CN219319366U - Device for calibrating a displacement sensor in an electronic power brake - Google Patents
Device for calibrating a displacement sensor in an electronic power brake Download PDFInfo
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- CN219319366U CN219319366U CN202320395497.6U CN202320395497U CN219319366U CN 219319366 U CN219319366 U CN 219319366U CN 202320395497 U CN202320395497 U CN 202320395497U CN 219319366 U CN219319366 U CN 219319366U
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- displacement sensor
- connecting block
- calibrating
- push rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model belongs to the technical field of calibration of displacement sensors, and discloses a device for calibrating a displacement sensor in an electronic power-assisted brake. Zero-finding operation can be completed rapidly, so that calibration of the displacement sensor is performed rapidly, time consumption is short, efficiency is high, and testing cost of the electronic power-assisted brake is reduced.
Description
Technical Field
The utility model relates to the technical field of calibration of displacement sensors, in particular to a device for calibrating a displacement sensor in an electronic power-assisted brake.
Background
With the continuous improvement of the electric and intelligent degrees of automobiles, new solutions of braking systems are continuously emerging. The electronic booster brake replaces a vacuum booster in a traditional braking system, is widely applied, and can be seen in a new vehicle model of a traditional main engine factory or a new vehicle model of a traditional main engine factory.
The input push rod in the electronic power-assisted brake is connected with the brake pedal, when a driver presses the brake pedal, the input push rod generates displacement under the action of the connecting rod, the displacement sensor of the electronic power-assisted brake detects a signal generated by the displacement of the input push rod and sends the signal to the motor controller, the motor controller calculates the torque which is required to be generated by the motor and sends the signal to the motor, the motor converts the torque into a servo braking force through the transmission device after receiving the signal, and the servo braking force is jointly converted into brake wheel cylinder hydraulic pressure in the brake master cylinder to realize braking under the action of the push rod force generated by the driver pressing the brake pedal. Therefore, the accuracy of the displacement sensor is very important, and the displacement sensor in the electronic power-assisted brake needs to be calibrated before delivery.
In the prior art, the calibration device of the displacement sensor comprises an electric cylinder, a clamping tool and a force sensor, wherein the output end of the electric cylinder is fixedly connected with the clamping tool, the clamping tool can clamp one end of an input push rod of the electronic power-assisted brake, and the force sensor is used for detecting the tensile force born by the input push rod. When the change position operation in the calibration process is carried out, the electric cylinder drives the input push rod to advance to compress the return spring, and then drives the input push rod to retreat until the force sensor detects that the tensile force applied to the input push rod reaches the set tensile force, and the position is recorded as a zero position. However, the calibration mode of the calibration device adopting the displacement sensor is long in time consumption and low in efficiency, and the production cost of enterprises is increased intangibly.
Disclosure of Invention
The utility model aims to provide a device for calibrating a displacement sensor in an electronic power-assisted brake, so as to solve the problems that the calibration mode of the calibration device for the displacement sensor in the prior art is long in time consumption and low in efficiency, and the production cost of enterprises is increased intangibly.
To achieve the purpose, the utility model adopts the following technical scheme:
the device for calibrating the displacement sensor in the electronic power-assisted brake comprises a shell, an input push rod, a return spring and a displacement sensor, wherein the input push rod is arranged on the shell in an axial sliding manner, the input push rod is provided with a first end and a second end, the first end can be connected with a pedal, the displacement sensor can detect the displacement of the second end, and the return spring can drive the input push rod to move towards the direction where the first end is positioned;
the device for calibrating a displacement sensor in an electronic power-assisted brake comprises:
an input pushrod connection structure connectable to or separable from the first end of the input pushrod;
the first connecting block is fixedly connected with the input push rod connecting structure;
the output end of the first driving piece is fixedly connected with the second connecting block;
the connecting rod, the one end of connecting rod with first connecting block fixed connection, the connecting rod slides and wears to locate the second connecting block.
As a preferable mode of the device for calibrating the displacement sensor in the electric power-assisted brake, the device for calibrating the displacement sensor in the electric power-assisted brake further comprises a nut, the nut is in threaded connection with the connecting rod, the second connecting block is located between the nut and the first connecting block, and when the second connecting block is in abutting connection with the nut, the first connecting block and the second connecting block are arranged at intervals.
As a preferred embodiment of the above device for calibrating a displacement sensor in an electric power brake, the first driving member is an electric cylinder.
As a preferred scheme of the device for calibrating the displacement sensor in the electronic power-assisted brake, the input push rod connecting structure comprises a connecting frame, a second driving piece and a connecting pin, wherein the connecting frame is fixedly connected with the first connecting block, the second driving piece is fixedly arranged on the connecting frame, the connecting pin is fixedly arranged at the output end of the second driving piece, the first end of the input push rod is provided with a connecting hole, and the second driving piece can drive the connecting pin to penetrate through the connecting hole.
As a preferred embodiment of the above device for calibrating a displacement sensor in an electric power brake, the second driving member is an electric cylinder.
As a preferable mode of the device for calibrating the displacement sensor in the electronic power-assisted brake, the device for calibrating the displacement sensor in the electronic power-assisted brake further comprises a force sensor, wherein the force sensor is fixedly arranged on the second connecting block, and the force sensor can detect the force born by the connecting rod.
As a preferable scheme of the device for calibrating the displacement sensor in the electronic power-assisted brake, one end of the connecting rod is provided with the connecting disc, one surface of the first connecting block, which is far away from the second connecting block, is provided with the groove, the first connecting block is provided with the through hole communicated with the groove, the connecting disc is embedded in the groove, and the connecting rod penetrates through the through hole.
As a preferred scheme of the device for calibrating the displacement sensor in the electronic power-assisted brake, the device for calibrating the displacement sensor in the electronic power-assisted brake further comprises a plurality of bolts, a plurality of first threaded holes are formed in the connecting disc at intervals, a plurality of second threaded holes are formed in the bottom wall of the groove at intervals, the bolts, the first threaded holes and the second threaded holes are arranged in a one-to-one correspondence mode, one part of the bolts are in threaded connection with the first threaded holes, and the other part of the bolts are in threaded connection with the second threaded holes.
As a preferable scheme of the device for calibrating the displacement sensor in the electronic power-assisted brake, the device for calibrating the displacement sensor in the electronic power-assisted brake further comprises a supporting table, the first driving piece is fixedly arranged on the supporting table, and the first connecting block and the input push rod connecting structure are slidably arranged on the supporting table.
As an optimized scheme of the device for calibrating the displacement sensor in the electronic power-assisted brake, the supporting table is provided with a sliding rail, the first connecting block and the input push rod connecting structure are both provided with sliding blocks, and the sliding blocks are arranged on the sliding rail in a sliding manner.
The utility model has the beneficial effects that:
the utility model provides a device for calibrating a displacement sensor in an electronic power-assisted brake, which comprises an input push rod connecting structure, a first connecting block, a second connecting block, a first driving piece and a connecting rod, wherein the input push rod connecting structure can be connected with or separated from a first end of an input push rod, the first connecting block is fixedly connected with the input push rod connecting structure, an output end of the first driving piece is fixedly connected with the second connecting block, one end of the connecting rod is fixedly connected with the first connecting block, and the connecting rod is arranged in a sliding penetrating manner on the second connecting block. The direction of compressing the return spring is a first direction, and the direction opposite to the first direction is a second direction. When the operation of changing position in the calibration process, the first driving piece drives the second connecting block to push the first connecting block, the input push rod connecting structure and the input push rod to move towards the first direction, the return spring is compressed, then the first driving piece drives the second connecting block to rapidly move towards the second direction to the set position, the input push rod, the first connecting block and the input push rod connecting structure can move towards the second direction under the action of the return spring until the return spring stretches to the free length, the free length of the return spring is the length of the return spring when the return spring is not compressed, the position detected by the displacement sensor is recorded as the zero position, and the operation of changing position is completed. It will be appreciated that there is a gap between the first connection block and the second connection block in the set position when the return spring is extended to its free length to ensure that the return spring is not compressed. The device for calibrating the displacement sensor in the electronic power-assisted brake can quickly complete zero-finding operation, so that the calibration of the displacement sensor is quickly performed, the time consumption is short, the efficiency is high, and the test cost of the electronic power-assisted brake is reduced.
Drawings
FIG. 1 is a schematic view of a portion of an apparatus for calibrating a displacement sensor in an electric assist brake according to an embodiment of the present utility model;
FIG. 2 is an exploded view of a portion of an apparatus for calibrating a displacement sensor in an electric assist brake, provided in accordance with an embodiment of the present utility model;
fig. 3 is a schematic structural view of an apparatus for calibrating a displacement sensor in an electric power-assisted brake according to an embodiment of the present utility model.
In the figure:
1. a first connection block; 11. a groove;
2. a second connection block;
3. a connecting rod; 31. a connecting disc;
4. a nut;
5. a first driving member;
6. input push rod connection structure.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The electronic power-assisted brake comprises a shell, an input push rod, a return spring and a displacement sensor, wherein the input push rod is arranged on the shell in an axial sliding mode, the input push rod is provided with a first end and a second end, the first end can be connected with a pedal, the displacement sensor can detect the displacement of the second end, and the return spring can drive the input push rod to move towards the direction where the first end is located.
The utility model provides a device for calibrating a displacement sensor in an electronic power-assisted brake, which is shown in figures 1-3, and comprises an input push rod connecting structure 6, a first connecting block 1, a second connecting block 2, a first driving piece 5 and a connecting rod 3, wherein the input push rod connecting structure 6 can be connected with or separated from a first end of an input push rod, the first connecting block 1 is fixedly connected with the input push rod connecting structure 6, an output end of the first driving piece 5 is fixedly connected with the second connecting block 2, one end of the connecting rod 3 is fixedly connected with the first connecting block 1, and the connecting rod 3 is arranged in a sliding penetrating manner on the second connecting block 2.
In this embodiment, the direction of the compression return spring is a first direction, and the direction opposite to the first direction is a second direction. The return spring can drive the input push rod to move towards the second direction.
According to the device for calibrating the displacement sensor in the electronic power-assisted brake, one end of the connecting rod 3 is fixedly connected with the first connecting block 1, the connecting rod 3 is slidably arranged through the second connecting block 2, the first driving piece 5 pushes the input push rod connecting structure 6 to a position capable of being connected with the input push rod through the second connecting block 2 and the first connecting block 1, the input push rod connecting structure 6 is connected with the input push rod, calibration is started, when the position of the electronic power-assisted brake is found in the calibration process, the first driving piece 5 drives the second connecting block 1, the input push rod connecting structure 6 and the input push rod to move in the first direction, the return spring is compressed, then the first driving piece 5 drives the second connecting block 2 to move to the set position in the second direction quickly, the input push rod, the first connecting block 1 and the input push rod connecting structure 6 can move to the second direction under the action of the return spring until the return spring stretches to the free length of the return spring, the free length of the return spring is the length of the return spring when the return spring is not compressed, the position detected by the displacement sensor is recorded as a zero position, and the position of the electronic power-assisted brake is found in the zero position, and the position operation is completed. It will be appreciated that when the return spring is extended to its free length, there is a gap between the first connection block 1 and the second connection block 2 in the set position to ensure that the return spring is not compressed. The device for calibrating the displacement sensor in the electronic power-assisted brake can quickly complete zero-finding operation, so that the calibration of the displacement sensor is quickly performed, the time consumption is short, the efficiency is high, and the test cost of the electronic power-assisted brake is reduced.
After the operation of changing position, the calibration is continued, the first driving piece 5 drives the second connecting block 2 to move a certain distance in the first direction and then to be in butt joint with the first connecting block 1, the second connecting block 2 can push the first connecting block 1, the input push rod connecting structure 6 and the input push rod to move in the first direction, the input push rod can calibrate a point when moving a set distance, the first driving piece 5 drives the second connecting block 2 to move in the second direction until the calibrated point reaches a set point, and the set position records a point when moving. The recorded points are used to test whether the calibrated points are accurate. It will be appreciated that the CH1 duty cycle, CH2 duty cycle, linearity, and synchronization of the calibration point and the recording point.
Optionally, as shown in fig. 3, the device for calibrating the displacement sensor in the electronic power-assisted brake further includes a nut 4, the nut 4 is in threaded connection with the connecting rod 3, the second connecting block 2 is located between the nut 4 and the first connecting block 1, and when the second connecting block 2 abuts against the nut 4, the first connecting block 1 and the second connecting block 2 are arranged at intervals. After the calibration operation is completed, the first driving piece 5 is required to drive the first connecting block 1, the second connecting block 2 and the input push rod connecting structure 6 to move towards the second direction, so that the input push rod connecting structure 6 is separated from the input push rod. The first driving piece 5 drives the second connecting block 2 to move towards the second direction, the second connecting block 2 is abutted with the nut 4 and then continues to move towards the second direction, and the connecting rod 3 can drive the first connecting block 1 to move towards the second direction, so that the input push rod connecting structure 6 is driven to move towards the second direction.
Alternatively, the first driving member 5 is an electric cylinder.
Optionally, the input push rod connection structure 6 includes link, second driving piece and connecting pin, and link and 1 fixed connection of first linkage block, second driving piece are fixed to be set up in the link, and the connecting pin is fixed to be set up in the output of second driving piece, and the first end of input push rod has the connecting hole, and the connecting pin is worn to locate by the second driving piece to the connecting hole. The second driving piece drives the connecting pin to pass through the connecting hole, so that the input push rod connecting structure 6 can be connected with the input push rod; the second driving member drives the connecting pin to be pulled out of the connecting hole, and the input push rod connecting structure 6 can be separated from the input push rod.
Optionally, the second driving member is an electric cylinder.
Optionally, the device for calibrating the displacement sensor in the electric power-assisted brake further comprises a force sensor fixedly arranged on the second connecting block 2, the force sensor being able to detect the force exerted by the connecting rod 3. The force sensor detects the force born by the connecting rod 3 in real time so as to prevent the excessive displacement of the first driving piece 5 for driving the second connecting block 2 to move so as to lead the return spring to be excessively compressed and damage parts in the electronic power-assisted brake.
Optionally, connecting rod 3 one end is equipped with connection pad 31, and the one side that second connecting block 2 was kept away from to first connecting block 1 is equipped with recess 11, and first connecting block 1 is provided with the through-hole with recess 11 intercommunication, and connection pad 31 inlays locates recess 11, and connecting rod 3 wears to locate the through-hole. The connecting rod 3 and the first connecting block 1 can be positioned firstly when the first connecting block 1 and the connecting rod 3 are installed.
Optionally, the device for calibrating the displacement sensor in the electronic power-assisted brake further includes a plurality of bolts, the connecting disc 31 is provided with a plurality of first threaded holes at intervals, the bottom wall of the groove 11 is provided with a plurality of second threaded holes at intervals, the plurality of bolts, the plurality of first threaded holes and the plurality of second threaded holes are arranged in a one-to-one correspondence, one part of the bolts is in threaded connection with the first threaded holes, and the other part of the bolts is in threaded connection with the second threaded holes. When connecting the connecting rod 3 with the first connecting block 1, the connecting rod 3 is firstly penetrated into the through hole, the connecting disc 31 is embedded into the groove 11, and then the connecting rod 3 and the first connecting block 1 are fixedly connected by bolts.
Optionally, the device for calibrating the displacement sensor in the electric power brake further comprises a support table, the first driving member 5 is fixedly arranged on the support table, and the first connecting block 1 and the input push rod connecting structure 6 are slidably arranged on the support table. Optionally, the support table is provided with a fixing frame for fixing the housing of the electric power brake.
Optionally, the supporting table is provided with a sliding rail, and the first connecting block 1 and the input push rod connecting structure 6 are both provided with sliding blocks, and the sliding blocks are slidably arranged on the sliding rail. The slide rail can guide the sliding of the first connecting block 1, the second connecting block 2 and the input push rod connecting structure 6.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The device for calibrating the displacement sensor in the electronic power-assisted brake comprises a shell, an input push rod, a return spring and a displacement sensor, wherein the input push rod is arranged on the shell in an axial sliding manner, the input push rod is provided with a first end and a second end, the first end can be connected with a pedal, the displacement sensor can detect the displacement of the second end, and the return spring can drive the input push rod to move towards the direction where the first end is positioned; the device for calibrating a displacement sensor in an electronic power-assisted brake is characterized by comprising:
an input pushrod connection structure (6), the input pushrod connection structure (6) being connectable to or disconnectable from the first end of the input pushrod;
the first connecting block (1), the said first connecting block (1) is fixedly connected with said input push rod connection structure (6);
the device comprises a second connecting block (2) and a first driving piece (5), wherein the output end of the first driving piece (5) is fixedly connected with the second connecting block (2);
the connecting rod (3), the one end of connecting rod (3) with first connecting block (1) fixed connection, connecting rod (3) slip wears to locate second connecting block (2).
2. Device for calibrating a displacement sensor in an electric power brake according to claim 1, characterized in that it further comprises a nut (4), said nut (4) being screwed with said connecting rod (3), said second connecting block (2) being located between said nut (4) and said first connecting block (1), said first connecting block (1) being spaced from said second connecting block (2) when said second connecting block (2) is in abutment with said nut (4).
3. Device for calibrating a displacement sensor in an electric power brake according to claim 1, characterized in that the first driving member (5) is an electric cylinder.
4. The device for calibrating a displacement sensor in an electronic power-assisted brake according to claim 1, characterized in that the input push rod connecting structure (6) comprises a connecting frame, a second driving member and a connecting pin, wherein the connecting frame is fixedly connected with the first connecting block (1), the second driving member is fixedly arranged on the connecting frame, the connecting pin is fixedly arranged at the output end of the second driving member, the first end of the input push rod is provided with a connecting hole, and the second driving member can drive the connecting pin to penetrate through the connecting hole.
5. The device for calibrating a displacement sensor in an electric power-assisted brake of claim 4, wherein the second driving member is an electric cylinder.
6. Device for calibrating a displacement sensor in an electric power brake according to claim 1, characterized in that it further comprises a force sensor fixedly arranged to the second connection block (2), which force sensor is able to detect the force to which the connection rod (3) is subjected.
7. Device for calibrating a displacement sensor in an electronic power-assisted brake according to claim 1, characterized in that one end of the connecting rod (3) is provided with a connecting disc (31), one face of the first connecting block (1) away from the second connecting block (2) is provided with a groove (11), the first connecting block (1) is provided with a through hole communicated with the groove (11), the connecting disc (31) is embedded in the groove (11), and the connecting rod (3) is arranged in the through hole in a penetrating way.
8. The device for calibrating a displacement sensor in an electric power-assisted brake according to claim 7, further comprising a plurality of bolts, wherein the connecting disc (31) is provided with a plurality of first threaded holes at intervals, the bottom wall of the groove (11) is provided with a plurality of second threaded holes at intervals, the plurality of bolts, the plurality of first threaded holes and the plurality of second threaded holes are arranged in one-to-one correspondence, and one part of the bolts is screwed to the first threaded holes, and the other part is screwed to the second threaded holes.
9. Device for calibrating a displacement sensor in an electric power brake according to claim 1, characterized in that the device for calibrating a displacement sensor in an electric power brake further comprises a support table, in which the first driving member (5) is fixedly arranged, in which the first connection block (1) and the input pushrod connection structure (6) are slidingly arranged.
10. Device for calibrating a displacement sensor in an electronic power brake according to claim 9, characterized in that the support table is provided with a sliding rail, the first connection block (1) and the input push rod connection structure (6) are both provided with a slider, which is slidingly arranged in the sliding rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395497.6U CN219319366U (en) | 2023-03-06 | 2023-03-06 | Device for calibrating a displacement sensor in an electronic power brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395497.6U CN219319366U (en) | 2023-03-06 | 2023-03-06 | Device for calibrating a displacement sensor in an electronic power brake |
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| Publication Number | Publication Date |
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| CN219319366U true CN219319366U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320395497.6U Active CN219319366U (en) | 2023-03-06 | 2023-03-06 | Device for calibrating a displacement sensor in an electronic power brake |
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| CN (1) | CN219319366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117190836A (en) * | 2023-10-31 | 2023-12-08 | 万向钱潮股份公司 | Calibration method of travel sensor |
-
2023
- 2023-03-06 CN CN202320395497.6U patent/CN219319366U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117190836A (en) * | 2023-10-31 | 2023-12-08 | 万向钱潮股份公司 | Calibration method of travel sensor |
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