Dustproof plug cap for annular joint of brake hose assembly

Abstract

The utility model discloses a dustproof plug cap for an annular joint of a brake hose assembly, which comprises a first plug cap dustproof cover and a second plug cap dustproof cover which are positioned on two sides, are oppositely arranged and are connected through a connecting arm, one end of the first plug cap dustproof cover and one end of the second plug cap dustproof cover which are connected are of an opening-shaped structure, a lug protruding forwards is arranged on the front portion of the end, protrusions are arranged on the inner side face of the first plug cap dustproof cover and the inner side face of the second plug cap dustproof cover, and the thicknesses of the protrusions are gradually increased from the opening side of the dustproof cover to the other side of the dustproof cover. The plug cap can be easily worn on the annular connector in a sliding mode, so that the assembling efficiency is greatly improved, meanwhile, when the plug cap needs to be disassembled, the plug cap can be disassembled by pushing the convex lugs with one hand, and the operation is simple.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic brake hose assemblies, and particularly relates to a new type of dust-proof plug cap that is used on the annular joints of brake hose assemblies and is convenient to wear and remove. Background Technique

[0002] As one of the important components in the vehicle braking system, the performance of the hydraulic brake hose assembly directly affects the braking performance of the vehicle, thus determining the driving safety of the vehicle. When there are impurities inside the brake hose assembly, the impurities will enter the braking system during the use of the brake hose, affecting the braking performance of the vehicle. Therefore, before the brake hose assembly is installed on the vehicle, a dust-proof plug cap needs to be worn to prevent impurities from entering the inside of the brake hose.

[0003] The hydraulic brake hose assembly is composed of a metal joint and a brake hose, as Figure 1 shown. The metal joint is generally divided into an internal thread joint and an annular joint. The commonly used annular joints have a thickness of 8 mm and 10 mm, and an outer diameter of 17 mm, 18 mm, and 19 mm. The metal joint and the brake hose are riveted together and then assembled into the braking system through the connection of the metal joint. Therefore, wearing a dust-proof plug cap on the metal joint can prevent impurities from entering the inside of the brake hose.

[0004] Most of the existing dust-proof plug caps used for the annular joints of hydraulic brake hose assemblies are like Figure 2 shown. When wearing this plug cap, it is necessary to first put the grooved protrusion into the annular joint, then bend the protrusion 180 degrees by hand and put it into the groove of the protrusion, and then pinch it forcefully to fasten it together. This wearing method is time-consuming and laborious, and it is not easy to achieve automatic assembly.

[0005] In addition, when the brake hose is in use, the plug cap needs to be removed. In order to prevent the plug cap from falling off during transportation, the fastening state of the above plug cap is generally designed to be very tight. Therefore, during the removal process of the plug cap, one hand needs to hold the brake hose, and the other hand needs to pull forcefully at the tail of the plug cap to remove it. This removal method is also time-consuming and laborious, and it is easy to cause complaints from the users. Summary of the Invention

[0006] The purpose of the utility model is to provide a dust-proof plug cap for the annular joint of the brake hose assembly to solve the defects in the above-mentioned prior art.

[0007] To achieve the above object, the technical solution adopted by the present utility model is as follows: A dust-proof plug cap for a circular joint of a brake hose assembly, comprising a first plug cap dust-proof cover and a second plug cap dust-proof cover which are located on both sides and are oppositely arranged. The first plug cap dust-proof cover and the second plug cap dust-proof cover are connected by a connecting arm. After connection, one end of the first plug cap dust-proof cover and the second plug cap dust-proof cover is an open structure, and a lug protruding forward is provided at the front part of this end. Raised portions are provided on the inner side surfaces of the first plug cap dust-proof cover and the second plug cap dust-proof cover, and the thickness of the raised portions gradually becomes thicker from the open side of the dust-proof cover to the other side.

[0008] As a further preference of this solution, both the first plug cap dust-proof cover and the second plug cap dust-proof cover are set to be circular, and their diameter D1 is 14 - 20 mm.

[0009] As a further preference of this solution, the inner side surface at the front end of the first plug cap dust-proof cover and the second plug cap dust-proof cover is a bevel structure, and the angle θ of the bevel is 5 - 25 degrees.

[0010] As a further preference of this solution, the thickness of the lug is consistent with the thickness at the top of the first plug cap dust-proof cover and the second plug cap dust-proof cover.

[0011] As a further preference of this solution, the height H1 between the outer surfaces of the first plug cap dust-proof cover and the second plug cap dust-proof cover is 10 - 15 mm, and the height H2 between the inner surfaces is 8 - 13 mm.

[0012] As a further preference of this solution, the height H3 between the upper and lower inner surfaces of the lug is 8.5 - 13.5 mm.

[0013] As a further preference of this solution, the shape of the raised portion is an inclined surface cylindrical shape that gradually rises from the outside to the inside. The raised portion is located at the center of the dust-proof cover. The height H4 of the lowest point is 0.2 - 0.6 mm, the height H5 of the highest point is 0.6 - 1.5 mm, and the outer diameter D2 is 8 - 10 mm.

[0014] As a further preference of this solution, the shape of the lug is square, and its length L and width W are respectively 0 - 5 mm.

[0015] As a further preference of this solution, the shape of the lug is circular, and the radius R is 0 - 5 mm.

[0016] The beneficial effects of the present utility model are:

[0017] (1) The overall structure of the present utility model is C-shaped, and the height H3 between the upper and lower inner surfaces of the lug is greater than the height H2 of the upper and lower inner surfaces of the dust cover. Moreover, the shape of the protrusion on the inner surface of the dust cover is an inclined surface cylindrical shape that gradually rises from the outside to the inside. Therefore, the plug cap can be very easily slipped and worn on the annular joint, thus greatly improving the assembly efficiency. And for the dust plug cap with this structure, it only needs to be snapped into the annular joint without the extra action of forceful fastening. Therefore, it is very easy to achieve automated assembly, thereby achieving the goal of reducing labor costs.

[0018] (2) The edge of the dust cover of the present utility model is designed with lugs. When the plug cap needs to be removed, it can be removed by simply pushing the lug with one hand, and the operation is simple, greatly reducing the workload of removing the plug cap.

[0019] (3) The dust cover of the present utility model is circular, which can effectively cover both sides of the annular joint. And there is a protrusion in the shape of an inclined surface cylinder on the inner surface of the dust cover, which not only ensures the convenience of wearing the plug cap but also ensures that the plug cap will not slip off the joint after being worn, ultimately ensuring the effectiveness of the dust-proof function of the plug cap. Description of the Drawings

[0020] Figure 1 is a hydraulic brake hose assembly.

[0021] Figure 2 is a dust plug cap for the annular joint of the existing hydraulic brake hose assembly.

[0022] Figure 3 is a three-dimensional view of the dust plug cap of the present utility model.

[0023] Figure 4 is a front view of the dust plug cap of the present utility model.

[0024] Figure 5 is a side view of the dust plug cap of the present utility model.

[0025] The reference numerals in the figures are: 1 - connecting arm, 2 - first dust cover of the plug cap, 3 - second dust cover of the plug cap, 4 - protrusion, 5 - lug, 6 - internal thread joint, 7 - brake hose, 8 - annular joint. Detailed Implementation Modes

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Such as Figures 3 to 5As shown in the figure, this embodiment provides a dust-proof plug for the annular joint of a brake hose assembly, which includes a first plug dust cover 2 and a second plug dust cover 3 that are located on both sides and are oppositely arranged. The first plug dust cover 2 and the second plug dust cover 3 are connected by a connecting arm 1. After connection, one end of the first plug dust cover 2 and the second plug dust cover 3 is an open structure, and a lug 5 that protrudes forward is provided at the front of this end. Raised portions 4 are provided on the inner side surfaces of the first plug dust cover 2 and the second plug dust cover 3, and the thickness of the raised portion 4 gradually becomes thicker from the open side of the dust cover to the other side.

[0028] Embodiment 1

[0029] In this embodiment, the height H1 between the outer surfaces of the first plug dust cover 2 and the second plug dust cover 3 is 11.4 mm, and the height H2 between the inner surfaces is 8.2 mm. The dust cover is circular, and the diameter D1 of the circular dust cover is 17 mm. The height H3 between the upper and lower inner surfaces of the lug 5 is 9.0 mm. The inner surface of the lug 5 is connected to the inner surface of the dust cover by an inclined surface, and the angle θ of the inclined surface is 10 degrees. The shape of the lug 5 is square, with a length L of 5 mm and a width W of 2.5 mm. There is a raised portion 4 on the inner surface of the dust cover, and its shape is an inclined surface cylindrical shape that gradually rises from the outside to the inside. The raised portion is located at the center of the circular dust cover. The height H4 of the lowest point is 0.4 mm, the height H5 of the highest point is 0.9 mm, and the outer diameter D2 is 9.8 mm. Embodiment 1 is applicable to an annular joint with a thickness of 8 mm and an outer diameter of 19 mm.

[0030] Embodiment 2

[0031] In this embodiment, the height H1 between the outer surfaces of the first plug dust cover 2 and the second plug dust cover 3 is 13.4 mm, and the height H2 between the inner surfaces is 10.2 mm. The dust cover is circular, and the diameter D1 of the circular dust cover is 17 mm. The height H3 between the upper and lower inner surfaces of the lug 5 is 11.0 mm. The inner surface of the lug 5 is connected to the inner surface of the dust cover by an inclined surface, and the angle θ of the inclined surface is 10 degrees. The shape of the lug 5 is square, with a length L of 5 mm and a width W of 2.5 mm. There is a raised portion 4 on the inner surface of the dust cover, and its shape is an inclined surface cylindrical shape that gradually rises from the outside to the inside. The raised portion is located at the center of the circular dust cover. The height H4 of the lowest point is 0.4 mm, the height H5 of the highest point is 0.9 mm, and the outer diameter D2 is 9.8 mm. Embodiment 2 is applicable to an annular joint with a thickness of 10 mm and an outer diameter of 19 mm.

[0032] Embodiment 3

[0033] In this embodiment, the height H1 between the outer surfaces of the first plug cap dust cover 2 and the second plug cap dust cover 3 is 13.4 mm, and the height H2 between the inner surfaces is 10.2 mm. The dust cover is circular, and the diameter D1 of the circular dust cover is 17 mm. The height H3 between the upper and lower inner surfaces of the lug 5 is 11.0 mm. The inner surface of the lug 5 is connected to the inner surface of the dust cover through an inclined surface, and the angle θ of the inclined surface is 10 degrees. The shape of the lug 5 is circular, and the radius R is 5 mm. There is a protrusion 4 on the inner surface of the dust cover, and its shape is an inclined surface cylindrical shape that gradually rises from the outside to the inside. The protrusion is located at the center of the circular dust cover. The height H4 of the lowest point is 0.4 mm, the height H5 of the highest point is 0.9 mm, and the outer diameter D2 is 9.8 mm. Embodiment 3 is applicable to an annular joint with a thickness of 10 mm and an outer diameter of 19 mm.

[0034] Embodiment 4

[0035] In this embodiment, the height H1 between the outer surfaces of the first plug cap dust cover 2 and the second plug cap dust cover 3 is 13.4 mm, and the height H2 between the inner surfaces is 10.2 mm. The dust cover is circular, and the diameter D1 of the circular dust cover is 17 mm. There is no protrusion at the edge of the dust cover, that is, the protrusion size is 0 mm. There is a protrusion 4 on the inner surface of the dust cover, and its shape is an inclined surface cylindrical shape that gradually rises from the outside to the inside. The protrusion 4 is located at the center of the circular dust cover. The height H4 of the lowest point is 0.4 mm, the height H5 of the highest point is 0.9 mm, and the outer diameter D2 is 9.8 mm. Embodiment 4 is applicable to an annular joint with a thickness of 10 mm and an outer diameter of 17 mm.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those of ordinary skill in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form. Any technical solutions obtained by means of equivalent replacement and the like fall within the protection scope of the present invention. The parts not involved in the present invention are the same as the prior art or can be implemented by the prior art.

Claims

1. A dustproof plugging cap for a brake hose assembly annular joint, characterized in that: It comprises a first blocking cap dust cover and a second blocking cap dust cover which are located on both sides and are arranged opposite to each other. The first blocking cap dust cover and the second blocking cap dust cover are connected by a connecting arm. After the connection, one end of the first blocking cap dust cover and the second blocking cap dust cover is an open structure, and the front part of the end is provided with a lug protruding forward. The inner side surfaces of the first blocking cap dust cover and the second blocking cap dust cover are both provided with a protrusion, and the thickness of the protrusion gradually becomes thicker from the opening side to the other side of the dust cover.

2. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The first blocking cap dust cover and the second blocking cap dust cover are both configured to be circular, and the diameter D1 thereof is 14-20 mm.

3. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The front inner side surfaces of the first blocking cap dust cover and the second blocking cap dust cover are inclined structures.

4. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 3, characterized in that: The angle θ of the inclined surface is 5-25 degrees.

5. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 3, characterized in that: The thickness of the lug is consistent with the thickness of the top ends of the first blocking cap dust cover and the second blocking cap dust cover.

6. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The height H1 between the outer surfaces of the first blocking cap dust cover and the second blocking cap dust cover is 10-15 mm, and the height H2 between the inner surfaces is 8-13 mm.

7. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The height H3 between the upper and lower inner surfaces of the lug is 8.5-13.5 mm.

8. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The protrusion is in the shape of an inclined cylinder that gradually rises from the outside to the inside. The protrusion is located at the center of the dust cover, the height H4 of the lowest point is 0.2-0.6mm, the height H5 of the highest point is 0.6-1.5mm, and the outer diameter D2 is 8-10mm.

9. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The lug is in a square shape, and its length L and width W are respectively 0-5 mm.

10. The dustproof plugging cap for the annular joint of a brake hose assembly according to claim 1, characterized in that: The lug is circular in shape, and the radius R is 0-5 mm.

Images