CN107128279B - Rolling device - Google Patents
Rolling device Download PDFInfo
- Publication number
- CN107128279B CN107128279B CN201710475885.4A CN201710475885A CN107128279B CN 107128279 B CN107128279 B CN 107128279B CN 201710475885 A CN201710475885 A CN 201710475885A CN 107128279 B CN107128279 B CN 107128279B
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- limiting
- spring
- balance
- arm
- balance wheel
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention provides a retractor, wherein a balance limiting spring is arranged on the outer end face of a disc, and the balance limiting spring is arranged between a pressure spring support and a balance in a swinging way, namely, when the balance swings to be close to or far from the pressure spring support, only one end of the balance limiting spring is abutted against the pressure spring support or the balance. When the webbing is pulled out, the disc rotates and is propped against the balance wheel limiting spring by the pressure spring support, the second limiting end of the balance wheel limiting spring is separated from the swinging end of the balance wheel, and the balance wheel can swing freely to restore the locking function. When the belt is recovered, the second limiting end of the balance wheel limiting spring is propped against the balance wheel, the balance wheel is pushed to prop against the locking block, and the swing noise of the balance wheel in the running process of the vehicle is avoided. According to the invention, the balance wheel limiting spring is arranged, so that the balance wheel is separated from the balance wheel when the retractor works, the locking function of the balance wheel is guaranteed, and the balance wheel is limited when the retractor stops rotating, so that the noise in a vehicle caused by free swing of the balance wheel is avoided, and the comfort of a product is improved.
Description
Technical Field
The invention relates to the technical field of automobile accessories, in particular to a retractor.
Background
The retractor is a retractor with an emergency locking function and is a core component of an automobile safety belt.
The automobile seat safety belt retractor has one belt acceleration inducing part comprising one circular winding shaft and at least one ratchet wheel fixed to the end of the winding shaft, the circular winding shaft is inserted between the main boards on two sides of the winding bin, and the main boards are provided with locking parts comprising ratchet wheels and ratchet wheels.
As shown in fig. 1, fig. 1 is a schematic diagram of the internal structure of a retractor in the prior art.
The inside of the retractor is provided with a support 2 ' and a mandrel assembly 1 ' which are matched in a supporting way, the inside of the mandrel assembly 1 ' is provided with a balance wheel 3 ', the balance wheel 3 ' swings freely in a disc 4 ', and the balance wheel is supported by a balance wheel pressure spring 5 '. The bracket 2 'is provided with a vehicle sensing component 6' matched with the limiting teeth on the disc 4 'of the mandrel component 1', and the vehicle sensing component 6 'is tightly clamped with the disc 4' by pushing the vehicle sensing component 6 'through the inertia of the steel ball 7' in the vehicle sensing component. After the traditional safety belt is arranged on a vehicle body, the steel ball 7 'and the balance wheel 3' are in a relatively free state and are influenced by the running of the vehicle, and the steel ball and the balance wheel respectively collide with parts related to the structure of the traditional safety belt to generate sound, so that uncomfortable feeling is easily generated by users due to the interference sound.
Therefore, how to reduce noise interference of the inner structure of the retractor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a retractor to reduce noise interference of the internal structure of the retractor.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the coiler comprises a bracket, a mandrel assembly arranged in the bracket, a balance wheel arranged in a disc at the end part of the mandrel assembly, a balance wheel pressure spring elastically supporting the balance wheel and a pressure spring support supporting the balance wheel pressure spring, wherein the balance wheel pressure spring is arranged in the disc;
the balance wheel limiting spring is arranged on the outer end face of the disc and can rotate around the rotating shaft of the mandrel assembly, and the balance wheel limiting spring comprises a first limiting end propped against the pressure spring support when the webbing of the mandrel assembly is pulled out; a second limiting end against the swinging end of the balance wheel when the webbing is recovered;
the balance wheel limiting spring is arranged between the pressure spring support and the balance wheel in a swinging mode.
Preferably, in the above retractor, an end of the spindle assembly is provided with an end cap, and the mounting end of the balance limiting spring is provided in the end cap.
Preferably, in the above retractor, the balance limiting spring includes a limiting spring body having an open ring structure, two ends of the opening of the limiting spring body are respectively provided with a first limiting column and a second limiting column extending into the disc, and a chute for accommodating the balance limiting spring is provided in the end cover.
Preferably, in the retractor, a disc-shaped stop block pressed against the limiting spring body is further provided in the end cover, a clamping groove for accommodating the first limiting post and the second limiting post is provided on the disc-shaped stop block, and the disc-shaped stop block is rotatably arranged in the end cover.
Preferably, in the above retractor, a sink groove for accommodating the disc-shaped stop block is provided in the end cover, and a limit fixture block overlapping the edge of the disc-shaped stop block to limit the disc-shaped stop block and a groove provided along the radial direction of the sink groove are provided at the edge of the sink groove.
Preferably, in the above retractor, the retractor further comprises a vehicle-sensing limiting device for limiting the vehicle-sensing assembly on the bracket, wherein the vehicle-sensing limiting device comprises a connecting arm which is arranged on a core shaft sleeve of the core shaft assembly in a supporting way and extends out to the outer edge of the disc, and a limiting arm spring which is arranged at the swinging end of the connecting arm and is in compression or separation fit with the vehicle-sensing arm of the vehicle-sensing assembly;
the end cover is provided with a first limiting device for limiting the connecting arm when the connecting arm is pressed with the car sensing arm, and a second limiting device for limiting the connecting arm when the connecting arm is separated from the car sensing arm.
Preferably, in the above retractor, the connecting arm is disposed on an outer end face of the end cover, the end cover is provided with an arm-limiting spring swinging hole connected to the vehicle-sensing arm, and the first limiting device and the second limiting device are limiting plates disposed on an outer end face of the end face.
Preferably, in the retractor, the connecting arm comprises a connecting disc clamped on the core shaft sleeve, and a connecting rod sleeved on the outer ring of the connecting disc and fixedly connected with the arm limiting spring; the connecting end of connecting rod is including embracing locating first connecting portion and the second connecting portion of radial both sides of connection pad, first connecting portion with still be provided with the convex locking spring that locks to the clamping direction of two between the second connecting portion.
Preferably, in the retractor, the arm limiting spring is a circular arc-shaped spring piece arranged between the disc and the vehicle sensing arm, and the outer side of the spring piece is abutted against the end part of the vehicle sensing arm.
Preferably, in the retractor, the limiting plate is an annular limiting plate circumferentially arranged around the connecting arm, and the annular limiting plate is further provided with a cover plate covering the connecting arm.
The invention provides a retractor which comprises a bracket, a mandrel assembly arranged in the bracket, a balance wheel arranged in a disc at the end part of the mandrel assembly, a balance wheel pressure spring elastically supporting the balance wheel and a pressure spring support supporting the balance wheel pressure spring. The support is used for supporting the mandrel assembly, the mandrel assembly rotates to retract or pull the braid, a disc at the end part of the mandrel assembly is internally provided with a balance wheel, a balance wheel pressure spring and a pressure spring support which are matched with the action of the braid, and the mandrel assembly and the train sensing assembly are matched with each other to tightly clamp the retractor.
The balance wheel limiting spring is arranged on the outer end face of the disc and can rotate around the rotating shaft of the mandrel assembly, and the balance wheel limiting spring comprises a first limiting end propped against the pressure spring support when the webbing of the mandrel assembly is pulled out; a second limiting end which is propped against the swinging end of the balance wheel when the webbing is recovered; the balance wheel limiting spring is arranged between the pressure spring support and the balance wheel in a swinging way. Because the balance wheel can freely swing and is arranged in the disc, the balance wheel limiting spring is arranged on the outer end face of the disc, and the balance wheel limiting spring can swing and is arranged between the pressure spring support and the balance wheel, namely, when the balance wheel swings to be close to or far from the pressure spring support, only one end of the balance wheel limiting spring is abutted against the pressure spring support or the balance wheel. When the webbing is pulled out, the disc rotates and is propped against the balance wheel limiting spring by the pressure spring support, the second limiting end of the balance wheel limiting spring is separated from the swinging end of the balance wheel, and the balance wheel can swing freely to restore the locking function.
On the contrary, when the second limiting end of the balance wheel limiting spring is propped against the balance wheel, the balance wheel is pushed to prop against the locking block, so that the swing noise of the balance wheel is avoided in the running process of the vehicle. According to the invention, the balance wheel limiting spring is arranged for compressing the balance wheel, so that the balance wheel is separated from the balance wheel when the retractor works, the locking function of the balance wheel is guaranteed, and the balance wheel is limited when the retractor stops rotating, so that the noise in a vehicle caused by free swing of the balance wheel is avoided, and the comfort of a product is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the internal structure of a prior art retractor;
FIG. 2 is an exploded view of the internal structure of the retractor of the present invention;
FIG. 3 is a schematic view of the operating configuration of the spindle assembly and balance limiting spring of FIG. 2;
FIG. 4 is a schematic view of the connection of the balance limiting spring and the end cap of FIG. 1;
FIG. 5 is a schematic view of the arm limiting spring of FIG. 1;
fig. 6 is a schematic view of the reed of fig. 5.
Detailed Description
The invention discloses a retractor, which reduces noise interference of an internal structure of the retractor.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 2-4 show an exploded view of the internal structure of the retractor according to the present invention; FIG. 3 is a schematic view of the operating configuration of the spindle assembly and balance limiting spring of FIG. 2; FIG. 4 is a schematic view of the connection of the balance limiting spring and the end cap of FIG. 1; FIG. 5 is a schematic view of the arm limiting spring of FIG. 1; fig. 6 is a schematic view of the reed of fig. 5.
The invention provides a retractor which comprises a bracket 8, a mandrel assembly 1 arranged in the bracket 8, a balance wheel 11 arranged in a disc 13 at the end part of the mandrel assembly 1, a balance wheel pressure spring for elastically supporting the balance wheel and a pressure spring support 12 for supporting the balance wheel pressure spring, wherein the balance wheel pressure spring is arranged in the disc 13. The support 8 supports the mandrel assembly 1, the mandrel assembly 1 rotates to retract or pull out the braid, a disc 13 at the end part of the mandrel assembly 1, a balance wheel 11, a balance wheel pressure spring and a pressure spring support 12 which are matched with the action of the balance wheel on the braid are arranged in the disc 13, and the mandrel assembly 1 and the car feel assembly 9 are matched with each other to tightly clamp the retractor.
The balance limiting spring 5 is arranged on the outer end face of the disc 13 and can rotate around the rotating shaft of the mandrel assembly 1, and the balance limiting spring 5 comprises a first limiting end which is propped against the pressure spring support 12 when the webbing of the mandrel assembly is pulled out; a second limit end which abuts against the swinging end of the balance 11 when the webbing is recovered; balance limiting spring 5 is pivotally mounted between compression spring support 12 and balance 11. Since the balance 11 is arranged in the disc 13 in a freely swingable manner, the balance limiting spring 5 is arranged on the outer end face of the disc 13, and the balance limiting spring 5 is arranged in a swingable manner between the pressure spring support 12 and the balance 11, i.e. when the balance 11 swings close to or away from the pressure spring support 12, only one end of the balance limiting spring 5 abuts against the pressure spring support or the balance. The balance limiting spring 5 is propped against the pressure spring support 12 by the first limiting end, when the webbing is pulled out, the disc 13 rotates and is propped against the balance limiting spring 5 by the pressure spring support 12, the second limiting end is separated from the swinging end of the balance 11, and the balance 11 can swing freely, so that the locking function is restored.
On the contrary, when the second limiting end of the balance limiting spring 5 abuts against the balance 11, the balance 11 is pushed to abut against the locking block 14, and the swing noise of the balance 11 is avoided in the running process of the vehicle. According to the invention, the balance wheel limiting spring 5 for compressing the balance wheel 11 is arranged, so that the balance wheel limiting spring is separated from the balance wheel 11 to ensure the locking function of the balance wheel 11 when the retractor works, and the balance wheel 11 is limited when the retractor stops rotating, so that the noise in a vehicle caused by free swing of the balance wheel 11 is avoided, and the comfort of a product is improved.
In this case, an end cap 6 is provided at the end of the spindle assembly 1, and the mounting end of the balance limiting spring 5 is provided in the end cap 6. The rotation of balance limiting spring 5 is driven by the forward or reverse rotation of disc 13, by balance 11 or compression spring support 12, i.e. it is not synchronized with the rotation of spindle assembly 1, in order to reduce the complexity of the structure of rotation of balance limiting spring 5, the mounting end of balance limiting spring 5 is arranged in end cap 6.
In this case, in one embodiment, the balance limiting spring 5 includes a limiting spring body 53 with an annular structure, two ends of the opening of the limiting spring body 53 are respectively provided with a first limiting post 51 and a second limiting post 52 extending into the disc, and a chute for accommodating the balance limiting spring 5 is arranged in the end cover 6. The balance wheel limiting spring 5 is an open annular spring, a first limiting column 51 and a second limiting column 52 are arranged at the opening part of the limiting spring body 53, the first limiting column 51 and the second limiting column 52 extend into the disc 13 and are propped against the balance wheel 11 and the pressure spring support 12 in the rotating process. Since the balance limiting spring 5 has an open annular structure, when the first limiting post 51 or the second limiting post 52 is pressed, the spring restoring force of the balance limiting spring 5 is the restoring force of the limiting spring body 53 in the radial direction. Since the balance limiting spring 5 is required to rotate in the end cover 6 along with the rotation of the spindle assembly 1 by being pushed by the pressure spring support 12, a chute matched with the balance limiting spring 5 is arranged in the end cover 6. The slide groove may be provided as an annular groove for accommodating the annular structure of the balance limit spring 5, or may be provided as a circular countersink having the same diameter as the limit spring body 53.
Since the balance spring elastically supporting the balance 11 is provided between the spring supporter 12 and the balance 11, the first and second stopper posts 51 and 52 of the balance restriction spring 5 need to be stably supported. The supporting end surfaces of the balance wheel 11 and the first limiting post 51 are set to be arc-shaped end surfaces of the swinging end of the balance wheel 11, the pressure spring support 12 is extended with the extension seat 121, and the supporting end surfaces of the extension seat are propped against the second limiting post 52, so that stable support of the second limiting post 52 is realized. Preferably, balance limiting spring 5 is an open annular limiting spring made of steel wire, the diameter of balance limiting spring 5 is not more than phi 0.6, and the driving force of balance limiting spring 5 is not more than 7N.
In this case, in a specific embodiment, the end cover 6 is further provided with a disc-shaped stop block 4 that is crimped on the limiting spring body 53, the disc-shaped stop block 4 is provided with a clamping groove 41 that accommodates the first limiting post 51 and the second limiting post 52, and the disc-shaped stop block 4 is rotatably disposed in the end cover 6. Because balance wheel limiting spring 5 is open ring structure, when first spacing post 51 and second spacing post 52 are when receiving the extrusion, limit spring body 53 takes place deformation, deviate from in the spout on end cover 5 easily, set up the disc dog 4 of crimping on limit spring body 53 in end cover 5, the internal diameter of disc dog 4 is not less than the internal diameter of limit spring body 53, set up the clamping structure of clamping disc dog 4 in the end cover 6, because first spacing post 51 and second spacing post 52 set up in the open position of limit spring body 53, correspond, disc dog 4 corresponds first spacing post 51 and second spacing post 52 position and set up draw-in groove 41, the interval and the interval of first spacing post 51 and second spacing post 52 of draw-in groove 41 are the same, consequently promote first spacing post 51 or second spacing post 52 in-process, disc dog 4 can rotate in end cover 6 along with the rotation synchronization of balance wheel limiting spring 5.
Specifically, a sinking groove for accommodating the disc-shaped stop block 4 is arranged in the end cover 6, and the edge of the sinking groove is provided with a limiting clamping block 61 which is lapped on the edge of the disc-shaped stop block 4 to limit the disc-shaped stop block, and a groove 62 which is formed along the radial direction of the sinking groove. The sinking groove is a circular sinking groove corresponding to the outer diameter of the disc-shaped stop block 4, the inner wall of the circular sinking groove is contacted with the edge of the disc-shaped stop block 4, and the disc-shaped stop block 4 can be guaranteed to freely rotate in the sinking groove, so that the disc-shaped stop block 4 is prevented from being influenced by larger friction force to freely rotate the mandrel assembly 1. Meanwhile, the limit clamping blocks 61 are arranged on the edges of the sinking grooves, the disc-shaped stop blocks 4 are extruded into the sinking grooves in a pressing mode, and the limit clamping blocks 61 extend inwards in the radial direction of the sinking grooves to limit the axial end faces of the disc-shaped stop blocks 4. In order to realize the detachable disc-shaped stop block 4 installed in the sinking groove, the inner wall of the sinking groove is provided with a groove 62 which extends outwards along the radial direction of the groove, and the disc-shaped stop block 4 can be detached from the sinking groove by using tools such as a screwdriver through the groove 62.
In this case, the vehicle-sensing limiting device 3 further comprises a vehicle-sensing limiting device 9 for limiting the vehicle-sensing assembly 9 on the support 8, wherein the vehicle-sensing limiting device 3 comprises a connecting arm which is erected on the mandrel sleeve 15 of the mandrel assembly 1 and extends to the outer edge of the disc 13, and a limiting arm spring 36 which is arranged at the swinging end of the connecting arm and is in pressing or separating fit with the vehicle-sensing arm of the vehicle-sensing assembly 9. The end cover 6 is provided with a first limiting device for limiting the connecting arm when the connecting arm is pressed with the car sensing arm and a second limiting device for limiting the connecting arm when the connecting arm is separated from the car sensing arm.
The noise-generating structure within the retractor includes a balance 11 structure and a vehicle feel assembly 9. The balance 11 is pressed by the balance limiting spring 5, and the noise generated by the balance limiting spring can be effectively controlled. The sensitive ball in the vehicle sensing assembly 9 pushes the vehicle sensing arm to contact with the outer edge of the disc 13 in an inertial state to generate noise.
The car sense arm limits the car sense assembly 9 through the car sense limiting device 3 and comprises a connecting arm and an arm limiting spring, wherein the connecting arm support is arranged on a core shaft sleeve of the mandrel assembly, and can swing at a certain angle through the driving of the core shaft sleeve 15. The swing end of the connecting arm extends to the outer edge of the disc 13, the end part of the connecting arm is provided with an arm limiting spring 16, and the connecting arm is provided with a first swing position for pressing the car sensing arm during swing and a second swing position for limiting the swing position after the rotation of the connecting arm is separated from the car sensing arm. The connecting arm support is arranged on the core shaft sleeve 15 and extends out to the outer end face of the disc 13, and the first swing position and the second swing position of the connecting arm are limited through a first limiting device and a second limiting device which are arranged on the end cover 6. In this embodiment, the mandrel assembly 1 is in sliding contact with the connecting arm, and the mandrel assembly 1 and the connecting arm are free to rotate after the connecting arm is driven to swing.
Specifically, the connecting arm is disposed on an outer end surface of the end cover 6, the end cover 6 is provided with an arm limiting spring swinging hole 64 communicated to the vehicle sensing arm, and the first limiting device and the second limiting device are limiting plates 65 disposed on the outer end surface of the end cover. The connecting arm is provided on the outer end face of the end cap 6 due to the compactness of the structure between the inside of the end cap 6 and the disk 13. The core sleeve 15 extends out of the outer end surface of the end cover 6, the connecting arm slides on the surface of the end cover 6, and meanwhile, as the arm limiting spring is required to be propped against the vehicle sensing arm, an arm limiting spring swinging hole 64 penetrating through the thickness direction of the end cover 6 is formed in the end cover 6, and the arm limiting spring 36 swings in the swinging stroke of the arm limiting spring swinging hole 64. Corresponding to the swing stroke of the arm limiting spring 36, a first limiting device and a second limiting device are arranged on the outer end face of the end cover 6, and the limiting positions of the first limiting device and the second limiting device are the swing positions corresponding to the connecting arms when the arm limiting spring 36 swings to the two ends of the arm limiting spring swing hole 64.
In this case, in one embodiment, the connecting arm includes a connecting disc 31 clamped on the mandrel sleeve 15, and a connecting rod 32 sleeved on the outer ring of the connecting disc 31 and fixedly connected with an arm limiting spring 36; the connecting end of the connecting rod 32 comprises a first connecting part 33 and a second connecting part 34 which are arranged on two radial sides of the connecting disc 31 in an embracing way, and an arc locking spring 35 which locks the clamping directions of the first connecting part 33 and the second connecting part 34 is arranged between the first connecting part and the second connecting part. The connecting structure of the connecting arm is provided with a connecting disc 31 and a connecting rod 32, wherein the connecting disc 31 is connected with the mandrel sleeve 15; the connection pad 15 is by connecting rod 32 rigid coupling, connecting rod 32 and the link of connection pad 31 include embracing first connecting portion 33 and the second connecting portion 34 of locating the radial both sides of connection pad 31, by first connecting portion 33 and the radial edge chucking of connection pad 31 of second connecting portion 34, simultaneously, in order to avoid the connection pad 31 to rotate many times with dabber cover 15 and cause connection pad 31 and first connecting portion 33 and second connecting portion 34 to go on unable effectual chucking structure of formation between, carry out the locking by convex locking spring 35 to first connecting portion 33 and second connecting portion 34, the first locking end and the first connecting portion 33 of locking spring 35 are connected, the second locking end is connected with second connecting portion 34, the elastic force direction of locking spring 35 is followed the embracing direction of first connecting portion 33 and second connecting portion 34, can set up the locking force size of first connecting portion 33 and second connecting portion 34 to connection pad 31, make core cover 15 take place the rotation displacement of certain angle between connection pad 31 and the connecting rod 32 when driving connection pad 31 and rotation, thereby reduce connecting rod 32 and first stop device's embracing force, the stability of bump stop arm, the structure stability of stop lever 32 is improved. The locking spring 35 is an arc spring wire with a semicircular structure, and the first connecting part 33 and the second connecting part 34 are provided with a limiting bracket 37 limited by the locking spring 35 to limit the axial swing of the locking spring 35.
In this embodiment, the arm limiting spring 36 is a circular arc reed arranged between the disc 13 and the vehicle sensing arm, and the outer side of the reed is propped against the end part of the vehicle sensing arm. The limiting arm spring 36 extends to the outer edge of the disc 13 and is a circular arc reed, the limiting arm spring 36 is positioned between the disc 13 and the vehicle-sensing arm, and interference between the limiting arm spring 36 and limiting teeth on the outer edge of the disc 13 during swinging is avoided. The arc-shaped structure of the simultaneous limiting arm spring 36 is characterized in that the arc bottom of the arc-shaped structure abuts against the end part of the vehicle sensing arm, so that the compression of the limiting arm spring 36 to the vehicle sensing arm is realized. The connecting rod 32 is of an injection molding structure, the arm limiting spring 36 is of a metal structure, the arm limiting spring 36 comprises an ear portion 361 for supporting the arm limiting spring, and the ear portion 36 of the arm limiting spring 36 is connected with the connecting rod 32 into a whole through injection molding.
In this case, the limiting plate 63 is an annular limiting plate circumferentially disposed on the connecting arm, and the annular limiting plate is further provided with a cover plate 7 covering the connecting arm. Because offer the limit arm spring swing hole 64 that runs through its thickness direction on the end cover 7, in order to improve the security of the inside part of disc 13, avoid outside dust to fall into inside the disc 13, set up limiting plate 63 into the annular limiting plate of encircling the outer terminal surface round of end cover 6, the inner wall of annular limiting plate is spacing to the swing of linking arm to protect the linking arm. The annular limiting plate is provided with a cover plate 7 so as to place the inner parts of the retractor in a sealed environment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The coiler is characterized by comprising a bracket, a mandrel assembly arranged in the bracket, a balance wheel arranged in a disc at the end part of the mandrel assembly, a balance wheel pressure spring elastically supporting the balance wheel and a pressure spring support supporting the balance wheel pressure spring, wherein the balance wheel pressure spring is arranged in the disc;
the balance wheel limiting spring is arranged on the outer end face of the disc and can rotate around the rotating shaft of the mandrel assembly, and the balance wheel limiting spring comprises a first limiting end propped against the pressure spring support when the webbing of the mandrel assembly is pulled out; a second limiting end against the swinging end of the balance wheel when the webbing is recovered;
the balance wheel limiting spring is arranged between the pressure spring support and the balance wheel in a swinging mode.
2. The retractor according to claim 1, wherein an end of said spindle assembly is provided with an end cap, and wherein a mounting end of said balance limiting spring is provided within said end cap.
3. The retractor according to claim 2, wherein the balance limiting spring comprises a limiting spring body with an annular opening structure, a first limiting column and a second limiting column extending into the disc are respectively arranged at two ends of the opening of the limiting spring body, and a sliding groove for accommodating the balance limiting spring is arranged in the end cover.
4. The retractor according to claim 3, wherein a disc-shaped stopper crimped to the limiting spring body is further provided in the end cover, a clamping groove for accommodating the first limiting post and the second limiting post is provided in the disc-shaped stopper, and the disc-shaped stopper is rotatably provided in the end cover.
5. The retractor according to claim 4, wherein a sink groove for accommodating the disc-shaped stopper is provided in the end cover, and a limit block overlapping the edge of the disc-shaped stopper to limit the same is provided at the edge of the sink groove, and a groove is provided along the radial direction of the sink groove.
6. The retractor according to claim 2, further comprising a vehicle-sensing limiting device for limiting the vehicle-sensing assembly on the support, wherein the vehicle-sensing limiting device comprises a connecting arm which is arranged on a core shaft sleeve of the core shaft assembly in a supporting mode and extends out to the outer edge of the disc, and a limiting arm spring which is arranged at the swinging end of the connecting arm and is in pressing or separating fit with the vehicle-sensing arm of the vehicle-sensing assembly;
the end cover is provided with a first limiting device for limiting the connecting arm when the connecting arm is pressed with the car sensing arm, and a second limiting device for limiting the connecting arm when the connecting arm is separated from the car sensing arm.
7. The retractor according to claim 6, wherein the connecting arm is disposed on an outer end surface of the end cover, the end cover is provided with an arm-limiting spring swinging hole communicated to the vehicle-sensing arm, and the first limiting device and the second limiting device are limiting plates disposed on the outer end surface of the end surface.
8. The retractor according to claim 7, wherein the connecting arm comprises a connecting disc clamped on the core sleeve, and a connecting rod sleeved on the outer ring of the connecting disc and fixedly connected with the arm limiting spring; the connecting end of connecting rod is including embracing locating first connecting portion and the second connecting portion of radial both sides of connection pad, first connecting portion with still be provided with the convex locking spring that locks to the clamping direction of two between the second connecting portion.
9. The retractor according to claim 6, wherein said arm limiting spring is a circular arc-shaped spring piece provided between said disc and said feel arm, an outer side of said spring piece being abutted against an end portion of said feel arm.
10. The retractor of claim 7, wherein the limiting plate is an annular limiting plate circumferentially disposed around the connecting arm, and a cover plate is further disposed on the annular limiting plate and covers the connecting arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475885.4A CN107128279B (en) | 2017-06-21 | 2017-06-21 | Rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475885.4A CN107128279B (en) | 2017-06-21 | 2017-06-21 | Rolling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107128279A CN107128279A (en) | 2017-09-05 |
| CN107128279B true CN107128279B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710475885.4A Active CN107128279B (en) | 2017-06-21 | 2017-06-21 | Rolling device |
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| CN (1) | CN107128279B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466044B (en) * | 2018-03-13 | 2020-04-10 | 重庆光大产业有限公司 | Assembling equipment for anti-locking assembly at front end of retractor |
| CN113561930B (en) * | 2021-09-01 | 2022-10-11 | 重庆光大产业有限公司 | Split structural safety belt retractor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100258326B1 (en) * | 1998-05-18 | 2000-08-01 | 이형찬 | Retractor for vehicle |
| DE10236858B4 (en) * | 2002-08-07 | 2004-06-09 | Takata-Petri (Ulm) Gmbh | belt device |
| DE102008036647A1 (en) * | 2007-11-28 | 2009-06-04 | C. Rob. Hammerstein Gmbh & Co. Kg | Wobble joint fitting for a vehicle seat comprises a spring having a support region which divides the spring into two regions |
| JP5706757B2 (en) * | 2011-05-25 | 2015-04-22 | タカタ株式会社 | Seat belt retractor and seat belt device using the same |
| JP5941456B2 (en) * | 2013-12-27 | 2016-06-29 | オートリブ ディベロップメント エービー | Seat belt retractor |
| CN106364449B (en) * | 2016-09-29 | 2018-11-30 | 延锋百利得（上海）汽车安全系统有限公司 | A kind of automobile safety belt retractor |
| CN207141005U (en) * | 2017-06-21 | 2018-03-27 | 重庆光大产业有限公司 | Coiler |
-
2017
- 2017-06-21 CN CN201710475885.4A patent/CN107128279B/en active Active
Also Published As
| Publication number | Publication date |
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| CN107128279A (en) | 2017-09-05 |
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Inventor after: Han Yujun Inventor before: Han Yujun Inventor before: Han Yang Inventor before: Zhou Zhibiao |
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