Watch anti-magnetic performance detector

Abstract

The present application provides a watch anti-magnetic performance detector, which includes a base, at least one electromagnet or two Helmholtz coils, and a watch holder. The electromagnet is formed by combining a magnetic core and a coil. When the coil and the magnetic core are combined to form an electromagnet, the watch holder is arranged between the two poles of the magnetic core, and the formed electromagnet and the watch holder are both rotatably mounted on the base; when there are multiple coils and magnetic cores and they are combined to form multiple electromagnets, the watch holder is arranged between the multiple magnetic cores, and the multiple electromagnets are distributed in different directions; the watch placed on the watch holder is in the magnetic field in any direction formed by the electromagnet. Alternatively, the watch is in the magnetic field generated by two Helmholtz coils, and at least one of the Helmholtz coils is rotatably mounted on the base to generate magnetic fields in multiple different directions. The watch anti-magnetic performance detector can provide a higher magnetic field intensity and perform anti-magnetic performance detection in multiple directions of the watch.

Description

Technical Field

[0001] This application belongs to the technical field of detection instruments. More specifically, it relates to a watch anti-magnetic performance detector. Background Art

[0002] Existing watch anti-magnetic performance detectors generally adopt a Helmholtz coil structure. This structure has the following two defects: First, the provided magnetic field intensity is relatively low, generally up to 6000 A / M (i.e., 75 Gauss) at most, and this kind of watch anti-magnetic performance detector cannot be used for a long time, otherwise it will heat up and cause the coil to short-circuit. And now watches are exposed to magnetic field intensities greater than 75 Gauss more and more frequently, such as the magnetic field environment around the wireless charging coil of a mobile phone, a wireless charger, etc. Obviously, the existing watch anti-magnetic performance detectors cannot meet the test requirements.

[0003] Second, the current national standard GB / T 26716 and international standard ISO 764 both require that the watch anti-magnetic performance detector can perform anti-magnetic performance detection in three directions of the watch, and the magnetic field directions are 3 o'clock -> 9 o'clock, 6 o'clock -> 12 o'clock, and perpendicular to the watch dial respectively. Due to structural limitations, the existing watch anti-magnetic performance detectors can only adjust the magnetic field direction in two directions, or the tester must hold the watch by hand to adjust the orientation of the watch to achieve the detection in the third direction, which brings great inconvenience to the detection process. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a watch anti-magnetic performance detector to solve the technical problems that the existing watch anti-magnetic performance detectors provide insufficient magnetic field intensity and are not convenient for multi-directional adjustment of the magnetic field direction.

[0005] To achieve the above purpose, the technical solution adopted in this application is: Provide a watch anti-magnetic performance detector, which includes a base, at least one electromagnet or two Helmholtz coils, and a watch holder. The electromagnet is formed by combining a magnetic core and a coil, and the watch holder is used to place the watch.

[0006] When a coil and a magnetic core are combined to form an electromagnet, the watch holder is arranged between the two poles of the magnetic core, and the formed electromagnet and the watch holder are both rotatably mounted on the base to generate magnetic fields in multiple different directions; when there are multiple coils and magnetic cores and they are combined to form multiple electromagnets, the watch holder is arranged between the multiple magnetic cores, and the multiple electromagnets are distributed in different directions to generate magnetic fields in multiple different directions; the watch placed on the watch holder is in the magnetic field in any direction formed by the electromagnet;

[0007] Or, the watch is in the magnetic field generated by two Helmholtz coils, and at least one of the Helmholtz coils is rotatably mounted on the base to generate magnetic fields in multiple different directions.

[0008] Optionally, the watch anti-magnetic performance detector includes a first rotating shaft, a watch holder, and a coil support frame. The number of magnetic cores and coils is one each. The first rotating shaft stands vertically on the base. One end of the watch holder is rotatably connected to the first rotating shaft. One end of the coil support frame is rotatably connected to the first rotating shaft. The other end of the coil support frame supports the coil and the magnetic core, and both the coil and the magnetic core can be operably rotated relative to the coil support frame so that the magnetic core can be switched between a horizontal state and a vertical state. The watch seat is connected to the other end of the watch holder and is located between the two poles of the magnetic core.

[0009] Optionally, the coil support frame is L-shaped;

[0010] And / or, the watch holder is in a "C" shape.

[0011] Optionally, the watch anti-magnetic performance detector includes a coil mounting frame which has a mounting space. The magnetic core and the coil are both mounted inside the coil mounting frame, and the coil mounting frame is rotatably connected to the coil support frame.

[0012] Optionally, the watch anti-magnetic performance detector includes a second rotating shaft. The top end of the coil support frame is rotatably connected to one side of the coil mounting frame through the second rotating shaft.

[0013] Optionally, the number of magnetic cores and coils is two pairs each. Each pair of magnetic cores is spaced opposite and has opposite magnetic poles. A coil is wound around the outer periphery of each magnetic core to form a magnetic field in one direction between each pair of magnetic cores, and the two pairs of magnetic cores are rotatably mounted in the same plane.

[0014] Optionally, the watch anti-magnetic performance detector includes a coil mounting frame. The two pairs of magnetic cores are respectively mounted in the coil mounting frame, and the coil mounting frame is rotatably mounted on the base.

[0015] Optionally, the coil mounting frame is annular. All the magnetic cores are distributed inside the coil mounting frame, and the watch seat is located at the center of the coil mounting frame.

[0016] Optionally, the number of magnetic cores and coils is two pairs each. Each magnetic core and a coil are combined to form an annular magnetizing coil. The four magnetizing coils are grouped in pairs. The two magnetizing coils in the same group are spaced opposite and have opposite magnetic poles to form a magnetic field in one direction;

[0017] Or, two Helmholtz coils are arranged vertically to form magnetic fields in two directions.

[0018] Optionally, mounting shafts are respectively provided on two opposite sides of the base. The two magnetizing coils in the same group are connected as a whole. The two groups of magnetizing coils are respectively corresponding and rotatably mounted on the two mounting shafts, and one group of magnetizing coils is nested inside the other group of magnetizing coils;

[0019] Alternatively, two Helmholtz coils are respectively and rotatably mounted on two mounting shafts, and one of the Helmholtz coils is nested within the other Helmholtz coil.

[0020] Optionally, the number of magnetic cores and coils is three pairs. Each pair of magnetic cores is spaced opposite to each other with opposite magnetic poles. A coil is wound around the outer periphery of each magnetic core to form a magnetic field in one direction between each pair of magnetic cores. Two pairs of magnetic cores are on the same mounting surface, and the mounting surface of the other pair of magnetic cores is perpendicular to the common mounting surface of the two pairs of magnetic cores.

[0021] Optionally, the watch anti-magnetic performance detector includes a coil mounting frame. The coil mounting frame has two annular mounting parts. The two pairs of magnetic cores on the same mounting surface are spaced and mounted on the inner side of one of the annular mounting parts, and the other pair of magnetic cores are spaced and mounted opposite to each other on the inner side of the other annular mounting part.

[0022] Optionally, the annular mounting part with only one pair of magnetic cores includes a first half-ring section and a second half-ring section that are relatively spaced apart. One magnetic core is mounted on the first half-ring section, and the other magnetic core is mounted on the second half-ring section. The watch base is fixedly connected to the second half-ring section, and the second half-ring section is telescopically mounted on the base through a mounting shaft.

[0023] Optionally, the watch performance anti-magnetic instrument includes a control device. The control device includes an adjustment unit. The adjustment unit is electrically connected to the coil and adjusts the current intensity passing through the coil to generate a magnetic field of a predetermined intensity.

[0024] Optionally, a microphone is provided on the watch base, and the microphone is electrically connected to the signal processing unit during detection;

[0025] And / or, an electromagnetic induction signal sensor is provided on the watch base, and the electromagnetic induction signal sensor is electrically connected to the signal processing unit during detection.

[0026] The beneficial effects of the watch anti-magnetic performance detector provided by this application are as follows: Compared with the prior art, when the watch anti-magnetic performance detector of this application has only one magnetic core and one coil, the electromagnet formed by the magnetic core and the coil and the watch holder can be rotatably mounted on the base, thereby generating magnetic fields in at least three different directions; when the number of magnetic cores and coils is at least two pairs, on the one hand, it can provide a higher magnetic field intensity, which is convenient for testing higher anti-magnetic watches and meets the detection requirements. On the other hand, it can generate magnetic fields in multiple different directions. In this way, only by designing to rotate one pair of magnetic cores and coils in at most one direction, or rotating the watch holder, can the anti-magnetic performance detection be carried out in three directions of the watch. In particular, when the number of coils and magnetic cores reaches three pairs, three different directions of magnetic fields can be generated. At this time, without rotating any magnetic cores and coils, nor rotating the orientation of the watch, the anti-magnetic performance detection can be carried out in three different directions of the watch. When two Helmholtz coils are used, the watch is simultaneously in the magnetic fields generated by the two Helmholtz coils, and at least one of the Helmholtz coils can be rotatably mounted on the base, so that a total of three different directions of magnetic fields can be generated. All in all, the watch anti-magnetic performance detector can conveniently perform the transformation and test of three magnetic field orientations after placing the watch once. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of the watch anti-magnetic performance detector provided by the first embodiment of this application from one perspective, where the magnetic core is in a horizontal state;

[0029] Figure 2 It is a schematic structural diagram of the watch anti-magnetic performance detector provided by the first embodiment of this application from another perspective, where the magnetic core is in a horizontal state;

[0030] Figure 3 It is a schematic structural diagram of the watch anti-magnetic performance detector provided by the first embodiment of this application when the magnetic core rotates to a vertical state;

[0031] Figure 4 It is a schematic structural diagram of the watch anti-magnetic performance detector provided by the first embodiment of this application when the watch frame rotates to the left side of the coil support frame;

[0032] Figure 5Schematic diagram of the watch anti-magnetic performance detector provided by the first embodiment of the present application in the state where the watch frame rotates to the right side of the coil support frame;

[0033] Figure 6 Schematic diagram of the watch anti-magnetic performance detector provided by the second embodiment of the present application, where the number of coils and magnetic cores of the watch anti-magnetic performance detector is two pairs;

[0034] Figure 7 Schematic diagram of the watch anti-magnetic performance detector provided by the third embodiment of the present application, where the number of coils and magnetic cores of the watch anti-magnetic performance detector is two pairs;

[0035] Figure 8 Schematic diagram of the watch anti-magnetic performance detector provided by the fourth embodiment of the present application, where the number of coils and magnetic cores of the watch anti-magnetic performance detector is three pairs.

[0036] Among them, each reference numeral in the figure:

[0037] 10 - Base; 11 - Support part; 111 - Mounting shaft; 20 - Magnetic core; 30 - Coil; 40 - Watch seat; 50 - First rotating shaft; 60 - Watch frame; 70 - Coil support frame; 80 - Coil mounting frame; 81 - Ring-shaped mounting part; 811 - First half-ring section; 812 - Second half-ring section; 90 - Second rotating shaft. Detailed implementation manners

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0041] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0042] Please refer to Figure 1 and Figure 2 together. Now, a watch anti-magnetic performance detector provided by the first embodiment of this application will be described. The watch anti-magnetic performance detector includes a base 10, at least one magnetic core 20, at least one coil 30, and a watch holder 40. The magnetic core 20 and the coil 30 are combined to form at least one electromagnet to generate a magnetic field. The watch holder 40 is disposed between the two poles of one magnetic core 20 or between multiple magnetic cores 20. The watch holder 40 is used to place a watch. When the coil 30 and the magnetic core 20 are combined to form one electromagnet, the formed electromagnet and the watch holder 40 are both rotatably mounted on the base 10 to generate magnetic fields in multiple different directions; when the coil 30 and the magnetic core 20 are combined to form multiple electromagnets, the multiple electromagnets are distributed in different directions to generate magnetic fields in multiple different directions; the watch placed on the watch holder 40 is in any one of the formed magnetic fields.

[0043] Specifically, in the first embodiment, the base 10 is a flat support plate, the number of the magnetic core 20 and the coil 30 is both one, the magnetic core 20 is U-shaped and has two poles, and the coil 30 is wound around the outer periphery of the magnetic core 20. In this way, the magnetic core 20 and the coil 30 are combined to form an electromagnet to generate a magnetic field between the two poles of the magnetic core 20 when the coil 30 is energized. In addition to the base 10, the magnetic core 20, the coil 30, and the watch holder 40, the watch anti-magnetic performance detector further includes a first rotating shaft 50, a watch frame 60, and a coil support frame 70. The first rotating shaft 50 stands upright on the base 10. One end of the watch frame 60 is rotatably connected to the first rotating shaft 50. An installation hole is provided at one end of the watch frame 60, and the watch frame 60 is sleeved on the first rotating shaft 50 through the installation hole, so that the watch frame 60 can be operably rotated around the first rotating shaft 50. Optionally, the watch frame 60 is in a "C" shape, and the bottom end of the watch frame 60 is rotatably connected to the first rotating shaft 50. One end of the coil support frame 70 is rotatably connected to the first rotating shaft 50. An installation hole is provided at one end of the coil support frame 70, and the coil support frame 70 is sleeved on the first rotating shaft 50 through the installation hole, so that the coil support frame 70 can be operably rotated around the first rotating shaft 50. It can be understood that both the watch frame 60 and the coil support frame 70 are rotatably connected to the first rotating shaft 50. The other end of the coil support frame 70 supports the coil 30 and the magnetic core 20, and both the coil 30 and the magnetic core 20 can be operably rotated relative to the coil support frame 70, so that the magnetic core 20 can be switched between a horizontal state and a vertical state. Optionally, the coil support frame 70 is in an L shape.

[0044] In another embodiment of the present application, the watch anti-magnetic performance detector includes a coil mounting bracket 80, which has a mounting space inside and an opening on one side. The magnetic core 20 and the coil 30 are both mounted inside the coil mounting bracket 80, and the two poles of the magnetic core 20 extend out of the coil mounting bracket 80 from the opening. The coil mounting bracket 80 is rotatably connected to the coil support bracket 70.

[0045] Further, as Figure 2 shown, the watch anti-magnetic performance detector includes a second rotating shaft 90. The top end of the coil support bracket 70 is rotatably connected to one side of the coil mounting bracket 80 through the second rotating shaft 90, so that the coil mounting bracket 80 rotates relative to the coil support bracket 70, and thus the coil 30 and the magnetic core 20 mounted inside the coil mounting bracket 80 also rotate relative to the coil support bracket 70. As Figure 1 shown, at this time, the magnetic core 20 of the watch anti-magnetic performance detector is in a horizontal state; by rotating the coil mounting bracket 80, the magnetic core 20 can be rotated from the horizontal state to the vertical state, as Figure 3 shown.

[0046] The watch seat 40 is connected to the other end of the watch frame 60 and is used to place the watch to be detected. Since the two magnetic poles of the magnetic core 20 extend out of the opening of the coil mounting bracket 80, the watch seat 40 is located between the two magnetic poles of the magnetic core 20. Whether the magnetic core 20 rotates to the horizontal state or the vertical state, the watch seat 40 and the watch placed on the watch seat 40 are always located between the two magnetic poles of the magnetic core 20.

[0047] It can be understood that since the watch frame 60 can rotate around the first rotating shaft 50, the positions of the watch seat 40 and the watch relative to the magnetic core 20 can also change relatively. As Figure 4 shown, at this time, the magnetic core 20 of the watch anti-magnetic performance detector is in a horizontal state. Based on Figure 4 the direction shown, at this time, the watch frame 60 is located on the left side of the coil support bracket 70. As Figure 5 shown, rotate the watch frame 40 to rotate it around the first rotating shaft 30 to the right side of the coil support bracket 70. At this time, the watch seat 40 and the watch placed on the watch seat 40 are still between the two magnetic poles of the magnetic core 20. By rotating the watch frame 60, the direction of the magnetic field generated by the watch relative to the magnetic core 20 can be changed.

[0048] In another embodiment of the present application, the watch anti-magnetic performance detector further includes a control device (not shown in the figure). The control device includes an adjustment unit, and the adjustment unit is electrically connected to the coil 30 and adjusts the current intensity flowing into the coil 30 to generate a magnetic field with a predetermined intensity.

[0049] The control device further includes a rectifying unit and a display unit. The rectifying unit converts alternating current into direct current and inputs it into the coil 30, so as to form a constant magnetic field between the two poles of the magnetic core 20. The display unit is used to display the intensity of the currently generated magnetic field, facilitating the operator to make precise adjustments according to the displayed magnetic field intensity.

[0050] In another embodiment of the present application, the watch anti-magnetic performance detector further includes two motors (not shown in the figure). One of the motors is installed on the coil support frame 70 and the output shaft of the motor is fixedly connected to the coil mounting frame 80. The other motor is installed on the base 10, and the output shaft of the motor is fixedly connected to the watch frame 60 or the coil support frame 70. The motors are controlled to rotate through the control signal of the control device, so as to perform an automatic test. The motors are installed at positions far from the magnetic field, reducing the influence on the magnetic field and making the magnetic field distribution more uniform.

[0051] In another embodiment of the present application, the watch anti-magnetic performance detector further includes a position sensor. For effective positioning, a position sensor is provided between the coil support frame 70 and the coil mounting frame 80 to judge the relative displacement between the coil support frame 70 and the coil mounting frame 80. A position sensor is also provided between the base 10 and the coil support frame 70, or between the base 10 and the watch frame 60 to judge the relative displacement of the coil support frame 70 or the watch frame 60 relative to the base 10. Optionally, the position sensor is one of a position switch, an encoder, a laser positioning mechanism, and a Hall switch.

[0052] In another embodiment of the present application, the watch anti-magnetic performance detector further includes a magnetic field intensity sensor. For accurately judging the magnetic field intensity, a magnetic field intensity sensor is installed on the watch seat 40. The magnetic field intensity sensor transmits the magnetic field intensity information to the control device, and the control device adjusts the intensity of the direct current according to the feedback signal, so as to change the magnetic field intensity.

[0053] Compared with the prior art, the watch anti-magnetic performance detector provided by the present application has a coil support frame 70 and a watch frame 60 that are rotatably connected to a first rotating shaft 50 located on the base 10, so that the watch seat 40 and the watch placed on the watch seat 40 can rotate around the first rotating shaft 50 along with the watch frame 60 and always be located between the two poles of the magnetic field, thus changing the direction of the watch relative to the magnetic field; in addition, the magnetic core 20 can be converted between a horizontal state and a vertical state through a second rotating shaft 90, so as to realize the all-round anti-magnetic performance detection of the watch in three directions.

[0054] Please refer to Figure 6 , and now a description will be given of the watch anti-magnetic performance detector provided in the second embodiment of the present application. The watch anti-magnetic performance detector includes a base 10, at least two pairs of magnetic cores 20, at least two pairs of coils 30, and a watch seat 40.

[0055] Each pair of magnetic cores 20 are spaced opposite to each other with opposite magnetic poles. A coil 30 is wound around the outer periphery of each magnetic core 20. After the coil 30 is energized, a magnetic field in one direction is formed between each pair of magnetic cores 20. The direction of the formed magnetic field is different according to the arrangement orientation of the magnetic cores. Therefore, multiple pairs of magnetic cores 20 are distributed in different directions in space, so as to form magnetic fields in at least two directions. Each pair of magnetic cores 20 generates a magnetic field in one of the directions and is used to detect the anti-magnetic performance of the watch in one direction of the watch.

[0056] The watch holder 40 is arranged between all the magnetic cores 20 and is used to place the watch, so that the watch is placed in the magnetic field formed between each pair of magnetic cores 20. That is to say, the magnetic fields generated by each pair of magnetic cores 20 and the coil 30 can be used to detect the anti-magnetic performance of the watch.

[0057] In another embodiment of the present application, the number of both the magnetic cores 20 and the coils 10 is two pairs, and the two pairs of magnetic cores 20 are installed on the same plane. Specifically, the watch anti-magnetic performance detector further includes a coil support frame 70 and a coil mounting frame 80. The base 10 is a supporting flat plate, and a supporting portion 11 that extends vertically is provided at one side edge position of the base 10. The two pairs of magnetic cores 20 are respectively installed on the coil mounting frame 80, and the coil mounting frame 80 is rotatably installed on the supporting portion 11 of the base 10 through a rotating shaft. In this way, the two pairs of magnetic cores 20 and the coil 30 can generate magnetic fields in two different directions. In addition, the coil mounting frame 80 can rotate around the rotating shaft on the supporting portion 11, so that at least one magnetic field direction can be adjusted and changed relative to the watch placed on the watch holder 40, so as to meet the anti-magnetic performance test in at least three directions of the watch.

[0058] Optionally, the coil mounting frame 80 is annular; for example, in Figure 6 , the coil mounting frame 80 is octagonal; in other embodiments, the coil mounting frame 80 can also be circular or other reasonable shapes. All the magnetic cores 20 are evenly spaced and distributed inside the coil mounting frame 80, and the two magnetic cores 40 of the same pair are arranged opposite to each other. The watch holder 40 is a long strip-shaped support plate. One end of the watch holder 40 is fixedly connected to one side edge position of the base 10, and the other end of the watch holder 40 is used to place the watch and extends from the bottom of the coil mounting frame 80 to the center position of the coil mounting frame 80. In addition, the watch anti-magnetic performance detector also includes the control device, the position sensor, and the magnetic field intensity sensor described in the foregoing embodiment.

[0059] Compared with a structure that only includes a pair of magnetic cores and coils, the watch anti-magnetic performance detector provided by the second embodiment of the present application includes at least two pairs of coils 30 and at least two pairs of magnetic cores 20, which can provide a higher magnetic field intensity to meet the detection requirements. Moreover, when the number of coils 30 and magnetic cores 20 is more than two pairs, magnetic fields in multiple different directions can be generated. In this way, only by designing to rotate one pair of magnetic cores 20 and coils 30 in at most one direction, or rotating the watch base 40, the anti-magnetic performance detection in three directions of the watch can be satisfied.

[0060] In the third embodiment of the present application, please refer to Figure 7 , the watch anti-magnetic performance detector also includes a base 10, magnetic cores 20, coils 30, and a watch base 40. The number of magnetic cores 20 and coils 30 is also two pairs. Each magnetic core 20 and a coil 30 are combined to form an annular magnetization coil. That is to say, the magnetic cores 20 and coils 30 are combined into a circular ring as a whole one by one, and the magnetic cores 20 are hidden inside the coils 30. In this way, two pairs of coils 30 and two pairs of magnetic cores 20 are combined to form four magnetization coils. The four magnetization coils are grouped in pairs. The two magnetization coils in the same group are arranged at intervals relatively and connected integrally in the middle. The two magnetization coils in the same group have opposite polarities and generate a magnetic field in one direction.

[0061] On both sides of the base 10, a support portion 11 extends vertically. An installation space is formed between the two support portions 11. Each support portion 11 is provided with a mounting shaft 111. In other words, mounting shafts 111 are respectively provided on opposite sides of the base 10. The two groups of magnetization coils are respectively correspondingly and rotatably mounted on the two mounting shafts 111, so that the two groups of magnetization coils are both located in the installation space formed by the two support portions 11 of the base 10. Each group of magnetization coils is rotatably mounted on the mounting shaft 111 through the connecting portion in the middle thereof, so that the two groups of magnetization coils rotate around their respective corresponding mounting shafts 111. Since a certain space is formed between the two magnetization coils in the same group, for the sake of compact structure, one group of magnetization coils is nested inside the other group of magnetization coils, and the magnetic field directions generated by the two groups of magnetization coils are different. For example, as Figure 7 shown, the magnetic field directions generated by the two groups of magnetization coils are perpendicular.

[0062] The watch holder 40 is directly or indirectly mounted on one of the mounting shafts 111 and is located between two sets of magnetization coils, so that the watch placed on the watch holder 40 is in the magnetic field generated by the two sets of magnetization coils. For example, the watch holder 40 is mounted on one of the mounting shafts 111 through a bracket or a connecting member. During the anti-magnetic performance detection process, the two sets of magnetization coils can be rotated respectively to adjust the magnetic field direction, so as to realize the anti-magnetic detection in multiple directions of the watch. In addition, the watch holder 40 is fixedly mounted or rotatably mounted on one of the mounting shafts 111. When the watch holder 40 is rotatably mounted on one of the mounting shafts 111, during the anti-magnetic performance detection process, not only can the magnetic field direction be adjusted and changed by rotating the two sets of magnetization coils, but also the direction of the watch relative to the magnetic field can be adjusted and changed by rotating the watch holder 40, so as to meet the anti-magnetic performance detection of the watch in different directions. In addition, the watch anti-magnetic performance detector also includes the control device, the position sensor, and the magnetic field intensity sensor described in the foregoing embodiments.

[0063] In addition, in another embodiment of the present application, the above Figure 7 two sets of magnetization coils are replaced with two Helmholtz coils and are arranged on the base 10 in the same matching manner. In other words, in this case, the watch anti-magnetic performance detector includes the base 10, two Helmholtz coils, and the watch holder 40. The watch placed on the watch holder 40 is simultaneously in the magnetic fields generated by the two Helmholtz coils. At least one of the Helmholtz coils is rotatably mounted on the base 10 to generate magnetic fields in multiple different directions. In this way, at least three different directions of magnetic fields can be generated in total.

[0064] Optionally, similar to the magnetization coils in Figure 7 , the two Helmholtz coils are vertically arranged to form magnetic fields in two directions. The two Helmholtz coils are respectively correspondingly and rotatably mounted on two mounting shafts 111, and one of the Helmholtz coils is nested in the other Helmholtz coil.

[0065] In the fourth embodiment of the present application, please refer to Figure 8 , the watch anti-magnetic performance detector includes the base 10, the magnetic core 20, the coil 30, the watch holder 40, and the coil mounting bracket 80. The base 10 is a supporting flat plate, and the number of the magnetic cores 20 and the coils 30 is three pairs. Each magnetic core 20 is wound with a coil 30 on its outer periphery. Two of the three pairs of magnetic cores 20 are on the same mounting surface, and the mounting surface of the other pair of magnetic cores 20 is perpendicular to the common mounting surface of the two pairs of magnetic cores 20. The magnetic field directions formed by the two pairs of magnetic cores 20 on the same mounting surface are different, so that the three pairs of magnetic cores 20 generate magnetic fields in three different directions.

[0066] The coil mounting bracket 80 is a closed structure and has two annular mounting portions 81. In Figure 8In order to facilitate the display of the internal structure, only two annular mounting portions 81 of the coil mounting bracket 80 are schematically shown. Among them, the two pairs of magnetic cores 20 on the same mounting surface are evenly spaced and mounted on the inner side of one of the annular mounting portions 81, and the two magnetic cores 20 of the same pair are arranged opposite to each other at intervals. The other pair of magnetic cores 20 are mounted opposite to each other at intervals on the inner side of the other annular mounting portion 81, and the two magnetic cores 20 are respectively located on both sides of the annular mounting portion 81 where the two pairs of magnetic cores 20 are mounted. Moreover, the annular mounting portion 81 on which only one pair of magnetic cores 20 is mounted includes a first half-ring section 811 and a second half-ring section 812 that are relatively spaced apart. One of the pair of magnetic cores 20 is mounted on the first half-ring section 811, and the other of the pair of magnetic cores 20 is mounted on the second half-ring section 812; that is to say, the annular mounting portion 81 is actually composed of two relatively spaced half-ring sections, and the two mounted magnetic cores 20 are respectively located on the two half-ring sections. The watch base 40 is fixedly connected to the second half-ring section 812 through a connecting piece.

[0067] Optionally, the first half-ring section 811 and the annular mounting portion 81 on which the two pairs of magnetic cores 20 are mounted are joined as one body.

[0068] The base 10 vertically extends a support portion 11, and the support portion 11 is provided with a telescopic mounting shaft 111. The second half-ring section 812 is telescopically mounted on the base 10 through the mounting shaft 111. As Figure 8 shown, there is a predetermined spacing distance between the second half-ring section 812 and the first half-ring section 811, and there is also a predetermined distance between the second half-ring section 812 and the annular mounting portion 81 on which the two pairs of magnetic cores 20 are mounted. By operating the telescopic movement of the mounting shaft 111, the mounting shaft 111 drives the magnetic cores 20, the coil 30, and the watch base 40 connected to the second half-ring section 812 to axially telescopically move along the mounting shaft 111.

[0069] Before the anti-magnetic performance detection, first place the watch on the watch stand 40, and then operate the mounting shaft 111 to drive the second half-ring section 812 to move towards the first half-ring section 811, so that the watch on the watch stand 40 is in the middle position of the three pairs of magnetic cores 20, that is, the watch is simultaneously in magnetic fields in three different directions, and then the anti-magnetic performance detection can be carried out. After the detection is completed, operate the mounting shaft 111 to drive the second half-ring section 812 to move away from the first half-ring section 811, so that the watch stand 40 and the watch withdraw from the middle position of the three magnetic cores 20, thus facilitating the removal of the watch from the watch stand 40. It can be understood that since the watch anti-magnetic performance detector includes three pairs of magnetic cores 20, the watch stand 40 and the watch need to be in the position between the three pairs of magnetic cores 20 during the detection, and the three pairs of magnetic cores 20 are relatively crowded in spatial distribution, which is not convenient for the placement and removal of the watch. Therefore, a telescopic mounting shaft 111 is designed, and the magnetic cores 20, coils 30 and the watch stand 40 connected to the second half-ring section 812 are driven by the mounting shaft 111 to move, so as to realize the placement and removal of the watch and the detection of the anti-magnetic performance of the watch. Moreover, when the number of coils 30 and magnetic cores 20 reaches three pairs, magnetic fields in three different directions can be generated. At this time, it is not necessary to rotate any of the magnetic cores 20 and coils 30, nor to rotate the azimuth of the watch stand 40 and the watch, and the anti-magnetic performance detection can be satisfied in three different directions of the watch. In addition, the watch anti-magnetic performance detector also includes a control device, a position sensor and a magnetic field intensity sensor as described in the foregoing embodiments.

[0070] Further, a microphone and / or an electromagnetic induction signal sensor are provided on the watch stand 40. During the detection, the microphone and / or the electromagnetic induction signal sensor are electrically connected to the signal processing unit. The microphone picks up the watch sound signal of the watch under test. The sensor in the microphone converts the watch sound signal into an electrical signal and then transmits it through a wire from the coil mounting bracket 80 and connects it to the signal processing unit, and the running time information of the mechanical watch can be obtained. In order to avoid being affected by the magnetic field, the microphone is made of non-ferromagnetic material. Similarly, the electromagnetic induction signal sensor contains a measuring coil or other test elements. The electromagnetic induction signal sensor picks up the magnetic flux change signal generated by the stepping motor of the watch under test such as a quartz watch. The electromagnetic induction signal sensor converts the magnetic flux change signal into an electrical signal and then transmits it through a wire from the coil mounting bracket 80 and connects it to the signal processing unit, and the running time information of the watch under test can be obtained. The microphone and the electromagnetic induction signal sensor can be installed on the watch stand 40 at the same time to be applicable to different watches under test. It is worth mentioning that the microphone and / or the electromagnetic induction signal sensor are also applicable to the foregoing embodiments.

[0071] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A watch anti-magnetic performance tester, characterized in that: include: Control devices; Base; at least one electromagnet or two Helmholtz coils, wherein the electromagnet is formed by combining a magnetic core and a coil; A watch stand, the watch stand is used to place a watch; the watch stand is provided with a microphone; When the coil and the magnetic core are combined to form an electromagnet, the watch seat is arranged between the two poles of the magnetic core, and the electromagnet and the watch seat formed can be rotatably mounted on the base to generate a plurality of magnetic fields in different directions; wherein the magnetic core is U-shaped and has two poles, and the coil is wound around the outer periphery of the magnetic core; The watch anti-magnetic performance tester comprises a first rotating shaft, a watch frame and a coil support frame, the number of the magnetic core and the number of the coil are both one, the first rotating shaft is erected on the base, one end of the watch frame is rotatably connected to the first rotating shaft, one end of the coil support frame is rotatably connected to the first rotating shaft, the other end of the coil support frame supports the coil and the magnetic core, and the coil and the magnetic core can both be operably rotated relative to the coil support frame, so that the magnetic core is converted between a horizontal state and a vertical state, and the watch seat is connected to the other end of the watch frame and is located between the two poles of the magnetic core; or, When there are multiple coils and multiple magnetic cores and they are combined to form multiple electromagnets, the watch stand is arranged between the multiple magnetic cores, and the multiple electromagnets are distributed in different directions to generate multiple magnetic fields in different directions; the watch placed on the watch stand is in the magnetic field of any direction formed by the electromagnets; wherein the number of the magnetic cores and the coils are both two pairs, each pair of the magnetic cores is spaced oppositely and has opposite magnetic poles, the outer circumference of each magnetic core is wound with the coil to form a magnetic field in one direction between each pair of the magnetic cores, and the two pairs of the magnetic cores are rotatably installed on the same plane; Alternatively, the number of the magnetic cores and the coils are both two pairs, each of the magnetic cores and one of the coils is combined to form an annular magnetizing coil, and the four magnetizing coils are grouped in pairs, and the two magnetizing coils in the same group are arranged relatively spaced apart and have opposite magnetic poles to form a magnetic field in one direction; mounting shafts are respectively provided on opposite sides of the base, and the two magnetizing coils in the same group are connected as a whole, and the two groups of magnetizing coils are respectively and rotatably mounted on the two mounting shafts, and one group of magnetizing coils is nested inside the other group of magnetizing coils; Alternatively, the number of the magnetic cores and the coils are three pairs, each pair of the magnetic cores are spaced opposite to each other and have opposite magnetic poles, the coil is wound around the outer circumference of each magnetic core to form a magnetic field in one direction between each pair of the magnetic cores, two pairs of the magnetic cores are on the same mounting surface, and the mounting surface of the other pair of the magnetic cores is perpendicular to the common mounting surface of the two pairs of magnetic cores; The watch anti-magnetic performance tester comprises a coil mounting frame, the coil mounting frame has two annular mounting parts, the two pairs of magnetic cores on the same mounting surface are installed at intervals on the inner side of one of the annular mounting parts, and the other pair of magnetic cores are installed at intervals on the inner side of the other annular mounting part opposite to each other; Alternatively, the watch is in the magnetic fields generated by the two Helmholtz coils, at least one of the Helmholtz coils being rotatably mounted on the base to generate magnetic fields in multiple different directions; the two Helmholtz coils are vertically arranged to form magnetic fields in two directions; the two Helmholtz coils are respectively and rotatably mounted on two mounting shafts, and one of the Helmholtz coils is nested within the other Helmholtz coil.

2. The anti-magnetic performance tester for watches as claimed in claim 1, characterized in that: The coil support frame is L-shaped; and / or, the watch frame is in a "匚" shape.

3. The watch anti-magnetic performance tester according to claim 1, characterized in that: The watch anti-magnetic performance detector includes a coil mounting frame having a mounting space, and the magnetic core and the coil are both mounted within the coil mounting frame, and the coil mounting frame is rotatably connected to the coil support frame.

4. The watch anti-magnetic performance tester as claimed in claim 3, characterized in that: The watch anti-magnetic performance detector includes a second rotating shaft, and the top end of the coil support frame is rotatably connected to one side of the coil mounting frame through the second rotating shaft.

5. The watch anti-magnetic performance tester according to claim 1, characterized in that: When the number of both the magnetic core and the coil is two pairs and the two pairs of magnetic cores are rotatably mounted in the same plane, the watch anti-magnetic performance detector includes a coil mounting frame, and the two pairs of magnetic cores are respectively mounted on the coil mounting frame, and the coil mounting frame is rotatably mounted on the base.

6. The watch anti-magnetic performance tester according to claim 5, characterized in that: The coil mounting frame is annular, all the magnetic cores are distributed on the inner side of the coil mounting frame, and the watch seat is located at the center of the coil mounting frame.

7. The watch anti-magnetic performance tester according to claim 1, characterized in that: The annular mounting portion with only one pair of the magnetic cores includes a first half-ring section and a second half-ring section which are relatively spaced apart, one of the magnetic cores being mounted on the first half-ring section and the other magnetic core being mounted on the second half-ring section, the watch seat being fixedly connected to the second half-ring section, and the second half-ring section being telescopically mounted on the base through a mounting shaft.

8. The watch anti-magnetic performance tester according to any one of claims 1 to 7, characterized in that: The control device includes an adjustment unit which is electrically connected to the coil and adjusts the current intensity flowing into the coil to generate a magnetic field of a predetermined intensity.

9. The watch anti-magnetic performance tester according to any one of claims 1 to 7, characterized in that: During detection, the microphone is electrically connected to the signal processing unit; and / or, an electromagnetic induction signal sensor is provided on the watch seat, and during detection, the electromagnetic induction signal sensor is electrically connected to the signal processing unit.

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