A device for detecting the polarity of a magnet
By using a device to detect the positive and negative poles of magnets, and utilizing the repulsive force of like poles to activate a microswitch, the problem of missing or reversed magnets is solved, enabling rapid detection and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG BAITE ELECTRIC CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-06-05
AI Technical Summary
During the assembly process of a blender production line, the positive and negative markings of the magnets are easily overlooked, leading to problems such as missing or reversed installation, which affects product quality and wastes a lot of time and manpower.
A device for detecting the positive and negative poles of a magnet is adopted, including tooling, a microswitch structure and an indicator. The microswitch is turned on by the repulsion of like poles of the magnet, and the magnet status is confirmed by the sound and light signals emitted by the indicator.
It enables rapid detection of magnet status, simplifies manufacturing and maintenance, and significantly improves production line efficiency.
Smart Images

Figure CN224328222U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of home appliance assembly technology and relates to a device for detecting the positive and negative poles of a magnet. Background Technology
[0002] During the assembly process of a high-speed blender production line, due to the large number of materials and the small size of the magnets, their built-in positive and negative polarity markings are easily overlooked, leading to problems such as missing or reversed magnets. This not only affects the final quality of the product, but also consumes a lot of time and manpower for disassembly and repair when abnormalities are discovered later, seriously impacting production efficiency. Summary of the Invention
[0003] In order to overcome at least one deficiency of the prior art, this utility model provides a device for detecting the positive and negative poles of a magnet.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a device for detecting the positive and negative poles of a magnet, used to detect the magnets assembled on the test piece, including a fixture, a micro switch structure, and an indicating device. The fixture carries the test piece, the micro switch structure includes a micro switch body and a power magnet installed on the micro switch body, the indicating device is connected to the micro switch body, and the power magnet and the magnet repel each other to connect the micro switch body.
[0005] Furthermore, the tooling is provided with a detection port, which is opposite to the target position where the magnet is assembled on the workpiece being tested.
[0006] Furthermore, the micro switch body is mounted on a tooling fixture, and the power magnet is located at the detection port.
[0007] Furthermore, the micro switch body includes a switch button; the micro switch body is provided with a lever, one end of which is connected to the micro switch body, and the other end of which is fixed with a power magnet.
[0008] Furthermore, it also includes a battery, which is mounted on the tooling via a battery box. The battery is connected to the indicator and the micro switch body to supply power to the indicator and the micro switch body.
[0009] Furthermore, the indicator device is configured as an audible and visual warning structure, and the indicator signal is an audible and visual signal.
[0010] Furthermore, the indicating device includes a warning light and a mounting rod, with the warning light mounted on the mounting rod and the mounting rod fixed to the tooling.
[0011] Furthermore, the tooling includes a mounting plate with a bearing cavity, a detection port located in the bearing cavity, and the workpiece to be tested placed in the bearing cavity.
[0012] Furthermore, the tooling 1 also includes a support foot, which is fixed below the mounting plate.
[0013] In summary, the advantages of this utility model are as follows:
[0014] This invention achieves rapid detection of magnet status by utilizing the sensitivity of the micro switch, the magnetic properties of the magnet, and the timely feedback characteristics of the indicator device 3. The overall device design is simple, easy to manufacture, install, and maintain, and can reduce the number of disassembly inspections, significantly improving production line efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the device of this utility model.
[0016] Figure 2 This is a schematic diagram of the device of this utility model.
[0017] Figure 3 This is a schematic diagram of the micro switch structure of this utility model.
[0018] Figure 4 This is a schematic diagram of the assembly of the device and the test piece of this utility model. Detailed Implementation
[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0021] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.
[0022] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.
[0023] Example:
[0024] like Figures 1-4 As shown, a device for detecting the positive and negative poles of a magnet is used to detect the magnets assembled on the workpiece under test. The device for detecting the positive and negative poles of a magnet includes a fixture 1, a micro switch structure 2, and an indicating device 3. The fixture 1 carries the workpiece under test. The micro switch structure 2 includes a micro switch body 21 and a dynamic magnet 23 installed on the micro switch body 21. The indicating device 3 is connected to the micro switch body 21. The dynamic magnet 23 and the magnet repel each other, causing the micro switch body 21 to be turned on. The turning on of the micro switch body 21 causes the indicating device 3 to issue an indicating signal.
[0025] The fixture 1 is used to support the workpiece to be tested. The fixture 1 is provided with a detection port 13. The detection port 13 is opposite to the target position of the magnet assembled on the workpiece to be tested. The micro switch body 21 is installed on the fixture 1, and the power magnet 23 is located at the detection port 13. When the magnet is assembled on the workpiece to be tested and the positive and negative poles of the magnet are installed correctly, the magnet and the power magnet 23 are opposite to each other and like poles repel each other. The force of like poles repelling each other drives the power magnet 23 to move towards the micro switch body 21, thereby turning on the micro switch body 21.
[0026] The fixture 1 includes a mounting plate 11, which has a recessed bearing cavity 111. The shape of the bearing cavity 111 matches the shape of the workpiece to be tested, so as to ensure the stability of the workpiece. The testing port 13 is provided in the bearing cavity 111. The workpiece is placed in the bearing cavity 111, and the target position is opposite to the testing port 13.
[0027] The tooling 1 also includes a support foot 12, which is fixed below the mounting plate 11.
[0028] The micro switch body 21 includes a switch button 211. The switch button 211 is located on the side close to the outer shell of the micro switch body 21. The micro switch body 21 is provided with a lever 22. One end of the lever 22 is connected to the micro switch body 21, and the other end of the lever 22 is fixed with a power magnet 23. The switch button 211 is located below the lever 22. When the tested part is equipped with a magnet and the positive and negative poles of the magnet are installed correctly, the power magnet 23 is pushed towards the micro switch body 21 by the repulsive force of like poles, which drives the lever 22 to move downward, thereby pushing the switch button 211 to achieve the purpose of turning on the micro switch body 21.
[0029] The micro switch body 21 adopts the existing conventional structure. This application has not made any improvements to the internal structure and opening and closing principle of the micro switch body 21, and will not elaborate on them here.
[0030] The indicator device 3 and the micro switch body 21 can be connected by a wire. When the micro switch body 21 is turned on and powered on, the indicator device 3 is activated and sends an indicator signal. Therefore, whether the tested part is correctly installed with a magnet can be confirmed by whether the indicator device 3 sends an indicator signal, thus realizing rapid detection of the magnet's state.
[0031] This application achieves rapid detection of magnet status by utilizing the sensitivity of the micro switch, the magnetic properties of the magnet, and the timely feedback characteristics of the indicating device 3. The overall device design is simple, easy to manufacture, install, and maintain, and can reduce the number of disassembly inspections, significantly improving production line efficiency.
[0032] The indicator device 3 can be a conventional audible and visual warning device, such as a buzzer or warning light. The indicator signal is an audible and visual signal. When the indicator device 3 is powered on, the buzzer emits a warning sound and the warning light emits a warning light; or the indicator device 3 can be set with different audible and visual signals when it is powered off and powered on.
[0033] like Figure 1 As shown, in this embodiment, the indicator device 3 is set as a warning light, including a warning light 31 and a mounting rod 21. The warning light 31 is mounted on the mounting rod 21, and the mounting rod 21 is fixed to the tooling 1.
[0034] The device for detecting the positive and negative poles of the magnet also includes a battery, which is mounted on the tooling via a battery box. The battery is connected to the indicator and the micro switch body to supply power to the indicator and the micro switch body.
[0035] In other embodiments, the battery 4 may be replaced by a power cord, which is inserted into a socket to power the indicator 3 and the microswitch body 21.
[0036] The micro switch body 21 used in this application can be purchased from the market. The specific connection methods of the micro switch body 21, the indicator device 3 and the battery 4 all adopt conventional circuit connection methods in the prior art. The internal components of each structure all adopt conventional models in the prior art, and their internal structure belongs to the prior art structure. Workers can complete the normal operation of them according to the existing technical manual, and will not be described in detail here.
[0037] The tested component in this embodiment is a blender assembly, but it is not limited to this and can also be applied to the detection of magnets in other fields.
[0038] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.
Claims
1. A device for detecting the positive and negative poles of a magnet, used to detect the magnets assembled on the tested component, characterized in that: It includes tooling, a micro switch structure, and an indicating device. The tooling carries the part to be tested. The micro switch structure includes a micro switch body and a power magnet installed on the micro switch body. The indicating device is connected to the micro switch body. The power magnet and the magnet turn on the micro switch body through the repulsion of like poles.
2. The device for detecting the positive and negative poles of a magnet according to claim 1, characterized in that: The tooling is equipped with a detection port, which is opposite to the target position where the magnet is assembled on the part being tested.
3. The device for detecting the positive and negative poles of a magnet according to claim 2, characterized in that: The micro switch body is mounted on the tooling, and the power magnet is located at the detection port.
4. The device for detecting the positive and negative poles of a magnet according to claim 1, characterized in that: The micro switch body includes a switch button; the micro switch body is provided with a lever, one end of which is connected to the micro switch body, and the other end of which is fixed with a power magnet.
5. The device for detecting the positive and negative poles of a magnet according to claim 1, characterized in that: It also includes a battery, which is mounted on the tooling via a battery box. The battery is connected to the indicator and the micro switch body to supply power to the indicator and the micro switch body.
6. The device for detecting the positive and negative poles of a magnet according to claim 1, characterized in that: The indicator device is configured as an audible and visual warning structure, and the indicator signal is an audible and visual signal.
7. The device for detecting the positive and negative poles of a magnet according to claim 6, characterized in that: The indicator device includes a warning light and a mounting rod. The warning light is mounted on the mounting rod, and the mounting rod is fixed to the tooling.
8. The device for detecting the positive and negative poles of a magnet according to claim 3, characterized in that: The tooling includes a mounting plate with a bearing cavity, a detection port located in the bearing cavity, and the part to be tested placed in the bearing cavity.
9. A device for detecting the positive and negative poles of a magnet according to claim 8, characterized in that: The tooling also includes support feet, which are fixed below the mounting plate.