Overheat detection device of motor

Abstract

The utility model discloses an overheat detection device of a motor, which relates to the technical field of motors, and is characterized in that the surface of a motor shell is provided with a first groove, and a detection component is arranged at the first groove; the detection component comprises a shell provided with a storage cavity and a detection assembly arranged in the storage cavity, the detection assembly comprises a power supply component, and the power supply component is configured to supply power to devices in the detection assembly; one end of the warning component is electrically connected with the power supply component; the first conductor is electrically connected with the other end of the warning component; the second conductor is electrically connected with the power supply component; wherein the first conductor and the second conductor are arranged correspondingly, a contact is arranged on the surface of one side, close to the first conductor, of the second conductor, and the second conductor is configured to deform under the action of temperature.

Description

Technical Field

[0001] This utility model relates to the field of electric motors, specifically an overheat detection device for electric motors. Background Technology

[0002] Electric motors are widely used in various fields, such as wind power, industrial robots, and precision machining equipment, due to their high efficiency, high power density, and excellent dynamic response characteristics. However, during operation, prolonged continuous work, excessive load, and poor heat dissipation can easily lead to an increase in the internal temperature of the motor, resulting in overheating. Overheating not only affects the motor's efficiency and stability but can also damage internal components and even cause safety accidents such as fires. Utility Model Content

[0003] The purpose of this invention is to provide an overheat detection device for electric motors to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An overheat detection device for an electric motor, wherein a first groove is formed on the surface of the motor housing, and a detection component is arranged at the position of the first groove;

[0006] The detection component includes a housing with a receiving cavity and a detection assembly disposed inside the receiving cavity. The detection assembly includes:

[0007] A power supply component, configured to supply power to the devices in the detection assembly;

[0008] The warning component is electrically connected at one end to the power supply component.

[0009] The first conductor is electrically connected to the other end of the warning component;

[0010] The second conductor is electrically connected to the power supply component.

[0011] The first conductor and the second conductor are arranged in corresponding positions. The second conductor has a contact point on the side surface of the second conductor that is closer to the first conductor. The second conductor is configured to deform under the action of temperature.

[0012] Preferably, the warning component includes a buzzer and / or an LED light-emitting device.

[0013] Preferably, the power supply component is a button battery, and the power supply component is arranged near the top of the casing.

[0014] Preferably, the outer shell includes a first shell component and a second shell component, with the end of the first shell component connected to the second shell component; wherein the outer wall size of the second shell component corresponds to the inner wall of the first groove, and the power supply component and the warning component are located inside the first shell component.

[0015] Preferably, the second conductor includes a conductive metal layer and a memory metal layer attached to one side surface of the conductive metal layer;

[0016] Contacts are arranged on the other side of the conductive metal layer, and the memory metal layer is fixed to the inner wall of the storage cavity at one position.

[0017] Preferably, a ferromagnetic metal is embedded at the end of the first groove, and a magnet is arranged at the end of the outer shell; when the detection component is embedded in the first groove, the magnet acts on the ferromagnetic metal.

[0018] Preferably, a threaded post is embedded at the end of the first groove, and a threaded groove is arranged at the end of the outer shell; when the detection component is embedded in the first groove, the threaded groove and the threaded post are connected by a mating connection.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model discloses an overheat detection device for an electric motor. It determines whether the motor is overheating by detecting temperature changes in the motor casing and issues a warning signal when overheating occurs. The device includes a detection component, which consists of a casing and an internal detection assembly. The casing is installed in a first groove on the surface of the motor casing, providing stability and ease of maintenance. The detection assembly includes a power supply component, a warning component, a first conductor, and a second conductor. The power supply component supplies power to the assembly, and the warning component issues a signal when overheating occurs. The first conductor connects the contacts of the warning component and the second conductor. The second conductor deforms under temperature, thereby changing its contact state with the first conductor and controlling the circuit's on / off state. During normal motor operation, the circuit is open, and no signal is issued; when the motor overheats, the deformation of the second conductor causes the contacts to make contact with the first conductor, closing the circuit and triggering the warning signal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the positional relationship between the electric motor and the overheat detection device in one embodiment.

[0022] Figure 2 This is a cross-sectional view of an overheat detection device in one embodiment.

[0023] Figure 3 This is a schematic diagram of the second conductor structure in one embodiment.

[0024] Figure 4 This is a schematic diagram of the appearance of the detection component in one embodiment;

[0025] Figure 5This is a schematic diagram of the appearance of the detection component in another embodiment. Detailed Implementation

[0026] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0027] The embodiments of this patent are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0028] In the description of this patent, it should be understood that the terms "middle", "bottom", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "both sides", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0029] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection or installation, a detachable connection or installation, or an integral connection or installation. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0030] Please refer to Figures 1 to 2 One embodiment discloses an overheat detection device for an electric motor. Figure 1 At position A, there is an electric motor. A first groove is formed on the surface of the electric motor housing, and a detection component 1 is arranged at the position of the first groove. The detection component 1 includes a housing with a storage cavity and a detection assembly arranged inside the storage cavity. The detection assembly includes: a power supply component 13 configured to supply power to the devices in the detection assembly; an alarm component 14 with one end electrically connected to the power supply component 13; a first conductor 15 electrically connected to the other end of the alarm component 14; and a second conductor 16 electrically connected to the power supply component 13. The first conductor 15 and the second conductor 16 are arranged in corresponding positions. A contact point 17 is arranged on the side of the second conductor 16 closest to the first conductor 15. The second conductor 16 is configured to deform under the action of temperature.

[0031] In the above embodiment, a first groove is formed on the surface of the motor housing to accommodate and fix the detection component 1. The size of the groove matches the size of the housing of the detection component 1 to achieve a stable installation and facilitate the maintenance of the detection component 1. The warning component 14 outputs a signal, with one end electrically connected to the power supply component 13. When overheating is detected, the warning component 14 receives a signal from the circuit and reacts accordingly, such as emitting a sound or light signal to remind the user of the motor's overheating condition. The first conductor 15 acts as a connector in the circuit, with one end electrically connected to the other end of the warning component 14, and the other end corresponding to the contact 17 on the second conductor 16. The second conductor 16 is electrically connected to the power supply component 13 and is configured to deform under temperature. The contact 17 is arranged on the surface of the second conductor 16 near the first conductor 15. When the temperature of the motor housing rises, the second conductor 16 deforms, thereby changing the contact state between the contact 17 and the first conductor 15. When the motor is running normally, the circuit inside the detection component 1 is in an open state, and the warning component 14 does not emit any signal. At this point, the second conductor 16 maintains its initial shape, and the contact 17 and the first conductor 15 maintain a certain distance, not forming a circuit path. When the motor casing temperature rises due to prolonged operation or excessive load, the second conductor 16 deforms due to the thermosensitive properties of the material. As the temperature rises, the second conductor 16 gradually moves closer to the first conductor 15 until the contact 17 contacts the first conductor 15. This contact action closes the circuit, allowing the electrical energy provided by the power supply component 13 to flow through the warning component 14, thereby triggering a warning signal. Specifically, when the contact 17 contacts the first conductor 15, current flows from the power supply component 13 through the second conductor 16, the contact 17, and the first conductor 15, finally reaching the warning component 14. Upon receiving the current signal, the warning component 14 emits a corresponding sound or light signal according to preset logic to remind the user that the motor is overheating. This immediate warning mechanism helps users promptly detect and address motor overheating issues, thereby avoiding potential safety hazards.

[0032] In one embodiment, the warning component 14 includes a buzzer and / or an LED light-emitting device. The buzzer is an electronic component capable of emitting sound under the influence of current. In the motor overheat detection device, the buzzer is connected to the power supply component 13 and the detection circuit. When the temperature of the motor casing rises abnormally, causing the second conductor 16 in the detection circuit to deform and come into contact with the first conductor 15, the circuit closes, and the buzzer receives the current signal and emits a loud buzzing sound, thereby alerting the user to the motor overheating. The LED light-emitting device is a semiconductor component capable of emitting light under the influence of current. Similar to the buzzer, the LED light-emitting device is also connected in the detection circuit. When the circuit closes, the LED light-emitting device lights up, emitting bright light to visually alert the user that the motor is overheating. By combining the buzzer and the LED light-emitting device, the warning component 14 can simultaneously provide two different types of warning signals—sound and light—ensuring that the user can promptly detect the motor overheating problem under any circumstances.

[0033] In another embodiment, the power supply component 13 is a button battery, and the power supply component 13 is arranged near the top of the housing. In order to facilitate the replacement of the power supply component 13, the top of the housing is provided with an opening and a cover with a sealing opening, through which the user can easily remove the old battery and insert the new battery.

[0034] Please refer to Figure 4 In one embodiment, the outer casing includes a first shell member 11 and a second shell member 12, with the end of the first shell member 11 connected to the second shell member 12. The outer wall dimensions of the second shell member 12 correspond to the inner wall of the first groove. The power supply member 13 and the warning member 14 are located inside the first shell member 11. Specifically, when the second shell member 12 is inserted into the first groove, the first shell member 11 is located outside the first groove. Because the first shell member 11 is exposed, the user can easily apply appropriate force to the first shell member 11 to detach the entire detection device from the motor. This easy-to-disassemble design saves the user time and effort.

[0035] Please refer to Figure 3 In one embodiment, the second conductor 16 includes a conductive metal layer 161 and a memory metal layer 162 attached to one side of the conductive metal layer 161; a contact 17 is arranged on the other side of the conductive metal layer, and the memory metal layer 162 is fixed to the inner wall of the receiving cavity at one position.

[0036] In the above embodiment, the conductive metal layer 161 is the base layer of the second conductor 16. Contacts 17 are arranged on one side surface of the conductive metal layer 161. When the temperature of the motor housing changes, the position and state of the contacts 17 will change accordingly, thereby triggering or disconnecting the circuit to detect overheating. The shape memory metal layer 162 is attached to the other side surface of the conductive metal layer 161 and fixed to the inner wall of the receiving cavity. The shape memory metal is an alloy with shape memory function, capable of deforming when stimulated by external temperature and returning to its original shape after the temperature recovers. In this embodiment, the shape memory metal layer 162 deforms as the temperature of the motor housing rises, thereby pushing the conductive metal layer 161 and the contacts 17 to move. Specifically, in the initial state, the shape memory metal layer 162 maintains a certain shape, and the conductive metal layer 161 and the contacts 17 are also in corresponding positions. At this time, a certain distance is maintained between the contacts 17 and the first conductor 15, and the circuit is in an open state. When the temperature of the motor casing rises, the shape memory metal layer 162 deforms due to heat. Since one end is fixed to the inner wall of the receiving cavity, the deformation causes the shape memory metal layer 162 to bend, which in turn pushes the conductive metal layer 161 and the contact 17 toward the first conductor 15. When the contact 17 contacts the first conductor 15, the circuit is closed, thereby triggering the warning component 14 to issue a warning signal. When the temperature drops, the shape memory metal layer 162 changes back to the initial region, and the contact does not contact the first conductor 15.

[0037] Please continue to refer to this. Figure 4 In one embodiment, a ferromagnetic metal is embedded at the end of the first groove, and a magnet is arranged at the end of the outer shell; when the detection component 1 is embedded in the first groove, the magnet acts on the ferromagnetic metal. Figure 4 The B region is a magnet. When the detection component is embedded in the first slot, the magnet and the ferromagnetic metal generate a magnetic force, which makes the outer shell and the first slot form a strong connection.

[0038] Please refer to Figure 5 In one embodiment, a threaded post is embedded at the end of the first groove, and a threaded groove is arranged at the end of the outer shell; Figure 4 In the C region, there is a threaded groove. When the detection component 1 is embedded in the first groove, the threaded groove and the threaded post are connected by a mating connection. When the detection component is embedded in the first groove, a fastening force is generated between the threaded post and the threaded groove, so that a strong connection is formed between the outer shell and the first groove.

[0039] In summary, this utility model discloses an overheat detection device for an electric motor. It determines whether the motor is overheating by detecting changes in the temperature of the motor casing and issues a warning signal when overheating occurs. The device includes a detection component, which consists of a casing and an internal detection assembly. The casing is installed in a first groove on the surface of the motor casing, providing stability and ease of maintenance. The detection assembly includes a power supply component, a warning component, a first conductor, and a second conductor. The power supply component supplies power to the assembly, and the warning component issues a signal when overheating occurs. The first conductor connects the contacts of the warning component and the second conductor. The second conductor deforms under temperature, thereby changing its contact state with the first conductor and controlling the circuit's on / off state. During normal motor operation, the circuit is open, and no signal is issued; when the motor overheats, the deformation of the second conductor causes the contacts to make contact with the first conductor, closing the circuit and triggering the warning signal.

[0040] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. An overheat detection device for an electric motor, characterized in that, A first groove is formed on the surface of the motor housing, and a detection component is arranged at the location of the first groove. The detection component includes a housing with a receiving cavity and a detection assembly disposed inside the receiving cavity, the detection assembly including: A power supply component configured to supply power to devices in a detection assembly; A warning component, one end of which is electrically connected to the power supply component; A first conductor, which is electrically connected to the other end of the warning component; The second conductor is electrically connected to the power supply component; The first conductor and the second conductor are arranged in corresponding positions. The second conductor has a contact point on the side surface of the second conductor closest to the first conductor. The second conductor is configured to deform under temperature.

2. The overheat detection device for an electric motor according to claim 1, characterized in that, The warning component includes a buzzer and / or an LED light-emitting device.

3. The overheat detection device for an electric motor according to claim 1, characterized in that, The power supply component is a button battery, and the power supply component is arranged near the top of the housing.

4. The overheat detection device for an electric motor according to claim 1, characterized in that, The outer shell includes a first shell component and a second shell component, with the end of the first shell component connected to the second shell component; The outer wall dimensions of the second shell component correspond to the inner wall dimensions of the first groove, and the power supply component and the warning component are located inside the first shell component.

5. An overheat detection device for an electric motor according to any one of claims 1 to 4, characterized in that, The second conductor includes a conductive metal layer and a memory metal layer attached to one side surface of the conductive metal layer; The conductive metal layer has contacts arranged on the other side surface, and the memory metal layer is fixed to the inner wall of the storage cavity at one position.

6. The overheat detection device for an electric motor according to claim 5, characterized in that, The first groove end is inlaid with ferromagnetic metal, and the outer shell end is provided with a magnet; When the detection component is embedded in the first slot, the magnet acts on the ferromagnetic metal.

7. The overheat detection device for an electric motor according to claim 5, characterized in that, The first groove end is inlaid with a threaded post, and the outer shell end is provided with a threaded groove; The detection component is embedded in the first groove, and the threaded groove and the threaded post are connected by a mating connection.

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