Waterproof sealing type bolt

Abstract

The utility model discloses a waterproof sealing type bolt which comprises a bolt body, the bolt body is composed of a nut end and a screw rod end, a containing groove is annularly formed in the bottom wall of the nut end, and a sealing gasket is arranged in the containing groove in an expansion fit mode. And a driving piece which is used for self-adaptively deforming under a high-temperature working condition, applying an acting force to the sealing gasket to enable the sealing gasket to deform and enabling the bottom wall of the sealing gasket to be in expansion fit with the outer wall of an external tool is arranged in the accommodating groove. The problems that a seam between a traditional bolt and an external tool is affected by external stress or the bolt is presbyopic, so that the seam is enlarged, and external impurities are likely to intrude into the tool through the seam are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a waterproof sealing bolt. Background Art

[0002] When a traditional bolt is connected to a pre-buried hole thread on an external tooling, the screw end of the bolt cooperates with the thread of the wall of the pre-buried hole, while the bottom wall of the nut end of the bolt is buckled on the external tooling. When the external tooling vibrates during operation or the bolt is subjected to external stress impact, the bolt will vibrate accordingly. Under long-term vibration, the joint between the bottom wall of the nut end of the bolt and the external tooling will gradually expand, causing external water, dust and other impurities to invade the pre-buried hole through the joint, and then invade the interior of the tooling through the pre-buried hole, thereby causing the internal components of the tooling to be affected by the invasion of impurities such as water or dust. In particular, equipment or tooling used under high temperature conditions will generate a lot of heat during operation or the surrounding temperature conditions are high. To avoid overheating of the equipment or tooling, the operator will spray water mist through an atomizing nozzle or other tooling to avoid overheating of the equipment or tooling and reduce the surrounding temperature of the equipment. However, when the water mist is sprayed, the Yicong joint enters the embedded hole, thereby causing the water mist to invade the interior of the tooling. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a waterproof sealed bolt to solve the problems that the joints between traditional bolts and external tooling are affected by external stress or the joints are enlarged due to bolt aging, and that external water stains or water mist easily invade the interior of the tooling through the joints under high temperature conditions.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a waterproof sealing bolt, including a bolt, wherein the bolt is composed of a nut end and a screw end, a groove is circumferentially opened on the bottom wall of the nut end, a sealing gasket is expansion-fitted in the groove, and a driving member is provided in the groove for adaptively deforming under high temperature conditions and applying force to the sealing gasket to deform the sealing gasket and make the bottom wall of the sealing gasket expansion-fit with the outer wall of the external tooling.

[0005] The benefits of adopting the above technical solution are: in the above technology, after the bolt is threadedly connected to the embedded hole on the external tooling, the driving part adaptively deforms and applies force to the sealing gasket under high temperature conditions, causing the sealing gasket to deform and the bottom wall of the sealing gasket to expand and fit with the external tooling, thereby eliminating the joint between the bolt nut end and the external tooling, thereby avoiding the external water mist from invading the embedded hole of the external tooling through the joint when the manufacturer or operator lowers the temperature by spraying water mist under high temperature conditions, thereby avoiding the water mist from invading the inside of the tooling through the embedded hole and affecting the components inside the tooling; in the above technology, the cooperation between the driving part and the sealing gasket improves the sealing strength and connection strength between the nut end and the outer wall of the external tooling, thereby eliminating the joint between the two, thereby avoiding external impurities from invading the embedded hole through the joint.

[0006] The utility model is further arranged that: the driving member includes a deformable ring arranged in the containing groove, the radial cross-section of the deformable ring is arranged in an arc shape, the deformable ring is composed of two side parts and a raised part, the deformable ring is made of shape memory alloy material, the deformable ring has a first form in a first temperature range, and the deformable ring has a second form in a second temperature range, the raised part of the deformable ring is arranged toward the bottom wall of the containing groove in the first form, and the deformable ring is deformed in the second form so that the raised part of the deformable ring is raised toward the sealing gasket and is abutted and matched with the top wall of the sealing gasket.

[0007] The above technical solution is beneficial in that: under high temperature conditions, that is, when the temperature is above 30 degrees, the temperature range is the second temperature range, and when the temperature is below 30 degrees, the temperature range is the first temperature range. The deformation ring is made of shape memory alloy material, and the deformation ring has a second form in the second temperature range, that is, the bulge of the deformation ring bulges toward the sealing gasket under high temperature conditions and is abutted against the top wall of the sealing gasket, so that the deformation ring applies a force to the sealing gasket and locally deforms the sealing gasket, and the sealing gasket abuts against the outer wall of the external tooling, thereby achieving sealing between the bolt nut end and the outer wall of the external tooling, thereby improving the sealing strength and eliminating In addition to the joints, this prevents external water mist from invading the embedded holes of the external tooling through the joints when the manufacturer or operator lowers the temperature by spraying water mist under high temperature conditions, thereby preventing water mist from invading the inside of the tooling through the embedded holes and affecting the components inside the tooling; under non-high temperature conditions or before the bolts are installed, the deformation ring has a first form within the first temperature range, and the bulge of the deformation ring is arranged toward the bottom wall of the groove in the first form, that is, the deformation ring does not apply a force to the sealing gasket, so that the sealing gasket does not pass through the groove to facilitate the disassembly and assembly of the bolts; shape memory alloy in the above technology is a prior art, so its structure, function and principle will not be described in detail.

[0008] The utility model is further provided that: the two side parts of the deformation ring are respectively connected to the inner walls of the two side walls of the containing groove through a bonding process.

[0009] The benefit of adopting the above technical solution is that: in the above technology, the two sides of the deformation ring are respectively connected to the inner walls of the two sides of the groove through a bonding process, so as to improve the connection strength between the deformation ring and the groove.

[0010] The utility model is further configured as follows: both side walls of the sealing pad are provided with limiting pads in an annular direction, both side walls of the containing groove are provided with limiting grooves in an annular direction, and the two limiting pads correspond to the two limiting grooves one by one and are plug-fittedly arranged.

[0011] The benefit of adopting the above technical solution is that the cooperation between the limiting pad and the limiting groove in the above technology improves the connection strength between the sealing pad and the receiving groove, thereby preventing the sealing pad from falling out of the receiving groove when the sealing pad is deformed by the force applied by the deformation ring.

[0012] The utility model is further configured as follows: the sealing pad is made of elastic rubber material, a plurality of sealing lines are provided on the bottom wall of the sealing pad, and the gaps between adjacent sealing lines are configured to be the same.

[0013] The advantages of adopting the above technical solution are: in the above technology, the sealing gasket is made of elastic rubber material, thereby improving the sealing strength and wear resistance between the sealing gasket and external tooling, and the setting of the sealing pattern further improves the wear resistance and the sealing strength with external tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a simplified cross-sectional view of the utility model when not in high temperature working condition;

[0015] Figure 2 It is a simplified cross-sectional view of the utility model under high temperature conditions. DETAILED DESCRIPTION

[0016] The utility model provides a waterproof sealing bolt 1, comprising a bolt 1, wherein the bolt 1 is composed of a nut end 11 and a screw end 12, a groove 13 is annularly provided on the bottom wall of the nut end 11, a sealing gasket 2 is expansion-fitted in the groove 13, a driving member for adaptively deforming and applying a force to the sealing gasket 2 under high temperature conditions to deform the sealing gasket 2 and to make the bottom wall of the sealing gasket 2 expand and fit with the outer wall of an external tooling, the driving member comprises a deformation ring 3 arranged in the groove 13, the radial cross section of the deformation ring 3 is arranged in an arc shape, the deformation ring 3 is composed of two side portions 31 and a raised portion 32, the deformation ring 3 is made of a shape memory alloy material, the deformation ring 3 has a first form in a first temperature range, and the deformation ring The second form exists in the second temperature range. The bulge 32 of the deformable ring 3 is arranged toward the bottom wall of the groove 13 in the first form. The deformable ring 3 is deformed in the second form so that the bulge 32 of the deformable ring 3 bulges toward the sealing gasket 2 and is abutted against the top wall of the sealing gasket 2. The two side parts 31 of the deformable ring 3 are respectively connected with the inner walls of the two sides of the groove 13 through a bonding process. The two side walls of the sealing gasket 2 are annularly provided with limiting pads 21. The two side walls of the groove 13 are annularly provided with limiting grooves 14. The two limiting pads 21 correspond to the two limiting grooves 14 one by one and are plug-matched. The sealing gasket 2 is made of elastic rubber material. The bottom wall of the sealing gasket 2 is provided with a plurality of sealing lines, and the gaps between adjacent sealing lines are set to be the same.

[0017] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A waterproof sealing bolt, characterized in that: It includes a bolt, which consists of a nut end and a screw end. A groove is circumferentially opened on the bottom wall of the nut end. A sealing gasket is expansion-fitted in the groove. A driving member is provided in the groove for adaptively deforming under high-temperature conditions and applying force to the sealing gasket to deform the sealing gasket and to make the bottom wall of the sealing gasket expand and fit with the outer wall of the external tooling.

2. A waterproof sealing bolt according to claim 1, characterized in that: The driving member includes a deformable ring arranged in the groove, the radial cross-section of the deformable ring is arranged in an arc shape, the deformable ring is composed of two side parts and a raised part, the deformable ring is made of shape memory alloy material, the deformable ring has a first form in a first temperature range, and the deformable ring has a second form in a second temperature range. In the first form, the raised part of the deformable ring is arranged toward the bottom wall of the groove, and in the second form, the deformable ring is deformed so that the raised part of the deformable ring is raised toward the sealing gasket and is abutted and matched with the top wall of the sealing gasket.

3. A waterproof sealing bolt according to claim 2, characterized in that: The two side portions of the deformation ring are respectively connected to the inner walls of the two side portions of the containing groove by a bonding process.

4. The waterproof sealing bolt according to claim 1, characterized in that: The two side walls of the sealing pad are both circumferentially provided with limiting pads, and the two side walls of the containing groove are both circumferentially provided with limiting grooves, and the two limiting pads correspond to the two limiting grooves one by one and are plug-fittedly arranged.

5. The waterproof sealing bolt according to claim 1, characterized in that: The sealing pad is made of elastic rubber material, and a plurality of sealing lines are provided on the bottom wall of the sealing pad, and the gaps between adjacent sealing lines are arranged to be the same.

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