Buffering force release type emergency locking retractor for automobile safety belt

Abstract

The utility model discloses a buffer force release type automobile safety belt emergency locking type retractor, which relates to the technical field of safety belt retractors and comprises a shell, a cover plate is fixedly mounted on the outer surface of the shell, and a tension spring is movably mounted on the outer surface of the shell. An inductor is fixedly installed on the side, away from the cover plate, of the shell, and a pre-tightening mechanism for improving the pre-tightening limiting force is arranged on the inner side face of the shell. According to the buffer force release type emergency locking type retractor for the automobile safety belt, protectiveness to equipment is improved through the cover plate installed on the shell, the shaft core is used for driving the safety belt to be wound, and the sensor is used for detecting the safety belt wound on the shaft core, so that the pulling-out change of the safety belt is sensed, the safety belt is conveniently locked by the locking assembly, and the safety belt is protected. And by means of mutual cooperation of the pretensioner assembly and the guider, the force limiting capacity of the safety belt is improved, the energy absorption effect is achieved, and the overall stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of safety belt winder, concretely to a buffer release force type automobile safety belt emergency locking type winder. BACKGROUND

[0002] The safety belt assembly is composed of a belt, a winder, a buckle, a pretensioner and a locking device, wherein the winder functions to adjust the length of the belt, and under normal circumstances, the belt is lengthened or shortened to adapt to the size and fatness of the user, once the user fastens the belt, the winder can retract the excess belt and keep the user from moving forward with the proper winding force, and when an accident occurs, the winder can lock the belt instantly and prevent it from stretching, thereby fixing the user.

[0003] However, the existing winder lacks the function of buffering expansion, which causes the personnel in the car to be impacted and rushed forward, and the safety belt is completely locked, causing impact injury to the front chest of the personnel in the car.

[0004] In order to solve the above-mentioned defects, the existing technology discloses a kind of automobile safety belt winder, including shell, the top of the shell is equipped with shuttle, the both ends of the shell are fixedly connected with function box, two function boxes are provided with rotating shaft, one end of the rotating shaft is rotatably extended into shell, buffering mechanism is provided in the shell;The buffering mechanism includes torsion bar arranged in the shell, the fixed end and the free end of the torsion bar are connected with corresponding rotating shaft respectively, the inner wall of the shell is fixedly connected with two mounting rings, the inner wall of two mounting rings is rotatably sleeved with same sleeve roller, the buffering mechanism is arranged, when the inner ratchet wheel brake rotating shaft in emergency of car, the contraction distance of safety belt is delayed by torsion bar, so that safety belt can effectively prevent passenger from being injured, and use effect is better.

[0005] The above-mentioned device delays the contraction distance of safety belt by using buffering mechanism during use, but the stability of the pretensioning and force limiting process of the winder is poor when the vehicle is subjected to impact in the above-mentioned device, which causes the winder to be prone to deformation and fracture, thereby affecting the use of the equipment. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a buffer release force type automobile safety belt emergency locking type winder to solve the problem of poor stability of the pretensioning and force limiting process of the winder in the above-mentioned background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a buffer release force type automobile safety belt emergency locking type winder, including the casing, the outer surface fixed mounting of casing has the apron, the inner side fixed mounting of casing has the pre-tightener assembly, the inner side movable mounting of apron has the axle core, and the outer surface movable mounting of casing has the tension spring, the side fixed mounting of casing away from apron has inductor, the inner side of casing is provided with pre-tightening mechanism of improving pre-tightening limit.

[0008] Further, the both sides of the shell are provided with through holes for accommodating the corresponding position structure of the shaft core.

[0009] Further, the shaft core is arranged on the inner side of the shell, and the locking assembly is arranged between the shell and the inductor.

[0010] Further, the pre-tightening mechanism includes a guide, which is movably installed on the outer surface of the shell, and the safety belt is movably installed on the inner side of the shell.

[0011] Further, the outer surface of the safety belt movably installs a fixing member, and the outer surface of the safety belt movably installs a positioning member.

[0012] Further, the fixing member and the positioning member are provided with a buckle, which is movably installed on the outer surface of the safety belt, and the safety belt is inserted into the clamping pin.

[0013] Further, the outer surface of the clamping pin is fixedly installed with a waist pre-tightener, and the outer surface of the waist pre-tightener is fixedly installed with a fixed block.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] (1) The apron installed on the casing increases the protection of the equipment, the safety belt is driven by the axle core for winding, and the safety belt wound on the axle core is detected by the inductor, so that the change of the safety belt pulling out is sensed, the locking assembly is convenient for locking the safety belt, the safety belt is prevented from being too long to cause injury to the personnel, and the pre-tightener assembly and the guide are matched to increase the limiting force of the safety belt, the energy absorption effect is achieved, and the stability of the whole is increased.

[0016] (2) the axle core is positioned through the through hole of the shell, and when the vehicle is collided, the safety belt is pulled out under the action of inertia, at the moment, the inductor senses the change of the safety belt pulling out, and the inductor is a safety belt acceleration inductor, the locking assembly is used for locking the safety belt, and the locking assembly comprises a locking block, a connecting column and an elastic piece, the locking block is arranged in the mounting groove of the axial end surface of the axle core and rotates with the axle core, the connecting column is arranged on the locking block in the axial direction of the axle core, one end of the elastic piece is fixed on the connecting column, and the other end is connected to the axle core, the locking block is provided with an elastic force towards the inner periphery, so that the damage to the personnel is reduced;

[0017] (3) the safety belt is conducted through the guider, the guider increases the friction force of the safety belt, the movement position of the safety belt is positioned through the fixed piece and the positioning piece, the fixed piece and the positioning piece are installed in the vehicle, so that the safety belt is prevented from falling off;

[0018] (4) the buckle of the safety belt is inserted into the tenon manually, the safety belt is quickly returned through the waist pre-tightener, the hip displacement is reduced, the secondary injury of the lower limbs is reduced, and the safety of the personnel is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a shell three-dimensional structure schematic view of the utility model;

[0020] Fig. 2 It is an inductor three-dimensional structure schematic view of the utility model;

[0021] Fig. 3 It is a tension spring three-dimensional structure schematic view of the utility model;

[0022] Fig. 4 It is an axle core three-dimensional structure schematic view of the utility model;

[0023] Fig. 5 It is a cover plate three-dimensional structure schematic view of the utility model;

[0024] Fig. 6 It is a tenon three-dimensional structure schematic view of the utility model.

[0025] In the drawing: 1, shell; 2, cover plate; 3, safety belt; 4, fixed piece; 5, buckle; 6, positioning piece; 7, inductor; 8, guider; 9, locking assembly; 10, tension spring; 11, pre-tightener assembly; 12, axle core; 13, tenon; 14, waist pre-tightener; 15, fixed block. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0027] Embodiment one: please refer to Figs. 1-3 The utility model provides the following technical scheme: a buffer release force type automobile safety belt emergency locking type winder, including casing 1, the outer surface fixed mounting of casing 1 is installed with cover plate 2, the inner side of casing 1 is fixedly installed with pre-tightener assembly 11, the inner side of cover plate 2 is movably installed with shaft core 12, and the outer surface of casing 1 is movably installed with tension spring 10, the side away from cover plate 2 of casing 1 is fixedly installed with inductor 7, and the inner side of casing 1 is provided with pre-tightening mechanism that improves pre-tightening limit.

[0028] Through the casing 1 installation cover plate 2 increase the protective property to the equipment, utilize shaft core 12 drive safety belt 3 and carry out winding, and through inductor 7 to safety belt 3 that is wound on shaft core 12 is detected, thereby inducting the change of safety belt 3 pullout, through tension spring 10 relief generated impact force, it is convenient for locking assembly 9 to safety belt 3 is locked, avoid safety belt 3 to stretch too long and lead to personnel to be injured, and utilize the mutual cooperation of pre-tightener assembly 11 and guider 8, increase the limiting force ability of safety belt 3, play the energy absorption effect, increase the stability of whole.

[0029] Embodiment two: on the basis of embodiment one, please refer to Figs. 1-5 Also disclosed is guider 8, and its specific structure is as follows: the both sides of casing 1 are provided with through holes, the through holes are used for accommodating the structure of the corresponding position of shaft core 12, the shaft core 12 is arranged on the inner side of the casing 1, the locking assembly 9 is arranged between the casing 1 and the inductor 7, the pre-tightening mechanism comprises the guider 8, the guider 8 is movably installed on the outer surface of the casing 1, and the safety belt 3 is movably installed on the inner side of the casing 1.

[0030] The through hole formed in the casing 1 is used for positioning the shaft core 12, and when the vehicle is subjected to a collision, the personnel pulls out the safety belt 3 under the action of inertia, at this time, the inductor 7 senses the change of the safety belt 3 pullout, and the inductor 7 is a safety belt acceleration inductor, the locking assembly 9 is used for locking the safety belt 3, and the locking assembly 9 comprises a locking block, a connecting column and an elastic member, the locking block is arranged in the mounting groove of the axial end surface of the shaft core 12 and rotates with the shaft core 12, the connecting column is arranged on the locking block in the axial direction of the shaft core 12, one end of the elastic member is fixed to the connecting column, and the other end is connected to the shaft core 12, so as to provide the locking block with an elastic force tending to the inner periphery, thereby reducing the damage to the personnel.

[0031] Example 3: Based on Example 1, please refer to... Figs. 1-6 The paper also discloses a lumbar pretensioner 14, the specific structure of which is as follows: a fixing member 4 is movably installed on the outer surface of the safety belt 3, a positioning member 6 is movably installed on the outer surface of the safety belt 3, a buckle 5 is provided between the fixing member 4 and the positioning member 6, the buckle 5 is movably installed on the outer surface of the safety belt 3, and the safety belt 3 is inserted into the buckle pin 13, the lumbar pretensioner 14 is fixedly installed on the outer surface of the buckle pin 13, and a fixing block 15 is fixedly installed on the outer surface of the lumbar pretensioner 14.

[0032] The seat belt 3 is guided by the guide 8, which increases the friction on the seat belt 3, thereby increasing the resistance to pulling the seat belt 3 out. The fixed part 4 and the positioning part 6 are used to position the movement of the seat belt 3. The fixed part 4 and the positioning part 6 are installed inside the vehicle to prevent the seat belt 3 from falling off. The buckle 5 of the seat belt 3 is manually inserted into the buckle 13, and the lumbar pretensioner 14 is used to quickly return the seat belt 3, reducing hip displacement, reducing secondary injuries to the lower limbs, and improving the safety of the occupants.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A buffer-releasing type emergency locking retractor for automotive seat belts, comprising a housing (1), wherein a cover plate (2) is fixedly installed on the outer surface of the housing (1), characterized in that: A pretensioner assembly (11) is fixedly installed on the inner side of the housing (1), a shaft core (12) is movably installed on the inner side of the cover plate (2), and a tension spring (10) is movably installed on the outer surface of the housing (1). A sensor (7) is fixedly installed on the side of the housing (1) away from the cover plate (2), and a pre-tightening mechanism for improving the pre-tightening limit force is provided on the inner side of the housing (1).

2. The cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 1, characterized in that: The housing (1) has through holes on both sides, which are used to accommodate the structure of the corresponding position of the shaft core (12).

3. A cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 2, characterized in that: The shaft (12) is arranged on the inner side of the housing (1), and a locking assembly (9) is provided between the housing (1) and the sensor (7).

4. A cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 1, characterized in that: The pretensioning mechanism includes a guide (8), which is movably mounted on the outer surface of the housing (1), and a safety belt (3) is movably mounted on the inner side of the housing (1).

5. A cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 4, characterized in that: The outer surface of the safety belt (3) is movably fitted with a fastener (4), and the outer surface of the safety belt (3) is movably fitted with a positioning element (6).

6. A cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 5, characterized in that: A buckle (5) is provided between the fixing member (4) and the positioning member (6). The buckle (5) is movably installed on the outer surface of the safety belt (3), and the safety belt (3) is inserted into the buckle (13).

7. A cushioning and force-relieving type emergency locking retractor for automotive seat belts according to claim 6, characterized in that: A waist pretensioner (14) is fixedly installed on the outer surface of the pin (13), and a fixing block (15) is fixedly installed on the outer surface of the waist pretensioner (14).

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