Screw structure for leveling keel

Abstract

The utility model provides a screw structure used for keel leveling, which comprises a wall screw used for being fixed with a wall surface, the front end of the wall screw is provided with an external thread section, and the rear end of the external thread section is provided with a limiting part protruding in the radial direction; the threaded sleeve is in threaded fit with the external threaded section and has a certain axial length, the threaded sleeve is provided with an internal threaded hole penetrating along the axis of the threaded sleeve, the periphery of the threaded sleeve is provided with a polygonal second stress part enabling the threaded sleeve to rotate, and the axial backward position of the threaded sleeve on the external threaded section is limited by a limiting part; the bolt is in threaded fit with the inner threaded hole from the front end, the front end of the bolt is provided with a T-shaped head part, and the T-shaped head part is provided with a third stress part used for enabling the T-shaped head part to rotate. Positioning of keel flatness can be completed through the height of the front end face of the threaded sleeve while wall nails are locked, later repeated adjustment is omitted, and time and labor are saved during installation; the front end face of the wall nail is located in the threaded sleeve and cannot protrude forwards to penetrate through the keel, and therefore sliding of the installation piece in the installation groove in the front side of the keel cannot be blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of home decoration, in particular to a screw structure for keel leveling. Background Art

[0002] When dry-hanging wall panels on indoor walls, it is necessary to first fix the keel to the wall with a number of expansion screws, and then insert a number of inclined wedges between the keel and the wall from both sides to level the keel. During the leveling process, it is necessary to repeatedly adjust the depth of the expansion screws locked into the wall. This leveling method not only has very low leveling efficiency, but the repeated rotation of the expansion screws can easily reduce the reliability of the connection with the wall. In addition, the inclined wedges below are also easy to fall off during use, thereby affecting the stability of the wall panel installation structure. Utility Model Content

[0003] The utility model aims to provide a keel leveling screw structure which is easy to install and level.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0005] A screw structure for keel leveling includes a wall nail for fixing to a wall surface, the front end of the wall nail having an external threaded section, and the rear end of the external threaded section having a radially protruding limiting portion, and the front end surface of the wall nail also having a first force-bearing portion for rotating it; it also includes a threaded sleeve that is threadedly engaged with the external threaded section and has a certain axial length, the threaded sleeve has an internal threaded hole passing through it along its axis, and a polygonal second force-bearing portion on the outer periphery for rotating it, and the axial rearward position of the threaded sleeve on the external threaded section is limited by the limiting portion; it also includes a bolt that is threadedly engaged with the internal threaded hole from the front end, the front end of the bolt has a T-head, and the T-head has a third force-bearing portion for rotating it.

[0006] In a preferred embodiment, the second force-bearing portion of the threaded sleeve is located at the front end thereof, and a section located behind the second force-bearing portion is a conical section whose diameter gradually decreases toward the rear end.

[0007] A preferred solution further includes a keel arranged parallel to the wall, the keel having a mounting hole for the bolt to pass through, and the keel is clamped and fixed between the front end surface of the threaded sleeve and the T head.

[0008] In a preferred embodiment, the limiting portion is in the form of a circular ring, and the front end surface of the limiting portion is parallel to the rear end surface of the threaded sleeve.

[0009] In a preferred embodiment, the rear section of the wall nail is a tapping section, and the length of the tapping section is much greater than the external thread section.

[0010] In a preferred embodiment, the first force-bearing portion is a cross groove formed on the front end surface of the wall nail.

[0011] In a preferred embodiment, the second force-bearing portion is a regular hexagon arranged concentrically with the threaded sleeve.

[0012] In a preferred embodiment, the third force-bearing portion is a cross groove provided on the front end surface of the T-head portion.

[0013] The beneficial effects of this solution are as follows: during installation, the threaded sleeve can be matched with the external threaded section of the wall stud until it abuts against the limiting portion, and then the wall stud can be locked into the wall surface, so that the front end of the threaded sleeve remains flush with the laser line emitted by the laser level. If the wall stud is locked too deep, the wall stud can be rotated in the opposite direction through the first force-bearing portion to fine-tune its forward movement. The back of the keel can then be abutted against the front end of the threaded sleeve, and the keel can be directly locked with bolts. While the wall stud is being locked, the keel flatness can be determined by the height of the front end of the threaded sleeve, eliminating the need for repeated adjustments later and saving time and effort during installation. The front end of the threaded sleeve has a large diameter and can abut against the back of the keel to maintain its stability, eliminating the need to insert triangular blocks on both sides of the keel to maintain its stability. Since the front end of the wall stud is located within the threaded sleeve, it does not protrude forward and pass through the keel, and therefore does not block the sliding of the mounting member in the mounting groove on the front side of the keel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall installation structure of the screw structure in the embodiment;

[0016] Figure 2 Schematic diagram of the cross-sectional structure of the screw in the embodiment;

[0017] Figure 3 Schematic diagram of the installation structure of the wall nail and the threaded sleeve in the embodiment. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] refer to Figures 1 to 3, a screw structure for keel leveling of this embodiment includes a wall nail 1 for fixing to a wall surface, wherein the front end of the wall nail 1 has an external threaded section 11, and the rear end of the external threaded section 11 has a radially protruding limit portion 12, and the front end surface of the wall nail 1 also has a first force-bearing portion 13 for rotating it; it also includes a threaded sleeve 2 threadedly engaged with the external threaded section 11 and having a certain axial length, the threaded sleeve 2 has an internal threaded hole 21 passing through along its axis, and a polygonal second force-bearing portion 22 on the outer periphery for rotating it, and the axial rearward position of the threaded sleeve 2 on the external threaded section 11 is limited by the limit portion 12; it also includes a bolt 3 threadedly engaged with the internal threaded hole 21 from the front end, the front end of the bolt 3 has a T-head 31, and the T-head 31 has a third force-bearing portion 32 for rotating it.

[0020] During installation, the threaded sleeve 2 can be engaged with the external threaded section 11 of the wall stud 1 until it abuts against the limiting portion 12. The wall stud 1 can then be locked into the wall surface, with the front end of the threaded sleeve 2 kept flush with the laser line emitted by the laser level. If the wall stud 1 is locked too deeply, the wall stud 1 can be rotated in the opposite direction via the first force-bearing portion 13 to fine-tune its forward movement. The back of the keel can then be abutted against the front end of the threaded sleeve 2, and the keel can be directly locked with the bolt 3. As the wall stud 1 is locked in, the keel flatness can be determined by the height of the front end of the threaded sleeve 2, eliminating the need for repeated adjustments later and saving time and effort during installation. The front end of the threaded sleeve 2 has a larger diameter, which can abut against the back of the keel to maintain its stability, eliminating the need to insert triangular blocks on both sides of the keel to maintain its stability. Since the front end of the wall stud 1 is located within the threaded sleeve 2, it does not protrude forward and pass through the keel, and therefore does not block the sliding of the mounting member in the mounting groove on the front side of the keel.

[0021] In a preferred embodiment, the second force-bearing portion 22 of the threaded sleeve 2 of this embodiment is located at its front end, while a tapered section 23 is located behind the second force-bearing portion 22, the diameter of which gradually decreases towards the rear end. This tapered section 23 not only enhances the rigidity of the threaded sleeve 2, but also allows its smaller diameter end to partially penetrate the outer periphery of the wall stud 1 in the wall, thereby creating a smaller installation gap between the stud and the wall during installation.

[0022] In a preferred embodiment, the screw structure of this embodiment further includes a keel for being arranged parallel to the wall surface. The keel has mounting holes for the bolts 3 to pass through. The keel is sandwiched and fixed between the front end surface of the threaded sleeve 2 and the T-head 31. The keel has multiple mounting holes along its length, which are correspondingly fixed to the wall surface by multiple screw structures, and its spacing from the wall surface and its parallelism with other keels can be adjusted.

[0023] In a preferred embodiment, the limiting portion 12 of this embodiment is in the form of a circular ring, and the front end surface of the limiting portion 12 is parallel to the rear end surface of the threaded sleeve 2 .

[0024] In a preferred embodiment, the rear section of the wall nail 1 in this embodiment is a tapping section 14 , and the length of the tapping section 14 is much greater than the external thread section 11 .

[0025] In a preferred embodiment, the first force-bearing portion 13 of this embodiment is a cross groove provided on the front end surface of the wall nail 1 .

[0026] In a preferred embodiment, the second force-bearing portion 22 of this embodiment is a regular hexagon arranged concentrically with the threaded sleeve 2.

[0027] In a preferred embodiment, the third force-bearing portion 32 of this embodiment is a cross groove provided on the front end surface of the T-head portion 31 .

[0028] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A screw structure for keel leveling, characterized by: It includes a wall nail for fixing to a wall surface, the front end of the wall nail has an external threaded section, and the rear end of the external threaded section has a radially protruding limiting portion, and the front end surface of the wall nail also has a first force-bearing portion for rotating it; it also includes a threaded sleeve that is threadedly engaged with the external threaded section and has a certain axial length, the threaded sleeve has an internal threaded hole passing through along its axial center line, and a polygonal second force-bearing portion on the outer periphery for rotating it, and the axial rearward position of the threaded sleeve on the external threaded section is limited by the limiting portion; it also includes a bolt that is threadedly engaged with the internal threaded hole from the front end, the front end of the bolt has a T-head, and the T-head has a third force-bearing portion for rotating it.

2. The screw structure for keel leveling according to claim 1, characterized in that: The second force-bearing portion of the threaded sleeve is located at the front end thereof, and a section located behind the second force-bearing portion is a conical surface section whose diameter gradually decreases toward the rear end.

3. The screw structure for keel leveling according to claim 1, characterized in that: It also includes a keel for being arranged parallel to the wall surface, the keel having a mounting hole for the bolt to pass through, and the keel is clamped and fixed between the front end surface of the threaded sleeve and the T head.

4. The screw structure for keel leveling according to claim 1, characterized in that: The limiting portion is in the form of a circular ring, and the front end surface of the limiting portion is parallel to the rear end surface of the threaded sleeve.

5. The screw structure for keel leveling according to claim 1, characterized in that: The rear section of the wall nail is a tapping section, and the length of the tapping section is much greater than the external thread section.

6. The screw structure for keel leveling according to claim 1, characterized in that: The first force-bearing portion is a cross groove formed on the front end surface of the wall nail.

7. The screw structure for keel leveling according to claim 1, characterized in that: The second force-bearing portion is a regular hexagon concentrically arranged with the threaded sleeve.

8. The screw structure for keel leveling according to claim 1, characterized in that: The third force-bearing portion is a cross groove provided on the front end surface of the T-head portion.

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