CN115387690A - One-way damper for automobile electric tail gate stay bar - Google Patents

One-way damper for automobile electric tail gate stay bar Download PDF

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Publication number
CN115387690A
CN115387690A CN202211030924.7A CN202211030924A CN115387690A CN 115387690 A CN115387690 A CN 115387690A CN 202211030924 A CN202211030924 A CN 202211030924A CN 115387690 A CN115387690 A CN 115387690A
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CN
China
Prior art keywords
driving shaft
ratchet
driven shaft
piece
damper
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211030924.7A
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Chinese (zh)
Inventor
何杰
刘敏
余文凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vast China Co ltd
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Vast China Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vast China Co ltd filed Critical Vast China Co ltd
Priority to CN202211030924.7A priority Critical patent/CN115387690A/en
Publication of CN115387690A publication Critical patent/CN115387690A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/16—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with friction brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/531—Doors
    • E05Y2900/532—Back doors or end doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/548—Trunk lids

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  • Vibration Dampers (AREA)

Abstract

The invention belongs to the technical field of automobile electric tail gates, and particularly relates to a one-way damper for an automobile electric tail gate stay bar, which comprises a damper body, a driven shaft, a driving shaft and a first pressure providing piece, wherein the driven shaft is connected with the damper body, the driven shaft, the driving shaft and the first pressure providing piece are sequentially arranged along the telescopic direction of the tail gate stay bar, the opposite end surfaces of the driven shaft and the driving shaft are respectively provided with a first ratchet and a second ratchet, and the first pressure providing piece is used for applying pressure to the driving shaft and the driven shaft so as to enable the second ratchet and the first ratchet to be meshed with each other; the lead screw and the driving shaft of tail gate vaulting pole are connected, and when the tail gate vaulting pole shortened, the lead screw drove the driving shaft forward rotation, and the driving shaft drives driven shaft and attenuator body rotation in proper order through first ratchet and second ratchet intermeshing, and when the tail gate vaulting pole extended, the lead screw drove driving shaft reverse rotation, and the driving shaft skids for the driven shaft through first ratchet and the cooperation of second ratchet.

Description

One-way damper for automobile electric tail gate stay bar
Technical Field
The invention belongs to the technical field of automobile electric tail gates, and particularly relates to a one-way damper for an automobile electric tail gate stay bar.
Background
The electric tail gate of the automobile adopts a single electric stay bar driving system or a double electric stay bar driving system, the existing electric stay bar mainly comprises a motor, a speed reducer, a damper, a screw rod, a stay bar spring and the like, the motor power drives the screw rod to rotate through the speed reducer and the damper in sequence, the screw rod converts the rotary motion into linear motion so as to drive the tail gate of the automobile to be opened and closed, and the stay bar spring is used for balancing the weight of most of the tail gates of the automobile. The damper of the existing electric stay bar is a two-way damper, namely a two-way friction torque is provided in the opening and closing process of the automobile tail gate, for example, a damping structure of the electric tail gate stay bar disclosed in the existing patent application CN110630134 a.
In order to better hover when the automobile tail gate is closed, the electric stay bar needs the damper to provide friction torque, and when the automobile tail gate is opened, the electric stay bar does not need the damper to provide friction torque. The existing bidirectional damper of the electric stay bar has the following defects: the existing bidirectional damper provides bidirectional friction torque, so that the load of the motor is increased, more electric energy is consumed, and the performance attenuation of the motor and the bidirectional damper is accelerated; when the automobile tail door is opened, the two-way damper consumes the elasticity of the stay bar spring, so that the elasticity output requirement of the stay bar spring is high, a larger stay bar spring is needed, and the occupied space of the stay bar spring is large.
Disclosure of Invention
The invention provides a one-way damper for an electric tail gate stay bar of an automobile, aiming at solving the problem that the energy consumption of a two-way damper in the prior art is large.
In order to solve the technical problems, the invention adopts the following technical scheme that the one-way damper for the electric tail gate stay bar of the automobile comprises a damper body, a driven shaft, a driving shaft and a first pressure providing piece, wherein the driven shaft is connected with the damper body, the driven shaft, the driving shaft and the first pressure providing piece are sequentially arranged along the telescopic direction of the tail gate stay bar, the opposite end surfaces of the driven shaft and the driving shaft are respectively provided with a first ratchet and a second ratchet, and the first pressure providing piece is used for applying pressure to the driving shaft and the driven shaft so as to enable the second ratchet and the first ratchet to be meshed with each other;
the screw rod of the tail gate supporting rod is connected with the driving shaft, when the tail gate supporting rod is shortened, the screw rod drives the driving shaft to rotate in the forward direction, the driving shaft sequentially drives the driven shaft and the damper body to rotate through mutual meshing of the first ratchet and the second ratchet, when the tail gate supporting rod extends, the screw rod drives the driving shaft to rotate in the reverse direction, and the driving shaft slips relative to the driven shaft through matching of the first ratchet and the second ratchet.
Preferably, a first counter bore is formed in the end face of the driven shaft, and the first ratchet is arranged in the first counter bore. The first counter bore plays a role in guiding axial movement of the driving shaft, and reliability and stability of the driving shaft and the driven shaft in matched transmission through the first ratchet and the second ratchet are improved.
Furthermore, a second counter bore is formed in the end face of the driving shaft, a limiting plate is arranged on the screw rod, and the first pressure providing piece is located between the second counter bore and the limiting plate. The second counter bore plays the flexible guide effect of first pressure providing part, improves first pressure providing part and exerts pressure to driving shaft and driven shaft, makes the reliability and the stability of first ratchet and second ratchet intermeshing, improves driving shaft and driven shaft promptly through first ratchet and second ratchet cooperation driven reliability and stability.
Further, the first pressure providing piece is a first pressure spring, and the first pressure spring is sleeved on the screw rod. The first pressure spring is selected, so that the first pressure providing piece can be conveniently installed, and the reliability and the stability of the telescopic function of the first pressure providing piece are ensured.
Preferably, a first external spline is arranged on the screw rod, and a first internal spline matched with the first external spline is arranged on the driving shaft. The lead screw and the driving shaft are convenient to connect, and the spline connection structure is stable and reliable.
Preferably, the damper body comprises a shell, a second pressure providing piece and at least one dynamic friction piece, wherein fixed friction pieces are arranged on two sides of the dynamic friction piece, the fixed friction pieces and the second pressure providing piece are arranged in the shell and are tightly pressed in the shell through an end cover, the second pressure providing piece is used for applying pressure to the fixed friction pieces and the dynamic friction pieces to enable the fixed friction pieces and the dynamic friction pieces to be in contact with each other to generate friction, and the driven shaft is connected with the dynamic friction pieces. The damper body is the same as the internal structure of the existing two-way damper, and the one-way damper is skillfully improved on the basis of the existing two-way damper, so that the one-way damper is convenient to process and manufacture, and the cost is reduced.
Further, the outer peripheral of driven shaft outwards extends has first anticreep arch, the outer peripheral of driving shaft outwards extends has the second anticreep arch, the dynamic friction piece, first anticreep arch, the second anticreep arch and the end cover in the outside set gradually. The driven shaft and the driving shaft are effectively prevented from being separated from the one-way damper, and the driven shaft and the driving shaft are ensured to run reliably and stably.
Furthermore, a second external spline is arranged on the driven shaft, and a second internal spline matched with the second external spline is arranged on the dynamic friction sheet. The driven shaft and the movable friction plate are convenient to connect, and the spline connection structure is stable and reliable.
Furthermore, the number of the dynamic friction plates is 1-3, and the number of the fixed friction plates is 2-4. The damping effect of the one-way damper is ensured, and the cost is reduced.
Further, the second pressure providing piece is a second pressure spring, a limiting ring groove is formed in the end cover, and one end of the second pressure spring is located in the limiting ring groove. And the second pressure spring is selected, so that the second pressure providing piece is convenient to mount, and the reliability and the stability of the telescopic function of the second pressure providing piece are ensured.
Has the beneficial effects that: the one-way damper for the automobile electric tail gate stay bar has a simple structure, can be improved on the basis of the existing two-way damper, is low in cost, and skillfully designs the first pressure providing piece to apply pressure to the driving shaft and the driven shaft, so that the second ratchet of the driving shaft and the first ratchet of the driven shaft are meshed with each other, the driving shaft can drive the driven shaft to rotate only when the tail gate stay bar is shortened (in the closing process of an automobile tail gate), and the driven shaft drives the damper body to rotate to achieve a damping effect; and the driving shaft skids for the driven shaft when tail-gate vaulting pole extension (car tail-gate opening process), the driven shaft can't drive the attenuator body rotatory, the attenuator body does not have the damping effect this moment, reduce the motor consumption of tail-gate vaulting pole by a wide margin, save the electric energy by a wide margin, effectively avoid the performance decay of motor and this one-way attenuator in addition, with protection motor and this one-way attenuator, and under the prerequisite of tail-gate vaulting pole same performance, can reduce the output demand of vaulting pole spring force, thereby can let the design of vaulting pole spring more compact.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a perspective exploded view of a one-way damper for an electric tailgate stay of an automobile according to the present invention;
FIG. 2 is a schematic perspective exploded view of the damper body and the driving shaft of the one-way damper for the electric tailgate stay of the automobile according to the present invention;
FIG. 3 is a schematic cross-sectional view of the one-way damper for the electric tailgate stay of the vehicle of the present invention;
in the figure: 1. the damper comprises a damper body, 11, a shell, 12, a second pressure spring, 13, a dynamic friction plate, 131, a second internal spline, 14, a fixed friction plate, 15, an end cover, 151, a limiting ring groove, 2, a driven shaft, 21, a first ratchet, 22, a first counter bore, 23, a first anti-falling protrusion, 24, a second external spline, 3, a driving shaft, 31, a second ratchet, 32, a second counter bore, 33, a first internal spline, 34, a second anti-falling protrusion, 4, a first pressure spring, 5, a lead screw, 51, a first external spline, 6 and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, a one-way damper for an electric tailgate brace of an automobile comprises a damper body 1, a driven shaft 2, a driving shaft 3 and a first pressure providing member, wherein the driven shaft 2 is connected with the damper body 1, the driven shaft 2, the driving shaft 3 and the first pressure providing member are sequentially arranged along the extension direction of the tailgate brace, opposite end surfaces of the driven shaft 2 and the driving shaft 3 are respectively provided with a first ratchet 21 and a second ratchet 31, the first pressure providing member is used for applying pressure to the driving shaft 3 and the driven shaft 2 to enable the second ratchet 31 and the first ratchet 21 to be meshed with each other, and the first ratchet 21 and the second ratchet 31 are meshed with each other and can only rotate in one way similar to a ratchet mechanism; the lead screw 5 of tail-gate vaulting pole is connected with driving shaft 3, works as when the tail-gate vaulting pole shortens, lead screw 5 drives driving shaft 3 forward rotation, just driving shaft 3 drives driven shaft 2 and attenuator body 1 rotation in proper order through first ratchet 21 and second ratchet 31 intermeshing, and this one-way attenuator is rotatory to play the damping effect this moment promptly, works as when the tail-gate vaulting pole is elongated, lead screw 5 drives driving shaft 3 reverse rotation, just driving shaft 3 skids for driven shaft 2 through first ratchet 21 and the cooperation of second ratchet 31, and this one-way attenuator is static not have the damping effect this moment promptly, and the damping direction of rotation and the static direction of rotation of this one-way attenuator can be set for according to the demand.
In order to ensure the transmission of the reliability and stability of the matching of the driving shaft 3 and the driven shaft 2 through the first ratchet 21 and the second ratchet 31, in the embodiment, a first counter bore 22 is formed in the end face of the driven shaft 2, the first ratchet 21 is arranged in the first counter bore 22, and the first counter bore 22 plays a role in guiding the axial movement of the driving shaft 3; a second counter bore 32 is formed in the end face of the driving shaft 3, a limiting plate 6 is arranged on the lead screw 5, and the first pressure providing piece is located between the second counter bore 32 and the limiting plate 6; the first pressure providing piece is a first pressure spring 4, the first pressure spring 4 is sleeved on the screw rod 5, and the second counter bore 32 plays a role in guiding the extension of the first pressure providing piece; the screw rod 5 is provided with a first external spline 51, and the driving shaft 3 is provided with a first internal spline 33 matched with the first external spline 51.
The damper body 1 can be the same as the internal structure of the existing two-way damper, so that the one-way damper is ingeniously improved on the basis of the existing two-way damper, specifically, in this embodiment, the damper body 1 includes a housing 11, a second pressure providing member and at least one dynamic friction plate 13, both sides of the dynamic friction plate 13 are provided with a fixed friction plate 14, the dynamic friction plate 13, the fixed friction plate 14 and the second pressure providing member are all arranged in the housing 11 and are pressed tightly in the housing 11 through an end cover 15, the second pressure providing member is used for applying pressure to the fixed friction plate 14 and the dynamic friction plate 13 to enable the fixed friction plate 14 and the dynamic friction plate 13 to be contacted to generate friction force, the driven shaft 2 is connected with the dynamic friction plate 13, specifically, the driven shaft 2 is provided with a second external spline 24, and the dynamic friction plate 13 is provided with a second internal spline 131 matched with the second external spline 24; the number of the dynamic friction plates 13 is 1 to 3, the number of the fixed friction plates 14 is 2 to 4, the number of the dynamic friction plates 13 in this embodiment is 2, and the number of the fixed friction plates 14 is 3; the second pressure providing member of this embodiment is a second pressure spring 12, the end cover 15 has a limiting ring groove 151, and one end of the second pressure spring 12 is located in the limiting ring groove 151.
In order to effectively avoid the driven shaft 2 and the driving shaft 3 to be separated from the one-way damper and ensure the reliable and stable operation of the driven shaft 2 and the driving shaft 3, in this embodiment, the outer periphery of the driven shaft 2 extends outwards to form a first anti-falling protrusion 23, the outer periphery of the driving shaft 3 extends outwards to form a second anti-falling protrusion 34, and the dynamic friction plate 13, the first anti-falling protrusion 23, the second anti-falling protrusion 34 and the end cover 15 on the outermost side are sequentially arranged.
The working principle is as follows:
when the tail gate support rod extends to open the tail gate of the automobile, the screw rod 5 drives the driving shaft 3 to rotate reversely, the driving shaft 3 slips relative to the driven shaft 2 through the matching of the first ratchet 21 and the second ratchet 31, and the driven shaft 2 cannot be driven to rotate, namely, the one-way damper is static and has no damping effect;
when the tail gate supporting rod is shortened to close the automobile tail gate, the screw rod 5 drives the driving shaft 3 to rotate in the forward direction, the driving shaft 3 drives the driven shaft 2 to rotate through mutual meshing of the first ratchet 21 and the second ratchet 31, the driven shaft 2 rotates to drive the dynamic friction plate 13 to rotate relative to the static friction plate, friction torque is provided, and the one-way damper rotates to achieve a damping effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (10)

1. The utility model provides an electronic tail-gate of car is one-way attenuator for vaulting pole which characterized in that: the damper comprises a damper body (1), a driven shaft (2), a driving shaft (3) and a first pressure providing piece, wherein the driven shaft (2) is connected with the damper body (1), the driven shaft (2), the driving shaft (3) and the first pressure providing piece are sequentially arranged along the telescopic direction of a tail gate stay bar, a first ratchet (21) and a second ratchet (31) are respectively arranged on the opposite end surfaces of the driven shaft (2) and the driving shaft (3), and the first pressure providing piece is used for applying pressure to the driving shaft (3) and the driven shaft (2) to enable the second ratchet (31) and the first ratchet (21) to be meshed with each other;
lead screw (5) and driving shaft (3) of tail-gate vaulting pole are connected, work as when the tail-gate vaulting pole shortens, lead screw (5) drive driving shaft (3) forward rotation, just driving shaft (3) are rotatory through first ratchet (21) and second ratchet (31) intermeshing drive driven shaft (2) and attenuator body (1) in proper order, work as when the tail-gate vaulting pole is elongated, lead screw (5) drive driving shaft (3) antiport, just driving shaft (3) are slided for driven shaft (2) through first ratchet (21) and second ratchet (31) cooperation.
2. The one-way damper for the stay of the electric tailgate of the automobile according to claim 1, characterized in that: the end face of the driven shaft (2) is provided with a first counter bore (22), and the first ratchet (21) is arranged in the first counter bore (22).
3. The one-way damper for the stay of the electric tailgate of the automobile according to claim 2, characterized in that: the end face of the driving shaft (3) is provided with a second counter bore (32), the screw rod (5) is provided with a limiting plate (6), and the first pressure providing piece is located between the second counter bore (32) and the limiting plate (6).
4. The one-way damper for the stay of the electric tailgate of the automobile according to claim 3, characterized in that: the first pressure providing piece is a first pressure spring (4), and the first pressure spring (4) is sleeved on the screw rod (5).
5. The one-way damper for the stay of the electric tailgate of the automobile according to claim 1, characterized in that: the screw rod (5) is provided with a first external spline (51), and the driving shaft (3) is provided with a first internal spline (33) matched with the first external spline (51).
6. The one-way damper for the automotive electric tailgate stay according to any one of claims 1 to 5, characterized in that: damper body (1) includes shell (11), second pressure and provides piece and at least one dynamic friction piece (13), the both sides of dynamic friction piece (13) all are provided with decides friction disc (14), dynamic friction piece (13), decide friction disc (14), second pressure provide the piece and all set up in shell (11) to compress tightly in shell (11) through end cover (15), the second pressure provides the piece and is used for to deciding friction disc (14) and dynamic friction piece (13) applieation pressure, makes decide friction disc (14) and dynamic friction piece (13) contact production frictional force, driven shaft (2) are connected with dynamic friction piece (13).
7. The one-way damper for the stay of the electric tailgate of the automobile according to claim 6, characterized in that: the periphery of driven shaft (2) outwards extends has first anticreep arch (23), the periphery of driving shaft (3) outwards extends has second anticreep arch (34), the friction disc (13), first anticreep arch (23), second anticreep arch (34) and end cover (15) that move in the outside set gradually.
8. The one-way damper for the stay of the electric tailgate of the automobile according to claim 6, characterized in that: the driven shaft (2) is provided with a second external spline (24), and the dynamic friction plate (13) is provided with a second internal spline (131) matched with the second external spline (24).
9. The one-way damper for the stay of the electric tailgate of the automobile according to claim 6, characterized in that: the number of the dynamic friction plates (13) is 1-3, and the number of the fixed friction plates (14) is 2-4. The damping effect of the one-way damper is ensured, and the cost is reduced.
10. The one-way damper for the stay of the electric tailgate of the automobile according to claim 6, characterized in that: the second pressure providing piece is a second pressure spring (12), a limiting ring groove (151) is formed in the end cover (15), and one end of the second pressure spring (12) is located in the limiting ring groove (151).
CN202211030924.7A 2022-08-26 2022-08-26 One-way damper for automobile electric tail gate stay bar Pending CN115387690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211030924.7A CN115387690A (en) 2022-08-26 2022-08-26 One-way damper for automobile electric tail gate stay bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211030924.7A CN115387690A (en) 2022-08-26 2022-08-26 One-way damper for automobile electric tail gate stay bar

Publications (1)

Publication Number Publication Date
CN115387690A true CN115387690A (en) 2022-11-25

Family

ID=84122449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211030924.7A Pending CN115387690A (en) 2022-08-26 2022-08-26 One-way damper for automobile electric tail gate stay bar

Country Status (1)

Country Link
CN (1) CN115387690A (en)

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