Waterproof structure for sheet metal mounting hole

Abstract

The utility model provides a waterproof structure for a metal plate mounting hole, which belongs to the technical field of waterproof nuts, and aims to solve the problems that the traditional edge is randomly tired, and can generate cold and hot deformation and durable deformation according to the change of environment temperature, the waterproof structure comprises a sleeve and a self-tapping screw, the top of the sleeve is provided with a supporting sheet, and the edge of the supporting sheet is provided with an O-shaped ring in a clamping manner; the casing pipe is clamped in a metal plate hole with a square hole, the casing pipe is covered with the rear mounting cover, a boss column hole is formed in the casing pipe, the self-tapping screw penetrates through the rear mounting cover to be arranged in the boss column hole in a penetrating mode, and the O-shaped ring is connected between the rear mounting cover and the metal plate in an abutting mode. The O-shaped ring is compressed to generate elastic deformation through two-side clamping of the rear mounting cover and the metal plate, tension extrusion sealing is formed, and the sealing device is more durable than single-side bending compression.

Description

TECHNICAL FIELD

[0001] The utility model belongs to nut waterproof technical field, more specifically, especially relate to a waterproof structure for sheet metal mounting hole. BACKGROUND

[0002] New energy vehicles are developing rapidly, and new energy vehicles mainly include electric vehicles, including battery systems, motors, electronic control systems, and charging interfaces and other parts. These parts need to be waterproofed when in a humid environment or when wading, otherwise it will affect safety and service life.

[0003] Waterproof nuts are essential in new energy vehicles, mainly because they have moisture-proof, corrosion-resistant and sealing properties to ensure the reliability and safety of critical components in complex environments. Traditional nut waterproofing is edge type, relying on single-sided bending deformation to compress and seal, but traditional edges can randomly fatigue, and can produce cold and hot deformation according to changes in environmental temperature, and durable deformation.

[0004] Therefore, in view of the above, the existing structure and deficiencies are studied and improved, and a waterproof structure for sheet metal mounting hole is provided to achieve a more practical value. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a waterproof structure for sheet metal mounting hole to solve the problem that the traditional edge can randomly fatigue and produce cold and hot deformation according to changes in environmental temperature.

[0006] The purpose and effect of the waterproof structure for sheet metal mounting hole are achieved by the following specific technical means:

[0007] A waterproof structure for sheet metal mounting hole, comprising a sleeve and a self-tapping screw, the sleeve top is provided with a support piece, the support piece edge is provided with an O-shaped ring, the sleeve is clamped in the sheet metal hole with a square hole, the sleeve is covered with a rear cover, the sleeve is provided with a boss hole, the self-tapping screw is clamped in the boss hole through the rear cover, and the O-shaped ring is abutted between the rear cover and the sheet metal.

[0008] Further, a metal flat washer is provided between the self-tapping screw and the rear cover, and the metal flat washer is clamped on the self-tapping screw.

[0009] Further, two functional grooves are provided on both sides of the sleeve, and a clamping block is provided in each functional groove.

[0010] Further, two grooves are provided on the inner wall of the boss hole.

[0011] Further, the rear cover is provided with a mounting via hole, and the self-tapping screw passes through the mounting via hole, and the diameter of the mounting via hole is larger than the diameter of the self-tapping screw.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The sleeve is clamped into the square hole of the metal plate, the metal plate can be a waterproof part shell on a new energy vehicle, the self-tapping screw is close to the boss column hole, the rear cover and the metal plate are clamped, the O-shaped ring clamped on the supporting piece is compressed, the O-shaped ring is elastically deformed, the O-shaped ring forms a tension, and a sealing space is formed by extruding the metal plate and the rear cover, which is more durable than single-side bending and compression. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of a waterproof structure for a metal plate mounting hole of the utility model.

[0015] Figure 2 is a side sectional view of a waterproof structure for a metal plate mounting hole of the utility model.

[0016] Figure 3 is a partial structure schematic view of a waterproof structure for a metal plate mounting hole of the utility model.

[0017] Figure 4 is a partial structure side view of a waterproof structure for a metal plate mounting hole of the utility model.

[0018] In the drawings, the correspondence between the component names and the drawing numbers is as follows:

[0019] 1, sleeve; 2, self-tapping screw; 3, supporting piece; 4, O-shaped ring; 5, metal plate; 6, rear cover; 7, boss column hole; 8, metal flat washer; 9, groove; 10, mounting via hole; 101, functional groove; 102, clamping block. DETAILED DESCRIPTION

[0020] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0021] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicative or suggestive of relative importance.

[0022] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Embodiment:

[0024] As shown in the accompanying Figure 1 to the accompanying Figure 4 As shown:

[0025] The utility model provides a waterproof structure for sheet metal mounting hole, including sleeve 1 and self tapping screw 2, sleeve 1 top sets up support sheet 3, and support sheet 3 edge sets up O type ring 4, sleeve 1 sets up in the sheet metal 5 that hits square hole, and the sheet metal 5 can be the shell of any need waterproof and moistureproof component on new energy vehicle.

[0026] Among them, two functional grooves 101 are oppositely arranged on the sleeve 1, and clamping blocks 102 are respectively arranged in the functional grooves 101, after the sleeve 1 is inserted into the square hole, the clamping blocks 102 can abut against the sheet metal 5, so as to limit the sleeve 1, so that the sleeve 1 is always below the sheet metal 5.

[0027] The sleeve 1 is covered by the rear cover 6, the boss hole 7 is formed in the sleeve 1, the self tapping screw 2 is inserted into the boss hole 7 through the rear cover 6, the self tapping screw 2 can bite the wall of the boss hole 7 when hitting into the sleeve 1, to prevent the self tapping screw 2 from loosening, the hole depth of the boss hole 7 is longer than the length of the self tapping screw 2, which can adapt to longer self tapping screw 2, and the O type ring 4 is abutted between the rear cover 6 and the sheet metal 5.

[0028] The metal flat washer 8 is arranged between the self-tapping screw 2 and the rear cover 6, the metal flat washer 8 is sleeved on the self-tapping screw 2, the metal flat washer 8 can protect the self-tapping screw 2 and the rear cover 6, the friction between the self-tapping screw 2 and the rear cover 6 is prevented from being too large to damage the rear cover 6, and the service life of the rear cover 6 and the self-tapping screw 2 is prolonged.

[0029] The mounting through hole 10 is arranged on the rear cover 6, the self-tapping screw 2 passes through the mounting through hole 10, and the mounting through hole 10 has a slightly larger hole diameter than the self-tapping screw 2; in this way, the design can avoid the phenomena of slag accumulation and misplacement in the drilling process of the self-tapping screw 2, ensures that the self-tapping screw 2 can pass through smoothly, and avoids assembly friction or part misplacement.

[0030] The two grooves 9 are oppositely arranged in the boss column hole 7, and the grooves 9 are used for collecting and storing the debris generated when the self-tapping screw 2 is screwed into the sleeve 1.

[0031] In use, the sleeve 1 is inserted into the shell of a part that needs to be waterproofed, represented by the sheet metal 5 in the figure, the O-shaped ring 4 is sleeved, the rear cover 6 is covered, the metal flat washer 8 is padded, the self-tapping screw 2 passes through the mounting through hole 10 of the metal flat washer 8 and the rear cover 6, the self-tapping screw 2 is drilled into the boss column hole 7 of the sleeve 1 by using a pneumatic screwdriver, the self-tapping screw 2 is drilled downward, the rear cover 6 is driven to move downward, the sleeve 1 is limited to move upward by the clamping block 102, and the sheet metal 5 is pressed, so that the rear cover 6 and the sheet metal 5 press the O-shaped ring 4 on both sides at the same time, until the rear cover 6 is attached to the sheet metal 5, and water below the sheet metal 5 can only penetrate into the sealed space formed by the sheet metal 5, the sleeve 1, the supporting sheet 3 and the O-shaped ring 4, thereby achieving the waterproof effect.

[0032] The embodiments of the utility model are given for the purpose of example and description, and are not exhaustive or limit the utility model to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the utility model, and enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A waterproof structure for sheet metal mounting holes, characterized in that: Includes a sleeve (1) and a self-tapping screw (2). A support plate (3) is provided on the top of the sleeve (1). An O-ring (4) is attached to the edge of the support plate (3). The sleeve (1) is attached to a sheet metal (5) with a square hole. A rear cover (6) is covered on the sleeve (1). A boss hole (7) is opened in the sleeve (1). The self-tapping screw (2) passes through the rear cover (6) and is inserted into the boss hole (7). The O-ring (4) abuts between the rear cover (6) and the sheet metal (5).

2. A waterproof structure for sheet metal mounting holes as described in claim 1, characterized in that: A metal flat washer (8) is provided between the self-tapping screw (2) and the rear cover (6), and the metal flat washer (8) is fitted on the self-tapping screw (2).

3. A waterproof structure for sheet metal mounting holes as described in claim 1, characterized in that: The sleeve (1) has two opposing functional slots (101) on both sides, and each functional slot (101) is provided with a locking block (102).

4. A waterproof structure for sheet metal mounting holes as described in claim 1, characterized in that: The inner wall of the boss post hole (7) has two opposing grooves (9).

5. A waterproof structure for sheet metal mounting holes as described in claim 1, characterized in that: The rear cover (6) has an installation through hole (10) through which a self-tapping screw (2) passes. The diameter of the installation through hole (10) is larger than the diameter of the self-tapping screw (2).

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