CN210982704U - Magnetism detection tool and magnetism detector - Google Patents
Magnetism detection tool and magnetism detector Download PDFInfo
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- CN210982704U CN210982704U CN201920940469.1U CN201920940469U CN210982704U CN 210982704 U CN210982704 U CN 210982704U CN 201920940469 U CN201920940469 U CN 201920940469U CN 210982704 U CN210982704 U CN 210982704U
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Abstract
The utility model relates to a magnetism detection tool and magnetism detector, magnetism detection tool includes: the magnetic attraction piece is arranged on the bottom plate, the bottom plate is provided with an installation surface, the connecting switch is arranged on the installation surface, one end of the elastic piece is arranged on the installation surface, the other end of the elastic piece is used for abutting against the magnetic attraction piece to be detected, and the height of the elastic piece protruding from the installation surface is larger than the height of the connecting switch protruding from the installation surface. To be surveyed the magnetism and inhale the piece and place on the elastic component, magnetism is inhaled the piece and is attracted the magnetism of being surveyed and inhale the piece and be close to the bottom plate according to the magnetic strength of being surveyed the magnetism and inhale the piece, and the elastic component is compressed because of being surveyed the magnetism and inhale the appeal between the piece, and when the height of elastic component and linked switch height are equal, is surveyed magnetism and is inhaled piece and linked switch butt for linked switch's state changes, thereby learns that the magnetic strength of being surveyed the magnetism and inhale the piece exceeds standard, has improved detection efficiency.
Description
Technical Field
The utility model relates to a magnetism detects technical field, especially relates to a magnetism detection tool and magnetism detector.
Background
The liquid crystal display mobile phone is one of the important parts of the mobile phone, wherein the liquid crystal display module mainly comprises a cover plate, L CD, FPC, backlight and other parts, and the backlight is used for providing a light source for the liquid crystal display module.
However, the frame made of stainless steel has different magnetic strengths due to different material components and different smelting and extrusion forming processes of the stainless steel sheet, and when the magnetic strength of the frame is too high, the normal work of related sensors (such as a geomagnetic sensor, a digital compass, a mobile phone antenna and the like) inside a mobile phone can be disturbed, and the process of measuring the stainless steel frame by using an electronic gaussmeter is complex, so that the detection efficiency is reduced, and the production cost is correspondingly increased.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for a magnetic detection tool and a magnetic detector with simple structure and improved detection efficiency.
A magnetic detection fixture, comprising: the magnetic attraction device comprises a bottom plate, an elastic piece, a magnetic attraction piece and a connecting switch, wherein the magnetic attraction piece is arranged on the bottom plate, the bottom plate is provided with an installation surface, the connecting switch is vertically arranged on the installation surface, one end of the elastic piece is arranged on the installation surface, the other end of the elastic piece is used for abutting against the magnetic attraction piece to be detected, and the height of the elastic piece protruding from the installation surface is larger than the height of the connecting switch protruding from the installation surface.
In one embodiment, the connection switch includes a first conductor and a second conductor, the first conductor and the second conductor are respectively erected on the bottom plate, a first end of the first conductor is connected with a first end of the indication circuit, a second end of the first conductor is abutted with the magnetic attraction piece to be measured, a first end of the second conductor is connected with a second end of the indication circuit, and a second end of the second conductor is abutted with the magnetic attraction piece to be measured.
In one embodiment, the mounting structure further comprises a bearing plate, and the bearing plate is connected with one end, away from the mounting surface, of the elastic piece.
In one embodiment, the bearing plate is provided with a through hole, and the projection of the connection switch on the bearing plate is located in the through hole.
In one embodiment, the through hole includes a first through hole and a second through hole, in one embodiment, the connection switch includes a first conductor and a second conductor, the first conductor and the second conductor are respectively erected on the bottom plate, a first end of the first conductor is connected with a first end of the indicating circuit, a second end of the first conductor is abutted with the magnetic attraction piece to be measured, a first end of the second conductor is connected with a second end of the indicating circuit, a second end of the second conductor is abutted with the magnetic attraction piece to be measured, the first through hole corresponds to the first conductor, and the second through hole corresponds to the second conductor.
In one embodiment, the magnetic attraction piece is arranged on the installation surface, and the distance from the connection switch to the installation surface is greater than or equal to the distance from the magnetic attraction piece to the installation surface.
In one embodiment, the resilient member comprises a spring.
In one embodiment, the number of the elastic members is multiple, and the multiple elastic members are uniformly distributed on the bottom plate.
In one embodiment, the number of the elastic members is four, and the four elastic members are distributed at four corners of the bottom plate.
A magnetic detector comprises an indicating circuit and the magnetic detection jig in any one of the embodiments, wherein the indicating circuit comprises a power supply and an indicator, and the power supply, the indicator and the connecting switch are connected in series.
In above-mentioned magnetism detection tool and magnetism detector, to be surveyed the magnetism and inhale the piece and place on the elastic component, magnetism is inhaled the piece and is close to the bottom plate according to the magnetic strength attraction quilt survey magnetism of being surveyed the magnetism and inhale the piece, the elastic component is compressed because of the appeal between being surveyed the magnetism and inhale the piece promptly, when the height and the linked switch height of elastic component are equal, be surveyed magnetism and inhale piece and linked switch butt, make linked switch's state change, thereby detect and obtain the magnetism strength that is surveyed the magnetism and inhale the piece and exceed standard, detection efficiency has been improved.
Drawings
Fig. 1 is a schematic structural view of a magnetic detection fixture according to an embodiment;
fig. 2 is a side view of the magnetic detection jig of fig. 1;
FIG. 3 is a schematic structural view of a magnetic detection fixture according to another embodiment;
fig. 4 is a side view of the magnetic detection jig of fig. 3;
FIG. 5 is a circuit diagram of an indicating circuit according to an embodiment.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
For example, a magnetic detection fixture includes: the magnetic attraction device comprises a bottom plate, an elastic piece, a magnetic attraction piece and a connecting switch, wherein the magnetic attraction piece is vertically arranged on the bottom plate, the bottom plate is provided with an installation surface, the connecting switch is arranged on the installation surface, one end of the elastic piece is arranged on the installation surface, the other end of the elastic piece is used for abutting against the magnetic attraction piece to be detected, and the height of the elastic piece protruding from the installation surface is larger than the height of the connecting switch protruding from the installation surface. In above-mentioned magnetism detection tool, to be surveyed the magnetism and inhale the piece and place on the elastic component, magnetism is inhaled the piece and is inhaled the magnetism according to the magnetic strength attraction of being surveyed the magnetism and is close to the bottom plate, the elastic component is because of being surveyed the magnetism and inhale the appeal between the piece and compressed promptly, highly when the equal time with the linked switch height of elastic component, it inhales piece and linked switch butt to be surveyed the magnetism, make linked switch's state change, thereby learn that the magnetic strength of being surveyed the magnetism and inhale the piece exceeds standard, detection efficiency is improved.
Referring to fig. 1, a magnetic detection fixture 10 according to an embodiment includes: the magnetic attraction device comprises a bottom plate 100, an elastic piece 200, a magnetic attraction piece 300 and a connecting switch 400, wherein the magnetic attraction piece 300 is arranged on the bottom plate 100, the bottom plate 100 is provided with an installation surface 110, the connecting switch 400 is vertically arranged on the installation surface 110, one end of the elastic piece 200 is arranged on the installation surface 110, the other end of the elastic piece 200 is used for abutting against the magnetic attraction piece to be tested, please refer to fig. 2 together, and the height of the elastic piece 200 protruding from the installation surface 110 is greater than the height of the connecting switch 400 protruding from the installation surface 110.
The elastic member is used for being compressed when the magnetic attraction member to be measured receives the magnetic force of the magnetic attraction member 300, so that the magnetic attraction member to be measured is abutted to the connection switch 400. The connecting switch 400 is used for connecting an indicating circuit, and when the connecting switch 400 is abutted by the magnetic attraction piece to be tested, two contacts of the connecting switch 400 are connected, so that the testing circuit is closed, and the indicating circuit is conducted.
In this embodiment, the magnetic member to be detected is placed on the elastic member 200, the magnetic member 300 attracts the magnetic member to be detected to be close to the bottom plate 100 according to the magnetic strength of the magnetic member to be detected, i.e. the elastic member 200 is compressed due to the attraction between the magnetic member to be detected and the magnetic member 300, when the height of the elastic member 200 is equal to the height of the connection switch 400, the magnetic member to be detected abuts against the connection switch 400, so that the state of the connection switch 400 changes, the magnetic strength of the magnetic member to be detected exceeds the standard, and the detection efficiency is improved.
In an embodiment, referring to fig. 3 and fig. 4, the magnetic detection fixture 10 further includes a carrier plate 500, and the carrier plate 500 is connected to an end of the elastic element 200 away from the mounting surface 110. The bearing plate 500 is located on the elastic member 200, and the bearing plate 500 is used for bearing the magnetic attraction member to be tested. When the magnetic attraction piece to be tested is placed on the magnetic detection jig for magnetic strength, one surface of the bearing plate 500 departing from the elastic piece 200 is used for lifting the magnetic attraction piece to be tested, namely, the bearing plate 500 is located between the magnetic attraction piece to be tested and the elastic piece 200. In this embodiment, one end of the elastic member 200 away from the bottom plate 100 is a convex structure, and when the magnetic member to be measured is placed on the elastic member 200, the contact manner between the magnetic member to be measured and the elastic member 200 is point-surface contact, that is, the end of the elastic member 200 acts on one surface of the magnetic member to be measured close to the bottom plate 100, so that the contact area between the magnetic member to be measured and the elastic member 200 is small, and the direct contact between the two easily causes damage to the one surface of the magnetic member to be measured close to the bottom plate 100. In order to avoid the direct contact between the magnetic member to be measured and the elastic member 200, a carrier plate 500 is disposed on the elastic member 200, and the carrier plate 500 separates the magnetic member to be measured from the elastic member 200 directly, so that the magnetic member to be measured contacts the elastic member 200 through the carrier plate 500. Thus, the tested magnetic attraction piece is arranged on the bearing plate 500 for testing the magnetic strength, and the damage of the tested magnetic attraction piece is avoided.
In this embodiment, the carrier board 500 and the bottom board 100 are both non-magnetic members, and the carrier board 500 and the bottom board 100 are both insulators, for example, the carrier board 500 and the bottom board 100 are plastic boards; as another example, the carrier plate 500 and the base plate 100 are foam plates; as another example, the loading plate 500 and the bottom plate 100 are pearl wool plates. The bearing plate 500 and the bottom plate 100 only need not generate magnetic attraction with the magnetic attraction element 300, and the bearing plate 500 and the bottom plate 100 made of other materials are not described herein again.
In one embodiment, referring to fig. 3, the carrier plate 500 is formed with a through hole 510, and the projection of the connection switch 400 on the carrier plate 500 is located in the through hole 510. The connection switch 400 is movable in the through hole 510, that is, the connection switch 400 enters and exits the through hole 510, the magnetic attraction piece to be measured is placed on the bearing plate 500, the elastic piece 200 lifts the bearing plate 500, so that the magnetic attraction piece to be measured moves in the direction perpendicular to the bottom plate 100 under the action of the attraction force of the magnetic attraction piece 300, and when the magnetic attraction piece 300 works, the distance of the movement of the bearing plate 500 towards the bottom plate 100 is determined according to the magnitude of the magnetic attraction force between the magnetic attraction piece 300 and the magnetic attraction piece to be measured. When the magnetic strength of the magnetic member to be tested is equal to or greater than the predetermined magnetic strength, the magnetic attraction force between the magnetic member to be tested and the magnetic member 300 is greater than the predetermined magnetic attraction force, so that the magnetic member to be tested drives the bearing plate 500 to move toward the bottom plate 100 under the action of the magnetic attraction force, and the connection switch 400 passes through the through hole 510, so that the magnetic member to be tested is abutted against the connection switch 400, thereby changing the operating state of the connection switch 400; when the magnetic strength of the magnetic member to be measured is smaller than the predetermined magnetic strength, the connection switch 400 cannot pass through the through hole 510 because the magnetic attraction force between the magnetic member to be measured and the magnetic member 300 is too small, so that the state of the connection switch 400 cannot be changed. Therefore, the connecting switch 400 is abutted to the magnetic attraction piece to be detected through the through hole 510 on the bearing plate 500, so that the state of the connecting switch 400 is changed, whether the magnetic attraction strength of the magnetic attraction piece 300 exceeds the standard or not is determined according to the state change of the connecting switch 400, and the detection efficiency of the magnetic strength of the magnetic attraction piece to be detected is improved.
In one embodiment, the states of the connection switch 400 include an open state and a closed state. In this embodiment, whether the magnetic attraction strength of the magnetic attraction member 300 exceeds the standard is determined by detecting whether the state of the connection switch 400 changes. For example, before the tested magnetic attraction piece is placed on the bearing plate 500, the state of the connection switch 400 is an off state, and after the tested magnetic attraction piece is placed on the bearing plate 500, if the state of the connection switch 400 is changed into an on state, the magnetic attraction strength of the tested magnetic attraction piece exceeds the standard, otherwise, if the state of the connection switch 400 is still an off state, the magnetic attraction strength of the tested magnetic attraction piece is normal; for another example, before the tested magnetic attraction member is placed on the bearing plate 500, the state of the connection switch 400 is a closed state, and after the tested magnetic attraction member is placed on the bearing plate 500, if the state of the connection switch 400 is changed to an open state, the magnetic attraction strength of the tested magnetic attraction member exceeds the standard, otherwise, if the state of the connection switch 400 is still the closed state, the magnetic attraction strength of the tested magnetic attraction member is normal. Therefore, as long as the state of the connecting switch 400 changes, the magnetic strength of the detected magnetic attraction piece can be judged to exceed the standard, so that the detection of the magnetic attraction strength of the detected magnetic attraction piece is more convenient, and the detection efficiency of the magnetic strength of the detected magnetic attraction piece is improved.
It should be noted that the connection switch 400 has two contacts, when the measured magnetic attraction member abuts against the connection switch 400, the two contacts of the connection switch 400 are connected, and the connection of the two contacts may be that the movable end of the connection switch 400 abuts against the two contacts under the acting force of the measured magnetic attraction member, so that the two contacts are connected, thereby implementing the conduction of the indication circuit; in addition, the two contacts can be connected through the tested magnetic attraction piece, namely, the tested magnetic attraction piece is a conductor, and the two contacts are electrically connected through the tested magnetic attraction piece, so that the conduction of the indicating circuit is realized.
In one embodiment, the connection switch is a button switch, when the magnetic attraction piece to be measured is placed on the bearing plate, the magnetic attraction piece to be measured is attracted by the magnetic attraction piece, and the magnetic attraction piece to be measured is abutted against the button switch, so that the state of the button switch is changed, and the fact that the magnetic strength of the magnetic attraction piece to be measured exceeds the standard is determined.
In one embodiment, referring to fig. 3, the connection switch 400 includes a first conductor 410 and a second conductor 420, the first conductor 410 and the second conductor 420 are respectively erected on the bottom board 100, a first end of the first conductor 410 is electrically connected to a first end of the indication circuit, a second end of the first conductor 410 is abutted to the magnetic attraction piece to be measured, a first end of the second conductor 420 is electrically connected to a second end of the indication circuit, and a second end of the second conductor 420 is abutted to the magnetic attraction piece to be measured.
In this embodiment, the two contacts of the connection switch 400 are a first conductive body 410 and a second conductive body 420, respectively. In this embodiment, the material of the magnetic attraction piece to be measured is a conductive material, and when the magnetic attraction piece to be measured contacts the first conductor 410 and the second conductor 420, the first conductor 410 and the second conductor 420 are electrically connected. The connection switch 400 is used for connecting with an indication circuit, the connection switch 400 is a switch element of the indication circuit, the first conductor 410 and the second conductor 420 are separately arranged, so that the on and off of the indication circuit are determined according to the on and off between the first conductor 410 and the second conductor 420, for example, when the first conductor 410 and the second conductor 420 are on, the indication circuit is on; for another example, if the first conductor 410 and the second conductor 420 are disconnected, the indicator circuit is open. Before the magnetic member to be tested is placed on the carrier plate 500, the first conductor 410 and the second conductor 420 are in an off state, that is, the indication circuit is in an off state. After the magnetic attraction piece to be measured is placed on the carrier plate 500, if the magnetic attraction strength of the magnetic attraction piece to be measured is normal, so that the magnetic attraction force between the magnetic attraction piece to be measured and the magnetic attraction piece 300 is smaller than the preset magnetic attraction force, the state between the first conductor 410 and the second conductor 420 is still in an off state, and the indicating circuit is turned off; if the magnetic attraction strength of the detected magnetic attraction piece exceeds the standard, the magnetic attraction force between the detected magnetic attraction piece and the magnetic attraction piece 300 is greater than or equal to the preset magnetic attraction force, the first conductor 410 and the second conductor 420 are in a conducting state, and the indicating circuit is in a conducting state. Therefore, the magnetic suction strength of the magnetic suction piece to be detected is judged according to the state of the indicating circuit, namely the conduction of the indicating circuit indicates that the magnetic suction strength of the magnetic suction piece to be detected exceeds the standard, and the detection efficiency of the magnetic strength of the magnetic suction piece to be detected is improved. In this embodiment, the first conductor 410 and the second conductor 420 are commonly disposed in one through hole 510, but the distance between the first conductor 410 and the second conductor 420 is large.
In an embodiment, referring to fig. 3, the through hole 510 includes a first through hole 511 and a second through hole 512, the first through hole 511 corresponds to the first conductor 410, the first conductor 410 movably passes through the first through hole 511, the second through hole 512 corresponds to the second conductor 420, and the second conductor 420 movably passes through the second through hole 512. In this embodiment, the first conductor 410 and the second conductor 420 correspond to one through hole 510, so that the first conductor 410 and the second conductor 420 are prevented from being too close to each other due to being disposed in the same through hole 510, and dust particles or water vapor in the air or residues with electrical conductivity in the detection process fall into the first conductor 410 and the second conductor 420 due to the too close distance between the first conductor 410 and the second conductor 420, so that the first conductor 410 and the second conductor 420 are conducted, and detection errors are easily caused. By separately arranging the first conductor 410 and the second conductor 420, the distance between the first conductor 410 and the second conductor 420 is increased, so that the first conductor 410 and the second conductor 420 are conducted only when the magnetic strength of the magnetic attraction piece to be detected exceeds the standard, and the detection error rate of the magnetic detection jig is reduced.
In an embodiment, referring to fig. 3 and fig. 4, the magnetic attraction element 300 is disposed on the mounting surface 110, and a distance from the connection switch 400 to the mounting surface 110 is greater than or equal to a distance from the magnetic attraction element 300 to the mounting surface 100. In this embodiment, the height of the elastic element 200 and the connection switch 400 protruding from the mounting surface 110 is greater than the height of the magnetic element 300 protruding from the mounting surface 110. Magnetism inhale piece 300 and be used for providing magnetic attraction, be surveyed magnetism inhale the piece with inhale the size that the distance size between the piece 300 influences magnetic attraction, in order to detect better surveyed magnetism inhale the piece, magnetism inhale piece 300 set up in install face 110 is last, make surveyed magnetism inhale the piece with inhale the increase of magnetic attraction between the piece 300, thereby make survey magnetism inhale the piece and remove more easily at the in-process that detects, avoided because the elastic coefficient of elastic component 200 is too big and the unable circumstances that removes of being surveyed magnetism inhale the piece. Moreover, through the design the height of piece 300 is inhaled to magnetism, the height of piece 300 is inhaled to magnetism is for the piece 300 is inhaled and is kept away from the one end of bottom plate 100 is protruding in the height of installation face 110, promptly the height of piece 300 is inhaled to magnetism is for piece 300 is inhaled along the perpendicular to the length of installation face 110, will the high design of piece 300 is inhaled to magnetism is less than elastic component 200 and linked switch 400's height makes it is in the orientation to be surveyed the magnetism inhale the piece the in-process that bottom plate 100 removed, magnetism inhale piece 300 and do not contradict to be surveyed the piece is inhaled to magnetism, avoided magnetism inhale piece 300 too high and survey magnetism inhale the piece can't with linked switch 400 contacts, thereby guaranteed the normal detection of magnetism detection tool.
In this embodiment, the bottom plate deviates from the one side of piece is inhaled as the loading face to magnetism, promptly the bottom plate deviates from the one side of elastic component is used for butt and desktop or ground, like this, avoids piece and desktop or ground contact are inhaled to magnetism, thereby has avoided magnetism detection tool places the unevenness and influences the testing result.
In one embodiment, the resilient member comprises a spring. Through the helical structure of spring, for the magnetic attraction piece that is surveyed provides corresponding elasticity, makes the magnetic attraction piece that is surveyed move under the effect of magnetic attraction and elasticity on the bottom plate, thereby be convenient for right the detection of the magnetic strength of being surveyed the magnetic attraction piece.
In this embodiment, in order to reduce the shared space of the part that sets up on the installation face, magnetism inhale the piece set up in the spring, promptly magnetism inhale the piece accept in the middle part space of spring, make magnetism inhale the piece with the spring unites two into one, thereby has reduced the spring with inhale the shared space of piece, and then make magnetism detection tool's volume reduces, portable.
In one embodiment, referring to fig. 3 and 4, the magnetic element 300 is located at the middle of the bottom plate 100. The measured magnetic attraction piece is right opposite to the magnetic detection jig, namely, the measured magnetic attraction piece is positioned on the projection of the bottom plate 100 and is positioned in the center of the bottom plate 100, and in order to enable the magnetic attraction force received by the measured magnetic attraction piece to be uniform, the magnetic attraction piece 300 is arranged at the central position of the bottom plate 100, so that the measured magnetic attraction piece can move more stably, the probability that the measured magnetic attraction piece inclines and slides down in the moving process is reduced, and the magnetic detection of the magnetic detection jig is more accurate.
In an embodiment, the number of the elastic members 200 is multiple, and the elastic members 200 are uniformly distributed on the bottom plate 100. The elastic piece 200 provides corresponding elasticity for the magnetic piece to be detected, and the elastic piece 200 is uniformly distributed, so that the elastic force applied to the magnetic piece to be detected is equal, a plurality of elastic pieces 200 uniformly act on the magnetic piece to be detected, the probability that the magnetic piece to be detected inclines and slides down in the moving process is reduced, and the magnetic detection of the magnetic detection jig is more accurate.
In this embodiment, the elastic member and the magnetic attraction member are in one-to-one correspondence, the elastic member is a spring, and each magnetic attraction member is correspondingly disposed in the spring, so that the acting force applied to the magnetic attraction member to be measured is more uniform.
In one embodiment, the number of the elastic members is four, and the four elastic members are distributed at four corners of the bottom plate. Like this, four the elastic component supports the four corners of loading board makes the elasticity that the loading board received is even, thereby makes each at the in-process that detects the flexible distance of elastic component is the same, thereby makes the in-process that detects the loading board is on a parallel with the bottom plate reciprocates, has reduced and has been inhaled the piece by magnetism and follow the probability of landing on the loading board, has improved and has been inhaled the piece by magnetism and be located in the testing process stability on the loading board.
In an embodiment, there is provided a magnetic detector, which includes an indication circuit and the magnetic detection fixture in any of the above embodiments, wherein the indication circuit includes a power supply and an indicator, and the power supply, the indicator and the connection switch are connected in series. The connecting switch is used for controlling the connection and disconnection of the indicating circuit, and the indicator is used for responding to the state of the indicating circuit, namely when the connecting switch is connected, the indicator works, otherwise, the indicator does not work.
In an embodiment, taking the tested magnetic component as a backlight bezel of a mobile phone and the elastic component as a spring as an example for further explanation, referring to fig. 3, the bottom plate 100 has a mounting surface 110, the spring 200, the magnetic component 300 and the connection switch 400 are disposed on the mounting surface 110, the connection switch 400 includes a first conductor 410 and a second conductor 420, a bearing plate 500 is disposed at an end of the spring 200 away from the mounting surface 110, the bearing plate 500 is disposed with a first through hole 511 and a second through hole 512, the first through hole 511 corresponds to the first conductor 410, the second through hole 512 corresponds to the second conductor 420, and the height of the magnetic component 300 protruding from the mounting surface 110 is less than the height of the first conductor 410 and the second conductor 420 protruding from the mounting surface 110 of the spring 200. The backlight iron frame is made of conductive material, the backlight iron frame is arranged on the bearing plate 500, the backlight iron frame moves towards the bottom plate 100 under the magnetic attraction effect of the magnetic attraction piece 300, when the magnetic strength of the backlight iron frame exceeds the standard, the backlight iron frame drives the bearing plate 500 to move towards the bottom plate 100, and, the first conductive body 410 is contacted with the backlight bezel through the first through hole 511, the second conductor 420 passes through the second via 512 to contact the backlight bezel, the first conductor 410 and the second conductor 420 are electrically connected, so that the first conductor 410 and the second conductor 420 are conducted, and then make indicating circuit switches on, the work of indicator is convenient for the measurement personnel to judge the magnetic attraction intensity of indisputable frame in a poor light exceeds standard, has improved the detection efficiency of magnetism detector.
In this embodiment, the heights of the first conductor and the second conductor protrusions are equal to the height of the bottom plate, so that the supporting plate is parallel to the bottom plate, and the backlight bezel is stably disposed on the supporting plate. The piece is right is inhaled to magnetism the chase produces magnetic attraction in a poor light, makes the chase extrusion in a poor light the spring makes the magnetic attraction that the chase received in a poor light converts the stroke of the corresponding spring into, promptly the size of the magnetic attraction that the chase received in a poor light with the extrusion distance of spring is relevant, promptly the size of the magnetic attraction that the chase received in a poor light with the difference of the length of spring is directly proportional. In order to accurately detect whether the magnetic strength of the backlight iron frame exceeds the standard or not, the elastic coefficient of the spring and the heights of the first conductor and the second conductor bulges and the bottom plate are set, so that when the magnetic strength of the backlight iron frame reaches the preset magnetic strength, the spring is just extruded to be electrically connected with the first conductor and the second conductor, an indicating circuit is conducted, an indicator is enabled to indicate, and the current magnetic strength of the backlight iron frame is convenient to judge. That is, by setting the elastic coefficient of the spring and the heights of the first conductor and the second conductor bulges and the bottom plate, the threshold value of the length extruded by the spring corresponds to the threshold value of the magnetic strength, and the threshold value corresponds to the numerical value of the standard exceeding of the magnetic strength of the backlight iron frame, so that the magnetic strength of the backlight iron frame is converted into the stroke of the spring, and then the working state of the indicator of the indicating circuit is convenient to judge whether the magnetic strength of the backlight iron frame exceeds the standard or not through the on-off condition of the backlight iron frame, the first conductor and the second conductor, for example, when the indicator lamp works, the magnetic strength of the backlight iron frame exceeds the standard; when the indicator does not work, the magnetic strength of the backlight iron frame is normal.
In one embodiment, the indicator includes L ED indicator light, buzzer, and device capable of operating when powered on, and operates to indicate the conduction of the indicator circuit after the indicator is powered on, so as to detect whether the magnetic attraction strength of the detected magnetic device exceeds a preset threshold value.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A magnetic detection jig is characterized by comprising: the magnetic attraction device comprises a bottom plate, an elastic piece, a magnetic attraction piece and a connecting switch, wherein the magnetic attraction piece is arranged on the bottom plate, the bottom plate is provided with an installation surface, the connecting switch is vertically arranged on the installation surface, one end of the elastic piece is arranged on the installation surface, the other end of the elastic piece is used for abutting against the magnetic attraction piece to be detected, and the height of the elastic piece protruding from the installation surface is larger than the height of the connecting switch protruding from the installation surface.
2. The magnetic detection tool of claim 1, wherein the connection switch includes a first conductor and a second conductor, the first conductor and the second conductor are respectively erected on the bottom plate, a first end of the first conductor is connected to a first end of the indication circuit, a second end of the first conductor abuts against the magnetic attraction piece to be detected, a first end of the second conductor is connected to a second end of the indication circuit, and a second end of the second conductor abuts against the magnetic attraction piece to be detected.
3. The magnetic detection tool of claim 1, further comprising a bearing plate connected to an end of the elastic member away from the mounting surface.
4. The magnetic detection tool of claim 3, wherein the bearing plate has a through hole, and the projection of the connection switch on the bearing plate is located in the through hole.
5. The magnetic detection tool of claim 4, wherein the through holes include a first through hole and a second through hole, the connection switch includes a first conductor and a second conductor, the first conductor and the second conductor are respectively erected on the bottom plate, a first end of the first conductor is connected with a first end of the indication circuit, a second end of the first conductor is abutted with the magnetic attraction piece to be detected, a first end of the second conductor is connected with a second end of the indication circuit, a second end of the second conductor is abutted with the magnetic attraction piece to be detected, the first through hole corresponds to the first conductor, and the second through hole corresponds to the second conductor.
6. The magnetic detection jig of claim 1, wherein the magnetic member is disposed on the mounting surface, and a distance from the connection switch to the mounting surface is greater than or equal to a distance from the magnetic member to the mounting surface.
7. The magnetic detection tool of claim 6, wherein the elastic member comprises a spring.
8. The magnetic detection tool of any one of claims 1 to 7, wherein the number of the elastic members is plural, and the plural elastic members are uniformly distributed on the bottom plate.
9. The magnetic detection tool of claim 8, wherein the number of the elastic members is four, and the four elastic members are distributed at four corners of the bottom plate.
10. A magnetic detector, comprising an indication circuit and a magnetic detection fixture as claimed in any one of claims 1 to 9, wherein the indication circuit comprises a power supply and an indicator, and the power supply, the indicator and the connection switch are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920940469.1U CN210982704U (en) | 2019-06-20 | 2019-06-20 | Magnetism detection tool and magnetism detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920940469.1U CN210982704U (en) | 2019-06-20 | 2019-06-20 | Magnetism detection tool and magnetism detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881954A (en) * | 2021-01-12 | 2021-06-01 | 广东长盈精密技术有限公司 | Magnetism detection device |
| CN113607893A (en) * | 2021-08-18 | 2021-11-05 | 郑州美克盛世电子科技有限公司 | Calibration method of gas detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881954A (en) * | 2021-01-12 | 2021-06-01 | 广东长盈精密技术有限公司 | Magnetism detection device |
| CN112881954B (en) * | 2021-01-12 | 2023-08-18 | 广东长盈精密技术有限公司 | Magnetism detection device |
| CN113607893A (en) * | 2021-08-18 | 2021-11-05 | 郑州美克盛世电子科技有限公司 | Calibration method of gas detector |
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