A parking structure for new energy vehicles

Abstract

The present invention relates to a parking structure for a new energy vehicle, comprising a mandrel, an elastic driving block is installed on the mandrel, one side of the elastic driving block is connected to a parking locking mechanism, a pawl is arranged on one side of the elastic driving block, a reset device is installed on the pawl, a ratchet is arranged below the pawl, a tooth groove is opened on the ratchet, and the elastic driving block comprises an active plate and a driven plate, the active plate is fixedly connected to the mandrel, the driven plate is rotatably installed on the mandrel, and a first spring is arranged between the driven plate and the active plate. The present invention has a simple structure, and the rotating shaft structure can reduce contact friction, improve transmission accuracy and life; the parking mechanism can realize self-locking in the parking or non-parking state, without the need for an external limit device; the pawl has a reliable rotation range; the parking mechanism can realize manual or electronic parking, and the parking mode can be changed according to actual needs.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile equipment and relates to a parking structure for a new energy automobile. Background Art

[0002] The existing parking mechanism has a complex structure and installation, occupies a large space, and greatly increases the volume of the box; there is sliding friction between the pawl and the force-applying device of the existing parking mechanism, which affects the service life of the mechanism. Summary of the invention

[0003] The purpose of the present invention is to provide a parking structure for a new energy vehicle, wherein the rotating shaft structure can reduce contact friction, improve transmission accuracy and life; and the parking mechanism can achieve self-locking in a parking or non-parking state.

[0004] According to the technical solution provided by the present invention: a parking structure for a new energy vehicle includes a core shaft, an elastic driving block is installed on the core shaft, one side of the elastic driving block is connected to a parking locking mechanism, a pawl is arranged on one side of the elastic driving block, a reset device is installed on the pawl, a ratchet is arranged under the pawl, and a tooth groove is opened on the ratchet.

[0005] As a further improvement of the present invention, the elastic driving block includes an active plate and a driven plate, the active plate is fixedly connected to the core shaft, the driven plate is rotatably mounted on the core shaft, and a first spring is arranged between the driven plate and the active plate.

[0006] As a further improvement of the present invention, a second motor mounting hole is opened in the driven plate, the upper part of the driven plate is a driven plate limiting surface, a second spring stop is provided on one side of the lower part of the driven plate, a second spring boss is provided on the second spring stop, the first spring is sleeved in the second spring boss, and the upper side of the driven plate is a pawl contact portion; a first motor mounting hole is opened in the middle part of the active plate, an active plate stop is provided on one side of the upper part of the active plate, a first spring stop is provided on one side of the lower part of the active plate, a first spring stop is provided on the first spring stop, and the first spring boss is sleeved in the first spring boss.

[0007] As a further improvement of the present invention, a pawl pin shaft hole is opened in the pawl, the lower part of one end of the pawl is a pawl tooth, and a roller is rotatably arranged on the upper part of the pawl.

[0008] As a further improvement of the present invention, the reset device is a torsion spring, one end of which is fixed in the gearbox, and the other end of which is fixedly connected to the pawl.

[0009] As a further improvement of the present invention, the parking lock mechanism includes a rotating sleeve, one end of a connecting rod is slidably installed in the rotating sleeve, the other end of the connecting rod is hinged to the installation elastic driving block, and a second spring is arranged between the rotating sleeve and the connecting rod.

[0010] As a further improvement of the present invention, a connecting rod hole is radially opened on the rotating sleeve, and a second spring guide groove is opened on one side of the connecting rod hole.

[0011] As a further improvement of the present invention, a retaining ring is installed in the connecting rod, one end of the connecting rod is slidably arranged in the connecting rod hole, and the second spring is arranged between the retaining ring and the second spring guide groove.

[0012] As a further improvement of the present invention, a limit block is provided on one side of the elastic driving block.

[0013] As a further improvement of the present invention, the first motor mounting hole is in a half-notched shape, and the core shaft is adapted to the shape of the first motor mounting hole.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention has a simple structure, and the rotating shaft structure can reduce contact friction, improve transmission accuracy and service life; the parking mechanism can realize self-locking in the parking or non-parking state, and no external limit device is required; the pawl rotation range is reliable; the parking mechanism can realize manual or electronic parking, and the parking mode can be changed according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the active board of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the driven plate of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the ratchet of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the rotating sleeve of the present invention.

[0021] Figure 6 It is a schematic structural diagram of the present invention without engaging the parking gear.

[0022] Figure 7 It is a structural schematic diagram of the present invention when the parking gear is engaged.

[0023] Figure 8 It is a schematic diagram of the structure of the pawl of the present invention supporting the top of the ratchet tooth. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1-8 It includes a ratchet 1, a pawl 2, a pawl pin shaft hole 2-1, a pawl tooth 2-2, a roller 2-3, a driven plate 3, a second motor mounting hole 3-1, a driven plate limiting surface 3-2, a second spring stop 3-3, a second spring boss 3-4, a pawl contact portion 3-5, an active plate 4, a first motor mounting hole 4-1, an active plate stop 4-2, a first spring stop 4-3, a first spring boss 4-4, a core shaft 5, a connecting block 6, a connecting rod 7, a retaining ring 7-1, a pin shaft 8, a rotating sleeve 9, a connecting rod hole 9-1, a second spring guide groove 9-2, a torsion spring 10, a first spring 11, a limiting block 12, a second spring 13, etc.

[0026] like Figure 1 As shown, the present invention is a parking structure for a new energy vehicle, comprising a core shaft 5, the core shaft 5 is located in the vehicle gearbox, an elastic driving block is installed on the core shaft 5, one side of the elastic driving block is connected to the parking locking mechanism, a pawl 2 is arranged on one side of the elastic driving block, a reset device is installed on the pawl 2, a ratchet 1 is arranged below the pawl 2, and a tooth groove is opened on the ratchet 1.

[0027] In this embodiment, the elastic driving block includes an active plate 4 and a driven plate 3 . The active plate 4 is fixedly connected to the core shaft 5 . The driven plate 3 is rotatably mounted on the core shaft 5 . A first spring 11 is arranged between the driven plate 3 and the active plate 4 .

[0028] like Figure 2 Described, the middle part of active plate 4 is provided with first motor mounting hole 4-1, the upper side of active plate 4 is provided with active plate stop 4-2, is used for limiting the counterclockwise rotation of driven plate 3, the lower side of active plate 4 is provided with first spring stop 4-3, the first spring stop 4-3 is provided with first spring boss 4-4, the first spring boss 4-4 is sleeved with one end of first spring 11.

[0029] like Figure 3 As described, a second motor mounting hole 3-1 is opened in the driven plate 3, the upper part of the driven plate is a driven plate limiting surface 3-2, the driven plate limiting surface 3-2 is close to the bottom of the active plate stop 4-2, a second spring stop 3-3 is provided on one side of the lower part of the driven plate 3, a second spring boss 3-4 is provided on the second spring stop 3-3, and the other end of the first spring 11 is sleeved in the second spring boss 3-4. A ratchet contact portion 3-5 is provided on one side of the upper part of the driven plate, and the ratchet contact portion 3-5 is arc-shaped.

[0030] like Figure 4 The pawl 2 has a pawl pin hole 2-1, a pin is installed in the pawl pin hole 2-1, so that the pawl 2 is rotatably installed in the gearbox, the lower part of one end of the pawl 2 is a pawl tooth 2-2, and the upper part of the pawl 2 is rotatably provided with a roller 2-3. The pawl contact part 3-5 is close to the roller 2-3.

[0031] In this embodiment, the reset device is a torsion spring 10. One end of the torsion spring 10 is fixed in the gearbox, and the other end is fixedly connected to the pawl 2.

[0032] The parking lock mechanism comprises a rotating sleeve 9 , in which one end of a connecting rod 7 is slidably mounted, and the other end of the connecting rod 7 is hinged to the active plate 4 , and a second spring 13 is arranged between the rotating sleeve 9 and the connecting rod 7 .

[0033] like Figure 5 As shown, the rotating sleeve 9 is rotatably installed in the gearbox. The rotating sleeve 9 is radially provided with a connecting rod hole 9-1. A second spring guide groove 9-2 is provided on one side of the connecting rod hole 9-1, which is more conducive to the fixing of the second spring 13.

[0034] A retaining ring 7-1 is installed in the connecting rod 7, and the retaining ring 7-1 is perpendicular to the axial direction of the connecting rod 7. One end of the connecting rod 7 is slidably set in the connecting rod hole 9-1. A second spring 13 is set between the retaining ring 7-1 and the second spring guide groove 9-2, and the second spring 13 is sleeved on the connecting rod 7.

[0035] A limit block 12 is provided on one side of the active plate 4 to limit the counterclockwise rotation range of the active plate 4 .

[0036] The first motor mounting hole 4 - 1 is in a half-notched shape, and the core shaft 5 is adapted to the shape of the first motor mounting hole 4 - 1 to achieve radial fixation.

[0037] The first spring 11 is a compression spring.

[0038] The working process of the present invention is as follows:

[0039] like Figure 6 As shown, when parking begins, the motor drives the mandrel 5 to rotate clockwise, and the mandrel 5 drives the active plate 4 to rotate clockwise. The active plate 4 pushes the driven plate 3 to rotate clockwise through the first spring 11, and the pawl contact part 3-5 pushes the roller 2-3, and the roller 2-3 drives the pawl 2 to rotate. The torsion spring 10 generates a preload force as the pawl 2 rotates, and the pawl teeth 2-2 are stuck in the tooth groove of the ratchet 1, and the mandrel 5 loses its power. At the same time, the connecting rod 7 rotates around the rotating sleeve 9 and slides to the side around the rotating sleeve 9. The second spring 13 is compressed by the pressure of the retaining ring 7-1 to generate a preload force. When the car is on a slope, the ratchet 1 tends to rotate due to the weight of the car and generates a tangential force. The ratchet 1 has a normal component force on the pawl 2. At this time, the connecting rod 7 relies on the preload force of the second spring 13 to support the active plate 4, preventing the pawl 2 from sliding out of the tooth groove of the ratchet 1, thereby ensuring the reliability of parking.

[0040] like Figure 7As shown, when the gear starts to be disengaged, the motor drives the core shaft 5 to rotate counterclockwise, and the core shaft 5 drives the active plate 4 to rotate counterclockwise. The bottom of the active plate stop 4-2 pushes the driven plate limit surface 3-2, and the driven plate 3 rotates counterclockwise. At the same time, the torsion spring 10 lifts the pawl 2 until the active plate 4 is limited by the limit block 12 and stops. The torsion spring 10 makes the active plate 4 always close to the limit block 12, and also ensures that the pawl 2 rotates within a certain range.

[0041] like Figure 8 As shown, when parking, when the pawl 2 is initially locked with the top of the ratchet 1 tooth, the vehicle's own gravity will drive the ratchet 1 to rotate until the tooth groove is located below the pawl tooth 2-2, and then the parking gear can be engaged. At this time, there is a maximum sliding travel, which must be within a safe range.

Claims

1. A parking structure for a new energy vehicle, characterized in that: The structure comprises a core shaft (5), an elastic drive block is mounted on the core shaft (5), one side of the elastic drive block is connected to a parking lock mechanism, a pawl (2) is arranged on one side of the elastic drive block, a reset device is mounted on the pawl (2), a ratchet (1) is arranged below the pawl (2), and a tooth groove is formed on the ratchet (1); The elastic drive block comprises an active plate (4) and a driven plate (3), the active plate (4) being fixedly connected to the core shaft (5), the driven plate (3) being rotatably mounted on the core shaft (5), and a first spring (11) being arranged between the driven plate (3) and the active plate (4); The driven plate (3) is provided with a second motor mounting hole (3-1), the upper part of the driven plate is a driven plate limiting surface (3-2), a second spring stopper (3-3) is provided on one side of the lower part of the driven plate (3), a second spring boss (3-4) is provided on the second spring stopper (3-3), the first spring (11) is sleeved in the second spring boss (3-4), and the upper side of the driven plate is a pawl contact portion (3-5); the middle part of the active plate (4) is provided with a first motor mounting hole (4-1), the upper part of the active plate (4) is provided with an active plate stopper (4-2), the lower part of the active plate (4) is provided with a first spring stopper (4-3), the first spring boss (4-4) is provided on the first spring stopper (4-3), and the first spring boss (4-4) is sleeved in the first spring boss (4-4); A ratchet pin hole (2-1) is provided in the ratchet (2), a ratchet tooth (2-2) is provided at the lower portion of one end of the ratchet (2), and a roller (2-3) is rotatably provided at the upper portion of the ratchet (2); The reset device is a torsion spring (10), one end of the torsion spring (10) is fixed in the gearbox, and the other end is fixedly connected to the ratchet pawl (2); The parking lock mechanism comprises a rotating sleeve (9), one end of a connecting rod (7) is slidably mounted in the rotating sleeve (9), the other end of the connecting rod (7) is hingedly connected to the mounting elastic drive block, and a second spring (13) is arranged between the rotating sleeve (9) and the connecting rod (7); The rotating sleeve (9) is radially provided with a connecting rod hole (9-1), and one side of the connecting rod hole (9-1) is provided with a second spring guide groove (9-2); A retaining ring (7-1) is installed in the connecting rod (7), one end of the connecting rod (7) is slidably disposed in the connecting rod hole (9-1), and the second spring (13) is disposed between the retaining ring (7-1) and the second spring guide groove (9-2); A limit block (12) is provided on one side of the elastic driving block.

2. The parking structure for a new energy vehicle according to claim 1, characterized in that: The first motor mounting hole (4-1) is in a half-cut shape, and the core shaft (5) is adapted to the shape of the first motor mounting hole (4-1).

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