CN108952375A - A kind of latch assembly for motor vehicles - Google Patents

Abstract

The invention discloses a kind of latch assemblies for motor vehicles, including latch mechanism, power operation latch release mechanism and eccentric spring biasing resetting mechanism, power operated latch release mechanism power release operation during can operate with by resetting-mechanism from first cross center operations state be converted to second cross center operations state.The present invention can provide increased applicability simultaneously, while reduce cost and complexity.

Description

A kind of latch assembly for motor vehicles

Technical field

This disclosure generally relates to the power closed systems of motor vehicles, more specifically, this disclosure relates to one kind is used for The latch assembly of motor vehicles.

Background technique

Passenger doors on motor vehicles are usually mounted on vehicle body by a pair of of door hinge, for surrounding substantially vertical pivot It swings.The passenger doors (" swing door ") of this swing have had realized that some problems, for example, when vehicle is located on inclined surface When, since the weight of door is uneven, swing door or opens too far or swing and close.In order to solve this problem, most of Passenger doors have certain type of pawl or inspection body to be integrated at least one of door hinge, and the function of the door hinge is Inhibit the uncontrolled pendulum motion of door by directly positioning and keeping door in one or more midway travel locations.It is complete Fully opened position.In some high-end vehicles, door hinge may include unlimited door inspection body, allow door in any need Open position be opened and keep check.Passenger doors equipped with door hinge have the advantages that one of a unlimited door inspection body It is that door can be positioned and retained in any position, is contacted to avoid with Adjacent vehicles or structure.

As further progress, power door drive system is developed, function is that passenger doors is made to pivot about axis Line is swung between its closed position and at least one open position.In general, electrically driven entryway actuation system includes one or more electricity " demonstration device " device of dynamic operation can be operated with by the rotation of motor for example, electric motor and rotate to linear transformation device It transfers out and is converted into tensile translational motion.Member.In most of arrangements, motor and conversion equipment are mounted on passenger doors Interior, the distal end of extending component is fixedly secured on vehicle body.One example of power supply door drive system is in the general U.S. No. 9174517 disclose a kind of power operated apparatus for demonstrating, which, which has, rotates to linear transformation device, are configured to wrap Include the internal screw thread driving nut that engagement is engaged by the external screw-thread lead screw of motor rotation driving and with lead screw, and easy member. Therefore, rotation speed and the direction of lead screw are controlled, thus control driving nut and telescopic member translational motion speed and Direction, to control pendulum motion of the passenger doors between its open position and closed position.

The high-end vehicles for being equipped with power door drive system are further equipped with the one or more dynamic characteristics of usually offer The swing door of latch assembly, for example, the fixed and moving power release of power lock and power firmly grasp function.Therefore, it is necessary to coordinating power operations The operation of display device and power function associated with latch assembly.For example, it is desired to coordinate power operated propeller system Driving, car door is moved to from its closed position by its open position by the operation of power release mechanism, to ensure gunlock The ratchet of structure has completely disengaged vehicle, forward not under fire further, it is necessary to discharge the Reset of power release mechanism, until Enough movements occur for door, to prevent the unexpected locking of ratchet.

In view of the foregoing, it is still desirable to it develops the mountable power waved in door system in power and discharges latch assembly, And there is power release mechanism, which is configured as promoting the prior art, while providing increased applicability, Cost and complexity are reduced simultaneously.

Technical solution

The invention mainly solves the technical problem of providing a kind of latch assemblies for motor vehicles, which is characterized in that It include: latch mechanism, the latch mechanism has the ratchet that can be moved between striker catching position and striker releasing position, Pawl can move between ratchet holding position and ratchet release position, and the ratchet holding position is used to ratchet being maintained at it Striker catching position is for allowing ratchet to be moved to its striker releasing position, for biasing ratchet towards its striker releasing position Ratchet biasing member and pawl biasing member for biasing pawl towards its ratchet holding position；Latch release machine Structure has the gear and power operated actuator for being operably connected to the pawl, the power operated actuator It can operate so that the gear is located at the resting position rotation in its ratchet holding position from the pawl in a first direction The actuated position being located therein to the pawl is in ratchet release position；And resetting-mechanism, the resetting-mechanism can be in the first mistakes It is operated under center situation the gear is mechanically maintained at its actuated position and loading spring bias unit and can be Operation is under second mistake center situation to discharge the gear and the spring biasing device is allowed to be rotated in second direction last time To its resting position.

Optionally, wherein power operated actuator is operable motor, can be quiet from its by the first rotating range Stop bit, which is set, rotates to its actuated position, so that resetting-mechanism be shifted from its second center situation excessively.To its first excessively middle heart shaped State, wherein motor operationally rotates in a second direction gear, by the rotary motion of the second range from its actuated position Into releasing position, so that resetting-mechanism is transferred to its second mistake state, i.e. center shape from its first center situation excessively State.

Optionally, wherein the first range of rotary motion be greater than rotary motion the second range.

Optionally, wherein the effect of spring biasing device is that gear is released to position to rotate to its resting position.

Optionally, wherein the spring biasing device pushes away drive rod including counter, and there is the anti-driven bar engagement to be formed in The drive part of cam portion on the gear, the anti-driven bar can when the gear is located at its resting position One position and the second position when the gear is located at its actuated position；And it is driven in the reverse direction bar spring, it is arranged to just It often is driven in the reverse direction bar by described and is biased towards its first position, and wherein described be driven in the reverse direction bar in response to described first The rotation set and be moved to gear of its first position from its resting position to its actuated position and play load and be driven in the reverse direction bar bullet The effect of spring.

The beneficial effects of the present invention are:

A kind of latch assembly for motor vehicles of the invention can provide increased applicability simultaneously, at the same reduce at Sheet and complexity.

Detailed description of the invention

Fig. 1 is equipped with the side view of the motor vehicles of the power door actuation system shaken between door and vehicle body positioned at preceding passenger Figure.

Fig. 2 is the diagrammatic view shown in FIG. 1 for swinging door system.

Embodiment

The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.

With reference first to Fig. 1, exemplary motor vehicle 10 is shown comprising pass through door upper hinge 16 and lower 18 pivot of door hinge The passenger doors 12 being installed to turning on vehicle body 14, the door door hinge 18 are shown in dotted line.As will be described in detail, door 12 includes Latch assembly 22, the latch assembly 22 can releasedly lock car door 12 relative to car body 14.Further there is illustrated powered door drives Dynamic system 20 is integrated in being pivotally connected between door 12 and vehicle body 14.Power door drive system 20 generally comprises power operated Door actuator, also referred to as " demonstration device " device are swung, is fixed in the internal cavities of passenger doors 12.In non-limiting arrangement In, showing device includes motor, which rotates to linear transformation mechanism, which is coupled to vehicle body 14 a part.Cause the controlled translational motion of extending component by the driven rotation of the spindle drive of electric motor, And then pivoting action of the controllable door 12 relative to vehicle body 14 between its opening and closing position.Although power door actuation system 20 only display in association with passenger doors 12, it will be recognized to those skilled in the art that power door actuation system 20 can also be with Any other door or elevator door of vehicle 10 are associated, such as rear passenger doors 17 and deck hatchcover 19.

Power door drive system 20 is illustrated in Fig. 2, including power swings door actuator or display device 32, is configured to Including motor 24, reducing gear train 26 (or gear-box 26), slip-clutch 28 and driving mechanism 30.Display device 32 is installed In the internal chamber 34 of door 12.Demonstration device device 32 further includes connector mechanism 36, the connector mechanism 36 be configured as by The telescopic member of driving mechanism 30 is connected to vehicle body 14.As shown, electronic control module 25 is communicated with motor 24, it is used for Provide it electrical control signal.Electronic control module May 25 includes microprocessor 27 and the executable meter being stored thereon The memory 29 of calculation machine readable instruction.

Although not clearly stating, electric motor 24 may include hall effect sensor, for monitoring car door 12 at it Open and close the position and speed during the movement between position.For example, one or more Hall effects can be provided and be positioned Inductive sensing device, to send indication motor 24 to electronic control module 25 based on the count signal from hall effect sensor The signal of rotation and speed movement, the hall effect sensor detect the target on motor output shaft.In the motor speed of sensing In the case where greater than threshold velocity, and when significant changes occur in current draw for current sensor, electronic control module May Determining user on the 25th also moves door 12 in motor 24 manually in operation, so that mobile door 12 is betted.Its open and close position It sets.Then it transmits a signal to motor 24 electronic control module May 25 and stops motor 24, it might even be possible to disengage slip-clutch 28 (provided that).On the contrary, when electronic control module 25 is in power supply opening or power-down mode, in this case, Electronic control system can take any movement appropriate, such as send signal to close motor 24.Therefore, mould is controlled electronically Block 25 receives the feedback from hall effect sensor, to ensure not having during door 12 is moved to open position from closed position It is in contact obstacle, vice versa.

As schematically shown in Fig. 2, electronic control module May 25 and remote key FOB 31 or inner/outer Bat-handle switch 33 communicates, for receiving the request from the user for opening or closing door 12.In other words, electronic control module 25 The command signal from remote-control key FOB 31 and/or inner/outer bat-handle switch 33 is received, plays on or off with start door 12 It closes.Electronic control module provides letter to motor upon receiving a command, in the form of pulse width modulated voltage (speed control) Number, to open motor and start the pivot-swivel in door 12.While providing signal, electronic control module 25 is also come from The feedback of the hall effect sensor of motor 24, to ensure that there is no contacting obstacle.If motor 24 will without barrier Continue to generate rotary force with driving spindle driving mechanism 30.Once door 12 is located at required position, motor 24 is closed, with gear-box 26 associated " self-locking " transmission devices make door 12 be continually maintained in the position.If user attempts for door 12 to be moved to different Operating position, motor 24 are finally discharged first against the movement of user (thus replicated gate audit function) and allow door It is moved to new desired locations.Equally, once stopped door 12, electronic control module 25 will provide required function to motor 24 Rate is to hold it in the position.If user provides sufficiently large movement input (that is, when user wants to close door to door 12 In the case of), electronic control module 25 will identify the movement by Hall-effect pulses, and continue to execute door 12 completely closes behaviour Make.Electronic control module 25 may also receive from ultrasonic sensor 35 or other proximity sensors (such as radar sensor) Additional input, the sensor are located in a part of door 12, such as on door reflecting mirror 65 or similar position.Ultrasonic wave passes Sensor 35 assesses barrier, such as another vehicle, tree or column, adjacent or near to door 12.It is if there is such barrier, then ultrasonic Wave sensor 35 sends signal to electronic control module 25, and electronic control module 25 will continue to close motor 24 to stop door 12 Movement, to prevent door 12 from bumping against barrier.This provides a kind of contactless obstacle avoidance system.In addition, optionally, can Contact obstacle avoidance system to be placed in vehicle 10, which includes the contact sensor 37 being mounted on door 12, such as with Moulding part 67 is associated, and operationally sends signal to control module 25.

The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features； And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (5)

1. a kind of latch assembly for motor vehicles characterized by comprising latch mechanism, the latch mechanism have energy Enough ratchets moved between striker catching position and striker releasing position, pawl can be in ratchet holding position and ratchet release position It is moved between setting, the ratchet holding position for ratchet to be maintained at its striker catching position is used to that ratchet to be allowed to be moved to it Striker releasing position, ratchet biasing member for biasing ratchet towards its striker releasing position and is used for pawl direction The pawl biasing member of its ratchet holding position biasing；Latch release mechanism has and is operably connected to the pawl Gear and power operated actuator, the power operated actuator can operate so that the gear in a first direction from The resting position that the pawl is located in its ratchet holding position rotates to actuated position that the pawl is located therein in ratchet Releasing position；And resetting-mechanism, operation is under the resetting-mechanism can cross center situation first mechanically to protect the gear It holds in its actuated position and loading spring bias unit and operates under center situation being crossed second to discharge the gear And the spring biasing device is allowed to be rotated in second party back up into its resting position.

2. a kind of latch assembly for motor vehicles according to claim 1, it is characterised in that: wherein power operation causes Dynamic device is operable motor, can rotate to its actuated position from its resting position by the first rotating range, thus will Resetting-mechanism is shifted from its second center situation excessively.To its first mistake center situation, wherein motor is operationally by gear edge Second direction rotation, releasing position is entered from its actuated position by the rotary motion of the second range, so as to by resetting-mechanism from Its first center situation excessively is transferred to its second mistake state, i.e. center state.

3. a kind of latch assembly for motor vehicles according to claim 2, it is characterised in that: wherein rotary motion First range is greater than the second range of rotary motion.

4. a kind of latch assembly for motor vehicles according to claim 2, it is characterised in that: wherein spring biasing fills The effect set is that gear is released to position to rotate to its resting position.

5. a kind of latch assembly for motor vehicles according to claim 4, it is characterised in that: wherein, the spring Bias unit pushes away drive rod, the driving portion for the cam portion that there is the anti-driven bar engagement to be formed on the gear including counter Point, the anti-driven bar first position when the gear is located at its resting position and can be activated when the gear is located at its Second position when position；And be driven in the reverse direction bar spring, be arranged to normally by it is described be driven in the reverse direction bar towards its One location bias, and wherein it is described be driven in the reverse direction bar be moved in response to the rotation of the first position its first position from The gear of its resting position to its actuated position plays the role of load and is driven in the reverse direction bar spring.