CN107933492A - A kind of adaptive car sense component - Google Patents

Abstract

The present invention relates to passive safety feature technical field, specifically a kind of adaptive car sense component, including sensitive pawl, adaptive seat, fixed pedestal, clump weight, steel ball, the lower end of adaptive seat is fixed with clump weight, the upper end of adaptive seat is connected through the bottom of fixed pedestal and with the side wall of fixed pedestal, steel ball is placed in the basket of fixed pedestal, basket has concave oval crooked inner surface, the axial angle of oval crooked inner surface is less than horizontal angle, it is covered in the middle part of sensitive pawl on steel ball, the end of sensitive pawl is connected with fixed pedestal, engage or separate with the tooth of ratchet in the other end of sensitive pawl.The present invention is compared with the existing technology, the tangential moment of torsion produced by adaptive spring in the motion process of adaptive seat, to slow down movement of the adaptive seat relative to fixed pedestal, tangential moment of torsion increase ensure that adaptive seat, clump weight are maintained at upright position, reduce the possibility of seat harness retracting device locking.

Description

An adaptive car sensor component

technical field

The invention relates to the technical field of passive safety devices, in particular to an adaptive vehicle sensing component.

Background technique

The patent application with publication number US20160214569A1 discloses a seat belt retracting device, which is arranged in a seat back of a vehicle. In the safety belt retracting device, its core component is: an adaptive vehicle sensor component, which can rotate together with the rotation of the seat back.

In the structure disclosed in this patent document, the gravity adaptive vehicle sensor component includes: a steel ball, a counterweight, a sensitive claw, an adaptive seat, a fixed base, an adaptive spring, and a sensitive pin. The gravity adaptive car feeling component uses the tangential torque generated by the adaptive spring during the movement of the adaptive seat to slow down the movement of the adaptive seat relative to the fixed base.

However, the self-adaptive spring has the disadvantages of producing small tangential torque, complex assembly and easy deformation. Moreover, the use of adaptive springs in seat belt retractors also results in an increase in the number of parts, a more complex assembly of the assembly, and an increase in the cost of the parts.

Therefore, it is necessary to design an adaptive vehicle sensor component that can increase tangential torque, reduce cost, and have reliable and stable vehicle sensor locking performance.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the prior art and provide a low-noise safety belt retractor, which can realize the goal of low cost and stable and reliable performance while reducing the noise generated by the vehicle sensor mechanism when it vibrates.

In order to achieve the above object, the present invention is a self-adaptive vehicle sensor assembly, including sensitive claws, self-adaptive seat, fixed base, counterweight, steel ball, characterized in that: the lower end of the self-adaptive seat is fixed with counterweight, The upper end of the adaptive seat passes through the bottom of the fixed base and is connected with the side wall of the fixed base. The steel ball is placed in the basket of the fixed base. The basket has a concave elliptical curved inner surface, and the axial clamp The angle is smaller than the horizontal angle, the middle part of the sensitive claw is covered on the steel ball, the end of the sensitive claw is connected with the fixed base, and the other end of the sensitive claw is engaged with or separated from the teeth of the ratchet.

The axial angle refers to the angle formed between the left bottom surface and the right bottom surface of the basket, and the transverse angle refers to the angle formed between the front bottom surface and the rear bottom surface of the basket.

Described sensitive pawl comprises clasp, lever arm, cap and hinge assembly, and one end of lever arm is provided with hinge assembly, and the other end of lever arm extends and forms cap and terminates in clasp, and clasp and ratchet The teeth are matched, the cap has a circular concave lower surface, and the cap covers the steel ball.

The fixed base includes an upper shell, a lower shell part and a short shaft 1, the front side of the upper shell is provided with a short shaft 1, the bottom of the upper shell is connected with the lower shell part, and the top of the upper shell is provided with a short shaft 1. There are grooves that match the side covers of the retractor.

The lower shell part includes a lower basket and an arched part. An arched part is provided on the left and right sides of the lower basket. A round hole is provided on the arched part, and a rectangular opening is provided at the bottom of the lower basket.

The opening length of the rectangular opening is greater than the rotation distance of the adaptive seat and the counterweight.

A sensitive pin is used to connect the hinge assembly of the sensitive claw and the short shaft one of the fixed base.

The self-adaptive seat includes an upper thin plate, a lower thin plate and a basket. The basket is suspended across the lower thin plates with two raised upper ends. The lower thin plate is provided with a T-shaped opening, and the side wall of the basket is provided with two upward The upper thin plate is extended, the upper end of the upper thin plate protrudes, and the outer surface of the upper thin plate is provided with a short shaft two, and the short shaft two is inserted into the round hole of the arched part.

The counterweight includes two parallel sides, an upper end and a lower end, and a T-shaped protruding structure is arranged on the side, and the T-shaped protruding structure is inserted into the T-shaped opening of the lower thin plate, and the side is close to the lower thin plate. The lower end has a conical structure.

Compared with the prior art, the present invention designs a mechanism that keeps the main body of the retracting device at the initial setting position according to the rotation angle of the seat back, and uses the tangential torque generated by the self-adaptive spring during the movement of the self-adaptive seat to reduce the The slow movement of the adaptive seat relative to the fixed base and the increase of the tangential torque ensure that the adaptive seat and the counterweight remain in a vertical position, reducing the possibility of locking the seat belt retractor. The adaptive spring is canceled. On the one hand, it reduces the number of parts, reduces the cost of parts and the assembly cost of the product; The stop performance is reliable and stable.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a perspective view of the present invention.

Figure 3 is an exploded view of the present invention.

Fig. 4 is a motion state diagram of the present invention.

Fig. 5 is a motion state diagram of the present invention when the axial included angle α of the elliptical curved inner surface is smaller than the transverse included angle β.

Fig. 6 is a motion state diagram of the present invention when the axial included angle α of the elliptical curved inner surface is equal to the transverse included angle β.

Fig. 7 is a top view of the adaptive seat of the present invention.

FIG. 8 is a cross-sectional view along line A-A of FIG. 7 .

Fig. 9 is a B-B sectional view of Fig. 7 .

Fig. 10 is a schematic diagram of the opening length L of the lower basket, the self-adaptive seat and the rotation distance x of the counterweight in the present invention.

Fig. 11 is a schematic diagram of assembly of the present invention.

Detailed ways

The present invention will be further described now in conjunction with accompanying drawing.

Referring to Figures 1-3, the present invention is an adaptive vehicle sensing component, including sensitive claws, adaptive seats, fixed bases, counterweights, and steel balls. The lower end of the adaptive seat 140 is fixed with a counterweight 160, the upper end of the adaptive seat 140 passes through the bottom of the fixed base 180 and is connected with the side wall of the fixed base 180, and the steel ball 130 is placed in the basket 148 of the fixed base 180 Inside, the basket 148 has a concave elliptical curved inner surface.

Referring to FIGS. 7-9 , the axial angle α of the elliptical curved inner surface is smaller than the transverse angle β, so that the steel ball 130 can roll and rise along the transverse direction of the adaptive seat 140 . Wherein, the axial angle α refers to the angle formed between the left bottom surface and the right bottom surface of the basket 148 , and the transverse angle β refers to the angle formed between the front bottom surface and the rear bottom surface of the basket 148 . The middle part of the sensitive claw 120 covers the steel ball 130 , the end of the sensitive claw 120 is connected with the fixed base 180 , and the other end of the sensitive claw 120 is engaged with or separated from the tooth 12 of the ratchet 10 .

Sensitive pawl 120 comprises clasp 122, lever arm 126, cap 124 and hinge assembly 128, and one end of lever arm 126 is provided with hinge assembly 128, and hinge assembly 128 is clamped on the two ends of short shaft one 186 of fixed base 180, and hinge The assembly 128 is connected with the short shaft one 186 by a sensitive pin 110 , and the lever arm 126 rotates around the hinge assembly 128 . The other end of the lever arm 126 extends to form a cap 124 and terminates at the engaging pawl 122, the engaging pawl 122 cooperates with the teeth 12 of the ratchet 10, the cap 124 has a circular concave lower surface, and the cap 124 covers the steel ball 130 .

The fixed base 180 comprises an upper casing 184, a lower casing component and a short shaft one 186, the front side of the upper casing 184 is provided with a short shaft one 186, the bottom of the upper casing 184 is connected with the lower casing component, and the upper casing The top of 184 is provided with groove 182, and groove 182 matches with retractor side cover. The lower housing part comprises a lower basket 194 and an arched part 190, and an arched part 190 is respectively provided on the left and right sides of the lower basket 194, and a round hole 192 is provided on the arched part 190, and a rectangular opening is provided at the bottom of the lower basket 194 . The opening length L of the rectangular opening is greater than the rotation distance x of the self-adaptive seat 140 and the counterweight 160, so as to increase the rotational space of the counterweight 160 and the self-adaptive seat 140, thereby increasing the force of the steel ball 130 rising in the lateral direction of the self-adaptive seat 140. high.

Adaptive seat 140 comprises upper thin plate 144, lower thin plate 150 and basket 148, and basket 148 straddles the lower thin plate 150 that protrudes at two upper ends and is suspended, and lower thin plate 150 is provided with T-shaped opening 154, and the side wall of basket 148 There are two upper thin plates 144 extending upwards, the upper ends of the upper thin plates 144 protrude, and the outer surface of the upper thin plates 144 is provided with a minor axis 2 142, which is inserted into the circular hole 192 of the arched part 190 . The adaptive seat 140 can rotate relative to the arched part 190 , and under the action of gravity, the adaptive seat 140 and the counterweight 160 are kept in a vertical state.

The counterweight 160 includes two parallel sides 162, an upper end 170 and a lower end 166. The side 162 is provided with a T-shaped protruding structure 164, and the T-shaped protruding structure 164 is inserted into the T-shaped opening 154 of the lower thin plate 150. The side surfaces 162 are in close contact with the lower thin plates 150 . When the counterweight 160 is snapped in, the distance between the two lower thin plates 150 will increase slightly, and the lower end 166 has a tapered structure.

Referring to Fig. 4, when the seat back is tilted at a certain angle, that is, the installation angle c, the fixed base 180 of the adaptive vehicle sensor component also tilts accordingly. At this time, under the action of gravity, the adaptive seat 140 and the counterweight 160 Keeping it in the vertical state is the initial state.

Referring to FIG. 5 and FIG. 6 , when the acceleration a of the vehicle equipped with the adaptive vehicle sensor component moves to the left, under the action of inertial force, the adaptive seat 140 and the counterweight 160 move to the right.

5 and 10, when the axial angle α of the basket 148 having an elliptical curved inner surface of the adaptive seat 140 is smaller than the transverse angle β, and the opening length L of the lower basket 194 of the fixed base 180 is shorter than that of the adaptive seat 140 And when the rotation distance x of the counterweight 160 is large, it is easier for the steel ball 130 to roll and rise along the lateral direction of the self-adaptive seat 140, and the cap 124 of the sensitive claw 120 is pushed up, and the rising height of the steel ball 130 can make the sensitive The engaging pawl 122 of the pawl 120 is engaged with the tooth 12 of the ratchet 10, thereby locking the seat belt retractor.

6, when the axial angle α of the basket 148 with an elliptical curved inner surface of the adaptive seat 140 is equal to the lateral angle β, the steel ball 130 rolls and rises along the lateral direction of the adaptive seat 140, but the steel ball 140 The rising height is not enough to push up the engaging pawl 122 of the sensitive pawl 120 to engage with the tooth 12 of the ratchet 10 , that is, the safety belt retracting device cannot be locked.

Referring to Fig. 11, in operation, the angle of the seat belt retractor changes with the rotation of the seat back; the fixed base 180 moves with the retractor. Due to gravity, when the minor axis 142 of the adaptive seat 140 rotates around the arched part 192, the adaptive seat 140 moves accordingly, and the counterweight 160 will keep the adaptive seat 140 in a vertical state. When the vehicle is in an emergency, the steel ball 130 will roll up on the oval inner surface of the basket 148 of the self-adaptive seat 140, and push the sensitive pawl 120 up so that the engaging pawl 122 engages with the tooth 12 of the ratchet 10 to start Locking mechanism for retractor.

Claims (9)

1. a kind of adaptive car sense component, including sensitive pawl, adaptive seat, fixed pedestal, clump weight, steel ball, it is characterised in that： Adaptive seat（140）Lower end be fixed with clump weight（160）, adaptive seat（140）Upper end pass through fixed pedestal（180）Bottom Portion and and fixed pedestal（180）Side wall connection, steel ball（130）It is placed in fixed pedestal（180）Basket（148）It is interior, basket（148）Tool There are concave oval crooked inner surface, the axial angle of oval crooked inner surface（α）Less than horizontal angle（β）, sensitive pawl（120） Middle part be covered in steel ball（130）On, sensitive pawl（120）End and fixed pedestal（180）Connection, sensitive pawl（120）It is another One end and ratchet（10）Tooth（12）Engagement or separation.

A kind of 2. adaptive car sense component according to claim 1, it is characterised in that：The axial angle（α）Refer to basket （148）Left side bottom surface and right side bottom surface between the angle that is formed, the horizontal angle（β）Refer to basket（148）Front side bottom surface The angle formed between rear side bottom surface.

A kind of 3. adaptive car sense component according to claim 1, it is characterised in that：The sensitive pawl（120）Including Engagement pawl（122）, lever arm（126）, cap（124）And hinge component（128）, lever arm（126）One end be equipped with hinge set Part（128）, lever arm（126）The other end extend to form cap（124）And terminate at engagement pawl（122）, engagement pawl（122）With Ratchet（10）Tooth（12）Coordinate, cap（124）With circular depressed lower surface, cap（124）It is covered in steel ball（130）On.

A kind of 4. adaptive car sense component according to claim 1, it is characterised in that：The fixed pedestal（180）Bag Include upper shell（184）, bottom shell component and short axle one（186）, upper shell（184）Front side be equipped with short axle one（186）, upper shell （184）Bottom be connected with bottom shell component, upper shell（184）Top be equipped with groove（182）, groove（182）Filled with retracting Put side cover matching.

A kind of 5. adaptive car sense component according to claim 4, it is characterised in that：Under the bottom shell component includes Basket（194）And arch member（190）, lower basket（194）The left and right sides be respectively provided with an arch member（190）, arch member （190）It is equipped with circular hole（192）, lower basket（194）Bottom be equipped with oblong openings.

A kind of 6. adaptive car sense component according to claim 5, it is characterised in that：The opening of the oblong openings Length（L）More than adaptive seat（140）And clump weight（160）Rotary distance（x）.

A kind of 7. adaptive car sense component according to claim 3 or 4, it is characterised in that：Sensitive pawl（120）Hinge set Part（128）With fixed pedestal（180）Short axle one（186）Between using sensitive pin（110）Connection.

A kind of 8. adaptive car sense component according to claim 1, it is characterised in that：The adaptive seat（140）Bag Include upper thin sheet（144）, lower thin sheet（150）And basket（148）, basket（148）Across the lower thin sheet in two upper end protrusions（150）And hang Put, lower thin sheet（150）It is equipped with T-shaped opening（154）, basket（148）Side wall be equipped with two upper thin sheets upwardly extended （144）, upper thin sheet（144）Upper end it is raised, upper thin sheet（144）Outer surface be equipped with short axle two（142）, short axle two（142）Insert Enter arch member（190）Circular hole（192）It is interior.

A kind of 9. adaptive car sense component according to claim 1, it is characterised in that：The clump weight（160）Including Two sides being parallel to each other（162）, upper end（170）And bottom（166）, side（162）It is equipped with T-shaped projective structure （164）, T-shaped projective structure（164）It is inserted into lower thin sheet（150）T-shaped opening（154）It is interior, side（162）It is close to lower thin sheet （150）, bottom（166）Tapered structure.