Tapping device and wall drilling device suitable for switch box bottom

Abstract

The utility model relates to a tapper and a wall drilling device suitable for a switch box bottom. The tapper comprises a tapper body and a positioning drill bit, the tapper and the wall drilling device suitable for the switch box bottom are simple in structure, and have the characteristics of high efficiency, time saving, cost reduction, efficiency improvement and the like; the shape of the tapper body is designed into the frame structure which is the same as or similar to the shape of the switch box bottom, and the mounting hole punched by the tapper is of the rectangular structure which is the same as or similar to the shape of the switch box bottom in one step, so that the time for planning the size of the mounting hole in a wall body can be saved; excessive damage of the tapper to the wall body can be reduced; after the switch box bottom is placed, the switch box bottom is fixed in the mounting hole through cement mortar, so that the mounting hole and the switch box bottom are tightly matched and connected, and the switch box bottom and the mounting hole can be firmly mounted and are not easy to loosen; and moreover, the possibility that air flows and dust enters the mounting hole is reduced, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of decoration tools, and more specifically to a hole opener and a wall drilling device suitable for the bottom of a switch box. Background Art

[0002] A hole opener, also known as a hole saw or hole saw, is a special circular saw used for cutting circular holes in modern decoration. A hole opener is a very important drilling tool, usually installed on tools such as an electric drill, impact drill, or radial drill, and then used to process holes on walls, floors, or other objects. For example, before installing an 86 switch box on a wall, you need to first plan a drilling range on the wall according to the size of the 86 switch box bottom, and then use a drill with a hole opener to drill multiple holes in the planned range of the wall until the installation hole is larger than the size of the 86 switch box bottom, and then install the 86 switch box bottom in the hole, and finally pour concrete to seal the edges and fix it.

[0003] However, most of the existing hole openers include a cylindrical sleeve and a positioning column fixedly connected to the sleeve. The hole opener is driven by a rotating motor to rotate at high speed to punch a circular hole on the wall. However, since the bottom of the 86 switch box is square as a whole and the area of ​​the sleeve is smaller than the area of ​​the bottom of the 86 switch box, it is necessary to punch multiple times to punch a mounting hole that can install the bottom of the 86 switch box, and the work efficiency is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hole opener and a wall drilling device suitable for the bottom of a switch box in view of the above-mentioned defects of the prior art.

[0005] On the one hand, the technical solution adopted by the utility model to solve its technical problem is: a hole opener suitable for the bottom of a switch box, which includes a hole opener body and a positioning drill bit fixedly connected to the hole opener body; the hole opener body includes a frame structure arranged in a rectangular shape; the shape of the frame structure is the same as or similar to the shape of the bottom of the switch box; a hollow cavity for feeding waste materials is formed in the middle of the frame structure; a blade portion is provided at the front end of the frame structure around the hollow cavity, and a connecting portion fixedly connected to the positioning drill bit is provided at the end opposite to the blade portion;

[0006] The hole opener for the bottom of a switch box of the utility model, wherein the frame structure is formed by at least four flat fixing plates fixedly connected in sequence; all the fixing plates are mutually enclosed to form the hollow cavity;

[0007] The hole opener for the bottom of a switch box of the utility model, wherein the positioning drill bit is arranged in the middle of the hollow cavity and extends toward the front end of the hole opener body; at least a part of one end of the positioning drill bit protrudes from the hollow cavity;

[0008] The hole opener for the bottom of a switch box of the utility model, wherein the connecting portion comprises a plurality of connecting rods extending from the end surface of the frame structure facing away from the blade portion toward the positioning drill bit; the positioning drill bit is fixedly connected to the frame structure through the plurality of connecting rods;

[0009] The hole opener suitable for the bottom of a switch box of the utility model, wherein the connecting rod and the end surface of the frame structure facing away from the blade portion are arranged at an angle;

[0010] The hole opener for the bottom of a switch box of the utility model, wherein the blade portion comprises a plurality of teeth spaced and evenly distributed; the teeth are arranged in a conical or rectangular shape protruding toward the front end direction of the frame structure;

[0011] The hole opener for the bottom of a switch box of the utility model is characterized in that a leveler is installed on the inner wall of one end of any of the fixing plates away from the blade portion;

[0012] The hole opener suitable for the bottom of the switch box of the utility model, wherein a through hole connected to the hollow cavity is provided between two adjacent connecting rods;

[0013] The utility model discloses a hole opener suitable for the bottom of a switch box, wherein the end surface of the tooth head of the positioning drill bit is a plane, and the tooth head of the positioning drill bit is in a horizontal ruler-shaped structure as a whole.

[0014] On the other hand, the utility model further provides a wall drilling device, characterized in that the wall drilling device comprises a hole opener as described in any one of the above, and a driving component for driving the hole opener to impact forward.

[0015] The beneficial effects of the utility model are as follows: the hole opener and the wall drilling device suitable for the bottom of the switch box have the advantages of simple structure, high efficiency, time saving, cost reduction and efficiency improvement, etc.; by designing the shape of the hole opener body to be a frame structure that is the same as or similar to the shape of the bottom of the switch box, the hole opener impacts the wall through external continuous impact force, so that the installation hole punched by the hole opener is once formed into a rectangular structure that is the same as or similar to the shape of the bottom of the switch box, which not only saves the time of planning the size of the installation hole on the wall, but also reduces the excessive damage of the hole opener to the wall; after the bottom of the switch box is placed, the bottom of the switch box can be fixed in the installation hole by cement mortar, so that the installation hole and the bottom of the switch box are tightly matched and connected, which not only ensures that the bottom of the switch box and the installation hole are firmly installed and not easy to loosen; but also reduces the possibility of air flow and dust entering the installation hole, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 This is a schematic diagram of the structure of a hole opener suitable for the bottom of a switch box in a preferred embodiment of the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of a hole opener suitable for the bottom of a switch box in a preferred embodiment of the utility model. Figure 2 . DETAILED DESCRIPTION

[0019] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0022] Moreover, the terms "up, down, front, back, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0024] Embodiment 1:

[0025] A preferred embodiment of the utility model is a hole opener suitable for the bottom of a switch box, such as Figure 1-2 As shown, it includes a hole opener body 10 and a positioning drill 20 fixedly connected to the hole opener body 10; the hole opener body 10 includes a frame structure arranged in a rectangular shape; the shape of the frame structure is the same as or similar to the shape of the switch box bottom; the mounting hole punched by the hole opener is formed in one step, and the punching efficiency is high. It is worth noting that the size of the frame structure is larger than the size of the switch box bottom, so that the size of the mounting hole punched by the hole opener is larger than the outer contour size of the switch box bottom, so that the switch box bottom can be installed in the mounting hole. Among them, if the switch box bottom adopts an 86-type switch bottom box, the frame structure can be a square structure with the same shape as the 86-type switch bottom box; if the switch box bottom adopts a 120-type switch bottom box, the frame structure can be a rectangular structure with the same shape as the 120-type switch bottom box, thereby ensuring that the shape of the mounting hole punched by the hole opener is the same as the outer contour shape of the switch box bottom; the number of sides of the frame structure is the same as the number of sides of the switch box bottom, and the corresponding angles of the two are equal, and the corresponding sides of the two are proportional, and the outer contour shape of the frame structure is similar to the outer contour shape of the switch box bottom.

[0026] Furthermore, a hollow cavity for feeding waste materials is formed in the middle of the frame structure; when the hole opener body 10 is driven by the vibration of an external motor to directly impact and punch a hole toward the wall, the excess wall waste on the wall automatically enters the hollow cavity in the frame structure, which is convenient for the hole opener body to move toward the wall to punch a hole. It is worth noting that the hole opener in the utility model does not rotate during the punching process, thereby ensuring that the punched installation hole is rectangular. A blade portion is provided at the front end of the frame structure around the hollow cavity, and a connection portion fixedly connected to the positioning drill bit 20 is provided at the end facing away from the blade portion, so that the structure is stable. The blade portion can complete the drilling and cutting of the installation hole in a short time, which can effectively improve the work efficiency of punching.

[0027] The hole opener and wall drilling device suitable for the switch box bottom have the advantages of simple structure, high efficiency, time saving, cost reduction and efficiency improvement, etc.; by designing the shape of the hole opener body to be a frame structure that is the same as or similar to the shape of the switch box bottom, the hole opener impacts the wall through external continuous impact force, so that the installation hole punched by the hole opener is once formed into a rectangular structure that is the same as or similar to the shape of the switch box bottom, which not only saves the time of planning the size of the installation hole on the wall, but also reduces the excessive damage of the hole opener to the wall; after the switch box bottom is placed, the switch box bottom can be fixed in the installation hole by cement mortar, so that the installation hole and the switch box bottom are closely matched and connected, which not only ensures that the switch box bottom and the installation hole are firmly installed and not easy to loosen; but also reduces the possibility of air flow and dust entering the installation hole, thereby improving the safety of use.

[0028] Furthermore, the frame structure is formed by at least four flat fixed plates 11 that are fixedly connected in sequence; all the fixed plates 11 are mutually enclosed to form a hollow cavity. Among them, the fixed plates 11 are made of steel or alloy materials with relatively high hardness; optionally, a leveler (not shown) is installed on the inner wall of one end of any fixed plate 11 away from the blade portion to facilitate positioning the frame structure in a horizontal state and ensure that the holes punched by the puncher are not tilted. In one embodiment, the head and tail ends of two adjacent fixed plates can be fixed by welding; optionally, the frame structure can also be integrally formed by a casting process, and the structure is stable.

[0029] Furthermore, the positioning drill bit 20 is arranged in the middle of the hollow cavity and extends toward the front end of the hole opener body 10; the positioning drill bit 20 is located in the middle of the hole opener, which can ensure that the center of the installation hole coincides with the positioning drill bit, and can prevent the hole opener from shifting during the drilling process; at least a part of one end of the positioning drill bit 20 protrudes from the hollow cavity, and the positioning performance is good; the positioning drill bit 20 is arranged in a columnar shape, and its outer surface facing the bottom end of the switch box is provided with an external thread, which is convenient for positioning and drilling; the end face of the tooth head of the positioning drill bit 20 is a plane, and the tooth head is a horizontal ruler-shaped structure as a whole, and its width is smaller than the diameter of the positioning drill bit 20; it not only increases the contact area between the positioning drill bit 20 and other objects such as the wall or the ground, making the connection between the two more stable, but also can ensure that the hole opener body and other objects such as the wall or the ground remain in a vertical state, with good positioning performance, and ensuring that the depth of the installation hole drilled by the hole opener is consistent. It is worth noting that the positioning drill bit 20 and the hole opener body 10 are both made of rigid materials, with relatively high hardness and strength, and strong durability.

[0030] Furthermore, the connection portion includes a plurality of connecting rods 12 extending from the end surface of the frame structure facing away from the blade portion toward the positioning drill bit 20; the positioning drill bit 20 is fixedly connected to the frame structure through the plurality of connecting rods 12. In one embodiment, four connecting rods 12 are provided, and one end of the four connecting rods 12 is respectively welded and fixed to the four vertices of the frame structure, and the other end is welded and fixed to the positioning drill bit 20, so that the structure is stable and the cost is low. Optionally, one end of the plurality of connecting rods 12 can also be respectively welded and fixed to the middle of the fixing plate 11, and the other end is welded and fixed to the positioning drill bit 20.

[0031] Furthermore, the connecting rod 12 is arranged at an angle with the end face of the frame structure facing away from the blade, thereby providing support force to the hole opener body 10 as a whole, so that the vibration force received by the hole opener body 10 as a whole during the hole opening process is more uniform, thereby effectively increasing the service life of the hole opener body 10.

[0032] Furthermore, the blade portion includes a plurality of teeth 13 that are spaced and evenly distributed; the teeth 13 are arranged in a conical or rectangular shape that protrudes toward the front end of the frame structure. The plurality of teeth 13 can better control the position of the material, making the hole opening more accurate; during the hole opening process, the material is easily moved or offset due to the cutting force, and the teeth 13 can exert a certain pressure on the wall or the ground, so that the hole punched by the blade portion is close to the outer edge of the frame structure, thereby ensuring the accuracy of the hole opening and further preventing the hole opener body from moving; the teeth 13 can be quickly fixed and positioned to keep it stable during the hole opening process, thereby improving work efficiency.

[0033] Furthermore, the height of the teeth 13 is less than half of the height of the frame structure, and the structure of the hole opener body is more stable.

[0034] Furthermore, a through hole 14 connected to the hollow cavity is provided between two adjacent connecting rods 12, which can not only reduce the overall weight of the hole opener and the burden on the arms of construction workers, but also save materials and reduce costs.

[0035] Embodiment 2

[0036] This embodiment provides a wall drilling device, which includes a hole opener as described in the first embodiment, and a driving component that drives the hole opener to impact forward, wherein the driving component can be a vibration motor in the prior art.

[0037] The wall drilling device has a simple structure, reduces costs and increases efficiency. By designing the shape of the hole opener body to be a frame structure that is identical or similar to the shape of the switch box bottom, the hole opener impacts the wall through external continuous impact force, so that the installation hole punched by the hole opener is once formed into a rectangular structure that is identical or similar to the shape of the switch box bottom, which not only saves time for planning the size of the installation hole on the wall, but also reduces excessive damage to the wall by the hole opener; after the switch box bottom is placed, the switch box bottom is fixed in the installation hole by cement mortar, so that the installation hole and the switch box bottom are tightly matched and connected, which not only ensures that the switch box bottom and the installation hole are firmly installed and not easy to loosen; but also reduces the possibility of air flow and dust entering the installation hole, thereby improving safety in use.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A hole opener suitable for the bottom of a switch box, characterized in that: It comprises a hole opener body and a positioning drill bit fixedly connected to the hole opener body; the hole opener body comprises a frame structure arranged in a rectangular shape; the shape of the frame structure is the same as or similar to the shape of the bottom of the switch box; a hollow cavity for feeding waste materials is formed in the middle of the frame structure; a blade portion is arranged around the hollow cavity at the front end of the frame structure, and a connecting portion fixedly connected to the positioning drill bit is arranged at the end opposite to the blade portion.

2. The hole opener for the bottom of a switch box according to claim 1, characterized in that: The frame structure is formed by at least four flat fixing plates that are fixedly connected in sequence; all the fixing plates are mutually enclosed to form the hollow cavity.

3. The hole opener for the bottom of a switch box according to claim 1 or 2, characterized in that: The positioning drill bit is arranged in the middle of the hollow cavity and extends toward the front end of the hole opener body; at least a part of one end of the positioning drill bit protrudes from the hollow cavity.

4. The hole opener for the bottom of a switch box according to claim 3, characterized in that: The connecting portion includes a plurality of connecting rods extending from the end surface of the frame structure facing away from the blade portion toward the positioning drill bit; the positioning drill bit is fixedly connected to the frame structure via the plurality of connecting rods.

5. The hole opener for the bottom of a switch box according to claim 4, characterized in that: The connecting rod and the end surface of the frame structure facing away from the blade portion are arranged at an angle.

6. The hole opener for the bottom of a switch box according to any one of claims 1, 2, 4 and 5, characterized in that: The blade portion includes a plurality of teeth that are spaced apart and evenly distributed; the teeth are arranged in a conical or rectangular shape that protrudes toward the front end of the frame structure.

7. The hole opener for the bottom of a switch box according to claim 2, characterized in that: A leveler is installed on the inner wall of one end of any of the fixing plates away from the blade portion.

8. The hole opener for the bottom of a switch box according to claim 5, characterized in that: A through hole connected to the hollow cavity is provided between two adjacent connecting rods.

9. The hole opener for the bottom of a switch box according to claim 8, characterized in that: The end surface of the tooth head of the positioning drill bit is a plane, and the tooth head of the positioning drill bit is an overall horizontal ruler-shaped structure.

10. A wall drilling device, characterized in that: The wall drilling device comprises the hole opener as described in any one of claims 1 to 9, and a driving component for driving the hole opener to impact forward.

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