Integrated unlocking actuator

Abstract

The invention discloses an integrated unlocking actuator which comprises an insertion rod inserted into the actuator, the insertion rod is inserted from one side by a plunger latch mechanism to implement electric locking / unlocking, and the integrated unlocking actuator is characterized in that the plunger latch mechanism realizes the insertion type locking / unlocking function on the insertion rod by an electric driving mechanism through a coaxial transmission component. On one hand, the output end and the input end are coaxial through a planet wheel transmission structure, a motor gearbox is simplified, the transmission efficiency is improved, the size of the actuator is improved, on the other hand, the labyrinth lock is separately arranged on the side portion of the insertion rod, functional parts are modularized and miniaturized, and platform type design popularization is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle cover locking actuators, in particular to an integrated unlocking actuator. BACKGROUND

[0002] US patent publication No. US11235659B2 discloses an actuation device for opening and closing a cover in or on a vehicle, comprising a housing, a rotatable plunger, a spring preloading the plunger into a discharge position, and at least one actuation groove in an actuation sleeve into which the plunger can be introduced. During axial relative movement between the actuation sleeve and the plunger, a blocking device blocks movement of the plunger into the discharge position to hold the plunger in a locked position, and an actuator releases the blocking device from the blocking position. This mechanism implements electric locking with a labyrinth movement structure of the rotating plunger, with the disadvantages of a large number of parts, complex features of individual parts, and low degree of modularization of functional parts.

[0003] Chinese invention patent publication No. CN104145070A discloses an actuation device, in which a locking mechanism driven by a crank and connecting rod separately locks a latch. This scheme modularly implements the electric locking function, but the crank and connecting rod structure with a turbine groove has energy loss during transmission, affecting transmission efficiency. At the same time, its reciprocating motion also affects its durability and reliability due to inertia. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the present application is to provide an integrated unlocking actuator to achieve the purpose of improving transmission efficiency to further miniaturize the actuator.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0006] An integrated unlocking actuator, comprising a plug rod inserted into the actuator, the plug rod being inserted from one side by a lock mechanism to implement electric locking / unlocking, the lock mechanism being driven by an electric drive mechanism to achieve the plug-in locking / unlocking function of the plug rod through a coaxial transmission member.

[0007] Further, the lock mechanism has a lock pin for insertion into the plug rod and engaged with the output end of the coaxial transmission member, the central axis of the lock pin being perpendicular to the axis of the output end of the coaxial transmission member.

[0008] Further, the coaxial transmission member is a planetary gear structure transmission member.

[0009] Further, the coaxial transmission member comprises a fixed frame with an inner ring gear and a transmission frame pivoted coaxially with the fixed frame as a planet carrier, the transmission frame is provided with a second transmission wheel in synchronization and used for driving the locking pin, the transmission frame and the inner ring gear are driven through a first transmission wheel as a planet wheel, the electric drive mechanism is driven by the motor gear engaging with the first transmission wheel.

[0010] Further, the transmission frame is further provided with a pull rope connected with the transmission frame in the circumferential direction to realize manual rotation of the transmission frame.

[0011] Further, a push rod and a first elastic member are arranged at the bottom of the insertion rod, and the first elastic member is loaded when the push rod is pushed into the actuator by the insertion rod.

[0012] Further, a labyrinth lock is arranged at the side of the insertion rod, and the labyrinth lock implements manual locking / unlocking of the insertion rod in the unlocked state of the locking mechanism.

[0013] Further, a protruding pin is arranged on the outer surface of the insertion rod, an arc-shaped opening is arranged on the side adjacent to the insertion rod of the labyrinth lock, the protruding pin is arranged in the labyrinth space between the arc-shaped opening and the protruding structure on the labyrinth lock, and the locking / unlocking work is implemented by guiding / limiting the protruding pin through the labyrinth space.

[0014] Further, the protruding structure comprises a first protruding structure, a second protruding structure and a third protruding structure, a plurality of grooves parallel to the extension direction of the axis of the insertion rod and inclined grooves communicating between the plurality of grooves are formed between the first protruding structure, the second protruding structure and the third protruding structure, when the insertion rod is inserted into the actuator according to the preset stroke, the protruding pin moves in the grooves and the inclined grooves and enters a locking position located below the third protruding structure, when the insertion rod is further inserted into the actuator, the protruding pin returns to the initial position through the grooves and the inclined grooves.

[0015] Further, the labyrinth shaft and the labyrinth housing are in a split structure.

[0016] The beneficial effects of the present application are:

[0017] The integrated unlocking actuator provided by the present application has the following advantages: the planet wheel transmission structure is used to simplify the motor gear box and improve the transmission efficiency and the volume of the actuator, the labyrinth lock is arranged on the side of the insertion rod to modularize and miniaturize the functional parts and facilitate platform design and promotion. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0019] Figure 1 is a structural schematic diagram of the present application.

[0020] Figure 2 is an exploded view of the present application.

[0021] Figure 3 is a structural schematic diagram of the coaxial transmission member.

[0022] Figure 4 is Figure 1 another side view.

[0023] Figure 5 is a structural schematic diagram of the insertion rod.

[0024] Figure 6 is a partial view of the labyrinth lock.

[0025] Figure 7 is a schematic diagram of the insertion rod and the labyrinth lock.

[0026] Figure 8 is a plan view of the labyrinth space. DETAILED DESCRIPTION

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the above description is simplified for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] The exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the present application can be presented in various ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals represent the same or functionally equivalent elements.

[0029] Referring to Figure 1 , the electric drive mechanism 100 and the insertion rod mechanism 200 are closely fitted and arranged in a vertical direction, forming a compact space structure. The latch mechanism 300 is arranged at the top of the electric drive mechanism 100, which has a planetary gear transmission structure inside, and moves in the direction of the insertion rod mechanism 200 under the drive of the electric drive mechanism 100 to perform locking / unlocking work on it.

[0030] Referring toFigure 2 The push rod mechanism 200 has a push rod 212 arranged at the lower part and a first elastic member 211, the push rod 221 pushes the push rod 212 into the first cavity 111 from above, and the first elastic member 211 is loaded under force. The latch mechanism 300 includes a transmission frame 320 and a second transmission wheel 321 on the upper part thereof; a first transmission wheel 340 on the lower part thereof, a fixed frame 350 and an inner ring gear 351 on the inner surface thereof, a motor gear 131 extending from the bottom of the fixed frame 350, and a strip-shaped latch 310 inserted into the push rod 221 through transverse movement to implement locking. One end of the latch 310 is provided with a latch pin 311 directly inserted into the latch pin groove 222, and a transverse groove 312 extending in the long direction of the latch 310 and having a rack on the inner surface is formed in the latch 310, the axis of the transverse groove 312 is perpendicular to the axial direction of the second transmission wheel 321, and the second transmission wheel 321 is inserted into the transverse groove 312 to mesh with the rack to drive the latch 310. The motor gear 131 is arranged on the motor 130, and the latch mechanism 300 is sequentially packaged in the second cavity 112 together with the upper cover 120.

[0031] In combination with reference Figure 3 The transmission frame 320 outputs torque outward as a planetary carrier, the second transmission wheel 321 is fixed on the upper part of the transmission frame 320 and rotates together with the transmission frame 320, the first transmission wheel 340 is pivoted below the transmission frame 320 and meshes with the inner ring gear 351, and the motor gear 131 coaxial with the second transmission wheel 321 extends into the fixed frame 350 from the bottom and meshes with the first transmission wheel 340. On the one hand, the vertical arrangement of the motor in the transmission structure and the coaxial input / output make the transmission structure more compact and the actuator smaller. On the other hand, the structure of multiple planetary gears in the given space has the advantages of stable operation, low noise and large transmission ratio in the case of large torque, and can be applied to high-power transmission and high-density transmission working scenes.

[0032] In an embodiment, a second elastic member 330 is connected between the transmission frame 320 and the fixed frame 350, the second elastic member 330 is loaded during the one-way rotation of the transmission frame 320, and a pull rope 322 is further connected to the transmission frame 320, the pull rope 322 is used as a manual driving end to drive the transmission frame 320 to rotate, after the latch pin 311 is moved to unlock, the elastic force of the second elastic member 330 is used to restore the latch. Further, a plurality of clamping grooves 323 are arranged on the radial outer periphery of the transmission frame 320, and a plurality of clamping buckles 352 extending upward are arranged on the fixed frame 350. During assembly, the clamping buckles 352 are clamped and pre-fixed with the clamping grooves 323 to ensure that the second elastic member 330 of the torsional spring type cannot be automatically reset, and after the first sequence assembly is completed, the latch 310 is pressed downward from the top to push the transmission frame 320 into the fixed frame 350 and press them tightly.

[0033] In combination with reference Figure 4 to Figure 6A labyrinth lock 400 is also fixed on the upper cover 120, which is used to manually unlock the latch mechanism 300 by pushing the insertion rod 221. A protruding pin 223 is arranged on the outer surface of the insertion rod 221 to cooperate with the labyrinth lock 400. The labyrinth lock 400 is arranged on the upper cover 120 by a semi-opened labyrinth housing 420, which has an arc-shaped opening 421 on the side adjacent to the insertion rod 221, and a labyrinth shaft 410 is arranged inside the labyrinth housing 420 in parallel with the axis direction of the insertion rod 221. A plurality of protruding structures are arranged on the circumferential surface of the labyrinth shaft 410, which enclose a labyrinth space 407 for the protruding pin 223 to move in, thereby achieving the locking function by guiding / limiting the position of the protruding pin 223.

[0034] With reference to the drawings in detail Figure 7 and Figure 8 The protruding structures include a first protruding structure 411, a second protruding structure 412, and a third protruding structure 413. In fact, the labyrinth space 407 is composed of a plurality of grooves 405 extending in the axis direction of the insertion rod 221 and inclined grooves 406 for connecting the grooves 405. The protruding pin 223 moves downward between the first side wall 422 and the third protruding structure 413, and after contacting the first protruding structure 411, it moves obliquely between the first protruding structure 411 and the second protruding structure 412 to complete the first stroke 402. When the insertion rod 221 is released, the protruding pin 223 moves reversely under the reverse thrust of the first elastic member 211 to the locking position 401 below the third protruding structure 413 to achieve the locking function. Continuing to press the insertion rod 221 makes the protruding pin 223 move downward, and after contacting the second protruding structure 412, it moves obliquely between the second protruding structure 412 and the second side wall 423 to complete the second stroke 403. When the insertion rod 221 is released, the protruding pin 223 moves between the third protruding structure 413 and the second side wall 423 to the initial position 404 under the reverse thrust of the first elastic member 211, completing a locking / unlocking cycle.

[0035] In an embodiment, the labyrinth shaft 410 and the labyrinth housing 420 are in a split structure, i.e., when the labyrinth manual unlocking function is not needed, the labyrinth shaft 410 is removed, simplifying the structure and facilitating assembly.

[0036] The singular forms "a", "said", and "the" used in the specification are intended to encompass both singular and plural forms, unless otherwise clearly indicated. The terms "including", "containing", and "comprising" used in the specification mean the presence of the stated features but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the associated listed items.

[0037] In the specification, when it is said that an element is "on", "fixed to", "connected to", "joined to" or the like another element, it can be directly on, fixed to, connected to, joined to or in contact with the other element, or an intervening element can be present. In the specification, when it is said that one feature is arranged "adjacent" to another feature, it can mean that the one feature has a portion that overlaps the adjacent feature or a portion that is above or below the adjacent feature.

[0038] It is to be understood that the terms "first", "second", and so on can be used herein to describe various elements, but the elements should not be limited by these terms. The terms are only used to distinguish one element from another. Thus, a first element can be called a second element without departing from the teachings of the present concept.

Claims

1. An integrated unlocking actuator comprising a plug inserted into the actuator, the plug being inserted into the implementation of an electric lock / unlock from one side by a latch mechanism, characterized in that, The latch mechanism is electrically driven by a coaxial transmission member to achieve the insertion locking / unlocking function of the insertion rod.

2. An integrated unlock actuator as defined in claim 1, wherein, The latch mechanism has a locking pin for insertion into the insertion rod and engagement with the output end of the coaxial transmission member, and the central axis of the locking pin is perpendicular to the axis of the output end of the coaxial transmission member.

3. An integrated unlock actuator as defined in claim 2, wherein, The coaxial transmission member is a planetary gear structure transmission member.

4. An integrated unlock actuator as defined in claim 3, wherein, The coaxial transmission member includes a fixed frame with an inner ring gear and a transmission frame coaxially pivoted with the fixed frame as a planet carrier, the transmission frame is provided with a second transmission wheel in synchronization and for driving the locking pin, the transmission frame and the inner ring gear are driven by a first transmission wheel as a planet wheel, and the motor gear of the electric drive mechanism is engaged with the first transmission wheel to achieve electric drive.

5. An integrated unlock actuator as defined in claim 4, wherein, The transmission frame is also provided with a pull rope connected to the transmission frame in the circumferential direction to achieve manual rotation of the transmission frame.

6. An integrated unlock actuator as claimed in claim 3 or 4, wherein, A push rod and a first elastic member are arranged at the bottom of the insertion rod, and the first elastic member is loaded when the push rod is pushed into the actuator by the insertion rod.

7. An integrated unlock actuator as in claim 6, wherein, A labyrinth lock is also arranged at the side of the insertion rod, which implements manual locking / unlocking of the insertion rod in the unlocked state of the latch mechanism.

8. An integrated unlock actuator as in claim 7, wherein, A protruding pin is arranged on the outer surface of the insertion rod, an arc-shaped opening is arranged on the side adjacent to the insertion rod of the labyrinth lock, the protruding pin is arranged in the labyrinth space between the arc-shaped opening and the protruding structure on the labyrinth lock, and the locking / unlocking work is implemented by the guidance / limiting of the protruding pin in the labyrinth space.

9. An integrated unlock actuator as in claim 8, wherein, The protruding structure includes a first protrusion, a second protrusion and a third protrusion, and a plurality of grooves parallel to the extension direction of the axis of the insertion rod and inclined grooves connecting the plurality of grooves are formed between the first protrusion, the second protrusion and the third protrusion, when the insertion rod is inserted into the actuator according to the preset stroke, the protruding pin moves in the grooves and the inclined grooves and enters the locking position located below the third protrusion, when the insertion rod is further inserted into the actuator, the protruding pin returns to the initial position through the grooves and the inclined grooves.

10. An integrated unlock actuator as defined in claim 7, wherein, The labyrinth shaft and the labyrinth housing are of split structure.

11. An integrated unlock actuator as defined in claim 4, wherein, A plurality of clamping grooves are arranged on the outer periphery of the transmission frame, and a plurality of clamping buckles upwardly protruding and used for opposing the plurality of clamping grooves are arranged on the fixed frame, and the clamping buckles implement pre-fixing during assembly of the fixed frame and the transmission frame.

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