Parking system with manual unlocking function

Abstract

The utility model belongs to the technical field of parking systems, and particularly discloses a parking system with a manual unlocking function, which comprises a manual unlocking assembly and a push rod parking unit, the push rod parking unit comprises a gear assembly, a push rod assembly and a parking assembly, the push rod assembly is used for connecting the parking assembly with the gear assembly, and the parking assembly is used for connecting the parking assembly with the gear assembly. The gear assembly drives the parking assembly to be separated from the transmission system through the push rod assembly. The gear assembly comprises a parking device, a gear plate and a first rotating shaft, and the two sides of the first rotating shaft are connected with the parking device and the gear plate correspondingly. The manual unlocking assembly is used for driving the gear plate to rotate and comprises a threaded part, a threaded hole matched with the threaded part is formed in the speed reducer shell or the gearbox shell, the threaded part is in threaded connection in the threaded hole, and the end, stretching into the speed reducer shell, of the threaded part can push the gear plate to rotate. And the parking mechanism is out of gear by adopting thread feeding, so that the torque required for releasing the gear is reduced, and the operation on the whole vehicle is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of parking systems, and in particular relates to a parking system with a manual unlocking function. Background Art

[0002] Cars are currently primarily categorized as new energy vehicles and traditional fuel vehicles. While these two share some similarities, such as steering and sunroofs, they also differ significantly. For example, new energy vehicles are powered by electricity, which drives the motor, transmitting motion to the reducer, which in turn drives the axles and wheels, propelling the vehicle forward. Traditional fuel vehicles, on the other hand, rely on the engine to drive the transmission, which in turn drives the axles and wheels. Looking at the transmission chains of both, we can see that a transmission mechanism exists between the power source and the axles and wheels. While the structures differ significantly, their functions are similar.

[0003] There is a special system in both the gearbox and the reducer: the parking system. This system is independent of the transmission system, but it is also indispensable. As the name suggests, the parking system refers to a system that works when the vehicle is parked (parked for a long time). This system can completely lock the vehicle on the ground, and the transmission system cannot continue to rotate, preventing the vehicle from sliding down the slope, and even playing an anti-theft role. However, the current parking system may also have certain problems. For example, if the vehicle has an abnormality, the vehicle cannot be towed. In order to solve this problem, it is necessary to develop a manual unlocking function for the gearbox and reducer. After the manual unlocking function is applied, the vehicle can be released from the P gear and shifted into the N gear through external operation when it is unable to continue working, facilitating road rescue, etc. Utility Model Content

[0004] The purpose of the utility model is to provide a parking system with a manual unlocking function. Manual unlocking can enable the vehicle to be released from P gear and engaged into N gear through external operation when the vehicle is unable to continue working, thereby facilitating road rescue, etc.

[0005] In order to achieve the above object, the technical scheme of the utility model is: a parking system with manual unlocking function, including manual unlocking assembly and push rod parking unit, the push rod parking unit includes gear assembly, push rod assembly and parking assembly, the push rod assembly is used for connecting parking assembly and gear assembly, gear assembly drives parking assembly and transmission system to separate through push rod assembly;Gear assembly includes parking device, gear plate and first pivot, both sides of first pivot are connected with parking device and gear plate respectively, parking device drives gear plate to rotate through first pivot;The manual unlocking assembly is used for driving gear plate to rotate, the manual unlocking assembly includes screw part, the reducer housing or gearbox housing is equipped with the threaded hole matched with screw part, screw part is connected in threaded hole, one end of screw part that stretches into reducer housing can push gear plate to rotate, the other end of screw part that stretches out reducer housing or gearbox housing.

[0006] Further, the screw part is a double-end screw rod;One side of the double-end screw rod is screwed with the threaded hole, and the other side is screwed with a nut, the nut is located outside the reducer housing or the gearbox housing and can cover the opening hole on the reducer housing or the gearbox housing.

[0007] Further, a first limiting plate is arranged between the threads on both sides of the double-end screw rod, when the first limiting plate abuts against the threaded hole, the screw part pushes the gear plate to realize gear shifting.

[0008] Further, the push rod assembly includes a push-pull rod, a pressing piece and an elastic piece, the pressing piece includes an integrally formed first cylindrical segment, a transition segment and a second cylindrical segment, the diameter of the first cylindrical segment is greater than the diameter of the second cylindrical segment, the large-diameter end of the transition segment is connected with the first cylindrical segment, and the small-diameter end of the transition segment is connected with the second cylindrical segment;When the first cylindrical segment is located above the parking assembly, the parking assembly is in a parking state, and when the first cylindrical segment is located above the parking assembly, the parking assembly is in an unlocked state;The reducer housing or the gearbox housing is provided with a mounting hole, the pressing piece is located in the mounting hole, and the pressing piece can be deflected and moved in the mounting hole;The inside of the pressing piece is provided with a sliding hole, one side of the sliding hole close to the gear plate is provided with an enlarged hole;One side of the push-pull rod is connected with the gear plate, and the other side passes through the enlarged hole and the sliding hole and is slidingly connected with the sliding hole;The side of the push-pull rod away from the gear plate is connected with a second limiting plate, and the second limiting plate is located outside the sliding hole and cannot pass through the sliding hole;The side of the push-pull rod close to the gear plate is provided with a fixed plate, and the elastic piece is installed between the fixed plate and the enlarged hole.

[0009] Further, the parking assembly comprises a pawl, a reset member and a second rotating shaft, the second rotating shaft is connected with the reducer housing or the gearbox housing, the pawl is installed on the second rotating shaft and can rotate, the pawl can be clamped into the gear slot of the transmission system to park; the reset member is installed on the second rotating shaft, and the reset member is used for resetting the pawl.

[0010] Further, the reset member adopts a torsional spring, the torsional spring is sleeved on the second rotating shaft, one end of the torsional spring is installed below the pawl, and the other side of the torsional spring is installed on the reducer housing or the gearbox housing.

[0011] Further, a first sealing ring is arranged between the nut and the first limiting plate, and a second sealing ring is arranged between the nut and the reducer housing or the gearbox housing.

[0012] The working principle of the technical solution is that:

[0013] When normal parking is performed, the brake drives the first rotating shaft and the gear plate to rotate, the gear plate drives the pressing member to move through the push-pull rod and the elastic member, the pressing member moves to press the pawl, the pawl is pressed into the gear slot of the transmission system to park; when the pawl is opposite to the tooth top of the transmission system, neither the pawl nor the pressing member can move, at this time, the elastic member is compressed between the fixed plate and the counterbore, at this time, the transmission system is still rotating, when the gear slot of the transmission system is opposite to the pawl, the elastic force of the elastic member drives the pressing member to move, the pressing member moves to press the pawl, and the pawl is pressed into the gear slot of the transmission system to park.

[0014] When the whole vehicle appears an abnormal condition, the brake cannot be used for unlocking. The threaded part can be rotated, the threaded part moves axially in the process of rotation, the gear plate is driven to rotate by the threaded part, and when the first limiting plate is opposite to the threaded hole, the gear plate is successfully shifted from the P gear to the N gear.

[0015] The technical solution has the following beneficial effects:

[0016] ①The technical solution adopts the threaded feed to shift the parking mechanism, so that the torque required for releasing the gear is reduced, and the operation on the whole vehicle is facilitated.

[0017] ②The manual unlocking assembly does not need to disassemble parts in the working process, and can be completed only by tightening.

[0018] ③The first sealing ring and the second sealing ring are arranged, and the sealing effect is achieved, so that the sealing requirements of the gearbox or the reducer can be met. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view when parking of the parking system with the manual unlocking function.

[0020] Figure 2 is a rear view of Figure 1 ;

[0021] Figure 3 is a structure schematic view of the manual unlocking of the parking system with the manual unlocking function;

[0022] Figure 4 is a rear view of Figure 3 ;

[0023] Figure 5 is a structure schematic view of the manual unlocking assembly in the parking system with the manual unlocking function;

[0024] Figure 6 is a structure schematic view of the push rod assembly in the parking system with the manual unlocking function. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the present application will be further described in detail below with specific embodiments:

[0026] The reference signs in the drawings of the specification include: the manual unlocking assembly 1, the transmission system 2, the pawl 3, the gear plate 4, the push-pull rod 5, the elastic member 6, the fixed plate 7, the second cylindrical section 8, the first cylindrical section 9, the transition section 10, the reset member 11, the threaded member 12, the nut 13, the first limiting plate 14, the first sealing ring 15, the second sealing ring 16, the counterbore 17.

[0027] The technical scheme in the embodiments of the present application will be further described in detail below with specific embodiments:

[0028] The embodiments are basically as shown in the accompanying drawings: Figures 1-6 A parking system with a manual unlocking function, comprising a manual unlocking assembly 1 and a push rod parking unit, the push rod parking unit comprising a gear assembly, a push rod assembly and a parking assembly, the push rod assembly being used for connecting the parking assembly and the gear assembly, the gear assembly being separated from the transmission system 2 by driving the parking assembly through the push rod assembly; the gear assembly comprising a parking device, a gear plate 4 and a first rotating shaft, the two sides of the first rotating shaft being connected with the parking device and the gear plate 4 respectively, the parking device driving the gear plate 4 to rotate through the first rotating shaft.

[0029] As Figure 6As shown, the push rod assembly includes a push-pull rod 5, a pressing piece, and an elastic piece 6 (specifically a spring). The pressing piece includes a first cylindrical section 9, a transition section 10, and a second cylindrical section 8, which are integrally formed. The diameter of the first cylindrical section 9 is greater than that of the second cylindrical section 8. The large-diameter end of the transition section 10 is connected to the first cylindrical section 9, and the small-diameter end of the transition section 10 is connected to the second cylindrical section 8. When the first cylindrical section 9 is located above the parking assembly, the parking assembly is in the parking state. When the first cylindrical section 9 is located above the parking assembly, the parking assembly is in the unlocked state. The reducer housing or the transmission housing is provided with a mounting hole, and the pressing piece is located in the mounting hole. The pressing piece can be deflected and moved in the mounting hole. The inside of the pressing piece is provided with a sliding hole, and the side of the sliding hole close to the gear plate 4 is provided with an enlarged hole 17. One side of the push-pull rod 5 is connected to the gear plate 4, and the other side passes through the enlarged hole 17 and the sliding hole and is in sliding connection with the sliding hole. The side of the push-pull rod 5 away from the gear plate 4 is connected with a second limiting plate, and the second limiting plate is located outside the sliding hole and cannot pass through the sliding hole. The side of the push-pull rod 5 close to the gear plate 4 is provided with a fixed plate 7, and the elastic piece 6 is installed between the fixed plate 7 and the enlarged hole 17.

[0030] The parking assembly includes a pawl 3, a reset piece 11, and a second rotating shaft. The second rotating shaft is connected to the reducer housing or the transmission housing. The pawl 3 is installed on the second rotating shaft and can rotate. The pawl 3 can be clamped into the tooth groove of the transmission system 2 to park. The reset piece 11 is installed on the second rotating shaft, and the reset piece 11 is used to reset the pawl. The reset piece 11 is a torsional spring. The torsional spring is sleeved on the second rotating shaft. One end of the torsional spring is installed below the pawl 3, and the other end of the torsional spring is installed on the reducer housing or the transmission housing.

[0031] The manual unlocking assembly 1 is used to drive the gear plate 4 to rotate, as shown in the figure. Figure 5 As shown, the manual unlocking assembly 1 includes a threaded piece 12. The reducer housing or the transmission housing is provided with a threaded hole matched with the threaded piece 12. The threaded piece 12 is screw-connected in the threaded hole. The end of the threaded piece 12 extending into the reducer housing can push the gear plate 4 to rotate. The other end of the threaded piece 12 extends out of the reducer housing or the transmission housing. The threaded piece 12 is a double-headed screw rod. One side of the double-headed screw rod is screw-connected with the threaded hole, and the other side is screw-connected with a nut 13. The nut 13 is installed outside the reducer housing or the transmission housing and can cover the opening on the reducer housing or the transmission housing. The first limiting plate 14 is arranged between the threads on both sides of the double-headed screw rod. When the first limiting plate 14 abuts against the threaded hole, the threaded piece 12 pushes the gear plate 4 to realize gear shifting. The first sealing ring 15 is arranged between the nut 13 and the first limiting plate 14. The second sealing ring 16 is arranged between the nut 13 and the reducer housing or the transmission housing. The inner hexagonal hole is arranged on the outer end of the threaded piece 12. The hexagonal head wrench can drive the threaded piece 12 to rotate through the inner hexagonal hole.

[0032] The specific implementation process is as follows:

[0033] When the vehicle is normally parked, the brake drives the first rotating shaft and the gear plate 4 to rotate, the gear plate 4 drives the pressing piece to move through the push-pull rod 5 and the elastic member 6, the movement of the pressing piece makes the first cylindrical section 9 press the pawl 3, the pawl 3 is pressed into the tooth groove of the transmission system 2 to park. When the pawl 3 is opposite to the tooth top of the transmission system 2, neither the pawl 3 nor the pressing piece can move, at this time the elastic member 6 is compressed in the fixed plate 7 and the expanded hole 17, at this time the transmission system 2 is still rotating, when the tooth groove of the transmission system 2 is opposite to the pawl 3, the elastic force of the elastic member 6 drives the pressing piece to move, the movement of the pressing piece makes the first cylindrical section 9 press the pawl 3, the pawl 3 is pressed into the tooth groove of the transmission system 2 to park.

[0034] When the vehicle is abnormal, the brake cannot be used to unlock. The threaded member 12 can be rotated, the threaded member 12 moves axially in the process of rotating, the threaded member 12 drives the gear plate 4 to rotate, the gear plate 4 drives the pressing piece to move through the push-pull rod 5, the elastic member 6 and the second limiting plate, the first cylindrical section 9 of the pressing piece is separated from the pawl 3, the pawl 3 is popped up under the action of the reset member 11. When the first limiting plate 14 is opposite to the threaded hole, the gear plate 4 successfully shifts gears, the pawl 3 is separated from the transmission system 2, and shifts from the P gear to the N gear.

[0035] It should be noted that the relational terms herein such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] The above-mentioned is only the embodiment of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described in detail, the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled person in the art can improve and implement the present scheme under the inspiration given in the present application, and some typical known structures or known methods should not become an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that for the skilled person in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A parking system having a manual unlocking function, characterized by: The application relates to a manual unlocking assembly (1) and a push rod parking unit, the push rod parking unit comprising a gear assembly, a push rod assembly and a parking assembly, the push rod assembly being used for connecting the parking assembly and the gear assembly, the gear assembly being separated from a transmission system (2) by the push rod assembly; the gear assembly comprising a parking device, a gear plate (4) and a first rotating shaft, two sides of the first rotating shaft being connected with the parking device and the gear plate (4) respectively, the parking device driving the gear plate (4) to rotate through the first rotating shaft; the manual unlocking assembly (1) being used for driving the gear plate (4) to rotate, the manual unlocking assembly (1) comprising a threaded part (12), a screw hole matched with the threaded part (12) being arranged on a reducer housing or a gearbox housing, the threaded part (12) being threadedly connected in the screw hole, one end of the threaded part (12) extending into the reducer housing and being capable of driving the gear plate (4) to rotate, the other end of the threaded part (12) extending out of the reducer housing or the gearbox housing.

2. The parking system having a manual unlocking function according to claim 1, characterized in that: The threaded part (12) is a double-head screw rod; one side of the double-head screw rod is threadedly connected with the screw hole, and the other side is threadedly connected with a nut (13), the nut (13) being located outside the reducer housing or the gearbox housing and being capable of covering an opening on the reducer housing or the gearbox housing.

3. The parking system having a manual unlocking function according to claim 2, characterized in that: First limiting plates (14) are arranged between the threads on the two sides of the double-head screw rod, when the first limiting plates (14) abut against the screw hole, the threaded part (12) drives the gear plate (4) to realize gear shifting.

4. The parking system having a manual unlocking function according to claim 1, characterized in that: The push rod assembly comprises a push-pull rod (5), a pressing part and an elastic part (6), the pressing part comprising an integrally-formed first cylindrical section (9), a transition section (10) and a second cylindrical section (8), the diameter of the first cylindrical section (9) being larger than that of the second cylindrical section (8), the large-diameter end of the transition section (10) being connected with the first cylindrical section (9), and the small-diameter end of the transition section (10) being connected with the second cylindrical section (8); when the first cylindrical section (9) is located above the parking assembly, the parking assembly is in a parking state, and when the first cylindrical section (9) is located above the parking assembly, the parking assembly is in an unlocking state; an installation hole is arranged in the reducer housing or the gearbox housing, the pressing part is located in the installation hole, and the pressing part can be deflected and moved in the installation hole; a sliding hole is arranged in the pressing part, an enlarged hole (17) being arranged on one side of the sliding hole close to the gear plate (4); one side of the push-pull rod (5) is connected with the gear plate (4), and the other side of the push-pull rod (5) passes through the enlarged hole (17) and the sliding hole and is slidably connected with the sliding hole; a second limiting plate is connected with the side of the push-pull rod (5) away from the gear plate (4), the second limiting plate is located outside the sliding hole and cannot pass through the sliding hole; a fixed plate (7) is arranged on the side of the push-pull rod (5) close to the gear plate (4), and the elastic part (6) is arranged between the fixed plate (7) and the enlarged hole (17).

5. The parking system having a manual unlocking function according to claim 1, characterized in that: The parking assembly comprises a pawl (3), a reset member (11) and a second rotating shaft connected with a reducer housing or a gearbox housing, the pawl (3) is installed on the second rotating shaft and can rotate, the pawl (3) can be clamped into a tooth groove of a transmission system (2) to park; the reset member (11) is installed on the second rotating shaft, and the reset member (11) is used for resetting the pawl (3).

6. A parking system having a manual unlocking function according to claim 5, characterized in that: The reset member (11) adopts a torsion spring, the torsion spring is sleeved on the second rotating shaft, one end of the torsion spring is installed below the pawl (3), and the other side of the torsion spring is installed on the reducer housing or the gearbox housing.

7. The parking system having a manual unlocking function according to claim 2, characterized in that: A first sealing ring (15) is arranged between the nut (13) and a first limiting plate (14), and a second sealing ring (16) is arranged between the nut (13) and the reducer housing or the gearbox housing.

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