CN219457262U - Electromagnetic coil and electric pressure cooker - Google Patents

Abstract

The disclosure relates to the technical field of household appliances and provides an electromagnetic coil and an electric pressure cooker. The electromagnetic coil includes: the coil is wound on the bracket, and the bracket is provided with a hollow cavity; the outer shell is coated on the periphery of the bracket, and the outer shell and the bracket jointly wrap the coil, the coil is connected with a lead, and a convex part wrapping the periphery of the lead is formed on the outer side surface of the outer shell; the magnetic core body is arranged in the hollow cavity of the bracket in a penetrating way, the magnetic shell is sleeved on the outer side of the shell and fixedly connected with the magnetic core body, and a notch for avoiding the protruding part is formed in the magnetic shell; and the magnetic gathering sheet is arranged at the notch. The electromagnetic coil provided by the disclosure can increase the waterproof capability of the coil, ensure the safety creepage distance, and strengthen the magnetic field force at the notch position through the arrangement of the magnetic gathering sheet so that the magnetic field force is uniformly distributed.

Description

Electromagnetic coil and electric pressure cooker

Technical Field

The present disclosure relates to the technical field of household appliances, and in particular, to an electromagnetic coil and an electric pressure cooker.

Background

The electromagnetic coil of the existing electric pressure cooker is usually subjected to injection molding encapsulation, and then an iron core and an iron shell are riveted for magnetism gathering. In order to increase the waterproof capability of the coil, and simultaneously in order to ensure the creepage distance of the safety rule, a part of the coil is protruded out of the wire outlet for encapsulation, so that a notch is required to be cut at the wire outlet position of the iron shell, and the iron shell can be assembled smoothly. However, the iron shell is provided with a notch, so that the magnetism gathering capacity of the iron shell can be reduced, the magnetic field force of the whole coil is unevenly distributed, the magnetic force of the notch position of the iron shell is small, and the exhaust valve can be laterally deviated towards the notch position when the electromagnetic coil works.

Disclosure of Invention

In order to solve the technical problems described above or at least partially solve the technical problems described above, the present disclosure provides an electromagnetic coil and an electric pressure cooker.

A first aspect of the present disclosure provides an electromagnetic coil comprising: the device comprises a bracket and a coil wound on the bracket, wherein the bracket is provided with a hollow cavity; the outer shell is coated on the periphery of the bracket, and the outer shell and the bracket jointly wrap the coil, the coil is connected with a lead, and a protruding part wrapping the periphery of the lead is formed on the outer side surface of the outer shell; the magnetic core body is arranged in the hollow cavity of the bracket in a penetrating mode, the magnetic shell body is sleeved on the outer side of the shell and is fixedly connected with the magnetic core body, and a notch for avoiding the protruding part is formed in the magnetic shell body; and the magnetic gathering sheet is arranged at the notch.

The electromagnetic coil comprises a support, a coil, a shell, a magnetic core body and a magnetic shell, wherein the coil is wound on the support, the shell is coated on the periphery of the support, and the shell and the support jointly wrap the coil, namely the coil is sealed in a sealed space formed by the shell and the support, so that the waterproof effect of the electromagnetic coil is ensured; the coil is connected with a lead, the outer side surface of the shell is provided with a protruding part wrapping the periphery of the lead, and the protruding part is arranged to increase the waterproof capability of the coil and ensure the creepage distance of the safety; the magnetic core body is arranged in the hollow cavity of the bracket in a penetrating way, the magnetic shell is sleeved on the outer side of the shell and is fixedly connected with the magnetic core body, so that the magnetic core body and the magnetic shell are utilized to perform magnetism gathering to enhance the magnetic field force of the electromagnetic coil; the magnetic shell is provided with a notch for avoiding the protruding part, and when the magnetic shell is sleeved on the shell, the notch can be used for accommodating the protruding part so as to facilitate smooth assembly of the magnetic shell; the setting of breach can lead to the magnetic force in breach position less, is provided with the magnetic gathering piece in breach department, can utilize the magnetic gathering piece to fill the breach and strengthen the magnetic field force in breach position, improves solenoid's magnetic field force distribution's homogeneity to when being applied to the steam exhaust device of electric pressure cooker with this solenoid, can solve the problem that the steam exhaust valve can be toward breach position side offset because of electromagnetic coil's magnetic field force distribution is inhomogeneous and the magnetic force in breach position is less.

In some embodiments, a limiting structure is formed on the housing at a position corresponding to the notch, and a limiting matching structure is arranged on the magnetic gathering sheet and is matched with the limiting matching structure, so that the magnetic gathering sheet is limited on the housing at a position corresponding to the notch.

In some embodiments, the limiting structure is the protruding portion, the limiting matching structure is a mounting through hole formed in the magnetic gathering sheet, the protruding portion is arranged through the mounting through hole, and the magnetic gathering sheet is sleeved on the protruding portion.

In some embodiments, an opening communicating with the mounting through hole is provided at an edge of the magnetic gathering sheet, and the magnetic gathering sheet is sleeved on the lead through the opening and moves along the lead to be sleeved on the protruding portion.

In some embodiments, the mounting through hole is a square hole, and the protruding portion is a square protruding portion adapted to the shape of the square hole so as to limit the rotation of the magnetic gathering sheet along the circumferential direction of the protruding portion.

In some embodiments, the limit structure is a groove formed on an outer side surface of the housing, the limit matching structure is a protrusion formed on one side surface of the magnetic gathering sheet, and the protrusion is inserted into the groove.

In some embodiments, the magnetic gathering sheet is attached to the outer side surface of the housing, and the magnetic shell is sleeved on the outer sides of the housing and the magnetic gathering sheet, so that the magnetic gathering sheet is pressed between the inner side surface of the magnetic shell and the outer side surface of the housing.

In some embodiments, the magnetic housing is provided with an outwardly sloped guide ramp at the open end.

In some embodiments, the magnetic gathering sheet is a square sheet, the notch is a square notch penetrating through the open end of the magnetic shell, the protrusion is inserted into the notch through the open end, and the magnetic gathering sheet covers at least a portion of the notch located on a side of the protrusion near the open end.

In some embodiments, the magnetic shell comprises a bottom wall and a surrounding wall connected with the periphery of the bottom wall, and the bottom wall is provided with an inserting hole; the magnetic core comprises a core body and a limit flanging connected with one end of the core body along the axial direction, the core body penetrates through the hollow cavity of the support, and one end, far away from the limit flanging, of the core body is inserted into the inserting hole and connected with the bottom wall of the magnetic shell in a riveting mode.

In some embodiments, the bracket comprises a bracket main body, wherein two ends of the bracket main body are respectively connected with a flange part extending along the circumferential direction and a limiting part protruding out of the flange part along the axial direction; the shell comprises a shell main body and extension parts respectively connected with two ends of the shell main body along the axial direction, wherein the shell main body is positioned on the circumferential outer sides of the support and the coil, the extension parts extend along the circumferential direction of the shell main body towards the central axis of the shell main body and are in butt fit with the corresponding limiting parts, and the protruding parts are formed on the outer side surfaces of the shell main body.

The second aspect of the disclosure provides an electric pressure cooker, comprising a cooker body and a cooker cover, wherein a steam exhaust channel is arranged on the cooker cover, a magnetic valve is movably arranged at an outlet of the steam exhaust channel, an electromagnetic coil according to any one of the above is arranged on the cooker cover, and the magnetic valve is positioned in a magnetic field generated by electrifying the electromagnetic coil so as to adjust the pressure acted on the outlet by the magnetic valve through the electromagnetic coil.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a cross-sectional view of an electromagnetic coil according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of the electromagnetic coil shown in FIG. 1;

FIG. 3 is a side view of an electromagnetic coil according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a poly sheet according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of an electric pressure cooker according to some embodiments of the present disclosure.

In the figure: 1. a magnetic housing; 11. a surrounding wall; 12. a bottom wall; 13. a notch; 2. a magnetic core; 21. a core body; 22. limit flanging; 3. a coil; 4. a bracket; 41. a holder main body; 42. a flange portion; 43. a limit part; 5. a housing; 51. a housing main body; 52. an extension; 53. an extension edge; 54. a protruding portion; 55. a plug-in part; 6. a lead wire; 7. a magnetic gathering sheet; 71. mounting through holes; 72. an opening; 8. an adhesive tape; 9. a lead terminal;

20. a pot body; 30. a pot cover; 31. a steam exhaust channel; 32. a magnetic valve; 321. a valve body; 322. a magnetic member.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The electromagnetic coil and the electric pressure cooker are described in detail by specific examples:

referring to fig. 1 to 4, an electromagnetic coil according to an embodiment of the present utility model includes: a bracket 4, a coil 3, a shell 5, a magnetic core body 2, a magnetic shell 1 and a magnetic gathering sheet 7.

Wherein the coil 3 is wound on the bracket 4, and the bracket 4 is provided with a hollow cavity; the outer shell 5 is coated on the periphery of the support 4 and is used for wrapping the coil 3 together with the support 4, the coil 3 is connected with the lead 6, the outer side surface of the outer shell 5 is provided with a bulge 54 wrapping the periphery of the lead 6, and the lead 6 is led out through the bulge 54; the magnetic core body 2 is arranged in the hollow cavity of the bracket 4 in a penetrating way, the magnetic shell body 1 is sleeved outside the shell 5 and fixedly connected with the magnetic core body 2, and a notch 13 for avoiding the protruding part 54 is arranged on the magnetic shell body 1; the poly sheet 7 is arranged at the notch 13.

In specific implementation, the bracket 4 can be a plastic bracket, and the coil 3 is wound on the bracket 4; the surface of the coil 3 can be further wrapped with a plurality of layers of adhesive tapes 8 with insulating effect, such as a Mala adhesive tape and the like; the bracket 4 around which the coil 3 is wound is subjected to in-mold injection molding to form the shell 5, the coil 3 is covered by the shell 5 and the bracket 4 together, namely, the coil 3 is sealed in a sealed space formed by the shell 5 and the bracket 4, and the shell 5 and the bracket 4 can synchronously expand and contract at high temperature and low temperature due to the fact that plastic parts are adopted for the shell 5 and the bracket 4, gaps are not easy to generate at the combining positions of the shell 5 and the bracket 4, water enters, and therefore the waterproof effect of the electromagnetic coil is improved; then the magnetic core body 2 and the magnetic shell body 1 are sleeved, the magnetic core body 2 is arranged in the hollow cavity of the support 4 in a penetrating mode, the magnetic shell body 1 is arranged on the outer side of the shell 5 in a sleeved mode to wrap the shell 5, then the magnetic core body 2 is fixedly connected with the magnetic shell body 1, and therefore magnetism is collected by the magnetic core body 2 and the magnetic shell body 1, magnetic field force of the electromagnetic coil is enhanced, the magnetic core body can be an iron core, and the magnetic shell body can be an iron shell. Further, a protruding portion 54 wrapping the periphery of the lead wire 6 is formed on the outer side surface of the housing 5, specifically, the lead wire 6 can be integrally molded in the protruding portion 54, the lead wire 6 is led out through the protruding portion 54, the waterproof capability of the electromagnetic coil is increased, meanwhile, the safety creepage distance is ensured, correspondingly, a notch 13 for avoiding the protruding portion 54 is formed in the magnetic housing 1, and when the magnetic housing 1 is sleeved on the housing 5, the notch 13 can be used for accommodating the protruding portion 54, so that the magnetic housing 1 can be assembled smoothly; the setting of breach 13 can lead to the magnetic force in breach 13 position less, causes the magnetic field force distribution of solenoid uneven, sets up the magnetic gathering piece 7 in breach 13 department, can utilize the magnetic gathering piece 7 to fill breach 13 to utilize the magnetic field force of magnetic gathering piece 7 reinforcing breach 13 position, improve the homogeneity of magnetic field force distribution of solenoid, thereby when using this solenoid to the steam exhaust device of electric pressure cooker, can solve the problem that can lead to the steam exhaust valve to the side off-set of breach 13 position because of the magnetic field force distribution uneven of solenoid.

Illustratively, referring to fig. 5, a steam exhaust channel 31 is generally disposed on a cover 30 of the electric pressure cooker, a steam exhaust valve is movably mounted at an outlet of the steam exhaust channel 31, the steam exhaust valve may specifically be a magnetic valve 32, a magnetic member 322 (such as a magnet) is disposed in a valve body of the magnetic valve 32, and correspondingly, an electromagnetic coil disposed below the magnetic valve 32 is further disposed on the cover 30, and may be sleeved on the steam exhaust channel 31, and the electromagnetic coil specifically may be an electromagnetic coil of the foregoing embodiment of the disclosure. When the electromagnetic coil is not electrified, the magnetic piece 322 of the magnetic valve 32 generates magnetic attraction with the magnetic core body 2 and the magnetic shell 1 of the electromagnetic coil, so that the magnetic valve 32 generates larger pressure on the outlet of the steam exhaust channel 31 under the action of self gravity and the magnetic attraction with the magnetic core body 2 and the magnetic shell 1, and the outlet of the steam exhaust channel 31 is closed; when the steam pressure in the electric pressure cooker is required to be regulated or the steam is required to be discharged and decompressed, the electromagnetic coil is electrified to generate a magnetic field, an upward thrust action is generated on the magnetic piece 322 of the magnetic valve 32, the magnetic field intensity of the electromagnetic coil can be changed by regulating the voltage or the current of the electromagnetic coil, so that the upward thrust intensity of the magnetic valve 32 is changed, the pressure intensity of the magnetic valve 32 acting on the outlet of the steam discharge channel 31 is regulated, and the aim of opening or closing the outlet of the steam discharge channel 31 under the combined action of the magnetic field force, the steam thrust and the gravity of the magnetic valve 32 is realized.

Because the notch 13 for avoiding the protruding portion 54 on the casing 5 is arranged on the magnetic casing 1, the magnetic field at the position of the notch 13 is smaller, and thus when the magnetic force generated by electrifying the electromagnetic coil is used for generating an upward thrust action on the magnetic valve, the thrust action on the magnetic valve 32 and the part corresponding to the position of the notch 13 up and down is smaller, and the magnetic valve 32 is biased towards the position of the notch 13. In the above embodiment of the disclosure, the magnetic gathering sheet 7 is disposed at the notch 13, so that the notch 13 can be filled with the magnetic gathering sheet 7, and the magnetic field force at the position of the notch 13 is enhanced by the magnetic gathering sheet 7, so that the magnetic field force of the electromagnetic coil is uniformly distributed, and when the magnetic field force generated by energizing the electromagnetic coil is used to push the magnetic valve upwards, the magnetic valve 32 can be ensured to stably move upwards, the problem of uneven magnetic field force distribution of the electromagnetic coil is solved, and the problem that the exhaust valve is laterally deviated to the position of the notch 13 due to uneven magnetic field force distribution of the electromagnetic coil is solved.

In some embodiments, a limiting structure is formed on the housing 5 at a position corresponding to the notch 13, and a limiting matching structure is disposed on the magnetic gathering sheet 7, where the limiting structure matches with the limiting matching structure to limit the magnetic gathering sheet 7 on the housing 5 at a position corresponding to the notch 13. So set up to follow-up installation fixed to the magnetic gathering sheet 7 realizes fixing the magnetic gathering sheet 7 installation in breach 13 position.

In some embodiments, referring to fig. 4, the limiting structure is a protrusion 54, that is, the protrusion 54 is formed as a limiting structure for limiting the poly sheet 7; the spacing cooperation structure is for seting up the installation through-hole 71 on the magnetic gathering sheet 7, namely seting up on the magnetic gathering sheet 7 be used for with the spacing complex installation through-hole 71 of bulge 54, bulge 54 wears to locate the installation through-hole 71, and the magnetic gathering sheet 7 cover is established on bulge 54, and bulge 54 corresponds with the position of breach 13 to through establishing magnetic gathering sheet 7 cover on bulge 54, realize installing the position that corresponds with breach 13 with magnetic gathering sheet 7 on shell 5. The protrusion 54 is fitted with the magnetic sheet 7, and the magnetic sheet 7 is restrained in the vertical direction as shown in fig. 2.

Further, as shown in fig. 4, the edge of the magnetism collecting sheet 7 is provided with an opening 72 communicating with the mounting through hole 71, and the magnetism collecting sheet 7 is fitted over the lead 6 through the opening 72 and moves along the lead 6 to be fitted over the projection 54. It will be appreciated that one end of the lead wire 6 is connected to the coil 3 and the other end is connected to the lead terminal 9, and that the lead terminal 9 is generally relatively large in size (see fig. 1 and 3) and cannot pass through the mounting through hole 71. An opening 72 communicating with the mounting through hole 71 in the middle thereof is thus provided at the edge of the poly sheet 7 to facilitate the passage of the lead wire 6. In the specific installation, the magnetic gathering sheet 7 is sleeved on the lead 6 through the opening 72, that is, the lead 6 firstly penetrates into the installation through hole 71 of the magnetic gathering sheet 7 through the opening 72 of the magnetic gathering sheet 7, as shown in fig. 4, the lead 6 moves upwards from the lower direction of the opening 72 of the magnetic gathering sheet 7 into the opening 72, then the magnetic gathering sheet 7 moves along the extending direction of the lead 6, as shown in fig. 1, the magnetic gathering sheet 7 moves from right to left, and finally the installation through hole 71 of the magnetic gathering sheet 7 is aligned with the protruding part 54 on the shell 5, so that the magnetic gathering sheet 7 is sleeved on the protruding part 54. That is, after the completion of the mounting, the protruding portion 54 is inserted into the mounting through hole 71, and at the same time, in order to secure the magnetic focusing ability of the magnetic focusing sheet 7, the size of the opening 72 may be set as small as possible, and the size of the opening 72 is only required to secure the lead wire to pass through.

Further, referring to fig. 4, the mounting through hole 71 is a square hole, and correspondingly, the protrusion 54 is a square protrusion matching the shape of the square hole, that is, the protrusion 54 is of a shape matching and non-circular design, so that the rotation of the poly sheet 7 along the circumferential direction of the protrusion 54 can be limited when the protrusion 54 is inserted into the mounting through hole 71. It should be understood that the cross-sectional shapes of the mounting through hole 71 and the protruding portion 54 may be triangular, polygonal, or any irregular pattern, as long as the shapes thereof are adapted and the circumferential rotation of the poly sheet 7 can be restricted, which is not limited by the present disclosure.

In some embodiments, referring to fig. 2, the magnetic gathering sheet 7 is attached to the outer side surface of the housing 5, specifically, the magnetic gathering sheet 7 may be made of a material that can be bent and deformed, such as an iron sheet, etc., and the magnetic gathering sheet 7 may be configured to have an arc structure that matches the arc of the outer side surface of the housing 5, and when the magnetic gathering sheet 7 is sleeved on the protrusion 54, the magnetic gathering sheet 7 is attached to the outer side surface of the housing 5; the magnetic shell 1 is sleeved outside the shell 5 and the magnetic gathering sheet 7 so as to press the magnetic gathering sheet 7 between the inner side surface of the magnetic shell 1 and the outer side surface of the shell 5. It can be understood that when the magnetic shell 1 is sleeved outside the magnetic focusing sheet 7, a pressure towards the central axis of the main body of the magnetic shell 1 is applied to the magnetic focusing sheet 7, so that the magnetic focusing sheet 7 is pressed between the magnetic shell 1 and the outer shell 5, thereby realizing the limit of the magnetic focusing sheet 7 in the left-right direction as shown in fig. 2, limiting the movement of the magnetic focusing sheet 7 in the left-right direction as shown in fig. 2, and limiting the movement of the magnetic focusing sheet 7 in any direction by matching the projection 54 with the fit of the mounting through hole 71 in the up-down direction as shown in fig. 2.

Further, as shown with reference to fig. 2 and 3, an outwardly inclined guide slope is provided at the open end of the magnetic housing 1. It will be appreciated that the gap between the magnetic housing 1 and the outer housing 5 is small, and a guiding inclined plane is provided at the open end of the magnetic housing 1, so that the installation of the magnetic gathering sheet 7 can be facilitated, and it will be appreciated that the magnetic gathering sheet 7 is first sleeved on the protruding portion 54, then the magnetic housing 1 is sleeved on the outer housing 5 from its own open end, and the magnetic gathering sheet 7 is compressed between the inner side surface of the magnetic housing 1 and the outer side surface of the outer housing 5.

In some embodiments, referring to fig. 4, the magnetic-collecting sheet 7 is a square sheet, the notch 13 is a square notch 13 penetrating through the open end of the magnetic housing 1, the protrusion 54 is inserted into the notch 13 through the open end, and the magnetic-collecting sheet 7 covers at least a portion of the notch 13 located on a side of the protrusion 54 near the open end, that is, the magnetic-collecting sheet 7 can cover at least a portion of the notch 13 located above the protrusion 54, as shown in fig. 3. The magnetic gathering capacity of the notch 13 is improved by utilizing the magnetic gathering sheet 7, and the weakening of the magnetic field caused by the notch 13 is weakened, so that the magnetic field is uniformly distributed. Of course, it should be noted that the magnetic flakes 7 may have other shapes, as long as the magnetic flakes 7 can at least partially cover the notches 13.

Of course, the limit fitting structure between the housing 5 and the poly sheet 7 is not limited to the above. In other embodiments of the present disclosure, the limiting structure is a groove formed on an outer side surface of the housing, the limiting mating structure is a protrusion formed on a side surface of the poly sheet, and the protrusion is inserted into the groove. Specifically, the convex portions may be press-formed at positions on the poly sheet 7 corresponding to the grooves. By this arrangement, the housing 5 and the magnetism collecting sheet 7 can be restrained from being moved in the vertical direction as shown in fig. 2 by restraining the magnetism collecting sheet 7 in the vertical direction as shown in fig. 2. In this embodiment, the poly sheet 7 may be disposed at a position above the protruding portion 54 as shown in fig. 2, and the portion of the notch 13 above the protruding portion 54 may be filled with the poly sheet 7.

Furthermore, it should be noted that the magnetic gathering sheet 7 may also be disposed outside the magnetic housing 1, specifically, may be welded or fixed to the magnetic housing 1 by screws, so long as the magnetic gathering sheet 7 can be fixed at the notch 13 position of the magnetic housing 1 to raise the magnetic field force at the notch 13 position so that the magnetic field is uniformly distributed.

Specifically, the magnetic gathering sheet 7 is a magnetic material, and may be iron or other various metals and metal oxides thereof, and illustratively, the magnetic gathering sheet 7 may be an iron sheet as long as the magnetic field force at the notch 13 can be enhanced.

In some embodiments, referring to fig. 1 and 2, the magnetic housing 1 includes a bottom wall 12 and a surrounding wall 11 connected to the periphery of the bottom wall 12, the magnetic housing 1 is sleeved on the periphery of the housing 5, the bottom wall 12 of the magnetic housing 1 is abutted to one end of the bracket 4 along the axial direction, and the bottom wall 12 of the magnetic housing 1 is provided with a plug-in hole corresponding to the magnetic core 2; the magnetic core 2 comprises a core body 21 and a limit flanging 22 connected with one end of the core body 21 along the axial direction, the core body 21 is penetrated in the hollow cavity of the bracket 4, and one end of the core body 21, which is far away from the limit flanging 22, is inserted into the inserting hole and is connected with the bottom wall 12 of the magnetic shell 1 in a riveting manner. Further, in order to ensure the tightness of the connection between the magnetic shell 1 and the magnetic core 2, the riveting position of the magnetic shell 1 and the magnetic core 2 can be sealed by glue.

In some embodiments, referring to fig. 1 and 2, the bracket 4 includes a bracket body 41, and flange portions 42 extending in a circumferential direction and a stopper portion 43 protruding from the flange portions 42 in an axial direction are connected to both ends of the bracket body 41, respectively. Specifically, the bracket body 41 may be cylindrical, two ends of the bracket body 41 in the axial direction are respectively connected with a flange portion 42, the flange portion 42 may be disk-shaped, and the flange portion 42 extends along the circumferential direction of the bracket body 41 back to the central axis of the bracket body 41; the two ends of the bracket body 41 along the axial direction are respectively provided with a limiting part 43 protruding from the flange part 42, the limiting part 43 can be an annular convex part, and the annular convex part is positioned at the central part of the flange part 42.

Further, referring to fig. 2, the housing 5 includes a housing main body 51 and extension portions 52 connected to both ends of the housing main body 51 in the axial direction, the housing main body 51 being located on the outer side in the circumferential direction of the holder 4 and the coil 3, and the extension portions 52 extending in the circumferential direction of the housing main body 51 toward the central axis of the housing main body 51 and being in abutting engagement with the corresponding stopper portions 43. In other words, the casing main body 51 and the two extending portions 52 are integrally configured to have a -shaped cross section, the casing main body 51 is wrapped around the bracket 4 and the outer side of the coil 3 in the circumferential direction, the two extending portions 52 are respectively wrapped around the outer sides of the two flange portions 42 of the bracket 4 in the axial direction, and the two extending portions 52 are respectively abutted and matched with the limiting portions 43 at the corresponding ends on the bracket 4, so that the coil 3 is jointly wrapped by the casing 5 and the bracket 4, water is prevented from entering the electromagnetic coil from the outer side, and the connection firmness of the casing 5 and the bracket 4 is effectively ensured.

Further, referring to fig. 2, an extension edge 53 is connected to one end of the housing main body 51 in the axial direction, and the extension edge 53 may be configured as an annular or semi-annular extension edge 53, where the extension edge 53 extends along the circumferential direction of the housing main body 51 and away from the central axis of the housing main body 51; that is, one end of the housing main body 51 in the axial direction is connected with an extension portion 52 extending back toward the center axis of the housing main body 51 in the circumferential direction of the housing main body 51, and an extension side 53 extending back toward the center axis of the housing main body 51 in the circumferential direction of the housing main body 51.

It should be noted that the protruding portion 54 is formed on the outer side surface of the housing main body 51, that is, the thickness of the portion of the housing main body 51 where the protruding portion 54 is provided is relatively thick, and the distance of wrapping the wire can be increased by providing the protruding portion 54, thereby enhancing the ability of blocking water from entering the inside of the electromagnetic coil from the outlet. In addition, the protruding portion 54 may also be in limit fit with the side wall of the notch 13 correspondingly disposed on the magnetic housing 1, so as to achieve a circumferential limit effect on the magnetic housing 1. The shape of the protruding portion 54 is not limited herein, and may be a protruding cylindrical shape, an elongated shape, a square shape, or the like. The lead wire connected to the coil 3 may be passed out from the outlet formed on the protrusion 54 to ensure normal wiring of the electromagnetic coil.

Further, referring to fig. 1 and 2, an extending portion 52 at one end of the housing 5 corresponding to the bottom wall 12 of the magnetic housing 1 is provided with an axially extending plugging portion 55, correspondingly, the bottom wall 12 of the magnetic housing 1 is provided with a plugging hole, the magnetic housing 1 is sleeved outside the housing 5, the plugging portion 55 on the housing 5 is plugged into the plugging hole on the magnetic housing 1, and a protruding portion 54 on the housing 5 is accommodated at the notch 13 on the magnetic housing 1, so that positioning cooperation between the magnetic housing 1 and the housing 5 is realized, and riveting fixation of the magnetic housing 1 and the magnetic core 2 is facilitated.

Still other embodiments of the present disclosure provide an electric pressure cooker, referring to fig. 5, including a cooker body 20 and a cooker cover 30, wherein a steam exhaust channel 31 is provided on the cooker cover 30, a magnetic valve 32 is movably installed at an outlet of the steam exhaust channel 31, and the magnetic valve 32 is used for closing or opening the outlet of the steam exhaust channel 31; the cover 30 is provided with the electromagnetic coil according to any one of the embodiments, and the magnetic valve 32 is positioned in the magnetic field generated by energizing the electromagnetic coil, so that the pressure of the magnetic valve 32 acting on the outlet is regulated by the electromagnetic coil.

Specifically, the magnetic valve 32 may include a valve body 321 and a magnetic member 322 (e.g., a magnet) mounted on the valve body 321; the electromagnetic coil can be sleeved on the steam exhaust channel 31 and is arranged up and down opposite to the magnetic valve 32. When the electromagnetic coil is not electrified, the magnetic piece 322 of the magnetic valve 32 generates magnetic attraction with the magnetic core body 2 and the magnetic shell 1 of the electromagnetic coil, so that the magnetic valve 32 generates larger pressure on the outlet of the steam exhaust channel 31 under the action of self gravity and the magnetic attraction with the magnetic core body 2 and the magnetic shell 1 of the magnetic core body 2, and the outlet of the steam exhaust channel 31 is closed; when the steam pressure in the electric pressure cooker is required to be regulated or the steam is required to be discharged and decompressed, the electromagnetic coil is electrified to generate a magnetic field, the magnetic piece 322 of the magnetic valve 32 is subjected to upward pushing magnetic force, the magnetic field intensity of the electromagnetic coil can be changed by regulating the voltage or the current of the electromagnetic coil, so that the magnetic force intensity of the upward pushing of the magnetic valve 32 is changed, the pressure of the magnetic valve 32 acting on the outlet of the steam discharge channel 31 is regulated, and the purpose that the outlet of the steam discharge channel 31 is opened or closed under the combined action of the magnetic force, the steam thrust and the gravity of the magnetic valve 32 is realized.

When the magnetic valve 32 moves upwards under the action of magnetic force generated by energizing the electromagnetic coil, and the outlet of the steam exhaust channel 31 is in an open state, the magnetic shell 1 is provided with the notch 13 for avoiding the protruding part 54 on the shell 5, so that the magnetic field at the position of the notch 13 is smaller, the magnetic force of the electromagnetic coil is unevenly distributed, the thrust action on the part of the magnetic valve 32 corresponding to the position of the notch 13 is smaller, and the magnetic valve 32 is laterally deviated towards the position of the notch 13. And the electromagnetic coil of the embodiment of the disclosure, through setting up the magnetic gathering sheet 7 in breach 13 department, can utilize the magnetic gathering sheet 7 to fill breach 13 to utilize the magnetic field force of magnetic gathering sheet 7 reinforcing breach 13 position, solve the inhomogeneous problem of electromagnetic coil's magnetic field force distribution, thereby solve the problem that can go towards breach 13 position side off-set because of electromagnetic coil's magnetic field force distribution is inhomogeneous, make the motion of steam valve more steady reliable, thereby guaranteed the steam exhaust effect of steam valve.

Of course, the electromagnetic coil of the embodiment of the disclosure is not limited to being applied to an electric pressure cooker, and can be applied to other household appliances adopting the electromagnetic coil.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. An electromagnetic coil, comprising:

the device comprises a bracket and a coil wound on the bracket, wherein the bracket is provided with a hollow cavity;

the outer shell is coated on the periphery of the bracket, and the outer shell and the bracket jointly wrap the coil, the coil is connected with a lead, and a protruding part wrapping the periphery of the lead is formed on the outer side surface of the outer shell;

the magnetic core body is arranged in the hollow cavity of the bracket in a penetrating mode, the magnetic shell body is sleeved on the outer side of the shell and is fixedly connected with the magnetic core body, and a notch for avoiding the protruding part is formed in the magnetic shell body;

and the magnetic gathering sheet is arranged at the notch.

2. The electromagnetic coil of claim 1, wherein a limiting structure is formed on the housing at a position corresponding to the notch, and a limiting mating structure is provided on the magnetic gathering sheet, and the limiting structure mates with the limiting mating structure to limit the magnetic gathering sheet at a position on the housing corresponding to the notch.

3. The electromagnetic coil of claim 2, wherein the limiting structure is the protruding portion, the limiting structure is a mounting through hole formed in the magnetic gathering sheet, the protruding portion is arranged through the mounting through hole, and the magnetic gathering sheet is sleeved on the protruding portion.

4. The electromagnetic coil as set forth in claim 3, wherein an opening communicating with the mounting through hole is provided at an edge of the magnetic gathering sheet, and the magnetic gathering sheet is fitted over the lead wire through the opening and moves along the lead wire to be fitted over the projection.

5. The electromagnetic coil as set forth in claim 3, wherein the mounting through hole is a square hole, and the projection is a square protrusion adapted to the shape of the square hole to restrict the rotation of the poly sheet in the circumferential direction of the projection.

6. The electromagnetic coil as set forth in claim 2, wherein the limit structure is a groove formed on an outer side surface of the housing, and the limit mating structure is a protrusion formed on a side surface of the magnetic gathering sheet, the protrusion being inserted into the groove.

7. The electromagnetic coil as set forth in any one of claims 1 to 6, wherein the magnetic gathering sheet is disposed in contact with an outer side surface of the housing, and the magnetic housing is sleeved on the housing and an outer side of the magnetic gathering sheet so as to press the magnetic gathering sheet between an inner side surface of the magnetic housing and an outer side surface of the housing.

8. The electromagnetic coil as set forth in claim 7, wherein the magnetic housing is provided at an open end thereof with an outwardly inclined guide slope.

9. The electromagnetic coil as set forth in any one of claims 1 to 6, wherein the magnetic gathering sheet is a square sheet, the notch is a square notch penetrating through an open end of the magnetic housing, the projection is inserted into the notch through the open end, and the magnetic gathering sheet covers at least a portion of the notch on a side of the projection near the open end.

10. The electromagnetic coil according to any one of claims 1 to 6, wherein the magnetic housing includes a bottom wall and a surrounding wall connected to a periphery of the bottom wall, and the bottom wall is provided with an insertion hole;

the magnetic core comprises a core body and a limit flanging connected with one end of the core body along the axial direction, the core body penetrates through the hollow cavity of the support, and one end, far away from the limit flanging, of the core body is inserted into the inserting hole and connected with the bottom wall of the magnetic shell in a riveting mode.

11. The electromagnetic coil according to any one of claims 1 to 6, wherein the bracket includes a bracket body, both ends of the bracket body being respectively connected with a flange portion extending in a circumferential direction and a stopper portion protruding from the flange portion in an axial direction;

the shell comprises a shell main body and extension parts respectively connected with two ends of the shell main body along the axial direction, wherein the shell main body is positioned on the circumferential outer sides of the support and the coil, the extension parts extend along the circumferential direction of the shell main body towards the central axis of the shell main body and are in butt fit with the corresponding limiting parts, and the protruding parts are formed on the outer side surfaces of the shell main body.

12. An electric pressure cooker, characterized by comprising a cooker body and a cooker cover, wherein a steam exhaust channel is arranged on the cooker cover, a magnetic valve is movably arranged at the outlet of the steam exhaust channel, an electromagnetic coil as claimed in any one of claims 1 to 11 is arranged on the cooker cover, and the magnetic valve is positioned in a magnetic field generated by electrifying the electromagnetic coil so as to adjust the pressure acted on the outlet by the magnetic valve through the electromagnetic coil.