WO2022247297A1 - Mécanisme d'exécution de stationnement - Google Patents

Mécanisme d'exécution de stationnement Download PDF

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Publication number
WO2022247297A1
WO2022247297A1 PCT/CN2022/070448 CN2022070448W WO2022247297A1 WO 2022247297 A1 WO2022247297 A1 WO 2022247297A1 CN 2022070448 W CN2022070448 W CN 2022070448W WO 2022247297 A1 WO2022247297 A1 WO 2022247297A1
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WO
WIPO (PCT)
Prior art keywords
rotating rod
slope
chute
push rod
rod body
Prior art date
Application number
PCT/CN2022/070448
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English (en)
Chinese (zh)
Inventor
孙韬
王宗浩
董存
王昆
Original Assignee
上海纳铁福传动系统有限公司
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Publication date
Application filed by 上海纳铁福传动系统有限公司 filed Critical 上海纳铁福传动系统有限公司
Publication of WO2022247297A1 publication Critical patent/WO2022247297A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/107—Disposition of hand control with electrical power assistance

Definitions

  • the invention relates to the technical field of parking, in particular to a parking actuator.
  • the parking mechanism locks the transmission shaft or the rear wheel, which ensures the safety of the car.
  • Existing parking mechanism mainly is made up of executive motor, screw mechanism, awl block, ratchet and ratchet.
  • the executive motor converts the circular motion and torque of the executive motor into the linear motion and linear force of the cone block by using the principle of the screw. Rigid connection.
  • the pawl is stuck in the tooth groove of the ratchet, the ratchet cannot rotate, and the shaft and the wheel are locked to achieve the purpose of parking.
  • the object of the present invention is to provide a parking actuator, which improves the controllability and safety of the mechanism while reducing the production cost.
  • the present invention provides a parking actuator, comprising a ratchet, a pawl, a pushing device and a driving device
  • the pushing device includes a cone block
  • the driving device is connected with the pushing device, and drives the cone block to perform linear reciprocating motion
  • the cone block drives the teeth of the ratchet into or out of the tooth groove of the ratchet
  • the pushing device also includes a push rod, a rotating rod and a connecting part
  • the push rod includes a push rod body, the push rod One end of the rod body is connected with the driving device, and the other end is provided with a circle of sawtooth, each of which includes two oppositely arranged sawtooth slopes
  • the outer wall of the end of the push rod body far away from the driving device is uniformly provided with multiple a push rod guide key
  • the rotating rod comprises a rotating rod body, and the outer wall of one end of the rotating rod body is evenly provided with a plurality of rotating rod guiding keys along the circumferential direction, and one end of the rotating rod
  • the inner diameter of the groove ⁇ the outer diameter of the guide key of the rotating rod ⁇ the inner diameter of the second chute; a fixed block is arranged between the adjacent first chute and the second chute, and the fixed block is close to the rotating One end of the rod is provided with a fixed block inclined surface, and the inclined direction of the fixed block inclined surface is the same as that of the rotating rod inclined surface.
  • the driving device is a solenoid valve.
  • the electromagnetic valve includes a housing, an electromagnetic coil and a valve core arranged in the housing, and a spring is provided between the valve core and the housing; inside the casing.
  • the reset device is a spring.
  • one end of the first chute close to the rotating rod is provided with a chute slope, and the slope of the chute is in the same direction as the slope of the rotating rod.
  • the slopes of the sawtooth slope, the slope of the rotating rod and the slope of the fixed block are the same.
  • the end of the push rod body away from the driving device is provided with a cavity
  • the end of the rotating rod body away from the cone block is provided with an insertion part, and the insertion part is matched with the cavity .
  • the invention is beneficial in that the actuator motor and lead screw are replaced by low-cost solenoid valves, push rods, rotating rods and connecting parts, which can greatly reduce the cost of the mechanism and improve the controllability and durability of the mechanism.
  • the structure of the solenoid valve is simple, its input and output performance can be adjusted only by adjusting the coil. Compared with motors, it has greater adjustment freedom and can be applied to various special situations.
  • Fig. 1 is the schematic diagram of parking executive mechanism of the present invention
  • Fig. 2 is the connection schematic diagram of driving device and pushing device
  • Fig. 3 is the structural representation of push rod
  • Fig. 4 is the structural representation of rotating bar
  • Fig. 5 is an axial sectional view of the connecting portion
  • Fig. 6 is a schematic diagram of the internal structure of the connecting part
  • Fig. 7 is a schematic diagram of the guide key of the rotating rod in the connecting part in the first stable state
  • Fig. 8 is a schematic diagram of the guide key of the rotating rod in the connecting part in the second stable state
  • Fig. 9 is an exploded schematic view of the rotation rod guide key changing from the first stable state to the second stable state in the connecting part;
  • Fig. 10 is an exploded schematic view of the rotation rod guide key changing from the second stable state to the first stable state in the connecting portion.
  • the parking actuator of the present invention includes a ratchet 2, a pawl 1, a pushing device and a driving device.
  • the ratchet 2 is connected in the casing (not shown) through the output shaft (not shown), one end of the ratchet 1 is rotatably connected with the casing, and the other end can be engaged with or separated from the ratchet 2 .
  • the pawl 1 is also provided with an elastic reset device (such as a torsion spring, etc.).
  • the elastic reset device In the initial state, the elastic reset device is in a relaxed state, and the ratchet 1 is separated from the ratchet 2; when the external force drives the ratchet 1 to engage with the ratchet 2, the elastic reset device provides elastic force, and the elastic force can drive the ratchet 1 to separate from the ratchet 2 trend.
  • the pushing device includes a cone block 4, and the driving device is connected with the pushing device to drive the cone block 4 to perform linear reciprocating motion.
  • the cone block 4 is located under the ratchet 1, and it is provided with a thick part and a thin part distributed along its axial direction. When the thick part contacts the ratchet 1, the ratchet 1 is pushed into the tooth groove of the ratchet 2 to realize the parking.
  • Car state when the detail is in contact with the pawl 1, the pawl 1 will break away from the tooth groove of the ratchet 2 under the reset action of the elastic reset device, and realize the non-parking state.
  • the pushing device of the present invention also includes a push rod 5, a rotating rod 6 and a connecting part 8, and the cone block 4 is pushed to move linearly by the aforementioned three devices.
  • the push rod 5 includes a push rod body 51 , one end of the push rod body 51 is connected to the driving device, and the other end is provided with a circle of saw teeth 52 , and each saw tooth 52 includes two opposite saw tooth slopes 521 . There is no gap between two adjacent saw teeth 52 .
  • a plurality of push rod guide keys 53 are uniformly arranged on the outer wall of the end portion of the push rod body 51 away from the driving device along the circumferential direction.
  • the rotating rod 6 comprises a rotating rod body 61, a plurality of rotating rod guide keys 62 are evenly arranged on the outer wall of one end of the rotating rod body 61 along the circumferential direction, and one end of the rotating rod guiding keys 62 away from the cone block 4 is provided with
  • the inclined surface 621 of the rotating rod is matched with the inclined surface 521 of the sawtooth.
  • the other end of the rotating rod body 61 is connected with the cone block 4 through the reset device 3 .
  • the reset device 3 is preferably a spring.
  • the position of the connecting part 8 is fixed, and it is a rotating body, which is provided with a through cavity 81, and the push rod 5 and the rotating rod 6 are respectively slidably connected with the cavity 81, and both The ends abut or separate in the cavity 81.
  • the side wall of the cavity 81 is provided with a first chute 83 and a second chute 84 alternately along the circumferential direction, and the push rod guide key 53 and the rotation rod guide key 62 can be connected with the first chute 83 or the second chute 84 Swipe to connect.
  • the guide key 53 can pass through the first chute 83 and the second chute 84 , while the rotation rod guide key 62 can only pass through the second chute 84 and cannot pass through the first chute 83 .
  • a fixed block 82 is provided, and one end of the fixed block 82 near the rotating rod 6 is provided with a fixed block slope 821, and the direction of inclination of the fixed block slope 821 is the same as that of the rotating rod slope 621.
  • the direction of inclination is the same, so that the rotation direction of the rotation rod 6 in the connecting portion 8 can be limited.
  • one end of the first chute 83 close to the turning rod 6 is provided with a chute slope 831, the direction of inclination of the chute slope 831 is the same as that of the rotation rod slope 621, so that the rotation rod guide key 62 can be firmly locked in the sliding direction. between the groove slope 831 and the fixing block 82 .
  • the propulsion device of the present invention provides two stable states that can appear alternately, that is, the first stable state and the second stable state.
  • the first stable state is shown in Figure 7, the rotating rod guide key 62 is located in the second chute 84, and the rotating rod 6 cannot move or rotate around the axial direction without other external force and the limiting effect of the second chute 84 .
  • the second stable state is shown in FIG. 8 , the rotating rod guide key 62 is stuck between the chute slope 831 and the fixed block 82 , and the rotating rod 6 cannot move or rotate around the axial direction.
  • the parking and non-parking states are mainly determined by the thickness position of the cone block 4, the corresponding parking states of the aforementioned two stable states can be exchanged as required, and both the first stable state and the second stable state can be set to parking. or non-parking steady state.
  • the number of the first chute 83, the second chute 84, and the guide key 62 of the rotating rod are the same, and the number of the sawtooth 52 and the guide key 53 of the push rod is equal to the number of the guide key 62 of the rotating rod. twice, so as to ensure that the connecting portion 8 can play a maximum position-limiting and guiding effect on the push rod 5 and the rotation 6 .
  • the push rod guide key 53 is aligned with the center line of the sawtooth 52, and the slopes of the sawtooth inclined plane 521, the rotating rod inclined plane 621 and the fixed block inclined plane 821 are the same.
  • the end of the push rod body 51 away from the driving device is provided with a cavity 54
  • the end of the rotating rod body 61 away from the cone block 4 is provided with an insertion part 63
  • the insertion part 63 is matched with the cavity 54 .
  • the insertion part 63 is still located in the cavity 54, and the cavity 54 can guide the movement of the push rod 5 to ensure that the sawtooth slope 521 is in contact with the rotation rod slope. 621 was successfully contacted and promoted.
  • the working principle of the propelling device of the present invention is as follows:
  • the driving device drives the push rod 5 to move in the direction of the rotating rod 6 , and the sawtooth slope 521 contacts the rotating rod slope 621 .
  • the rotating rod guide key 62 is in the second chute 84, the tangential component force exerted by the sawtooth slope 521 on the rotating rod slope 621 is offset by the supporting force provided by the chute wall, and only the axial force acts on the rotating rod guide key. 62, the reset device 3 is compressed. The rotating rod guide key 62 gradually breaks away from the second chute 84 under the action of the axial force.
  • the driving device drives the push rod 5 to move in the direction of the rotating rod 6 , and the sawtooth slope 521 contacts the rotating rod slope 621 .
  • the rotating rod guide key 62 is still in contact with the fixed block 82, the tangential component force exerted by the sawtooth slope 521 on the rotating rod slope 621 is offset by the supporting force provided by the fixed block 82, and only the axial force acts on the rotating rod guide key. 62, the reset device 3 is compressed.
  • the guide key 62 of the rotating rod is gradually separated from the fixed block 82 under the action of the axial force.
  • the drive device can be a linear drive device such as a hydraulic cylinder or an air cylinder, or a low-cost electromagnetic valve 7 can be used as in the present invention.
  • the electromagnetic valve 7 includes a housing 71 , an electromagnetic coil 72 and a valve core 73 disposed in the housing 71 , and a spring 74 is provided between the valve core 73 and the housing 71 .
  • One end of the connecting portion 8 is fixedly connected to the housing 71 .
  • one end of the push rod 5 is located in the housing 71 , and the other end is located in the connecting portion 8 .
  • the spring 74 is in a relaxed state, and most of the valve core 73 is located outside the electromagnetic coil 72 .
  • the spool 73 In the energized state, due to the magnetic field attraction of the electromagnetic coil 72, the spool 73 enters the interior of the electromagnetic coil 72, and as the volume of the spool 73 enters increases, the electromagnetic force increases. At this time, the spring 74 stretches, and the spool 73 pushes pole 5.
  • the reset device 3 is compressed.
  • the present invention is beneficial in that it uses solenoid valves, push rods, rotating rods and connecting parts to replace existing motors and lead screws, while greatly reducing the cost and complexity of the mechanism, and improving the reliability of the mechanism .
  • This structure realizes smooth switching between parking and non-parking stable states, reduces the difficulty of controlling the mechanism, and improves the instability of the mechanism. At the same time, it has low requirements on the machining accuracy of each component and low requirements on suppliers and processing equipment. , greatly improving the applicability and popularity.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

Mécanisme d'exécution de stationnement. Un dispositif de poussée comprend une tige de poussée (5), une barre tournante (6) et une partie de liaison (8) ; la tige de poussée (5) comprend un corps de tige de poussée (51), une extrémité du corps de tige de poussée (51) est reliée à un dispositif d'entraînement, et l'autre extrémité du corps de tige de poussée est pourvue d'un cercle de dents de scie (52) ; une pluralité de clavettes de guidage de tige de poussée (53) est disposée de manière régulière sur la paroi externe de la partie d'extrémité, à l'opposé du dispositif d'entraînement, du corps de tige de poussée (51) dans la direction circonférentielle ; la barre tournante (6) comprend un corps de tige rotatif (61), une pluralité de clavettes de guidage de barre tournante (62) est disposée de manière régulière sur la paroi externe d'une extrémité du corps de barre tournante (61) dans la direction circonférentielle, et une surface inclinée de barre tournante (621) est disposée à une extrémité de chaque clavette de guidage de barre tournante (62) ; une cavité (81) est formée dans la partie de liaison (8) ; de premières rainures coulissantes (83) et de secondes rainures coulissantes (84) sont formées dans la paroi latérale de la cavité (81) dans un mode décalé dans la direction circonférentielle ; et les diamètres externes des clavettes de guidage de tige de poussée (53) sont plus petits que les diamètres internes des premières rainures coulissantes (83), qui sont plus petits que les diamètres externes des clavettes de guidage de barre tournante (62), qui sont plus petits que les diamètres internes des secondes rainures coulissantes (84). Selon le mécanisme, une électrovanne, la tige de poussée, la barre tournante et la partie de liaison peu couteuses sont utilisées pour remplacer un moteur d'exécution et un arbre fileté, de sorte que les coûts du mécanisme peuvent être considérablement réduits, et la contrôlabilité et la durabilité du mécanisme sont améliorées.
PCT/CN2022/070448 2021-05-25 2022-01-06 Mécanisme d'exécution de stationnement WO2022247297A1 (fr)

Applications Claiming Priority (2)

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CN202110573616.8A CN113183933B (zh) 2021-05-25 2021-05-25 一种驻车执行机构
CN202110573616.8 2021-05-25

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Publication number Priority date Publication date Assignee Title
CN113183933B (zh) * 2021-05-25 2023-02-17 上海纳铁福传动系统有限公司 一种驻车执行机构

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CN202448969U (zh) * 2011-12-29 2012-09-26 浙江吉利汽车研究院有限公司 一种自动驻车装置
CN106545655A (zh) * 2016-11-01 2017-03-29 北京新能源汽车股份有限公司 用于车辆的驻车机构
CN106641242A (zh) * 2015-10-30 2017-05-10 长城汽车股份有限公司 一种液压驻车推杆总成、自动变速器和汽车
DE102016201177A1 (de) * 2016-01-27 2017-07-27 Schaeffler Technologies AG & Co. KG Parksperrenvorrichtung für ein Fahrzeuggetriebe
CN110529591A (zh) * 2019-06-28 2019-12-03 苏州东风精冲工程有限公司 一种汽车变速箱及减速机p档液压驻车执行器的锁止机构
CN113183933A (zh) * 2021-05-25 2021-07-30 上海纳铁福传动系统有限公司 一种驻车执行机构

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CN104776220B (zh) * 2015-02-12 2017-04-05 长城汽车股份有限公司 自动变速器的驻车机构及自动变速器
JP7059907B2 (ja) * 2018-11-28 2022-04-26 トヨタ自動車株式会社 パーキングロック装置
DE102019205602B4 (de) * 2019-04-17 2020-11-05 Zf Friedrichshafen Ag Parksperrenrad und Parksperrenanordnung
CN209860247U (zh) * 2019-06-28 2019-12-27 武汉工程大学 一种按压式插头
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202448969U (zh) * 2011-12-29 2012-09-26 浙江吉利汽车研究院有限公司 一种自动驻车装置
CN106641242A (zh) * 2015-10-30 2017-05-10 长城汽车股份有限公司 一种液压驻车推杆总成、自动变速器和汽车
DE102016201177A1 (de) * 2016-01-27 2017-07-27 Schaeffler Technologies AG & Co. KG Parksperrenvorrichtung für ein Fahrzeuggetriebe
CN106545655A (zh) * 2016-11-01 2017-03-29 北京新能源汽车股份有限公司 用于车辆的驻车机构
CN110529591A (zh) * 2019-06-28 2019-12-03 苏州东风精冲工程有限公司 一种汽车变速箱及减速机p档液压驻车执行器的锁止机构
CN113183933A (zh) * 2021-05-25 2021-07-30 上海纳铁福传动系统有限公司 一种驻车执行机构

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