In-place induction electromagnet

Abstract

The utility model relates to the technical field of electromagnetic equipment, and discloses an in-place induction electromagnet, which comprises an electromagnet assembly and a limiting piece, the electromagnet assembly comprises a shell, a fixed iron core, a movable iron core, a coil, an elastic piece and the limiting piece, the fixed iron core is fixedly connected to the shell, the movable iron core is movably connected to the shell, the coil is wound outside the fixed iron core and the movable iron core, and the elastic piece is fixedly connected to the shell. The limiting piece is fixedly connected to the side, away from the fixed iron core, of the movable iron core. The two opposite ends of the elastic piece are connected with the shell and the limiting piece correspondingly. The induction assembly comprises a circuit board and an elastic trigger key, and the elastic trigger key is used for making contact with the limiting piece to trigger an in-place induction circuit in the circuit board. According to the utility model, the reliable electromagnetic control effect can be realized, the elastic trigger key can detect the position of the limiting piece in a contact manner, and then the in-place induction circuit in the circuit board is triggered, so that the electromagnet assembly with different strokes can be adapted, the application range is wide, and the overall structure is simple and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic equipment, in particular to an in-position induction electromagnet. Background Art

[0002] In the fields of industrial automation, precision machinery control, etc., electromagnets, as a device that can use electromagnetic force to achieve the action of attraction or release, play a vital role. The core of the electromagnetic control structure is to use electromagnets to achieve the electrical control of switches.

[0003] Although there are many electromagnet products available in the current market, they are still insufficient in meeting the requirements of small size, low cost and high safety performance. In particular, in terms of monitoring the action status of the electromagnet, the relevant technology usually adopts the method of adding a metal sensor near the movable iron core of the electromagnet. However, this method can only sense the long-axis movement and cannot reliably sense the short-axis movement, which leads to the large size of the existing electromagnet products and great limitations on the application scenarios.

[0004] Therefore, it is necessary to improve the existing technology.

[0005] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Utility Model Content

[0006] The utility model provides an in-position induction electromagnet, which can realize the induction of short-axis action, and the induction action is accurate and reliable, so as to solve the problems existing in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A position sensing electromagnet, comprising:

[0009] The electromagnet assembly comprises a housing, a fixed iron core, a moving iron core, a coil, an elastic member and a limit member, wherein the fixed iron core is fixedly connected to the housing, the moving iron core is movably connected to the housing, the moving iron core is located on one side of the fixed iron core, the coil is wound around the fixed iron core and the moving iron core, the limit member is fixedly connected to a side of the moving iron core away from the fixed iron core, and opposite ends of the elastic member are respectively connected to the housing and the limit member, so that the limit member forms a tendency to move away from the fixed iron core;

[0010] The sensing component includes a circuit board and an elastic trigger key. The circuit board is fixedly connected to the shell. The elastic trigger key is connected to a side of the circuit board close to the limiter. The elastic trigger key is used to contact the limiter to trigger the in-position sensing circuit in the circuit board.

[0011] In a possible implementation, at least two elastic trigger keys are provided, each elastic trigger key is connected to the circuit board, and a trigger end of each elastic trigger key is directly opposite to the limiting member.

[0012] In a possible implementation manner, all elastic trigger keys are evenly distributed around the moving iron core.

[0013] In a possible implementation, the elastic trigger key is a spring needle, a needle tube of the spring needle is fixedly connected to the circuit board, and a needle head of the spring needle faces the limiting member.

[0014] In a possible implementation, the elastic trigger key is an elastic conductive sheet, an end of the elastic conductive sheet is connected to the circuit board, and a body of the elastic conductive sheet protrudes from a side of the circuit board close to the limiting member.

[0015] In a possible implementation, the circuit board is located on a side of the limiting component close to the fixed iron core, the circuit board is provided with a clearance through hole, and the moving iron core is passed through the clearance through hole.

[0016] In a possible implementation manner, the elastic member is a spring, the spring is sleeved outside the fixed iron core, and the spring is passed through the yielding through hole.

[0017] In a possible implementation, the electromagnet assembly further includes an insulating sheet, which is located on a side of the circuit board close to the coil, and the insulating sheet is provided with an insulating clearance hole, and the moving iron core is passed through the insulating clearance hole.

[0018] In a possible implementation, the electromagnet assembly further includes a guide tube fixedly connected to the shell, the fixed iron core is located at one end in the guide tube, the moving iron core is slidably connected in the guide tube, and the coil is wound outside the guide tube.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides an in-position sensing electromagnet, which controls a fixed iron core and a moving iron core to generate a magnetic field through a coil, and cooperates with an elastic member to control a limiting member to form a reciprocating motion close to or away from the fixed iron core, thereby achieving a reliable electromagnetic control effect. An elastic trigger key is arranged on one side of the limiting member, and the elastic trigger key can detect the position of the limiting member by contact, thereby triggering an in-position sensing circuit in a circuit board, which can be used to implement analysis of in-position sensing results. The position of the limiting member can be accurately reflected through the elastic trigger key, and the contact-type sensing method can adapt to electromagnet assemblies of different strokes, especially when it can adapt to the sensing of short-axis movements, thereby effectively realizing a small-size design of the electromagnetic control structure, having a wide range of applications, and having a simple and stable overall structure, and can also effectively reduce costs.

[0021] The present invention has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent specific embodiments incorporated herein, or will be described in detail in the accompanying drawings and subsequent specific embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an electromagnetic control structure for in-position sensing provided by an embodiment of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the electromagnetic control structure for in-position sensing provided by an embodiment of the utility model in another working state;

[0025] Figure 3 It is a schematic diagram of the exploded structure of the electromagnetic control structure of the in-position induction provided by the embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of a top view of the electromagnetic control structure of in-position sensing provided by an embodiment of the utility model;

[0027] Figure 5 is along Figure 4 Schematic diagram of the cross-sectional structure along the line A-A'.

[0028] Reference numerals:

[0029] The electromagnet assembly 100, the housing 110, the fixed iron core 120, the moving iron core 130, the coil 140, the elastic member 150, the limit member 160, the insulating sheet 170, the insulating clearance hole 171, and the guide tube 180;

[0030] The sensing component 200 , the circuit board 210 , the clearance hole 211 , and the elastic trigger key 220 . DETAILED DESCRIPTION

[0031] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0033] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0035] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0038] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] As a device that can use electromagnetic force to achieve the action of attraction or release, electromagnet plays a vital role. Although there are many electromagnet products available in the current market, they are still insufficient in meeting the requirements of small size, low cost and high safety performance.

[0041] Especially in the monitoring of the action status of the electromagnet, the related technology usually adopts the method of adding a metal sensor near the movable iron core of the electromagnet. However, this method can only sense the long-axis movement and cannot achieve reliable sensing of the short-axis movement. This leads to the existing electromagnet products being larger in size and having great limitations in applicable scenarios.

[0042] In addition, the use of metal sensors in related technologies also brings about a series of other problems. First, the cost of metal sensors is relatively high, which increases the overall cost of the product. Second, metal sensors require a larger installation space, which is contrary to the original design intention of small-volume electromagnets. Finally, metal sensors have a certain dependence on the structure of the electromagnet. Once the structure of the electromagnet changes, the sensor may need to be redesigned or adjusted, which increases the difficulty of design and manufacturing.

[0043] In view of this, this patent aims to provide an in-place sensing electromagnet that can sense short-axis movement accurately and reliably, and can solve the technical problem that the prior art cannot sense short-axis movement.

[0044] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0045] Please refer to Figures 1 to 5 The utility model embodiment provides a position sensing electromagnet, comprising:

[0046] The electromagnet assembly 100 includes a housing 110, a fixed iron core 120, a moving iron core 130, a coil 140, an elastic member 150 and a stopper 160. The fixed iron core 120 is fixedly connected to the housing 110, the moving iron core 130 is movably connected to the housing 110, and the moving iron core 130 is limited to move in a direction close to or away from the fixed iron core 120. The moving iron core 130 is located on one side of the fixed iron core 120. The coil 140 is disposed around the fixed iron core 120 and the moving iron core 130 at the same time. The coil 140 is used to control the formation of mutual attraction between the fixed iron core 120 and the moving iron core 130. The stopper 160 is fixedly connected to a side of the moving iron core 130 away from the fixed iron core 120. The opposite ends of the elastic member 150 are respectively connected to the housing 110 and the stopper 160, so that the stopper 160 forms a tendency to move away from the fixed iron core 120.

[0047] The sensing component 200 includes a circuit board 210 and an elastic trigger key 220. The circuit board 210 is fixedly connected to the shell 110. The elastic trigger key 220 is connected to one side of the circuit board 210 close to the limit member 160. The elastic trigger key 220 is used to contact the limit member 160 to trigger the in-place sensing circuit in the circuit board 210. The circuit board 210 is provided with an in-place sensing circuit matching the elastic trigger key 220. The elastic trigger key 220 can trigger the in-place sensing circuit under the drive of the limit member 160, thereby generating a corresponding in-place sensing signal.

[0048] Taking the position where the elastic trigger key 220 is located on the side of the limiter 160 close to the fixed iron core 120 as an example, the working process of the electromagnetic control structure of the in-position induction in the embodiment of the utility model is as follows:

[0049] refer to Figure 1 As shown, when the coil 140 is powered off, the elastic member 150 forms an elastic force to move the limit member 160 away from the fixed iron core 120, and the movable iron core 130 moves away from the fixed iron core 120 following the limit member 160, and the limit member 160 moves away from the elastic trigger key 220. In this state, the in-position sensing circuit in the circuit board 210 is in a normal state;

[0050] refer to Figure 2As shown, when the coil 140 is energized, the coil 140 causes the fixed iron core 120 and the moving iron core 130 to form magnetic fields with the same direction at the same time by electromagnetic induction. Under the action of the magnetic force, the fixed iron core 120 and the moving iron core 130 attract each other, and the limit member 160 follows the moving iron core 130 to move closer to the fixed iron core 120. The limit member 160 presses the elastic trigger key 220, thereby triggering the in-position sensing circuit in the circuit board 210 to generate an in-position sensing signal.

[0051] The coil 140 simultaneously controls the fixed iron core 120 and the moving iron core 130 to generate a magnetic field, and the elastic member 150 can be used to control the limit member 160 to form a reciprocating motion close to or away from the fixed iron core 120, so as to achieve a reliable electromagnetic control effect. The elastic trigger key 220 is arranged on one side of the limit member 160, and the elastic trigger key 220 can detect the position of the limit member 160 by contact, and then the elastic trigger key 220 can trigger the in-place sensing circuit in the circuit board 210, which can be used to realize the analysis of the in-place sensing result. Once an abnormality such as a jam is found, the in-place sensing result is used to take corresponding safety measures, and the safety is good. The elastic trigger key 220 can accurately reflect the position of the limit member 160, and the contact sensing method can adapt to the electromagnetic iron assembly 100 of different strokes, especially when it can adapt to the sensing of short-axis action, thereby effectively realizing the small size design of the electromagnetic control structure, which has a wide range of applications, and the overall structure is simple and stable. It can be combined with the design for realizing precise control, fault diagnosis and performance optimization of the electromagnet, and can effectively adapt to the scenes such as intelligent control. The design of the sensing assembly 200 can also effectively reduce the cost.

[0052] It is understandable that at least two elastic trigger keys 220 are provided, each elastic trigger key 220 is connected to the circuit board 210 , and the trigger end of each elastic trigger key 220 is directly opposite to the limiting member 160 .

[0053] Specifically, the limiting member 160 is a conductive structural member, and the position sensing circuit in the circuit board 210 can be configured to be turned on when the limiting member 160 contacts the elastic trigger key 220 .

[0054] It is understandable that, in order to meet complex usage requirements, the elastic trigger keys 220 can also be set to four, six, etc.

[0055] It can be understood that all the elastic trigger keys 220 are evenly distributed around the moving iron core 130, that is, all the elastic trigger keys 220 are evenly distributed around the projection of the moving iron core 130 on the circuit board 210. By arranging the elastic trigger keys 220 to be evenly distributed around the moving iron core 130, the triggering accuracy of the elastic trigger keys 220 on the limit member 160 can be effectively improved. When the limit member 160 is offset, the elastic trigger keys 220 can also be triggered, so that the in-position sensing circuit in the circuit board 210 produces an in-position sensing signal.

[0056] It can be understood that the elastic trigger key 220 is a spring needle, the needle tube of the spring needle is fixedly connected to the circuit board 210, the needle tube of the spring needle is connected to the in-position sensing circuit in the circuit board 210, and the needle head of the spring needle is facing the limit member 160, so that the limit member 160 triggers the in-position sensing circuit in the circuit board 210 by pushing the needle head of the spring needle.

[0057] A spring needle is a spring-type probe that is formed by riveting and pre-pressing three basic components: a needle, a spring, and a needle tube. It has a precision spring structure inside and is mainly used for current and signal transmission, that is, charging and conduction.

[0058] It can be understood that the elastic trigger key 220 is an elastic conductive sheet, the end of the elastic conductive sheet is connected to the circuit board 210, and the body of the elastic conductive sheet is bent and protrudes from the side of the circuit board 210 close to the limit member 160, so that the limit member 160 can form a reliable contact with the elastic trigger key 220 when moving close to the circuit board 210 and be effectively isolated from other structures of the circuit board 210, which can effectively improve the reliability of the in-place sensing.

[0059] It can be understood that the circuit board 210 is located on the side of the limit member 160 close to the fixed iron core 120, the circuit board 210 is provided with a clearance hole 211, the moving iron core 130 is inserted into the clearance hole 211, the moving iron core 130 can move through the clearance hole 211, the electromagnet assembly 100 and the induction assembly 200 are integrated in a compact structure, which can effectively improve the integration of the overall structure, thereby reducing the volume of the electromagnetic control structure, and can effectively adapt to the design requirements of small equipment.

[0060] It can be understood that the elastic member 150 is a spring, the opposite ends of the spring are respectively abutted against the shell 110 and the limit member 160, the spring is sleeved outside the fixed iron core 120, and the spring is passed through the yielding through hole 211. The spring can effectively realize the reset movement of the limit member 160.

[0061] In addition to being a spring, the elastic member 150 may also be other elastic components that can realize the restoring movement of the limiting member 160 .

[0062] It can be understood that the electromagnet assembly 100 also includes an insulating sheet 170, which is located on the side of the circuit board 210 close to the coil 140. The insulating sheet 170 can effectively prevent the circuit board 210 from breaking. The insulating sheet 170 is provided with an insulating clearance hole 171, and the moving iron core 130 is inserted into the insulating clearance hole 171. The insulating clearance hole 171 of the insulating sheet 170 can realize limiting guidance of the moving iron core 130.

[0063] Specifically, when the elastic member 150 is configured as a spring, one end of the spring away from the limiting member 160 abuts against the insulating sheet 170 .

[0064] It can be understood that the electromagnet assembly 100 also includes a guide tube 180 fixedly connected to the shell 110, the fixed iron core 120 is located at one end of the guide tube 180, the limit member 160 is located outside the other end of the guide tube 180, the moving iron core 130 is slidably connected to the guide tube 180, and the coil 140 is wound outside the guide tube 180. The guide tube 180 can effectively limit the sliding trajectory of the moving iron core 130, thereby improving the reliability of the operation of the electromagnetic control structure. The guide tube 180 can be set as a stainless steel tube.

[0065] The shell 110 can be configured to include a bracket and a cover plate, the cover plate is provided with a guide hole, the moving iron core 130 is inserted into the guide hole, and the movement trajectory of the moving iron core 130 can be restricted through the guide hole, thereby improving the reliability of the operation of the battery control structure.

[0066] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A position sensing electromagnet, characterized in that: include: An electromagnet assembly (100) comprises a housing (110), a fixed iron core (120), a moving iron core (130), a coil (140), an elastic member (150) and a stopper (160), wherein the fixed iron core (120) is fixedly connected to the housing (110), the moving iron core (130) is movably connected to the housing (110), the moving iron core (130) is located on one side of the fixed iron core (120), the coil (140) is wound around the fixed iron core (120) and the moving iron core (130), the stopper (160) is fixedly connected to a side of the moving iron core (130) away from the fixed iron core (120), and opposite ends of the elastic member (150) are respectively connected to the housing (110) and the stopper (160) so that the stopper (160) forms a tendency to move away from the fixed iron core (120); The sensing component (200) comprises a circuit board (210) and an elastic trigger key (220), wherein the circuit board (210) is fixedly connected to the housing (110), and the elastic trigger key (220) is connected to a side of the circuit board (210) close to the limiting member (160), and the elastic trigger key (220) is used to contact the limiting member (160) to trigger a position sensing circuit in the circuit board (210).

2. The in-position sensing electromagnet according to claim 1, characterized in that: At least two of the elastic trigger keys (220) are provided, each of the elastic trigger keys (220) is connected to the circuit board (210), and the trigger end of each of the elastic trigger keys (220) is directly opposite to the limiting member (160).

3. The in-position sensing electromagnet according to claim 2, characterized in that: All of the elastic trigger keys (220) are evenly distributed around the moving iron core (130).

4. The in-position induction electromagnet according to claim 1, characterized in that: The elastic trigger key (220) is a spring needle, the needle tube of the spring needle is fixedly connected to the circuit board (210), and the needle head of the spring needle faces the limiting member (160).

5. The in-position sensing electromagnet according to claim 1, characterized in that: The elastic trigger key (220) is an elastic conductive sheet, the end of which is connected to the circuit board (210), and the body of the elastic conductive sheet protrudes from a side of the circuit board (210) close to the limiting member (160).

6. The in-position induction electromagnet according to claim 1, characterized in that: The circuit board (210) is located on a side of the limiting member (160) close to the fixed iron core (120), the circuit board (210) is provided with a clearance through hole (211), and the moving iron core (130) is passed through the clearance through hole (211).

7. The in-position sensing electromagnet according to claim 6, characterized in that: The elastic member (150) is a spring, the spring is sleeved outside the fixed iron core (120), and the spring is passed through the clearance through hole (211).

8. The in-position sensing electromagnet according to claim 6, characterized in that: The electromagnet assembly (100) further comprises an insulating sheet (170), the insulating sheet (170) being located on a side of the circuit board (210) close to the coil (140), the insulating sheet (170) being provided with an insulating clearance hole (171), and the moving iron core (130) being passed through the insulating clearance hole (171).

9. The in-position sensing electromagnet according to claim 1, characterized in that: The electromagnet assembly (100) further comprises a guide tube (180) fixedly connected to the housing (110), the fixed iron core (120) is located at one end of the guide tube (180), the moving iron core (130) is slidably connected to the guide tube (180), and the coil (140) is wound outside the guide tube (180).

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