CN219875705U - Hall speed regulation signal switch - Google Patents
Hall speed regulation signal switch Download PDFInfo
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- CN219875705U CN219875705U CN202321348938.3U CN202321348938U CN219875705U CN 219875705 U CN219875705 U CN 219875705U CN 202321348938 U CN202321348938 U CN 202321348938U CN 219875705 U CN219875705 U CN 219875705U
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- 206010024453 Ligament sprain Diseases 0.000 abstract description 3
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Abstract
The utility model provides a Hall speed regulation signal switch, which comprises a Hall element and a special-shaped magnetic element moving towards a direction approaching or far away from the Hall element, wherein the magnetic field intensity sensed by the Hall element can be gradually increased or reduced in the process that the special-shaped magnetic element moves towards the direction approaching or far away from the Hall element. Therefore, the output voltage of the speed regulating switch is gradually increased or reduced, and the motor is further controlled to regulate the speed gradually, so that the hands of operators are not easy to sprain, and the safety and reliability are further improved.
Description
Technical Field
The utility model relates to the technical field of signal switches, in particular to a Hall speed-regulating signal switch
Background
Speed-regulating switches are widely used in power tools such as hand-held hole drills, power screw drills, and the like. The Hall speed regulation signal switch is one of the speed regulation switches and comprises a handle, a magnet and a Hall element, wherein the magnet is fixed on the handle, the Hall element is arranged on a circuit board, when the magnet is driven by the handle to move towards a direction close to or far away from the Hall element, the Hall element senses the magnetic field intensity change of the magnet, and a speed regulation signal can be correspondingly output (namely, the output voltage of the switch can also be correspondingly changed), so that the rotating speed of a motor is controlled, and the speed regulation function of the motor is realized. The inventor finds that the motor speed regulation is slower in the front-stage travel of the pressing handle during actual use, but the motor can be quickly regulated in a short time in the rear-stage travel, so that the electric tool is quickly started, an operator can not respond timely easily, the hand is easy to sprain, and the safety performance is lower.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects that the motor in the prior art can be started quickly, and an operator can not react easily and can be injured easily, so that the Hall speed regulation signal switch with high safety performance is provided.
Therefore, the utility model provides a Hall speed regulation signal switch, which comprises a Hall element and a special-shaped magnetic element moving towards or away from the Hall element, wherein the magnetic field intensity induced by the Hall element can be gradually increased or reduced in the process that the special-shaped magnetic element moves towards or away from the Hall element.
The special-shaped magnetic element can reciprocate along the straight line direction, the Hall element is positioned at one side of the moving direction of the special-shaped magnetic element, and the special-shaped magnetic element is provided with a special-shaped surface facing the Hall element, wherein when the special-shaped magnetic element moves along one direction, the vertical projection distance between the Hall element and the special-shaped surface and/or the vertical projection area of the Hall element on the special-shaped surface changes, so that the intensity of a magnetic field sensed by the Hall element is gradually increased or reduced.
When the special-shaped magnetic element moves towards one direction, the vertical projection area of the Hall element on the special-shaped surface is kept unchanged, and the vertical projection distance between the Hall element and the special-shaped surface is gradually increased or gradually decreased.
When the special-shaped magnetic element moves towards one direction, the vertical projection distance between the Hall element and the special-shaped surface is kept unchanged, and the vertical projection area of the Hall element on the special-shaped surface is gradually increased or gradually decreased.
When the special-shaped magnetic element moves towards one direction, the vertical projection distance between the Hall element and the special-shaped surface and the vertical projection area of the Hall element on the special-shaped surface are synchronously and gradually increased or synchronously and gradually decreased.
The special-shaped magnetic element can reciprocate along the straight line direction, the Hall element is positioned at the front end or the rear end of the moving direction of the special-shaped magnetic element, the special-shaped magnetic element is provided with a special-shaped surface facing the Hall element, and the vertical projection distance between the special-shaped surface and the Hall element is gradually increased or gradually decreased from one end, close to the Hall element, of the special-shaped surface to one end, far away from the Hall element.
The special-shaped surface is an inclined surface or an arc-shaped surface.
The special-shaped surface is trapezoid or triangle.
The special-shaped magnetic element is fixed on the movable frame, a button is arranged at one end of the movable frame, a spring is arranged between the other end of the movable frame and the shell, and the spring is suitable for driving the movable frame to reset after the pressing force of the button is removed.
The shell of the switch is provided with a shielding cover arranged outside the Hall element.
The technical scheme of the utility model has the following advantages:
1. the Hall speed regulation signal switch provided by the utility model comprises the Hall element and the special-shaped magnetic element which moves towards the direction close to or far away from the Hall element, wherein the special-shaped magnetic element can smoothly increase or decrease the magnetic field intensity sensed by the Hall element in the process of moving towards the direction close to or far away from the Hall element, so that the output voltage of the speed regulation switch is smoothly increased or decreased, and the motor is further controlled to smoothly regulate the speed, thereby ensuring that the hands of operators are not easy to sprain, and further improving the safety and reliability.
2. According to the Hall speed regulation signal switch provided by the utility model, the Hall element is positioned at one side of the moving direction of the special-shaped magnetic element, and the special-shaped magnetic element is provided with the special-shaped surface facing the Hall element, wherein when the special-shaped magnetic element moves in one direction, the inventor skillfully changes the vertical projection distance between the Hall element and the special-shaped surface and/or the vertical projection area of the Hall element on the special-shaped surface, so that the intensity of a magnetic field sensed by the Hall element is gradually increased or reduced, and further the motor is controlled to smoothly regulate the speed.
3. According to the Hall speed regulation signal switch provided by the utility model, when the special-shaped magnetic element moves towards one direction, the vertical projection area of the Hall element on the special-shaped surface is kept unchanged, and the vertical projection distance between the Hall element and the special-shaped surface is gradually increased or gradually reduced, so that the intensity of a magnetic field induced by the Hall element is gradually increased or reduced, and further the motor is controlled to smoothly regulate the speed.
4. According to the Hall speed regulation signal switch provided by the utility model, when the special-shaped magnetic element moves towards one direction, the vertical projection distance between the Hall element and the special-shaped surface and the vertical projection area of the Hall element on the special-shaped surface are synchronously and gradually increased or synchronously and gradually decreased, so that the magnetic field intensity sensed by the Hall element is gradually increased or decreased, and further the motor is controlled to smoothly regulate the speed.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a Hall speed control signal switch of the present utility model;
FIG. 2 is a schematic structural diagram of a first embodiment of a shaped magnetic element and a Hall element;
FIG. 3 is a schematic view of a first embodiment of a profiled magnetic element;
FIG. 4 is a schematic diagram of a second embodiment of a profiled magnetic element;
FIG. 5 is a schematic diagram of the travel and switching output voltage of the profiled magnetic element of the present utility model;
FIG. 6 is a schematic diagram of a third embodiment of a profiled magnetic element;
FIG. 7 is a schematic diagram of a fourth embodiment of a profiled magnetic element;
FIG. 8 is a schematic view of a fifth embodiment of a profiled magnetic element;
FIG. 9 is a schematic diagram of a rectangular magnetic element and a circuit board in the prior art;
FIG. 10 is a schematic diagram of the travel and switch output voltage of a rectangular parallelepiped magnetic element according to the prior art;
FIG. 11 is a perspective view of a Hall speed control signal switch;
fig. 12 is an exploded view of the hall speed signal switch.
Reference numerals illustrate: 1. a Hall element; 2. a profiled magnetic element; 3. a special-shaped surface; 4. a movable frame; 5. a button; 6. a housing; 7. a spring; 8. a circuit board; 9. and a shielding case.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment provides a Hall speed regulation signal switch, which comprises a shell 6, a button 5, a movable frame 4, a spring 7, a Hall element 1 and a special-shaped magnetic element 2 as shown in fig. 1.
The movable frame 4 is installed in the shell 6 in a vertically movable manner, as shown in fig. 1, a button 5 is arranged at the top of the movable frame 4, the movable frame is driven by the button 5 to move downwards relative to the shell 6, a spring 7 is arranged between the top of the movable frame 4 and the bottom wall of the shell 6, the spring 7 stores energy when the movable frame 4 moves downwards, and the energy is released after the pressing force of the button 5 is removed, so that the movable frame 4 is driven to move upwards. The movable frame 4 is provided with a mounting groove which is matched with the outline of the special-shaped magnetic element 2, and the special-shaped magnetic element 2 moves up and down along with the movable frame 4.
As shown in fig. 2, the hall element 1 is provided on the wiring board 8 on one side in the moving direction of the profiled magnetic element 2.
The special-shaped magnetic element 2 is provided with a special-shaped surface 3 facing the Hall element 1, as shown in fig. 2, wherein when the special-shaped magnetic element 2 moves in one direction, the vertical projection area of the Hall element 1 on the special-shaped surface 3 is kept unchanged, and the vertical projection distance between the Hall element 1 and the special-shaped surface 3 is gradually increased. In this embodiment, as shown in fig. 3, the shaped magnetic element 2 is a three-dimensional trapezoid, and the shaped surface 3 is an inclined surface. In this embodiment, the left side of the shaped magnetic element 2 is an N pole, the right side (i.e., the side where the shaped surface 3 is located) is an S pole, and as an alternative embodiment, the upper end of the shaped magnetic element 2 may be an N pole, and the lower end may be an S pole.
As an alternative embodiment, as shown in fig. 4 (4 a is a perspective view of the shaped magnetic element, and 4b is a front view of the shaped magnetic element), the shaped surface 3 may be a cambered surface.
As an alternative embodiment, the vertical projection area of the hall element 1 on the profiled surface 3 is gradually reduced.
As shown in fig. 11 and 12, the housing 6 of the switch has a shielding case 9 disposed outside the hall element 1, and the shielding case 9 is made of a magnetic shielding material, so that the hall element can be protected from an external magnetic field.
In the utility model, taking fig. 5 as an illustration, after the special-shaped magnetic element 2 passes a certain long stroke in the first half stroke, the Hall element generates a speed regulating signal from the point A, and the motor is not started in the process; in the second half stroke, as the special-shaped magnetic element 2 moves downwards, the vertical projection distance between the hall element 1 and the special-shaped surface 3 gradually decreases (as shown in fig. 2, the vertical projection distance is changed from D1 to D2), so that the magnetic field intensity sensed by the hall element 1 is gradually increased, the output voltage of the switch is gradually changed, and the motor speed is gradually regulated. In the conventional hall speed-regulating signal switch, as shown in fig. 9, when the magnetic element 2 of the cuboid or the cylinder moves downward, as shown in fig. 10, in the first half stroke, the hall element starts to generate a speed-regulating signal after the magnetic element 2 passes through a certain long stroke, and the motor is not started in the process; in the latter half of the stroke, as the magnetic element 2 gradually approaches the hall element 1, the output voltage of the switch increases rapidly in a shorter stroke, so that the rotation speed of the motor changes rapidly, and the electric tool starts rapidly.
Example 2
The embodiment provides a Hall speed regulation signal switch, which comprises a shell 6, a button 5, a movable frame 4, a spring 7, a Hall element 1 and a special-shaped magnetic element 2 as shown in fig. 1.
The movable frame 4 is installed in the shell 6 in a vertically movable manner, as shown in fig. 1, a button 5 is arranged at the top of the movable frame 4, the movable frame is driven by the button 5 to move downwards relative to the shell 6, a spring 7 is arranged between the top of the movable frame 4 and the bottom wall of the shell 6, the spring 7 stores energy when the movable frame 4 moves downwards, and the energy is released after the pressing force of the button 5 is removed, so that the movable frame 4 is driven to move upwards. The movable frame 4 is provided with a mounting groove which is matched with the outline of the special-shaped magnetic element 2, and the special-shaped magnetic element 2 moves up and down along with the movable frame 4.
The hall element 1 is disposed on the circuit board 8 and is located at one side of the moving direction of the profiled magnetic element 2.
As shown in fig. 6, the shaped magnetic element 2 has a shaped surface 3 facing the hall element 1, when the shaped magnetic element 2 moves in one direction, the vertical projection distance between the hall element 1 and the shaped surface 3 remains unchanged, the vertical projection area of the hall element 1 on the shaped surface 3 gradually increases, and the shaped surface 3 is a trapezoid or triangle, or may be other shapes with gradually increasing or gradually decreasing size from the bottom end to the top end of the shaped surface 3. In this embodiment, the left side of the shaped magnetic element 2 is an N pole, the right side (i.e., the side where the shaped surface 3 is located) is an S pole, and as an alternative embodiment, the upper end of the shaped magnetic element 2 may be an N pole, and the lower end may be an S pole. Note that, the schematic diagram of the relationship between the special-shaped magnetic element 2 and the switching output voltage in the present embodiment is similar to that of embodiment 1, and therefore omitted.
As an alternative embodiment, the vertical projection distance between the hall element 1 and the special-shaped surface 3 is kept unchanged, and the vertical projection area of the hall element 1 on the special-shaped surface 3 is gradually reduced.
Example 3
The embodiment provides a Hall speed regulation signal switch, which comprises a shell 6, a button 5, a movable frame 4, a spring 7, a Hall element 1 and a special-shaped magnetic element 2 as shown in fig. 1.
The movable frame 4 is installed in the shell 6 in a vertically movable manner, as shown in fig. 1, a button 5 is arranged at the top of the movable frame 4, the movable frame is driven by the button 5 to move downwards relative to the shell 6, a spring 7 is arranged between the top of the movable frame 4 and the bottom wall of the shell 6, the spring 7 stores energy when the movable frame 4 moves downwards, and the energy is released after the pressing force of the button 5 is removed, so that the movable frame 4 is driven to move upwards. The movable frame 4 is provided with a mounting groove which is matched with the outline of the special-shaped magnetic element 2, and the special-shaped magnetic element 2 moves up and down along with the movable frame 4.
The hall element 1 is arranged on the circuit board 8 and is positioned at one side of the moving direction of the special-shaped magnetic element 2.
As shown in fig. 7, the profiled magnetic element 2 has a profiled surface 3 facing the hall element 1, and when the profiled magnetic element 2 moves in one direction, the vertical projection distance between the hall element 1 and the profiled surface 3 and the vertical projection area of the hall element 1 on the profiled surface 3 gradually increase synchronously. The shape of the shaped surface 3 gradually increases from the bottom end to the top end, and the shaped surface 3 is inclined, and it should be noted that the schematic diagram of the relationship between the shaped magnetic element 2 and the switch output voltage in this embodiment is similar to that of embodiment 1, and thus omitted.
The vertical projection distance between the Hall element 1 and the special-shaped surface 3 and the vertical projection area of the Hall element 1 on the special-shaped surface 3 synchronously and gradually decrease.
Example 4
The embodiment provides a Hall speed regulation signal switch, which comprises a shell 6, a button 5, a movable frame 4, a spring 7, a Hall element 1 and a special-shaped magnetic element 2 as shown in fig. 1.
The movable frame 4 is installed in the shell 6 in a vertically movable manner, as shown in fig. 1, a button 5 is arranged at the top of the movable frame 4, the movable frame is driven by the button 5 to move downwards relative to the shell 6, a spring 7 is arranged between the top of the movable frame 4 and the bottom wall of the shell 6, the spring 7 stores energy when the movable frame 4 moves downwards, and the energy is released after the pressing force of the button 5 is removed, so that the movable frame 4 is driven to move upwards. The movable frame 4 is provided with a mounting groove which is matched with the outline of the special-shaped magnetic element 2, and the special-shaped magnetic element 2 moves up and down along with the movable frame 4.
As shown in fig. 8, the hall element 1 is provided on the wiring board 8 at the front end or the rear end in the moving direction of the profiled magnetic element 2.
The special-shaped magnetic element 2 is provided with a special-shaped surface 3 facing the Hall element 1, wherein the vertical projection distance between the special-shaped surface 3 and the Hall element 1 is gradually increased or gradually decreased from one end, adjacent to the Hall element 1, of the special-shaped surface 3 to one end, far away from the Hall element 1, of the special-shaped surface 3, and the special-shaped surface 3 is an inclined surface or an arc surface. In this embodiment, the shaped magnetic element 2 is a three-dimensional trapezoid, and the shaped surface 3 is an inclined surface or an arc surface. In this embodiment, the curve steepness of the profiled magnetic element 2 between the point a and the point B is between the prior art and the embodiment 1.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. The utility model provides a hall speed governing signal switch, its characterized in that includes hall element (1) and towards being close to or keep away from special-shaped magnetic element (2) that hall element (1) direction removed, special-shaped magnetic element (2) towards being close to or keep away from the in-process that hall element (1) direction removed, can make the intensity of magnetic field that hall element (1) sensed gently increases or reduces.
2. The hall speed regulation signal switch according to claim 1, wherein the special-shaped magnetic element (2) can reciprocate along a straight line direction, the hall element (1) is positioned at one side of the moving direction of the special-shaped magnetic element (2), the special-shaped magnetic element (2) is provided with a special-shaped surface (3) facing the hall element (1), and when the special-shaped magnetic element (2) moves towards one direction, the vertical projection distance between the hall element (1) and the special-shaped surface (3) and/or the vertical projection area of the hall element (1) on the special-shaped surface (3) changes, so that the magnetic field intensity sensed by the hall element (1) is gradually increased or reduced.
3. The hall speed regulation signal switch according to claim 2, wherein the vertical projection area of the hall element (1) on the shaped surface (3) is kept unchanged when the shaped magnetic element (2) moves in one direction, and the vertical projection distance between the hall element (1) and the shaped surface (3) is gradually increased or gradually decreased.
4. The hall speed regulation signal switch according to claim 2, wherein when the special-shaped magnetic element (2) moves in one direction, the vertical projection distance between the hall element (1) and the special-shaped surface (3) is kept unchanged, and the vertical projection area of the hall element (1) on the special-shaped surface (3) is gradually increased or gradually decreased.
5. The hall speed regulation signal switch according to claim 2, wherein when the special-shaped magnetic element (2) moves in one direction, the vertical projection distance between the hall element (1) and the special-shaped surface (3) and the vertical projection area of the hall element (1) on the special-shaped surface (3) are synchronously gradually increased or synchronously gradually decreased.
6. The hall speed regulation signal switch according to claim 1, wherein the profiled magnetic element (2) is reciprocally movable in a linear direction, the hall element (1) is located at a front end or a rear end of the profiled magnetic element (2) in a moving direction, the profiled magnetic element (2) has a profiled surface (3) facing the hall element (1), and a vertical projection distance of the profiled surface (3) from the hall element (1) gradually increases or gradually decreases from an end of the profiled surface (3) adjacent to the hall element (1) toward an end distant from the hall element (1).
7. The hall speed signal switch according to claim 3 or 5, wherein the profiled surface (3) is a bevel or an arc surface.
8. The hall speed signal switch according to claim 4, wherein the profiled surface (3) is trapezoidal or triangular.
9. The hall speed regulation signal switch according to claim 1, wherein the special-shaped magnetic element (2) is fixed on the movable frame (4), one end of the movable frame (4) is provided with a button (5), a spring (7) is arranged between the other end and the shell (6), and the spring (7) is suitable for driving the movable frame (4) to reset after the pressing force of the button (5) is removed.
10. The hall speed signal switch according to claim 1, characterized in that the housing (6) of the switch has a shield (9) provided outside the hall element (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348938.3U CN219875705U (en) | 2023-05-30 | 2023-05-30 | Hall speed regulation signal switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348938.3U CN219875705U (en) | 2023-05-30 | 2023-05-30 | Hall speed regulation signal switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219875705U true CN219875705U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321348938.3U Active CN219875705U (en) | 2023-05-30 | 2023-05-30 | Hall speed regulation signal switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219875705U (en) |
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2023
- 2023-05-30 CN CN202321348938.3U patent/CN219875705U/en active Active
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