Internal grease injection tool for piston shield

Abstract

The utility model discloses a tool for injecting grease into a piston shield. The tool is used for the internal grease injection process of the piston shield and comprises a positioning seat, an oil receiving disc and a grease injection head. An oil receiving disc is arranged below the grease injection head, is circumferentially positioned and mounted on the outer circumferential surface of the positioning seat, and is used for preventing grease from overflowing to pollute an external workbench; the grease injection head is installed at the top of the positioning base, the piston shield is arranged at the upper end of the grease injection head and makes contact with the grease injection head, the interior of the piston shield faces the grease injection head, and grease injection operation is conducted by pressing the grease injection button. The constant delivery pump is connected with an external oil storage device, the weight of lubricating grease injected into the piston shield is controlled more accurately, production cost waste and redundant labor cost are avoided, and the requirements for easy operation, high efficiency, high quality and low cost are met.

Description

Technical Field

[0001] This utility model relates to the field of brake caliper assembly and manufacturing, specifically to a grease injection fixture for the inside of a piston cover. Background Technology

[0002] Brake calipers are crucial automotive components, and with the rapid development of the automotive industry in recent years, the demands on these parts have increased significantly. The piston guard of the brake caliper is designed to prevent impurities such as mud and sand, and requires grease lubrication during assembly and operation. Currently, grease is stirred and applied to the piston guard before assembly. However, during this process, solidified grease can easily become embedded in the folds on the outside of the piston guard. During braking in a new car, the grease in these folds can liquefy upon heating and flow onto the back of the brake pads, posing a risk of contaminating other components. The most effective solution currently is to apply grease to the piston guard in a measured and targeted manner, ensuring no grease remains on the outside of the guard. However, this still carries the risk of grease liquefaction and contamination of other components. Utility Model Content

[0003] To address the problems existing in the background art, this utility model provides a grease injection fixture for the inside of a piston cover, which applies grease quantitatively and in a specific location inside the piston cover.

[0004] The technical solution adopted in this utility model is:

[0005] This utility model includes a positioning seat, an oil receiving tray, and a grease injection head;

[0006] An oil receiving tray is provided below the grease injection head. The oil receiving tray is positioned and installed on the outer peripheral surface of the positioning seat. The oil receiving tray is used to prevent grease from overflowing and contaminating the external workbench. The grease injection head is installed on the top of the positioning seat. The piston guard is placed on the upper end of the grease injection head and contacts the grease injection head. The inside of the piston guard faces the grease injection head for grease injection operation.

[0007] The top of the positioning seat is provided with an internal threaded hole, which is fixedly connected to the lower end of the grease injection head through a threaded fit. The positioning seat is provided with a central through hole as an oil delivery pipe, the top end of which is connected to the grease injection head. A sealing ring is provided between the positioning seat and the grease injection head to prevent grease from overflowing.

[0008] Each end of the bottom of the positioning seat has a flange mounting hole for fixing the positioning seat to an external workbench.

[0009] The center of the bottom of the positioning seat is provided with an oil inlet threaded hole. The upper end of the oil inlet threaded hole is connected to the bottom end of the oil pipeline. The lower end of the oil inlet threaded hole is connected to one end of the conduit by threaded engagement with the conduit connector. The other end of the conduit is connected to an external oil storage device. A metering pump is also provided on the conduit.

[0010] The grease injection head has several oil outlet holes evenly distributed on its top side wall. These oil outlet holes are all connected to the oil delivery pipe and are used to inject grease into the interior of the piston cover.

[0011] The outer peripheral side of the grease injection head is uniformly provided with several radial protrusions as positioning components, which are used to match the grease injection position of the piston cover.

[0012] The outer peripheral surface of the positioning seat is provided with a stepped structure, and the inner peripheral surface of the oil receiving tray is provided with a stepped hole. The stepped hole fits into the stepped structure on the outer peripheral surface of the positioning seat to form a positioning fit.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention connects a metering pump to an oil storage device, enabling more precise control of the weight of lubricating grease injected into the piston cover. This avoids waste of production costs and unnecessary labor costs, significantly reducing the risk of grease contaminating other components after liquefaction, and achieving the requirements of easy operation, high efficiency, high quality, and low cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of applying grease to the piston cover of this utility model.

[0018] In the diagram: 1. Positioning seat, 2. Oil receiving tray, 3. Grease injection head, 4. Sealing ring, 5. Piston cover, 6. Guide tube. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The structural schematic diagram of this utility model is shown below. Figure 1 As shown, this utility model is used for the internal grease injection process of piston cover 5, including positioning seat 1, oil receiving tray 2 and grease injection head 3;

[0021] The grease injection head 3 is provided with an oil receiving tray 2 below it. The oil receiving tray 2 is circumferentially positioned on the outer circumferential surface of the positioning seat 1. The oil receiving tray 2 is used to prevent grease from overflowing and contaminating the external workbench. The grease injection head 3 is installed on the top of the positioning seat 1. The piston cover 5 is placed on the upper end of the grease injection head 3 and is in contact with the grease injection head 3. The inside of the piston cover 5 faces the grease injection head 3. Press the grease injection button to perform the grease injection operation.

[0022] The cross-sectional view of this utility model is as follows: Figure 2 As shown, the top of the positioning seat 1 is provided with an internal threaded hole, which is fixedly connected to the lower end of the grease injection head 3 through a threaded fit. The positioning seat 1 is provided with a central through hole as an oil delivery pipe, and the top end of the oil delivery pipe is connected to the grease injection head 3. A sealing ring 4 is provided between the positioning seat 1 and the grease injection head 3 to prevent grease from overflowing.

[0023] Each end of the bottom of the positioning seat 1 has a flange mounting hole for fixing the positioning seat 1 to the external workbench.

[0024] The center of the bottom of the positioning seat 1 is provided with an oil inlet threaded hole. The upper end of the oil inlet threaded hole is connected to the bottom end of the oil pipeline. The lower end of the oil inlet threaded hole is connected to one end of the conduit 6 through a joint thread engagement with the conduit 6. The conduit 6 is also equipped with a metering pump, which can inject grease into the grease injection tool in a metered manner. The other end of the conduit 6 is connected to an external oil storage device.

[0025] Several oil outlet holes are evenly provided on the side wall of the top of the grease injection head 3. All oil outlet holes are connected to the oil supply pipe and are used to inject grease into the inside of the piston cover 5.

[0026] In practice, 12 oil outlet holes are evenly provided on the side wall of the top of the grease injection head 3.

[0027] The outer contour of the grease injection head 3 is designed according to the shape of the piston cover 5. During grease injection, the grease can be evenly applied to the inside of the piston cover 5, and the risk of grease contaminating the outside of the piston cover 5 and thus polluting other parts can be avoided.

[0028] The outer peripheral side of the grease injection head 3 is evenly provided with several radial protrusions as positioning components, which are used to match the grease injection position of the piston cover 5.

[0029] The outer circumferential surface of the positioning seat 1 is provided with a stepped structure, and the inner circumferential surface of the oil receiving tray 2 is provided with a stepped hole. The stepped hole fits into the stepped structure on the outer circumferential surface of the positioning seat 1 to form a positioning fit. More specifically, the shoulder of the stepped hole and the stepped surface of the stepped structure are in contact for positioning, thereby allowing the positioning seat 1 and the oil receiving tray 2 to be positioned and installed.

[0030] In specific implementation, the schematic diagram of applying grease to the piston cover of this utility model is shown below. Figure 3As shown, during production, the piston cover 5 is placed on the upper end of the grease injection head 3 of the grease injection fixture and in contact with the grease injection head 3. The inside of the piston cover 5 faces the grease injection head 3. Then, the grease injection button is pressed, and the metering pump on the conduit 6 generates pressure and restricts the amount of grease, so that the grease enters the oil delivery pipe in the positioning seat 1 from the external oil storage device through the conduit 6, and then enters the grease injection head 3. The grease is evenly injected into the inside of the piston cover 5 through the 12 oil outlets on the grease injection head 3.

[0031] The above description of the embodiments is intended to detail the technical concept and key features of this utility model, and is aimed at helping those skilled in the art to understand the content of the utility model and implement it accordingly, but is not intended to limit the scope of protection of this utility model. Any equivalent substitutions, changes or modifications made based on the core spirit and technical essence of this utility model should be considered as being covered within the scope of protection of this utility model, so as to ensure the applicability and innovativeness of its technical solution in various situations.

Claims

1. A grease injection fixture for the inside of a piston cover, characterized in that: It includes a positioning seat (1), an oil receiving tray (2), and a grease injection head (3); the oil receiving tray (2) is provided below the grease injection head (3), and the oil receiving tray (2) is positioned and installed on the outer peripheral surface of the positioning seat (1). The oil receiving tray (2) is used to prevent grease from overflowing and contaminating the external workbench; the grease injection head (3) is installed on the top of the positioning seat (1), and the piston cover (5) is placed on the upper end of the grease injection head (3) and in contact with the grease injection head (3). The inside of the piston cover (5) faces the grease injection head (3) for grease injection operation.

2. The piston cover internal grease injection fixture according to claim 1, characterized in that: The top of the positioning seat (1) is provided with an internal threaded hole, which is fixedly connected to the lower end of the grease injection head (3) through threaded engagement. The positioning seat (1) is provided with a central through hole as an oil delivery pipe, and the top end of the oil delivery pipe is connected to the grease injection head (3). A sealing ring (4) is provided between the positioning seat (1) and the grease injection head (3) to prevent grease from overflowing.

3. The piston cover internal grease injection fixture according to claim 1, characterized in that: The bottom of the positioning seat (1) has flange mounting holes at both ends for fixing the positioning seat (1) to the external workbench.

4. The piston cover internal grease injection fixture according to claim 2, characterized in that: The positioning seat (1) has an oil inlet threaded hole at the center of its bottom. The upper end of the oil inlet threaded hole is connected to the bottom end of the oil pipeline. The lower end of the oil inlet threaded hole is connected to one end of the conduit (6) through a joint thread engagement with the conduit (6). The other end of the conduit (6) is connected to an external oil storage device. A metering pump is also installed on the conduit (6).

5. The piston cover internal grease injection fixture according to claim 2, characterized in that: The grease injection head (3) has several oil outlet holes evenly distributed on the side wall at the top. The oil outlet holes are all connected to the oil supply pipe and are used to inject grease into the interior of the piston cover (5).

6. The piston cover internal grease injection fixture according to claim 5, characterized in that: The outer peripheral side of the grease injection head (3) is uniformly provided with a number of radial protrusions as positioning components, which are used to match the grease injection position of the piston cover (5).

7. The piston cover internal grease injection fixture according to claim 1, characterized in that: The outer peripheral surface of the positioning seat (1) is provided with a stepped structure, and the inner peripheral surface of the oil receiving tray (2) is provided with a stepped hole. The stepped hole is fitted onto the stepped structure on the outer peripheral surface of the positioning seat (1) to form a positioning fit.

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