Sand-proof plug for vent hole of engine water pump assembly of cross-country vehicle

Abstract

The utility model discloses a sand-proof plug for a vent hole of an engine water pump assembly of a cross-country vehicle and belongs to the technical field of engine cooling. A plurality of air leakage grooves are formed in the outer wall of the plug column, and each air leakage groove is formed in the axial direction of the plug column and penetrates through the inner end face and the outer end face of the plug column; the outer end face of the plug column is fixedly connected with the middle of a bowl-shaped buckled plug cap, the plug cap is arranged on the outer side of the air leakage hole in a covering mode, and the edge of the plug cap is tightly attached to the outer wall of the water pump shell. The outer wall of the plug column is fixedly connected with the multiple reinforcing pieces, and a deformation space is reserved between every two adjacent reinforcing pieces. And each reinforcing sheet is of an upright bowl-shaped structure. The inner end of the plug column is cone-shaped or hemispherical, and an auxiliary block is fixed at the outer end of the plug column. A through hole is formed in the middle of the auxiliary block. The plug column, the reinforcing piece, the plug cap and the auxiliary block are all made of flexible materials. According to the utility model, sand can be prevented from entering the deflation hole, so that the water pump assembly is protected from being damaged, and the normal deflation function of the deflation hole of the water pump assembly is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of off-road vehicle engine water pump assembly air release hole sand plug, belong to engine cooling technical field. BACKGROUND

[0002] Off-road vehicle driving condition involves sand and stone road, muddy road, wading road, desert and jungle and other complex terrain, its operating environment is significantly distinguished from urban paved road, there is a large amount of loose particulate matter and liquid medium interaction characteristics.

[0003] The air release hole of the existing off-road vehicle engine water pump assembly generally adopts open structure design, without configuring targeted protection device. When the vehicle runs in specific conditions such as sand and stone road, if the water pump pulley does not have sufficient structural wrapping, external sand dust is easy to invade the water pump cavity through the air release hole, and the sand dust particles and rotating parts will cooperate to accelerate the wear of the water seal lip, resulting in sealing failure. Cooling liquid leakage failure is easy to cause, which seriously affects the thermal management efficiency of power system. SUMMARY

[0004] To solve the problems in the background art, the utility model provides a kind of off-road vehicle engine water pump assembly air release hole sand plug.

[0005] To achieve the above purpose, the utility model takes the following technical scheme: a kind of off-road vehicle engine water pump assembly air release hole sand plug, including plug post and plug cap;The plug post is air release hole random structure, and the outer wall of the plug post is provided with a plurality of air release grooves, each air release groove is arranged along the axial direction of the plug post and each air release groove penetrates the inner and outer end faces of the plug post;The outer end face of the plug post is fixedly connected with the middle part of the bowl-shaped buckle plug cap, the plug cap is buckled on the outer side of the air release hole, and the edge of the plug cap is tightly combined with the outer wall of the water pump shell.

[0006] The outer wall of the plug post is fixedly connected with a plurality of reinforcing sheets, and a deformation space is left between each adjacent two reinforcing sheets.

[0007] Each reinforcing sheet is a positive bowl-shaped structure.

[0008] The inner end of the plug post is a cone or a hemisphere.

[0009] The outer end of the plug cap is fixed with an auxiliary block.

[0010] The middle part of the auxiliary block is provided with a through hole.

[0011] The plug post, reinforcing sheet, plug cap and auxiliary block are integrally formed.

[0012] The plug post, reinforcing sheet, plug cap and auxiliary block are all flexible materials.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention effectively prevents sand from entering the vent hole, protecting the water pump assembly from damage, without affecting the normal venting function of the vent hole. It is also sturdy and durable, with a wide temperature range (-40°C to 120°C), long service life, low cost (including labor costs, the total cost per unit is only about 0.5-0.7 yuan), easy to install, and performs well. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 The main view;

[0017] Figure 3 yes Figure 1 Side view;

[0018] Figure 4 yes Figure 1 A sectional view. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] A sand plug for the vent hole of an off-road vehicle engine water pump assembly includes a plug plunger 1 and a plug cap 5. The plug plunger 1 is a conformal structure to the vent hole and is interference-fitted to the vent hole. The outer wall of the plug plunger 1 is evenly provided with multiple vent grooves 2 along its circumference. Each vent groove 2 is arranged along the axial direction of the plug plunger 1 and each vent groove 2 penetrates the inner and outer end faces of the plug plunger 1. The outer end face of the plug plunger 1 is integrally formed and fixedly connected to the middle of the cup-shaped plug cap 5. The plug cap 5 is fastened to the outside of the vent hole, and the edge of the plug cap 5 is tightly fitted to the outer wall of the water pump housing. The cup shape creates an air passage space between the plug cap 5 and the water pump housing.

[0021] The outer wall of the plunger 1 is integrally formed and fixedly connected with a plurality of reinforcing plates 3 evenly distributed along its axial direction. A deformation space 4 is left between each two adjacent reinforcing plates 3. Through the deformation of the reinforcing plates 3, the contact area between the plunger 1 and the inner wall of the vent hole is increased, thereby improving the stability of the plunger 1 in use.

[0022] Each of the reinforcing plates 3 is an upright bowl-shaped structure.

[0023] The inner end of the plunger 1 is cone-shaped or hemispherical to facilitate easy installation.

[0024] The outer end of the plug 5 is integrally formed with an auxiliary block 6, which facilitates the installation and disassembly of this utility model.

[0025] The auxiliary block 6 has a through hole 7 in the middle, which reduces the use of materials and saves production costs.

[0026] The plug 1, reinforcing plate 3, plug cap 5, and auxiliary block 6 are integrally formed.

[0027] The plug 1, reinforcing plate 3, plug cap 5, and auxiliary block 6 are all made of flexible materials, such as nylon, rubber, and silicone.

[0028] During installation, the plunger 1 is pressed into the vent hole of the water pump assembly with an interference fit until the cap 5 seals the upper edge of the vent hole. During operation, internal gas flows into the air passage space inside the cap 5 through multiple vent grooves 2, and then flows out between the cap 5 and the water pump housing. This not only prevents sand from entering the vent hole, thus protecting the water pump assembly from damage, but also does not affect the normal venting function of the water pump assembly's vent hole.

[0029] After installing this invention at the vent of the water pump assembly, a pull-out force test of 4.2kN and a blowing test were conducted under 600kPa air pressure. The invention did not detach, proving that even when installed on an off-road vehicle, it will not easily fall off under harsh road conditions. Furthermore, this invention is already used in the N20TG-X3 engine and has undergone bench and road testing. This invention effectively blocks sand, enabling driving on harsh road conditions such as deserts and muddy terrain.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly, characterized in that: It includes a plunger (1) and a plug cap (5); the plunger (1) has a vent hole conformal structure, and the outer wall of the plunger (1) is provided with multiple vent grooves (2), each of the vent grooves (2) is arranged along the axial direction of the plunger (1) and each vent groove (2) penetrates the inner and outer end faces of the plunger (1); the outer end face of the plunger (1) is fixedly connected to the middle of the bowl-shaped plug cap (5), the plug cap (5) is covered and fastened on the outside of the vent hole, and the edge of the plug cap (5) is tightly fitted to the outer wall of the water pump housing.

2. The sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 1, characterized in that: The outer wall of the plunger (1) is fixedly connected to a plurality of reinforcing plates (3), and a deformation space (4) is left between each two adjacent reinforcing plates (3).

3. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 2, characterized in that: Each of the reinforcing plates (3) is an upright bowl-shaped structure.

4. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 3, characterized in that: The inner end of the plug (1) is cone-shaped or hemispherical.

5. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 1 or 4, characterized in that: An auxiliary block (6) is fixed to the outer end of the plug (5).

6. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 5, characterized in that: The auxiliary block (6) has a through hole (7) in the middle.

7. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 6, characterized in that: The plug (1), reinforcing plate (3), plug cap (5) and auxiliary block (6) are integrally formed.

8. A sand-proof plug for the vent hole of an off-road vehicle engine water pump assembly according to claim 6, characterized in that: The plug (1), reinforcing plate (3), plug cap (5) and auxiliary block (6) are all made of flexible material.

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