Automatic lubricating grease coating device for master cylinder push rod

Abstract

The utility model relates to an automatic lubricating grease coating device for a main cylinder push rod, and belongs to the field of vacuum booster production machinery. The copper sleeve and the sponge are located in the fixing base, the locking nut is located above the sponge and fixedly connected with the fixing base in a threaded mode, the proximity switch is fixedly connected with the side face of the fixing base, the screw is connected with the bottom of the fixing base in a threaded mode, and the nut is fixedly connected with the screw in a threaded mode. And the round nut is in threaded connection with the fixed seat and fixes the fixed seat on the bracket. The device has the advantages that the structure is novel, the device is used for improving the production takt of lubricating grease, meanwhile, the oiling amount and oiling uniformity can be ensured, waste is avoided, the purpose of reducing friction abnormal sound between the master cylinder push rod and the retainer after assembly is achieved, the oiling position of the master cylinder push rod can be adjusted by adjusting the screwing depth of the screw, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of vacuum booster production machinery, in particular to an automatic grease coating device for a master cylinder push rod. Background Art

[0002] The booster is a component that uses hydraulic pressure, air pressure, vacuum (negative pressure) or electrical energy to increase the force applied by the driver to the pedal. Currently, boosters include air boosters, vacuum boosters, electric boosters, hydraulic boosters, etc.

[0003] The vacuum booster assembly is a key component in the automobile braking system. Its main function is to amplify the servo force through the vacuum booster through the pedal force, acting on the brake master cylinder, causing it to move forward to compress the brake fluid in the master cylinder, and then deliver hydraulic pressure to the entire vehicle's braking system through the brake master cylinder oil outlet, thereby realizing the vehicle's braking function.

[0004] In order to improve market competitiveness, various OEMs have put forward new requirements for improving the quality of various aspects of automobiles, and relevant assessments have gradually been improved into the implementation of automobile standards. In particular, with the emergence of new energy vehicles, due to the absence of engine sound, small noises such as impact and friction during the stepping of the brake pedal in the cab have become obvious, and more and more customers have complained about unusual noises. In order to meet customer requirements, new standards have been formulated. In addition to the normal return impact sound and the sound of gas flow, no other abnormal noises are allowed. Through the inspection and evaluation of the vacuum booster assembly, the assembly manufacturer cooperated with the OEM to formulate various optimization measures, such as adding a rubber layer to the lock plate to reduce the sound of return impact; the master cylinder piston adopts a straight piston type to eliminate the abnormal noise caused by the sliding of the piston and the leather cup; it is currently found that the sound of friction between the master cylinder push rod and the retaining ring needs to be eliminated, such as Figure 2 As shown in the figure, the contact surface 13 between the retaining ring 11 and the master cylinder push rod 12 is the location where the friction noise is generated. For example, by manually applying grease on the contact surface between the master cylinder push rod and the retaining ring, the friction force can be reduced and the friction noise can be eliminated. However, this manual grease application operation method is prone to uneven application, inability to perform quantitative control, long cycle time and other problems. Therefore, it is necessary to develop relevant devices to solve this problem. Summary of the invention

[0005] The utility model provides an automatic grease coating device for a master cylinder push rod, so as to solve the problems of abnormal noise caused by friction between the master cylinder push rod and the retaining ring, uneven coating, inability to perform quantitative control, long cycle time, etc. when the grease is applied manually.

[0006] The technical solution adopted by the utility model is to include a locking nut, a sponge, a bracket, a fixing seat, a copper sleeve, a proximity switch, a screw, a nut, an oil pipe and a round nut, wherein the copper sleeve and the sponge are located in the fixing seat, the locking nut is located above the sponge and is threadedly fixedly connected to the fixing seat, the proximity switch is fixedly connected to the side of the fixing seat, the screw is threadedly connected to the bottom of the fixing seat, the nut is threadedly fixedly connected to the screw, one end of the oil pipe is threadedly connected to the side of the fixing seat, the round nut is threadedly connected to the fixing seat, and the fixing seat is fixed to the bracket.

[0007] A flow channel is arranged on the inner wall of the fixing seat, and the flow channel is respectively connected with the oil injection circular hole of the copper sleeve and the oil pipe.

[0008] The copper sleeve has an oil injection hole on its wall.

[0009] The depth of the screw thread connection between the screw and the bottom of the fixing seat can be adjusted according to the length of the master cylinder push rod.

[0010] The utility model has the advantages of novel structure, which is used to improve the production rhythm of grease application, and can ensure the amount of oil applied and the uniformity of oil application to avoid waste, so as to achieve the purpose of reducing the abnormal noise caused by friction between the master cylinder push rod and the retaining ring after assembly. The position of the master cylinder push rod oiling can also be adjusted by adjusting the screw insertion depth, which is convenient and quick, and is applied to the master cylinder push rod grease application process in the production process of vacuum boosters of higher-end cars and micro cars. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the place where the vacuum booster assembly currently produces abnormal friction noise. DETAILED DESCRIPTION

[0013] like Figure 1 As shown: it includes a locking nut 1, a sponge 2, a bracket 3, a fixing seat 4, a copper sleeve 5, a proximity switch 6, a screw 7, a nut 8, an oil pipe 9 and a round nut 10, wherein the copper sleeve 5 and the sponge 2 are located in the fixing seat 4, the locking nut 1 is located above the sponge 2 and is threadedly fixedly connected to the fixing seat 4, the proximity switch 6 is fixedly connected to the side of the fixing seat 4, and the other end is connected to the equipment, and the operation of the oil barrel pressure pump is controlled by a program, the screw 7 is threadedly connected to the bottom of the fixing seat 4, the nut 8 is threadedly fixedly connected to the screw 7, one end of the oil pipe 9 is threadedly connected to the side of the fixing seat 4, and the other end is connected to the oil barrel through the pressure pump, the oil pumping is controlled by the program, and the oil pumping amount can be adjusted, the round nut 10 is threadedly connected to the fixing seat 4, and the fixing seat 4 is fixed on the bracket 3.

[0014] The inner wall of the fixing seat 4 is provided with a flow channel 401 , which is connected to the oil injection hole 501 and the oil pipe 9 respectively.

[0015] The copper sleeve 5 has an oil injection hole 501 on its wall.

[0016] The depth of the threaded connection between the screw 7 and the bottom of the fixing seat 4 can be adjusted according to the length of the master cylinder push rod 12 to adjust the screwing depth of the screw 7.

[0017] During operation, the operator inserts the master cylinder push rod 12 through the locking nut 1 and the sponge 2 into the copper sleeve 5. The master cylinder push rod 12 moves downward close to the proximity switch 6, touches the screw 7 and then stops. The oiling position of the master cylinder push rod 12 of different lengths can be adjusted by adjusting the screwing depth of the screw 7. The proximity switch 6 receives the signal and starts pumping oil through the program-controlled oil pump. The grease enters the flow channel 401 between the copper sleeve 5 and the fixing seat 4 through the pipeline 9, and then flows into the inside of the copper sleeve 5 through the oil filling hole 501 on the copper sleeve 5. In order to evenly apply the oil, the operator needs to rotate and lift the master cylinder push rod 12. The excess grease on the master cylinder push rod 12 is blocked by the sponge 2 to ensure uniform and appropriate oiling. The operator takes out the master cylinder push rod 12 to check the oiling condition and completes the oiling process.

Claims

1. An automatic grease application device for a master cylinder push rod, characterized in that: It includes a locking nut, a sponge, a bracket, a fixing seat, a copper sleeve, a proximity switch, a screw, a nut, an oil pipe and a round nut, wherein the copper sleeve and the sponge are located in the fixing seat, the locking nut is located above the sponge and is threadedly fixedly connected to the fixing seat, the proximity switch is fixedly connected to the side of the fixing seat, the screw is threadedly connected to the bottom of the fixing seat, the nut is threadedly fixedly connected to the screw, one end of the oil pipe is threadedly connected to the side of the fixing seat, the round nut is threadedly connected to the fixing seat, and the fixing seat is fixed to the bracket.

2. The automatic grease application device for the master cylinder push rod according to claim 1 is characterized in that: A flow channel is arranged on the inner wall of the fixing seat, and the flow channel is respectively connected with the oil injection circular hole of the copper sleeve and the oil pipe.

3. The automatic grease application device for the master cylinder push rod according to claim 1 is characterized in that: The copper sleeve has an oil injection hole on its wall.

4. The automatic grease application device for the master cylinder push rod according to claim 1 is characterized in that: The depth of the threaded connection between the screw and the bottom of the fixing seat can be adjusted according to the length of the master cylinder push rod.

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