CN216331899U

CN216331899U - Coiler assembly with pre-tightening and degressive functions

Info

Publication number: CN216331899U
Application number: CN202122608861.6U
Authority: CN
Inventors: 王必付; 杨旭亮; 查根荣
Original assignee: Zhejiang Saikai Vehicle Industry Co ltd
Current assignee: Wenzhou Saikai Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-19
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to a retractor assembly with a pre-tightening and degressive function. The utility model aims to provide a retractor assembly with a pre-tightening degressive function. The utility model adopts the technical scheme that the device comprises a pre-tightening assembly, a winding drum assembly and a woven belt, wherein the winding drum assembly comprises a winding drum, a driving wheel, an emergency locking piece, a force limiting rod, a bent ring and a latch, a force limiting rod groove is formed in the winding drum, and a force limiting rod second groove is formed in the center of the emergency locking piece; the emergency locking piece is provided with an arc boss mounting groove, a force limiting boss is arranged in the arc boss mounting groove, the curved ring is wound on the winding drum, and a curved ring mounting opening, a curved ring first locking opening, a curved ring second locking opening and a curved ring force limiting opening are formed in the curved ring. The utility model has the advantages that: due to the double structural design of the force limiting rod and the curved ring, the pretightening force can be gradually decreased after reaching the peak value, and the use safety of the safety belt is improved.

Description

Coiler assembly with pre-tightening and degressive functions

Technical Field

The utility model relates to the technical field of retractors, in particular to a retractor assembly with a pre-tightening and degressive function.

Background

The retractor refers to a retractor with an emergency locking function. With the continuous optimization of the treatment under the emergency condition of the automobile, the safety belt worn on the human body needs to be urgently convoluted and pre-tightened at the moment of collision of the automobile, so that the looseness between the human body and the safety belt caused by various factors (such as wearing foamed clothes) is reduced, and the human body is firmly pulled back to an ideal position on the seat before the collision peak value is reached. When the collision peak value arrives, the safety belt will receive very big collision impact this moment, can restrict the power value on the safety belt, after the pretension action, needs the power value to diminish to make the safety belt diminish to people's power, thereby prevent that the safety belt from binding up power too big, make the people receive too big extrusion, lead to the health impaired.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a retractor assembly with a pretension decreasing function.

The retractor assembly with the pre-tightening degressive function adopts the technical scheme that the retractor assembly comprises a pre-tightening assembly, a winding drum component rotatably arranged in the pre-tightening assembly and a woven belt sleeved on the winding drum component, and is characterized in that the winding drum component comprises a winding drum, a transmission wheel arranged at one end of the winding drum, an emergency locking piece arranged at the other end of the winding drum, a force limiting rod, a bent ring and clamping teeth arranged on the emergency locking piece, a force limiting rod groove is formed in the winding drum, a second force limiting rod groove is formed in the center of the emergency locking piece, two ends of the torsion rod are provided with torsion heads, the torsion head at one end of the torsion rod is embedded into the force limiting rod groove, and the torsion head at the other end of the torsion rod is embedded into the second force limiting rod groove;

be equipped with circular arc boss, first location boss and second location boss on the reel, urgent locking piece be equipped with the corresponding circular arc boss mounting groove of circular arc boss, be equipped with the power limit boss in the circular arc boss mounting groove, the curved ring is in on the reel, be equipped with on it with the corresponding looper installing port of circular arc boss, with the corresponding first locking mouth of looper of first location boss, with the corresponding second locking mouth of looper of second location boss, with the corresponding looper power limit mouth of power limit boss.

The winding drum is characterized in that an emergency locking piece positioning groove is formed in the winding drum, a limiting rod groove is formed in the emergency locking piece positioning groove, an emergency locking piece positioning boss corresponding to the emergency locking piece positioning groove is formed in the emergency locking piece, a limiting rod second groove is formed in the emergency locking piece positioning boss, and a drag reduction ring is arranged between the emergency locking piece positioning groove and the emergency locking piece positioning boss.

The center of the torque head is provided with a torque head positioning hole, and the center of the second groove of the force limiting rod is provided with a torque head positioning bulge corresponding to the torque head positioning hole.

The winding drum is provided with a square rotating shaft at one end far away from the emergency locking piece, and the square rotating shaft is provided with a gear driving disc used for mounting the driving wheel.

The limiting rod groove, the limiting rod second groove and the torque head are all in quincunx structures.

The retractor assembly with the pre-tightening and degressive function has the advantages that: the dual structure design of force-limiting rod and looper for thereby give the pretightning force when the car bumps or under the urgent locking condition at first and let out the baldric and give other people and cause too big power, the pretightning force descends progressively afterwards, makes and reduces the too big problem of safety belt binding force, effectively avoids the person to be injured, thereby improves safety belt safety in utilization.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Figure 1 is an exploded view of a retractor assembly having a pretension decrementing function in accordance with the present invention;

FIG. 2 is an exploded view of the spool assembly of the present invention;

FIG. 3 is a schematic view of a construction of the spool of the present invention;

FIG. 4 is a schematic diagram of the emergency lockout of the present invention;

FIG. 5 is a schematic view of the construction of a force limiting lever of the present invention;

FIG. 6 is a schematic view of the structure of the curved ring of the present invention;

fig. 7 is a schematic view of another construction of the roll of the utility model.

Detailed Description

As shown in fig. 1-7, the retractor assembly with a pre-tightening degressive function according to the present invention includes a pre-tightening assembly 1, a spool assembly 2 rotatably installed in the pre-tightening assembly 1, and a webbing 3 sleeved on the spool assembly 2, where the spool assembly 2 includes a spool 6, a transmission wheel 7 disposed at one end of the spool 6, an emergency locking member 8 disposed at the other end of the spool 6, a force limiting rod 9, a curved ring 12, and a latch 10 disposed on the emergency locking member 8, a force limiting rod groove 15 is disposed inside the spool 6, a force limiting rod second groove 16 is disposed at the center of the emergency locking member 8, torque heads 13 are disposed at two ends of the force limiting rod 9, the torque head 13 at one end of the force limiting rod 9 is embedded in the force limiting rod groove 15, and the torque head 13 at the other end is embedded in the force limiting rod second groove 16; the emergency locking device is characterized in that an arc boss 17, a first positioning boss 18 and a second positioning boss 19 are arranged on the winding drum 6, the emergency locking piece 8 is provided with an arc boss installation groove 20 corresponding to the arc boss 17, a force limiting boss 21 is arranged in the arc boss installation groove 20, the loop 12 is wound on the winding drum 6 and is provided with a loop installation opening 23 corresponding to the arc boss 17, a loop first locking opening 24 corresponding to the first positioning boss 18, a loop second locking opening 25 corresponding to the second positioning boss 19, a loop force limiting opening 26 corresponding to the force limiting boss 21, and a double structural design of a force limiting rod and a loop is adopted, so that pre-tightening force is firstly given to the automobile when the automobile is collided or under the emergency locking condition, so that overlarge force caused by the shoulder strap is released, and then the pre-tightening force is gradually reduced, so that the overlarge safety belt tightening force is reduced, effectively avoid the personal injury to improve the safety in utilization of the safety belt.

Be equipped with urgent locking piece constant head tank 28 in the reel 6, be equipped with in urgent locking piece constant head tank 28 limiting rod recess 15, be equipped with in urgent locking piece 8 with urgent locking piece location boss 29 corresponding to urgent locking piece constant head tank 28, be equipped with in urgent locking piece location boss 29 limiting rod second recess 16, urgent locking piece constant head tank 28 with be equipped with drag reduction ring 11 between urgent locking piece location boss 29.

The center of the torque head 13 is provided with a torque head positioning hole 31, and the center of the second groove 16 of the force limiting rod is provided with a torque head positioning bulge 32 corresponding to the torque head positioning hole 31, so that the force limiting rod is positioned more accurately and fixed firmly.

One end of the winding drum 6, which is far away from the emergency locking piece 8, is provided with a square rotating shaft 36, and the square rotating shaft 36 is sleeved with a gear driving disc 35 used for mounting the driving wheel 7.

The force limiting rod groove 15, the force limiting rod second groove 16 and the torque head 13 are all of quincunx structures, positioning is accurate, and torque is large.

When an emergency occurs in an automobile, the winding drum 6 recovers the safety belt to realize a pre-tightening function, when the force of the shoulder belt reaches a specified magnitude, the winding drum is connected with the emergency locking piece only through the force limiting rod 9 and the bent ring 12, the winding drum 6 can rotate in a small amplitude, the safety belt is slowly and slightly driven by the winding drum 6 to be released outwards, the excessive force of the shoulder belt is firstly discharged by the shoulder belt through the bent ring force limiting opening 26 of the bent ring 12, meanwhile, the force limiting rod 9 generates torsion due to the rotation of the winding drum 6 and deforms to ensure the stability of the connection of the force limiting rod and the emergency locking piece, so that the excessive force of the shoulder belt is discharged, after the winding drum 6 rotates for one circle, the bent ring 12 does not work, the tightening force of the safety belt is reduced, and the force limiting rod 9 still plays a role to achieve the effect of limiting under the emergency locking condition.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a coiler assembly with pretension function of decrementing, include pretension assembly (1), rotatable install in reel subassembly (2), the cover in pretension assembly (1) is established meshbelt (3) on reel subassembly (2), its characterized in that: the winding drum assembly (2) comprises a winding drum (6), a transmission wheel (7) arranged at one end of the winding drum (6), an emergency locking piece (8) arranged at the other end of the winding drum (6), a limiting rod (9), a curved ring (12) and a clamping tooth (10) arranged on the emergency locking piece (8), wherein a limiting rod groove (15) is formed in the winding drum (6), a limiting rod second groove (16) is formed in the center of the emergency locking piece (8), two ends of the limiting rod (9) are provided with torque heads (13), the torque head (13) at one end of the limiting rod (9) is embedded into the limiting rod groove (15), and the torque head (13) at the other end of the limiting rod (9) is embedded into the limiting rod second groove (16);

be equipped with circular arc boss (17), first location boss (18) and second location boss (19) on reel (6), urgent locking piece (8) be equipped with circular arc boss mounting groove (20) that circular arc boss (17) are corresponding, be equipped with power limit boss (21) in circular arc boss mounting groove (20), looper (12) are winding on reel (6), be equipped with on it with corresponding looper installing port (23) of circular arc boss (17), with the corresponding first locking mouth (24) of looper of first location boss (18), with the corresponding second locking mouth (25) of looper of second location boss (19), with power limit boss (21) corresponding looper power limit mouth (26).

2. The retractor assembly with a pretension degressive function according to claim 1, wherein: be equipped with urgent locking piece constant head tank (28) in reel (6), be equipped with in urgent locking piece constant head tank (28) moment-limiting rod recess (15), be equipped with in urgent locking piece (8) with urgent locking piece location boss (29) that urgent locking piece constant head tank (28) is corresponding, be equipped with in urgent locking piece location boss (29) moment-limiting rod second recess (16), urgent locking piece constant head tank (28) with be equipped with drag reduction circle (11) between urgent locking piece location boss (29).

3. The retractor assembly with a pretension degressive function according to claim 1, wherein: the center of the torque head (13) is provided with a torque head positioning hole (31), and the center of the second limiting rod groove (16) is provided with a torque head positioning bulge (32) corresponding to the torque head positioning hole (31).

4. The retractor assembly with a pretension degressive function according to claim 1, wherein: the emergency locking device is characterized in that one end, far away from the emergency locking piece (8), of the winding drum (6) is provided with a square rotating shaft (36), and the square rotating shaft (36) is sleeved with a gear driving disc (35) used for installing the driving wheel (7).

5. The retractor assembly with a pretension degressive function according to claim 1, wherein: the force limiting rod groove (15), the force limiting rod second groove (16) and the torque head (13) are all in quincunx structures.