A magnetic steel temperature limiter for preventing magnet dislocation

Abstract

The present invention provides a magnetic steel temperature limiter for preventing magnet dislocation, including an aluminum cover, a soft magnet, a soft support, a hard magnet, a hard support, an inner spring, a small cup, a pull rod and a limit column, the aluminum cover is wrapped around the opening of the small cup, the soft magnet is fixed to the inner side of the aluminum cover through the soft support, the hard magnet is fixed on the hard support, one end of the pull rod is fixedly connected to the bottom of the hard support, the other end of the pull rod passes through the bottom of the small cup and can be movably arranged, the inner spring is arranged between the hard support and the aluminum cover, the soft magnet and the hard magnet are both located within the inner spring, one end of the limit column is fixedly connected to the soft support, and the other end of the limit column passes through the hard support and is slidably connected to the hard support. The present invention can limit the movement of the hard support and the hard magnet, so that the hard support can move along the limit column, avoiding the problem of soft magnet and hard magnet attraction and misalignment, making the attraction and separation of the soft magnet and the hard magnet more stable, and ensuring that the magnetic steel temperature limiter operates reliably.

Description

Technical Field

[0001] The invention relates to the field of magnetic steel temperature limiters, and in particular to a magnetic steel temperature limiter capable of preventing magnet misalignment. Background Art

[0002] The magnetic steel temperature limiter is a temperature controller with hard magnetism and soft magnetism. It is mostly used in rice cookers. It is a mechanical device that can automatically cut off the power of the rice cooker. It is mainly composed of non-magnetic soft magnetism and permanent hard magnetism.

[0003] When hard magnet is close to soft magnet at room temperature, the magnetic field of the hard magnet will magnetize the soft magnet, and then the two will be attracted to each other. When the temperature rises to the Curie temperature of the soft magnet, the magnetism of the soft magnet will decrease or even disappear, and the two will be separated under the elastic force of the internal spring. When the temperature drops below the Curie temperature of the soft magnet, the soft magnet can be magnetized under the action of the magnetic field.

[0004] The soft magnet and hard magnet of the magnetic steel temperature limiter currently on the market are easily misaligned when attracted, and there is a problem of poor attraction effect between the soft magnet and the hard magnet. Its structure needs to be further improved. Summary of the invention

[0005] In order to overcome the problem that the soft magnet and the hard magnet of the magnetic steel temperature limiter are easily misaligned when they are attracted, and there is a poor attraction effect between the soft magnet and the hard magnet, the present invention provides a magnetic steel temperature limiter that prevents magnet misalignment, and its specific technical solution is as follows:

[0006] A magnetic steel temperature limiter for preventing magnet dislocation, comprising an aluminum cover, a soft magnet, a soft support, a hard magnet, a hard support, an inner spring, a small cup and a pull rod, wherein the aluminum cover is wrapped around the opening of the small cup, the soft magnet is fixed to the inner side of the aluminum cover through the soft support, the soft magnet, the soft support, the hard magnet, the hard support and the inner spring are all located inside the small cup, the hard magnet is fixed on the surface of the hard support close to the opening of the small cup, one end of the pull rod is fixedly connected to the hard support, the other end of the pull rod passes through the bottom of the small cup and is movably arranged, the inner spring is arranged between the hard support and the aluminum cover, the soft magnet and the hard magnet are both located within the inner spring, and the magnetic steel temperature limiter for preventing magnet dislocation also comprises a limit column, one end of the limit column is fixedly connected to the soft support, and the other end of the limit column passes through the hard support and is slidably connected to the hard support.

[0007] One end of the limit column is fixedly connected to the soft support, and the other end passes through the hard support and is slidably connected to the hard support. The soft magnet is fixed on the soft support, and the hard magnet is fixed on the hard support. When the soft magnet and the hard magnet are attracted or separated, the limit column can limit the movement of the hard support and the hard magnet to avoid the problem of misalignment of the soft magnet and the hard magnet, making the attraction and separation of the soft magnet and the hard magnet more stable, ensuring the reliable operation of the magnetic steel temperature limiter.

[0008] Optionally, the periphery of the opening of the small cup has an outwardly protruding edge.

[0009] Optionally, the aluminum cover is wrapped around the outwardly protruding edge of the opening of the small cup.

[0010] The periphery of the opening of the small cup has an outwardly protruding edge, which can facilitate the aluminum cover to wrap the mouth of the small cup.

[0011] Optionally, the magnetic steel temperature limiter for preventing magnet misalignment also includes an outer spring and a large cup, wherein the outer spring is sleeved on the outer side wall of the small cup and one end of the outer spring is clamped on the outward protruding edge of the opening of the small cup, and the other end of the outer spring is connected to the bottom surface of the inside of the large cup.

[0012] Optionally, the outer spring and the small cup are both located in the large cup.

[0013] Optionally, the aluminum cover is threadedly connected to an outwardly protruding edge of the opening of the small cup.

[0014] Optionally, the soft magnetic card is connected to the soft support.

[0015] Optionally, the hard magnetic card is connected to the soft support.

[0016] Optionally, the magnetic steel temperature limiter also includes two mutually parallel limit rods, one end of the limit rod is fixedly connected to the bottom of the outer wall of the small cup, and the other end of the limit rod passes through the bottom of the large cup and is fixedly connected to the bottom of the large cup.

[0017] By providing an outer spring and a large cup, it can be ensured that when the inner pot is not placed in the rice cooker, the soft magnet and the hard magnet cannot be attracted by the rocker switch, thereby preventing the rice cooker from drying out.

[0018] The beneficial effects achieved by the present invention are as follows: one end of the limit column is fixedly connected to the soft support, and the other end passes through the hard support and is slidably connected to the hard support, while the soft magnet is fixed on the soft support and the hard magnet is fixed on the hard support. When the soft magnet and the hard magnet are attracted or separated, the limit column can limit the movement of the hard support and the hard magnet, so that the hard support can move along the limit column, avoiding the problem of misalignment of the soft magnet and the hard magnet, making the attraction and separation of the soft magnet and the hard magnet more stable, and ensuring the reliable operation of the magnetic steel temperature limiter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The invention may be further understood from the following description taken in conjunction with the accompanying drawings, with emphasis placed on illustrating the principles of the embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of a magnetic steel temperature limiter for preventing magnet misalignment in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the explosion structure of a magnetic steel temperature limiter for preventing magnet dislocation in an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Aluminum cover; 2. Soft magnet; 3. Soft support; 4. Hard magnet; 5. Hard support; 6. Inner spring; 7. Small cup; 8. Pull rod; 9. Outer spring; 10. Large cup; 11. Limit column; 12. Limit rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments.

[0025] The present invention is a magnetic steel temperature limiter for preventing magnet dislocation, and the following embodiments are described according to the accompanying drawings:

[0026] like Figure 1 As shown, a magnetic steel temperature limiter for preventing magnet dislocation comprises an aluminum cover 1, a soft magnet 2, a soft support 3, a hard magnet 4, a hard support 5, an inner spring 6, a small cup 7 and a pull rod 8, wherein the aluminum cover 1 is wrapped around the opening of the small cup 7, the soft magnet 2 is fixed to the inner side of the aluminum cover 1 through the soft support 3, the soft magnet 2, the soft support 3, the hard magnet 4, the hard support 5 and the inner spring 6 are all located inside the small cup 7, the hard magnet 4 is fixed on the surface of the hard support 5 close to the opening of the small cup 7, and the pull rod 8 One end of the pull rod 8 is fixedly connected to the hard support 5, the other end of the pull rod 8 passes through the bottom of the small cup 7 and is movably arranged, the inner spring 6 is arranged between the hard support 5 and the aluminum cover 1, the soft magnet 2 and the hard magnet 4 are both located within the inner spring 6, and the magnetic steel temperature limiter for preventing magnet misalignment also includes a limit column 11, one end of the limit column 11 is fixedly connected to the soft support 3, and the other end of the limit column 11 passes through the hard support 5 and is slidably connected to the hard support 5.

[0027] One end of the limit column 11 is fixedly connected to the soft support 3, and the other end passes through the hard support 5 and is slidably connected to the hard support 5. The soft magnet 2 is fixed on the soft support 3, and the hard magnet 4 is fixed on the hard support 5. When the soft magnet 2 and the hard magnet 4 are attracted or separated, the limit column 11 can limit the movement of the hard support 5 and the hard magnet 4 to avoid the problem of misalignment of the soft magnet 2 and the hard magnet 4, making the attraction and separation of the soft magnet 2 and the hard magnet 4 more stable, ensuring the reliable operation of the magnetic steel temperature limiter.

[0028] The opening of the small cup 7 has an outwardly protruding edge around it, and the aluminum cover 1 is wrapped around the outwardly protruding edge of the opening of the small cup 7. The opening of the small cup 7 has an outwardly protruding edge around it, which can facilitate the aluminum cover 1 to wrap around the opening of the small cup 7.

[0029] like Figure 1 as well as Figure 2 As shown, the magnetic steel temperature limiter for preventing magnet misalignment also includes an outer spring 9 and a large cup 10, wherein the outer spring 9 is sleeved on the outer side wall of the small cup 7 and one end of the outer spring 9 is clamped on the outwardly protruding edge of the opening of the small cup 7, and the other end of the outer spring 9 is connected to the bottom surface of the inside of the large cup 10. The outer spring 9 and the small cup 7 are both located in the large cup 10.

[0030] When the inner pot is put into the electric rice cooker, the small cup 7 sinks under the gravity of the inner pot. At this time, the seesaw switch (switch button) of the electric rice cooker is pressed to push the pull rod 8, so that the hard support 5 and the hard magnet 4 approach the soft magnet 2, and the soft magnet 2 and the hard magnet 4 are attracted. The seesaw switch is turned on, and the electric rice cooker starts to heat. When the electric rice cooker cooks rice, the temperature of the soft magnet 2 exceeds the Curie temperature, the magnetic properties of the soft magnet 2 disappear, and the hard magnet 4 will fall and separate from the soft magnet 2 under the elastic force of the inner spring 6 and the gravity of the hard magnet 4 and the hard support 5. The seesaw switch is pushed to cut off the power of the electric rice cooker. At this time, when the inner pot of the electric rice cooker is taken out, the small cup 7 will float upward under the action of the outer spring 9, which will drive the seesaw movement, so that the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch. By setting the outer spring 9 and the large cup 10, it can be ensured that when the inner pot is not put into the electric rice cooker, the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch, so as to prevent the electric rice cooker from burning dry.

[0031] Embodiment 2:

[0032] like Figure 1 As shown, a magnetic steel temperature limiter for preventing magnet dislocation comprises an aluminum cover 1, a soft magnet 2, a soft support 3, a hard magnet 4, a hard support 5, an inner spring 6, a small cup 7 and a pull rod 8, wherein the aluminum cover 1 is wrapped around the opening of the small cup 7, the soft magnet 2 is fixed to the inner side of the aluminum cover 1 through the soft support 3, the soft magnet 2, the soft support 3, the hard magnet 4, the hard support 5 and the inner spring 6 are all located inside the small cup 7, the hard magnet 4 is fixed on the surface of the hard support 5 close to the opening of the small cup 7, and the pull rod 8 One end of the pull rod 8 is fixedly connected to the hard support 5, the other end of the pull rod 8 passes through the bottom of the small cup 7 and is movably arranged, the inner spring 6 is arranged between the hard support 5 and the aluminum cover 1, the soft magnet 2 and the hard magnet 4 are both located within the inner spring 6, and the magnetic steel temperature limiter for preventing magnet misalignment also includes a limit column 11, one end of the limit column 11 is fixedly connected to the soft support 3, and the other end of the limit column 11 passes through the hard support 5 and is slidably connected to the hard support 5.

[0033] One end of the limit column 11 is fixedly connected to the soft support 3, and the other end passes through the hard support 5 and is slidably connected to the hard support 5. The soft magnet 2 is fixed on the soft support 3, and the hard magnet 4 is fixed on the hard support 5. When the soft magnet 2 and the hard magnet 4 are attracted or separated, the limit column 11 can limit the movement of the hard support 5 and the hard magnet 4, so that the hard support 5 can move along the limit column 11, avoiding the problem of misalignment of the soft magnet 2 and the hard magnet 4, making the attraction and separation of the soft magnet 2 and the hard magnet 4 more stable, ensuring the reliable operation of the magnetic steel temperature limiter.

[0034] In this embodiment, the other end of the limiting column 11 passes through the inner spring 6 and the hard support 5 and is connected to the bottom of the inner wall of the small cup 7 .

[0035] The opening of the small cup 7 has an outwardly protruding edge around it, and the aluminum cover 1 is wrapped around the outwardly protruding edge of the opening of the small cup 7. The opening of the small cup 7 has an outwardly protruding edge around it, which can facilitate the aluminum cover 1 to wrap around the opening of the small cup 7.

[0036] like Figure 1 as well as Figure 2 As shown, the magnetic steel temperature limiter for preventing magnet misalignment also includes an outer spring 9 and a large cup 10, wherein the outer spring 9 is sleeved on the outer side wall of the small cup 7 and one end of the outer spring 9 is clamped on the outwardly protruding edge of the opening of the small cup 7, and the other end of the outer spring 9 is connected to the bottom surface of the inside of the large cup 10. The outer spring 9 and the small cup 7 are both located in the large cup 10.

[0037] When the inner pot is put into the electric rice cooker, the small cup 7 sinks under the gravity of the inner pot. At this time, the seesaw switch (switch button) of the electric rice cooker is pressed to push the pull rod 8, so that the hard support 5 and the hard magnet 4 approach the soft magnet 2, and the soft magnet 2 and the hard magnet 4 are attracted. The seesaw switch is turned on, and the electric rice cooker starts to heat. When the electric rice cooker cooks rice, the temperature of the soft magnet 2 exceeds the Curie temperature, the magnetic properties of the soft magnet 2 disappear, and the hard magnet 4 will fall and separate from the soft magnet 2 under the elastic force of the inner spring 6 and the gravity of the hard magnet 4 and the hard support 5. The seesaw switch is pushed to cut off the power of the electric rice cooker. At this time, when the inner pot of the electric rice cooker is taken out, the small cup 7 will float upward under the action of the outer spring 9, which will drive the seesaw movement, so that the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch. By setting the outer spring 9 and the large cup 10, it can be ensured that when the inner pot is not put into the electric rice cooker, the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch, so as to prevent the electric rice cooker from burning dry.

[0038] Embodiment three:

[0039] like Figure 1As shown, a magnetic steel temperature limiter for preventing magnet dislocation comprises an aluminum cover 1, a soft magnet 2, a soft support 3, a hard magnet 4, a hard support 5, an inner spring 6, a small cup 7 and a pull rod 8, wherein the aluminum cover 1 is wrapped around the opening of the small cup 7, the soft magnet 2 is fixed to the inner side of the aluminum cover 1 through the soft support 3, the soft magnet 2, the soft support 3, the hard magnet 4, the hard support 5 and the inner spring 6 are all located inside the small cup 7, the hard magnet 4 is fixed on the surface of the hard support 5 close to the opening of the small cup 7, and the pull rod 8 is One end is fixedly connected to the hard support 5, the other end of the pull rod 8 passes through the bottom of the small cup 7 and is movably arranged, the inner spring 6 is arranged between the hard support 5 and the aluminum cover 1, the soft magnet 2 and the hard magnet 4 are both located within the inner spring 6, and the magnetic steel temperature limiter for preventing magnet misalignment also includes a limit column 11, one end of the limit column 11 is fixedly connected to the soft support 3, and the other end of the limit column 11 passes through the hard support 5 and is slidably connected to the hard support 5.

[0040] One end of the limit column 11 is fixedly connected to the soft support 3, and the other end passes through the hard support 5 and is slidably connected to the hard support 5. The soft magnet 2 is fixed on the soft support 3, and the hard magnet 4 is fixed on the hard support 5. When the soft magnet 2 and the hard magnet 4 are attracted or separated, the limit column 11 can limit the movement of the hard support 5 and the hard magnet 4, so that the hard support 5 can move along the limit column 11, avoiding the problem of misalignment of the soft magnet 2 and the hard magnet 4, making the attraction and separation of the soft magnet 2 and the hard magnet 4 more stable, ensuring the reliable operation of the magnetic steel temperature limiter.

[0041] In this embodiment, the other end of the limiting column 11 passes through the inner spring 6 and the hard support 5 and is connected to the bottom of the inner wall of the small cup 7 .

[0042] The opening of the small cup 7 has an outwardly protruding edge around it, and the aluminum cover 1 is wrapped around the outwardly protruding edge of the opening of the small cup 7. The opening of the small cup 7 has an outwardly protruding edge around it, which can facilitate the aluminum cover 1 to wrap around the mouth of the small cup 7.

[0043] like Figure 1 as well as Figure 2 As shown, the magnetic steel temperature limiter for preventing magnet misalignment also includes an outer spring 9 and a large cup 10, wherein the outer spring 9 is sleeved on the outer side wall of the small cup 7 and one end of the outer spring 9 is clamped on the outwardly protruding edge of the opening of the small cup 7, and the other end of the outer spring 9 is connected to the bottom surface of the inside of the large cup 10. The outer spring 9 and the small cup 7 are both located in the large cup 10.

[0044] When the inner pot is put into the electric rice cooker, the small cup 7 sinks under the gravity of the inner pot. At this time, the seesaw switch (switch button) of the electric rice cooker is pressed to push the pull rod 8, so that the hard support 5 and the hard magnet 4 approach the soft magnet 2, and the soft magnet 2 and the hard magnet 4 are attracted. The seesaw switch is turned on, and the electric rice cooker starts to heat. When the electric rice cooker cooks rice, the temperature of the soft magnet 2 exceeds the Curie temperature, the magnetic properties of the soft magnet 2 disappear, and the hard magnet 4 will fall and separate from the soft magnet 2 under the elastic force of the inner spring 6 and the gravity of the hard magnet 4 and the hard support 5. The seesaw switch is pushed to cut off the power of the electric rice cooker. At this time, when the inner pot of the electric rice cooker is taken out, the small cup 7 will float upward under the action of the outer spring 9, which will drive the seesaw movement, so that the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch. By setting the outer spring 9 and the large cup 10, it can be ensured that when the inner pot is not put into the electric rice cooker, the soft magnet 2 and the hard magnet 4 cannot be attracted by the seesaw switch, so as to prevent the electric rice cooker from burning dry.

[0045] After the magnetic steel temperature limiter has been used for a period of time, the soft magnet 2 may fail or the hard magnet 4 may demagnetize, so that the soft magnet 2 and the hard magnet 4 cannot be attracted to each other and the rice cannot be cooked. At this time, the general practice is to replace the entire magnetic steel temperature limiter so that the rice cooker can work normally. Then replacing the entire magnetic steel temperature limiter is likely to cause a waste of resources. To solve this problem, in this embodiment, the aluminum cover 1 is threadedly connected to the outwardly protruding edge of the opening of the small cup 7, the soft magnet 2 is clamped on the soft support 3, and the hard magnet 4 is clamped on the hard support 5. In this way, when the soft magnet 2 of the magnetic steel temperature limiter fails or the hard magnet 4 demagnetizes, the aluminum cover 1 can be disassembled from the bottom of the small cup 7, and then the failed soft magnet 2 or the demagnetized hard magnet 4 can be replaced to improve the efficiency of resource utilization.

[0046] like Figure 1 As shown, the magnetic steel temperature limiter also includes two mutually parallel limiting rods 12, one end of the limiting rod 12 is fixedly connected to the bottom of the outer wall of the small cup 7, and the other end of the limiting rod 12 passes through the bottom of the large cup 10 and is fixedly connected to the bottom of the large cup 10. When the inner pot is placed in the rice cooker, the limiting rod 12 can limit the movement of the small cup 7 to prevent the small cup 7 from shaking during the movement, so that the magnetic steel temperature limiter can operate more stably and reliably.

[0047] To sum up, the present invention discloses a magnetic steel temperature limiter for preventing magnet dislocation, and the beneficial technical effect produced is: one end of the limit column is fixedly connected to the soft support, and the other end passes through the hard support and is slidably connected to the hard support, and the soft magnet is fixed on the soft support, and the hard magnet is fixed on the hard support. When the soft magnet and the hard magnet are attracted or separated, the limit column can limit the movement of the hard support and the hard magnet, so that the hard support can move along the limit column, avoiding the problem of misalignment of the soft magnet and the hard magnet, making the attraction and separation of the soft magnet and the hard magnet more stable, and ensuring the reliable operation of the magnetic steel temperature limiter.

[0048] The above embodiments should be understood to be only used to illustrate the present invention and not to limit the protection scope of the present invention. After reading the contents of the present invention, technicians can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A magnetic steel temperature limiter for preventing magnet dislocation, comprising an aluminum cover, a soft magnet, a soft support, a hard magnet, a hard support, an inner spring, a small cup and a pull rod, wherein the aluminum cover is wrapped around the opening of the small cup, the soft magnet is fixed to the inner side of the aluminum cover through the soft support, the soft magnet, the soft support, the hard magnet, the hard support and the inner spring are all located inside the small cup, the hard magnet is fixed on the surface of the hard support close to the opening of the small cup, one end of the pull rod is fixedly connected to the hard support, the other end of the pull rod passes through the bottom of the small cup and is movably arranged, the inner spring is arranged between the hard support and the aluminum cover, the soft magnet and the hard magnet are both located inside the inner spring, characterized in that: The magnetic steel temperature limiter for preventing the magnet from being misplaced also includes a limit column, one end of which is fixedly connected to the soft support, and the other end of which passes through the hard support and is slidably connected to the hard support; the periphery of the opening of the small cup has an outwardly protruding edge; the aluminum cover is wrapped around the outwardly protruding edge of the opening of the small cup; the magnetic steel temperature limiter for preventing the magnet from being misplaced also includes an outer spring and a large cup, the outer spring is sleeved on the outer side wall of the small cup and one end of the outer spring is clamped on the outward protruding edge of the opening of the small cup. The outer spring and the small cup are both located in the large cup; the aluminum cover is threadedly connected to the outer protruding edge of the opening of the small cup; the soft magnetic card is connected to the soft support; the hard magnetic card is connected to the soft support; the magnetic steel temperature limiter also includes two mutually parallel limit rods, one end of the limit rod is fixedly connected to the outer wall bottom of the small cup, and the other end of the limit rod passes through the bottom of the large cup and is fixedly connected to the bottom of the large cup; When the inner pot is put into the rice cooker, the small cup sinks under the gravity of the inner pot. At this time, press the rocker switch of the rice cooker to push the pull rod, so that the hard support and the hard magnet move closer to the soft magnet. The soft magnet and the hard magnet are attracted, the rocker switch is turned on, and the rice cooker starts to heat up. When the rice is cooked in the rice cooker, the temperature of the soft magnet exceeds the Curie temperature, the magnetism of the soft magnet disappears, and the hard magnet will fall and separate from the soft magnet under the elastic force of the inner spring and the gravity of the hard magnet and the hard support. Push the rocker switch to cut off the power of the rice cooker. At this time, when the inner pot of the rice cooker is removed, the small cup will float upward under the action of the outer spring.

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