Piston stamping assembly and air booster pump

Abstract

The utility model relates to a piston stamping assembly and an air booster pump, the piston stamping assembly comprises a push rod, a stamping piston and a fastener, the push rod is provided with a central axis arranged along a first direction, the stamping piston is formed by stamping a steel plate material, and the stamping piston is fixed on the push rod by the fastener. The fastener is detachably arranged on the push rod, the fastener and the stamping piston are in contact connection, and the fastener and the stamping piston are in an extruded state. The stamping piston assembly solves the problems that a piston in an existing stamping piston assembly is mostly made of aluminum parts, strength is low, stress deformation resistance is poor, and assembly of the piston and other assemblies in the stamping piston assembly is not firm.

Description

Technical Field

[0001] The utility model relates to the technical field of piston stamping, in particular to a piston stamping component and an air booster pump. Background Art

[0002] The ram piston assembly is a part of the air booster pump product and is specifically installed inside the cylinder of the air booster pump. When compressed air enters the cylinder of the air booster pump, the air pressure acts on the ram piston assembly, prompting it to move forward; when the brake is released, the ram piston assembly returns to its initial position under the action of the return spring.

[0003] At present, the pistons in stamped piston assemblies are mostly made of aluminum parts, which have the problems of low strength and poor ability to resist deformation under force, and the pistons are not firmly assembled with other components in the stamped piston assembly. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a piston stamping assembly and an air booster pump.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] In a first aspect, a piston stamping assembly is provided, the piston stamping assembly comprising:

[0007] a push rod having a central axis arranged along a first direction;

[0008] The cam is secured to the outside of the second annular plate portion and secured to the inside of the second annular plate portion with respect to the first annular plate portion and secured to the inside of the second annular plate portion with respect to the second annular plate portion.

[0009] The fastener for fixing the punching piston on the push rod is detachably arranged on the push rod. The fastener is in contact with and connected to the punching piston and the two are in an extruded state.

[0010] In some embodiments, it further includes: a sealing gasket sleeved on the push rod, the stamping piston is in contact with and connected to the sealing gasket and the two are in a mutually extruded state, and the sealing gasket and the fastener are located on both sides of the stamping piston.

[0011] In some embodiments, the fastener is threaded onto the push rod.

[0012] In some embodiments, the force applied to the stamping piston is 163 MPa.

[0013] In a second aspect, an air booster pump is provided, comprising the piston stamping assembly according to any one of the first aspects, wherein an embedding groove is formed at the junction of the edge ring plate portion and the tubular portion, and the air booster pump further comprises:

[0014] an elastic ring, sleeved on the tubular portion and located at the embedding groove;

[0015] Cylinder block;

[0016] The piston stamping assembly is arranged on the cylinder body.

[0017] The beneficial effects of the present invention are as follows: the stamping piston in the present invention solves the problems of low strength, poor stress resistance and deformation resistance of existing aluminum pistons and material waste by adopting a structure of stamping and forming a plastic steel plate material. The stamping piston adopts an integrated design, including a first circular plate portion, a second circular plate portion, a bowl wall portion, a side circular plate portion and a tubular portion. All components are formed at one time through a stamping forming process, which effectively reduces the number of parts and assembly procedures; the stamping piston forms multiple circular plate portions and bowl wall portions in one piece through a stamping process, which reduces the number of independent components in the traditional air booster pump piston assembly, reduces the processing difficulty and production cost; the various components of the stamping piston adopt a colinear design and are tightly combined, which can effectively improve the sealing of the air booster pump, reduce air leakage and improve the boosting efficiency; the stamping process of the stamping piston is more accurate than the traditional processing method, reduces material waste and production costs, and makes the technical solution more environmentally friendly; the stamping piston effectively shortens the production cycle and improves production efficiency by simplifying the processing and assembly process of the components, while ensuring the consistency and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a piston stamping assembly and its associated parts provided in one embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of an air booster pump provided in one embodiment of the utility model.

[0021] Figure 3 This is a performance analysis diagram of a stamping piston provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0023] The air booster pump's function is to apply hydraulic braking by introducing a certain amount of compressed air into the cylinder, which acts on the ram piston assembly to generate thrust. This forces the master cylinder piston to move, reducing the fluid storage space within the master cylinder chamber and building up hydraulic pressure. This hydraulic pressure is then transmitted to the brake caliper, pushing the caliper piston to grip the brake disc, thus braking the vehicle. The ram piston is housed within the air booster pump's cylinder. When compressed air enters the cylinder, the air pressure acts on the ram piston assembly, forcing it forward. When the brakes are released, the ram piston assembly returns to its initial position under the action of the return spring.

[0024] Currently, pistons in stamped piston assemblies are mostly made of aluminum, which has the disadvantages of low strength and poor resistance to deformation under load, and unstable assembly between the piston and other components of the stamped piston assembly. Therefore, this utility model proposes a stamped piston assembly with the characteristics of high compressive strength, low cost, high production efficiency, and strong stability. This cylinder stamped piston assembly is suitable for use in products such as air booster pumps and air brakes for construction machinery.

[0025] like Figure 1 — Figure 2 In one embodiment, a piston stamping assembly is provided, which includes: a push rod 1, a stamping piston 3 and a fastener.

[0026] The push rod 1 is placed horizontally and has a central axis arranged along a first direction (horizontally and transversely); in one embodiment, the push rod 1 includes a columnar push rod 1 body and a columnar right end portion extending horizontally and transversely to the right at the right end of the push rod 1 body, the rod diameter of the columnar right end portion is smaller than the rod diameter of the right side of the push rod 1 body, thereby forming a stop groove at the intersection of the columnar right end portion and the right side of the push rod 1 body. In some embodiments, the piston stamping assembly further includes: a sealing gasket 2 sleeved on the stop groove of the push rod 1, the stamping piston 3 is in contact with the sealing gasket 2 and the two are in a state of mutual extrusion, the sealing gasket 2 and the fastener are located on both sides of the stamping piston 3, wherein the stamping piston 3 is pushed by the fastener to be squeezed against the sealing gasket 2.

[0027] The stamping piston 3 is formed by stamping a plastic steel plate material. The stamping piston 3 includes a first circular plate portion 31, a second circular plate portion 32 located outside the first circular plate portion 31, a bowl wall portion 33 located between the first circular plate portion 31 and the second circular plate portion 32, a side circular plate portion 34 located outside the second circular plate portion 32, and a tubular portion 35 located between the second circular plate portion 32 and the side circular plate portion 34. The first circular plate portion 31, the second circular plate portion 32 and the side circular plate portion 34 are parallel to each other and are perpendicular to the central axis of the push rod 1. The first circular plate portion 31 is located at the lower left of the second circular plate portion 32 but at the lower right of the side circular plate portion 34. The central axis of each part of the stamping piston 3 is collinear with the central axis of the push rod 1. The first annular plate portion 31 is mounted on the push rod 1. The diameter of the first annular plate portion 31 is adapted to the diameter of the cylindrical right end portion of the push rod 1. The left and right ports of the bowl wall portion 33 are securely engaged with the outer edge of the first annular plate portion 31 and the inner edge of the second annular plate portion 32, respectively. The left and right ports of the tubular portion 35 are fully engaged with the outer edge of the second annular plate portion 32 and the inner edge of the side annular plate portion 34, respectively. The traditional piston is made of aluminum. The cost of this stamping piston 3 is about half that of the traditional one. The stamping piston 3 has a deep V-shaped structure and is designed with an increased area to reduce the influence of piston deformation under stress. In one embodiment, as Figure 3 As shown, the force applied to the punching piston 3 is about 163 MPa, which meets the strength requirement. In some embodiments, the surface of the punching piston 3 is electrophoretically treated to ensure the sealing accuracy requirement of the surface.

[0028] The fastener fixes the stamping piston 3 to the push rod 1. The fastener is detachably arranged on the push rod 1. The fastener is in contact with the stamping piston 3 and the two are in an extruded state. In some embodiments, the fastener is threadedly connected to the cylindrical right end of the push rod 1. In some embodiments, the fastener includes an elastic washer 5 and a nut 6. The right side of the stamping piston 3 is respectively provided with the elastic washer 5 and the nut 6. By tightening the nut 6, the stamping piston 3 is locked to the push rod 1. The stamping piston assembly consists of a stamping piston 3 made of steel plate material, a push rod 1, a sealing gasket 2, an elastic washer 5 and a nut 6. The overall structure is simple, easy to install, firmly connected, not easy to fall off, and has stable and reliable working performance.

[0029] To assemble the stamping piston assembly, simply insert the sealing gasket 2 and the stamping piston 3 on the push rod 1, and then lock it with the elastic washer 5 and nut 6. Figure 1As shown, the stamping piston 3 is stamped from high-strength, yet highly pliable steel. The sealing gasket 2 is tightly attached to the push rod 1 and the end faces of the stamping piston 3, providing a seal. The elastic washer 5 and nut 6 secure the push rod 1, stamping piston 3, and sealing gasket 2 to prevent loosening. The end faces of the push rod 1 and stamping piston 3, which are in close contact with the sealing gasket 2, have a high degree of roughness, ensuring a complete seal.

[0030] In some embodiments, the present invention provides an air booster pump, which includes any one of the piston stamping assemblies described above, wherein an embedding groove is formed at the junction of the edge ring plate portion 34 and the tubular portion 35, and the air booster pump further includes: an elastic ring 4 and a cylinder body 7, wherein the elastic ring 4 is sleeved on the tubular portion 35 and is located at the embedding groove;

[0031] The piston stamping assembly is mounted on the cylinder body 7.

[0032] The installation of the stamping piston assembly is simple and convenient. You only need to put the elastic ring 4 on the outer circle of the stamping piston assembly, and then install it on the cylinder body 7, and push it in with a little force. Figure 2 shown.

[0033] The stamped piston 3, by using a structure stamped from a plastic steel plate, solves the problems of low strength, poor stress resistance and deformation resistance, and material waste in existing aluminum pistons. The stamped piston 3 adopts an integrated design, including a first circular plate portion 31, a second circular plate portion 32, a bowl wall portion 33, a side circular plate portion 34, and a tubular portion 35. All components are formed in one step through a stamping process, effectively reducing the number of parts and assembly steps. The stamped piston 3 uses a stamping process to integrally form the multiple circular plate portions and bowl wall portion 33, eliminating the number of independent components in a conventional air booster pump piston assembly, reducing processing difficulty and production costs. The components of the stamped piston 3 adopt a collinear design, which is tightly integrated and can effectively improve the sealing of the air booster pump, reduce air leakage, and enhance supercharging efficiency. The stamping process of the stamped piston 3 is more precise than traditional processing methods, reducing material waste and production costs, while making the technical solution more environmentally friendly. By simplifying the processing and assembly process of the components, the stamped piston 3 effectively shortens the production cycle, improves production efficiency, and ensures product consistency and reliability.

[0034] The above description is merely a preferred embodiment of one or more embodiments of the present invention and is not intended to limit one or more embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present invention shall be included in the scope of protection of one or more embodiments of the present invention.

Claims

1. Piston stamping assembly, characterized in that, include: a push rod having a central axis arranged along a first direction; The cam is secured to the outside of the second annular plate portion and secured to the inside of the second annular plate portion with respect to the first annular plate portion and the inside of the second annular plate portion with respect to the second annular plate portion. The fastener for fixing the punching piston on the push rod is detachably arranged on the push rod. The fastener is in contact with and connected to the punching piston and the two are in an extruded state.

2. The piston stamping assembly according to claim 1, characterized in that: Also includes: A sealing gasket is sleeved on the push rod, the stamping piston is in contact with and connected to the sealing gasket and the two are in a mutually extruded state, and the sealing gasket and the fastener are located on both sides of the stamping piston.

3. The piston stamping assembly according to claim 1, characterized in that The fastener is threadedly connected to the push rod.

4. The piston stamping assembly according to claim 1, characterized in that: The force applied to the punching piston is 163 MPa.

5. Air booster pump, characterized in that: The piston stamping assembly comprises the piston stamping assembly according to any one of claims 1 to 4, wherein an embedding groove is formed at the junction of the edge ring plate portion and the tubular portion, and the air booster pump further comprises: an elastic ring, sleeved on the tubular portion and located at the embedding groove; Cylinder block; The piston stamping assembly is arranged on the cylinder body.

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