Push rod assembly of vacuum booster

Abstract

The utility model is applicable to the technical field of vacuum boosting, and provides a push rod assembly of a vacuum booster, which comprises a high-pressure tank and a partition plate, the partition plate is fixedly connected to the middle of the inside of the high-pressure tank, a first sliding hole is arranged at the top of the partition plate, and a sealing tank is fixedly connected to the bottom of the partition plate. The partition plate divides the interior of the high-pressure tank into a first air bin and a second air bin, and a push rod structure is slidably connected to the interior of the partition plate. According to the push rod assembly of the vacuum booster, the input rod directly acts on the output rod, so that the input rod directly interacts with the output rod when driving the output rod to move, and energy loss is reduced; when the reset spring and the first connecting pipe move to the position between the two open holes in the side of the adjusting bin from the first piston, the extraction valve is closed, the first connecting pipe communicates with the outside through the second sliding hole, and therefore the air pressure in the second air bin and the air pressure in the first air bin are flush, and the input rod can be reset by the reset spring conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum boosting, and in particular relates to a push rod assembly of a vacuum booster. Background Art

[0002] A vacuum booster is a device used to assist the braking system of a car. It uses the vacuum of the engine intake pipe to generate negative pressure, and enhances the braking ability of the braking system through vacuum suction. When the driver steps on the brake pedal, the vacuum booster can provide additional force, helping the driver to apply braking force more easily and shorten the braking distance.

[0003] The current vacuum booster design generally uses gas to provide secondary boost to the push rod. In this structure, the push rod itself is divided into two ends. This layout inevitably leads to higher energy loss. Utility Model Content

[0004] The utility model provides a push rod assembly of a vacuum booster, aiming to solve the problem that the current vacuum booster design generally adopts gas to perform secondary boosting on the push rod. In this structure, the push rod itself is divided into two ends, and this layout inevitably leads to a high energy loss problem.

[0005] The utility model is implemented as follows: a push rod assembly of a vacuum booster includes a high-pressure tank and a partition, wherein the partition is fixedly connected to the middle of the high-pressure tank, a first sliding hole is provided on the top of the partition, and a sealing tank is fixedly connected to the bottom of the partition, the partition divides the interior of the high-pressure tank into a first air chamber and a second air chamber, and a push rod structure is slidably connected inside the partition.

[0006] Preferably, a conduit is fixedly connected to the bottom of the high-pressure tank, and an adjusting chamber is fixedly connected to the top of the high-pressure tank, and a second sliding hole is provided on the top of the adjusting chamber, the interior of the conduit is communicated with the interior of the second gas chamber, and an exhaust valve is provided at the bottom of the high-pressure tank, and the exhaust valve is communicated with the interior of the second gas chamber.

[0007] Preferably, two vertically distributed openings are provided on one side of the regulating chamber, and the two openings are respectively fixedly connected to a first connecting pipe and a second connecting pipe.

[0008] Preferably, the first connecting tube is connected to an opening located at the top of one side of the regulating chamber, and the end of the first connecting tube is communicated with the interior of the second air chamber, and the second connecting tube is connected to an opening located at the bottom of one side of the regulating chamber, and the end of the second connecting tube is communicated with the interior of the first air chamber.

[0009] Preferably, the push rod structure is provided with an input rod, and the upper end of the input rod is fixedly connected to the first piston, and the bottom of the first piston is fixedly connected to a return spring, the return spring is located on the outside of the input rod, and one end of the return spring away from the first piston is fixedly connected to the top of the partition, the lower end of the input rod is fixedly connected to the second piston, and the lower end of the input rod is provided with an output rod.

[0010] Preferably, the first piston is slidably connected to the inside of the regulating chamber, and the second piston is slidably connected to the inside of the sealing tank, and the output rod is slidably connected to the inside of the conduit, and the output rod extends to the outside of the high-pressure tank.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] The input rod directly acts on the output rod, so that the input rod directly interacts with the output rod when driving the output rod to move, thereby reducing energy loss. When the return spring and the first connecting pipe move the first piston between the two openings on the side of the adjusting chamber, the air extraction valve is closed, and the first connecting pipe is connected to the outside through the second sliding hole, so that the air pressure inside the second air chamber is equal to the air pressure inside the first air chamber, which facilitates the return spring to reset the input rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the partition of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the high-pressure tank of the utility model;

[0017] In the figure: 1. high-pressure tank; 2. partition; 3. first slide hole; 4. sealing tank; 5. first gas chamber; 6. second gas chamber; 7. conduit; 8. regulating chamber; 9. second slide hole; 10. exhaust valve; 11. first connecting pipe; 12. second connecting pipe; 13. input rod; 14. first piston; 15. return spring; 16. second piston; 17. output rod. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] In a further preferred embodiment of the present invention, Figure 1 — Figure 4 As shown, it includes a high-pressure tank 1 and a partition 2. The partition 2 is fixedly connected to the middle of the high-pressure tank 1, and a first sliding hole 3 is provided on the top of the partition 2, and a sealing tank 4 is fixedly connected to the bottom of the partition 2. The partition 2 divides the interior of the high-pressure tank 1 into a first gas chamber 5 and a second gas chamber 6, and a push rod structure is slidably connected inside the partition 2. A conduit 7 is fixedly connected to the bottom of the high-pressure tank 1, and an adjusting chamber 8 is fixedly connected to the top of the high-pressure tank 1, and a second sliding hole 9 is provided on the top of the adjusting chamber 8. The inside of the conduit 7 is communicated with the inside of the second gas chamber 6. An air extraction valve 10 is provided at the bottom of the pressure tank 1, and the air extraction valve 10 is communicated with the interior of the second gas bin 6. Two vertically distributed openings are provided on one side of the regulating bin 8, and the two openings are respectively fixedly connected with a first connecting pipe 11 and a second connecting pipe 12. The first connecting pipe 11 is connected to the opening located at the top of one side of the regulating bin 8, and the end of the first connecting pipe 11 is communicated with the interior of the second gas bin 6. The second connecting pipe 12 is connected to the opening located at the bottom of one side of the regulating bin 8, and the end of the second connecting pipe 12 is communicated with the interior of the first gas bin 5.

[0021] First, connect the exhaust valve 10 to the negative pressure pipe. At this time, the negative pressure pipe will extract the air inside the second gas chamber 6 inside the high-pressure tank 1 through the exhaust valve 10, so that a negative pressure environment is formed inside the second gas chamber 6. At this time, the interior of the second gas chamber 6 is connected with the interior of the regulating chamber 8 through the first connecting pipe 11. At this time, the air inside the regulating chamber 8 will be extracted to form a negative pressure environment. Since the interior of the regulating chamber 8 is connected with the second connecting pipe 12, the first gas chamber 5 will extract the air inside the first gas chamber 5 through the connection of the second connecting pipe 12 to form a negative pressure environment.

[0022] In a further preferred embodiment of the present invention, Figure 1 — Figure 4 As shown, the push rod structure is provided with an input rod 13, and the upper end of the input rod 13 is fixedly connected to a first piston 14, and the bottom of the first piston 14 is fixedly connected to a return spring 15, the return spring 15 is located outside the input rod 13, and one end of the return spring 15 away from the first piston 14 is fixedly connected to the top of the partition 2, the lower end of the input rod 13 is fixedly connected to a second piston 16, and the lower end of the input rod 13 is provided with an output rod 17, the first piston 14 is slidably connected to the inside of the regulating chamber 8, and the second piston 16 is slidably connected to the inside of the sealing tank 4, the output rod 17 is slidably connected to the inside of the conduit 7, and the output rod 17 extends to the outside of the high-pressure tank 1;

[0023] When a negative pressure environment is formed inside the first gas chamber 5 and the second gas chamber 6, the input rod 13 is pressed down, so that the input rod 13 drives the first piston 14 to slide downward inside the regulating chamber 8. When the first piston 14 slides downward, the first piston 14 will move between the two openings on the side of the regulating chamber 8. At this time, the regulating chamber 8 is divided into two closed valve spaces by the first piston 14. At this time, since the air extraction valve 10 continues to extract the air inside the second gas chamber 6, when the first piston 14 moves between the two openings on the side of the regulating chamber 8, the first connecting pipe 11 is connected to the outside through the second sliding hole 9, so that the second gas chamber 6 is 6 and the first gas chamber 5 are equal to each other. As the first piston 14 continues to move downward, until the first piston 14 moves to below the two openings on the side of the regulating chamber 8, the first connecting pipe 11 and the second connecting pipe 12 will be connected through the regulating chamber 8. At this time, the first connecting pipe 11 and the second connecting pipe 12 are both connected to the outside through the second sliding hole 9. Since the air extraction valve 10 continues to extract the gas inside the second gas chamber 6, the air pressure inside the second gas chamber 6 will drive the second piston 16 to slide downward in the sealing tank 4, thereby pushing the output rod (17) to complete the assisting process for the input rod (13).

[0024] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present invention.

[0025] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0026] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0027] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A push rod assembly of a vacuum booster, characterized in that: The invention comprises a high-pressure tank (1) and a partition (2), wherein the partition (2) is fixedly connected to the middle of the high-pressure tank (1), a first sliding hole (3) is provided on the top of the partition (2), and a sealing tank (4) is fixedly connected to the bottom of the partition (2), the partition (2) divides the interior of the high-pressure tank (1) into a first gas chamber (5) and a second gas chamber (6), and a push rod structure is slidably connected to the interior of the partition (2).

2. A push rod assembly of a vacuum booster according to claim 1, characterized in that: The bottom of the high-pressure tank (1) is fixedly connected with a conduit (7), and the top of the high-pressure tank (1) is fixedly connected with an adjusting chamber (8), and a second sliding hole (9) is provided on the top of the adjusting chamber (8); the interior of the conduit (7) is communicated with the interior of the second gas chamber (6); the bottom of the high-pressure tank (1) is provided with an air extraction valve (10), and the air extraction valve (10) is communicated with the interior of the second gas chamber (6).

3. A push rod assembly of a vacuum booster as claimed in claim 2, characterized in that: One side of the regulating chamber (8) is provided with two openings which are vertically distributed, and the two openings are respectively fixedly connected to a first connecting pipe (11) and a second connecting pipe (12).

4. A push rod assembly of a vacuum booster as claimed in claim 3, characterized in that: The first connecting tube (11) is connected to an opening located at the top of one side of the regulating chamber (8), and the end of the first connecting tube (11) is communicated with the interior of the second gas chamber (6); the second connecting tube (12) is connected to an opening located at the bottom of one side of the regulating chamber (8), and the end of the second connecting tube (12) is communicated with the interior of the first gas chamber (5).

5. A push rod assembly of a vacuum booster according to claim 1, characterized in that: The push rod structure is provided with an input rod (13), and the upper end of the input rod (13) is fixedly connected to a first piston (14), and the bottom of the first piston (14) is fixedly connected to a return spring (15), the return spring (15) is located outside the input rod (13), and one end of the return spring (15) away from the first piston (14) is fixedly connected to the top of the partition (2), the lower end of the input rod (13) is fixedly connected to a second piston (16), and the lower end of the input rod (13) is provided with an output rod (17).

6. A push rod assembly of a vacuum booster as claimed in claim 5, characterized in that: The first piston (14) is slidably connected to the inside of the regulating chamber (8), and the second piston (16) is slidably connected to the inside of the sealing tank (4), and the output rod (17) is slidably connected to the inside of the conduit (7), and the output rod (17) extends to the outside of the high-pressure tank (1).

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