Brake oil pipe

Abstract

The utility model discloses a brake oil pipe which comprises a connector inner core and a sleeve sleeved on the connector inner core, the connector inner core comprises a thick pipe section and a thin pipe section, a positioning step is arranged between the thick pipe section and the thin pipe section, a sealing groove used for installing a sealing ring is formed between the positioning step and the thick pipe section, and a thick hole section and a thin hole section are arranged in the sleeve. And the slim hole section is sleeved on the positioning step and is tightly matched with the positioning step. The thick pipe section, the thin pipe section and the positioning step between the thick pipe section and the thin pipe section are arranged in the connector inner core, the sealing groove is formed between the positioning step and the thick pipe section and used for installing the sealing ring, and meanwhile the thin hole section in the sleeve is tightly matched with the positioning step, so that the sealing performance and the structural stability of the brake oil pipe are remarkably improved. The positioning step is tightly matched with the slim hole section, so that shaking caused by a gap between the sleeve and the joint inner core is effectively avoided, the leakage problem caused by sealing failure is prevented, and stable and reliable operation of a brake system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake oil pipe technical field, concretely is a brake oil pipe. BACKGROUND

[0002] In the automobile brake system, the performance of brake oil pipe is directly related to the driving safety. A kind of brake oil pipe, its main structure includes joint inner core and sleeve that are sleeved on joint core. However, in practical application, it is found that the traditional brake oil pipe has certain defects. After sleeve is sleeved on joint inner core, due to the fact that the inner hole diameter of sleeve is greater than the outer diameter of joint inner core, gap exists between sleeve and joint inner core, and when the two are sleeved, it is prone to shaking phenomenon. This shaking can lead to sealing failure, and then the brake oil pipe is prone to leakage problem. Once brake oil pipe leaks, it will seriously affect the normal work of brake system, and bring great hidden danger to driving safety. Therefore, it is urgent to improve the structure of existing brake oil pipe to solve the above technical problems. SUMMARY

[0003] The utility model provides a brake oil pipe for the deficiency in the background art.

[0004] The technical scheme adopted by the utility model is as follows: a brake oil pipe, including joint inner core, sleeve that are sleeved on joint core, the joint inner core includes thick pipe section and thin pipe section, positioning step is equipped between thick pipe section and thin pipe section, the positioning step and thick pipe section form sealing groove for installing sealing ring, the sleeve is equipped with thick hole section and thin hole section, the thin hole section is sleeved on positioning step and is closely matched with it.

[0005] Further, the thick hole section is equipped with internal thread.

[0006] Further, it further includes sleeve that is sleeved on thick pipe section, and the sleeve includes threaded portion and hexagonal portion.

[0007] Further, the joint inner core top is further provided with limiting step that prevents sleeve from sliding out of joint inner core top.

[0008] Further, the inner hole inner diameter of thin hole section is less than the outer diameter of thick pipe section.

[0009] Further, the inner hole inner diameter of thin hole section is 0.02-0.05mm less than the outer diameter of thick pipe section.

[0010] The utility model discloses a beneficial effect is: effectively avoid the sealing failure problem caused by the shaking between sleeve and joint inner core.

[0011] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structural schematic diagram of the utility model.

[0013] Fig. 2 It is the explosion schematic diagram of the utility model.

[0014] Fig. 3 It is the cross section schematic diagram of the utility model.

[0015] Figs. 1-3 1, joint inner core;2, sleeve;3, thick pipe section;4, thin pipe section;5, positioning step;6, sealing groove;7, thick hole section;8, thin hole section;9, internal thread;10, screw sleeve;11, threaded portion;12, hexagonal portion;13, limiting step. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] It should be noted that if the embodiments of the utility model have involved directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0018] The utility model provides a kind of brake oil pipe.

[0019] In the present embodiment, refer to Figs. 1-3The brake oil pipe comprises a joint inner core 1, a sleeve 2 sleeved on the joint core 1, the joint inner core 1 comprises a thick pipe section 3 and a thin pipe section 4, a positioning step 5 is arranged between the thick pipe section and the thin pipe section, a sealing groove 6 for mounting a sealing ring is formed between the positioning step and the thick pipe section, a thick hole section 7 and a thin hole section 8 are arranged in the sleeve, and the thin hole section is sleeved on the positioning step and tightly matches the positioning step.

[0020] In the technical scheme, the thick pipe section, the thin pipe section and the positioning step between the thick pipe section and the thin pipe section are arranged in the joint inner core, the sealing groove for mounting the sealing ring is formed between the positioning step and the thick pipe section, and the thin hole section in the sleeve tightly matches the positioning step, so that the sealing performance and the structural stability of the brake oil pipe are improved. The tight matching between the positioning step and the thin hole section effectively avoids the shaking between the sleeve and the joint inner core due to the gap, prevents the leakage caused by the sealing failure, and ensures the stable and reliable operation of the brake system.

[0021] Specifically, the thick hole section is internally provided with an internal thread 9.

[0022] In the embodiment, the internal thread is arranged in the thick hole section, and the connection stability between the skin pipe and the thick hole section can be improved when the skin pipe is fixed.

[0023] Specifically, the brake oil pipe further comprises a screw sleeve 10 sleeved on the thick pipe section, and the screw sleeve comprises a threaded portion 11 and a hexagonal portion 12.

[0024] In the embodiment, the screw sleeve is used for threaded connection with other components.

[0025] Specifically, the joint inner core is further provided with a limiting step 13 at the top of the joint inner core to prevent the screw sleeve from sliding out of the joint inner core.

[0026] In the embodiment, the limiting step arranged at the top of the joint inner core can effectively prevent the screw sleeve from sliding out of the joint inner core.

[0027] Specifically, the inner hole diameter of the thin hole section is smaller than the outer diameter of the thick pipe section.

[0028] In the embodiment, the inner hole diameter of the thin hole section is smaller than the outer diameter of the thick pipe section, and the size design can ensure that the thin hole section tightly matches the positioning step and also limits the axial movement of the joint inner core in the sleeve to a certain extent, so that the stability of the overall structure of the brake oil pipe is further improved, and the sealing problem caused by the relative movement of components is reduced.

[0029] Specifically, the inner hole diameter of the thin hole section is 0.02-0.05 mm smaller than the outer diameter of the thick pipe section.

[0030] Skilled technicians should know: although the utility model has been described in the above specific embodiments, the utility model idea is not limited to this utility model, any modification using the utility model idea will be included in the patent protection range.

Claims

1. A brake hose, comprising a connector inner core and a sleeve fitted onto the connector core, characterized in that: The inner core of the connector includes a thick pipe section and a thin pipe section. A positioning step is provided between the thick pipe section and the thin pipe section. A sealing groove for installing a sealing ring is formed between the positioning step and the thick pipe section. The sleeve is provided with a coarse hole section and a thin hole section. The thin hole section is fitted onto the positioning step and fits tightly with it.

2. The brake hose according to claim 1, characterized in that: The coarse-hole section is provided with internal threads.

3. The brake hose according to claim 1, characterized in that: It also includes a threaded insert fitted onto the thicker pipe section, the threaded insert comprising a threaded portion and a hexagonal portion.

4. The brake hose according to claim 3, characterized in that: The top of the inner core of the connector is also provided with a limiting step to prevent the threaded sleeve from sliding out from the top of the inner core of the connector.

5. The brake hose according to claim 1, characterized in that: The inner diameter of the fine-diameter section is smaller than the outer diameter of the thick-diameter section.

6. The brake hose according to claim 1, characterized in that: The inner diameter of the fine-diameter section is 0.02-0.05 mm smaller than the outer diameter of the coarse-diameter section.

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