Blank wall surface leveler

Abstract

This utility model relates to a rough wall surface leveling device, characterized in that it includes expansion bolts, fastening screws, and connecting joists. The expansion bolts have threads on their outer circumference and include an integrally formed expansion portion and a connecting portion. The expansion portion has multiple evenly distributed circumferentially spaced portions on its outer circumference. A nut for locking the expansion bolts is fitted onto the outer circumference of the connecting portion. The connecting portion has a threaded hole, and a connecting seat is fixed to the end of the connecting portion. The connecting seat is used to overlap the connecting joists. The connecting joists have through holes that correspond to the expansion bolts. The fastening screws are screwed into the threaded holes through the through holes to fix the connecting joists to the connecting seat. This utility model has the following advantages and effects: it facilitates the adjustment of various leveling joists to the same plane, reducing the user's requirements.

Description

Technical Field

[0001] This utility model relates to the field of interior decoration technology, specifically to a rough wall surface leveling device. Background Technology

[0002] In interior decoration, wall panels need to be installed on walls. To ensure that the wall panels are laid flat on the wall, the wall surface needs to be leveled. In traditional leveling operations, the wall surface is mainly repaired by applying putty, which is a relatively cumbersome process. Therefore, currently, wall leveling tools are mainly used to quickly level the wall surface.

[0003] For example, Chinese patent document CN219261593U discloses a horizontally mounted keel system that can be frontally leveled, including several types of keels and leveling bolts. The upper and lower parts of the outer wall of the several types of keels away from the leveling bolts are fixedly connected with hooks. An expansion tube is provided at the front end of the leveling bolts, and a wall is provided outside the expansion tubes. A platform is fixedly connected to the rear end of the outer wall of the leveling bolts, and a nut is provided at the rear end of the leveling bolts.

[0004] In the above technical solution, the various types of keels can be adjusted to the same plane by rotating the leveling bolts to achieve rapid leveling of the wall surface. However, in the above technical solution, the keels are mainly moved during the rotation of the leveling bolts to adjust their positions. However, during the screwing of the leveling bolts, the expansion tubes are squeezed and deformed. As a result, when the positions of the keels need to be adjusted, the leveling bolts cannot be rotated due to the compression and deformation of the expansion tubes. Therefore, the above leveling device has a low overall fault tolerance during use and places high demands on the user. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rough wall leveler that can easily adjust each leveling keel to the same plane, thereby reducing the user's usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rough wall surface leveling device, comprising expansion bolts, fastening screws, and connecting keel. The expansion bolts are threaded on their outer periphery and include an integrally formed expansion portion and a connecting portion. The expansion portion has multiple spacings evenly distributed around its outer periphery. A nut for locking the expansion bolts is fitted around the outer periphery of the connecting portion. The connecting portion has a threaded hole. A connecting seat is fixed to the end of the connecting portion. The connecting seat is used to overlap the connecting keel. The connecting keel has a through hole that can be opposite to the expansion bolts. The fastening screws are screwed into the threaded hole through the through hole to fix the connecting keel to the connecting seat.

[0007] The present invention is further configured such that: the connecting seat has connecting ears on both sides parallel to the surface of the connecting keel; the ends of the connecting ears are bent to form a support portion; the support portion is perpendicular to the surface of the connecting keel; the connecting keel has a connecting groove on the side facing the connecting seat that connects with the connecting seat; when the connecting seat slides into the connecting groove, the connecting keel overlaps with the support portion and is supported by the support portion; a pre-locking device is provided between the support portion and the connecting keel; the pre-locking device is used to pre-lock the connecting keel to prevent the connecting keel from shifting when the fastening screw is screwed in.

[0008] The present invention is further configured such that: the pre-locking device includes a connecting groove in the support part with the opening facing the connecting keel, a locking part in the connecting groove, the locking part being slidable along the connecting groove, a spring being provided between the connecting groove and the locking part, a locking block being provided at the end of the locking part, and a locking groove communicating with the connecting groove on the connecting keel, the locking block being able to be inserted into the locking groove to form a locking engagement between the two.

[0009] The present invention is further configured such that: the bottom of the connecting groove is provided with a first recess, the locking part is provided with a second recess at the end facing the connecting groove, and the two ends of the spring can be respectively embedded in the first recess and the second recess.

[0010] The present invention is further configured such that: the support part is provided with an opening communicating with the connecting groove, and the locking part is provided with a push rod extending out of the opening.

[0011] The present invention is further configured such that: the connecting seat is provided with a turning head coaxially arranged with the expansion bolt in the middle.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Because a connecting seat for installing the connecting keel is provided on one side of the expansion bolt, when leveling the wall surface, the expansion bolt and the connecting seat are screwed into the mounting hole together. Since the fastening screw is not screwed into the threaded hole at this time, the expansion part of the expansion bolt does not expand. At this time, the distance between the connecting seat and the wall surface can still be adjusted by rotating the expansion bolt (providing tolerance). After the expansion bolt is rotated to the appropriate position, the nut can be tightened to lock the expansion bolt to the wall surface. When the surfaces of each connecting seat are on the same plane, the connecting keel can be connected to the connecting seat to achieve wall leveling. This makes it easier to adjust each leveling keel to the same plane, reducing the user's requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2This is a side view of the structure of this utility model;

[0016] Figure 3 This is an exploded view of the present invention without the connecting keel installed;

[0017] Figure 4 This is a schematic diagram of the overall structure of this utility model without the connecting keel installed.

[0018] In the diagram: 2. Expansion bolt; 21. Expansion part; 211. Connection part; 22. Fastening screw; 1. Connecting keel; 3. Through hole; 31. Nut; 4. Connecting seat; 5. Support part; 51. Opening; 511. Connecting groove; 32. Connecting groove; 61. Locking part; 62. Locking block; 621. Second groove; 622. Spring; 63. Slot; 64. Push rod; 7. Tightening head; 8. Slot; 100. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 the invention and for simplifying the description, and do not 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4 As shown, this utility model discloses a rough wall surface leveling device, including an expansion bolt 2, a fastening screw 1, and a connecting keel 3. The expansion bolt 2 has threads on its outer periphery and includes an integrally formed expansion part 21 and a connecting part 22. The expansion part 21 has a spacing 211 on its outer periphery, and there are multiple spacings 211 evenly distributed around the circumference. The connecting part 22 has a threaded hole. When the fastening screw 1 is screwed into the threaded hole, the expansion part 21 can be pushed outward, so that the expansion bolt 2 can be tightly abutted in the pre-opened installation hole in the wall. The connecting part 22 is fitted with a nut 4 for locking the expansion bolt 2 to the wall. The end of the connecting part 22 is fixed with a connecting seat 5. The connecting seat 5 is used to overlap the connecting keel 3. The connecting keel 3 has a through hole 31 that is opposite to the expansion bolt 2. The fastening screw 1 is screwed into the threaded hole through the through hole 31 to fix the connecting keel 3 to the connecting seat 5.

[0022] When leveling the wall surface, first draw crisscrossing positioning lines on the wall surface using a chalk line. Drill installation holes at the intersections of the crisscrossing positioning lines. Then, rotate the expansion bolt 2 to screw the expansion bolt 2 and the connecting seat 5 into the installation holes. Since the fastening screw 1 is not screwed into the threaded hole at this time, the expansion part 21 of the expansion bolt 2 does not expand. At this time, the distance 211 between the connecting seat 5 and the wall surface can still be adjusted by rotating the expansion bolt 2. After the expansion bolt 2 is rotated to the appropriate position, the nut 4 can be tightened to lock the expansion bolt 2 to the wall surface. When the surfaces of all the connecting seats 5 are on the same plane, the connecting keel 3 can be connected to the connecting seat 5 to achieve the leveling of the wall surface. Then, the wall panel can be glued to the surface of the connecting keel 3.

[0023] Therefore, this embodiment adopts a method in which the expansion bolts 2 and the connecting keel 3 are not directly connected. When leveling the wall surface, the distance 211 between the connecting seat 5 and the wall surface can be adjusted first. When the surfaces of each connecting seat 5 are on the same plane, the connecting keel 3 and the connecting seat 5 are then fixed. This avoids the method in the prior art where the keel and the expansion bolts 2 are directly connected. When adjusting the distance 211 between the keel and the wall surface, the expansion of the expansion bolts 2 has an irreversible problem in adjusting the distance 211 between the keel and the wall surface. This can effectively improve the fault tolerance when leveling the wall surface and reduce the user's usage requirements.

[0024] In this embodiment, connecting ears parallel to the surface of the connecting keel 3 are provided on both sides of the connecting seat 5. The ends of the connecting ears are bent to form a support portion 51. The support portion 51 is perpendicular to the surface of the connecting keel 3. The connecting keel 3 is provided with a connecting groove 32 on the side facing the connecting seat 5, which connects with the connecting seat 5. When the connecting seat 5 slides into the connecting groove 32, the connecting keel 3 overlaps with the support portion 51 and is supported by the support portion 51. Thus, when the connecting keel 3 is tightened later, the worker does not need to continuously support the connecting keel 3, thereby improving the convenience of fixing the connecting keel 3 and the connecting seat 5. In addition, a pre-locking device is provided between the support portion 51 and the connecting keel 3. The pre-locking device is used to pre-lock the connecting keel 3 to prevent the connecting keel 3 from shifting when the fastening screw 1 is screwed in.

[0025] In this embodiment, the pre-locking device includes a connecting groove 61 with its opening facing the connecting keel 3 inside the support part 51. A locking part 62 is provided in the connecting groove 61 and can slide along the connecting groove 61. A spring 63 is provided between the connecting groove 61 and the locking part 62. A locking block 621 is provided at the end of the locking part 62. The connecting keel 3 is provided with a slot 64 communicating with the connecting groove 32. The locking block 621 can be inserted into the slot 64 to form a snap-fit ​​engagement between the two. When the connecting keel 3 is installed on the connecting seat 5, the locking part 62 is first pushed outward. At this time, the spring 63 is stretched until the locking part 62 is pushed out to the point where it can be locked. After the block 621 is positioned opposite the slot 64, align the slot 64 of the connecting keel 3 with the connecting seat 5, push the connecting keel 3 towards the connecting seat 5, and the connecting seat 5 can slide into the connecting groove 32. At this time, after the locking part 62 is released, the stretched spring 63 can drive the locking part 62 to reset, so that the block 621 abuts against the slot 64, thereby applying positive pressure to the connecting keel 3, increasing the friction force that needs to be overcome when the connecting keel 3 and the connecting seat 5 tend to move relative to each other. In this way, the connecting keel 3 can be pre-locked to prevent the connecting keel 3 from shifting when the fastening screw 1 is screwed in.

[0026] In this embodiment, a first recess is further provided at the bottom of the connecting groove 61, and a second recess 622 is provided at the end of the locking part 62 facing the connecting groove 61. The two ends of the spring 63 can be respectively embedded in the first recess and the second recess 622. By setting the first recess and the second recess 622, the installation position of the spring 63 can be positioned when installing the spring 63, so as to improve the convenience of spring 63 assembly. In this embodiment, the spring 63 is fixed to the first recess and the second recess 622 by adhesive. Since the fastening between the connecting keel 3 and the connecting seat 5 is mainly fixed by the fastening screw 1, the adhesive fixing of the spring 63 is sufficient to ensure the stability of the spring 63 installation.

[0027] In this embodiment, the support part 51 is provided with an opening 511 communicating with the connecting groove 61, and the locking part 62 is provided with a push rod 7 extending through the opening 511. Specifically, the locking part 62 is provided with a slot 100. After the locking part 62 is slid into the connecting groove 61, the push rod 7 can be pressed into the slot 100 to form an interference fit for fixation. Thus, by setting the push rod 7, when it is necessary to push the locking part 62 so that the locking part 62 is pushed out of the connecting groove 61, it is easy to apply force.

[0028] In this embodiment, a screwing head 8 is further provided in the middle of the connecting seat 5, which is coaxially arranged with the expansion bolt 2. The screwing head 8 is integrally formed with the connecting keel 3. By setting the screwing head 8, when the expansion bolt 2 is screwed into the mounting hole on the wall, a sleeve adapted to the screwing head 8 can be used, thereby improving the convenience of installation. Furthermore, by setting the screwing head 8, the length of the threaded hole can be extended in a disguised way, thereby increasing the matching length between the fastening screw 1 and the threaded hole of the connecting part 22, thereby improving the stability when the connecting keel 3 is fastened to the connecting seat 5.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A rough wall surface leveling device, characterized in that, The device includes expansion bolts, fastening screws, and connecting keels. The expansion bolts have threads on their outer circumference and include an integrally formed expansion portion and a connecting portion. The expansion portion has multiple, evenly distributed circumferentially spaced expansion portions. A nut for locking the expansion bolts is fitted onto the outer circumference of the connecting portion. The connecting portion has a threaded hole, and a connecting seat is fixed to the end of the connecting portion. The connecting seat is used to overlap the connecting keel. The connecting keel has a through hole that aligns with the expansion bolts. The fastening screws are screwed into the threaded hole through the through hole to fix the connecting keel to the connecting seat.

2. The rough wall surface leveling device according to claim 1, characterized in that, The connecting seat has connecting ears on both sides that are parallel to the surface of the connecting keel. The ends of the connecting ears are bent to form support parts. The support parts are perpendicular to the surface of the connecting keel. The connecting keel has a connecting groove on the side facing the connecting seat that connects with the connecting seat. When the connecting seat slides into the connecting groove, the connecting keel overlaps with the support part and is supported by the support part. A pre-locking device is provided between the support part and the connecting keel. The pre-locking device is used to pre-lock the connecting keel to prevent the connecting keel from shifting when the fastening screw is screwed in.

3. A rough wall surface leveling device according to claim 2, characterized in that, The pre-locking device includes a connecting groove with its opening facing the connecting keel in the support part, a locking part in the connecting groove, the locking part being able to slide along the connecting groove, a spring between the connecting groove and the locking part, a locking block at the end of the locking part, and a locking groove on the connecting keel communicating with the connecting groove, the locking block being able to be engaged with the locking groove to form a locking fit between the two.

4. A rough wall surface leveling device according to claim 3, characterized in that, The bottom of the connecting groove is provided with a first recess, and the locking part is provided with a second recess at the end facing the connecting groove. The two ends of the spring can be respectively embedded in the first recess and the second recess.

5. A rough wall surface leveling device according to claim 3, characterized in that, The support part has an opening that communicates with the connecting groove, and the locking part has a push rod that passes through the opening.

6. A rough wall surface leveling device according to claim 2, characterized in that, The connecting seat has a screwing head in the middle that is coaxial with the expansion bolt.

Images