21, and the seat belt is locked by rotating the rotation shaft 21 so that the rotation return mechanism 27 reaches the limit position. The rotation reset mechanism 27 has a certain rotation adjustment range, in the rotation adjustment range, the safety belt can be freely pulled out by overcoming the turning force of the rotation reset mechanism 27, and the locking effect can not meet the constraint requirement, so after the rotation reset mechanism 27 automatically withdraws the surplus discharged by the safety belt, the rotation shaft 21 is driven to rotate by the driving structure 23, the rotation direction of the rotation shaft 21 is the same as the reverse rotation direction of the rotation reset mechanism 27, namely, the rotation adjustment range of the rotation reset mechanism 27 is adjusted to the limit position by utilizing the rotation of the rotation shaft 21, namely, the rotation reset mechanism 27 can not be rotated and adjusted again, thereby fixing the rotating shaft 26 of the safety belt and realizing the locking of the safety belt.
In a preferred embodiment, as shown in fig. 6 and 7, the rotation return mechanism 27 includes a coil spring cover 271 fixed to one end of the webbing spool 26 and a coil spring 272 provided in the coil spring cover 271, one end of the coil spring 272 being fixedly connected to the coil spring cover 271, and the other end being fixedly connected to the spool 21. End plates 261 are fixedly arranged at two ends of the seat belt rotating shaft 26, and the seat belt wound on the seat belt rotating shaft 26 can be limited through the end plates 261; a coil spring cover 271 is fixedly attached to one of the end plates 261, the coil spring cover 271 being rotatable with the seat belt spool 26. The coil spring 272 is spirally provided with an inner end 2722 positioned at the inner part and an outer end 2721 positioned at the outer part, a fixed column 2711 is arranged in the coil spring cover 271, and the outer end 2721 of the coil spring 272 is fixedly connected to the fixed column 2711, so that when the seat belt is pulled out, the rotation of the seat belt rotating shaft 26 drives the coil spring cover 271 to rotate together, the outer end of the coil spring 272 rotates in the coil spring cover 271, and the rest part of the coil spring 272 is contracted to generate a rotating force opposite to the rotating direction of the coil spring cover 271. Thus, when the pulling force is released, the turning force drives the coil spring cover 271 to rotate reversely, and the seat belt rotating shaft 26 is driven to rotate reversely, thereby realizing the recovery of the seat belt. At the moment, the free telescopic adjustment of the safety belt is realized, and the safety belt can be automatically retracted. The inner end 2722 of the coil spring 272 is fixed to the rotation shaft 21, and the coil spring 272 is wound around the rotation shaft 21, and after the seat belt is regulated, the rotation shaft 21 is driven to rotate by the driving structure 23 in the same direction as the direction in which the coil spring cover 271 is reversely rotated, so that the inner end portion of the coil spring 272 is tightly wound around the rotation shaft 21, the coil spring 272 is tightened to the limit position, that is, the coil spring cover 271 and the seat belt rotation shaft 26 are fixed by the coil spring 272, thereby locking the seat belt.
The belt spindle 26 and the rotary reset mechanism 27 of the present invention may be provided one or two. When a seat belt shaft 26 and a rotary return mechanism 27 are provided, the seat belt is wound around the seat belt shaft 26 and then branched at the leading-out end to form two exposed portions outside the child seat. When two belt shafts 26 and a rotation return mechanism 27 are provided, one belt is wound around each belt shaft 26.
Further, as shown in fig. 5 and 9, the driving structure 23 may be a motor or a hand wheel. After the seat belt rotating shaft 26 completes the adjustment of the seat belt, the motor or the hand wheel is used for driving the transmission shaft 24 to further drive the rotating shaft 21 to rotate so as to realize additional tightening, and the seat belt is locked.
Referring to fig. 10 and 11, a square post 2311 is disposed on one side of the hand wheel, a square hole 2312 is formed in the square post 2311, the square hole 2312 is matched with the transmission shaft 24, and the transmission shaft 24 is inserted into the square hole 2312, so that the transmission shaft 24 can be driven to rotate through the square hole 2312 by rotating the hand wheel. In order to improve the connection firmness between the transmission shaft 24 and the square column 2311, the side wall of the square column 2311 is provided with a tooth hole 2313, the tooth hole 2313 is communicated with the square column 2312, the transmission shaft 24 is provided with a pawl 242, the pawl 242 is correspondingly arranged with the tooth hole 2313, and when the transmission shaft 24 is inserted into the square column 2312, the pawl 242 is clamped into the corresponding tooth hole 2313, so that the transmission shaft 24 is limited from being pulled out of the square column 2311.
As shown in fig. 12, the hand wheel includes a hand wheel seat 231, a hand wheel cover 232, a sliding pin 233, a spring 234 and a first coil spring 235, the hand wheel cover 232 and the hand wheel seat 231 are engaged with each other, a connecting square post 2311 is fixedly arranged at the outer side of the hand wheel seat 231 and connected with the transmission shaft 24, the hand wheel cover 232 is buckled on the hand wheel seat 231, and the hand wheel can be rotated by rotating the hand wheel cover 232.
Referring to fig. 13, a plurality of latches 2321 are preferably provided in the handwheel cover 232, and the latches 2321 are located on the same circumference, and oblique teeth are formed on the inner side of the top of the latches 2321. Referring to fig. 14, a sleeve 2314 is disposed in the hand wheel seat 231, a slot 2315 adapted to the latch 2321 is formed on a peripheral wall of the sleeve 2314, and when the hand wheel cover 232 is fastened to the hand wheel seat 231, the latch 2321 on the hand wheel cover 232 is fastened to the slot 2315 on the hand wheel seat 231, so that the hand wheel cover 232 and the hand wheel seat are fastened.
Further, a central post 2322 is further disposed in the handwheel cover 232, a notch is disposed on the central post 2322, the inner end side of the first coil spring 235 is clamped in the notch of the central post 2322, and the rest of the first coil spring 235 is wound around the central post 2322; an opening 2316 is formed in the sleeve 2314 of the pulley mount 231 corresponding to the outer end side of the first coil spring 235, and the outer end side of the first coil spring 235 is locked to the opening 2316. The length of the slot 2315 formed in the sleeve 2314 is greater than the length of the latch 2321, so that the hand wheel cover 232 can rotate relative to the hand wheel seat 231 within the length range of the slot 2315. The first coil spring 235 has a winding force in a counterclockwise direction in the state shown in fig. 14, when the hand wheel rotates in a clockwise direction in fig. 14, the hand wheel cover 232 can rotate to one end of the clamping groove 2315 relative to the hand wheel seat 231 when the rotating force is larger than the winding force of the first coil spring 235, the first coil spring 235 generates a winding force in a counterclockwise direction, when the rotating force contacts, the winding force of the first coil spring 235 drives the hand wheel cover 232 to rotate and return to the other end of the clamping groove 2315, and two end parts of the clamping groove 2315 form two limit positions. The pulley seat 231 is internally provided with a sliding pin 233 and a spring 234, the spring 234 is fixedly arranged in the pulley seat 231, a pin shaft of the sliding pin 233 is inserted into the spring 234, a cover cap at the top of the pin shaft abuts against the top of the spring 234, and the spring 234 applies a force to the cover cap of the sliding pin 233 in the direction of the hand cover 232. The handle cover 232 is provided with a lock 2323 corresponding to the sliding pin 233, when the handle cover 232 rotates relative to the handle seat 231, the first coil spring 235 generates a winding force, and when the handle cover rotates to a limit position, the elastic force of the spring 234 applied to the sliding pin 233 enables the sliding pin 233 to extend into the lock 2323, so that the handle cover 232 and the handle seat 231 are locked, and cannot rotate relative to each other. The locking is released, and the pulley cover 232 can be rotated to the other limit position by only pressing the sliding pin 233 toward the inside of the hand wheel and the winding force of the first coil spring 235.
The hand wheel of the invention provides a manual adjustment mode for the adjustment of the safety belt, and after the adjustment of the safety belt rotating shaft 26 and the rotating reset mechanism 27 is finished, the hand wheel is rotated to lock the safety belt. In the state shown in fig. 9, the hand wheel is rotated clockwise to normally store the safety belt, when the rotation force of the hand wheel cover is smaller than the winding force of the first coil spring, the hand wheel seat and the hand wheel cover rotate together, when the safety belt is tightened, the rotation force of the hand wheel cover is increased to be larger than the winding force, the hand wheel cover rotates relative to the hand wheel seat, when the hand wheel cover rotates to the limit position (namely, the latch reaches the limit position of the clamping groove), the sliding pin receives the thrust of the spring and is inserted into the locking opening to lock the hand wheel cover and the hand wheel seat, and therefore the safety belt is tightened in place by controlling the winding force. When the hand wheel cover needs to be unlocked, the hand wheel cover can be automatically reset by the rolling force of the first coil spring only by pressing the sliding pin.
As yet another preferred embodiment of the present invention, the belt adjustment mechanism 20 further includes an alarm coupled to the drive structure. The alarm is used for alarming and prompting the locking state. In one embodiment, the driving structure 23 is provided with a hall sensor, and the hall sensor detects whether the seat belt is tightened in place, and the detection principle of the hall sensor is that the current and the voltage are used for judging, so that the resistance is increased when the seat belt is tightened, and the current is also increased. In another embodiment, a force sensor is provided at the seat belt to detect the seat belt tightening force, and the detected seat belt tightening force is used to determine whether the seat belt is tightened in place. When the safety belt is not tightened in place, the Hall sensor or the force sensor controls the alarm to operate, and alarm prompt is carried out. The alarm can give an alarm prompt in the forms of sound, light, electricity or vibration, and the like, and can give an alarm prompt in the mode of sending information.
The child seat provided by the present invention will be described below.
The present invention also provides a child seat including a seat frame and a seat belt adjustment mechanism 20 mounted on the seat frame for adjusting the length of the seat belt, as shown in fig. 1.
The seat frame comprises a backrest frame 11 and a cushion frame 12 which are connected with each other, the bottom of the backrest frame 11 is connected with the cushion frame 12, the backrest frame 11 comprises two side plates 111 which are oppositely arranged, the tops of the two side plates 111 are connected with a top plate 112, a stay bar 113 is further arranged between the two side plates 111, and the stay bar 113 is arranged below the top plate 112. The stay 113 winds the leading end of the webbing 13, and guides the webbing. The seat cushion frame 12 also includes a pair of side plates disposed opposite each other.
The seat belt adjusting mechanism 20 is rotatably mounted between the two side plates 111 of the back frame 11 or rotatably mounted between the two side plates of the seat cushion frame 12, and the rotation process of the seat belt adjusting mechanism 20 realizes a stable locking function through the arranged recliner 22. The safety belt adjusting mechanism 20 is used for adjusting the length of the safety belt 13, and can ensure the stability of locking of the safety belt 13, and the adjustment is convenient. The specific structure of the belt adjusting mechanism 20 in the child seat of the present invention is the same as that of the above-described child seat, and the description of the above-described structure is specifically referred to and will not be repeated here.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (7)
1. A seat belt adjustment mechanism for a child seat, comprising:
the seat framework is rotatably arranged on the seat framework, and a safety belt is fixedly wound on the rotation shaft;
the angle adjuster is arranged at least one of two end parts of the rotating shaft, and the end part corresponding to the rotating shaft is rotatably arranged on the seat framework through the angle adjuster; and
the driving structure is in driving connection with the angle adjuster, and the angle adjuster is driven to rotate through the driving structure so as to drive the rotating shaft to rotate, so that the length adjustment of the safety belt is realized;
the angle adjuster comprises a fixed part fixedly arranged on the seat framework and a rotating part rotatably arranged on the fixed part, the rotating part is fixedly connected with the end part corresponding to the rotating shaft, and the rotating part is also connected with the driving structure;
the rotating part is provided with a polygonal hole;
the driving structure is connected with a transmission shaft which is matched with the polygonal hole, the transmission shaft penetrates through the polygonal hole, the transmission shaft is driven to rotate through the driving structure, and then the rotating part is driven to rotate through the polygonal hole;
the driving structure is a hand wheel and comprises a hand wheel seat, a hand wheel cover and a first coil spring, wherein the hand wheel seat is in driving connection with the angle adjuster, the hand wheel cover is clamped with the hand wheel seat, and the first coil spring is connected with the hand wheel seat and the hand wheel cover; the hand wheel seat is provided with a telescopic sliding pin, and the hand wheel cover is provided with a locking port matched with the sliding pin;
the hand wheel cover can rotate relative to the hand wheel seat, and when the hand wheel cover rotates relative to the hand wheel seat, the first coil spring generates a rolling force opposite to the rotating direction so as to reset the hand wheel cover; when the hand wheel cover rotates to the limit position, a sliding pin on the hand wheel seat is inserted into the locking opening to lock the hand wheel seat and the hand wheel cover.
2. The seat belt adjusting mechanism of the child seat according to claim 1, wherein both end portions of the rotation shaft are provided with recliner;
the transmission shaft penetrates through polygonal holes in the two angle adjusters and is partially arranged in the rotating shaft so as to synchronously drive the two angle adjusters to rotate.
3. The seat belt adjustment mechanism of claim 1, wherein the drive structure is a motor.
4. The belt adjusting mechanism of a child seat according to claim 1, further comprising a belt rotating shaft rotatably fitted around the rotating shaft to wind a seat belt, wherein one end of the belt rotating shaft is provided with a rotation resetting mechanism generating a turning force after rotation, the rotation resetting mechanism being connected to the rotating shaft, and locking the seat belt by rotating the rotating shaft such that the rotation resetting mechanism reaches an extreme position.
5. The belt adjustment mechanism of claim 4, wherein the rotational return mechanism comprises a coil spring cover secured to one end of the belt spindle and a coil spring disposed on the roll Huang Gaina, one end of the coil spring being fixedly connected to the coil spring cover and the other end being fixedly connected to the spindle.
6. The seat belt adjustment mechanism of the child seat according to claim 1, wherein the seat frame comprises a back frame and a seat cushion frame that are connected to each other;
the rotating shaft is rotatably arranged between two side plates of the backrest framework or between two side plates of the cushion framework.
7. A child seat, comprising:
a seat frame; and
a seat belt adjustment mechanism for a child seat as claimed in any one of claims 1 to 6 mounted on the seat frame for adjusting the length of the seat belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199746.8A CN108297746B (en) | 2018-03-09 | 2018-03-09 | Child seat and safety belt adjusting mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199746.8A CN108297746B (en) | 2018-03-09 | 2018-03-09 | Child seat and safety belt adjusting mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108297746A CN108297746A (en) | 2018-07-20 |
| CN108297746B true CN108297746B (en) | 2024-04-05 |
Family
ID=62849523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810199746.8A Active CN108297746B (en) | 2018-03-09 | 2018-03-09 | Child seat and safety belt adjusting mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108297746B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723039B (en) * | 2019-09-30 | 2021-05-25 | 江苏大学 | Force limiting type child safety seat |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310111A (en) * | 2000-02-21 | 2001-08-29 | 株式会社东海理化电机制作所 | Belt coiler |
| CN1490195A (en) * | 2002-10-11 | 2004-04-21 | ������������ʽ���� | Child seats |
| CN1915706A (en) * | 2005-08-18 | 2007-02-21 | 高田株式会社 | Child seat |
| CN204196734U (en) * | 2014-08-28 | 2015-03-11 | 广州中国科学院工业技术研究院 | Vehicle-mounted child safety seat |
| CN204801557U (en) * | 2015-07-02 | 2015-11-25 | 淮安西格尔汽车内饰件有限公司 | Car seat regulator installation component |
| CN205971212U (en) * | 2016-08-19 | 2017-02-22 | 高田（上海）汽配制造有限公司 | Spring limit power structure of safety belt |
| CN107364417A (en) * | 2017-07-25 | 2017-11-21 | 顾钰锋 | Comfort type car belt |
| CN107444333A (en) * | 2017-09-14 | 2017-12-08 | 上海沃雨电子科技有限公司 | A kind of safety belt controlling mechanism of child safety seat |
| CN208134146U (en) * | 2018-03-09 | 2018-11-23 | 上海沃雨电子科技有限公司 | Children's seat and its safety belt controlling mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030071511A1 (en) * | 2001-10-11 | 2003-04-17 | Stafford Daniel G. | Belt tensioning mechanism |
| WO2013082321A1 (en) * | 2011-11-30 | 2013-06-06 | Seatcure, Llc | Child carrier restraint system |
-
2018
- 2018-03-09 CN CN201810199746.8A patent/CN108297746B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310111A (en) * | 2000-02-21 | 2001-08-29 | 株式会社东海理化电机制作所 | Belt coiler |
| CN1490195A (en) * | 2002-10-11 | 2004-04-21 | ������������ʽ���� | Child seats |
| CN1915706A (en) * | 2005-08-18 | 2007-02-21 | 高田株式会社 | Child seat |
| CN204196734U (en) * | 2014-08-28 | 2015-03-11 | 广州中国科学院工业技术研究院 | Vehicle-mounted child safety seat |
| CN204801557U (en) * | 2015-07-02 | 2015-11-25 | 淮安西格尔汽车内饰件有限公司 | Car seat regulator installation component |
| CN205971212U (en) * | 2016-08-19 | 2017-02-22 | 高田（上海）汽配制造有限公司 | Spring limit power structure of safety belt |
| CN107364417A (en) * | 2017-07-25 | 2017-11-21 | 顾钰锋 | Comfort type car belt |
| CN107444333A (en) * | 2017-09-14 | 2017-12-08 | 上海沃雨电子科技有限公司 | A kind of safety belt controlling mechanism of child safety seat |
| CN208134146U (en) * | 2018-03-09 | 2018-11-23 | 上海沃雨电子科技有限公司 | Children's seat and its safety belt controlling mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108297746A (en) | 2018-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7201399B2 (en) | Four-point seat belt system with buckle-lowering belts | |
| US20050073187A1 (en) | Four-point seat belt system with buckle-lowering belts | |
| JP6096537B2 (en) | Mobile device | |
| JPH09272401A (en) | Seat belt retractor using ultrasonic motor | |
| US6676060B2 (en) | Motorized seat belt retractor | |
| KR20210039433A (en) | Load-bearing structural parts for vehicle seats | |
| US20090140559A1 (en) | Rear-seat occupant protection apparatus | |
| US5660444A (en) | Shoulder webbing retractor for a safety restraint system having a self-zeroing center of gravity assembly | |
| CN108297746B (en) | Child seat and safety belt adjusting mechanism thereof | |
| US10829085B2 (en) | Seat belt retractor | |
| WO1987006544A1 (en) | Retractor for seat belt of automatic/emergency lock type | |
| US5775618A (en) | Tension controlled seat belt retractor | |
| JP2009262811A (en) | Webbing retracting device | |
| US4685736A (en) | Infinitely positionable lock for reclining seat | |
| JP2533156Y2 (en) | Shoulder anchor height adjustment device | |
| JP2009262632A (en) | Webbing retractor | |
| US8662538B2 (en) | Belt retractor for a vehicle safety belt | |
| WO2022012463A1 (en) | Core wire transmission device for safety belt retractor and safety belt retractor | |
| JP2010111294A (en) | Seat belt device and retractor | |
| JPH037234Y2 (en) | ||
| CN208134146U (en) | Children's seat and its safety belt controlling mechanism | |
| US20070120000A1 (en) | Seat belt retractor including an energy absorbing device | |
| US5816522A (en) | Tension controlled seat belt retractor | |
| JP5216247B2 (en) | Seat belt retractor and seat belt device provided with the same | |
| JP2007237912A (en) | Seat belt system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |