Magnet temperature controller

Abstract

The utility model particularly relates to the technical field of magnet temperature control, and discloses a magnet temperature controller, which comprises a workbench mounting seat, an end cover is in threaded connection with the bottom end of the mounting seat, a support rod is inserted into the bottom end of the end cover, a spring assembly is arranged in the mounting seat, and a magnet is arranged in the spring assembly. And two limiting seats are symmetrically and fixedly arranged in the mounting seat, clamping grooves are symmetrically formed in the bottom ends of the two limiting seats, and each spring assembly comprises a first connecting ring clamped in the corresponding clamping groove. The mounting base, the spring assembly and the limiting bases are arranged, the spring assembly comprises the first connecting ring and the reset spring, the external size of the first connecting ring is matched with the gap between the two limiting bases and the internal size of the clamping groove, and when the first connecting ring is clamped into the clamping groove, displacement of the first connecting ring can be limited under the action of frictional resistance; therefore, the reset spring is arranged on the outer surface of the temperature sensing magnet in a sleeving mode, and convenience of installation and replacement of the reset spring is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnet temperature control, and particularly relates to a magnet temperature controller. Background Art

[0002] The magnet temperature controller is also called a magnetic steel temperature limiter, commonly known as a magnetic steel, and is mainly applied in rice cookers. The function of the magnet temperature controller is to change the magnetism of the temperature-sensitive magnet through temperature change, and then control the closing state of the electric heating plate circuit, so as to control the working temperature of the rice cooker and ensure that the temperature does not exceed the preset safety value during the cooking process.

[0003] The existing magnet temperature controller is composed of a temperature-sensitive magnet, a spring, a permanent magnet, a pull rod, inner and outer sleeves, etc. When the operating pull rod of the rice cooker is pressed, the permanent magnet in the magnetic temperature controller moves upward under the action of the lever to overcome the thrust of the action spring and is attracted to the temperature-sensitive magnet. At this time, the silver contact is closed under the action of the phosphor bronze sheet, and the heating plate of the rice cooker starts to heat. As the heating continues, the temperature at the bottom of the pot gradually rises. When the temperature reaches the set value of the temperature-sensitive magnet, the magnetism of the temperature-sensitive magnet disappears, and the permanent magnet resets under the action of the action spring, and the contact is disconnected through the lever, and the heater stops heating due to the circuit being disconnected.

[0004] After the existing magnet temperature controller is used for a long time, the spring is prone to fatigue damage at high temperatures, which affects the reset of the permanent magnet, resulting in a decrease in the sensitivity of the magnet temperature controller. The spring is usually fixed inside the mounting seat by bolts, and the installation and replacement are time-consuming and laborious, which affects the efficiency of spring maintenance and replacement. Summary of the Utility Model

[0005] The utility model provides a magnet temperature controller, aiming to solve the problems that after the existing magnet temperature controller is used for a long time, the spring is prone to fatigue damage at high temperatures, which affects the reset of the permanent magnet, resulting in a decrease in the sensitivity of the magnet temperature controller. The spring is usually fixed inside the mounting seat by bolts, and the installation and replacement are time-consuming and laborious, which affects the efficiency of spring maintenance and replacement.

[0006] The present utility model is realized as follows. A magnet temperature controller includes a workbench mounting base. The bottom end of the mounting base is threadedly connected with an end cover. The bottom end of the end cover is inserted with a support rod. A spring assembly is arranged inside the mounting base. Two limit seats are symmetrically and fixedly arranged inside the mounting base. Slots are symmetrically formed at the bottom ends of the two limit seats. The spring assembly includes a connecting ring I clamped inside the slot. A return spring is fixedly arranged on the side wall of the connecting ring I. The other end of the return spring is fixedly provided with a connecting ring II. A temperature-sensitive magnet is fixedly arranged on the inner side wall of the mounting base close to the two limit seats. Slots for the temperature-sensitive magnet to be inserted are formed on the side walls of the connecting ring I and the hole groove. A permanent magnet is fixedly arranged at the end of the support rod close to the connecting ring II.

[0007] Preferably, a notch I for the permanent magnet to be clamped is formed inside the end cover, and a notch II for the support rod to be inserted is formed at the bottom end of the end cover, improving the stability of the return spring and the permanent magnet during reset.

[0008] Preferably, a pull rod is rotatably connected to the bottom end of the support rod. A rotating shaft is rotatably connected to the side wall of the pull rod. The two ends of the rotating shaft are fixed by clamping, improving the convenience of controlling the support rod.

[0009] Preferably, a phosphor bronze sheet I is fixedly arranged at the position of the bottom end of the support rod close to the rotating shaft. A connecting seat is sleeved on the outer surface of the phosphor bronze sheet I. A phosphor bronze sheet II is fixedly arranged at the top end of the connecting seat. The bottom end of the connecting seat is fixed by bolts, improving the stability of the installation of the phosphor bronze sheet I and the phosphor bronze sheet II.

[0010] Preferably, the connecting ring I is adapted to the gaps between the two limit seats, and the external dimensions of the connecting ring I are adapted to the internal dimensions of the slots. The two slots symmetrically penetrate the side walls of the two limit seats in sequence, improving the convenience and stability of the rotational clamping of the connecting ring I.

[0011] Preferably, the permanent magnet is cylindrical, and the diameters of the permanent magnet and the connecting ring II are the same and are adapted to the internal dimensions of the mounting base, improving the stability of the compression of the return spring.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] First, a mounting seat, a spring assembly and a limit seat are provided, and the spring assembly includes a connecting ring 1 and a reset spring. The external dimensions of the connecting ring 1 are adapted to the gap between the two limit seats and the internal dimensions of the slot. When the connecting ring 1 is clamped inside the slot, the displacement of the connecting ring 1 can be limited under the action of friction resistance, so that the reset spring is sleeved on the outer surface of the temperature-sensitive magnet, thereby improving the convenience of installing and replacing the reset spring; secondly, an end cover is provided, the slot 1 and the slot 2 are connected, and the internal dimensions of the slot 1 and the slot 2 are adapted to the external dimensions of the permanent magnet and the support rod, thereby improving the stability of the reset spring and the reset of the permanent magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 This is a schematic diagram of the mounting structure of the mounting base of the present utility model.

[0016] Figure 3 This is a schematic side view of the three-dimensional structure of the mounting base of the present invention.

[0017] Figure 4 This is a schematic diagram of the cross-sectional installation structure of the mounting base of the present invention.

[0018] Figure 5 It is a schematic side view of the three-dimensional structure of the end cover of the present invention.

[0019] The figures are marked as follows: 1. Mounting seat; 2. End cover; 3. Support rod; 4. Pull rod; 5. Phosphor bronze sheet 1; 6. Connecting seat; 7. Phosphor bronze sheet 2; 8. Rotating shaft; 9. Spring assembly; 901. Connecting ring 1; 902. Return spring; 903. Connecting ring 2; 904. Hole groove; 10. Limit seat; 11. Permanent magnet; 12. Temperature-sensitive magnet; 13. Slot; 14. Slot 1; 15. Slot 2. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References to "embodiments" in this specification mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Please refer to Figures 1-5 The embodiment provided by the present utility model: A magnet temperature controller, comprising a workbench mounting seat 1. The bottom end of the mounting seat 1 is threadedly connected with an end cap 2. The bottom end of the end cap 2 is inserted with a support rod 3. A spring assembly 9 is arranged inside the mounting seat 1. Two limiting seats 10 are symmetrically and fixedly arranged inside the mounting seat 1. At the bottom ends of the two limiting seats 10, card slots 13 are symmetrically opened. The two card slots 13 penetrate through the side walls of the two limiting seats 10 in a central symmetry in sequence. The spring assembly 9 includes connection rings one 901 clamped inside the card slots 13. The connection rings one 901 are adapted to the gaps between the two limiting seats 10. The external dimensions of the connection rings one 901 are adapted to the internal dimensions of the card slots 13, improving the convenience and stability of the rotational clamping of the connection rings one 901. A return spring 902 is fixedly arranged on the side wall of the connection ring one 901. The other end of the return spring 902 is fixedly provided with a connection ring two 903. A temperature-sensitive magnet 12 is fixedly arranged on the inner side wall of the mounting seat 1 close to the two limiting seats 10. Card slots 904 are opened on the side walls of the connection ring one 901 and the hole slots 904 for the temperature-sensitive magnet 12 to be inserted. A permanent magnet 11 is fixedly arranged at the end of the support rod 3 close to the connection ring two 903. The permanent magnet 11 is cylindrical. The diameters of the permanent magnet 11 and the connection ring two 903 are the same and are adapted to the internal dimensions of the mounting seat 1, improving the stability of the compression of the return spring 902. The operator can drive the connection ring one 901 to rotate inside the card slot 13 by rotating the hole slot 904, so as to take out the connection ring one 901 from the card slot 13, and thus remove the spring assembly 9. Then the operator can clamp a new connection ring one 901 inside the card slot 13, thereby improving the convenience of the installation and replacement of the return spring 902.

[0023] A slot one 14 is opened inside the end cap 2 for the permanent magnet 11 to be clamped. A slot two 15 is opened at the bottom end of the end cap 2 for the support rod 3 to be inserted. The internal dimensions of the slot one 14 and the slot two 15 are adapted to the external dimensions of the permanent magnet 11 and the support rod 3, which can limit the lateral displacement of the support rod 3 and the magnet 11, thereby improving the stability of the return of the return spring 902 and the permanent magnet 11.

[0024] The bottom end of the support rod 3 is rotatably connected with a pull rod 4. A rotating shaft 8 is rotatably connected to the side wall of the pull rod 4. The two ends of the rotating shaft 8 are fixed by clamping, which improves the convenience of controlling the support rod 3. A first phosphor bronze sheet 5 is fixedly arranged at the bottom end position of the support rod 3 near the rotating shaft 8. A connecting seat 6 is sleeved on the outer surface of the first phosphor bronze sheet 5. A second phosphor bronze sheet 7 is fixedly arranged at the top end of the connecting seat 6. The bottom end of the connecting seat 6 is fixed by bolts, which improves the installation stability of the first phosphor bronze sheet 5 and the second phosphor bronze sheet 7.

[0025] Working principle: When this kind of magnet temperature controller is in use, the operator first clamps the mounting seat 1 at the middle position of the bottom end of the heater for heat conduction, then clamps the rotating shaft 8 on the side wall of the rice cooker housing, connects the first phosphor bronze sheet 5 to the heater with an electric wire, and connects the second phosphor bronze sheet 7 to an external power supply with an electric wire. When pressing the end of the rotating shaft 8, the pull rod 4 can rotate upward around the rotating shaft 8, so that the return spring 902 is compressed, and the permanent magnet 11 and the temperature-sensitive magnet 12 are adsorbed together against the elastic force of the return spring 902. Thus, when the pull rod 4 drives the second phosphor bronze sheet 7 to rotate upward, the first phosphor bronze sheet 5 and the second phosphor bronze sheet 7 are connected, so as to close the heater circuit and realize heating. When the temperature of the mounting seat 1 is relatively high, the magnetic force of the temperature-sensitive magnet 12 weakens, so the elastic force of the return spring 902 pushes the permanent magnet 11 to move downward, thus pushing the support rod 3 to drive the pull rod 4 to rotate downward, so that the first phosphor bronze sheet 5 is disconnected, and the heater circuit is disconnected to stop heating. The heater is a prior art and will not be elaborated here. When the return spring 902 is fatigued and damaged at high temperature, resulting in a decrease in the sensitivity of the magnet temperature controller, the operator can rotate the end cover 2 to separate the end cover 2 from the mounting seat 1, which is convenient to release the limit on the permanent magnet 11, and then expose the spring assembly 9. The operator rotates the hole groove 904 to drive the first connecting ring 901 to rotate inside the clamping groove 13, so as to take out the first connecting ring 901 from the clamping groove 13, and then remove the spring assembly 9. The operator then installs a new spring assembly 9 inside the mounting seat 1. The two clamping grooves 13 penetrate the side walls of the two limiting seats 10 in a central symmetry in turn. The spring assembly 9 includes a first connecting ring 901 clamped inside the clamping groove 13. The first connecting rings 901 are all adapted to the gaps between the two limiting seats 10, and the outer dimensions of the first connecting rings 901 are all adapted to the inner dimensions of the clamping grooves 13, which improves the convenience and stability of the rotation and clamping of the first connecting ring 901.

[0026] It should be noted that, for the foregoing embodiments, for the sake of simple description, they are all described as a series of action combinations. However, those skilled in the art should be aware that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0027] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0028] The units described as separate components above may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0029] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present utility model according to the situation without creative work, so as to obtain different technical solutions that essentially do not deviate from the concept of the present utility model, and these technical solutions also belong to the scope of protection of the present utility model.

Claims

1. A magnet temperature controller, characterized in that, It includes a workbench mounting base (1): A end cover (2) is threadedly connected to the bottom end of the mounting base (1). A support rod (3) is inserted into the bottom end of the end cover (2). A spring assembly (9) is arranged inside the mounting base (1). Two limit seats (10) are symmetrically and fixedly arranged inside the mounting base (1). Slots (13) are symmetrically opened at the bottom ends of the two limit seats (10). The spring assembly (9) includes a connecting ring one (901) clamped inside the slots (13). A reset spring (902) is fixedly arranged on the side wall of the connecting ring one (901). The other end of the reset spring (902) is fixedly provided with a connecting ring two (903). A temperature-sensitive magnet (12) is fixedly arranged on the inner side wall of the mounting base (1) close to the two limit seats (10). Through holes (904) are opened on the side walls of the connecting ring one (901) and the through holes (904) for the temperature-sensitive magnet (12) to be inserted. A permanent magnet (11) is fixedly arranged at the end of the support rod (3) close to the connecting ring two (903).

2. The magnet temperature controller according to claim 1, characterized in that: A notch one (14) for clamping the permanent magnet (11) is opened inside the end cover (2). A notch two (15) for inserting the support rod (3) is opened at the bottom end of the end cover (2).

3. The magnet temperature controller according to claim 2, wherein: A pull rod (4) is rotatably connected to the bottom end position of the support rod (3). A rotating shaft (8) is rotatably connected to the side wall of the pull rod (4). The two ends of the rotating shaft (8) are fixed by clamping.

4. The magnet temperature controller according to claim 3, characterized in that: A phosphor bronze sheet one (5) is fixedly arranged at the bottom end position of the support rod (3) close to the rotating shaft (8). A connecting seat (6) is sleeved on the outer surface of the phosphor bronze sheet one (5). A phosphor bronze sheet two (7) is fixedly arranged at the top end of the connecting seat (6). The bottom end of the connecting seat (6) is fixed by bolts.

5. A magnet temperature controller according to claim 1, wherein: The connecting ring one (901) is adapted to the gaps between the two limit seats (10). The external dimensions of the connecting ring one (901) are adapted to the internal dimensions of the slots (13). The two slots (13) symmetrically penetrate the side walls of the two limit seats (10) in a central symmetry manner.

6. The magnet temperature controller according to claim 1, characterized in that: The permanent magnet (11) is cylindrical. The diameters of the permanent magnet (11) and the connecting ring two (903) are the same and are adapted to the internal dimensions of the mounting base (1).

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