Sealing structure capable of being quickly disassembled and assembled, disassembling and assembling tool and machining tool

Abstract

The invention discloses a sealing structure capable of being quickly disassembled and assembled, which belongs to the technical field of sealing and waterproofing, and comprises a blanking cap arranged corresponding to an access hole in a main body supporting bracket, a counter bore is formed in the outer side of the manhole, an annular boss is arranged on the inner side of the manhole, two centrosymmetric spiral gradual change steps are arranged on the end face of the annular boss along the circumference of the manhole, receding grooves are formed in the positions, corresponding to the lowest points of the two spiral gradual change steps, of the inner wall of the manhole, and the two receding grooves are symmetrically formed; a columnar boss is arranged on the inner side of the blanking cap, and a sealing ring is arranged on a step surface on the periphery of the columnar boss; and two symmetrical locking bulges are arranged on the cylindrical surface of the columnar boss. The invention further discloses a corresponding disassembling and assembling tool and a corresponding machining tool. Sealing is achieved in the mode that the boss of the blanking cap rotates along the spiral step for self-locking, disassembly and assembly of the blanking cap can be conveniently and rapidly completed through a disassembly and assembly tool, and the sealing performance of a product can be guaranteed when the blanking cap and the appearance of the support are integrally machined through the machining tool.

Description

Technical Field

[0001] This invention belongs to the field of sealing and waterproofing technology, specifically relating to a quick-disassembly sealing structure, disassembly and assembly tools, and processing fixtures. Background Technology

[0002] Products requiring rain protection often need to have inspection holes and covers to seal them, facilitating regular inspection and observation. Figure 1 and Figure 2 Taking the product shown as an example, the external structure of the product includes a bracket 100, a plug 200, and a shell 300. A sealing strip is glued to the inner edge of the shell 300 to achieve a seal by fitting the outer shape of the bracket 100. Inspection holes are provided on the bracket 100 at the joints of two adjacent shells 300. A frustum is provided on the inner side of the plug 200 to cooperate with the inspection holes for positioning, and it is screwed onto the bracket 100 by fasteners. The shape of the plug 200 is machined to fit the bracket 100.

[0003] In this existing sealing structure, gaps exist between the plug 200 and the bracket 100, as well as between the fastener and the bracket 100, posing a risk of water leakage and affecting the internal electrical environment of the product. Furthermore, the smooth surface of the plug 200 makes it difficult to clamp, resulting in inconvenient disassembly, low disassembly and assembly efficiency, and it is prone to falling off during operation, which can cause quality problems due to impacts or other reasons. Summary of the Invention

[0004] To address one or more of the above-mentioned defects or improvement needs in the prior art, this invention provides a quick-release sealing structure, disassembly and assembly tools, and processing fixtures. The sealing is achieved by the self-locking mechanism of the plug boss rotating along the spiral steps. The disassembly and assembly tools allow for convenient and quick disassembly and assembly of the plug. The processing fixtures fix the plug, ensuring the overall integrity of the bracket's shape while maintaining the product's sealing performance during the overall machining process with the bracket.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a quick-release sealing structure is provided, including a plug provided with a corresponding inspection hole on the main support bracket; The inspection hole has a countersunk hole on the outside and an annular boss on the inside. Two centrally symmetrical spiral gradient steps are formed on the end face of the annular boss along the circumference of the inspection hole. The inner wall of the inspection hole is provided with relief grooves corresponding to the lowest points of the two spiral gradient steps, and the two relief grooves are symmetrically arranged. The inner side of the plug is provided with a columnar boss, and a sealing ring is provided on the stepped surface of the outer periphery of the columnar boss; two symmetrical locking protrusions are provided on the cylindrical surface of the columnar boss; the locking protrusions can extend into the inspection hole from the clearance groove of the inspection hole, and rotate along the spiral gradient step to the limiting step, while pressing the sealing ring into the countersunk hole on the outside of the inspection hole to achieve rotational self-locking.

[0006] As a further improvement of the present invention, the two spiral gradient steps are two centrally symmetrical 1 / 4 segments arranged along the circumference of the inspection hole, that is, the rotation angle of the locking protrusion is 90°.

[0007] As a further improvement of the present invention, the outer side of the plug is provided with two blind holes for plug removal and installation, one of which is a smooth hole and the other is a threaded hole.

[0008] According to a second aspect of the present invention, a disassembly and assembly tool is provided for disassembling and assembling the plug in the sealing structure, the disassembly and assembly tool comprising a chassis, a pin, a screw, and a rotary handle; The chassis has two through holes for installing a pin and a screw, respectively. The two through holes on the chassis correspond to the two blind holes on the plug. The pin on the chassis is used to insert into the open hole on the plug, and the screw on the chassis is used to insert into the threaded hole on the plug and thread it. The chassis is also provided with a rotary handle for rotating the plug.

[0009] As a further improvement of the present invention, the rotary handle is located in the middle of the chassis, and the through holes on the chassis are correspondingly located on both sides of the rotary handle.

[0010] According to a third aspect of the present invention, a processing fixture is provided for use in the sealing structure, including a process cover plate, a limiting member, a fastener, and an anti-rotation washer. The process cover plate is provided with a first through hole and a second through hole. The first through hole is used to install fasteners, and the second through hole is used to install limiting components. The end face of the annular boss is provided with a process thread hole corresponding to the first through hole, which is used to install the process cover plate through the fasteners. The limiting component is provided with a columnar boss corresponding to the plug, which is used to abut against the end face of the columnar boss of the plug after tightening. The anti-rotation washer is placed in the groove formed by the locking protrusion and the spiral gradient step. When the locking protrusion rotates to the limit step, the anti-rotation washer is consistent with the shape of the groove formed by the locking protrusion and the spiral gradient step.

[0011] As a further improvement of the present invention, the inner side of the process cover plate is provided with a relief groove, the diameter of which is larger than the diameter of the annular boss.

[0012] As a further improvement of the present invention, the limiting member includes a limiting screw and a locking nut.

[0013] In summary, the technical solutions conceived by this invention have the following beneficial effects compared with the prior art: (1) The present invention adopts a locking method in which the plug protrusion rotates and locks itself along the spiral steps to achieve sealing. The plug can be easily and quickly disassembled and assembled using disassembly and assembly tools, which improves disassembly and assembly efficiency and solves the problem of inconvenient disassembly.

[0014] (2) The disassembly and assembly tool of the present invention achieves positioning during disassembly and assembly through the pin and the light hole on the plug, achieves stable connection during disassembly and assembly through the screw and the threaded hole on the plug, and achieves the rotational movement of the plug during disassembly and assembly through the rotary handle, thereby improving the disassembly efficiency and solving the problem of the plug easily falling off.

[0015] (3) By using machining fixtures, this invention avoids the influence of tooling assembly and machining cutting forces on the outer surfaces of the plug and the main support bracket during the machining of the sealing ring. This ensures that the clamping amount of the sealing ring after machining is consistent with the compression amount during the formal assembly of the plug, thereby safely and stably fixing the plug to the main support bracket. It also avoids machining defects caused by the instability of the sealing ring in conventional assembly, such as the plug protruding or retracting into the bracket. The machining fixtures of this invention achieve integrated machining of the plug and the main support bracket, ensuring the matching of the product's shape. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of an existing product; Figure 2 A schematic diagram of the plug structure of an existing product; Figure 3 This is a schematic diagram of the external structure of the product according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the sealing structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of the sealing structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the disassembly and assembly tool structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the disassembly and assembly tools according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the machining tooling structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the installation of the processing tooling according to an embodiment of the present invention.

[0017] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Main support bracket; 2. End cap; 3. Shell plate; 4. Annular boss; 5. Helical gradient step; 6. Relief groove; 7. Columnar boss; 8. Sealing ring; 9. Chassis; 10. Pin; 11. Screw; 12. Rotary handle; 13. Process cover plate; 14. Limit screw; 15. Fastener; 16. Anti-rotation washer; 17. Process threaded hole; 18. Locking protrusion; 19. Relief groove; 20. Limit step. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] See Figures 3 to 5 The quick-release sealing structure of this invention includes a plug 2 corresponding to the inspection hole on the main support bracket 1. The inspection hole has a countersunk hole on the outer side and an annular boss 4 on the inner side. Two centrally symmetrical spiral gradient steps 5 are formed on the end face of the annular boss 4 along the circumference of the inspection hole. The inner wall of the inspection hole is provided with relief grooves 6 at the lowest point (rotation start position) of the two spiral gradient steps 5, and the two relief grooves 6 are symmetrically arranged.

[0024] Furthermore, the inner side of the plug 2 is provided with a columnar boss 7, and a sealing groove is formed on the stepped surface of the outer periphery of the columnar boss 7 for installing a sealing ring 8. The sealing ring 8 is preferably installed in the sealing groove after being coated with grease. Two symmetrical locking protrusions 18 are provided on the cylindrical surface of the columnar boss 7.

[0025] like Figure 5 As shown, the columnar boss 7 matches the inspection hole, and the locking protrusion 18 matches the relief groove 6. During assembly of the plug 2, the locking protrusion 18 on the plug 2 extends into the inspection hole from the relief groove 6 and rotates along the spiral gradient step 5 to the limiting step 20 (the stop end of the spiral gradient step 5), achieving rotational self-locking between the plug 2 and the inspection hole contact surface, thus completing the assembly of the plug 2. During assembly, the sealing ring 8 is gradually pressed into the countersunk hole outside the inspection hole, thus achieving a dual function of sealing and friction-based anti-loosening. Conversely, rotating in the opposite direction allows for the removal of the plug 2.

[0026] In a preferred embodiment, the two helical gradient steps 5 are two centrally symmetrical 1 / 4 segments arranged along the circumference of the inspection hole, i.e., the rotation angle of the locking protrusion 18 is 90°. More preferably, in the specific embodiment shown in the figure, the helix angle of the helical gradient step 5 is set to λ = 1°40'.

[0027] In a preferred embodiment, the sealing ring 8 is an O-ring with a height compression of 13% to 25%. The O-ring achieves sealing and friction-resistant anti-loosening of the product, and the compression is stable. Furthermore, this compression can match the helix angle of the spiral gradient step 5, achieving effective sealing of the plug.

[0028] See again Figure 3 The outer side of the plug 2 is provided with two blind holes for disassembling and assembling the plug 2, one of which is a smooth hole and the other is a threaded hole.

[0029] Furthermore, such as Figure 6 and Figure 7 As shown, this embodiment of the invention also provides a disassembly and assembly tool for disassembling and installing the aforementioned plug 2. The tool includes a base 9, a pin 10, a screw 11, and a rotary handle 12. The base 9 has two through holes for installing the pin 10 and the screw 11, respectively. The two through holes on the base 9 correspond to the two blind holes of the plug 2. The pin 10 on the base 9 is inserted into the open hole on the plug 2, serving a positioning function during disassembly and assembly. The screw 11 on the base 9 is inserted into the threaded hole on the plug 2 for threaded connection, ensuring a stable connection between the base 9 and the plug 2 during disassembly and assembly. The base 9 also has a rotary handle 12 for rotating the plug 2 during disassembly and assembly.

[0030] In a preferred embodiment of the present invention, the rotary handle 12 is located in the middle of the chassis 9, and the through holes on the chassis 9 are correspondingly located on both sides of the rotary handle 12. More preferably, the rotary handle 12 is a two-bar linkage structure connected by a pin, but the present invention is not limited to the specific structure shown in the drawings; any structure capable of enabling the rotation of the plug 2 is within the scope of protection of the present invention.

[0031] In this embodiment of the invention, the installation and disassembly process using the disassembly and assembly tools is as follows: When installing the plug 2 onto the main support bracket 1, first insert the pin 10 on the disassembly tool into the smooth hole of the plug 2 for positioning; simultaneously, insert the screw 11 on the disassembly tool into the threaded hole of the plug 2, and rotate the screw 11 to screw it into the threaded hole of the plug 2 and fix it there. Insert the locking protrusion 18 on the plug 2 into the inspection hole through the relief groove 6, and turn the rotary handle 12 on the disassembly tool to rotate the plug 2 to the limiting step 20 of the spiral gradient step 5 (the stop end of the spiral gradient step 5), completing the assembly of the plug 2. Reverse rotation of the screw 11 allows the disassembly tool to be removed. Similarly, when removing the plug 2 from the main support bracket 1, insert the pin 10 into the smooth hole of the plug 2, and simultaneously screw the screw 11 into the threaded hole of the plug 2 and fix it there. Reverse rotation of the rotary handle 12 allows the plug 2 to be removed.

[0032] This invention, through a disassembly and assembly tool that matches the plug, enables positioning during disassembly and assembly via a pin and a light hole on the plug, stable connection via a screw and a threaded hole on the plug, and rotation of the plug via a rotary handle, thereby improving disassembly efficiency and solving the problem of the plug easily falling off.

[0033] Furthermore, after the plug 2 is assembled on the main support bracket 1, the plug 2 and the main support bracket 1 need to be machined together on their outer surfaces to ensure that the outer surface of the plug 2 matches the outer surface of the main support bracket 1, thereby ensuring the watertight performance between the overall shape and the shell 3.

[0034] To address the sealing structure in this embodiment of the invention, a further processing tooling is provided to avoid affecting the sealing performance of the sealing structure during the forming process when the plug 2 and the main support bracket 1 are formed on their outer surfaces.

[0035] Specifically, such as Figure 8 and Figure 9 As shown, the processing fixture of this embodiment of the invention includes a process cover plate 13, a limiting member 14, a fastener 15, and an anti-rotation washer 16.

[0036] The process cover plate 13 is provided with a first through hole and a second through hole. The first through hole is used to install a fastener 15, and the second through hole is used to install a limiting member 14. The annular boss 4 inside the inspection hole has a process threaded hole 17 corresponding to the first through hole, used to install the process cover plate 13. The fastener 15 is threadedly connected to the process threaded hole 17, thus installing the process cover plate 13 and the main support bracket 1. The second through hole and the limiting member 14 are provided corresponding to the columnar boss 7 of the plug 2. The limiting member 14 is used to abut against the end face of the columnar boss 7 of the plug 2 after tightening.

[0037] The anti-rotation washer 16 is placed in the groove formed by the locking protrusion 18 and the spiral gradient step 5. When the locking protrusion 18 rotates to the limit step 20, the anti-rotation washer 16 and the groove formed by the locking protrusion 18 and the spiral gradient step 5 have the same shape. Preferably, after installation, the upper end face of the anti-rotation washer 16 is slightly lower than the end face of the annular boss 4 to ensure that the process cover plate 13 can fit tightly and stably with the end face of the annular boss 4 after assembly.

[0038] In a preferred embodiment of the present invention, a relief groove 19 is provided on the inner side of the process cover plate 13. The diameter of the relief groove 19 is larger than the diameter of the annular boss 4, which is used to prevent the plug 2 from protruding from the bracket 1 under pressure.

[0039] In a preferred embodiment of the present invention, the limiting member 14 includes a limiting screw and a locking nut. When the limiting screw rotates to abut against the inner end face of the plug 2, the locking nut locks it in place to prevent loosening. The limiting member 14 of the present invention can prevent the sealing ring 8 from being compressed and retracted due to cutting force during the processing of the plug 2. More preferably, at least two limiting members 14 are symmetrically arranged (in the specific embodiment of the figure, three limiting members 14 are symmetrically arranged at the center of the process cover plate 13), which can provide stable support for the plug 2.

[0040] The installation process of the machining tooling in this embodiment of the invention is as follows: After the sealing ring 8 is installed on the plug 2 and the main support bracket 1 is inserted, the locking protrusions 18 are all located at the limiting step 20 of the spiral gradient step 5. Anti-rotation washers 16, matching the shape of the locking protrusions 18 and the spiral gradient step 5, are placed in the two grooves formed by the locking protrusions 18 and the spiral gradient step 5, respectively. After installation, the upper end face of the anti-rotation washers 16 is slightly lower than the end face of the annular boss 4. The process cover plate 13 is fixed to the end face of the annular boss 4 by two sets of fasteners 15. The anti-rotation washers 16 are confined within the grooves by the process cover plate 13, preventing the plug 2 from rotating, deforming, or even falling off during processing. After the process cover plate 13 is installed, the limiting screw of the limiting member 14 is rotated so that it just contacts the inner end face of the plug 2, and then locked with the locking nut of the limiting member 14 to prevent loosening.

[0041] This invention, through machining fixtures matched to the sealing structure, ensures that the sealing ring is not affected by the tooling assembly and machining cutting forces during processing, maintaining normal assembly compression, and that the processed plug 2 does not protrude or retract into the outer surface of the main support bracket 1, maintaining the matching of the plug 2 with the outer surface of the main support bracket 1. Specifically, this invention, through an anti-rotation washer 16 that fits the groove shape of the spiral gradient step 5, can limit the position of the locking protrusion 18, preventing the plug 2 from rotating, deforming, or even falling off during processing; the limiting member 14 can prevent the sealing ring 8 from being compressed and retracted by the cutting force during processing; and the relief groove provided on the inner side of the process cover plate 13 can prevent the plug 2 from being compressed and protruding from the main support bracket 1.

[0042] This invention significantly improves the ease of disassembly and assembly of the plug and the efficiency of operation, significantly improves the sealing reliability and processing safety of the product, and has passed the rain test and vibration test, demonstrating high application value.

[0043] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A quick-release sealing structure, characterized in that, This includes the plugs installed on the inspection holes on the corresponding main support bracket; The inspection hole has a countersunk hole on the outside and an annular boss on the inside. Two centrally symmetrical spiral gradient steps are formed on the end face of the annular boss along the circumference of the inspection hole. The inner wall of the inspection hole is provided with relief grooves corresponding to the lowest points of the two spiral gradient steps, and the two relief grooves are symmetrically arranged. The inner side of the plug is provided with a columnar boss, and a sealing ring is provided on the stepped surface of the outer periphery of the columnar boss; two symmetrical locking protrusions are provided on the cylindrical surface of the columnar boss; the locking protrusions can extend into the inspection hole from the clearance groove of the inspection hole, and rotate along the spiral gradient step to the limiting step, while pressing the sealing ring into the countersunk hole on the outside of the inspection hole to achieve rotational self-locking.

2. The quick-release sealing structure according to claim 1, characterized in that, The two spiral gradient steps are two centrally symmetrical 1 / 4 segments arranged along the circumference of the inspection hole, that is, the rotation angle of the locking protrusion is 90°.

3. The quick-release sealing structure according to claim 1, characterized in that, The outer side of the plug has two blind holes for plug removal and installation, one of which is a smooth hole and the other is a threaded hole.

4. A disassembly and assembly tool for disassembling and assembling the plug in the sealing structure according to any one of claims 1-3, characterized in that, The disassembly and assembly tools include a chassis, pins, screws, and a rotary handle; The chassis has two through holes for installing a pin and a screw, respectively. The two through holes on the chassis correspond to the two blind holes on the plug. The pin on the chassis is used to insert into the open hole on the plug, and the screw on the chassis is used to insert into the threaded hole on the plug and thread it. The chassis is also provided with a rotary handle for rotating the plug.

5. The disassembly and assembly tool according to claim 4, characterized in that, The rotary handle is located in the middle of the chassis, and the through holes on the chassis are located on both sides of the rotary handle.

6. A machining fixture, applied to the sealing structure according to any one of claims 1-3, characterized in that, This includes process cover plates, limiting components, fasteners, and anti-rotation washers; The process cover plate is provided with a first through hole and a second through hole. The first through hole is used to install fasteners, and the second through hole is used to install limiting components. The end face of the annular boss is provided with a process thread hole corresponding to the first through hole, which is used to install the process cover plate through the fasteners. The limiting component is provided with a columnar boss corresponding to the plug, which is used to abut against the end face of the columnar boss of the plug after tightening. The anti-rotation washer is placed in the groove formed by the locking protrusion and the spiral gradient step. When the locking protrusion rotates to the limit step, the anti-rotation washer is consistent with the shape of the groove formed by the locking protrusion and the spiral gradient step.

7. The machining tooling according to claim 6, characterized in that, The inner side of the process cover plate is provided with a relief groove, the diameter of which is larger than the diameter of the annular boss.

8. The machining tooling according to claim 6, characterized in that, The limiting component includes a limiting screw and a locking nut.

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