CN117868610A - Irreversible safety device, vehicle door handle and operation method thereof - Google Patents

Abstract

The invention discloses an irreversible safety device, comprising: the safety retaining member is provided with a blocking part and a backstop part, the blocking part is used for receiving impact force and rotating relative to the locking position, the blocking part is used for preventing the part to be locked from acting at the locking position, the backstop part is propped against the limiting seat and is separated from the limiting seat by an axial locking stroke, and the backstop part is used for axially acting to the locking position by rotating and releasing the locking stroke; the retaining part is formed on the limiting seat and used for stopping the non-return part at the locking position and limiting the rotation of the non-return part at the locking position; the elastic piece is used for exerting a first acting force for driving the safety retaining member to rotate and a second acting force for driving the safety retaining member to axially act towards the locking position, the safety retaining member rotates away from the locking position through the first acting force and forces the non-return part to abut against the retaining part, and the second acting force prevents the safety retaining member from being separated from the locking position.

Description

Irreversible safety device, vehicle door handle and operation method thereof

Technical Field

The invention relates to the technical field of automobile parts, in particular to an irreversible safety device, a door handle and an operation method thereof.

Background

Currently, door handles of the prior art generally comprise a control arm to which a bowden cable is directly or indirectly connected, through which the door lock is connected, and which is actuated by actuation of a handle body to drive the bowden cable to unlock the door lock when unlocking is required by pulling the handle.

The other handle assembly in the prior art consists of a base and a handle body, wherein an inertia arm is arranged on the base, the inertia arm is connected with a torsion spring, and is far away from the control arm under the action of the torsion spring in a normal state, the control arm can be normally driven to unlock the vehicle door at the moment, and when the vehicle door is subjected to impact force, the inertia arm can rotate under the action of inertia and stop the control arm, so that the vehicle door is prevented from being impacted and opened, and potential safety hazards are caused;

although the above-mentioned inertial arm can solve the problem that the door is bumped and opened to a certain extent, the inertial arm only has an instant effect on the stop of the control arm, and cannot keep a stable locking effect on the inertial arm, and when the inertial arm faces multiple impacts, the inertial arm needs to repeatedly execute multiple locking actions and reset trends, which increases the risk of failure of the inertial lock, and therefore, an irreversible safety device capable of stabilizing locking is needed.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide an irreversible safety device.

The technical aim of the invention is realized by the following technical scheme: an irreversible safety device, comprising:

the base is provided with a limit seat, and a safety retaining member which can move along a rotating shaft of the limit seat is restrained in the limit seat;

the safety retaining member is provided with a blocking part and a backstop part, the blocking part is used for receiving impact force and rotating relative to a locking position, the blocking part is used for preventing the part to be locked from acting at the locking position, the backstop part is propped against the limiting seat and is separated from the limiting seat by an axial locking stroke, and the backstop part is used for axially acting the safety retaining member to the locking position by rotating and releasing the locking stroke;

a retaining part formed on the limit seat, wherein the retaining part is used for stopping the non-return part at the locking position and limiting the rotation of the non-return part at the locking position;

the elastic piece is used for exerting a first acting force for driving the safety retaining member to rotate and a second acting force for driving the safety retaining member to axially act towards the locking position, the safety retaining member rotates away from the locking position through the first acting force and forces the non-return part to abut against the retaining part, and the second acting force prevents the safety retaining member from being separated from the locking position.

The safety retaining member is manually actuated by the part to be locked to axially separate from the locking position, and rotates to an unlocking state far away from the part to be locked and the locking position by a first acting force after being separated from the part to be locked.

Further, the elastic member includes a spring body integrally provided, and a free end and a fixed end formed on the spring body, the free end pressing against the blocking portion and providing a first force, and the spring body pressing against the safety holding member and providing a second force.

Further, the rotating shaft is integrally formed on the safety retaining member, the safety retaining member is provided with a pre-hook for the fixing end to be blocked on, the safety retaining member is internally provided with a balancing weight, the limiting seat is provided with a chute for receiving the fixing end, one end of the pre-hook is open for the fixing end to be placed in, and the opening is opposite to the chute.

Wherein, the balancing weight is interchangeably set up in the non-return portion.

Further, the retaining portion is formed outside the inner surface of the limiting seat, and the retaining portion is a locking notch formed on the limiting seat, so that the non-return portion enters the locking notch after rotating, and the non-return portion abuts against the locking notch through a second acting force.

Further, the non-return portion is provided with a first locking surface facing the limiting seat and a second locking surface arranged in relation to the rotation direction, the first locking surface abuts against the limiting seat and restrains the axial position of the safety retaining member, the first locking surface receives the impact force to separate from the limiting seat, and the second locking surface is allowed to receive the first acting force to rotate to the retaining portion.

Further, the second locking surface is provided with a holding portion that cooperates with the holding portion and restrains the safety holding member in the locking position, and a guide portion that is spaced from the holding portion and guides the backstop from the locking position.

Further, the rotation center of the to-be-locked component extends towards the blocking part to be provided with a blocking matching part, and the blocking part is matched with the blocking matching part and prevents the to-be-locked component and applies a third acting force deviating from the second acting force through the blocking matching part.

Further, the blocking portion is disposed near the rotation center of the component to be locked, and the blocking portion and the stopper fitting portion are disposed nearly in parallel in the initial state, and the axis of the safety retaining member is disposed in parallel with respect to the door and perpendicular to the rotation axis of the component to be locked.

The invention also provides a vehicle door handle, which comprises the irreversible safety device, and comprises a base, a transmission arm and a control arm which are rotatably arranged in the base, and an actuator for driving the transmission arm, wherein the control arm is connected with an unlocking mechanism, a transmission groove is formed in the transmission arm, the vehicle door handle is provided with a transmission rod which stretches into the transmission groove, the transmission arm and the rotation center which is used for applying force to be close to the control arm are arranged on the transmission arm, a first resistance mechanism is arranged on the rotation center of the transmission arm and the control arm, and a second resistance mechanism is arranged close to the rotation center of the transmission arm.

Further, a first detection mechanism for detecting the actuator is configured on the base, and the first detection mechanism outputs a first signal and a second signal according to the initial state or the open state of the actuator; the base is also provided with a second detection mechanism for detecting the transmission arm, and the second detection mechanism is in an open state or an unlocking state according to the transmission arm and outputs a third signal so as to determine whether the handle body is in a normal open state or an emergency state according to the existence of the first signal to the third signal.

The invention also provides an operation method of the vehicle door handle, which comprises the following steps:

A. The handle is normally opened, the actuator receives an opening signal to act, the output rod on the actuator drives the transmission arm, at the moment, the first detection mechanism obtains a first signal through the action of the actuator, the transmission arm overcomes the action of the first resistance mechanism, and the transmission groove applies the transmission rod to force the door handle to be unfolded towards the opening direction;

B. the handle swings in place, the output rod moves to the opening position, the door handle swings to the opening position at the moment, the first detection mechanism further obtains a second signal through the action of the actuator, and the transmission arm and the control arm form transmission fit;

C. the handle body is unlocked, the transmission arm further actuates the control arm, the second detection mechanism obtains a third signal through the action of the transmission arm, the control arm rotates to control the unlocking mechanism to unlock, and the transmission arm provides an actuating force by further action of the actuator or manual pulling of the door handle;

D. the door handle is locked, the safety retaining member bearing the impact force is forced to rotate, the restraint of the axial position is released on the limiting seat, the safety retaining member axially moves to the locking position through the second acting force, the blocking part rotates into the opening stroke of the control arm, the non-return part is reset to the retaining part due to the first acting force, and the blocking part keeps the stop position of the control arm;

E. The door handle is unlocked, the step A and the step B are executed, the transmission arm further brakes the control arm, the control arm applies a third acting force of the blocking part opposite to the second acting force, the non-return part is axially separated from the retaining part through the third acting force, so that the rotation locking is released, and the blocking part is reset through the first acting force and is far away from the control arm.

Further, in step E, the transmission arm and the control arm are manually actuated, and the safety holding member is reset after being disengaged from the control arm, and the safety holding member is held in engagement with the control arm by a second force during the unlocking of the control arm to actuate the safety holding member.

Further, step X is also included, in which a pre-hook and an elastic element for applying a second force are arranged on the safety holding member, the elastic element having a fixed end acting on the limit seat and a free end acting on the safety holding member, the fixed end being blocked on the safety holding member by the pre-hook 3.4 in the unassembled state and released on the limit seat in the assembled state.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the two sides of the safety retaining member are provided with a blocking part and a non-return part, the blocking part bears a first acting force and is far away from the control arm in an initial position, the non-return part is abutted on the limiting seat and limits the axial position of the safety retaining member, so that the control arm can normally rotate and unlock; when the safety retaining member is subjected to impact force, the blocking part moves towards the control arm and stops the control arm, at the moment, the check part is separated from the axial limit of the limiting seat through rotation, and releases the axial locking stroke, and the second acting force of the elastic piece is used for axial movement, at the moment, the blocking part is further close to the control arm, and the check part is blocked on the retaining part under the influence of the first acting force, so that the safety retaining member is kept at the current locking position, and reliable locking force is provided for the control arm;

2. In the invention, the first acting force for forcing the safety retaining member to reset and rotate and the second acting force for forcing the safety retaining member to move from the axial initial position to the locking position are both from the elastic piece, so that the installation of the safety retaining member is simplified, the rotating shaft of the safety retaining member is integrally arranged, the number of parts of the inertial structure is further simplified, and the assembly of the inertial structure on the base is facilitated;

3. in the invention, the resistance mechanisms are respectively arranged on the control arm and the transmission arm, so that the actuation of the transmission part in the base under the influence of the impact force can be prevented to a certain extent, and whether the handle is in an abnormal state under impact or not can be determined by the presence or absence of the first signal and the second signal on the actuator and the third signal and the fourth signal on the control arm, so that the locking of the vehicle-machine system is facilitated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention in an initial state;

FIG. 3 is an enlarged view at C in FIG. 2;

FIG. 4 is a schematic view of the structure of the present invention in a non-return blocking state;

FIG. 5 is an enlarged view of FIG. 4 at D;

FIG. 6 is a schematic view of the structure of the elastic module of the present invention pre-installed on the safety holding member;

FIG. 7 is an enlarged view at E in FIG. 6;

FIG. 8 is a schematic view of the structure of the present invention in an initial state;

fig. 9 is an enlarged view of F in fig. 7;

FIG. 10 is a schematic view of the control arm of the present invention;

FIG. 11 is a schematic view of the structure of the base and safety retaining member of the present invention;

FIG. 12 is a schematic view of a first detection mechanism of the present invention;

FIG. 13 is a schematic diagram of a second detection mechanism of the present invention;

FIG. 14 is a schematic view of another embodiment of a second force of the present invention;

FIG. 15 is a schematic diagram of signal reception of an electrically controlled lock of the present invention;

FIG. 16 is a schematic view of the inertial lock of the present invention in a reset state;

in the figure: 1. a base; 1.1, a first guide seat; 1.2, a second guide seat;

2. a limit seat; 2.1, a retaining wall; 2.2, reinforcing ribs; 2.3, a guiding port;

3. a safety holding member; 3.1, a blocking part; 3.11, a chute; 3.2, a non-return part; 3.21, a first locking surface; 3.22, a second locking surface; 3.3, rotating shaft; 3.4, pre-hooking 3.4;3.5, balancing weight;

4. a holding section; 4.1, locking notch;

5. an elastic member; 5.1, a spring body; 5.2, a free end; 5.3, fixing end;

6. a control arm; 6.1, a stop matching part; 6.2, inhaul cable; 6.3, a pressed part;

7. A transmission arm; 7.1, a transmission groove; 7.2, tooth portions; 7.3, pressing part;

8. an actuator; 8.1, an output rod; 8.2, first raised strips; 8.3, second raised strips;

9. a first resistance mechanism; 9.1, resistance gears;

10. a second resistance mechanism; 10.1, a second torsion spring; 10.2, damping strips;

11. a first detection mechanism; 11.1, a first elastic sheet; 11.2, a first signal; 11.3, a second signal;

12. a second detection mechanism; 12.1, a second elastic sheet; 12.2, a third signal; 12.3, fourth signal;

13. a handle body; 13.1, a transmission rod; 14. an electric control lock; 15. a spring; 16. balancing weight;

Detailed Description

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.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding and are not used to define any directional or sequential limitation.

As shown in fig. 1-16, an irreversible safety device, comprising:

the base 1, the base 1 rotates and is provided with a handle body 13;

a control arm 6 having a rotation axis B, and the control arm 6 being restrained at one side within the base 1 and restrained to rotate toward an unlocking direction of the other side, the control arm 6 connecting an unlocking member as a component to be locked stopped by the safety holding member 3;

the safety retaining member 3 has a rotation axis a, and has an initial state and a locking state that acts upon impact according to the vehicle condition, the safety retaining member 3 is provided with a blocking portion 3.1 and a non-return portion 3.2, the blocking portion 3.1 and the non-return portion 3.2 are arranged on both sides of the safety retaining member 3 with respect to the axis a, the blocking portion 3.1 rotates with the safety retaining member 3 and stops against the control arm 6 upon impact, the non-return portion 3.2 rotates with the safety retaining member 3 and forms a locking state with the retaining portion 4 on the limiting seat 2, and the safety retaining member 3 and the blocking portion 3.1 thereof are retained in the locking state against the control arm 6 by a locking force between the non-return portion 3.2 and the limiting seat 2.

An elastic piece 5, which is arranged on the safety retaining member 3 and provides a first acting force and a second acting force for the safety retaining member 3, wherein the first acting force forces the safety retaining member 3 and the control arm 6 to be separated from a stop, and the second acting force forces the safety retaining member 3 to move towards the limit seat 2 in the axial direction;

The limit seat 2 is formed on the base 1 and serves as an installation position of an inertial structure, and in an initial state, the blocking part 3.1 bears a first acting force and keeps the unlocking posture of the control arm 6, and the non-return part 3.2 bears a second acting force and is abutted against the inner surface of the limit seat 2;

the retaining part 4 is formed outside the inner surface of the limit seat 2, and when the safety retaining member 3 rotates under the impact force, the check part 3.2 is allowed to axially move after rotating so as to be kept in locking fit with the check part 3.2, at the moment, the safety retaining member 3 still bears the second acting force to axially abut against the limit seat 2 and the retaining part 4 and is blocked on the retaining part 4 under the influence of the first acting force, thereby enabling the safety retaining member 3 to be kept in a posture of rotating for one stroke, enabling the blocking part 3.1 to be always kept in the unlocking stroke of the control arm, further enabling the control arm to always not reach the unlocking position, and applying a stable stop to the control arm 6.

In this way, the safety retaining member 3 can be kept in the locked state, so that the situations of failure and untimely action of the safety retaining member 3 when the safety retaining member is impacted for a plurality of times are avoided, and the safety of personnel in the vehicle is ensured.

As shown in fig. 4, in the present embodiment, the axis a of the safety holding member 3 is disposed perpendicular to the axis B of the control arm 6, however, depending on the different types of handles and the operation of the control arm 6, the axis a of the safety holding member 3 and the axis B of the control arm 6 may be disposed in other arrangements, such as parallel, as long as the rotation of the safety holding member 3 can stop and interfere with the rotation stroke of the control arm 6.

As a further explanation of the holding of the detent 3.2, the detent 3.2 is locked by an axial movement of the safety holding member 3, which is specifically directed to a direction toward the control arm 6, whereby the safety holding member 3 has an initial position corresponding to the initial state, and a locking position corresponding to the locked state, and the driving force urging it to move from the initial position to the locking position is mainly provided by the elastic piece 5, of course, an impact force from outside can also apply an axial force to the safety holding member 3, so that the safety holding member 3 can quickly reach the locking position, and the locking action of the detent 3.2 to the control arm 6 is improved with the application of the instantaneous impact force.

The non-return portion 3.2 extends towards the inner surface of the limit seat 2 about the axis a, so that in the initial position, the non-return portion 3.2 and the elastic element 5 limit the axial position of the safety retaining member 3 in the limit seat 2, so that the safety retaining member 3 has a stable initial position, an axial space is separated from the non-return portion 3.2 abutting against the limit seat 2, a locking stroke L of the safety retaining member 3 in the axial direction is formed, when the impact force is received, the non-return portion 3.2 rotates to separate from the axial limit of the limit seat 2, the locking stroke L is released, and the safety retaining member 3 is allowed to axially act, namely, the non-return portion 3.2 and the retaining portion 4 form a stop, and the blocking portion 3.1 is retained in the locking position interfering with the control arm 6.

As a further embodiment of the cooperation of the non-return portion 3.2 with the base 1, as shown in fig. 5 and 7 to 9, a first locking surface 3.21 facing the unlocking rotation direction and a second locking surface 3.22 facing the axis a are formed on the non-return portion 3.2; the stop seat 2 is provided with a stop wall 2.1 facing the safety retaining member 3, a locking notch 4.1 allowing the non-return part 3.2 to axially move is reserved on the stop wall 2.1, the retaining part 4 is specifically formed on the boundary of the locking notch 4.1, the stop wall 2.1 and the base 1 form an axial space axially restraining the safety retaining member 3 in an initial position, the locking notch 4.1 forms a locking space allowing the safety retaining member 3 to axially move to a locking position, when the safety retaining member 3 is subjected to impact force, the non-return part 3.2 is forced to rotate and align to the locking notch 4.1 through rotation of the safety retaining member 3, and the non-return part 3.2 enters the locking notch 4.1 under the axial ejection action of a second acting force.

In the initial position, the second locking surface 3.22 abuts against the blocking wall 2.1, when the collision force is received, the safety retaining member 3 is forced to rotate, the non-return portion 3.2 receives the collision force to rotate and align to the locking notch 4.1, the second locking surface 3.22 performs a locking stroke L and enters the locking notch 4.1 under the guidance of the second acting force, abuts against the locking notch 4.1 under the guidance of the first acting force and keeps limiting, so that the non-return portion 3.2 is restrained to be kept in a locked state, and the rest surface of the root portion of the non-return portion 3.2 is attached to the blocking wall 2.1 under the guidance of the second acting force, at the moment, the locking stroke L is consumed, and the safety retaining member 3 is ensured to give stable and reliable locking to the control arm 6.

In the above embodiment, the retaining wall 2.1 is formed by the wall surface formed on the limit seat 2, and the rotation shaft 3.3 of the safety holding member 3 is also supported on the side of the retaining wall 2.1, and in order to maintain the reliability of the retaining wall 2.1 against the non-return portion 3.2, the reinforcing rib 2.2 is provided on the back of the retaining wall 2.1 against the locking notch 4.1 to avoid the non-return portion 3.2 from being separated from the locking notch 4.1 due to the deformation of the retaining wall 2.1.

In summary, the blocking portion 3.1 and the backstop portion 3.2 are kept in the locked state by the first acting force and the second acting force, and at the same time, the first acting force and the second acting force keep the safety holding member 3 in the initial state, and the initial state is switched to the locked state by the rotation caused by the impact force.

It should be noted that the direction of rotation of the safety holding member 3 by the impact force is opposite to the direction of rotation of the safety holding member 3 by the first urging force.

As shown in fig. 16, as an embodiment of releasing the locked state of the safety holding member 3, after the impact force is over, the door needs to be unlocked, otherwise, the person in the vehicle is trapped in the vehicle, and there is a potential safety hazard as well, therefore, in this embodiment, the unlocking force is provided by the control arm 6, the outer handle is pulled manually by the operator, the safety holding member 3 is pushed by the control arm 6 to apply a third force away from the locked position and returning to the initial position, at this time, the backstop portion 3.2 is retracted to the axial position of the initial position, after the control arm returns, the control arm is disengaged from the safety holding member, at this time, the safety holding member is reversely rotated under the influence of the first force, and further returns to the initial position, so that the backstop portion 3.2 is disengaged from the holding portion 4 and is again abutted against the axial blocking wall 2.1 of the limiting seat 2, at this time, the blocking portion 3.1 rotates under the first force and is disengaged from the control arm 6, and returns to the initial position of the limiting seat 2.

It is worth mentioning that the safety holding member and the control arm remain in the engaged state by the second urging force during the control arm unlocking of the safety holding member, and therefore, the safety holding member is not unlocked even if the control arm is actuated upon receiving the impact force for the second time.

Further, the first locking surface 3.21 abuts against the blocking wall 2.1 of the limiting seat 2 and constrains the axial position of the safety retaining member 3, and the first locking surface 3.21 receives the impact force to separate from the limiting seat 2, wherein, to improve the response smoothness of the safety retaining member 3, the first locking surface 3.21 may be an arc surface inwardly folded from two sides to reduce friction with the blocking wall 2.1, so that the safety retaining member 3 can be smoothly switched between the locking position and the initial position.

As shown in fig. 5 to 10, as a further embodiment for engaging the control arm 6 with the safety holding member 3, a stopper engaging portion 6.1 is extended from the bottom of the control arm 6, the stopper engaging portion 6.1 is separated from the blocking portion 3.1 in an initial state, and when receiving a collision force, the blocking portion 3.1 rotates into an unlocking stroke of the stopper engaging portion 6.1, thereby preventing the control arm 6 from performing an unlocking action.

Preferably, the stop engagement is located at the bottom of the control arm, thereby further compressing the size of the base.

Preferably, the safety holding member 3 rotates in preference to the control arm 6 and holds the control arm 6 in the initial position.

Alternatively, the blocking portion 3.1 is spaced apart from the stopper engaging portion 6.1 in the height direction in the initial position, and is rotated synchronously to the stopper engaging portion 6.1 by the rotation of the safety holding member 3 caused by the first force, and is abutted to the stopper engaging portion 6.1 by the axial movement of the safety holding member 3 caused by the second force.

Specifically, on the basis that the axis B of the control arm 6 and the axis a of the safety holding member 3 are perpendicular to each other, the stopper engaging portion 6.1 and the blocking portion 3.1 are provided in an end-face parallel arrangement, so that when the locking position is reached, the stopper engaging portion 6.1 engages with the blocking portion 3.1 in a face-to-face abutting manner, and the locking stability of the safety holding member 3 to the control arm 6 is improved.

As an example, in the initial position, the blocking portion 3.1 is located relatively below the stopper engaging portion 6.1 to avoid the normal unlocking action of the lever, and the upper surface of the blocking portion 3.1 approaches the lower surface of the stopper engaging portion 6.1 in a substantially parallel relationship therebetween, so that the rotation of the safety holding member 3 can rapidly stop the lever when receiving the impact force.

In the locked state, a third force of the safety holding member 3 about the axis a away from the stop engagement portion 6.1 is applied by the stop engagement portion 6.1, by which the backstop portion 3.2 is disengaged from the base 1 and the first force is allowed to force the backstop portion 3.2 to rotate to the initial state.

In other embodiments, the opposite faces of the safety holding member 3 or the control arm 6 are provided with abutment projections, in particular circular-arc-shaped bumps, with the aim of reducing the rotational resistance of the blocking portion 3.1 and the stop engagement portion 6.1 when they are in engagement.

In this embodiment, in order to improve the response efficiency and the stop effect of the stop portion 3.1 to the stop mating portion 6.1, the stop portion 3.1 extends toward the rotation center of the control arm 6, and the stop mating portion 6.1 extends on the rotation center side of the control arm 6, and the unlocking member is specifically connected to one end of the control arm 6 away from the rotation center thereof, by the above improvement, the stop effect and the response efficiency of the safety holding member 3 to the control arm 6 are improved, and the safety holding member 3 can be easily unlocked by the control arm 6 in a safe state.

As an improvement to the safety holding member 3, as shown in fig. 3, a rotation shaft 3.3 is integrally formed on the safety holding member 3, the safety holding member 3 is axially movably disposed in the limit seat 2 by the rotation shaft 3.3, and by integrally disposing the rotation shaft 3.3 with the safety holding member 3, the parts of the safety holding member 3, and the play due to the assembly clearance are reduced.

Specifically, in order to facilitate the installation of the safety holding member 3 in the limit seat 2, a guide opening 2.3 is provided on the limit seat 2 and/or the rotating shaft 3.3, and the guide opening 2.3 is provided towards the outside.

In the above embodiment, the elastic member 5 specifically includes the spring body 5.1, and the fixed end 5.3 and the free end 5.2 extending at both ends of the spring body 5.1, the fixed end 5.3 being abutted against the base 1, the free end 5.2 being abutted against the safety holding member 3 and exerting a first force, the spring body 5.1 being abutted against the safety holding member 3 and exerting a second force, the second force being mainly provided by the spacing between the coils constituting the spring body 5.1.

In this embodiment, the spring body 5.1 is fitted over the safety holding member 3, the elastic element 5 provides both a first force and a second force in the form of torsion-like springs, and the free end 5.2 in particular bears against the blocking portion 3.1, so that the stopping effect on the control arm 6 is optimized.

In order to accommodate the axial displacement of the safety holding element 3, a slide groove 3.11 is also provided on the blocking part 3.1 for the free end 5.2 to slide thereon.

As an improvement to the safety holding member 3, the safety holding member is provided with a pre-hook 3.4 for the fixing end to be blocked thereon, the pre-hook 3.4 is in an L shape, one end of the pre-hook 3.4 is opened for the fixing end to be placed in, the opening is opposite to the chute, the fixing end is blocked on the safety holding member through the pre-hook 3.4 in an unassembled state and is released to the limit seat in an assembled state, thereby the safety holding member, the balancing weight and the elastic piece are installed in a modularized manner, the elastic piece can be integrated on the safety holding member, and the safety holding member is convenient to package and transport.

As shown in fig. 14, in other embodiments, the elastic element 5 further comprises a separately provided spring 15 which directly abuts the axial end of the safety holding member 3 remote from the blocking portion 3.1 and the backstop portion 3.2 and exerts a second force on the safety holding member 3, or which only needs to be able to provide a second force which axially acts the safety holding member 3 towards the locking position, with the difference that the integral elastic element 5 further reduces the assembly play, as well as the play of the safety holding member 3 at play.

As shown in fig. 1 to 3, the present invention further provides a door handle, including the above-mentioned irreversible safety device, comprising a base 1, a transmission arm 7 and a control arm 6 rotatably disposed in the base 1, and an actuator 8 for driving the transmission arm 7, wherein the control arm 6 is connected with an unlocking mechanism 6.2, the transmission arm 7 is provided with a transmission groove 7.1, the door handle has a transmission rod 13.1 extending into the transmission groove 7.1, the transmission arm 7 applies force to the rotation center near the control arm 6, wherein the end of the transmission rod 13.1 is spherical, so that the transmission groove 7.1 presses the transmission rod 13.1 and drives the handle body 13 to swing out.

Specifically, the transmission arm 7 and the control arm 6 are provided with a first resistance mechanism 9 at the rotation center, a second resistance mechanism 10 is provided near the rotation center of the transmission arm 7, the first resistance mechanism 9 comprises a first torsion spring 9.1 arranged at the rotation center of the transmission arm 7, the second resistance mechanism 10 comprises a second torsion spring 10.1 arranged at the rotation center of the control arm 6, the first torsion spring 9.1 and the second torsion spring 10.1 provide acting force of the transmission arm 7 and the control arm 6 opposite to the unlocking opening direction, and meanwhile, the first torsion spring 9.1 and the second torsion spring 10.1 also prevent the transmission arm 7 and the control arm 6 inside the base 1 from acting when bearing collision force, so that stability and reliability of the transmission parts inside the door handle and the base 1 are improved.

Further, as can be seen from fig. 10 and 11, the first resistance mechanism 9 further includes a tooth portion 7.2 disposed on the unlocking portion side of the control arm, and a resistance gear 9.2 engaged with the tooth portion 7.2, wherein the tooth portion 7.2 thereon is kept engaged with the resistance gear 9.2 during the opening stroke of the control arm, so that the reliability of the control arm is further improved while the opening feel is provided for the user, and the instantaneous impact force is required to overcome the resistance from the tooth portion 7.2 and the resistance gear 9.2.

By the improvement, the control arm 6 and the transmission arm 7 are respectively provided with a resistance mechanism which can block the forced opening under the influence of the impact force, so that the safety of the door handle is improved.

In the present embodiment, it is desirable to further optimize the effect of normally unlocking the door handle and countering the collision force to prevent abnormal unlocking of the door handle by spatial arrangement of the control arm 6 and the transmission arm 7.

Specifically, the control arm 6 is disposed adjacent to the transmission arm 7, and both have a rotating portion and a bearing portion at the end portions thereof, and the control arm 6 is disposed opposite to the rotating portion and the bearing portion on the transmission arm 7.

As an example, for the transmission arm 7, the rotating part thereof is located at the lower end and is connected to the first resistance mechanism 9, the bearing part thereof is located at the upper end, the output rod 8.1 of the actuator 8 acts on the bearing part, wherein the transmission groove 7.1 is located in the middle of the transmission arm 7, and the transmission groove 7.1 is provided with a pressing part 7.3 for pressing and driving the control arm 6 away from the rotating part.

As an example, for the control arm 6, the turning part thereof is located at the middle end, and is connected to the second resistance mechanism 10,

the rotating part is also matched with the safety retaining member 3 through a stop matching part 6.1, the bearing part is positioned at the upper end part, the tooth part is arranged at the lower end part of the control arm, and the upper end part and the lower end part of the control arm are both connected with the inhaul cable, wherein the inhaul cable at the lower end part of the control arm is connected with the unlocking mechanism;

the control arm 6 is provided with a pressed part 6.3 at one side close to the rotating part, the pressed part 6.3 is applied with acting force through the pressed part 7.3, transmission among the actuator 8, the transmission arm 7 and the control arm 6 is realized, through the improvement, the arm of force of the control arm 6 and the transmission arm 7 for normal opening and unlocking can be increased, the force of the impact force for forcing the control arm 6 and the transmission arm 7 to execute unlocking and opening actions is relatively reduced, and under the synergistic effect of the first resistance mechanism 9 and the second resistance mechanism 10, the safety of the door handle is ensured.

As shown in fig. 2 and 11, further, the second resistance mechanism 10 further comprises a damping strip oppositely arranged between the control arm and the base, and the unlocking action track of the damping strip 10.2 and the control arm 6 is extended, so that the impact resistance effect of the control arm 6 is improved, and meanwhile, the safety retaining member 3 is ensured to perform locking action before the control arm 6 by the resistance of the second resistance mechanism 10.

Further, the damping strips are arranged on both sides of the rotation center of the control arm to optimize the damping effect, and meanwhile, the inhaul cable on the control arm also optimizes the damping effect to reduce the forced action of the control arm under the impact effect.

In other embodiments, to avoid the displacement of the transmission member in the base 1 when receiving the impact force, a retaining structure is further provided on the base 1, and as can be seen from fig. 2, the retaining structure includes a first guide seat 1.1 and a second guide seat 1.2 provided on the base 1 row, where the first guide seat 1.1 is covered on the output rod 8.1 of the actuator 8 and allows the output rod 8.1 to perform a translational motion, and the second guide seat 1.2 is covered on the bearing part of the transmission arm 7 and allows the bearing part to rotate along with the transmission part, so as to guide the motion of the output rod 8.1 and the transmission arm 7 while guaranteeing the axial positions of the output rod 8.1 and the transmission arm 7.

As shown in fig. 12 and 13, the base 1 is further provided with a first detection mechanism 11 for detecting the actuator 8, and the first detection mechanism 11 outputs a first signal 11.2 and a second signal 11.3 according to whether the actuator 8 is in an initial state or an open state; the base 1 is further provided with a second detection mechanism 12 for detecting the actuator arm 7, the second detection mechanism 12 being in an open or unlocked state according to the actuator arm 7 and outputting at least a third signal 12.2.

In the present embodiment, whether the output lever 8.1 is in the operating state is determined by the presence or absence of the first signal 11.2, whether the output lever 8.1 is in place is determined by the presence or absence of the second signal 11.3, and whether the transmission arm 7 is driving the control arm 6 to perform the unlocking operation is determined by the presence or absence of the third signal 12.2.

In other embodiments, the second detecting mechanism 12 may further detect the position of the driving arm 7 to obtain a fourth signal 12.3, so as to further determine whether the driving arm reaches the unlocking position, and determine that the unlocking is performed by the further action of the driving arm 7 through the presence or absence of the fourth signal 12.3.

Preferably, the handle body 13 is determined to be in a normally open state or an emergency state by the presence or absence of the first to third signals.

In other embodiments, the door further comprises an electrically controlled lock 14, the electrically controlled lock 14 being arranged to receive the first to fourth signals 12.3 for unlocking the door, and to lock the door in the absence of the third signal 12.1, or in the absence of any of the third signal 12.1 and the fourth signal 12.2, to ensure that the door is opened under normal operation.

As shown in fig. 12, as one way of acquiring the first signal 11.2 and the second signal 11.3, two first elastic pieces 11.1 are disposed on the first detection mechanism 11, and a first protruding piece 8.2 and a second protruding piece 8.3 are disposed on the output rod 8.1, where the length of the first protruding piece 8.2 is longer than that of the second protruding piece 8.3 and is disposed closer to the first protruding piece 11.1 than that of the second protruding piece 8.3, the distance between the second protruding piece 8.3 and the first elastic piece 11.1 forms an output in-place stroke of the output rod 8.1, at this time, the handle body 13 is in an open state of swinging, that is, in a closed state of the handle body 13, the first protruding piece 8.2 and the second protruding piece 8.3 are both spaced from the first elastic piece 11.1, and when the output rod 8.1 is started, the first protruding piece 8.2 contacts the first protruding piece 11.2, meaning that the handle body 13 is in an open state, and when the second protruding piece 8.3 contacts the second protruding piece 12.1, the second protruding piece 11.3 contacts the second protruding piece 11.1, meaning that the handle body 13 is in an open state.

As shown in fig. 13, as one way of acquiring the third signal 12.2 and the fourth signal 12.3, the second detecting mechanism 12 is provided with a second elastic piece 12.1, the second elastic piece 12.1 has at least two position states triggered in sequence with respect to the motion stroke of the driving arm 7, the bearing part of the driving arm 7 is arc-shaped, and the tail end of the bearing part is used as an induction end to contact with the second elastic piece 12.1 so as to trigger the third signal 12.2 or the fourth signal 12.3, when the driving arm 7 contacts with the second elastic piece 12.1 once, the third signal 12.2 is obtained, which indicates that the handle body 13 swings to be opened and is performing the unlocking action, and when the driving arm 7 further triggers the second elastic piece 12.1, the fourth signal 12.3 is obtained, which indicates that the driving arm 7 reaches the unlocking position of the actuation control arm 6, and the door is unlocked at this time.

As an explanation of the third signal and the fourth signal, the third signal and the fourth signal can be distinguished as the signal strength of the second detection mechanism, i.e. the stroke of the second spring plate actuated by the transmission arm.

As shown in fig. 15, in other embodiments, the door further comprises an electrically controlled lock 14, the electrically controlled lock 14 being arranged to receive the first to fourth signals 12.3 for unlocking the door, in particular the electrically controlled lock 14 being arranged to receive an opening signal by rotation of the control arm 6, and to lock the door in the absence of any of the third to fourth signals 12.3 to ensure that the door is opened under normal operation.

The invention also provides an operation method of the vehicle door handle, which comprises the following steps:

A. when the handle is normally opened, the actuator 8 receives an opening signal to act, the output rod 8.1 on the actuator 8 drives the transmission arm 7, at the moment, the first detection mechanism 11 acts through the actuator 8, the first raised strip 8.2 is contacted with the first elastic sheet 11.1 to obtain a first signal 11.2, the transmission arm 7 acts against the first resistance mechanism 9 through the actuating force of the actuator 8, and the transmission groove 7.1 applies the transmission rod 13.1 to force the door handle to be unfolded towards the opening direction;

B. the handle is swung in place, the output rod 8.1 moves to the open position, the door handle swings to the open position at this time, the first detection mechanism 11 further moves through the actuator 8, the second raised strip 8.3 contacts with the first elastic sheet 11.1 and obtains a second signal 11.3, the transmission arm 7 is actuated to the open position corresponding to the handle body 13, the second detection mechanism 12 moves through the transmission arm 7 and touches the second elastic sheet 12.1 once, so as to obtain a third signal, and at this time, the transmission arm 7 and the control arm 6 form transmission fit;

C. the handle body 13 is unlocked, the transmission arm 7 further actuates the control arm 6, the control arm 6 rotates to control the unlocking mechanism 6.2 to unlock, and the second detection mechanism 12 acts through the transmission arm 7 and further touches the second elastic sheet 12.1, so that a fourth signal is obtained; wherein the unlocking action of the transmission arm 7 can be provided by further action of the actuator 8 or by manually pulling the door handle;

D. The door handle is locked, the safety retaining member 3 bearing the impact force is forced to rotate, the check part 3.2 rotates relative to the retaining wall 2.1, the restraint of the axial position is released on the limiting seat 2, the door handle axially moves to the locking position through the second acting force, the check part 3.1 rotates into the opening stroke of the control arm 6 and axially moves relative to the check matching part 6.1 of the control arm 6, the check part 3.2 is abutted to the retaining part 4 due to the first acting force, and the check position of the check part 3.1 to the control arm 6 is maintained;

E. the inertia unlocking is carried out, the step A and the step B are carried out, the transmission arm 7 further actuates the control arm 6, the control arm 6 applies a third acting force which is opposite to the second acting force to the blocking part 3.1, the non-return part 3.2 axially breaks away from the retaining part 4 through the third acting force, so that the rotation locking is released, the blocking part 3.1 and the non-return part 3.2 are reset and far away from the control arm 6 under the influence of the first acting force, at the moment, the non-return part 3.2 is propped against the blocking wall 2.1 of the limiting seat 2 again, and the axial position of the safety retaining member 3 is restrained in the limiting seat 2 again.

In step E, the transmission arm and the control arm are manually actuated, and the blocking portion of the safety retaining member is reset after being disengaged from the control arm, and the safety retaining member is kept engaged with the control arm by a second acting force during the unlocking of the control arm to actuate the safety retaining member.

The method further comprises a step X of arranging a pre-hooking 3.4 and an elastic piece for exerting a second acting force on the safety holding member, wherein the elastic piece is provided with a fixed end acting on the limit seat and a free end acting on the safety holding member, and the fixed end is blocked on the safety holding member through the pre-hooking 3.4 in an unassembled state and is released on the limit seat in an assembled state.

It should be noted that when the control arm 6 is actuated under the influence of the impact force, the first detection mechanism 11 and the second detection mechanism 12 lack signals at this time, and the vehicle machine system can determine that the vehicle is in an abnormal unlocking action at this time, so that the electronic control lock 14 can be controlled to lock the vehicle door.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims (10)

1. An irreversible safety device, characterized by:

the safety device comprises a limiting seat (2), wherein a safety retaining member (3) which can move along a rotating shaft (3.3) of the safety retaining member is restrained in the limiting seat (2);

a safety retaining member (3), wherein the safety retaining member (3) is axially abutted with the limit seat (2) and is separated by an axial locking action stroke, the safety retaining member (3) receives impact force to rotate and release the locking action stroke so as to enable the safety retaining member to axially act and be rotationally engaged with the limit seat to reach a locking position, and the safety retaining member is limited to rotate at the locking position and is engaged with a part to be locked and stops acting;

An elastic piece (5) for applying a first acting force for driving the safety retaining member (3) to reset and rotate and a second acting force for driving the safety retaining member (3) to axially act towards a locking position, wherein in the locking position, the safety retaining member (3) is forced to rotate to abut against the limiting seat (2) to overcome the first acting force and bear the second acting force to be retained at the locking position;

wherein the safety retaining member (3) is manually actuated by the part to be locked to axially disengage from the locked position and is rotated by a first force to an unlocked state away from the part to be locked and the locked position after disengagement from the part to be locked.

2. An irreversible safety device as in claim 1, wherein: the spring (5) comprises a spring body (5.1) which is integrally arranged, and a free end (5.2) and a fixed end (5.3) which are formed on the spring body (5.1), wherein the free end (5.2) presses the safety holding member (3) and provides a first acting force, and the spring body (5.1) presses the safety holding member (3) and provides a second acting force.

3. An irreversible safety device as in claim 2, wherein: the rotating shaft is integrally formed on the safety retaining member (3), the safety retaining member (3) is provided with a pre-hook (3.4) for clamping the fixed end on the safety retaining member, the safety retaining member (3) is internally provided with a balancing weight, the limiting seat (2) is provided with a sliding groove (3.11) for receiving the fixed end, one end of the pre-hook (3.4) is opened for placing the fixed end, and the opening is opposite to the sliding groove.

4. An irreversible safety device as in claim 1, wherein: the safety retaining member (3) is provided with a first locking surface (3.21) facing the limiting seat (2) and a second locking surface (3.22) arranged in the rotating direction, the first locking surface (3.21) is propped against the limiting seat (2) and restrains the axial position of the safety retaining member (3), the first locking surface (3.21) is separated from the limiting seat (2) which rotates by bearing the impact force, and the second locking surface (3.22) is allowed to bear the first acting force and is kept at the locking position.

5. An irreversible safety device as in claim 1, wherein: the axis of the safety retaining member (3) is arranged in parallel with respect to the door and perpendicular to the axis of rotation of the component to be locked.

6. A door handle comprising the irreversible safety device according to any one of claims 1 to 5, characterized in that: including base (1), rotate drive arm (7) and control arm (6) that set up in base (1) to and actuator (8) of drive arm (7), be connected with release mechanism (6.2) on control arm (6), drive groove (7.1) have been seted up on drive arm (7), door handle has transfer line (13.1) that stretch into drive groove (7.1), drive arm (7) and application of force are in being close to the rotation center of control arm (6), just be equipped with first resistance mechanism (9) on the rotation center of drive arm (7) and control arm (6), be close to the rotation center of drive arm (7) is equipped with second resistance mechanism (10).

7. A door handle as set forth in claim 6, wherein: the base (1) is provided with a first detection mechanism (11) for detecting the actuator (8), and the first detection mechanism (11) outputs a first signal (11.2) and a second signal (11.3) according to the initial state or the opening state of the actuator (8); the base (1) is further provided with a second detection mechanism (12) for detecting the transmission arm (7), and the second detection mechanism (12) is in an open state or an unlocking state according to the transmission arm (7) and outputs a third signal (12.2) so as to determine whether the handle body (13) is in a normal open state or an emergency state according to the existence of the first signal (12.2) to the third signal (12.2).

8. A method of operating a door handle for a vehicle as claimed in claim 6, comprising the steps of:

A. the handle is normally opened, the actuator (8) receives an opening signal to act, the output rod (8.1) on the actuator drives the transmission arm (7), the transmission arm (7) acts against the first resistance mechanism (9), and the transmission groove (7.1) applies the transmission rod (13.1) to force the door handle to be unfolded towards the opening direction;

B. the handle is swung in place, the output rod (8.1) acts to the opening position, the door handle swings to the opening position at the moment, and the transmission arm (7) and the control arm (6) form transmission fit;

C. The handle body (13) is unlocked, the transmission arm (7) further actuates the control arm (6), the control arm (6) rotates to control the unlocking mechanism (6.2) to unlock, and the transmission arm (7) is further operated by the actuator (8) or manually pulls the door handle to provide an actuating force;

D. the door handle is locked, the safety retaining member (3) bearing the impact force is forced to rotate, the limit seat (2) releases the restriction of the axial position and axially moves to the locking position through the second acting force, the safety retaining member (3) rotates to the opening stroke of the control arm (6), the safety retaining member (3) is reset to the retaining part (4) due to the first acting force, and the stop position of the safety retaining member (3) to the control arm (6) is maintained;

E. the door handle is unlocked, the step A and the step B are executed, the transmission arm (7) further actuates the control arm (6), the control arm (6) applies a third acting force of the safety retaining member (3) opposite to the second acting force, the safety retaining member (3) axially breaks away from the limit seat through the third acting force, thereby unlocking the rotation, and the safety retaining member (3) is reset and far away from the control arm (6) through the first acting force.

9. A method of operating a door handle as set forth in claim 8, wherein: in step E, the actuator arm and the control arm are manually actuated and the safety holding member is reset after being disengaged from the control arm, the safety holding member being held in engagement with the control arm by a second force during the control arm unlocking actuation of the safety holding member.

10. A method of operating a door handle as set forth in claim 8, wherein: the method further comprises a step X, wherein the safety retaining member is provided with a pre-hook (3.4) and an elastic piece for applying a second acting force, the elastic piece is provided with a fixed end acting on the limiting seat and a free end acting on the safety retaining member, and the fixed end is blocked on the safety retaining member through the pre-hook (3.4) in an unassembled state and is released on the limiting seat in an assembled state.