CN215700597U

CN215700597U - Accidental falling automatic power-off protection angle grinder

Info

Publication number: CN215700597U
Application number: CN202122265701.6U
Authority: CN
Inventors: 曾细杰
Original assignee: Fujian Huian Kynko Electrical Machinery Co ltd
Current assignee: Fujian Huian Kynko Electrical Machinery Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-02-01
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to the field of angle grinders, in particular to an accidental landing automatic power-off protection angle grinder which comprises a main body, wherein a grinding wheel is arranged on the main body, a cover body is arranged above the main body corresponding to the grinding wheel, a plurality of stop holes are annularly arranged on the grinding wheel, and a stop mechanism is arranged at the position of the cover body corresponding to the stop holes. The utility model is provided with the stalling mechanism on the cover body, and the clamping block and the electromagnet of the stalling mechanism can be rapidly pushed to the stalling hole under the action of the elasticity of the spring of the stalling mechanism when the angle grinder is powered off, so that the grinding wheel can be rapidly stopped to prevent the grinding wheel from continuously rotating due to inertia, the safety performance of the grinding wheel is improved, and meanwhile, the clamping block can be guided under the action of the matching of the circular table hole and the circular table column, so that the clamping block is more easily embedded into the stalling hole.

Description

Accidental falling automatic power-off protection angle grinder

Technical Field

The utility model relates to the technical field of angle grinders, in particular to an angle grinder with automatic power-off protection when accidentally falling to the ground.

Background

The electric angle grinder is a tool for grinding, cutting, derusting and polishing metal components by using a sheet grinding wheel, a rubber grinding wheel, a steel wire wheel and the like which rotate at a high speed; the angle grinder is suitable for cutting, grinding and brushing metal and stone materials, in order to prevent accidental falling of the traditional angle grinder, a press type switch is arranged at the switch, namely, the angle grinder can be electrified only by pressing the switch, and the power of the angle grinder can be cut off if fingers are separated from the switch; however, when the angle grinder works, after the angle grinder is powered off due to accidental falling, the grinding wheel can continuously rotate under the action of inertia force, and the continuous rotation can cause certain danger of falling.

SUMMERY OF THE UTILITY MODEL

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The utility model aims to overcome the defects and provide an accidental landing automatic power-off protection angle grinder so as to solve the problem that the grinding wheel of the conventional angle grinder can continuously rotate when the power is off.

In order to achieve the purpose, the technical solution of the utility model is as follows: an accidental landing automatic power-off protection angle grinder comprises a main body, wherein a grinding wheel is arranged on the main body, a cover body is arranged above the main body corresponding to the grinding wheel, a plurality of stop holes are annularly arranged on the grinding wheel, and a stop mechanism is arranged on the cover body corresponding to the stop holes;

the stalling mechanism comprises a shell, the shell is fixed on the cover body, an inward-concave movable groove is formed in the upper surface of the shell, the groove bottom of the movable groove is penetrated, a movable rod is embedded in the movable groove, one end, close to a grinding wheel, of the movable rod penetrates through the groove bottom of the movable groove, a clamping block is arranged at one end, close to the grinding wheel, of the movable rod, the clamping block is embedded into a stalling hole, a limiting block is arranged at the other end of the movable rod, the limiting block is embedded into the movable groove, the limiting block is matched with the movable groove, a spring is embedded in the movable groove, one end of the spring is supported on the limiting block, the other end of the spring is supported on an installation cover, the installation cover is fixed on a notch of the movable groove, an electromagnet is fixed at the position, corresponding to the clamping block, of the inner surface of the cover body, and the clamping block is adsorbed by the electromagnet.

As a further improvement, one end of the stalling hole close to the cover body is provided with a circular truncated cone hole, the aperture of the circular truncated cone hole is gradually increased from one end to the other end, the end with the small aperture of the circular truncated cone hole is connected with the stalling hole, and the end with the large aperture of the circular truncated cone hole faces the cover body.

As a further improvement, one end of the clamping block, which is close to the rotation stopping hole, is provided with a circular table column, the diameter of the circular table column is gradually reduced from one end to the other end, the end with the large diameter of the circular table column is connected with the clamping block, and the end with the small diameter of the circular table column faces the rotation stopping hole.

As a further improvement, one end of the limiting block, which is far away from the movable rod, is provided with a guide rod, a guide hole penetrates through the position, corresponding to the guide rod, of the mounting cover, and the guide rod penetrates through the guide hole.

As a further improvement, a yielding hole penetrates through the center of the electromagnet, and the movable rod penetrates through the yielding hole.

As a further improvement, a motor and a circuit board are installed in the main body, the motor is in transmission connection with the grinding wheel, a controller is arranged on the circuit board, and the controller is electrically connected with the electromagnet.

By adopting the technical scheme, the utility model has the beneficial effects that: the utility model is provided with the stalling mechanism on the cover body, and the clamping block and the electromagnet of the stalling mechanism can be rapidly pushed to the stalling hole under the action of the elasticity of the spring of the stalling mechanism when the angle grinder is powered off, so that the grinding wheel can be rapidly stopped to prevent the grinding wheel from continuously rotating due to inertia, the safety performance of the grinding wheel is improved, and meanwhile, the clamping block can be guided under the action of the matching of the circular table hole and the circular table column, so that the clamping block is more easily embedded into the stalling hole.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Clearly, such objects and other objects of the present invention will become more apparent from the detailed description of the preferred embodiments hereinafter set forth in the various drawings and drawings.

These and other objects, features and advantages of the present invention will become more apparent from the following detailed description of one or more preferred embodiments of the utility model, as illustrated in the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.

FIG. 1 is a schematic structural view of an accidental landing automatic power-off protection angle grinder of the present invention;

FIG. 2 is a schematic cross-sectional view of a stopping mechanism of an accidental landing auto-power-off protection angle grinder according to the present invention;

FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 of the accidental landing auto-power-off protection angle grinder of the present invention;

FIG. 4 is a schematic diagram of a circuit structure of a controller in the angle grinder for protecting against accidental falling and automatic power off according to the present invention;

FIG. 5 is a schematic structural diagram of a voltage stabilizing circuit in an accidental landing auto-power-off protection angle grinder according to the present invention;

FIG. 6 is a schematic diagram of a circuit structure of a gyroscope in the accidental landing auto-power-off protection angle grinder according to the present invention;

FIG. 7 is a schematic structural diagram of a motor driving circuit in an accidental landing automatic power-off protection angle grinder according to the present invention;

FIG. 8 is a schematic diagram of a circuit structure of a switch in the accidental landing automatic power-off protection angle grinder according to the present invention.

Description of reference numerals:

1. a main body;

2. a grinding wheel;

21. stopping rotating the hole; 22. a circular truncated cone hole;

3. a cover body;

4. a stall mechanism;

41. a housing; 411. a movable groove; 42. a movable rod; 43. a clamping block; 431. a circular table column; 44. a limiting block; 45. a spring; 46. installing a cover; 461. a guide hole; 47. an electromagnet; 471. a hole of abdication; 48. a guide bar;

5. and (4) carrying out handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1-2, fig. 1 is a schematic structural view of an accidental landing automatic power-off protection angle grinder of the present invention; FIG. 2 is a schematic cross-sectional view of a stopping mechanism in an accidental landing auto-power-off protection angle grinder according to the present invention.

The embodiment provides an accidental landing automatic power-off protection angle grinder, which comprises a main body 1, wherein a grinding wheel 2 is arranged on the main body 1, a cover body 3 is arranged above the main body 1 corresponding to the grinding wheel 2, a plurality of stop holes 21 are annularly arranged on the grinding wheel 2, a circular table hole 22 is arranged at one end, close to the cover body 3, of each stop hole 21, the diameter of each circular table hole 22 is gradually increased from one end to the other end, the end, with the small diameter, of each circular table hole 22 is connected with the corresponding stop hole 21, the end, with the large diameter, of each circular table hole 22 faces the cover body 3, and under the action of the circular table holes 22, a guiding effect can be achieved, so that a clamping block 43 is more easily embedded into the corresponding stop holes 21; a stopping mechanism 4 is arranged at the position of the cover body 3 corresponding to the stopping hole 21; a handle 5 is arranged on one side of the main body 1.

Referring to fig. 2-3, fig. 2 is a schematic cross-sectional structure view of a stalling mechanism in an accidental landing automatic power-off protection angle grinder according to the utility model; FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 of the accidental landing auto-power-off protection angle grinder of the present invention.

The stalling mechanism 4 comprises a shell 41, the shell 41 is fixed on the cover body 3, an inward-concave movable groove 411 is formed in the upper surface of the shell 41, the groove bottom of the movable groove 411 penetrates through, a movable rod 42 is embedded in the movable groove 411, one end, close to the grinding wheel 2, of the movable rod 42 penetrates through the groove bottom of the movable groove 411, a clamping block 43 is arranged at one end, close to the grinding wheel 2, of the movable rod 42, the clamping block 43 is embedded in the stalling hole 21, under the action of the clamping block 43 and the stalling hole 21, after power failure occurs in the working process of the angle grinder, the clamping block 43 is embedded in the stalling hole 21, the grinding wheel 2 can be quickly stalled, and danger caused by continuous rotation of the grinding wheel 2 is avoided; a circular truncated cone 431 is arranged at one end, close to the rotation stopping hole 21, of the clamping block 43, the diameter of the circular truncated cone 431 gradually decreases from one end to the other end, the end, with the larger diameter, of the circular truncated cone 431 is connected with the clamping block 43, the end, with the smaller diameter, of the circular truncated cone 431 faces the rotation stopping hole 21, and a certain guiding effect can be achieved on the clamping block 43 under the action of the circular truncated cone 431, so that the clamping block 43 can be more easily embedded into the rotation stopping hole 21; the other end of the movable rod 42 is provided with a limit block 44, the limit block 44 is embedded into the movable groove 411, the limit block 44 is matched with the movable groove 411, and the limit block 44 can be limited in the movable groove 411 under the matching action of the limit block 44 and the movable groove 411, so that the movable rod 42 is prevented from being separated from the movable groove 411; a spring 45 is nested in the movable groove 411, one end of the spring 45 is supported on the limiting block 44, the other end of the spring 45 is supported on the mounting cover 46, the mounting cover 46 is fixed on the notch of the movable groove 411, and under the elastic force action of the spring 45, after the angle grinder is powered off, the elastic force action of the spring 45 is provided, so that the fixture block 43 can be rapidly pushed towards the direction of the rotation stopping hole 21, and the grinding wheel 2 can be rapidly stopped to rotate;

an electromagnet 47 is fixed on the inner surface of the cover body 3 at a position corresponding to the fixture block 43, the electromagnet 47 adsorbs the fixture block 43, when the electromagnet 47 is powered on, magnetic force can be generated to adsorb the fixture block 43, when the electromagnet is powered off, the fixture block 43 cannot be adsorbed, and after the switch is released by hand, the electromagnet 47 correspondingly disconnects the power supply; a yielding hole 471 penetrates through the center of the electromagnet 47, and the movable rod 42 penetrates through the yielding hole 471; the end of the limiting block 44 far away from the movable rod 42 is provided with a guide rod 48, a guide hole 461 penetrates through the position of the mounting cover 46 corresponding to the guide rod 48, the guide rod 48 penetrates through the guide hole 461, and the guide rod 48 can guide the up-and-down movement of the movable rod 42 under the matched action of the guide rod 48 and the guide hole 461.

Referring to fig. 1-8, fig. 1 is a schematic structural view of an accidental landing automatic power-off protection angle grinder of the present invention; FIG. 2 is a schematic cross-sectional view of a stopping mechanism of an accidental landing auto-power-off protection angle grinder according to the present invention; FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 of the accidental landing auto-power-off protection angle grinder of the present invention; FIG. 4 is a schematic diagram of a circuit structure of a controller in the angle grinder for protecting against accidental falling and automatic power off according to the present invention; FIG. 5 is a schematic structural diagram of a voltage stabilizing circuit in an accidental landing auto-power-off protection angle grinder according to the present invention; FIG. 6 is a schematic diagram of a circuit structure of a gyroscope in the accidental landing auto-power-off protection angle grinder according to the present invention; FIG. 7 is a schematic structural diagram of a motor driving circuit in an accidental landing automatic power-off protection angle grinder according to the present invention; FIG. 8 is a schematic diagram of a circuit structure of a switch in the accidental landing automatic power-off protection angle grinder according to the present invention.

The grinding wheel grinding machine is characterized in that a motor and a circuit board are installed in the main body 1, the motor is in transmission connection with the grinding wheel 2 and is electrically connected with the circuit board, a controller, a voltage stabilizing circuit, a gyroscope, a motor driving circuit and a switch circuit are arranged on the circuit board, the controller is electrically connected with the electromagnet 47, and the controller is respectively electrically connected with the voltage stabilizing circuit, the gyroscope, the motor driving circuit and the switch circuit.

It is to be understood that the disclosed embodiments of the utility model are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the utility model. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the utility model may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth.

Claims

1. The utility model provides an accident falls to ground auto-power-off protection angle mill, includes the main part, be equipped with the emery wheel in the main part, the top that the main part corresponds the emery wheel is equipped with the cover body, its characterized in that: a plurality of stop holes are annularly arranged on the grinding wheel, and stop mechanisms are arranged on the cover body at positions corresponding to the stop holes;

2. The accidental landing auto-power-off protection angle grinder of claim 1, wherein: the one end that stall hole is close to the cover body is equipped with round platform hole, round platform hole is one end to the other end aperture grow gradually, the one end that round platform hole aperture is little is connected with the stall hole, the one end that round platform hole aperture is big is towards the cover body.

3. The accidental landing auto-power-off protection angle grinder of claim 1, wherein: the clamping block is provided with a circular table column at one end close to the rotation stopping hole, the diameter of the circular table column is gradually reduced from one end to the other end, the end with the large diameter of the circular table column is connected with the clamping block, and the end with the small diameter of the circular table column faces the rotation stopping hole.

4. The accidental landing auto-power-off protection angle grinder of claim 1, wherein: the one end that the movable rod was kept away from to the stopper is equipped with the guide bar, the position that the installation lid corresponds the guide bar has run through the guiding hole, the guiding hole is passed to the guide bar.

5. The accidental landing auto-power-off protection angle grinder of claim 1, wherein: the center of the electromagnet penetrates through a yielding hole, and the movable rod penetrates through the yielding hole.

6. The accidental landing auto-power-off protection angle grinder of claim 1, wherein: the grinding wheel grinding machine is characterized in that a motor and a circuit board are installed in the main body, the motor is in transmission connection with the grinding wheel, a controller is arranged on the circuit board, and the controller is electrically connected with the electromagnet.