Ratchet wheel type locking device for electronic mechanical brake control system

Abstract

The utility model discloses a ratchet wheel type locking device for an electronic mechanical brake control system, which comprises a ratchet wheel arranged on a transmission shaft of the brake control system; the pawl is rotationally arranged on one side of the ratchet wheel, the first end of the pawl is matched with ratchets on the ratchet wheel, a movable connector is arranged at the second end of the pawl, and the connector can slide in the length direction of the pawl; the telescopic execution component is arranged at the position close to the second end of the pawl, a movable extension rod of the telescopic execution component is connected with the connector, and when the movable extension rod of the telescopic execution component is ejected out, the first end of the pawl moves towards the ratchet wheel to abut against the ratchet. The action of the telescopic execution part can be matched with the pawl and ratchet wheel structure to achieve rapid locking of the transmission shaft, the parking function is achieved, and the automobile slope sliding accident is effectively prevented from happening. The electronic mechanical brake control system can effectively implement the locking function in time when the EPB function is started, and is quick in response, simple and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile brake control system, concretely is a kind of ratchet type locking device for electronic mechanical brake control system. BACKGROUND

[0002] With the development of modern traffic tools, the requirements for brake system are continuously improved, not only need to ensure safe and reliable braking effect, but also need to have high response speed and control accuracy under different working conditions. Although the traditional hydraulic brake system has been developed for many years and is mature in technology, some inherent defects are still difficult to overcome, such as complex pipeline design, long response time and high maintenance cost. In recent years, with the progress of electronic technology and mechatronic technology, electro-mechanical brake system (EMB, Electro-Mechanical Braking System) gradually becomes a new type of brake solution. The system controls the motor through electronic signal, and then drives the brake mechanism to realize the brake control of vehicle. However, the electro-mechanical brake system also faces some challenges in the application process, such as high reliability requirement for electrical system, performance under extreme temperature, necessity of redundancy design, etc. Therefore, how to optimize the design of electro-mechanical brake system so that it can effectively and timely implement locking function when starting EPB function, and effectively prevent the occurrence of automobile hill-starting accident. SUMMARY

[0003] The utility model provides a kind of ratchet type locking device for electronic mechanical brake control system, can realize that electronic mechanical brake control system can effectively and timely implement locking function when starting EPB function, reaction is fast, simple and reliable.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of ratchet type locking device for electronic mechanical brake control system, including ratchet, is installed on the transmission shaft of brake control system;Pawl, rotationally arranged in one side of the ratchet, the first end of the pawl is matched with the ratchet teeth on the ratchet, the second end of the pawl is provided with movable connector, the connector can slide along the length direction of pawl;Telescopic execution component, it is arranged at the position close to the second end of pawl, the movable extension rod of the telescopic execution component is connected with the connector, the movable extension rod of the telescopic execution component is ejected, and the first end of pawl is moved to ratchet and is resisted with ratchet teeth, the action of telescopic execution component can be matched with the ratchet structure of pawl and realize the quick locking of transmission shaft, realize parking function, effectively prevent the occurrence of automobile hill-starting accident.

[0005] As preferred, the movable connector comprises a pivot base and a ball head arranged at one end of the pivot base, the pivot base is connected with one end of the movable extension rod of the telescopic actuating component through a pivot, and the ball head is embedded into the sliding groove at the second end of the pawl to slide, and the pawl can be pushed to rotate at multiple angles through the sliding of the ball head in the sliding groove, which is fast and reliable.

[0006] As preferred, the second end of the pawl is provided with a contact switch on the side away from the telescopic actuating component, the contact switch is installed on the mounting plate of the brake control system, and the contact switch sends a connection signal to complete the self-check of the EMB system on the locking mechanism.

[0007] As preferred, the telescopic actuating component is a bistable electromagnetic valve, which comprises a shell and a movable iron core group axially penetrating the shell, two coils are arranged in the shell and axially along the movable iron core group, a permanent magnet is arranged between the two coils, and the movable iron core group is connected with the movable extension rod, so that the bistable electromagnetic valve can realize the linear motion of the movable extension rod, and any single coil of the two coils can realize the push-pull dual-purpose function, which is fast, stable and reliable.

[0008] As preferred, the inner side of the shell is provided with an upper cover and a lower cover at two ends respectively, so as to guide and support the movement of the movable iron core group.

[0009] Compared with the prior art, the utility model has the advantages of:

[0010] The utility model discloses a kind of quick locking mechanism for vehicle, which comprises transmission shaft, pawl, ratchet wheel, connector, telescopic actuating component and brake control system, the transmission shaft is connected with the driving shaft of vehicle, the pawl is arranged on the transmission shaft, the ratchet wheel is arranged on the transmission shaft, the connector is arranged on the pawl, the telescopic actuating component is arranged on the ratchet wheel, and the brake control system is arranged on the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the front view structural drawing of the utility model;

[0012] Figure 2 It is the ratchet wheel installation schematic view of the utility model;

[0013] Figure 3 It is the pawl schematic view of the utility model;

[0014] Figure 4 It is the structure diagram of the bistable electromagnetic valve of the utility model;

[0015] Figure 5 It is the structure schematic view of the connector of the utility model.

[0016] Reference signs:

[0017] 1, connector, 2, contact switch, 2-1, step, 2-2, transmission shaft, 3, pawl, 3-1, sliding groove, 4, ratchet wheel, 4-1, coil, 4-2, upper cover, 4-3, shell, 4-4, lower cover, 4-6, permanent magnet, 5, telescopic actuator, 5-1, ball head, 5-2, pivot base, 6, mounting plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0019] As Figures 1-5 shown in the embodiments of the utility model, the technical solutions are as follows: a ratchet wheel type locking device for an electronic mechanical brake control system, comprising a ratchet wheel 4 installed on a transmission shaft 2-2 of the brake control system; a pawl 3 rotatably arranged on one side of the ratchet wheel 4, a first end of the pawl 3 being matched with a ratchet tooth on the ratchet wheel 4, a second end of the pawl 3 being provided with a movable connector 1, the connector 1 being slidable along the length direction of the pawl 3; a telescopic actuator 5 arranged at a position close to the second end of the pawl 3, a movable extending rod of the telescopic actuator 5 being connected with the connector 1, the movable extending rod of the telescopic actuator 5 being capable of moving the first end of the pawl 3 to move towards the ratchet wheel 4 and abut against the ratchet tooth when the movable extending rod is pushed out, the action of the telescopic actuator 5 being capable of cooperating with the pawl and ratchet wheel structure to realize quick locking of the transmission shaft 2-2 and realize the parking function, and effectively prevent the occurrence of the car rolling down the hill accident.

[0020] In use, the ratchet wheel 4 is pressed and installed on the transmission shaft 2-2, the step 2-1 on the transmission shaft 2-2 is a positioning surface, the pressing and installation is to the bottom, and the ratchet wheel 4 is ensured to be flatly attached to the positioning surface of the transmission shaft 2-2; then the connector 1, the pawl 3 and the telescopic actuator 5 are sequentially connected with the pawl 3 and fixed on the mounting plate 6.

[0021] In the embodiment, as Figure 5 shown, the movable connector 1 comprises a pivot base 5-2 and a ball head 5-1 arranged at one end of the pivot base 5-2, one end of the pivot base 5-2 is connected with the movable extending rod of the telescopic actuator 5 through a pivot, the ball head 5-1 is embedded in the sliding groove 3-1 at the second end of the pawl 3 and slides, the ball head 5-1 is capable of multi-angle pushing the pawl 3 to rotate by sliding in the sliding groove 3-1, which is fast and reliable, the shape of the sliding groove 3-1 is matched with the ball head 5-1, and the ball head 5-1 will not be separated from the sliding groove 3-1 when sliding in the sliding groove 3-1.

[0022] In the embodiment, as Figure 1The second end of the pawl 3 is provided with a contact switch 2 away from the telescopic actuating component 5, the contact switch 2 is installed on the mounting plate 6 of the brake control system, and the contact switch 2 sends a connection signal to complete the self-check of the EMB system on the locking mechanism.

[0023] Preferably, the telescopic actuating component 5 is a bistable electromagnetic valve, which comprises a shell 4-3 and a movable iron core group 4-5 axially penetrating the shell 4-3, two coils 4-1 are axially installed in the shell 4-3 along the movable iron core group 4-5, and a permanent magnet 4-6 is installed between the two coils 4-1, the movable iron core group 4-5 is connected with a movable extension rod, the bistable electromagnetic valve can realize the linear motion of the movable extension rod, when the left coil 4-1 is powered, the movable iron core group 4-5 moves linearly to the left, at this time, the left end of the electromagnet realizes the pushing function, and the right end realizes the pulling function; when the right coil 4-1 is powered, the movable iron core group 4-5 moves linearly to the right, at this time, the right end of the electromagnet realizes the pushing function, and the left end realizes the pulling function. After the coil is powered, the movable iron core of the electromagnet moves linearly, and after the other coil is powered, the movable iron core moves reversely, and the arbitrary single coil can realize the pushing and pulling functions, and the corresponding is rapid, stable and reliable. The inner sides of the shell 4-3 are respectively provided with an upper cover 4-2 and a lower cover 4-4, and the movement of the movable iron core group 4-5 can be guided and supported.

[0024] When the vehicle starts to drive, the telescopic actuating component 5 is powered to retract, the pawl 3 on the connector 1 is driven to rotate, the pawl 3 rotates around the positioning column and is released from the ratchet wheel 4, at this time, the ratchet wheel 4 is in a free rotating state, the telescopic actuating component 5 is maintained in the retracted state, and the contact switch 2 sends an open signal to ensure that the locking state is released; when the EPB function of the vehicle is started, the telescopic actuating component 5 is powered to extend, the pawl 3 is engaged with the ratchet wheel 4, the ratchet wheel 4 moves clockwise by one tooth pitch in the engaging process, the pawl 3 and the ratchet wheel 4 are locked stably, at this time, the end of the pawl 3 contacts the contact switch 2, the contact switch 2 sends a connection signal to complete the self-check of the EMB system on the locking mechanism, so that the parking function of the EMB is realized.

[0025] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indications also change accordingly.

[0026] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A ratchet-type locking device for an electromechanical braking control system, characterized in that, The utility model relates to a brake control system, comprising: a ratchet wheel (4) mounted on a transmission shaft (2-2) of the brake control system; a pawl (3) rotatably arranged on one side of the ratchet wheel (4), a first end of the pawl (3) being matched with a ratchet tooth on the ratchet wheel (4), a second end of the pawl (3) being provided with a movable connector (1), the connector (1) being slidable along the length direction of the pawl (3); a telescopic actuating component (5) arranged at a position close to the second end of the pawl (3), a movable extension rod of the telescopic actuating component (5) being connected with the connector (1), the movable extension rod of the telescopic actuating component (5) being pushed out to move the first end of the pawl (3) to abut against the ratchet tooth of the ratchet wheel (4).

2. The ratchet-type locking device for an electromechanical brake control system according to claim 1, characterized by: The movable connector (1) comprises a rotating shaft seat (5-2) and a ball head (5-1) arranged at one end of the rotating shaft seat (5-2), the rotating shaft seat (5-2) being connected with one end of the movable extension rod of the telescopic actuating component (5) through a rotating shaft, and the ball head (5-1) being embedded in a sliding groove (3-1) at the second end of the pawl (3) to slide.

3. The ratchet-type locking device for an electromechanical brake control system according to claim 1, characterized by: The second end of the pawl (3) is provided with a contact switch (2) on the side away from the telescopic actuating component (5), and the contact switch (2) is mounted on a mounting plate (6) of the brake control system.

4. The ratchet-type locking device for an electromechanical brake control system according to claim 1, characterized by: The telescopic actuating component (5) is a bistable electromagnetic valve, comprising a shell (4-3) and a movable iron core group (4-5) axially penetrating the shell (4-3), two coils (4-1) being mounted in the shell (4-3) along the movable iron core group (4-5) in the axial direction, a permanent magnet (4-6) being mounted between the two coils (4-1), and the movable iron core group (4-5) being connected with the movable extension rod.

5. The ratchet-type locking device for an electromechanical brake control system according to claim 4, characterized by: The inner side of the shell (4-3) is respectively provided with an upper cover (4-2) and a lower cover (4-4) at both ends.

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