CN211001240U - Retractor spindle assembly with force limiting stop function and safety belt retractor - Google Patents
Retractor spindle assembly with force limiting stop function and safety belt retractor Download PDFInfo
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- CN211001240U CN211001240U CN201921737944.1U CN201921737944U CN211001240U CN 211001240 U CN211001240 U CN 211001240U CN 201921737944 U CN201921737944 U CN 201921737944U CN 211001240 U CN211001240 U CN 211001240U
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Abstract
The application relates to the technical field of automobile safety belts, in particular to a retractor spindle assembly with a force limiting stop function and a safety belt retractor. The core shaft assembly of the winding machine with the force limiting stopping function comprises a winding barrel, a force limiting rod, a stop nut, a force limiting head and a shaft head; the force limiting head is connected with the shaft head, the stop nut is connected with the winding barrel, and the force limiting head is connected with the stop nut through threads; one end of a force limiting rod positioned in the furling drum is connected with the force limiting head, and the other end of the force limiting rod is connected with the furling drum. When the automobile is collided, the safety mesh belt can be continuously pulled out after the force limiting function of the winding drum is started; at the moment, the furling barrel rotates, the stop nut also rotates along with the furling barrel and moves towards the root direction of the external thread connecting part on the force limiting head until the stop nut reaches the root of the force limiting head, the stop nut cannot continue to move forwards, the rotation is stopped along with the stop nut, the furling barrel is forced to stop rotating, the safety mesh belt cannot continue to be pulled out, and therefore the force limiting stop function of the mandrel component of the furling barrel is achieved.
Description
Technical Field
The utility model belongs to the technical field of the car blet technique and specifically relates to a roll-up device mandrel subassembly and safety belt coiler with limit for force stop function is related to.
Background
In the existing force-limiting safety belt, when a collision accident occurs, a pretensioner is started to prevent a safety webbing belt from being pulled out from a retractor, so that the body of a passenger is restrained; under the action of impact force and human inertia, acting force on the safety braid is increased, so that the torque of a force limiting rod in the retractor is increased, and when the torque reaches the starting torque of the force limiting rod, the safety braid can be continuously pulled out, so that the impact of the safety braid on the chest of a passenger is buffered; however, after the force limiting rod is started, the safety webbing can be pulled out all the time, so that the body of the passenger cannot be effectively restrained, and the passenger may continuously collide with a front seat, a steering wheel or an instrument panel and other hard objects, so that the passenger is injured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a roll-up ware mandrel subassembly and safety belt coiler with limit force stop function to solve to a certain extent among the prior art the difficult technical problem who controls its and stop after the start of coil-up ware limit force function.
The utility model provides a core shaft assembly of a winding machine with force limiting and stopping functions, which comprises a winding cylinder, a force limiting rod, a stop nut, a force limiting head and a shaft head; one end of the force limiting head is connected with the shaft head, and an external thread connecting part is arranged on the outer wall of the other end of the force limiting head; the stop nut is positioned at one end, facing the shaft head, of the furling drum and is connected with the furling drum, and an internal thread connecting part matched with the external thread connecting part is arranged on the inner wall of the stop nut; the stop nut is in threaded connection with the force limiting head; a stopping part is arranged on the outer wall of the force limiting head, and when the stop nut is screwed to the root part of the external thread connecting part, the stop nut can abut against the stopping part; the force limiting rod is located in the furling drum, one end of the force limiting rod is connected with the end of the furling drum, and the other end of the force limiting rod is connected with the force limiting head.
Furthermore, a connecting part is arranged on the end face of one end, facing the furling drum, of the shaft head, a first clamping groove is formed in the connecting part, and a first clamping part is arranged on the end face of one end, facing the shaft head, of the force limiting head; the first clamping portion is inserted into the first clamping groove, so that the force limiting head is clamped with the shaft head.
Furthermore, a protrusion is arranged on the groove wall of the first clamping groove.
Further, the outer wall of the first clamping portion protrudes out of the external thread connecting portion to form the stopping portion.
Furthermore, a second clamping groove is formed in the inner wall of one end, facing the shaft head, of the furling drum, and a second clamping part is arranged on the outer wall of the stop nut; the second clamping portion extends into the second clamping groove, so that the stop nut is clamped with the furling drum.
Furthermore, a step part is further arranged on the end face, facing the shaft head, of the furling drum, and the stop nut can extend into the step part and abut against the step surface of the step part.
Furthermore, a first spline groove is formed in the end face, facing one end of the winding drum, of the force limiting head; one end of the force limiting rod, which is connected with the force limiting head, is provided with a first spline matched with the first spline groove, and the first spline is inserted into the first spline groove, so that the force limiting rod is connected with the force limiting head.
Furthermore, a second spline is arranged at one end of the limiting rod, which is connected with the furling drum, and a second spline groove matched with the second spline is arranged at the end of the furling drum, which is connected with the limiting rod; and the second spline is inserted into the second spline groove, so that the force limiting rod is connected with the furling drum.
Further, the device also comprises a ball wheel; the ball wheel is positioned between the shaft head and the furling drum, one end of the ball wheel is connected with the shaft head, and the other end of the ball wheel is connected with the furling drum; the connecting portion with first joint portion all is located in the ball wheel, and with ball wheel looks joint.
The utility model also provides a safety belt coiler, including above-mentioned arbitrary any the roll-up device core subassembly that has the limit for force stop function.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a core shaft assembly of a winding machine with force limiting and stopping functions, which comprises a winding drum, a force limiting rod, a stop nut, a force limiting head and a shaft head; the force limiting head and the stop nut are positioned between the furling drum and the shaft head, wherein the force limiting head is connected with the shaft head, and the stop nut is connected with the furling drum; the limit nut and the limit nut can be connected together through threads, so that the furling drum is connected with the shaft head together through screwing the limit nut on the external thread connecting part of the limit nut. During initial assembly, the stop nut is arranged at a first position of the force limiting head, and a distance is reserved between the stop nut and the root of the external thread connecting part; at the moment, the winding drum and the stop nut can still be rotated, so that the winding drum and the stop nut rotate and move towards the root part close to the external thread connecting part along the length direction of the external thread connecting part, and the winding drum and the stop nut cannot move forwards until the winding drum and the stop nut reach the root part of the external thread connecting part. The force limiting rod is located the winding drum, one end of the force limiting rod is connected with the end of the winding drum, and the other end of the force limiting rod is connected with the force limiting head and further connected with the shaft head.
When an automobile collides, the force limiting function of the retractor is started, the shaft head is locked, the safety braid stops being pulled out of the winding drum, but due to impact force and inertia of a human body, the force acting on the safety braid is continuously increased, the torque of the force limiting rod in the winding drum is gradually increased, after the torque reaches the starting torque of the force limiting rod, the force limiting rod starts to rotate with relatively constant torque, the winding drum rotates along with the force limiting rod, the winding drum does not limit the pulling-out of the safety braid any more, and therefore the acting force of the safety braid on the human body is relieved; at the moment, along with the rotation of the winding drum, the stop nut also rotates along with the winding drum and moves towards the root of the external thread connecting part on the force limiting head, the stop nut cannot continue to move forwards until reaching the root of the force limiting head, and the rotation also stops along with the stop nut, so that the winding drum stops rotating, the safety mesh belt cannot be continuously pulled out, and the force limiting stop function of the core shaft assembly of the winding drum is realized.
The utility model also provides a safety belt retractor, include the roll-up device axle subassembly that has limit force stop function, therefore safety belt retractor also has the beneficial effect of the roll-up device axle subassembly that has limit force stop function.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structural diagram of a core assembly of a roll-up device having a force-limiting stopping function according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a core assembly of a roll-up device having a force-limiting stopping function according to an embodiment of the present invention after disassembling components;
fig. 3 is a schematic structural diagram of a spindle head of a spindle assembly of a roll-up device having a force-limiting stopping function according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a force limiting head of a core assembly of a roll-up device having a force limiting stop function according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a roll-up drum and a stop nut of a roll-up drum spindle assembly with a force-limiting stopping function according to an embodiment of the present invention.
Reference numerals:
1-a winding drum, 11-a second clamping groove, 12-a step part, 2-a force limiting rod, 3-a stop nut, 31-an internal thread connecting part, 32-a second clamping part, 4-a force limiting head, 41-an external thread connecting part, 42-a first clamping part, 43-a stopping part, 5-a shaft head, 51-a connecting part, 52-a first clamping groove, 53-a bulge and 6-a ball wheel.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A retractor spindle assembly and a seatbelt retractor having a force limiting stop function according to some embodiments of the present application will be described with reference to fig. 1 to 5.
The application provides a mandrel assembly of a winding machine with a force limiting stop function, which comprises a winding drum 1, a force limiting rod 2, a stop nut 3, a force limiting head 4 and a mandrel head 5 as shown in figures 1 to 5; one end of the force limiting head 4 is connected with the shaft head 5, and the outer wall of the other end of the force limiting head 4 is provided with an external thread connecting part 41; the stop nut 3 is positioned at one end of the winding drum 1 facing the shaft head 5 and is connected with the winding drum 1, and the inner wall of the stop nut 3 is provided with an internal thread connecting part 31 matched with the external thread connecting part 41; the stop nut 3 is in threaded connection with the force limiting head 4; the force limiting rod 2 is located in the winding drum 1, one end of the force limiting rod 2 is connected with the end of the winding drum 1, and the other end of the force limiting rod 2 is connected with the force limiting head 4.
The core shaft assembly of the winding machine with the force limiting and stopping function comprises a winding drum 1, a force limiting rod 2, a stop nut 3, a force limiting head 4 and a shaft head 5; the force limiting head 4 and the stop nut 3 are positioned between the furling drum 1 and the shaft head 5, wherein the force limiting head 4 is connected with the shaft head 5, and the force limiting head 4 can rotate along with the shaft head 5; the stop nut 3 is connected with the winding drum 1, and the stop nut 3 can rotate along with the winding drum 1; the end, facing the winding drum 1, of the force limiting head 4 is provided with an external thread connecting portion 41, the inner wall of the stop nut 3 is provided with an internal thread connecting portion 31, the internal thread connecting portion 31 of the stop nut 3 is matched with the external thread connecting portion 41 of the force limiting head 4, so that the stop nut 3 and the force limiting head 4 can be connected together through threads, and the winding drum 1 and the shaft head 5 are connected together by screwing the stop nut 3 on the external thread connecting portion 41 of the force limiting head 4. The outer wall of the force limiting head 4 is further provided with a stopping portion 43, and the stopping portion 43 is located at the root of the external thread connecting portion 41, when the stop nut 3 is screwed to the root of the external thread connecting portion 41, one end of the stop nut 3 abuts against the stopping portion 43, and cannot rotate continuously, so that the winding drum 1 is forced to stop rotating along with the stopping portion. The force limiting rod 2 is located the winding drum 1, one end of the force limiting rod 2 is connected with the end of the winding drum 1, and the other end of the force limiting rod 2 is connected with the force limiting head 4 and further connected with the shaft head 5.
It should be noted that, during initial assembly, the stop nut 3 and the force limiting head 4 are installed, the stop nut 3 is installed at the first position of the force limiting head 4, and a certain distance is left from the root of the external thread connecting part 41; at this time, the winding drum 1 and the stop nut 3 can still be rotated, so that the winding drum 1 and the stop nut 3 rotate and move towards the root part close to the external thread connecting part 41 along the length direction of the external thread connecting part 41 until one end of the stop nut 3 abuts against the stopping part 43 and then stops rotating.
When an automobile collides, the force limiting function of the retractor is started, the spindle head 5 is locked, the safety braid stops being pulled out of the winding drum 1, but due to impact force and inertia of a human body, the force acting on the safety braid and the winding drum 1 is continuously increased, the torque on the force limiting rod 2 inside the winding drum 1 is gradually increased, when the torque reaches the starting torque of the force limiting rod 2, the winding drum 1 rotates, the force limiting rod 2 is twisted therewith, the safety braid can be continuously pulled out along with the rotation of the winding drum, so that the acting force of the safety braid on the human body is relieved, but in order to ensure the protective effect of the safety braid on the human body, the pulling-out length of the safety braid is limited, and therefore, the winding drum 1 stops rotating after rotating for a certain number of turns; the winding drum 1 is connected with the force limiting head 4 through the stop nut 3, along with the rotation of the winding drum 1, the stop nut 3 rotates on the force limiting head 4 and moves towards the root direction of the external thread connecting part 41 on the force limiting head 4 until the stop nut 3 reaches the root of the force limiting head 4 and abuts against the stopping part 43, the stop nut 3 cannot continue to rotate, the winding drum 1 is forced to stop rotating along with the stop nut, and therefore the safety mesh belt cannot be continuously pulled out, and the force limiting stopping function of the winding drum component core is achieved.
The force limiting head 4 which is detachably connected is arranged on the shaft head 5, the stop nut 3 which is detachably connected is arranged on the winding drum 1, and the connection between the winding drum 1 and the shaft head 5 is realized through the threaded connection between the force limiting head 4 and the stop nut 3; when the vehicle collides, and the force limit of the coiler mandrel component stops, a large interaction force exists between the stop nut 3 and the force limit head 4, so that the coiler mandrel component is easy to damage, and the dismountable stop nut 3 and the force limit head 4 are arranged, so that the replacement and maintenance of parts of the coiler mandrel component are facilitated.
It should be noted that the distance that the safety webbing can be pulled out can be controlled by adjusting the initial position at which the stopper nut 3 is mounted on the male screw connecting portion 41 of the stopper head 4 and adjusting the number of turns of the stopper nut 3 and the take-up drum 1 that can still be rotated.
In one embodiment of the present application, preferably, as shown in fig. 3 and 4, a connecting portion 51 is provided on an end surface of the spindle nose 5 facing one end of the roll-up drum 1, and the connecting portion 51 is provided with a first clamping groove 52; a first clamping part 42 is arranged on the end surface of one end of the force limiting head 4 facing the shaft head 5; the first clamping part 42 is inserted into the first clamping groove 52, so that the force limiting head 4 is clamped with the shaft head 5.
In the embodiment, the end surface of one end of the spindle nose 5 facing the winding barrel 1 is provided with a connecting part 51, and the connecting part 51 is provided with a first clamping groove; limiting head 4 is provided with first joint portion 42 on the terminal surface of the one end of spindle nose 5, and first joint portion 42 can insert first joint inslot to with limiting head 4 and 5 joints of spindle nose together, make limiting head 4 and spindle nose 5 can rotate in step or stop.
Preferably, at least two first clamping grooves are formed in the connecting portion 51 of the shaft head 5 along the circumferential direction of the connecting portion, and correspondingly, two or more first clamping portions 42 are arranged on the force limiting head 4, so that the force limiting head 4 and the shaft head 5 are stably and firmly clamped together by inserting the first clamping portions 42 into the corresponding first clamping grooves.
In one embodiment of the present application, it is preferable that a projection 53 is provided on a groove wall of the first catching groove 52, as shown in fig. 3.
In this embodiment, the groove walls on both sides of the first clamping groove 52 are provided with protrusions 53 facing the inside of the first clamping groove 52, the protrusions 53 are in the shape of a bar, and the bar-shaped protrusions 53 extend along the length direction of the connecting portion 51; when the first catching portion 42 is inserted into the first catching recess 52, the protrusion 53 is squeezed therebetween; so that the first catching portion 42 can be tightly inserted into the inside of the first catching groove 52 to stably couple the stub shaft 5 and the force limiter head 4 together.
In one embodiment of the present application, preferably, as shown in fig. 4, an outer wall of the first clamping portion 42 protrudes out of the external thread connecting portion 41 to form a stopping portion 43.
In this embodiment, one end of the force-limiting head 4 is an external thread connecting portion 41, and the other end is provided with a first clamping portion 42, and one end of the first clamping portion 42 facing the external thread connecting portion 41 is located at the root of the external thread connecting portion 41, and the outside of the first clamping portion 42 protrudes from the external thread connecting portion 41 to form a stopping portion 43; therefore, when the stop nut 3 is screwed to the root of the external thread connecting part 41, the stop nut 3 abuts against the first clamping part 42 and cannot rotate continuously, so that the winding drum 1 is forced to stop rotating along with the stop nut, the safety webbing cannot be pulled out continuously, and the force limiting and stopping function of the winding drum mandrel assembly is realized.
It should be noted that the stopping portion 43 may also be a limiting protrusion disposed on the outer wall of the force limiting head 4, and the limiting protrusion is located at the root of the external thread connecting portion 41; when the stop nut 3 is screwed to the root of the external thread connecting part 41, the stop nut 3 abuts against the limit projection to stop rotating.
In one embodiment of the present application, preferably, as shown in fig. 5, a second clamping groove 11 is provided on the inner wall of the roll-up drum 1 facing the end of the spindle head 5; be provided with second joint portion 32 on the outer wall of stop nut 3, second joint portion 32 stretches into in second joint recess 11, makes stop nut 3 and the joint of a roll-up 1 looks.
In this embodiment, a second clamping groove 11 is formed in an inner wall of one end of the furling drum 1 facing the spindle nose 5, correspondingly, a second clamping portion 32 is formed in an outer wall of the stop nut 3, and the second clamping portion 32 is matched with the second clamping groove 11, so that the second clamping portion 32 can be inserted into the second clamping groove 11; therefore, the stop nut 3 and the winding drum 1 are clamped together, and the stop nut 3 and the winding drum 1 can synchronously rotate or stop.
In one embodiment of the present application, preferably, as shown in fig. 5, a step portion 12 is provided on an end surface of the roll-up drum 1 facing the spindle head 5, and the stop nut 3 can extend into the step portion 12 and abut against a step surface of the step portion 12.
In this embodiment, a stepped portion 12 is disposed on an end surface of the roll-up barrel 1 facing the spindle nose 5, and when the retaining nut 3 is mounted on the roll-up barrel 1, the retaining nut 3 can extend into the stepped portion 12, abut against the end surface of the stepped portion 12, and cooperate with the engagement of the second engaging portion 32 and the second engaging recess 11, so that the retaining nut 3 is stably and firmly mounted on the roll-up barrel 1, and the two can synchronously rotate or stop.
In one embodiment of the present application, preferably, as shown in fig. 2, a first spline groove is opened on an end surface of the force limiting head 4 facing one end of the take-up drum 1; one end that the force limiting rod 2 is connected with the force limiting head 4 is provided with the first spline with first spline groove looks adaptation, and first spline inserts first spline inslot, makes force limiting rod 2 be connected with force limiting head 4.
In this embodiment, the one end of force limiting rod 2 towards force limiting head 4 is provided with first spline, the first spline groove has been seted up on the one end terminal surface that force limiting head 4 is connected with force limiting rod 2, first spline and first spline groove looks adaptation, through inserting first spline in the first spline groove, be connected force limiting rod 2 with force limiting head 4, make force limiting rod 2 link together through force limiting head 4 and spindle nose 5, make force limiting rod 2 can rotate or stop along with spindle nose 5 is synchronous.
In one embodiment of the present application, preferably, as shown in fig. 2, a second spline is arranged at the end of the force-limiting rod 2 connected to the roll-up drum 1, a second spline groove adapted to the second spline is arranged at the end of the roll-up drum 1 connected to the force-limiting rod 2, and the second spline is inserted into the second spline groove to connect the force-limiting rod 2 to the roll-up drum 1.
In this embodiment, one end of the force-limiting rod 2 connected to the roll-up barrel 1 is provided with a second spline, and correspondingly, the roll-up barrel 1 is provided with a second spline groove adapted to the second spline, so that the force-limiting rod 2 is inserted into the second spline groove through the second spline to be connected to the roll-up barrel 1, and the roll-up barrel 1 is connected to the spindle head 5 through the force-limiting rod 2.
When the vehicle is in a normal state, a passenger pulls the safety braid, the winding drum 1, the force limiting rod 2 and the shaft head 5 rotate together, and the safety braid is pulled out; when the vehicle has an emergency such as collision, the locking function is started, the spindle nose 5 is locked and cannot rotate, the force limiting rod 2 and the winding drum 1 which are connected with the spindle nose are also locked, and the safety mesh belt cannot be pulled out continuously; and along with the effort increase that acts on safety meshbelt and take-up barrel 1 among the collision process, the moment of torsion that limit rod 2 bore grows gradually, and after reaching the starting torque of limit rod 2, take-up barrel 1 rotates, and limit rod 2 takes place to twist reverse thereupon, and take-up barrel 1 no longer restricts the pulling out of safety meshbelt to realize the limit function of safety belt, alleviate the effort of safety meshbelt effect on the human body.
In one embodiment of the present application, preferably, as shown in fig. 1, the retractor spindle assembly with force limiting stop function further comprises a ball wheel 6; the ball wheel 6 is positioned between the shaft head 5 and the furling drum 1, one end of the ball wheel 6 is connected with the shaft head 5, and the other end of the ball wheel 6 is connected with the furling drum 1; the connecting part 51 and the first clamping part 42 are both positioned in the ball wheel 6 and clamped with the ball wheel 6.
In this embodiment, the retractor spindle assembly with force-limiting stopping function further comprises a ball wheel 6; the ball wheel 6 is positioned between the shaft head 5 and the furling drum 1, and the outer circumferential surface of the ball wheel 6 is provided with a plurality of semicircular grooves which are uniformly distributed along the circumferential direction and are used for connecting a driving piece; the ball wheel 6 is hollow to form a hollow cavity, and the connecting part 51 of the shaft head 5 and the first clamping part 42 of the force limiting head 4 are positioned in the hollow cavity; the spline groove has been seted up on the inner wall of cavity, is provided with the spline on the outer wall of connecting portion 51 of spindle nose 5 and the first joint portion 42 of force-limiting head 4, installs back on the connecting portion 51 of spindle nose 5 with the first joint portion 42 of force-limiting head 4, can form a complete spline, this spline and the spline groove looks adaptation of cavity to be in the same place connecting portion 51 and first joint portion 42 and the 6 joint of ball wheel.
The application also provides a safety belt retractor which comprises the retractor spindle assembly with the force limiting stopping function in any one of the embodiments.
In this embodiment, the seat belt retractor includes the retractor core assembly having the force limiting stop function, so the seat belt retractor has all the advantages of the retractor core assembly having the force limiting stop function, which is not described in detail herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A mandrel component of a winding machine with a force limiting stop function is characterized by comprising a winding drum, a force limiting rod, a stop nut, a force limiting head and a mandrel head;
one end of the force limiting head is connected with the shaft head, and an external thread connecting part is arranged on the outer wall of the other end of the force limiting head;
the stop nut is positioned at one end, facing the shaft head, of the furling drum and is connected with the furling drum, and an internal thread connecting part matched with the external thread connecting part is arranged on the inner wall of the stop nut; the stop nut is in threaded connection with the force limiting head;
a stopping part is arranged on the outer wall of the force limiting head, and when the stop nut is screwed to the root part of the external thread connecting part, the stop nut can abut against the stopping part;
the force limiting rod is located in the furling drum, one end of the force limiting rod is connected with the end of the furling drum, and the other end of the force limiting rod is connected with the force limiting head.
2. The roll-up device mandrel assembly with the force-limiting stopping function according to claim 1, wherein a connecting part is arranged on the end surface of one end, facing the roll-up barrel, of the mandrel head, and a first clamping groove is formed in the connecting part;
a first clamping part is arranged on the end face of one end, facing the shaft head, of the force limiting head; the first clamping portion is inserted into the first clamping groove, so that the force limiting head is clamped with the shaft head.
3. The reel assembly of a roll-up device with a force-limiting stopping function according to claim 2, wherein a protrusion is arranged on a groove wall of the first clamping groove.
4. The reel assembly of claim 2, wherein the outer wall of the first engaging portion protrudes from the external thread connecting portion to form the stopping portion.
5. The roll-up device mandrel assembly with the force-limiting stopping function according to claim 2, wherein a second clamping groove is formed in the inner wall of one end, facing the mandrel head, of the roll-up barrel, and a second clamping portion is formed in the outer wall of the stop nut; the second clamping portion extends into the second clamping groove, so that the stop nut is clamped with the furling drum.
6. The reel assembly of a roll-up device with a force-limiting stopping function according to claim 1, wherein a step part is further provided on an end surface of the roll-up tube facing the spindle head, and the stop nut can extend into the step part and abut against a stepped surface of the step part.
7. The roll-up device mandrel assembly with the force-limiting stopping function according to claim 1, wherein a first spline groove is formed in the end surface of the force-limiting head facing one end of the roll-up barrel; one end of the force limiting rod, which is connected with the force limiting head, is provided with a first spline matched with the first spline groove, and the first spline is inserted into the first spline groove, so that the force limiting rod is connected with the force limiting head.
8. The core assembly of the roll-up device with the force-limiting stopping function according to claim 6, wherein one end of the force-limiting rod connected with the roll-up barrel is provided with a second spline, and the end of the roll-up barrel connected with the force-limiting rod is provided with a second spline groove matched with the second spline; and the second spline is inserted into the second spline groove, so that the force limiting rod is connected with the furling drum.
9. The retractor spindle assembly with a force limiting stop function of claim 2 further comprising a ball wheel;
the ball wheel is positioned between the shaft head and the furling drum, one end of the ball wheel is connected with the shaft head, and the other end of the ball wheel is connected with the furling drum;
the connecting portion with first joint portion all is located in the ball wheel, and with ball wheel looks joint.
10. A seatbelt retractor comprising the retractor spindle assembly having a force limit stop function according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737944.1U CN211001240U (en) | 2019-10-16 | 2019-10-16 | Retractor spindle assembly with force limiting stop function and safety belt retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737944.1U CN211001240U (en) | 2019-10-16 | 2019-10-16 | Retractor spindle assembly with force limiting stop function and safety belt retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211001240U true CN211001240U (en) | 2020-07-14 |
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ID=71505574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921737944.1U Active CN211001240U (en) | 2019-10-16 | 2019-10-16 | Retractor spindle assembly with force limiting stop function and safety belt retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211001240U (en) |
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2019
- 2019-10-16 CN CN201921737944.1U patent/CN211001240U/en active Active
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