High-safety protective cover for electric tool

Abstract

The high-safety protective cover for the electric tool comprises a machine shell, the right end of the machine shell is connected with a grip, the bottom of the grip is provided with a start-stop switch, the right end of the grip is connected with a power source, the outer wall of the machine shell is connected with an auxiliary handle, and the bottom of the machine shell is provided with a head shell cover. A driving motor is arranged in the machine shell, the output end of the bottom of the driving motor is connected with a rotating shaft, the lower end, extending out of the head shell cover, of the rotating shaft is connected with a mounting base, a saw blade is detachably mounted at the bottom of the mounting base, and the outer wall of the head shell cover is connected with a protective cover assembly; the protective cover assembly is reasonable in structural design, equipment cannot be started when the protective cover assembly is not installed or not installed in a standard mode, illegal operation of workers can be effectively avoided, and mechanical injury accidents are effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of protective covers, and in particular to a high-safety protective cover for electric tools. Background Art

[0002] As an indispensable part of modern work scenes, power tools have greatly improved our work efficiency. The rotating parts of power tools, such as electric drills, grinders, and electric saws, should have protective covers. Their function is to protect users from high-speed rotating parts. Durability and other factors should be considered when choosing. The rotating parts of these tools, such as the drill bit of an electric drill, the grinding wheel of a grinder, and the saw blade of an electric saw, may bring serious safety hazards when rotating at high speeds. Therefore, it is particularly important to install protective covers for these rotating parts.

[0003] When the drill bit of an electric drill rotates at high speed, if it accidentally touches the human body or other objects, it may cause serious injury. Therefore, a protective cover should be installed on the drill bit part of the electric drill to prevent accidents. When the grinding wheel of a grinder rotates at high speed, a large amount of debris and sparks will be generated. If not protected, they may splash onto the surrounding work area and even cause damage to the operator's face. Therefore, a protective cover should be installed on the grinding wheel part of the grinder to protect the safety of the operator. During the cutting process of the saw blade of an electric saw, the high-speed rotating teeth may splash out wood chips or other fragments, which may cause damage to the operator. Therefore, a protective cover should be installed on the saw blade part of the electric saw to reduce the risk of splashing debris.

[0004] The main function of the protective cover is to prevent high-speed rotating parts from contacting the human body or other objects when the power tool is running, thereby avoiding injuries. At the same time, the protective cover can also reduce the splash of debris and sparks, keeping the working area clean and safe. And as a safety protection facility, the protective cover can not only effectively block the limbs of personnel from the slicer, wheel, and belt to protect personnel from mechanical injuries, but also prevent other materials from invading the slicer, wheel, and belt operation area to prevent the machine from malfunctioning.

[0005] When choosing a protective cover, we need to pay attention to the following points:

[0006] 1. Durability: The protective cover should be highly durable and able to withstand the vibration and impact generated by the power tool during operation;

[0007] 2. Adaptability: The protective cover should match the model and specifications of the power tool to ensure a firm and stable installation;

[0008] 3. Safety: The protective cover should be designed reasonably to avoid sharp edges or protrusions during use to prevent accidental cuts.

[0009] In short, installing a protective cover on the rotating part of the power tool is an important measure to ensure the safety of the user. When selecting and using a protective cover, we should fully consider factors such as its durability, adaptability and safety to ensure that the power tool always remains safe and stable during use.

[0010] However, currently, protective covers are mainly installed on the machine body or its periphery when in use, and are not effectively interlocked with the power mechanism. When the protective cover of the equipment is missing or not installed according to the specified angle and other specifications, the equipment can still work, which poses a great hidden danger to the operator, other personnel and the site, and is not conducive to on-site production safety. To this end, we proposed a high-safety protective cover for power tools. Summary of the invention

[0011] The purpose of the present invention is to provide a high-safety protective cover for an electric tool to overcome the technical problems existing in the prior art.

[0012] In order to achieve the above technical objectives and the above technical effects, the present invention provides the following technical solutions:

[0013] A high-safety protective cover for an electric tool comprises a casing, a handle is connected to the right end of the casing, a start-stop switch is installed at the bottom of the handle, a power supply is connected to the right end of the handle, an auxiliary handle is connected to the outer wall of the casing, a head casing cover is installed at the bottom of the casing, a driving motor is arranged in the casing, a rotating shaft is connected to the bottom output end of the driving motor, a mounting seat is connected to the lower end of the rotating shaft extending out of the head casing cover, a saw blade is detachably installed at the bottom of the mounting seat, and a protective cover assembly is connected to the outer wall of the head casing cover.

[0014] Preferably, in a high-safety protective cover for an electric tool, the protective cover assembly includes a protective cover body, a protective cover clamp is welded to the inner wall of the protective cover body, a mounting hole is opened at the left end of the protective cover clamp, a fastening bolt passes through the mounting hole, a plurality of limiting protrusions are connected to the inner wall of the protective cover clamp, and a clearance opening is symmetrically opened in the inner wall of the protective cover clamp, a metal spring is connected in the clearance opening, and a conductive wire harness is connected between the outer walls of the two metal springs.

[0015] Preferably, in a high-safety protective cover for an electric tool, a plurality of positioning grooves are circumferentially provided on the outer wall of the head shell cover, metal protrusions are embedded in the front and rear ends of the head shell cover, and the two metal protrusions extend into the ends of the head shell cover and are connected in series via wires to drive the motor, power supply and start-stop switch.

[0016] Preferably, in a high-safety protective cover for an electric tool, four limiting protrusions and four positioning grooves are provided, and the limiting protrusions abut against the inner walls of the corresponding positioning grooves.

[0017] Preferably, in a high-safety protective cover for an electric tool, the protective cover body is manufactured by integral stamping, and the protective cover body covers the right half of the saw blade.

[0018] Preferably, in a high-safety protective cover for an electric tool, the head shell cover, the rotating shaft and the saw blade are arranged coaxially.

[0019] Preferably, in a high-safety protective cover for an electric tool, the outer wall of the grip and the auxiliary handle are both connected with a non-slip insulating rubber sleeve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The structural design of the present invention is reasonable. The protective cover assembly is provided with several mounting holes and limiting protrusions on the protective cover clamp according to the angle of standard use, which can correspond to the several metal protrusions and positioning grooves on the head shell cover, so as to facilitate the positioning and installation of the protective cover clamp to avoid displacement. With the metal spring, conductive harness and wire, it can form an electrical connection with the drive motor, power supply and start-stop switch. At this time, whether the protective cover assembly is installed or not is directly related to whether the drive motor can be started smoothly, so that the equipment cannot be started when the protective cover assembly is not installed or installed improperly, effectively avoiding mechanical injury accidents;

[0022] 2. When the protective cover assembly is not installed on the electric tool of the present invention or the protective cover assembly is not installed in place, all the concave and convex positions on the protective cover clamp cannot form effective contact with the corresponding positions of the head shell cover, and the metal protrusions in the head shell cover cannot form a path with the drive motor and the start-stop switch for potential connection. Even if the power supply of the electric tool is installed and the start-stop switch is turned by hand, the drive motor cannot work normally, resulting in the electric tool being unable to be used, which can effectively prevent staff from operating in violation of regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, 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 paying creative work.

[0024] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0027] Figure 4 It is a schematic diagram of the internal structure of the casing in the present invention;

[0028] Figure 5 for Figure 4 Schematic diagram of the cross section at BB.

[0029] In the figure: 1. casing; 2. handle; 3. start / stop switch; 4. power supply; 5. auxiliary handle; 6. head cover; 7. drive motor; 8. rotating shaft; 9. mounting seat; 10. saw blade; 11. guard assembly; 12. non-slip insulating rubber sleeve; 61. positioning groove; 62. metal protrusion; 111. guard body; 112. guard clamp; 113. mounting hole; 114. fastening bolt; 115. limit protrusion; 116. clearance port; 117. metal spring; 118. conductive wiring harness. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-5 As shown, this embodiment is a high-safety protective cover for an electric tool, including a casing 1, a handle 2 is connected to the right end of the casing 1, a start-stop switch 3 is installed at the bottom of the handle 2, a power supply 4 is connected to the right end of the handle 2, an auxiliary handle 5 is connected to the outer wall of the casing 1, a head casing cover 6 is installed at the bottom of the casing 1, a driving motor 7 is arranged in the casing 1, a rotating shaft 8 is connected to the bottom output end of the driving motor 7, the lower end of the rotating shaft 8 extending out of the head casing cover 6 is connected to a mounting seat 9, a saw blade 10 is detachably installed at the bottom of the mounting seat 9, and a protective cover assembly 11 is connected to the outer wall of the head casing cover 6.

[0032] The protective cover assembly 11 includes a protective cover body 111, the inner wall of which is welded a protective cover clamp 112, a mounting hole 113 is provided at the left end of the protective cover clamp 112, a fastening bolt 114 passes through the mounting hole 113, a plurality of limiting protrusions 115 are connected to the inner wall of the protective cover clamp 112, a clearance opening 116 is symmetrically provided on the inner wall of the protective cover clamp 112, a metal spring 117 is connected to the inner wall of the clearance opening 116, and a conductive wire harness 118 is connected between the outer walls of the two metal springs 117.

[0033] The outer wall of the head shell cover 6 is circumferentially provided with a plurality of positioning grooves 61, and the front and rear ends of the head shell cover 6 are embedded with metal protrusions 62. The two metal protrusions 62 extend into the ends of the head shell cover 6 and are connected in series with the drive motor 7, the power supply 4 and the start-stop switch 3 through wires. After the protective cover assembly 11 is installed, the two metal protrusions 62 form a passage with the drive motor 7, the power supply 4 and the start-stop switch 3, which can control the working state of the drive motor 7.

[0034] There are four limiting protrusions 115 and four positioning grooves 61 , and the limiting protrusions 115 abut against the inner walls of the corresponding positioning grooves 61 , which facilitates the installation of the protective cover clamp 112 and avoids deviation.

[0035] The protective cover body 111 is made by stamping and has high structural strength. The protective cover body 111 covers the right half of the saw blade 10 and does not interfere with the operation of the tool during safety protection.

[0036] The head shell cover 6, the rotating shaft 8 and the saw blade 10 are arranged coaxially to ensure that the electric tool is stable and reliable when in use.

[0037] The outer walls of the grip 2 and the auxiliary handle 5 are both connected with anti-skid insulating rubber sleeves 12 to increase friction and facilitate holding and use.

[0038] The specific implementation of this embodiment is as follows:

[0039] When the device is in use, the head shell cover 6 is installed at the bottom of the casing 1, the saw blade 10 is installed in the mounting seat 9, the protective cover clamp 112 is clamped on the outside of the head shell cover 6, and the limiting protrusion 115 is aligned with the positioning groove 61. The protective cover clamp 112 is tightened by the fastening bolt 114, and the protective cover clamp 112 can be fixedly installed on the outside of the head shell cover 6. At this time, one end of the metal protrusion 62 extends into the corresponding yielding opening 116, and the metal spring 117 abuts the metal protrusion 62. The two metal springs 117 are electrically connected through the conductive wire harness 118. The ends of the two metal protrusions 62 extending into the head shell cover 6 are connected in series with the drive motor 7, the power supply 4 and the start-stop switch 3 through the wire, so that a closed loop can be formed, which is convenient for controlling the operation of the drive motor 7;

[0040] In the present invention, the protective cover assembly 11 is provided with several mounting holes 113 and limiting protrusions 115 on the protective cover clamp 112 according to the angle of standard use, which can correspond to the several metal protrusions 62 and the positioning grooves 61 on the head shell cover 6, and cooperate with the metal spring 117, the conductive wire harness 118 and the wire to form an electrical connection with the drive motor 7, the power supply 4 and the start-stop switch 3. At this time, whether the protective cover assembly 11 is installed or not is directly related to whether the drive motor 7 can be started smoothly, so that the equipment cannot be started when the protective cover assembly 11 is not installed or installed improperly, effectively avoiding mechanical injury accidents. For equipment that has not yet been produced and needs a protective cover, it can be redesigned to have this protection function, and for equipment that has already been produced and needs a protective cover, the corresponding components and systems can be modified to have this protection function.

[0041] When the power tool is not installed with the protective cover assembly 11 or the protective cover assembly 11 is not installed in place, all the concave and convex positions on the protective cover clamp 112 cannot form effective contact with the corresponding positions of the head shell cover 6, and the metal protrusion 62 in the head shell cover 6 cannot form a path with the drive motor 7 and the start-stop switch 3 for potential connection. Even if the power supply 4 is installed on the power tool and the start-stop switch 3 is turned by hand, the drive motor 7 cannot work normally, resulting in the power tool being unusable. When the protective cover assembly 11 is installed in place, the protective cover clamp 112 is in effective contact with the head shell cover 6, and the metal protrusion 62, the drive motor 7, the power supply 4 and the start-stop switch 3 form a path. After the start-stop switch 3 is turned and closed by hand, the power tool can start and operate normally.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-safety protective cover for an electric tool, comprising a housing (1), characterized in that: The right end of the casing (1) is connected to a handle (2), a start-stop switch (3) is installed at the bottom of the handle (2), the right end of the handle (2) is connected to a power supply (4), the outer wall of the casing (1) is connected to an auxiliary handle (5), the bottom of the casing (1) is installed with a head cover (6), a driving motor (7) is arranged in the casing (1), the bottom output end of the driving motor (7) is connected to a rotating shaft (8), the lower end of the rotating shaft (8) extending out of the head cover (6) is connected to a mounting seat (9), a saw blade (10) is detachably installed at the bottom of the mounting seat (9), and the outer wall of the head cover (6) is connected to a protective cover assembly (11).

2. The high-safety protective cover for electric tools according to claim 1, characterized in that: The protective cover assembly (11) comprises a protective cover body (111), the inner wall of which is welded a protective cover clamp (112), a mounting hole (113) is provided at the left end of the protective cover clamp (112), a fastening bolt (114) passes through the mounting hole (113), a plurality of limiting protrusions (115) are connected to the inner wall of the protective cover clamp (112), a clearance opening (116) is symmetrically provided on the inner wall of the protective cover clamp (112) at the front and rear sides, a metal spring sheet (117) is connected to the inside of the clearance opening (116), and a conductive wire harness (118) is connected between the outer walls of the two metal spring sheets (117).

3. A high-safety protective cover for an electric tool according to claim 2, characterized in that: The outer wall of the head shell cover (6) is provided with a plurality of positioning grooves (61) in the circumferential direction, and the front and rear ends of the head shell cover (6) are embedded with metal protrusions (62). Two metal protrusions (62) extend into the ends of the head shell cover (6) and are connected in series via wires to the drive motor (7), the power supply (4) and the start-stop switch (3).

4. The high-safety protective cover for electric tools according to claim 3, characterized in that: Four of the limiting protrusions (115) and the positioning grooves (61) are provided, and the limiting protrusions (115) abut against the inner walls of the corresponding positioning grooves (61).

5. The high-safety protective cover for electric tools according to claim 3, characterized in that: The protective cover body (111) is manufactured by stamping and forming in one piece, and the protective cover body (111) covers the right half of the saw blade (10).

6. The high-safety protective cover for electric tools according to claim 1, characterized in that: The head shell cover (6), the rotating shaft (8) and the saw blade (10) are arranged coaxially.

7. The high-safety protective cover for an electric tool according to claim 1, characterized in that: The outer walls of the grip (2) and the auxiliary handle (5) are both connected with anti-slip insulating rubber sleeves (12).

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