Screw hole plug for profile installation

Abstract

The utility model relates to the technical field of fasteners, in particular to a screw hole plug for profile installation, which comprises a plug body and a plug cover, the plug body comprises a first end face and a second end face, the first end face extends to the second end face along a first direction, the first direction is defined to be the same as the normal direction of the first end face, and the second end face extends to the second end face along a second direction. A notch is formed in the first end face and extends to the second end face in the first direction to form a hole groove. According to the screw hole plug for profile installation, the end of the plug body is sealed through the plug cover, so that it is guaranteed that a screw head of a screw is located in a relatively independent environment, the screw head of the screw is isolated from the external environment, and therefore the corrosion rate of the screw head is slowed down, and through cooperation of the first protrusion and the abutting groove, after the plug cover and the plug body are closed, the screw head of the screw is prevented from being damaged. When the plug cover falls off, the plug cover can still bear the pulling force pointing to the plug body, so that the plug cover is tightly attached to the end of the plug body, the sealing performance of the plug cover is guaranteed, and meanwhile the possibility that the plug cover falls off accidentally is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a screw hole plug for profile installation. Background Art

[0002] During the installation process, profiles require the cooperation of fasteners such as screws, but most screws are made of metal. The screws fixed on the profiles are exposed to the external environment for a long time and are prone to rust. Once the screws are rusted, rainwater leakage may occur at the connection between the fasteners and the profiles. At the same time, it will also affect the stability of the profiles after installation.

[0003] In response to the above problems, workers in the relevant field have designed a hole plug installed between the screw head and the profile. This hole plug is elastic. When in use, the screw passes through the hole plug and is connected to the profile. After that, the screw is turned to tighten the screw and the profile. At this time, the nail head and the end of the hole plug are pressed against each other, causing the hole plug to be compressed and deformed. The deformed part of the hole plug will fill the gap at the connection between the screw and the profile, thereby protecting the side of the screw. However, in actual applications, it is found that some screws using this type of hole plug will still rust after a period of time. This is caused by the rust of the screw head. After the nail head rusts, the deformed part of the hole plug will rebound locally, which will cause a tiny gap path to appear between the screw and the screw hole again. Rainwater and moisture can invade the inside of the screw hole through these paths, causing the screw to rust. Therefore, it is necessary to propose a screw hole plug that can delay the rust of the screw to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a hole plug which can reduce the probability of screw corrosion and prolong the service life of the screw.

[0005] The technical solution adopted by the utility model to solve the above problems is: a screw hole plug for profile installation, comprising:

[0006] A plug body, the plug body comprising a first end face and a second end face, the first end face extending along a first direction to the second end face, the first direction being defined as being the same as a normal direction of the first end face, a slot being constructed on the first end face, the slot extending along the first direction to the second end face to form a hole slot for the screw to pass through.

[0007] The plug cover comprises a third end face and a fourth end face, wherein the third end face extends to the fourth end face along a second direction, and the second direction is defined as being the same as a normal direction of the third end face.

[0008] The plug cover is detachably connected to the plug body, and the area of ​​the fourth end surface is larger than the area of ​​the notch.

[0009] The screw passes through the hole and is fastened to the profile. The plug is clamped between the profile and the nail head of the screw. The nail head of the screw applies a force to the plug pointing to the profile, so that the plug is deformed to block the gap at the connection between the screw and the profile.

[0010] The end of the plug cover extends along the second direction to form a first connecting portion, the first connecting portion has an annular outer peripheral side surface, the outer peripheral side surface is configured with an inwardly recessed abutment groove, and the inner wall of the hole groove is configured with an outwardly protruding first protrusion.

[0011] After the first connecting portion is plugged into the hole groove, the first protrusion is embedded in the abutment groove, and the first protrusion abuts against the inner wall of the abutment groove to press the plug cover toward the plug body so that the nail head of the screw is in the sealed cavity formed by the hole groove and the fourth end face.

[0012] Preferably, the plug cover is connected to the plug body via a connecting portion.

[0013] Preferably, the end of the plug cover extends in a second direction to form a second connecting portion, the second connecting portion has an annular inner peripheral side surface, the inner peripheral side surface is configured with a snap-fit ​​groove, and the side surface of the plug body extends in a direction away from the center of the hole groove to form a second protrusion.

[0014] After the first connecting portion is plugged into the hole groove, the second protrusion is embedded in the engaging groove.

[0015] Preferably, the first end face and the second end face are limited to be arranged in parallel, and the shapes of both are limited to be circular, the radius of the second end face is smaller than the radius of the first end face, and the center line of the first end face is arranged colinearly with the center line of the second end face.

[0016] Preferably, when the plug body is observed along a first cross section, the wall thickness of the plug body remains unchanged, and the first cross section is defined as a plane passing through the axis of the plug body.

[0017] Preferably, when the plug body is observed along a first cross section, the wall thickness of the plug body gradually increases in a direction from the first end face to the second end face, and the first cross section is defined as a plane passing through the axis of the plug body.

[0018] Preferably, the first end face and the second end face are limited to be arranged in parallel, and the shapes of both are limited to be circular, the radius of the second end face is equal to the radius of the first end face, and the center line of the first end face is arranged colinearly with the center line of the second end face.

[0019] An annular flange is formed on the inner wall of the hole groove near the second end surface.

[0020] Preferably, the peripheral side of the plug body extends in a direction away from the center of the hole groove near the second end surface to form an annular abutment portion.

[0021] Preferably, the second end surface is configured with a plurality of annular sealing lips.

[0022] Beneficial Effects

[0023] This type of screw hole plug used for profile installation seals the end of the plug body through the plug cover to ensure that the nail head of the screw is in a relatively closed environment, isolating the nail head of the screw from the external environment, thereby slowing down the rust rate of the nail head, and, through the cooperation of the first protrusion and the abutment groove, the plug cover is still subjected to a pulling force directed to the plug body after being closed with the plug body, so that the plug cover and the end of the plug body fit tightly, while ensuring the sealing of the plug cover, the possibility of accidental falling off of the plug cover is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A front cross-sectional view of a hole plug according to an embodiment of the utility model is shown.

[0025] Figure 2 A front cross-sectional view of a plug cover according to an embodiment of the utility model is shown.

[0026] Figure 3 A schematic structural diagram of a hole plug according to an embodiment of the utility model is shown.

[0027] Figure 4 A front cross-sectional view of a hole plug according to an embodiment of the utility model is shown.

[0028] Figure 5 A front cross-sectional view of a plug cover according to an embodiment of the utility model is shown.

[0029] Figure 6 A schematic structural diagram of a hole plug according to an embodiment of the utility model is shown.

[0030] Figure 7 A front cross-sectional view of a plug body according to an embodiment of the utility model is shown.

[0031] Figure 8 A front cross-sectional view of a plug body according to an embodiment of the utility model is shown.

[0032] Fig. 9 A schematic structural diagram of a plug body according to an embodiment of the utility model is shown.

[0033] Among them: 1. plug body; 110. first end face; 120. second end face; 121. annular sealing lip; 130. hole groove; 131. first protrusion; 132. annular flange; 140. second protrusion; 150. annular abutment portion; 2. plug cover; 210. first connecting portion; 211. outer peripheral side surface; 2111. abutment groove; 220. second connecting portion; 221. inner peripheral side surface; 2211. engaging groove; 230. third end face; 240. fourth end face; 3. connecting piece. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description created by the present application, unless otherwise specified, "multiple" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0037] like Figure 1-3As shown, in a preferred embodiment of the present application, a screw hole plug for profile installation is provided, including a plug body 1 and a plug cover 2, wherein the plug body 1 is constructed with a hole groove 130 penetrating the plug body 1 for the screw to pass through, and the extension direction of the hole groove 130 is the same as the first direction, and the screw (not shown in the figure) is fastened to the profile (not shown in the figure) after passing through the hole groove 130, and the plug body 1 is clamped between the profile and the nail head of the screw, and the nail head of the screw applies a force to the plug body 1 pointing to the profile, so that the plug body 1 is deformed to seal the gap at the connection between the screw and the profile. One end of the plug cover 2 extends along the second direction to form a first connecting portion 210 having an annular outer peripheral side surface 211, the annular outer peripheral side surface 211 is recessed inwardly to form an inwardly concave annular abutment groove 2111, and the peripheral side of the inner wall of the hole groove 130 protrudes outwardly to form a first protrusion 131. After the first connecting portion 210 is plugged into the hole groove 130, the first protrusion 131 is embedded in the abutment groove 2111, and the first protrusion 131 abuts against the inner wall of the abutment groove 2111 to press the plug cover 2 toward the plug body 1 so that the nail head of the screw is in the sealed cavity formed by the hole groove 130 and the plug cover 2. To summarize, when the screw passes through the hole slot 130 and is fastened to the screw hole on the profile, the nail head of the screw will abut against one end face of the plug body 1 to apply a force directed toward the profile to the plug body 1, so that the plug body 1 is deformed, thereby sealing the gap at the connection between the screw and the profile. After that, the screw is installed, and the plug cover 2 is fixed to the end of the plug body 1 away from the profile through the cooperation of the first protrusion 131 and the abutment groove 2111. In addition, the plug cover 2 is pressed toward the plug body 1 under the action of the first protrusion 131, so that the nail head of the screw is in a sealed cavity formed by the hole slot 130 and the plug cover 2, so that the nail head part of the screw is separated from the external environment, thereby delaying the rust of the screw and extending the service life of the screw.

[0038] Specifically, the plug body 1 includes a first end face 110, which extends along a first direction to form a second end face 120, the first direction is in the same direction as the normal direction of the first end face 110, in this embodiment, the first end face 110 is arranged in parallel with the second end face 120, and the center line of the first end face 110 is collinear with the center line of the second end face 120, the hole groove 130 is formed by a notch 111 constructed at the center of the first end face 110 extending along the first direction to the second end face 120, that is, the extension direction of the hole groove 130 is parallel to the normal direction of the first end face 110, and the hole groove 130 passes through the plug body 1. The plug cover 2 includes a third end face 230, which extends along a second direction to form a fourth end face 240, the second direction is in the same direction as the normal direction of the third end face 230, the first connecting portion 210 is arranged on the fourth end face 240, and the first connecting portion 210 is an annular structure. When the first protrusion 131 abuts against the inner wall of the abutting groove 2111, the contact point between the first protrusion 131 and the abutting groove 2111 is set as a (not shown in the figure), the contact point between the abutting groove 2111 and the first protrusion 131 is set as b (not shown in the figure), and the distance from point a to the fourth end face 240 is set as d1. When the plug cover 2 is not connected to the plug body 1, the distance from point b on the inner wall of the abutting groove 2111 to the fourth end face 240 is set as d2, and d1 is configured to be greater than d2. In this way, after the first protrusion 131 is embedded in the abutting groove 2111, the first connecting portion 210 will be subjected to the abutting force applied by the first protrusion 131 to press it down, so that the plug cover 2 still has a tendency to move toward the plug body 1 after abutting against the plug body 1, so that the plug cover 2 is firmly fixed at the end of the plug body 1. It should be noted that both the plug body 1 and the plug cover 2 can undergo elastic deformation.

[0039] In one embodiment, in order to prevent the plug cover 2 from being lost during transportation and storage, the plug cover 2 can be connected to the plug body 1 via a connecting member 3 .

[0040] like Figure 4-6 As shown, in one embodiment, in order to further enhance the sealing performance of the hole plug and strengthen the strength after the plug cover 2 is connected to the plug body 1, the end of the plug cover 2 can be extended along the second direction to form a second connecting portion 220, and the second connecting portion 220 has an annular inner peripheral side surface 221, and the inner peripheral side surface 221 is configured with a snap-fit ​​groove 2211. The peripheral side of the plug body 1 extends in a direction away from the center of the hole groove 130 to form a second protrusion 140. After the first connecting portion 210 is plugged into the hole groove 130, the second protrusion 140 is embedded in the snap-fit ​​groove 2211.

[0041] Specifically, the second connection portion 220 is constructed on the fourth end surface 240, and the second connection portion 220 is an annular structure. After the plug cover 2 is connected to the plug body 1, the second protrusion 140 is embedded in the engaging groove 2211, and the second protrusion 140 and the engaging groove 2211 are interference fit. In some embodiments, the second protrusion 140 is an annular protrusion, and the engaging groove 2211 is an annular groove adapted to the annular protrusion.

[0042] like Figure 1-6 As shown, in one embodiment, when the screw is a countersunk screw and the screw hole is a screw hole with a countersunk head, the shapes of the first end face 110 and the second end face 120 are both limited to a circle, the radius of the second end face 120 is smaller than the radius of the first end face 110, and the center line of the first end face 110 and the center of the second end face 120 are collinearly arranged. At this time, the plug body 1 is a truncated cone with a hole groove 130, the center line of the hole groove 130 coincides with the axis of the truncated cone, the surface with a smaller radius in the truncated cone is the second end face 120, and the surface with a larger radius in the truncated cone is the first end face 110. When the plug body 1 is embedded in the countersunk part of the screw hole, the inclined surface on the circumferential side of the truncated cone body fits with the inclined surface on the inner wall of the countersunk part to ensure that the plug body 1 is compatible with the countersunk screw hole.

[0043] In some embodiments, when the plug body 1 is observed along a first cross section, the wall thickness of the plug body 1 remains unchanged, and the first cross section is defined as a plane passing through the axis of the plug body 1. At this time, the shape of the hole slot 130 in the plug body 1 is also a truncated cone, and when the countersunk screw passes through the hole slot 130 to complete the connection with the profile, the inclined surface on the countersunk structure of the screw fits with the inclined surface of the truncated cone corresponding to the hole slot 130, so as to ensure that the hole slot 130 is adapted to the countersunk structure of the countersunk screw, thereby ensuring good sealing performance between the countersunk screw and the plug body 1.

[0044] like Figure 7As shown, in other embodiments, when the plug body 1 is observed along the first cross section, the wall thickness of the plug body 1 gradually increases along the direction from the first end face 110 to the second end face 120, and the first cross section is defined as a plane passing through the axis of the plug body 1. At this time, the shape of the hole slot 130 in the plug body 1 is also a truncated cone, and after the countersunk screw passes through the hole slot 130 and completes the connection with the profile, the inclined surface on the upper side of the countersunk head structure of the screw fits with the inclined surface of the truncated cone corresponding to the hole slot 130 to ensure that the hole slot 130 is compatible with the countersunk head structure of the countersunk screw, thereby enhancing the sealing performance of the countersunk screw after being connected to the plug body 1. However, it should be noted that the wall thickness of the plug body 1 will gradually change along the first direction, specifically, when the first direction is defined as from the first end face 110 to the second end face 120, the wall thickness of the plug body 1 gradually increases. Such a configuration can improve the reuse rate of the plug body 1, because after the screw is installed, the countersunk structure of the screw will squeeze the inner wall of the hole groove 130, and in the process of disassembling and installing the countersunk screw, the countersunk structure of the screw will also exert a large friction and extrusion force on the inner wall of the hole groove 130. Therefore, increasing the wall thickness of the plug body 1 helps to reduce the possibility of damage to the plug body 1, thereby achieving the effect of extending the service life of the hole plug.

[0045] like Figure 8-9 As shown, in one embodiment, the screw is a flat head screw, which has no countersunk structure. Therefore, countersunk holes are mostly not processed on the profiles assembled with such screws. In order to make the hole plug in the present application suitable for flat head screws, the shapes of the first end face 110 and the second end face 120 are both limited to circular surfaces, the radius of the second end face 120 is equal to the radius of the first end face 110, and the center line of the first end face 110 is collinear with the center line of the second end face 120. At this time, the plug body 1 is a cylinder, the center line of the hole groove 130 is collinear with the center line of the cylinder, and the inner wall of the hole groove 130 extends toward the center direction of the hole groove 130 near the second end face 120 to form an annular flange 132. When the flat head screw passes through the hole groove 130 and is fastened to the profile, the plane of the screw head will abut against one side of the annular flange 132, so that the annular flange 132 is compressed and deformed to achieve the sealing of the gap between the screw and the screw hole.

[0046] Furthermore, the peripheral side of the plug body 1 extends in a direction away from the center of the hole groove 130 near the second end face 120 to form an annular abutment portion 150, and the end face of the annular abutment portion 150 is flush with the second end face 120 to expand the contact area between the second end face 120 on the plug body 1 and the profile to enhance the sealing performance of the hole plug. At the same time, a plurality of annular sealing lips 121 are also constructed on the second end face 120. When the screw is tightened, the plug body 1 is subjected to a force directed to the profile, and the second end face 120 and the annular sealing lips 121 are simultaneously compressed and deformed to further enhance the sealing performance between the second end face 120 and the contact surface of the profile.

[0047] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A screw hole plug for profile installation, characterized in that: include: A plug body, the plug body comprising a first end face and a second end face, the first end face extending along a first direction to the second end face, the first direction being defined as being the same as a normal direction of the first end face, a notch being configured on the first end face, the notch extending along the first direction to the second end face to form a hole slot for the screw to pass through; A plug cover, the plug cover comprising a third end face and a fourth end face, the third end face extending to the fourth end face along a second direction, the second direction being defined as being in the same direction as a normal direction of the third end face; The plug cover is detachably connected to the plug body, and the area of ​​the fourth end surface is larger than the area of ​​the notch; The screw passes through the hole and is fastened to the profile, and the plug is clamped between the profile and the screw head. The screw head applies a force to the plug pointing to the profile, so that the plug is deformed and the gap at the connection between the screw and the profile is blocked. The end of the plug cover extends along the second direction to form a first connecting portion, the first connecting portion has an annular outer peripheral side surface, the outer peripheral side surface is configured with an inwardly recessed abutment groove, and the inner wall of the hole groove is configured with a first protrusion protruding outward; After the first connecting portion is plugged into the hole groove, the first protrusion abuts against the abutment groove to press the plug cover toward the plug body so that the nail head of the screw is in the sealed cavity formed by the hole groove and the fourth end face.

2. A screw hole plug for profile installation according to claim 1, characterized in that: The plug cover is connected to the plug body through a connecting portion.

3. A screw hole plug for profile installation according to claim 2, characterized in that: The end of the plug cover extends along the second direction to form a second connecting portion, the second connecting portion has an annular inner peripheral side surface, the inner peripheral side surface is configured with a snap-fit ​​groove, and the side surface of the plug body extends in a direction away from the center of the hole groove to form a second protrusion; After the first connecting portion is plugged into the hole groove, the second protrusion is embedded in the engaging groove.

4. A screw hole plug for profile installation according to claim 3, characterized in that: The first end face and the second end face are limited to be arranged in parallel, and the shapes of both are limited to be circular, the radius of the second end face is smaller than the radius of the first end face, and the center line of the first end face is arranged colinearly with the center line of the second end face.

5. A screw hole plug for profile installation according to claim 4, characterized in that: When the plug body is observed along a first cross section, the wall thickness of the plug body remains unchanged, and the first cross section is defined as a plane passing through the axis of the plug body.

6. A screw hole plug for profile installation according to claim 4, characterized in that: When the plug body is observed along a first cross section, the wall thickness of the plug body gradually increases along a direction from the first end face to the second end face, and the first cross section is defined as a plane passing through the axis of the plug body.

7. A screw hole plug for profile installation according to claim 3, characterized in that: The first end face and the second end face are limited to be arranged in parallel, and the shapes of both are limited to be circular, the radius of the second end face is equal to the radius of the first end face, and the center line of the first end face is collinear with the center line of the second end face; An annular flange is formed on the inner wall of the hole groove near the second end surface.

8. A screw hole plug for profile installation according to claim 7, characterized in that: The peripheral side of the plug body extends in a direction away from the center of the hole groove near the second end surface to form an annular abutment portion.

9. A screw hole plug for profile installation according to claim 7 or 8, characterized in that: The second end surface is configured with a plurality of annular sealing lips.

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