Commercial vehicle clamp body column pin hole waterproof clamp

Abstract

The utility model relates to the field of vehicle calliper, disclose commercial calliper body column pin hole waterproof calliper, including the calliper body (1), the left side and the right side of calliper body (1) all are provided with column pin hole (2), install the column pin in column pin hole (2), still include dust cover (3), dust cover (3) cover in the upper of column pin and correspond to insert in column pin hole (2) inside, the inner wall of column pin hole (2) is set up with sealing groove (4), sealing groove (4) is matched with sealing element (5), dust cover (3) and sealing element (5) close contact, sealing element (5) is in extrusion state. The dust cover not only has the advantage that the sealing is reliable, but also can increase the friction, increase the reliability of dust cover fixed, avoid the jolt drop.

Description

Technical Field

[0001] This utility model relates to the field of calipers, and more particularly to waterproof calipers with pin holes in commercial vehicle caliper bodies. Background Technology

[0002] Commercial vehicle air brake calipers have dust covers installed on the upper part of the pins. These dust covers typically fit tightly against the pin holes to prevent rainwater or other liquids from seeping into the pins through gaps in the dust cover and caliper body during rainy or flooded conditions, thus preventing rust and malfunctions of internal caliper components. However, vehicles inevitably encounter complex terrain and harsh weather conditions, especially heavy rain and flooded areas. Vibrations during driving can cause the dust covers to deform due to these vibrations or impacts, resulting in inadequate sealing. In severe cases, the covers may even detach, significantly reducing or eliminating their dustproof sealing function. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a waterproof caliper with a pinhole for commercial vehicle clamps.

[0004] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0005] The commercial vehicle caliper with a pin hole includes a caliper body, with pin holes on both the left and right sides, and a pin installed in each pin hole; it also includes a dust cover, which covers the pin and is inserted into the pin hole; the inner wall of the pin hole has a sealing groove, and a sealing element fits in the sealing groove, with the dust cover in close contact with the sealing element, and the sealing element being in a compressed state.

[0006] Preferably, the sealing element is an O-ring with a circular cross-section, and the inner diameter of the sealing ring is smaller than the outer diameter of the dust cover.

[0007] Preferably, the sealing groove is an annular groove with an arc-shaped cross-section. The outer ring of the dust cover is bent to form an outwardly protruding ring. The dust cover forms a groove on the inner side of the protruding ring. The sealing element is a sealing gasket, which is bonded to the outer surface of the protruding ring. After the dust cover is pressed into the pin hole, the protruding ring is engaged in the sealing groove.

[0008] Preferably, the dust cover is a metal part with elastic deformation capability.

[0009] Preferably, the convex ring has strip-shaped fixing holes on both sides, and the back of the sealing gasket has a raised T-shaped positioning strip. When the sealing gasket is stretched, the positioning strip is fitted into the positioning hole.

[0010] Preferably, the maximum outer diameter of the convex ring is greater than the inner diameter of the pin hole, with a difference of 0.5mm to 1mm.

[0011] Preferably, the upper end of the dust cover is bent to form a limiting ring, which abuts against the upper surface of the pin hole.

[0012] Compared with existing technologies, this solution offers the following advantages: A sealing ring groove and sealing structure are added to the inner side of the pin. After the dust cover is installed, the compression deformation of the sealing structure ensures a tighter fit between the dust cover and the pin hole, making it less prone to detachment in case of deformation, thus increasing safety. Furthermore, the presence of the sealing ring prevents water from entering the pin hole even in flooded areas, significantly reducing the risk of rust. This design not only improves the product's waterproof performance and reduces the risk of the pin cover detaching due to deformation, but also reduces the likelihood of brake failure, making the vehicle safer and more reliable during driving, while also reducing maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the caliper.

[0014] Figure 2 This is a cross-sectional view of the caliper.

[0015] Figure 3 yes Figure 2 Enlarged image.

[0016] Figure 4 These are schematic diagrams of the dust covers for Embodiments 2 and 3.

[0017] Figure 5 yes Figure 4 Cross-sectional view of the dust cover.

[0018] Figure 6 yes Figure 5 A magnified view of a portion of the image.

[0019] The technical names of the reference numerals in the figure are as follows: 1—clamp body, 2—pin hole, 3—dust cover, 4—sealing groove, 5—seal, 6—convex ring, 7—groove, 8—sealing gasket, 9—deformation groove, 10—fixing hole, 11—limiting ring, 12—positioning strip. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] A waterproof caliper with pin holes for commercial vehicles includes a caliper body 1, with pin holes 2 on both the left and right sides of the caliper body 1, each containing a pin. It also includes a dust cover 3, which covers the pin and is inserted into the pin hole 2. A sealing groove 4 is formed on the inner wall of the pin hole 2, and a sealing element 5 fits within the sealing groove 4. The dust cover 3 and the sealing element 5 are in close contact, with the sealing element 5 under compression. The pins are divided into long pins and short pins. In this design, both long and short pins are equipped with this waterproof structure, which will not be discussed separately here. Generally, after the pin is fully installed in the pin hole 2, there is still a portion of the pin hole 2 remaining empty above the pin. This portion is used to install the dust cover 3, with the outer ring of the dust cover 3 in close contact with the inner wall of the pin hole 2. The upper end of the dust cover 3 is bent to form a limiting retaining ring 11, which abuts against the upper surface of the pin hole 2.

[0023] To maximize the sealing function of the sealing ring while also increasing friction, the sealing element 5 in this design is a circular O-ring with an inner diameter smaller than the outer diameter of the dust cover 3. After the dust cover 3 is installed, the compression deformation of the sealing ring ensures a tighter fit between the dust cover 3 and the pin hole 2, making it less prone to detachment and increasing safety. Furthermore, the presence of the sealing ring prevents water from entering the pin hole 2 even in flooded areas, significantly reducing the risk of rust. This design not only improves the product's waterproof performance and reduces the risk of the pin cover detaching due to deformation, but also reduces the likelihood of brake failure, making the vehicle safer and more reliable during driving, while also reducing maintenance costs.

[0024] Example 2

[0025] The difference between this embodiment and Embodiment 1 is that this solution uses a deformable positioning protrusion 6 on the outer side of the dust cover 3 to achieve both positioning and sealing. Specifically, the sealing groove 4 is an annular groove with an arc-shaped cross-section. The outer ring of the dust cover 3 is bent to form an outwardly protruding protrusion 6. The dust cover 3 forms a groove 7 on the inner side of the protrusion 6. The sealing element 5 is a sealing gasket 8, which is adhered to the outer surface of the protrusion 6. After the dust cover 3 is pressed into the pin hole 2, the protrusion 6 is engaged in the sealing groove 4. Vertical deformation grooves 9 are evenly arranged along the circumference of the dust cover 3, extending to the lower end of the dust cover 3 and passing through the protrusion 6 at the upper end. The sealing gasket 8 is a rubber sealing gasket 8. Compared with Embodiment 1, this structure can ensure the positioning of the dust cover 3 and the pin hole 2 to prevent them from falling off. At the same time, it can increase the sealing stroke and increase the sealing height. In addition, this structure does not require the installation of a sealing ring, allowing the sealing gasket 8 to be installed externally, making the operation more convenient. Clearly, the dust cover 3 is a metal part with elastic deformation capability. This allows the convex ring 6 to reduce its outer diameter through the deformation space provided by the deformation groove 9 when the dust cover 3 is pushed in. After reaching the sealing groove 4, it restores its original outer diameter to achieve positioning and sealing.

[0026] Example 3

[0027] Based on Embodiment 2, strip-shaped fixing holes 10 are provided on both sides of the convex ring 6, and a raised T-shaped positioning strip 12 is provided on the back of the sealing gasket 8. When the sealing gasket 8 is stretched, the positioning strip 12 is fitted into the positioning hole. This ensures the reliability of the sealing gasket 8 installation and the tightness of its contact with the convex ring 6. The maximum outer diameter of the convex ring 6 is larger than the inner diameter of the pin hole 2, with a difference of 0.5mm to 1mm.

Claims

1. A commercial vehicle caliper body pin hole water intrusion caliper characterized by: The clamp body (1) is provided with pin holes (2) on both the left and right sides of the clamp body (1), and a pin is installed in the pin holes (2); it also includes a dust cover (3), which covers the pin and is inserted into the pin hole (2); a sealing groove (4) is provided on the inner wall of the pin hole (2), and a sealing element (5) is fitted in the sealing groove (4). The dust cover (3) and the sealing element (5) are in close contact, and the sealing element (5) is in a squeezed state.

2. The commercial vehicle caliper body dowel hole water prevention caliper of claim 1, wherein: The sealing element (5) is an O-ring with a circular cross-section, and the inner diameter of the sealing ring is smaller than the outer diameter of the dust cover (3).

3. The commercial vehicle caliper body dowel hole water prevention caliper of claim 1, wherein: The sealing groove (4) is an annular groove with an arc-shaped cross section. The outer ring of the dust cover (3) is bent to form an outwardly protruding ring (6). The dust cover (3) forms a groove (7) on the inner side of the protruding ring (6). The sealing element (5) is a sealing gasket (8). The sealing gasket (8) is bonded to the outer surface of the protruding ring (6). After the dust cover (3) is pressed into the pin hole (2), the protruding ring (6) is inserted into the sealing groove (4). The dust cover (3) is uniformly provided with vertical deformation grooves (9) along its circumference. The deformation grooves (9) penetrate to the lower end of the dust cover (3) and pass through the protruding ring (6) at the upper end.

4. The service truck jaw body bushing hole water prevention clamp of claim 3, wherein: The dust cover (3) is a metal part with elastic deformation capability.

5. The commercial vehicle caliper body dowel hole water prevention caliper of claim 3, wherein: The two sides of the convex ring (6) are provided with strip-shaped fixing holes (10), and the back of the sealing gasket (8) is provided with a raised T-shaped positioning strip (12). When the sealing gasket (8) is stretched, the positioning strip (12) is assembled in the positioning hole.

6. The commercial vehicle caliper body dowel hole water shield caliper of claim 3, wherein: The maximum outer diameter of the convex ring (6) is greater than the inner diameter of the pin hole (2), with a difference of 0.5mm~1mm.

7. The commercial vehicle caliper body dowel hole water prevention caliper of claim 3, wherein: The upper end of the dust cover (3) is bent to form a limiting ring (11), which abuts against the upper surface of the pin hole (2).

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