CN209833598U - Parking brake system and vehicle - Google Patents
Parking brake system and vehicle Download PDFInfo
- Publication number
- CN209833598U CN209833598U CN201920385803.1U CN201920385803U CN209833598U CN 209833598 U CN209833598 U CN 209833598U CN 201920385803 U CN201920385803 U CN 201920385803U CN 209833598 U CN209833598 U CN 209833598U
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- friction plate
- parking brake
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- sliding sleeve
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Abstract
The utility model discloses a parking braking system and vehicle. In the parking brake system: the shell is used for being mounted or integrated on a machine shell of a driving motor or a speed reducer, and a circular through hole for mounting an eccentric shaft is formed outside the shell; the power output shaft is a power output shaft of a driving motor or a speed reducer; the friction plate and the sliding sleeve are sequentially sleeved on the power output shaft, coaxial with the power output shaft and fixed in the circumferential direction; when the eccentric shaft rotates towards the preset direction by taking the central axis of the circular through hole as the center, the eccentric shaft pushes the friction plate to press the shell or the machine shell through the sliding sleeve; when the eccentric shaft rotates reversely by taking the central axis of the circular through hole as a center, the eccentric shaft drives the friction plate to be far away from the machine shell through the sliding sleeve. The parking braking system is simple in structure, small in occupied space, light in weight and low in cost, and can be suitable for vehicles provided with hydraulic disc type braking systems without influencing the arrangement and the use of the hydraulic disc type braking systems.
Description
Technical Field
The utility model relates to a vehicle manufacturing technical field, in particular to parking braking system and a vehicle that is provided with this parking braking system.
Background
Braking: stopping or reducing the speed of a locomotive, a vehicle, other transportation means, a machine, or the like in operation.
Hydraulic disc brake system: the hydraulic cylinder drives the friction block to press the brake disc, and the friction force between the friction block and the brake disc is used for decelerating and stopping the running automobile.
A parking brake system: the brake device has the function of providing resistance to the automobile when the automobile is parked, so that the automobile cannot slide.
Parking brake handle: a handle for the driver to operate to apply and release the parking brake.
The hydraulic disc type brake system has the advantages of small volume, light weight, low cost, short lag time, quick heat dissipation, good stability of braking efficiency and the like, and is widely applied to passenger vehicles and small buses. However, this brake system has a disadvantage in that it is difficult to provide a parking brake system.
Therefore, how to make a vehicle provided with a hydraulic disc brake system perform parking brake without affecting the arrangement and use of the hydraulic disc brake system is a technical problem to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a parking braking system can be applicable to the vehicle that is provided with hydraulic disc braking system, and does not influence hydraulic disc braking system's arranging and use, the utility model also provides a vehicle that is provided with this parking braking system.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a parking braking system, includes casing, power output shaft, eccentric shaft, friction disc, sliding sleeve, wherein:
the shell is used for being mounted or integrated on a machine shell of the driving motor or the speed reducer, and a circular through hole for mounting the eccentric shaft is formed outside the shell;
the power output shaft is the power output shaft of the driving motor or the speed reducer;
the friction plate is positioned on the outer side of the machine shell, sleeved on the power output shaft and fixed with the power output shaft in the circumferential direction;
the sliding sleeve is positioned on the outer side of the friction plate, is sleeved on the power output shaft and is circumferentially fixed with the power output shaft, and the power output shaft, the friction plate and the sliding sleeve are coaxially arranged;
when the eccentric shaft rotates towards a preset direction by taking the central axis of the circular through hole as a center, the eccentric shaft pushes the friction plate to press the shell or the machine shell through the sliding sleeve;
when the eccentric shaft rotates reversely by taking the central axis of the circular through hole as a center, the eccentric shaft drives the friction plate to be far away from the machine shell through the sliding sleeve.
Preferably, in the parking brake system, a first annular groove is arranged on the periphery side of the sliding sleeve, and the first annular groove and the power output shaft are coaxial;
the eccentric shaft comprises a first shaft section, a second shaft section and a third shaft section, the first shaft section is inserted into the first annular groove, the second shaft section is positioned in the circular through hole, the third shaft section is positioned outside the circular through hole and is used for being connected with an operating mechanism, and an eccentric distance larger than zero exists between the first shaft section and the second shaft section;
when the operating mechanism drives the eccentric shaft to rotate towards the preset direction by taking the central axis of the circular through hole as a center, the first shaft section pushes the friction plate to press the shell or the machine shell through the sliding sleeve;
when the operating mechanism drives the eccentric shaft to rotate reversely by taking the central axis of the circular through hole as a center, the first shaft section drives the friction plate to be far away from the machine shell through the sliding sleeve.
Preferably, in the parking brake system, the operating mechanism includes a rocker arm, one end of the rocker arm is fixedly connected with the third shaft section, and the other end of the rocker arm is used for being connected with a parking brake handle.
Preferably, in the parking brake system, the parking brake system further comprises a positioning lock, a limit groove is formed in the third shaft section, one end of the positioning lock is axially limited or fixedly connected with the housing, and the other end of the positioning lock is clamped with the limit groove so as to axially limit the eccentric shaft.
Preferably, in the parking brake system, the limit groove is a second annular groove;
the positioning lock comprises two positioning units, wherein one end of each positioning unit is axially limited or fixedly connected with the shell, and the other end of each positioning unit is provided with a semicircular opening which is used for being clamped with the limiting groove.
Preferably, in the parking brake system, the friction plate includes a circular plate-shaped friction material, and an annular friction plate having a better wear resistance is fixedly disposed on an inner circular end surface of the friction material.
Preferably, in the parking brake system, an annular friction plate with a better wear-resisting effect is fixedly arranged on the outer circular end surface of the friction material.
Preferably, in the parking brake system, an external spline is arranged on the outer side of the power output shaft, and the friction plate and the sliding sleeve are respectively connected with the power output shaft spline.
Preferably, in the parking brake system, the power output shaft is a hollow shaft, and an inner spline is provided on an inner side of the power output shaft.
A vehicle comprises a driving motor and a speed reducer, wherein a parking brake system is arranged on a machine shell (8) of the driving motor or the speed reducer, an eccentric shaft in the parking brake system is driven to rotate by a parking brake handle, and a power output shaft in the parking brake system is the power output shaft of the driving motor or the speed reducer.
According to the above technical scheme, the utility model provides an among the parking braking system, not only can install or integrate on driving motor or reduction gear, be connected with its transmission, but also can realize the function of parking braking through eccentric shaft, friction disc and sliding sleeve. The parking braking system is simple in structure, small in occupied space, light in weight, low in cost, beneficial to light-weight design of vehicles and beneficial to improvement of the space utilization rate of the bottoms of the vehicles.
And, in the vehicle, generally set up hydraulic disc brake system on the wheel, and the utility model provides a parking brake system generally arranges in actuating system, the vehicle underframe below promptly to can be applicable to the vehicle that is provided with hydraulic disc brake system, and do not influence hydraulic disc brake system's arranging and use.
Furthermore, because the utility model provides a be provided with hydraulic disc braking system and above-mentioned parking braking system in the vehicle to also have above-mentioned beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a parking brake system according to an embodiment of the present invention;
fig. 2 is a side view of a parking brake system according to an embodiment of the present invention;
fig. 3 is a front view of a housing of a parking brake system according to an embodiment of the present invention;
fig. 4 is a side view of a housing of a parking brake system according to an embodiment of the present invention;
fig. 5 is a front view of the eccentric shaft according to the embodiment of the present invention;
fig. 6 is a top view of an eccentric shaft provided in an embodiment of the present invention;
fig. 7 is a working schematic diagram of an eccentric shaft according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a positioning unit according to an embodiment of the present invention;
fig. 9 is a front view of a friction plate according to an embodiment of the present invention;
figure 10 is a side cross-sectional view of a friction plate provided in accordance with an embodiment of the present invention;
fig. 11 is a front view of the sliding sleeve according to the embodiment of the present invention;
fig. 12 is a side sectional view of the sliding sleeve according to the embodiment of the present invention.
Wherein:
1-shell, 2-eccentric shaft, 3-friction plate, 4-sliding sleeve, 5-positioning lock, 6-rocker arm,
7-a power output shaft, 8-a machine shell, 10-a circular through hole,
21-a first shaft section, 22-a second shaft section, 23-a third shaft section, 24-a limiting groove,
31-friction material, 32-annular friction plate, 41-first annular groove.
Detailed Description
The utility model discloses a parking braking system can be applicable to the vehicle that is provided with hydraulic disc braking system, and does not influence arranging and using of hydraulic disc braking system, the utility model also provides a vehicle that is provided with this parking braking system.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 12, fig. 1 is a front view of a parking brake system provided by an embodiment of the present invention, fig. 2 is a side view of a parking brake system provided by an embodiment of the present invention, fig. 3 is a front view of a housing of a parking brake system provided by an embodiment of the present invention, fig. 4 is a side view of a housing of a parking brake system provided by an embodiment of the present invention, fig. 5 is a front view of an eccentric shaft provided by an embodiment of the present invention, fig. 6 is a top view of an eccentric shaft provided by an embodiment of the present invention, fig. 7 is an operation principle diagram of an eccentric shaft provided by an embodiment of the present invention, fig. 8 is a structural schematic diagram of a positioning unit provided by an embodiment of the present invention, fig. 9 is a front view of a friction plate provided by an embodiment of the present invention, fig. 10 is a side sectional view of a friction plate provided by an embodiment of the present invention, fig. 11 is a front view of a sliding sleeve provided by an embodiment of, fig. 12 is a side sectional view of the sliding sleeve according to the embodiment of the present invention.
The embodiment of the utility model provides a parking braking system includes casing 1, power output shaft 7, eccentric shaft 2, friction disc 3, sliding sleeve 4, wherein:
the shell 1 is used for being mounted or integrated on a machine shell 8 of a driving motor or the speed reducer, and a circular through hole 10 for mounting the eccentric shaft 2 is arranged outside the shell 1;
the power output shaft 7 is a power output shaft of a driving motor or a speed reducer;
the friction plate 3 is positioned on the outer side of the machine shell 8, is sleeved on the power output shaft 7 and is circumferentially fixed with the power output shaft 7;
the sliding sleeve 4 is located on the outer side of the friction plate 3, is sleeved on the power output shaft 7 and is circumferentially fixed with the power output shaft 7, and the power output shaft 7, the friction plate 3 and the sliding sleeve 4 are coaxially arranged.
During the parking brake:
when the eccentric shaft 2 is driven to rotate towards a preset direction by taking the central axis of the circular through hole 10 as a center, the eccentric shaft 2 pushes the friction plate 3 to press the shell 1 or the machine shell 8 through the sliding sleeve 4, so that the purpose of parking and braking is achieved;
when the eccentric shaft 2 is driven to rotate reversely by taking the central axis of the circular through hole 10 as a center, the eccentric shaft 2 drives the friction plate 3 to be far away from the machine shell 8 through the sliding sleeve 4 so as to release parking braking.
According to the above technical scheme, the embodiment of the utility model provides an among the parking braking system, not only can install or integrate on driving motor or reduction gear, be connected in order to provide drive power and braking force with its transmission, but also can realize parking braking's function through eccentric shaft 2, friction disc 3 and sliding sleeve 4. The parking braking system is simple in structure, small in occupied space, light in weight, low in cost, beneficial to light-weight design of vehicles and beneficial to improvement of the space utilization rate of the bottoms of the vehicles.
And, in the vehicle, generally set up hydraulic disc brake system on the wheel, and the utility model provides a parking brake system generally arranges in actuating system, vehicle underframe below promptly to can be applicable to the vehicle that is provided with hydraulic disc brake system, and do not influence hydraulic disc brake system's arranging and use.
It should be noted that the "preset direction" referred to herein may be a clockwise direction or a counterclockwise direction, which is determined by the specific eccentric direction of the eccentric shaft 2 and the position of the friction plate.
The housing 1 referred to herein is mounted or integrated on the housing of a drive motor (e.g., a disc motor) or a reducer. Therefore, the embodiment of the utility model provides a parking braking system's the position of arranging is just driving motor or reduction gear on the vehicle the position of arranging.
Furthermore, it should be noted that the embodiment of the present invention provides a parking brake system with the following basic principle: when the vehicle is coasting, the rotation of the wheels drives the rotation of the power output shaft of the driving device such as the motor and the speed reducer through the power transmission system, and if the degree of freedom of the rotation of the power output shaft is eliminated (through the parking brake system), the purpose of parking brake can be achieved.
In a particular embodiment, as shown in fig. 1 and 2, the housing 1 is embodied as an annular housing, which can be mounted on a machine housing 8 of the drive motor or of the retarder by means of a connection or can be formed integrally with the machine housing 8. The friction plate 3, the sliding sleeve 4 and the power output shaft 7 extending out of the shell 1 are all positioned in the annular shell, so that the shell 1 can play a certain protection role on the friction plate 3, the sliding sleeve 4 and the like. The circular through hole 10 is formed in the housing 1, and the housing 1 has a relatively thick thickness, so that the eccentric shaft 2 in the circular through hole 10 can be positioned in a certain axial direction, and the eccentric shaft 2 is prevented from being inclined. During the parking brake, the friction lining 3 is pressed against the machine housing 8 of the drive motor or of the retarder.
However, without being limited thereto, there are many possibilities for the specific structure of the housing 1, and mounting seats of other structures than the annular housing may be used. For example, it is also possible to make the housing 1 in a "barrel" or L-shaped configuration, the housing 1 of which includes a bottom provided with a central hole for extending the power take-off shaft 7 and a side wall provided with the above-mentioned circular through hole 10 (equivalently, the side wall needs to be provided with a greater thickness to avoid tilting of the eccentric shaft 2). Thus, during the parking brake, the friction linings 3 are pressed against the bottom of the housing 1 and not directly against the machine housing 8 of the drive motor or of the retarder.
However, the above description is only about the most preferred embodiment of the housing 1, and the present invention is not limited to the specific structure of the housing 1, and those skilled in the art can implement the present invention according to the actual needs.
In the specific embodiment, as shown in fig. 2, 11 and 12, the peripheral side of the sliding sleeve 4 is provided with a first annular groove 41, and the first annular groove 41 is coaxial with the power output shaft 7.
Specifically, as shown in fig. 5 to 7, the eccentric shaft 2 includes a first shaft segment 21, a second shaft segment 22, and a third shaft segment 23, the first shaft segment 21 is inserted into the first annular groove 41, the second shaft segment 22 is located in the circular through hole 13, the third shaft segment 23 is located outside the circular through hole 13 for connecting with the operating mechanism, and an eccentricity e greater than zero exists between the first shaft segment 21 and the second shaft segment 22. Namely: the central axis of the first shaft segment 21 is a first central axis a; the second shaft section 22, the third shaft section 23 and the circular through hole 13 are coaxial, and the central axis of the second shaft section is a second central axis b; the distance between the first central axis a and the second central axis b is the eccentricity e, and e is greater than 0.
Thus, during parking braking:
when the operating mechanism drives the eccentric shaft 2 to rotate in a predetermined direction around the central axis of the circular through hole 13, the first shaft segment 21 pushes the friction plate 3 to press the housing 1 or the machine casing 8 through the sliding sleeve 4 (for example, referring to fig. 7, when the eccentric shaft 2 rotates around the first central axis a in the direction of the arrow, the first shaft segment 21 and the second central axis b thereof are shifted to the left to press the friction plate 3 through the sliding sleeve 4, and the shift process is changed from the upper diagram to the lower diagram in fig. 7 when viewed from the side surface thereof);
when the operating mechanism drives the eccentric shaft 2 to rotate reversely around the central axis of the circular through hole 13, the first shaft segment 21 drives the friction plate 3 away from the machine housing 8 through the sliding sleeve 4 (correspondingly, the displacement of the eccentric shaft 2 changes from the lower diagram to the upper diagram in fig. 7).
Specifically, the specific value range of the eccentricity e is firstly larger than the gap between the friction plate 3 and the housing 1, and if the gap between the friction plate 3 and the housing 1 is generally zero, e is larger than 0.
Further, factors such as the general wear thickness (or acceptable wear thickness) of the friction plate 3 need to be considered, that is, the specific value range of the eccentricity e is larger than the sum of the gap j between the friction plate 3 and the housing 1 and the general wear thickness h of the friction plate 3, that is, e > (j + h). Finally, the purposes of ensuring longer service life and better braking effect of the parking braking system are achieved.
It should be noted that, when the eccentric shaft 2 rotates and the friction plate 3 presses the housing 1, the distance that the first shaft segment 21, the sliding sleeve 4 and the friction plate 3 move transversely to the housing 1 is generally less than or equal to the eccentricity e. This is because, if the friction plate 3 reduces in thickness because of wearing and tearing, can guarantee that parking braking system still can reach effectual braking effect through increasing the turned angle of eccentric shaft 2, make parking braking system have longer life.
Thus, it is easily understood that the forward and reverse rotation angles of the eccentric shaft 2 are both smaller than 90 degrees during the parking brake.
In a specific embodiment, the operating mechanism for controlling the eccentric shaft 2 includes a rocker arm 6 and a parking brake handle, and a transmission connection mechanism (such as a cable, a connecting rod, etc.) therebetween, wherein one end of the rocker arm 6 is fixedly connected to the third shaft section 23, and the other end is used for being connected to the parking brake handle.
In a specific embodiment, the parking brake system further comprises a positioning lock 5. The third shaft section 23 is provided with a limit groove 24, one end of the positioning lock 5 is axially limited or fixedly connected with the shell 1, and the other end of the positioning lock is clamped with the limit groove 24 so as to axially limit the eccentric shaft 2.
Preferably, the limit groove 24 is a second annular groove; the positioning lock 5 comprises two positioning units, one end of each positioning unit is axially limited or fixedly connected with the shell 1 (for example, detachably connected with the shell 1 through a bolt), and the other end of each positioning unit is provided with a semicircular opening used for being clamped with the limiting groove 24. See in particular fig. 8.
In the specific embodiment, the friction plate 3 includes a friction material 31 having a circular plate shape, and a more wear-resistant annular friction plate 32 is fixedly provided on an inner circular end surface of the friction material 31.
Furthermore, an annular friction plate 32 with better wear-resisting effect is also fixedly arranged on the outer circular end surface of the friction material 31. Therefore, when the annular friction plate 32 on one surface of the friction plate 3 is excessively worn, the friction plate can be continuously used by turning the outer side of the friction plate 3 to the inner side and then reinstalling the friction plate.
Specifically, the friction material 31 and the annular friction plate 32 are fixedly connected by bonding or other non-detachable connection means.
In the specific embodiment, the outer side of the power output shaft 7 is provided with an external spline, and the friction plate 3 and the sliding sleeve 4 are respectively in spline connection with the power output shaft 7 so as to achieve the purpose of circumferential fixation (i.e. relative rotation is not possible).
Specifically, the power output shaft 7 may be a hollow shaft or a solid shaft, and if an internal spline is provided on the inner side of the shaft, the shaft can be used for connecting other driving systems.
But not limited to this, the friction plate 3, the sliding sleeve 4 and the power output shaft 7 can be connected by common key connection or by other special-shaped structures to achieve the purpose of circumferential limit; the power output shaft 7 can be connected with other driving systems by adopting a flange connection or other transmission connection structures. The present invention is not limited to this.
Furthermore, the specific embodiment of the utility model provides a vehicle is provided with driving motor and reduction gear in this vehicle, be provided with parking braking system as above on the machine housing 8 of driving motor or reduction gear, eccentric shaft 2 in this parking braking system is rotated by the drive of parking brake handle, and power output shaft 7 in this parking braking system is the power output shaft in driving motor or the reduction gear for connect vehicle actuating system, with transmission drive power.
Preferably, the vehicle may be an electric vehicle. However, the present invention is not limited to the specific type of the vehicle, the specific structure of the motor or the speed reducer, and those skilled in the art can make specific settings according to actual needs.
In specific implementation, the assembly process of the parking brake system comprises the following steps:
assembling a plurality of friction plates 3 and sliding sleeves 4 on a power output shaft 7, and connecting the friction plates 3 and the sliding sleeves 4 on the power output shaft 7 by adopting loosely matched splines so that the friction plates 3 and the sliding sleeves 4 can axially slide but are circumferentially limited (cannot relatively rotate);
then the eccentric shaft 2 is assembled in the circular through hole 13 of the shell 1, the first shaft section 21 of the eccentric shaft 2 falls into the annular groove (the section of the groove is U-shaped) of the sliding sleeve 4, and the friction plate 3 is ensured to be in a separated and non-pressed state;
the semicircular opening of the positioning lock 5 falls into the limit groove 24 of the eccentric shaft 2, the positioning lock 5 is fixed on the shell 1, and the rocker arm 6 is locked on the eccentric shaft 2 by a nut.
In a driving state, the friction plate 3 is not pressed tightly, and no braking torque is generated in the system;
when parking braking is needed, a driver operates the rocker arm 6 to drive the eccentric shaft 2 to rotate in the circular through hole 13 by operating the parking braking handle, due to the existence of the eccentricity e, the eccentric shaft 2 pushes the sliding sleeve 4 to move on the power output shaft 7 towards the direction of pressing the friction plate 3, along with the movement of the friction plate 3, the inner side of the friction plate is extruded on the shell 1, the outer side of the friction plate is pressed by the sliding sleeve 4, and due to the fact that the friction plate 3 and the power output shaft 7 are in non-rotatable splined connection (namely circumferential limit), the pressed friction plate 3 gradually generates braking torque, the torque limits the rotation of the power output shaft 7 relative to the shell 1, the torque and the rotation motion transmitted to the power output shaft 7 from the wheel side are limited by the friction torque, so that the sliding of an automobile in a.
In the specific embodiment, the number of the friction plates 3 can be selected according to the required braking torque, a dry friction mode is adopted in the system, high sealing performance is not required, and the system can also be used as an emergency service braking system.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The parking brake system is characterized by comprising a shell (1), a power output shaft (7), an eccentric shaft (2), a friction plate (3) and a sliding sleeve (4), wherein:
the casing (1) is used for being mounted or integrated on a machine shell (8) of a driving motor or a speed reducer, and a circular through hole (10) for mounting the eccentric shaft (2) is formed in the outer side face of the casing (1);
the power output shaft (7) is a power output shaft of the driving motor or the speed reducer;
the friction plate (3) is positioned on the outer side of the machine shell (8), sleeved on the power output shaft (7) and fixed with the power output shaft (7) in the circumferential direction;
the sliding sleeve (4) is positioned on the outer side of the friction plate (3), is sleeved on the power output shaft (7), is circumferentially fixed with the power output shaft (7), and is coaxially arranged with the power output shaft (7), the friction plate (3) and the sliding sleeve (4);
when the eccentric shaft (2) rotates towards a preset direction by taking the central axis of the circular through hole (10) as a center, the eccentric shaft (2) pushes the friction plate (3) to press the shell (1) or the machine shell (8) through the sliding sleeve (4);
when the eccentric shaft (2) rotates reversely by taking the central axis of the circular through hole (10) as a center, the eccentric shaft (2) drives the friction plate (3) to be far away from the machine shell (8) through the sliding sleeve (4).
2. Parking brake system according to claim 1, characterized in that the sliding sleeve (4) is provided with a first annular groove (41) on the peripheral side, said first annular groove (41) being coaxial with said power take-off shaft (7);
the eccentric shaft (2) comprises a first shaft section (21), a second shaft section (22) and a third shaft section (23), the first shaft section (21) is inserted into the first annular groove (41), the second shaft section (22) is positioned in the circular through hole (10), the third shaft section (23) is positioned outside the circular through hole (10) and is used for being connected with an operating mechanism, and an eccentric distance larger than zero exists between the first shaft section (21) and the second shaft section (22);
when the operating mechanism drives the eccentric shaft (2) to rotate towards the preset direction by taking the central axis of the circular through hole (10) as a center, the first shaft section (21) pushes the friction plate (3) to press the shell (1) or the machine shell (8) through the sliding sleeve (4);
when the operating mechanism drives the eccentric shaft (2) to rotate reversely by taking the central axis of the circular through hole (10) as a center, the first shaft section (21) drives the friction plate (3) to be far away from the machine shell (8) through the sliding sleeve (4).
3. Parking brake system according to claim 2, characterized in that the operating mechanism comprises a rocker arm (6), one end of the rocker arm (6) being secured to the third shaft section (23) and the other end being adapted for connection to a parking brake handle.
4. The parking brake system according to claim 2, further comprising a positioning lock (5), wherein a limiting groove (24) is formed in the third shaft section (23), one end of the positioning lock (5) is axially limited or fixedly connected with the housing (1), and the other end of the positioning lock is clamped with the limiting groove (24) so as to axially limit the eccentric shaft (2).
5. Parking brake system according to claim 4, characterized in that the limiting groove (24) is a second annular groove;
the positioning lock (5) comprises two positioning units, wherein one end of each positioning unit is axially limited or fixedly connected with the shell (1), and the other end of each positioning unit is provided with a semicircular opening which is used for being connected with the limiting groove (24) in a clamping mode.
6. Parking brake system according to claim 1, characterized in that the friction plate (3) comprises a circular plate-shaped friction material (31), and an annular friction plate (32) with better wear resistance is fixedly arranged on the inner circular end surface of the friction material (31).
7. Parking brake system according to claim 6, characterized in that an annular friction plate (32) with a better wear resistance is fixedly arranged on the outer circular end surface of the friction material (31).
8. Parking brake system according to claim 1, characterized in that the power take-off shaft (7) is provided with external splines on its outside, and the friction plates (3) and the sliding sleeve (4) are splined to the power take-off shaft (7), respectively.
9. Parking brake system according to any of claims 1-8, characterized in that the power take-off shaft (7) is a hollow shaft, which is provided with internal splines on its inside.
10. Vehicle comprising a drive motor and a retarder, characterized in that the machine housing (8) of the drive motor or the retarder is provided with a parking brake system according to any of claims 1-9, in which an eccentric shaft (2) is driven in rotation by a parking brake lever (9), and in which the power take-off shaft (7) is the power take-off shaft of the drive motor or the retarder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920385803.1U CN209833598U (en) | 2019-03-25 | 2019-03-25 | Parking brake system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920385803.1U CN209833598U (en) | 2019-03-25 | 2019-03-25 | Parking brake system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209833598U true CN209833598U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920385803.1U Withdrawn - After Issue CN209833598U (en) | 2019-03-25 | 2019-03-25 | Parking brake system and vehicle |
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| CN (1) | CN209833598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849871A (en) * | 2019-03-25 | 2019-06-07 | 核心驱动科技（金华）有限公司 | Parking braking system and vehicle |
| CN114087334A (en) * | 2021-11-17 | 2022-02-25 | 浙江盘毂动力科技有限公司 | Hydraulic and mechanical combined type comprehensive transmission device and vehicle |
-
2019
- 2019-03-25 CN CN201920385803.1U patent/CN209833598U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849871A (en) * | 2019-03-25 | 2019-06-07 | 核心驱动科技（金华）有限公司 | Parking braking system and vehicle |
| CN109849871B (en) * | 2019-03-25 | 2023-10-10 | 浙江盘毂动力科技有限公司 | Parking brake system and vehicle |
| CN114087334A (en) * | 2021-11-17 | 2022-02-25 | 浙江盘毂动力科技有限公司 | Hydraulic and mechanical combined type comprehensive transmission device and vehicle |
| CN114087334B (en) * | 2021-11-17 | 2023-11-03 | 浙江盘毂动力科技有限公司 | Hydraulic mechanical combined type comprehensive transmission device and vehicle |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
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Granted publication date: 20191224 Effective date of abandoning: 20231010 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191224 Effective date of abandoning: 20231010 |