General detection device for caliper sealing limit sample piece

Abstract

The utility model discloses a general detection device for a caliper sealing limit sample piece. Comprising a base, a deflation screw, a cover plate and a piston assembly, one end of the base is provided with an air insertion hole used for being connected with an air insertion gun in a matched mode, the base and the cover plate are fixedly connected, an air chamber is defined in the base and the cover plate, and one end of the piston assembly is movably installed in the air chamber in a sealed mode in the direction towards or away from the air chamber. The side wall, where the air chamber is located, of the base is provided with an air bleed screw. According to the utility model, original solid calipers are replaced to be used as a sample piece, the required requirement can be met according to the volume adjustment of an actual product cavity, the production cost of a sealing limit sample piece is reduced, the production variety of the sample piece is reduced, and the placing space of the sample piece is saved.

Description

Technical Field

[0001] The utility model relates to an automobile braking system, in particular to a universal detection device for a caliper sealing limit sample. Background Art

[0002] The existing caliper sealing limit samples are samples made from the product entity. The physical product requires each type of test sample to be produced, resulting in a lot of waste. Utility Model Content

[0003] In order to solve the problems in the background technology, the utility model provides a universal detection device for caliper sealing limit samples.

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

[0005] The utility model comprises a base, a bleed screw, a cover plate and a piston assembly. An air insertion hole for cooperating with an air plug gun is opened at one end of the base. The base and the cover plate are fixedly connected and enclose an air chamber inside. One end of the piston assembly can be sealed and installed outside the air chamber in a movable direction toward or away from the air chamber. The other end of the piston assembly extends out of the air chamber. A bleed screw is provided on the side wall of the base where the air chamber is located.

[0006] The piston assembly includes a piston, a cotter pin, a handle, a screw and a straight pin. The piston can be moved toward or away from the air insertion hole and is sealed and installed in the air chamber. One end of the screw passes through the cover plate and extends into the air chamber and is connected to the piston through the straight pin. The other end of the screw extends out of the air chamber and is connected to the handle through the cotter pin.

[0007] The base and the cover are fixedly connected by a first hexagon socket screw.

[0008] It also includes a second hexagon socket screw and a threaded sleeve. The threaded sleeve is fixed in the central through hole of one end face of the cover away from the base through the second hexagon socket screw. The screw is threaded through the threaded sleeve.

[0009] A round nut is sleeved on the screw rod between the handle and the threaded sleeve, and the round nut is used for locking the screw rod to the outer surface of the threaded sleeve.

[0010] An annular sealing groove is provided on the inner wall of the base which cooperates with the piston, and a rectangular sealing ring is installed in the sealing groove.

[0011] The beneficial effects of this utility model are as follows: by adjusting the cavity volume, this utility model can replace the original single-cavity or dual-cavity physical caliper as a prototype, reducing the production cost of sealing limit prototypes, reducing the number of prototypes produced, and saving prototype storage space. The universal caliper sealing limit prototype detection device can be adjusted according to the actual product cavity volume to meet the required requirements, thereby reducing the number of physical prototypes and storage space, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the universal detection device of the present utility model.

[0013] Figure 2 This is a schematic diagram of the airtightness detection limit sample structure in the prior art.

[0014] In the figure: 1. Base, 2. Bleed screw, 3. First hexagon socket screw, 4. Cover plate, 5. Second hexagon socket screw, 6. Cotter pin, 7. Handle, 8. Screw, 9. Round nut, 10. Threaded sleeve, 11. Straight pin, 12. Rectangular sealing ring, 13. Piston, 14. Air plug gun. DETAILED DESCRIPTION

[0015] The structure of the airtightness detection limit sample in the prior art is as follows: Figure 2 As shown, the caliper includes components such as a bleed screw, piston, and rectangular sealing ring. Existing caliper seal limit samples are available in single- and dual-cavity versions. The volume of each cavity is not adjustable, requiring individual test samples to be manufactured for each specific product. The new caliper can be adjusted to meet actual product requirements, reducing the number of physical samples and storage space.

[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0017] The universal testing device for caliper sealing limit samples is used for testing samples with changing sealing limit values ​​such as low pressure, high pressure and vacuum. Figure 1 As shown, the device includes a base 1, a bleed screw 2, a cover plate 4 and a piston assembly. One end of the base 1 is provided with an air insertion hole for cooperating with the air plug gun 14, and the other end of the base 1 is cooperating with the cover plate 4. The base 1 and the cover plate 4 are fixedly connected and enclose an air chamber inside. One end of the piston assembly can be sealed and installed in the air chamber in a movable direction toward or away from the air chamber, and the other end of the piston assembly extends out of the air chamber. The side wall of the base 1 where the air chamber is located is provided with a through hole for installing the bleed screw 2 for discharging the gas in the air chamber.

[0018] The piston assembly includes a piston 13, a cotter pin 6, a handle 7, a screw 8, and a straight pin 11. The piston 13 is sealed and mounted within the air chamber, allowing it to move toward or away from the air insertion hole. One end of the screw 8 extends through the cover plate 4 into the air chamber and is connected to the piston 13 via the straight pin 11. The other end of the screw 8 extends out of the air chamber and is connected to the handle 7 via the cotter pin 6. After one end of the screw 8 is connected to the piston 13 via the straight pin 11, the screw 8 and piston 13 are integrated along the axial direction toward or away from the air insertion hole, and the two move synchronously.

[0019] Specifically, the base 1 and the cover plate 4 are fixedly connected and sealed by a first hexagon socket screw 3 .

[0020] Specifically, it also includes a second hexagon socket screw 5 and a threaded sleeve 10. The threaded sleeve 10 is fixed in the central through hole of the end face of the cover plate 4 away from the base 1 through the second hexagon socket screw 5. The screw 8 is arranged by passing through the threaded sleeve 10 through the thread, so that the screw 8 is arranged and installed through the cover plate 4 through the threaded sleeve 10.

[0021] More specifically, the first hexagon socket screw 3 is an M6X50 hexagon socket screw, and the second hexagon socket screw 5 is an M6X10 hexagon socket screw.

[0022] A round nut 9 is mounted on the screw rod 8 between the handle 7 and the threaded sleeve 10. The round nut 9 is used to lock the screw rod 8 to the outer surface of the threaded sleeve 10. When locking, the round nut 9 is in contact with the outer surface of the threaded sleeve 10. After the debugging of the universal sealing detection device is completed, the screw rod 8 is locked and fixed with the round nut 9. The corresponding detection device can be selected as needed during the subsequent power-on verification.

[0023] Specifically, an annular sealing groove is provided on the inner wall of the base 1 that cooperates with the piston 13 , and a rectangular sealing ring 12 is installed in the sealing groove.

[0024] The assembly and working process of the universal testing device for caliper sealing limit samples are as follows:

[0025] When the production line is started, the debugged device is connected to the corresponding sealing detection air plug gun 14. The test leakage system automatically detects the device as required and displays the detection value. It can be used for sealing detection of both single-cylinder calipers and double-cylinder calipers. Specifically, the air plug gun 14 is connected to the base 1 and blows air. The handle 7 is rotated to make the screw 8 and the threaded sleeve 10 move relative to each other to achieve the reciprocating movement of the piston 13 in the cavity of the base 1. The rectangular sealing ring 12 prevents gas leakage. More specifically, the cylinder hole volume of the base 1 simulates the volume required by the actual caliper. By rotating the handle 7, the screw 8 drives the piston 13 to move back and forth in the base 1 to achieve the change of the gas volume in the cavity of the base 1, thereby realizing whether the leakage value test meets the requirements. If the detection medium is liquid, the residual gas in the cavity of the base 1 is discharged through the bleed screw 2.

Claims

1. A universal testing device for caliper sealing limit samples, characterized by: The invention comprises a base (1), a bleed screw (2), a cover plate (4) and a piston assembly. One end of the base (1) is provided with an air insertion hole for connecting with an air insertion gun (14). The base (1) and the cover plate (4) are fixedly connected and enclose an air chamber inside. One end of the piston assembly can be sealed and installed in the air chamber in a movable direction toward or away from the air chamber. The other end of the piston assembly extends out of the air chamber. The side wall of the base (1) where the air chamber is located is provided with a bleed screw (2).

2. The universal testing device for caliper sealing limit samples according to claim 1, characterized in that: The piston assembly comprises a piston (13), a cotter pin (6), a handle (7), a screw rod (8) and a straight pin (11). The piston (13) is sealed and mounted in the air chamber so as to be movable toward or away from the air insertion hole. One end of the screw rod (8) passes through the cover plate (4) and extends into the air chamber, where it is connected to the piston (13) via the straight pin (11). The other end of the screw rod (8) extends out of the air chamber and is connected to the handle (7) via the cotter pin (6).

3. The universal testing device for caliper sealing limit samples according to claim 1, characterized in that: The base (1) and the cover plate (4) are fixedly connected via a first hexagon socket screw (3).

4. The universal testing device for caliper sealing limit samples according to claim 2, characterized in that: It also includes a second hexagon socket screw (5) and a threaded sleeve (10), wherein the threaded sleeve (10) is fixed in a central through hole of an end face of the cover plate (4) away from the base (1) by the second hexagon socket screw (5), and the screw rod (8) is arranged by passing through the threaded sleeve (10) through a thread.

5. The universal testing device for caliper sealing limit samples according to claim 4, characterized in that: A round nut (9) is sleeved on the screw rod (8) between the handle (7) and the threaded sleeve (10). The round nut (9) is used to lock the screw rod (8) to the outer surface of the threaded sleeve (10).

6. The universal testing device for caliper sealing limit samples according to claim 1, characterized in that: The base (1) is provided with an annular sealing groove on the inner wall matched with the piston (13), and a rectangular sealing ring (12) is installed in the sealing groove.

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