Composite one-way oil discharge nail for brake calipers

Abstract

The utility model discloses a composite one-way oil discharge nail for brake calipers, which comprises a lower shell, a first vent hole is arranged at the center of the lower shell in a penetrating manner, a mounting groove is arranged on the upper surface of the lower shell, an internal thread is arranged on the inner surface of the mounting groove, and a first connecting thread is arranged on the surface of the lower shell, so that the composite one-way oil discharge nail can be conveniently in threaded connection with the brake calipers; second connecting threads are arranged on the surface of the upper shell, the second connecting threads are in threaded connection with the inner threads, the upper shell is sequentially provided with a second vent hole, a connecting groove and an arc-shaped groove from top to bottom, the inner bottom face of the connecting groove is connected with one end of a spring, the other end of the spring is connected with a steel ball, the steel ball is located in the arc-shaped groove, and the surface of the steel ball abuts against an outlet of the first vent hole; the diameter of the steel ball is larger than the aperture of the first vent hole, the first vent hole is conveniently blocked by the steel ball, and meanwhile, the upper end of the upper shell is sleeved with the deflation cover, so that impurities and dust are prevented from entering from the second vent hole, the spring cannot contract in the later period, and exhaust cannot be conducted after oil change of the calipers.

Description

Technical Field

[0001] The utility model particularly relates to a composite one-way oil drain nail for a brake caliper. Background Art

[0002] Brake calipers play a crucial role in a car's braking system. Using hydraulic pressure, they bring the brake pads into close contact with the brake discs, generating friction and braking the vehicle. Brake fluid acts as the key medium for transmitting pressure in this process.

[0003] Traditional methods of bleeding oil from brake calipers have limitations. First, conventional bleed bolts struggle to effectively control the release of air during the bleeding process, which can lead to incomplete oil removal. Residual air can reduce the efficiency of brake pressure transmission, resulting in a soft brake pedal feel and increased braking distance. Second, conventional bleed bolts offer poor sealing, making brake fluid leakage a risk after the oil is drained. This not only affects the proper functioning of the brake system but can also damage other vehicle components. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a composite one-way oil drain nail for a brake caliper, which has the characteristic of avoiding brake fluid leakage after oil drainage.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a composite one-way oil drain nail for a brake caliper, comprising a lower shell, a first vent hole is penetrated at the center of the lower shell, a mounting groove is provided on the upper surface of the lower shell, an internal thread is provided on the inner surface of the mounting groove, a first connecting thread is provided on the surface of the lower shell, an upper shell is provided on the upper end of the lower shell, a second connecting thread is provided on the surface of the upper shell, the second connecting thread is threadedly connected to the internal thread, the upper shell is provided with a second vent hole, a connecting groove and an arc groove in sequence from top to bottom, one end of a spring is connected to the inner bottom surface of the connecting groove, and the other end of the spring is connected to a steel ball,

[0006] The steel ball is located in the arc-shaped groove, the surface of the steel ball is against the outlet of the first vent hole, and the upper end of the upper shell is sleeved with a degassing cover.

[0007] Preferably, a sealing groove is provided on the surface of the upper shell, and a sealing ring is provided in the sealing groove.

[0008] Preferably, the top end of the upper shell is covered with a rubber sleeve, and the outer side of the rubber sleeve is covered with an air release cover.

[0009] Preferably, a first hexagonal column is provided on the surface of the lower shell.

[0010] Preferably, a second hexagonal column is provided on the surface of the upper shell, and the second hexagonal column is located inside the air release cover.

[0011] Preferably, the top of the upper shell is provided with a chamfer.

[0012] Preferably, the rubber sleeve is made of nitrile rubber.

[0013] Preferably, the lower shell and the upper shell are made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the utility model is in use, when performing the deflation operation, the upper shell is loosened through the second hexagonal column. At this time, the connection between the second connecting thread and the internal thread is loosened. At this time, the air pressure in the brake caliper pushes the steel ball, and the steel ball drives the spring to contract. At this time, the gas is discharged through the first vent hole, the installation groove, the connecting groove, and the second vent hole in sequence. When the gas pressure is lower than the elastic force of the spring, under the action of the spring's own elastic force, the spring pushes the steel ball against the outlet of the first vent hole. At this time, the gas in the caliper cannot go out from the first vent hole. Then the upper shell is loosened through the second hexagonal column. At this time, the connection between the second connecting thread and the internal thread is tightened, and the operation is simple and convenient.

[0016] A bleed cap is provided at the upper end of the upper shell to prevent impurities and dust from entering through the second vent hole, which would cause the spring to be unable to contract later and the caliper to be unable to be vented after the oil is changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the utility model from a second angle;

[0021] Figure 4 This is an exploded view of the overall structure of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the upper shell of the utility model.

[0023] In the figure: 1. Lower shell; 101. First vent hole; 102. First connecting thread; 103. First hexagonal column; 104. Internal thread; 105. Mounting groove; 3. Upper shell; 301. Second vent hole; 302. Connecting groove; 303. Arc groove; 304. Second connecting thread; 305. Second hexagonal column; 306. Chamfer; 4. Degassing cap; 5. Steel ball; 6. Spring; 7. Sealing ring; 8. Rubber sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example

[0026] See also Figure 1-5 The utility model provides the following technical solutions: a composite one-way oil drain nail for a brake caliper, comprising a lower shell 1, a first vent hole 101 is provided through the center of the lower shell 1, a mounting groove 105 is provided on the upper surface of the lower shell 1, an inner surface of the mounting groove 105 is provided with an internal thread 104, a first connecting thread 102 is provided on the surface of the lower shell 1, which is convenient for threaded connection with the brake caliper, an upper shell 3 is provided on the upper end of the lower shell 1, a second connecting thread 304 is provided on the surface of the upper shell 3, the second connecting thread 304 is threadedly connected to the internal thread 104, and the upper shell 3 is provided with second vent holes 101 in sequence from top to bottom. The air hole 301, the connecting groove 302 and the arc groove 303, the bottom surface of the connecting groove 302 is connected to one end of the spring 6, and the other end of the spring 6 is connected to the steel ball 5. The steel ball 5 is located in the arc groove 303, and the surface of the steel ball 5 is against the outlet of the first air hole 101. The diameter of the steel ball 5 is larger than the aperture of the first air hole 101, which makes it convenient for the steel ball 5 to block the first air hole 101. At the same time, a degassing cover 4 is provided on the upper end of the upper shell 3 to prevent impurities and dust from entering from the second air hole 301, thereby causing the spring 6 to be unable to contract later, resulting in the inability to exhaust after the caliper is changed.

[0027] A sealing groove is provided on the surface of the upper shell 3, and a sealing ring 7 is provided in the sealing groove, which can effectively ensure the air pressure inside the brake caliper and avoid air leakage when the upper shell 1 and the lower shell 3 are threadedly connected. At the same time, further, the top end of the upper shell 3 is provided with a rubber sleeve 8, and the rubber sleeve 8 is made of nitrile rubber. The outer side of the rubber sleeve 8 is provided with an air release cover 4 to prevent impurities and dust from entering from the second vent 301, thereby causing the spring 6 to be unable to contract later, resulting in the caliper being unable to be vented after the oil is changed. Of course, a chamfer 306 is provided at the top end of the upper shell 3 to facilitate the air release cover 4 to enter the upper cover 3.

[0028] Of course, a first hexagonal column 103 is provided on the surface of the lower shell 1. At the same time, a second hexagonal column 305 is provided on the surface of the upper shell 3. The second hexagonal column 305 is located inside the air bleed cover 4. The first hexagonal column 103 facilitates tightening the lower shell 1 and the caliper body with a wrench after being threaded together. At the same time, the second hexagonal column 305 facilitates tightening the upper shell 3 with a wrench after being threaded together with the lower shell 1.

[0029] To avoid corrosion caused by prolonged contact with brake fluid, the lower shell 1 and the upper shell 3 are made of stainless steel.

[0030] Working principle:

[0031] First, align the first connecting thread 102 with the oil drain hole of the brake caliper, and then tighten it with a wrench through the first hexagonal column 103. Then, place the spring 6 in the connecting groove 302, the steel ball 5 in the arc groove 303, and thread the second connecting thread 304 into the internal thread 104 to complete the connection. Then, a rubber sleeve 8 is placed on the top of the upper shell 3, and the outer side of the rubber sleeve 8 is covered with a bleed cap 4 to complete the fixed connection.

[0032] When deflation is required, the upper shell 3 is loosened through the second hexagonal column 305. At this time, the connection between the second connecting thread 304 and the internal thread 104 is loosened. At this time, the air pressure in the brake caliper pushes the steel ball 5, and the steel ball 5 drives the spring 6 to contract. At this time, the gas is discharged through the first vent 101, the installation groove 105, the connecting groove 302, and the second vent 301 in sequence. When the gas pressure is lower than the elastic force of the spring 6, under the action of the spring 6's own elastic force, the spring 6 pushes the steel ball 5 against the outlet of the first vent 101. At this time, the gas in the caliper cannot go out from the first vent 101. Then the upper shell 3 is loosened through the second hexagonal column 305. At this time, the connection between the second connecting thread 304 and the internal thread 104 is tightened, and the operation is simple and convenient.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. Composite one-way oil drain nail for brake caliper, characterized by: The invention comprises a lower shell (1), wherein a first vent hole (101) is provided through the center of the lower shell (1), a mounting groove (105) is provided on the upper surface of the lower shell (1), an inner surface of the mounting groove (105) is provided with an inner thread (104), a surface of the lower shell (1) is provided with a first connecting thread (102), an upper shell (3) is provided on the upper end of the lower shell (1), a second connecting thread (304) is provided on the surface of the upper shell (3), and the second connecting thread (304) is threadedly connected to the The upper shell (3) is provided with a second vent hole (301), a connecting groove (302) and an arc groove (303) in sequence from top to bottom. The inner bottom surface of the connecting groove (302) is connected to one end of a spring (6). The other end of the spring (6) is connected to a steel ball (5). The steel ball (5) is located in the arc groove (303). The surface of the steel ball (5) is against the outlet of the first vent hole (101). The upper end of the upper shell (3) is provided with a degassing cover (4).

2. The composite one-way oil drain nail for a brake caliper according to claim 1, characterized in that: A sealing groove is provided on the surface of the upper shell (3), and a sealing ring (7) is provided in the sealing groove.

3. The composite one-way oil drain nail for a brake caliper according to claim 1, characterized in that: The top end of the upper shell (3) is provided with a rubber sleeve (8), and the outer side of the rubber sleeve (8) is provided with a degassing cover (4).

4. The composite one-way oil drain nail for a brake caliper according to claim 1, characterized in that: A first hexagonal column (103) is provided on the surface of the lower shell (1).

5. The composite one-way oil drain nail for a brake caliper according to claim 3, characterized in that: A second hexagonal column (305) is provided on the surface of the upper shell (3), and the second hexagonal column (305) is located inside the air release cover (4).

6. The composite one-way oil drain nail for a brake caliper according to claim 2, characterized in that: The top end of the upper shell (3) is provided with a chamfer (306).

7. The composite one-way oil drain nail for a brake caliper according to claim 3, characterized in that: The rubber sleeve (8) is made of nitrile rubber.

8. The composite one-way oil drain nail for a brake caliper according to claim 1, characterized in that: The lower shell (1) and the upper shell (3) are made of stainless steel.

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