Concealed wire box square hole tapper for secondary structure
Through the concealed wire box square hole opening designed with the Lelo triangle drill bit and the limit frame, the problem of difficulty in controlling the square hole opening of the concealed wire box in the secondary structure is solved, and efficient and beautiful concealed wire box installation is achieved, reducing construction costs.
Patent Information
- Application Number
- CN202422206111.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-09
AI Technical Summary
When the prior art opens square holes of concealed wire box on secondary structures, the quality of the opening is difficult to control, it is prone to be skewed or opened large, resulting in untidy installation, poor appearance quality, low working efficiency, and high cost.
The square hole hole opener of the concealed wire box using the Lelo triangle drill bit and limit box design uses the Lelo triangle principle and tooth movement trajectory, combined with the square design of the limit box, ensures the accuracy and stability of the opening, and adapts to the size of the concealed wire box to achieve one-time opening.
High-quality and stable square hole openings on secondary masonry walls have been realized, which saves labor costs, improves construction efficiency and aesthetics, and reduces the workload of gap filling in later stages.
Smart Images
Figure CN223115559U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, and particularly relates to a concealed wiring box square hole drilling tool for secondary structures. Background Technique
[0002] In the building electrical and mechanical installation project, after the secondary structure construction is completed, it is necessary to install concealed wiring boxes such as switches, sockets, and networks on the masonry walls of the secondary structure. Since the concealed wiring boxes are all square, when installing them concealed on the masonry walls, usually a cutting machine is first used to cut a square box with the size of the concealed wiring box on the masonry wall, and then the masonry in this square box is chiseled out to a depth that can accommodate the concealed wiring box. Then, the concealed wiring box is placed in the chiseled hole, and finally, the gaps around the wiring box are sealed with mortar. This method of opening holes for concealed wiring boxes has some defects. First, the square hole is prone to skew during cutting and is not easy to control. Second, the square hole is likely to be cut too large. At this time, when using mortar to fix the concealed wiring box, the wiring box is not easy to keep upright. Especially when installing a row of concealed wiring boxes, the row of wiring boxes is not neat and the visual quality is poor. Third, this hole-opening method has low work efficiency and high construction cost, which does not conform to the current construction concept of cost reduction and efficiency improvement.
[0003] The information disclosed in this background technical section is only intended to increase the understanding of the overall background of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model
[0004] In order to overcome the defects existing in the prior art, a concealed wiring box square hole drilling tool for secondary structures is provided to solve the problem that the hole-opening quality is not easy to control when opening direction holes on the existing secondary structures.
[0005] To achieve the above object, a concealed wiring box square hole drilling tool for secondary structures is provided, including:
[0006] A hand drill;
[0007] A drill bit, the cross-section of the drill bit is in the shape of a Reuleaux triangle, the drill bit has opposite first and second ends, a receiving groove is formed at the first end, a plurality of teeth are formed on the outer edge of the end face of the first end, an eccentric shaft is connected to the second end, the eccentric shaft is connected to a central shaft rod through a transmission inclined shaft, the central shaft rod is coaxially arranged with the drill bit, and the central shaft rod is detachably installed in the drill chuck of the hand drill;
[0008] A limiting square frame coaxially arranged with the drill bit, which is elastically installed on the housing of the hand drill and is movably sleeved outside the drill bit.
[0009] Further, the limiting square frame is square, the side length of the limiting square frame is adapted to the width of the drill bit, and the size of the limiting square frame is adapted to the size of the flush-mounted junction box.
[0010] Further, a plurality of socket sleeves are connected to the limiting square frame, the socket sleeves are arranged in the same direction as the drill bit, a plurality of insertion rods are connected to the machine shell, the insertion rods are movably inserted into the socket sleeves, and a support spring is connected between the socket sleeves and the insertion rods.
[0011] Further, the outer diameter dimension of the insertion rod is adapted to the inner diameter dimension of the socket sleeve.
[0012] Further, the socket sleeve has an open end and a closed end, the closed end is connected to the limiting square frame, and the support spring is connected between the closed end and the insertion rod.
[0013] Further, scale lines are provided on the drill bit, and the scale lines are arranged along the length direction of the drill bit.
[0014] The beneficial effects of the present utility model are as follows: The flush-mounted junction box square hole opener for the secondary structure of the present utility model opens a square hole on the secondary masonry wall at one time, which is convenient, fast and saves labor costs. The square hole opened by the flush-mounted junction box square hole opener for the secondary structure of the present utility model on the secondary masonry wall is regular in circumference, high and stable in hole opening quality, and has strong aesthetics. The flush-mounted junction box square hole opener for the secondary structure of the present utility model opens a hole on the secondary masonry wall according to the size of the flush-mounted junction box, avoiding over-opening of building blocks and saving the workload of later gap filling. Description of the Drawings
[0015] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more obvious:
[0016] Figure 1 It is a schematic structural diagram of the flush-mounted junction box square hole opener for the secondary structure of the embodiment of the present utility model.
[0017] Figure 2 It is a left view of the flush-mounted junction box square hole opener for the secondary structure of the embodiment of the present utility model.
[0018] Figure 3 It is a schematic structural diagram of the drill bit of the embodiment of the present utility model. Detailed Embodiments
[0019] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the sake of description, only the parts related to the utility model are shown in the drawings.
[0020] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.
[0021] Referring to Figures 1 to 3 As shown, the present utility model provides a concealed wiring box square hole opener for secondary structures, including: a hand drill 1, a drill bit 2, and a limit square frame 3.
[0022] The hand drill 1 is a drilling tool powered by an AC power source or a DC battery, and is a type of handheld electric tool. The main components of the hand drill 1 are: a drill chuck 11, an output shaft, gears, a rotor, a stator, a housing 12, a switch, and a cable. The specific structure of the hand drill is prior art and will not be elaborated herein.
[0023] In this embodiment, the drill bit 2 is columnar, and the cross-section of the drill bit 2 is a Reuleaux triangle. The drill bit 2 has opposite first and second ends. A receiving groove is provided at the first end of the drill bit 2. A plurality of teeth 21 are formed on the outer edge of the end face of the first end of the drill bit 2.
[0024] As a preferred embodiment, the teeth are square. The plurality of teeth are spaced apart in the circumferential direction of the drill bit. Further, the plurality of teeth are equidistantly spaced in the circumferential direction of the drill bit.
[0025] An eccentric shaft 21 is connected to the second end of the drill bit 2. The eccentric shaft 21 is connected to a central shaft rod 24 through a transmission inclined shaft 23. The central shaft rod 24 is coaxially arranged with the drill bit 2. The central shaft rod 24 is detachably installed in the drill chuck 11 of the hand drill 1.
[0026] Referring to Figure 3 As shown, a scale line 20 is provided on the drill bit 2. The scale line 20 is arranged along the length direction of the drill bit 2.
[0027] The limit square frame 3 is coaxially arranged with the drill bit 2 (or the central shaft rod). The limit square frame 3 is elastically installed on the housing 12 of the hand drill 1. The limit square frame 3 is movably sleeved outside the drill bit 2.
[0028] As a preferred embodiment, the limit square frame 3 is square. The side length of the limit square frame 3 is adapted to the width of the drill bit 2. The size of the limit square frame 3 is adapted to the size of the concealed wiring box.
[0029] Continuing to refer to Figure 1As shown, the limiting square frame 3 is connected with a plurality of socket sleeves 31. The socket sleeves 31 are arranged in the same direction as the drill bit 2. The machine housing is connected with a plurality of inserting rods 32. The inserting rods 32 are movably inserted into the socket sleeves 31. A support spring 33 is connected between the socket sleeves 31 and the inserting rods 32.
[0030] In this embodiment, the outer diameter dimension of the inserting rod 32 is adapted to the inner diameter dimension of the socket sleeve 31.
[0031] As a preferred embodiment, the socket sleeve 31 has an open end and a closed end, and the closed end is connected to the limiting square frame 3. The support spring 33 is connected between the closed end and the inserting rod 32.
[0032] The concealed wiring box square hole opener for the secondary structure of the present utility model utilizes the Reuleaux triangle principle. When moving along the central axis, the movement trajectory of the triangle edge is in the positive direction. Using this principle, a square hole opener for the secondary structure is designed. The end of the opener is provided with teeth, and the movement trajectory of the teeth is square, so as to facilitate the one-time opening of a concealed square wiring box on the secondary structure masonry wall.
[0033] The height of the solid part of the drill bit is H1, and the height of the hollow part of the drill bit (i.e., the depth of the accommodating groove) is H2.
[0034] The scale lines are distributed on three sides of the drill bit, and the number of the scale lines is one or more. The teeth are used for cutting the wall. The limiting square frame is fixed on the wall to limit the movement range of the drill bit. Under the action of the central shaft rod and the eccentric shaft, a square groove is opened on the secondary structure.
[0035] When the secondary structure masonry wall is completed and various wiring boxes need to be embedded by opening holes on the wall, the specific operation method of the concealed wiring box square hole opener for the secondary structure of the present utility model is as follows:
[0036] 1. First, clamp the drill bit in the drill chuck of the electric drill through the central shaft rod.
[0037] 2. Select a limiting square frame with the same size as the concealed wiring box, place the limiting square frame on the masonry wall surface where the wiring box square hole needs to be opened, and make the teeth of the drill bit abut against the masonry wall surface.
[0038] 3. Turn on the electric drill and press it appropriately. When the drilling depth of the opener reaches the scale line corresponding to the height of the wiring box, pull out the opener and turn off the power supply of the electric drill.
[0039] 4. Use a chisel to chisel out the remaining blocks in the wall hole after the opener opens the hole, and then install the pre-prepared concealed wiring box into the square hole opened on the wall.
[0040] The concealed wiring box square hole opener for the secondary structure of the present utility model can open a square hole on the secondary masonry wall at one time, which is convenient, fast and saves labor costs.
[0041] The square hole cutter for flush-mounted junction boxes on the secondary structure of the utility model creates a square hole on the secondary masonry wall, with the perimeter being regular, high hole-opening quality, and strong aesthetics.
[0042] The square hole cutter for flush-mounted junction boxes on the secondary structure of the utility model cuts holes on the secondary masonry wall according to the size of the flush-mounted junction box, avoiding cutting more blocks and saving the workload of filling gaps in the later stage.
[0043] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.
Claims
1. A flush-mounted wire box square hole cutter for secondary structures, characterized in that, Comprising: A hand drill; A drill bit, the cross-section of the drill bit being in the shape of a Reuleaux triangle, the drill bit having opposite first and second ends, a receiving groove being formed at the first end, a plurality of teeth being formed on the outer edge of the end face of the first end, an eccentric shaft being connected to the second end, the eccentric shaft being connected to a central shaft rod through a transmission inclined shaft, the central shaft rod being coaxially arranged with the drill bit, and the central shaft rod being detachably installed in the drill chuck of the hand drill; A limiting square frame coaxially arranged with the drill bit, elastically installed on the housing of the hand drill and movably sleeved outside the drill bit.
2. The concealed wiring box square hole cutter for secondary structures according to claim 1, wherein The limiting square frame is square, the side length of the limiting square frame being adapted to the width of the drill bit, and the size of the limiting square frame being adapted to the size of the flush-mounted junction box.
3. The concealed wiring box square hole cutter for secondary structures according to claim 1, wherein The limiting square frame is connected with a plurality of socket sleeves, the socket sleeves being arranged in the same direction as the drill bit, the housing being connected with a plurality of insertion rods, the insertion rods being movably inserted into the socket sleeves, and a support spring being connected between the socket sleeves and the insertion rods.
4. The concealed wiring box square hole cutter for secondary structures according to claim 3, wherein, The outer diameter size of the insertion rod is adapted to the inner diameter size of the socket sleeve.
5. The concealed wiring box square hole cutter for secondary structures according to claim 3, characterized in that, The socket sleeve has an open end and a closed end, the closed end being connected to the limiting square frame, and the support spring being connected between the closed end and the insertion rod.
6. The concealed wiring box square hole cutter for secondary structures according to claim 1, characterized in that, Scale lines are provided on the drill bit, the scale lines being arranged along the length direction of the drill bit.