Test tool for clutch booster

Abstract

The utility model discloses a test tool for a clutch booster. The test tool comprises a base, a guide rail, a sliding block, a vertical plate and a force sensor, a vertical plate is fixedly mounted on the base, a reset device is arranged on the vertical plate, a mounting plate is fixedly mounted on the base, an electric cylinder and a pair of auxiliary air cylinders are fixedly mounted on the mounting plate, the electric cylinder can push the sliding block to slide, and the auxiliary air cylinders can assist the electric cylinder in pushing, so that the sliding block can slide more stably; through the arrangement of the electric cylinder, the top plate and the pair of sliding blocks can be pushed to slide stably, through the arrangement of the pair of auxiliary air cylinders, the top plate can be always kept in a balanced state, external force interference is reduced, stable sliding of the sliding blocks is ensured, shaking and deviation of the sliding blocks are reduced, and therefore it is ensured that test data are more accurate; through the arrangement of the reset assembly, the communication assembly and the oil supply assembly, the top plate guide column can be lubricated, friction jamming is reduced, it is ensured that the top plate is kept in a stable state, and therefore it is ensured that test data are more accurate.

Description

Technical Field

[0001] This utility model relates to the field of power assist testing technology, and in particular to a testing fixture for a clutch power assist. Background Technology

[0002] A brake booster is a component that uses vacuum or negative pressure to increase the force applied to the pedal by the driver. It is an important component of the vehicle braking system and a key actuator in the automotive hydraulic servo braking system. Its main function is to amplify the pedal force applied by the driver during braking by a certain proportion, making the vehicle braking control easier and more reliable. It can effectively reduce the intensity of the force applied by the driver during braking. Before a vacuum booster is put into use, the input-output force characteristic curve of the vacuum booster needs to be tested in order to intuitively reflect the performance parameters of the vacuum booster.

[0003] For example, the Chinese utility model patent CN220063408U discloses a vacuum booster performance testing device. This device uses the smooth pushing of a slider to ensure accurate measurement of the preload force of the push rod by a force sensor. Simultaneously, the input stroke can be precisely controlled through the cooperation of a drive motor and a lead screw, thereby improving the accuracy of the measurement data. However, this structure still has the following significant drawbacks:

[0004] During long-term use, the lead screw and lead screw nut are prone to wear, which can lead to gaps between them. This can cause the slider to run unevenly and reduce the accuracy of the test. Summary of the Invention

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides a test fixture for a clutch booster, including a base, a guide rail, a slider, a vertical plate, and a force sensor; a reset device is provided on the vertical plate, and an mounting plate is fixedly installed on the base. An electric cylinder and a pair of auxiliary cylinders are fixedly installed on the mounting plate. The electric cylinder can push the slider to slide, and the pair of auxiliary cylinders can assist the electric cylinder in pushing, so that the slider can slide more stably.

[0007] Furthermore, a top plate is fixedly installed on the top of the slider, and the electric cylinder and a pair of auxiliary cylinders are fixedly installed on one end of the mounting plate opposite to the vertical plate. The output shaft of the electric cylinder abuts against the center of the top plate opposite to the vertical plate, and the output shafts of the pair of auxiliary cylinders abut against both sides of the top plate opposite to the vertical plate; wherein, the pair of auxiliary cylinders are symmetrical about the electric cylinder.

[0008] Furthermore, the reset device includes a pair of top plate guide posts and a pair of springs. The top plate is provided with a pair of sliding holes. The pair of top plate guide posts are fixedly installed on the vertical plate and slidably installed in the corresponding sliding holes.

[0009] Each of the top plate guide columns is fitted with a spring, one end of each spring abuts against the vertical plate, and the other end of each spring abuts against the top plate.

[0010] Furthermore, the top plate is provided with an oil storage tank and an oil filling port. The oil storage tank is connected to the oil filling port through an oil inlet channel. The oil storage tank is connected to a pair of sliding holes through an oil outlet channel. A connecting component is provided in the oil outlet channel. When the connecting component is in the open state, the lubricating oil stored in the oil storage tank can be pushed into the pair of sliding holes through the oil supply component. The oil supply component can be reset by a reset component.

[0011] Furthermore, the connecting component includes a rotating motor and a cylindrical rotating block with a connecting oil groove. A cylindrical groove is provided at the oil outlet channel. The cylindrical rotating block is rotatably installed in the cylindrical groove. The rotating motor is fixedly installed on the top plate. The output shaft of the rotating motor is fixedly connected to the center of the cylindrical rotating block.

[0012] Furthermore, the oil supply assembly includes a pressing spring, an oil supply block, and a connecting column. A sliding groove communicating with the oil storage tank is provided on the top plate. One end of the connecting column is slidably installed in the sliding groove, and the other end is fixedly connected to the oil supply block. The oil supply block is slidably installed in the oil storage tank.

[0013] A pressing spring is fitted on the connecting column, with one end of the pressing spring pressing against the oil storage tank and the other end pressing against the oil supply block.

[0014] Furthermore, the reset assembly includes a magnetic block, a pressing block, and a reset spring. A reset groove is provided on the top plate, and the magnetic block is slidably installed in the reset groove. The pressing block is fixedly connected to the top of the magnetic block, and the pressing block extends out of the top plate through a connecting groove. One end of the reset spring presses against the bottom end of the magnetic block, and the other end presses against the reset groove.

[0015] The magnetic block can attract the oil supply block to slide upwards.

[0016] Furthermore, a silicone layer is provided on the side of the oil supply block.

[0017] Furthermore, the top plate is made of stainless steel, and the oil supply block is made of iron.

[0018] Furthermore, an observation window is provided on the top plate, which is used to determine whether the oil reservoir needs to be refilled with lubricating oil. The beneficial effects of this utility model are as follows: 1. The electric cylinder enables the top plate and a pair of sliders to slide smoothly. The auxiliary cylinders ensure the top plate remains in a balanced state, reducing external interference during movement and allowing the sliders to slide more stably throughout the entire operation, reducing wobbling and deviation, thereby ensuring more accurate test data.

[0019] 2. By setting up the reset component, the connecting component and the oil supply component, the top plate guide post can be lubricated, which can reduce the jamming caused by friction and ensure that the top plate remains stable during movement, thereby ensuring more accurate test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a test fixture for a clutch booster according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a test fixture for a clutch booster according to an embodiment of this application; Figure 3 for Figure 1 A magnified structural diagram at point A; Figure 4 for Figure 2 A schematic cross-sectional view of the top plate along the BB direction; Figure 5 for Figure 4 A magnified structural diagram at point C; Figure 6 for Figure 4 A magnified structural diagram at point D.

[0021] Figure Labels

[0022] 1-Base, 2-Guide rail, 3-Slider, 4-Vertical plate, 41-Reset device, 411-Top plate guide post, 412-Spring, 5-Force sensor, 7-Mounting plate, 8-Electric cylinder, 9-Auxiliary cylinder, 10-Top plate, 101-Sliding hole, 111-Oil reservoir, 112-Oil filler port, 113-Oil inlet channel, 114-Oil outlet channel, 115-Reset assembly, 116-Connecting assembly, 117-Oil supply assembly, 121-Rotating motor, 122-Cylindrical rotating block, 123-Cylindrical groove, 124-Connecting oil groove, 131-Pressing spring, 132-Oil supply block, 133-Connecting post, 134-Sliding groove, 135-Silicone layer, 141-Magnetic block, 142-Pressing block, 143-Reset groove, 144-Connecting groove, 145-Reset spring, 15-Observation window. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] The following description, in conjunction with the accompanying drawings, details a test fixture for a clutch booster provided in this application through specific embodiments and application scenarios.

[0026] Example 1:

[0027] like Figures 1 to 3 As shown, this application embodiment provides a test fixture for a clutch booster, including a base 1, a guide rail 2, a slider 3, a vertical plate 4, and a force sensor 5; a reset device 41 is provided on the vertical plate 4, and an mounting plate 7 is fixedly installed on the base 1. An electric cylinder 8 and a pair of auxiliary cylinders 9 are fixedly installed on the mounting plate 7. The electric cylinder 8 can push the slider 3 to slide, and the pair of auxiliary cylinders 9 can assist the electric cylinder 8 in pushing, so that the slider 3 can slide more stably.

[0028] Furthermore, a top plate 10 is fixedly installed on the top of the slider 3, and the electric cylinder 8 and a pair of auxiliary cylinders 9 are fixedly installed on the end of the mounting plate 7 facing away from the vertical plate 4. The output shaft of the electric cylinder 8 presses against the center of the end of the top plate 10 facing away from the vertical plate 4, and the output shafts of the pair of auxiliary cylinders 9 press against the two sides of the end of the top plate 10 facing away from the vertical plate 4, respectively; wherein, the pair of auxiliary cylinders 9 are symmetrical about the electric cylinder 8.

[0029] Furthermore, the reset device 41 includes a pair of top plate guide posts 411 and a pair of springs 412. The top plate 10 is provided with a pair of sliding holes 101. The pair of top plate guide posts 411 are fixedly installed on the vertical plate 4 and are slidably installed in the corresponding sliding holes 101. Each of the pair of top plate guide posts 411 is fitted with a spring 412. One end of each pair of springs 412 abuts against the vertical plate 4, and the other end abuts against the top plate 10.

[0030] In this embodiment of the application, due to the aforementioned structure, a pair of parallel guide rails 2 and a vertical plate 4 are provided on the base 1. Slider 3 is slidably mounted on each of the guide rails 2. The top plate 10 is fixedly mounted on the top of the pair of sliders 3. A force sensor 5 is fixedly mounted on the end of the top plate 10 facing the vertical plate 4. During testing, the booster is first installed on the end of the vertical plate 4 facing away from the top plate 10, with the push rod on the booster passing through a hole in the vertical plate 4. Then, by activating the electric cylinder 8, the output shaft of the electric cylinder 8 pushes the top plate 10 and the pair of sliders 3 to slide smoothly, causing the force sensor to... 5. Push the push rod of the booster and record the data. At the same time as starting the electric cylinder 8, a pair of auxiliary cylinders 9 are started. The output shaft stroke of the pair of auxiliary cylinders 9 is the same as that of the electric cylinder 8. The output shaft of the pair of auxiliary cylinders 9 will push the two sides of the top plate 10 opposite to the vertical plate 4, providing an additional thrust. This can keep the top plate 10 in a balanced state at all times, reduce the various external forces that interfere with it during the movement, and make the slider 3 slide more stably throughout the operation, reducing its shaking and deviation, thereby ensuring more accurate test data.

[0031] Example 2:

[0032] like Figures 3 to 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the top plate 10 is provided with an oil storage tank 1111 and an oil filling port 112. The oil storage tank 1111 is connected to the oil filling port 112 through an oil inlet channel 113. The oil storage tank 1111 is connected to a pair of sliding holes 101 through an oil outlet channel 114. A connecting component 116 is provided in the oil outlet channel 114. When the connecting component 116 is in the open state, the lubricating oil stored in the oil storage tank 1111 can be pushed into the pair of sliding holes 101 through the oil supply component 117. The oil supply component 117 can be reset by the reset component 115.

[0033] Furthermore, the connecting component 116 includes a rotating motor 121 and a cylindrical rotating block 122 provided with a connecting oil groove 124. A cylindrical groove 123 is provided at the oil outlet channel 114. The cylindrical rotating block 122 is rotatably installed in the cylindrical groove 123. The rotating motor 121 is fixedly installed on the top plate 10. The output shaft of the rotating motor 121 is fixedly connected to the center of the cylindrical rotating block 122.

[0034] Furthermore, the oil supply assembly 117 includes a pressing spring 131, an oil supply block 132, and a connecting column 133. The top plate 10 is provided with a sliding groove 134 that communicates with the oil storage tank 1111. One end of the connecting column 133 is slidably installed in the sliding groove 134, and the other end is fixedly connected to the oil supply block 132. The oil supply block 132 is slidably installed in the oil storage tank 111. The connecting column 133 is fitted with a pressing spring 131. One end of the pressing spring 131 abuts against the oil storage tank 1111, and the other end abuts against the oil supply block 132.

[0035] Furthermore, the reset assembly 115 includes a magnetic block 141, a pressing block 142, and a reset spring 145. A reset groove 143 is provided on the top plate 10. The magnetic block 141 is slidably installed in the reset groove 143. The pressing block 142 is fixedly connected to the top of the magnetic block 141. The pressing block 142 extends out of the top plate 10 through a connecting groove 144. One end of the reset spring 145 presses against the bottom end of the magnetic block 141, and the other end presses against the reset groove 143. The magnetic block 141 can attract the oil supply block 132 to slide upward.

[0036] Furthermore, a silicone layer 135 is provided on the side of the oil supply block 132.

[0037] Furthermore, the top plate 10 is made of stainless steel, and the oil supply block 132 is made of iron.

[0038] Furthermore, the top plate 10 is provided with an observation window 15, which is used to determine whether the oil storage tank 111 needs to be refilled with lubricating oil.

[0039] In this embodiment of the application, due to the above-described structure, when the electric cylinder 8 is started, a pair of rotating motors 121 are started, driving the corresponding cylindrical rotating blocks 122 to rotate, so that the oil storage tank 1111 and a pair of sliding holes 101 are temporarily connected through the connecting oil tank 124. At this time, under the action of the pressing spring 131, the oil supply block 132 will drive the connecting column 133 to slide downward together, and push the lubricating oil in the oil storage tank 1111, so that the lubricating oil comes to the pair of sliding holes 101 through the oil outlet channel 114, and lubricates the pair of top plate guide columns 411. This can reduce the jamming caused by friction, ensure that the top plate 10 remains stable during the movement, and thus ensure that the test data is more accurate.

[0040] When the test ends, the output shafts of the electric cylinder 8 and a pair of auxiliary cylinders 91 are reset, the top plate 10 is reset under the force of the spring 412, a pair of rotating motors 121 are started, driving the corresponding cylindrical rotating blocks 122 to rotate, so that the lubricating oil in the oil reservoir 1111 cannot reach the pair of sliding holes 101 through the connecting oil groove 124.

[0041] The observation window 15 allows operators to easily observe the lubricating oil level in the oil reservoir 1111. When lubricating oil needs to be added again, pressing the pressing block 142 will push the magnetic block 141 downwards and compress the return spring 145. Since the oil supply block 132 is made of iron, the magnetic block 141 will generate an attractive force on the oil supply block 132, causing it to slide upwards. The bottom of the oil supply block 132 is higher than the connection between the oil inlet channel 113 and the oil reservoir 1111. Spring 131, then add lubricating oil by opening the oil filling port 112. When the lubricating oil level is 1cm below the connection between the oil inlet channel 113 and the oil reservoir 1111, stop adding oil and close the oil filling port 112. Then release the pressing block 142. Under the action of the reset spring 145, the pressing block 142 and the magnetic block 141 are reset. At this time, the magnetic block 141 has too little attraction to the oil supply block 132. Under the action of the pressing spring 131, the bottom end of the oil supply block 132 is pressed against the lubricating oil surface again.

[0042] A silicone layer 135 is provided on the side of the oil supply block 132, which can prevent lubricating oil from flowing out during the extrusion process;

[0043] The top plate 10 is made of stainless steel, a hard and non-magnetic metal alloy, so that the top plate 10 will not interfere with the sliding of the magnet 141.

[0044] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A testing fixture for a clutch booster, comprising a base (1), a guide rail (2), a slider (3), a vertical plate (4), and a force sensor (5), characterized in that, A reset device (41) is provided on the vertical plate (4), and an mounting plate (7) is fixedly installed on the base (1). An electric cylinder (8) and a pair of auxiliary cylinders (9) are fixedly installed on the mounting plate (7). The electric cylinder (8) can push the slider (3) to slide, and the pair of auxiliary cylinders (9) can assist the electric cylinder (8) in pushing, so that the slider (3) can slide more stably. A top plate (10) is fixedly installed on the top of the slider (3). The electric cylinder (8) and a pair of auxiliary cylinders (9) are fixedly installed on the mounting plate (7) at one end away from the vertical plate (4). The output shaft of the electric cylinder (8) presses against the center of the top plate (10) at the end away from the vertical plate (4). The output shafts of the pair of auxiliary cylinders (9) press against the two sides of the top plate (10) at the end away from the vertical plate (4). The pair of auxiliary cylinders (9) are symmetrical about the electric cylinder (8).

2. The testing fixture for a clutch booster according to claim 1, characterized in that, The reset device (41) includes a pair of top plate guide posts (411) and a pair of springs (412). The top plate (10) is provided with a pair of sliding holes (101). The pair of top plate guide posts (411) are fixedly installed on the vertical plate (4) and are slidably installed in the corresponding sliding holes (101). Among them, a spring (412) is fitted on each of the pair of top plate guide columns (411). One end of each pair of springs (412) presses against the vertical plate (4), and the other end presses against the top plate (10).

3. The testing fixture for a clutch booster according to claim 2, characterized in that, The top plate (10) is provided with an oil storage tank (111) and an oil filling port (112). The oil storage tank (111) is connected to the oil filling port (112) through an oil inlet channel (113). The oil storage tank (111) is connected to a pair of sliding holes (101) through an oil outlet channel (114). A connecting component (116) is provided in the oil outlet channel (114). When the connecting component (116) is in the open state, the lubricating oil stored in the oil storage tank (111) can be pushed into the pair of sliding holes (101) through the oil supply component (117). The oil supply component (117) can be reset by the reset component (115).

4. The testing fixture for a clutch booster according to claim 3, characterized in that, The connecting component (116) includes a rotating motor (121) and a cylindrical rotating block (122) with a connecting oil groove (124). A cylindrical groove (123) is provided at the oil outlet channel (114). The cylindrical rotating block (122) is rotatably installed in the cylindrical groove (123). The rotating motor (121) is fixedly installed on the top plate (10). The output shaft of the rotating motor (121) is fixedly connected to the center of the cylindrical rotating block (122).

5. The testing fixture for a clutch booster according to claim 3, characterized in that, The oil supply assembly (117) includes a pressing spring (131), an oil supply block (132), and a connecting column (133). The top plate (10) is provided with a sliding groove (134) that communicates with the oil storage tank (111). One end of the connecting column (133) is slidably installed in the sliding groove (134), and the other end is fixedly connected to the oil supply block (132). The oil supply block (132) is slidably installed in the oil storage tank (111). The connecting column (133) is fitted with a pressing spring (131), one end of which presses against the oil storage tank (111), and the other end presses against the oil supply block (132).

6. The testing fixture for a clutch booster according to claim 5, characterized in that, The reset assembly (115) includes a magnetic block (141), a pressing block (142), and a reset spring (145). A reset groove (143) is provided on the top plate (10). The magnetic block (141) is slidably installed in the reset groove (143). The pressing block (142) is fixedly connected to the top of the magnetic block (141). The pressing block (142) extends out of the top plate (10) through the connecting groove (144). One end of the reset spring (145) presses against the bottom end of the magnetic block (141), and the other end presses against the reset groove (143). The magnetic block (141) can attract the oil supply block (132) to slide upward.

7. The testing fixture for a clutch booster according to claim 5, characterized in that, The side of the oil supply block (132) is provided with a silicone layer (135).

8. The testing fixture for a clutch booster according to claim 6, characterized in that, The top plate (10) is made of stainless steel, and the oil supply block (132) is made of iron.

9. The testing fixture for a clutch booster according to claim 3, characterized in that, An observation window (15) is provided on the top plate (10), and the observation window (15) is used to determine whether the oil storage tank (111) needs to be refilled with lubricating oil.

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