Parking mechanism for electromechanical brake

Abstract

The parking mechanism for the electromechanical brake comprises an installation frame, a parking device, a parking device and a parking device, an opening is formed in the installation frame, a motor shaft penetrates through the opening, and the motor shaft penetrates through the opening and then is connected with a ratchet wheel; a pin shaft is mounted on the pin shaft seat, and a pawl is rotatably mounted on the pin shaft; the bistable electromagnetic valve is mounted in the mounting frame, and the output end of the bistable electromagnetic valve is in transmission connection with the pawl; the pawl comprises a cylindrical center part, a pawl round hole is formed in the center of the center part, and the pawl is installed on the pin shaft through the pawl round hole. Through the arrangement of the bistable electromagnetic valve, the pawl and other structures, the pawl is driven by the output end of the bistable electromagnetic valve to rotate around the pin shaft, actions of cutting in the ratchet wheel and popping up and releasing the ratchet wheel of the pawl are achieved, and due to the fact that the pawl is provided with the first arc piece and matched with the pin shaft base, the pawl can be better stressed and supported; and the strength reliability of the pawl is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a parking mechanism technical field especially, it relates to a parking mechanism for electromechanical brake. BACKGROUND

[0002] Electronic mechanical wire control brake products need to meet the parking brake function in addition to meeting the service brake function. The parking brake function relies on the controller at the wheel end and the traditional ratchet pawl structure to achieve locking and releasing of the driving motor, thereby achieving the parking function.

[0003] Through the search, the application scheme of Chinese patent application No. CN201520252189.3 discloses a parking pawl structure, which comprises a transmission housing, a parking pawl rotary shaft, a pawl body and a parking support, the parking support and the pawl body are rotationally connected with the parking pawl rotary shaft respectively, the parking support is arranged on the pawl body, a spring is arranged above the parking support, the end of the parking pawl rotary shaft is arranged in the transmission housing, a friction table is arranged on the end face of the side, which is in contact with the transmission housing, of the pawl body, the friction table is protruded on the end face of the pawl body, and a gap is arranged between the end face of the pawl body, which is away from the friction table, and the transmission housing. The parking pawl structure in the above document has the following disadvantages: although the use demand can be met, the stress stability of the pawl is insufficient, and improvement is still needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a parking mechanism for electromechanical brake.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A parking mechanism for electromechanical brake, comprising:

[0007] A mounting frame is provided with an opening, the opening is used for the motor shaft to pass through, and the motor shaft is connected with a ratchet after penetrating through the opening;

[0008] A pin shaft seat is installed with a pin shaft, and the pawl is rotatably installed on the pin shaft;

[0009] A bistable solenoid valve is installed in the mounting frame, and the output end of the bistable solenoid valve is in transmission connection with the pawl;

[0010] The pawl comprises:

[0011] A central part is cylindrical, a pawl round hole is arranged in the center of the central part, and the pawl is installed on the pin shaft through the pawl round hole;

[0012] The first pawl arm is arranged on one side of the outer wall of the center part, and the first pawl arm is in transmission connection with the output end of the bistable electromagnetic valve.

[0013] The second pawl arm is arranged on the other side of the outer wall of the center part, and the end side wall of the second pawl arm is provided with a clamping part matched with the ratchet wheel.

[0014] The first arc piece is arranged on one side of the outer wall of the second pawl arm, and the first arc piece is in a circular arc structure matched with the pin shaft seat.

[0015] As a further scheme of the utility model, the installation frame is detachably installed on the controller through bolts, and electrical connection is realized based on the tuning fork PIN when the installation frame is installed on the controller.

[0016] As a further scheme of the utility model, the clamping part comprises a plurality of sliding tooth blocks, the sliding tooth blocks are floatingly installed on the end side wall of the second pawl arm through springs, the adjacent sliding tooth blocks are compactly arranged, and one side of the sliding tooth block is in sliding connection with the end inner wall of the second pawl arm through a side groove.

[0017] As a further scheme of the utility model, the sliding tooth blocks cooperatively form a triangular structure.

[0018] As a further scheme of the utility model, the first pawl arm is provided with a second arc piece through a connecting piece, and the second arc piece is in a circular arc structure matched with the pin shaft seat.

[0019] As a further scheme of the utility model, the connecting piece comprises:

[0020] The sliding sleeve is in shape adaptation with the center part, and the sliding sleeve is in sliding connection with the outer wall of the first pawl arm, and the second arc piece is integrally arranged on one side of the outer wall of the sliding sleeve.

[0021] The fixed knob is in threaded connection with the inner wall of the sliding sleeve, and the fixed knob is used for fixing the sliding sleeve on the first pawl arm.

[0022] The utility model discloses the beneficial effects are:

[0023] 1. The utility model discloses a bistable electromagnetic valve, pawl and other structures are arranged, the pawl is driven by the output end of the bistable electromagnetic valve and rotates around the pin shaft, realizes the action of cutting into the ratchet wheel and the pawl and pops out and releases the ratchet wheel, because the pawl is provided with the first arc piece, and is matched with the pin shaft seat, therefore can better force support, guarantees the strength reliable of pawl.

[0024] 2. The utility model discloses a slide tooth block structure, can be more timely and engage locking with ratchet wheel, has improved reliability.

[0025] 3. The utility model discloses a slide sleeve, second arc piece structure, can install ratchet pawl round hole on pin shaft, adjust the position of slide sleeve, make second arc piece cooperate with pin shaft seat, and pass through fixed knob fixed, further improved the stability and stress effect of structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The utility model provides a kind of structure schematic diagram of parking mechanism for electromechanical brake;

[0027] Figure 2 The utility model provides a kind of structure schematic diagram of ratchet pawl of parking mechanism for electromechanical brake;

[0028] Figure 3 The utility model provides a kind of structure schematic diagram of ratchet pawl of parking mechanism for electromechanical brake of embodiment 2;

[0029] Figure 4 The utility model provides a kind of structure schematic diagram of slide sleeve of parking mechanism for electromechanical brake of embodiment 2 from first ratchet pawl arm.

[0030] In the drawing: 1- mounting frame, 2- pin shaft, 3- first ratchet pawl arm, 4- output end, 5- bistable solenoid valve, 6- ratchet wheel, 7- motor shaft, 8- slide tooth block, 9- second arc piece, 10- second ratchet pawl arm, 11- clamping portion, 12- first arc piece, 13- ratchet pawl round hole, 14- slide sleeve, 15- fixed knob. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be described in further detail in connection with specific embodiments.

[0032] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0033] Embodiment 1

[0034] A kind of parking mechanism for electromechanical brake, as shown in Figures 1-4 It includes:

[0035] Mounting frame 1, the mounting frame 1 is provided with opening, opening is for motor shaft 7 to pass through, and motor shaft 7 is connected with ratchet wheel 6 after penetrating opening;

[0036] The pin shaft seat is provided with a pin shaft 2, and the pin shaft 2 is rotatably provided with a pawl;

[0037] The bistable electromagnetic valve 5 is installed in the mounting frame 1, and the output end 4 of the bistable electromagnetic valve 5 is in transmission connection with the pawl;

[0038] The pawl comprises:

[0039] The center part is cylindrical, and a pawl round hole 13 is arranged in the center of the center part, and the pawl is installed on the pin shaft 2 through the pawl round hole 13;

[0040] The first pawl arm 3 is arranged on one side of the outer wall of the center part, and the first pawl arm 3 is in transmission connection with the output end 4 of the bistable electromagnetic valve 5;

[0041] The second pawl arm 10 is arranged on the other side of the outer wall of the center part, and the end side wall of the second pawl arm 10 is provided with a clamping part 11 matched with the ratchet wheel 6;

[0042] The first arc piece 12 is arranged on one side of the outer wall of the second pawl arm 10, and the first arc piece 12 is in the form of a circular arc matched with the pin shaft seat; when the pawl is installed on the pin shaft 2, the first arc piece 12 slides on the outer wall of the pin shaft seat;

[0043] By arranging the bistable electromagnetic valve 5, the pawl and other structures, the pawl is driven by the output end 4 of the bistable electromagnetic valve 5 to rotate around the pin shaft 2, so as to realize the action of cutting into the ratchet wheel 6 and popping out to release the ratchet wheel 6. Since the pawl is provided with the first arc piece 12 and matched with the pin shaft seat, the pawl can be better supported in force, thereby ensuring the strength reliability of the pawl.

[0044] Further comprising a controller, the mounting frame 1 and the controller are provided with a matched tuning fork PIN on one side adjacent to each other, the mounting frame 1 is detachably installed on the controller through bolts, and when the mounting frame 1 is installed on the controller, electrical connection is realized based on the tuning fork PIN.

[0045] Embodiment 2

[0046] In order to better engage, refer to Figure 3 、 Figure 4 A parking mechanism for a mechanical and electrical brake, based on the embodiment 1, the clamping part 11 comprises a plurality of sliding tooth blocks 8, the sliding tooth blocks 8 are floatingly installed on the end side wall of the second pawl arm 10 through springs; the adjacent sliding tooth blocks 8 are compactly arranged, and one side of the sliding tooth blocks 8 is in sliding connection with the end inner wall of the second pawl arm 10 through a side groove;

[0047] By arranging the sliding tooth blocks 8 and other structures, the ratchet wheel 6 can be engaged and locked more timely, and the reliability is improved.

[0048] For better engagement locking; as Figure 3 The sliding tooth block 8 cooperates to form a triangular structure.

[0049] In order to improve the stability and stress effect of structure; as Figure 3 The first pawl arm 3 is provided with a second arc piece 9 through a connecting piece, and the second arc piece 9 is in a circular arc structure matched with the pin shaft seat.

[0050] In order to facilitate installation; as Figure 3 、 Figure 4 The connecting piece comprises:

[0051] The sliding sleeve 14 is slidably connected to the outer wall of the first pawl arm 3, and the second arc piece 9 is integrally arranged on the outer wall of the sliding sleeve 14;

[0052] The fixed knob 15 is threadedly connected to the inner wall of the sliding sleeve 14, and the fixed knob 15 is used for fixing the sliding sleeve 14 on the first pawl arm 3;

[0053] By setting the sliding sleeve 14, the second arc piece 9 and other structures, the pawl round hole 13 can be installed on the pin shaft 2, the position of the sliding sleeve 14 is adjusted, the second arc piece 9 is matched with the pin shaft seat, and the fixed knob 15 is fixed, thereby further improving the stability and stress effect of the structure.

[0054] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A parking mechanism for an electromechanical brake, characterized by, The utility model relates to a kind of motorized ratchet mechanism, including: Mounting bracket (1), opening is provided on the mounting bracket (1), motor shaft (7) passes through the opening, and motor shaft (7) is connected with ratchet (6) after penetrating the opening; Pin shaft seat, pin shaft (2) is installed on pin shaft seat, ratchet pawl is rotatably installed on pin shaft (2); Bistable solenoid valve (5), bistable solenoid valve (5) is installed in mounting bracket (1), and the output end (4) of bistable solenoid valve (5) is drivingly connected with ratchet pawl; The ratchet pawl includes: Center part, center part is cylindrical, and ratchet pawl round hole (13) is arranged in the center of center part, and ratchet pawl is installed on pin shaft (2) by ratchet pawl round hole (13); First ratchet pawl arm (3), first ratchet pawl arm (3) is arranged on the outer wall of one side of center part, and first ratchet pawl arm (3) is drivingly connected with the output end (4) of bistable solenoid valve (5); Second ratchet pawl arm (10), second ratchet pawl arm (10) is arranged on the outer wall of the other side of center part, and the end wall of second ratchet pawl arm (10) is provided with clamping portion (11), and clamping portion (11) is matched with ratchet (6); First arc piece (12), first arc piece (12) is arranged on the outer wall of one side of second ratchet pawl arm (10), and first arc piece (12) is arc-shaped structure matched with pin shaft seat;When ratchet pawl is installed on pin shaft (2), first arc piece (12) slides on the outer wall of pin shaft seat.

2. A parking mechanism for an electromechanical brake according to claim 1, characterized in that It further includes a controller, the mounting bracket (1) and the adjacent side of the controller are provided with a matched tuning fork PIN, the mounting bracket (1) is detachably mounted on the controller by bolts, and when the mounting bracket (1) is mounted on the controller, electrical connection is realized based on the tuning fork PIN.

3. A parking mechanism for an electromechanical brake according to claim 2, wherein The clamping portion (11) includes a plurality of sliding tooth blocks (8), the sliding tooth blocks (8) are floatingly installed on the end wall of the second ratchet pawl arm (10) by springs;The adjacent sliding tooth blocks (8) are compactly arranged, and one side of the sliding tooth blocks (8) is slidingly connected with the end inner wall of the second ratchet pawl arm (10) through a side groove.

4. A parking mechanism for an electromechanical brake according to claim 3, wherein The sliding tooth blocks (8) cooperatively form a triangular structure.

5. A parking mechanism for an electromechanical brake according to claim 1, wherein The first ratchet pawl arm (3) is provided with a second arc piece (9) through a connecting piece, and the second arc piece (9) is arc-shaped structure matched with the pin shaft seat.

6. A parking mechanism for an electromechanical brake according to claim 5, wherein The connecting piece includes: Slip bushing (14), one side of the slip bushing (14) is matched with the shape of the center part, the slip bushing (14) is slidingly connected with the outer wall of the first ratchet pawl arm (3), and the second arc piece (9) is integrally arranged on one side of the outer wall of the slip bushing (14); Fixed knob (15), the fixed knob (15) is connected with the inner wall of the slip bushing (14) by threads, and the fixed knob (15) is used to fix the slip bushing (14) on the first ratchet pawl arm (3).

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