Magnetic axis key structure

Abstract

The utility model relates to the technical field of switches, and discloses a magnetic shaft key structure, which comprises a shaft core, a PCB (Printed Circuit Board), a magnetic piece and a magnetic sensing element, the magnetic sensing element is arranged on the PCB, a groove body is formed in the side, close to the magnetic sensing element, of the PCB, the magnetic part is arranged on the shaft core, and when the shaft core is pressed downwards, the magnetic part is arranged in the groove body in a penetrating mode through the magnetic sensing element, so that at least part of the magnetic part right faces the magnetic sensing element in the moving process. The magnetic part can be close to the upper surface of the magnetic sensing element, at least part of the magnetic part can directly face the side face of the magnetic sensing element at a close distance in the downward pressing process, and therefore the distance between the magnetic part and the magnetic sensing element is effectively shortened, by arranging the groove body, the moving space of the magnetic part can be larger, and when the shaft core is downwards pressed to the bottom, the magnetic sensing element is not prone to falling off. And the area of the magnetic part passing through the side surface of the magnetic sensing element is larger. Therefore, the magnetic axis key structure is more sensitive and quicker in response and better in linearity, so that the use experience of a user is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switches, and in particular relates to a magnetic axis key structure. Background Art

[0002] The key structure has the advantages of high stability, long service life, high safety, etc. Since the existing key structure with mechanical axis as the main body has the phenomenon of wear and reduced sensitivity after use, a key structure with magnetic axis as the main body is developed.

[0003] In the current button structure with magnetic axis as the main body on the market, the magnet is installed on the axis core, and the magnetic sensor is installed on the PCB (Printed Circuit Board). The axis core moves to drive the magnet close to or away from the upper surface of the magnetic sensor to switch the signal. However, because there is a certain distance between the magnet and the magnetic sensor, the magnetic axis button structure has low sensitivity, slow speed and poor linearity when responding. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a magnetic axis key structure.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] A magnetic axis key structure, comprising: an axis core, a PCB board, a magnetic part and a magnetic sensor element;

[0007] The magnetic sensor element is arranged on the PCB board, and a groove is opened on one side of the PCB board close to the magnetic sensor element. The magnetic component is arranged on the shaft core. When the shaft core is pressed down, the magnetic component passes through the magnetic sensor element and is inserted into the groove, so that the magnetic component is at least partially arranged opposite to the magnetic sensor element during movement.

[0008] In some embodiments, the slot body passes through two sides of the PCB board, and the magnetic member is movably arranged through the slot body.

[0009] In some embodiments, the magnetic member is normally disposed opposite to the magnetic sensor element; and / or

[0010] When the shaft core is pressed down to the bottom, the magnetic component is arranged opposite to the magnetic sensor element portion.

[0011] In some embodiments, the shaft core includes a main body end and a guide sliding end, and the magnetic member is mounted on the main body end.

[0012] In some embodiments, a mounting structure is provided on one side of the main body end, and the magnetic member is mounted in the mounting structure.

[0013] In some embodiments, the mounting structure partially exposes the magnetic component.

[0014] In some embodiments, the shaft core includes a main body end and a guide sliding end, and the magnetic member is mounted on the guide sliding end.

[0015] In some embodiments, it also includes an upper cover, a base and a reset elastic member, the upper cover is connected to the base to form a accommodating cavity, the reset elastic member is installed in the accommodating cavity, one end of the shaft core is arranged in the accommodating cavity, and the other end of the shaft core protrudes out of the upper cover under the abutment action of the reset elastic member, and the PCB board is connected to the base.

[0016] In some embodiments, a through hole is formed on the PCB board, and a bearing column is provided on the base protruding downward to match the through hole, the bearing column is passed through the through hole, and a bottom groove for accommodating the shaft core is provided inside the bearing column;

[0017] The shaft core is provided with an abutment portion, and the bottom of the bottom groove is provided with a sounding platform matched with the abutment portion, so that when the shaft core is pressed down to the bottom, the abutment portion abuts against the sounding platform to produce sound;

[0018] A positioning ring is provided at the bottom of the bottom groove, and the sounding platform is arranged in the positioning ring. An oil storage groove is formed between the positioning ring and the sounding platform for storing excess lubricating oil between the shaft core and the positioning ring.

[0019] In some embodiments, the magnetic sensor element is configured as a TMR sensor, an AMR sensor, a GMR sensor or a Hall element.

[0020] In summary, the utility model has at least the following benefits:

[0021] Compared with the traditional magnetic axis key structure that only drives the magnetic part close to the upper surface of the magnetic sensor element by pressing down the shaft core to generate induction and switch the signal, the magnetic axis key structure provided by the utility model provides a slot body adjacent to the magnetic sensor element on the PCB board, so that the magnetic part can not only approach the upper surface of the magnetic sensor element during operation, but at least part of the magnetic part can also be arranged in close proximity to the side of the magnetic sensor element during the pressing process, thereby effectively shortening the distance between the magnetic part and the magnetic sensor element, wherein, by providing the slot body, the movable space of the magnetic part is larger, and when the shaft core is pressed down to the bottom, the range of the magnetic part passing the side of the magnetic sensor element is larger. The magnetic axis key structure is made to be more sensitive, faster, and more linear, thereby effectively increasing the user experience. The problem of weak signal transmission in the traditional magnetic axis key structure is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the magnetic axis key structure of the present application;

[0023] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the magnetic axis key structure of the present application in a normal state;

[0024] Figure 3 It is a schematic cross-sectional view of the embodiment of the magnetic axis key structure of the present application when the axis core is pressed to the bottom;

[0025] Figure 4 This is a schematic diagram of the exploded structure of an embodiment of the magnetic axis key structure of the present application;

[0026] Figure 5 It is a partial cross-sectional structural schematic diagram of an embodiment of the magnetic axis key structure of the present application;

[0027] Figure 6 It is a partial structural schematic diagram of an embodiment of the magnetic axis key structure of the present application.

[0028] Markings in the figure:

[0029] 10. Magnetic axis button structure; 100. Base; 110. Accommodating cavity; 120. Bearing column; 121. Bottom groove; 122. Sounding platform; 123. Oil accumulation groove; 124. Positioning ring; 130. Main guide part; 200. Upper cover; 300. Shaft core; 310. Guide sliding end; 311. Abutment part; 320. Main body end; 321. Card block; 322. Accommodating groove; 330. Auxiliary guide part; 400. PCB board; 410. Slot body; 420. Perforation; 500. Reset elastic member; 600. Magnetic member; 700. Magnetic sensor element; 800. Middle plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] In the following embodiments, reference is made to Figures 1 to 3The coordinate system is such that the direction indicated by the Z-axis arrow is upward and the direction indicated by the X-axis arrow is right.

[0033] Embodiment 1:

[0034] like Figures 1 to 6 As shown, in this embodiment, a magnetic axis button structure 10 includes: an axis core 300, a PCB board 400, a magnetic component 600 and a magnetic sensor element 700; the magnetic sensor element 700 is arranged on the PCB board 400, and a groove body 410 is opened on the side of the PCB board 400 close to the magnetic sensor element 700, and the magnetic component 600 is arranged on the axis core 300. When the axis core 300 is pressed down, the magnetic component 600 passes through the magnetic sensor element 700 and is inserted into the groove body 410, so that the magnetic component 600 is at least partially opposite to the magnetic sensor element 700 during the movement.

[0035] Specifically, the magnetic sensor element 700 is mounted on the upper surface of the PCB board 400, and a slot body 410 is provided on the upper surface of the PCB board 400, and the slot body 410 and the magnetic sensor element 700 are arranged adjacent to each other, and both are arranged on the right side of the PCB board 400. It can be understood that the magnetic sensor element 700 can also be installed in the slot body 410, the lower surface of the PCB board 400, or the side of the PCB board 400 according to actual production needs. The magnetic member 600 is mounted on the right side of the shaft core 300, and the magnetic member 600 is arranged corresponding to the slot body 410, so that the magnetic member 600 can approach or move away from the slot body 410 as the shaft core 300 rises and falls. In this way, when the shaft core 300 is pressed down, the shaft core 300 approaches the PCB board 400, and the magnetic component 600 installed on the shaft core 300 also approaches the groove body 410 until the magnetic component 600 passes through the magnetic sensor element 700 and is installed in the groove body 410. At this time, the magnetic component 600 is at least partially arranged opposite to the magnetic sensor element 700.

[0036] It is worth noting that, compared with the traditional magnetic axis key structure 10 that only drives the magnetic part 600 to approach the upper surface of the magnetic sensor element 700 by pressing the shaft core 300 downward to generate induction and switch the signal, the present application provides a slot body 410 adjacent to the magnetic sensor element 700 on the PCB board 400, so that the magnetic part 600 can not only approach the upper surface of the magnetic sensor element 700 during operation, but at least part of the magnetic part 600 can also be arranged in close proximity to the side of the magnetic sensor element 700 during the pressing process, thereby effectively shortening the distance between the magnetic part 600 and the magnetic sensor element 700, wherein, by providing the slot body, the activity space of the magnetic part 600 can be larger, and when the shaft core 300 is pressed to the bottom, the area of ​​the magnetic part 600 passing through the side of the magnetic sensor element 700 is larger. The magnetic axis key structure 10 is made to respond more sensitively, faster, and with better linearity, thereby effectively increasing the user's experience. The problem of weak signal transmission of the traditional magnetic axis key structure 10 is solved.

[0037] Example 2

[0038] This embodiment is a further embodiment of Embodiment 1. In this embodiment, the magnetic axis button structure 10 also includes an upper cover 200, a base 100 and a reset elastic member 500. The upper cover 200 is connected to the base 100 to form a accommodating cavity 110. The reset elastic member 500 is installed in the accommodating cavity 110. One end of the shaft core 300 is arranged in the accommodating cavity 110, and the other end of the shaft core 300 protrudes out of the upper cover 200 under the abutment of the reset elastic member 500. The PCB board 400 is connected to the base 100.

[0039] Specifically, the bottom end of the upper cover 200 is engaged with the top end of the base 100, a pressing hole is provided on the top surface of the upper cover 200, the shaft core 300 includes a main body end 320 and a guide sliding end 310, the top end of the main body end 320 is provided on the upper cover 200, and the bottom end is provided in the accommodating cavity 110 through the pressing hole, the resetting elastic member 500 is sleeved on the guide sliding end 310, and the top end of the resetting elastic member 500 is abutted against and provided on the main body end 320, and the bottom end of the resetting elastic member 500 is connected to the side wall of the accommodating cavity 110, wherein the resetting elastic member 500 is provided as a spring. The upper surface of the PCB board 400 is welded with a magnetic sensor element 700, and two through holes are provided on the PCB board 400, and two protrusions are provided on the outer surface of the bottom end of the base 100, and each protrusion is inserted in a through hole to complete the installation of the PCB board 400 and the base 100. The magnetic sensor element 700 is provided corresponding to the magnetic member 600.

[0040] Example 3

[0041] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, this embodiment is a further implementation of embodiment 1 or 2. In this embodiment, the slot body 410 passes through two sides of the PCB board 400, and the magnetic member 600 is movably arranged through the slot body 410.

[0042] Specifically, the groove 410 passes through the upper and lower surfaces of the PCB, so that the magnetic member 600 can be set through the PCB board 400. In this way, the magnetic member 600 can pass through the PCB board 400 during operation, so that the movable path of the magnetic member 600 is longer, and the range of the magnetic member 600 passing through the side of the magnetic sensor element 700 can be maximized, and the magnetic member 600 is further close to the magnetic sensor element 700. Thereby, the response speed of the magnetic axis key structure 10 is further improved and the linearity is enhanced.

[0043] To enhance the user experience, in some embodiments, the magnetic member 600 is normally disposed opposite to a portion of the magnetic sensor element 700; and / or when the shaft core 300 is pressed down to the bottom, the magnetic member 600 is disposed opposite to a portion of the magnetic sensor element 700.

[0044] Specifically, the specific arrangement of the magnetic member 600 and the magnetic sensor element 700 is set according to actual production requirements:

[0045] refer to Figure 2 In one embodiment, the magnetic member 600 and the magnetic sensor element 700 are arranged to face each other in a normal state. In this way, before the magnetic axis key structure 10 is pressed, the magnetic member 600 is close to the side of the magnetic sensor element 700. In this way, when the magnetic member 600 changes its displacement and moves downward, the magnetic sensor element 700 can be sensed quickly, thereby further improving the reaction sensitivity of the magnetic axis key structure 10.

[0046] refer to Figure 3 In another embodiment, when the shaft core 300 is pressed down to the bottom, the magnetic member 600 is arranged opposite to a part of the magnetic sensor element 700. In this way, when the shaft core 300 is pressed down to the bottom for pre-reset, the magnetic member 600 is arranged opposite to a side part of the magnetic sensor element 700, thereby improving the sensing effect of the magnetic sensor element 700.

[0047] In another embodiment, the magnetic member 600 is normally arranged opposite to a part of the magnetic sensor element 700; when the shaft core 300 is pressed down to the bottom, the magnetic member 600 is arranged opposite to a part of the magnetic sensor element 700. In this way, during the entire operation of the magnetic member 600, the magnetic sensor element 700 is arranged opposite to at least a part of the magnetic member 600, that is, the magnetic sensor element 700 is always located within the range of the magnetic member 600, so that the sensitivity and linearity are optimized. For example, referring to Figure 2 and Figure 3 Under normal conditions, the lower surface of the magnetic member 600 is flush with the lower surface of the magnetic sensor element 700. When the shaft core 300 is pressed to the bottom, the upper surface of the magnetic member 600 is flush with the upper surface of the magnetic sensor element 700. It is understandable that the actual arrangement can also be other ways, and it is only necessary to keep the magnetic member 600 always facing the magnetic sensor element 700 part during operation. The arrangement method is known to those skilled in the art and is achievable, and is not described in detail in this embodiment.

[0048] In order to facilitate the installation of the magnetic member 600, as Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, the shaft core 300 includes a main body end 320 and a guide sliding end 310 , and the magnetic member 600 is mounted on the main body end 320 .

[0049] Specifically, the main body end 320 is used for pressing by the user, and the guide sliding end 310 is used to cooperate with the base 100 to guide and limit the path when pressing. The magnetic member 600 is installed on the main body end 320 to facilitate the magnetic member 600 to pass through the slot 410.

[0050] In order to facilitate the specific installation of the magnetic member 600, as shown in FIG. Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, a mounting structure is provided on one side of the main body end 320, and the magnetic member 600 is installed in the mounting structure.

[0051] Specifically, a mounting structure is disposed on one side of the main body end 320 close to the magnetic sensor element 700 , that is, a mounting structure is disposed on the right side of the main body end 320 , so that the magnetic member 600 can be fixed on the main body end 320 .

[0052] In order to facilitate the induction between the magnetic member 600 and the magnetic sensor element 700, in some embodiments, the mounting structure partially exposes the magnetic member 600.

[0053] Specifically, the installation structure is set according to actual production requirements:

[0054] refer to Figure 2 , Figure 3 and Figure 5 In one embodiment, the mounting structure is provided as a clamping block 321, and a receiving groove 322 is provided on the lower surface of the clamping block 321, and the magnetic member 600 is clamped in the receiving groove 322. In this way, the clamping block 321 is provided on the right side of the main body end 320, and the magnetic member 600 is optionally but not limited to being embedded in the receiving groove 322, and the magnetic member 600 is provided protruding from the receiving groove 322. Thus, the magnetic member 600 can be installed upward from the bottom of the slot body 410 into the receiving groove 322, and can be magnetized before the magnetic axis key structure 10 is assembled, or it can be magnetized after the assembly is completed, which facilitates the installation of the magnetic member 600 while ensuring the signal transmission effect.

[0055] Furthermore, a sensing groove is provided on one side of the receiving groove 322 close to the magnetic sensor element 700, so as to achieve a better sensing effect. That is, a sensing groove is provided on the right side of the receiving groove 322 to further enhance the sensing effect.

[0056] Furthermore, convex ribs are provided on the inner surface of the receiving groove 322 for fastening the magnetic member 600. In this way, the shaft core 300 fastens the magnetic member 600 through the convex ribs, and the fastening effect of the convex ribs effectively prevents the magnetic member 600 from easily detaching from the shaft core 300.

[0057] It is understandable that the magnetic component 600 can also be installed on the clamping block 321 according to actual production requirements. For example, the magnetic component 600 can be installed on the top of the clamping block 321; for another example, the magnetic component 600 can be installed on the side of the clamping block 321, such as the right side.

[0058] In another embodiment, the mounting structure is configured as a concave clamp, and the concave clamp is engaged and fixed to the magnetic member 600 .

[0059] In the above embodiment, the method of fixing the magnetic member 600 in the installation structure is not limited to the method of tight fitting, and can also be installed on the shaft core 300 by other methods such as riveting or gluing.

[0060] Example 4

[0061] This embodiment is similar to the solution in Embodiment 3 combined with Embodiment 2, except that, in this embodiment, the shaft core 300 includes a main body end 320 and a guide sliding end 310 , and the magnetic member 600 is mounted on the guide sliding end 310 .

[0062] Specifically, a mounting structure is provided on the lower surface of the guide sliding end 310. In another embodiment, the mounting structure may be provided on the side of the guide sliding end 310. The mounting structure may be selected but not limited to a positioning groove, and may also be provided as a fastening type clamp. The magnetic member 600 is installed in the positioning groove. A bottom hole is provided on the base 100, and the bottom hole is provided corresponding to the slot body 410 so that the component can pass through the bottom hole to reach the slot body 410. When the shaft core 300 is pressed down, the guide sliding end 310 is pressed down accordingly, and the magnetic member 600 can be provided through the bottom hole and the slot body 410.

[0063] The relationship between the guide sliding end 310 and the bottom hole is set according to actual production requirements:

[0064] In one embodiment, the width of the guide sliding end 310 is smaller than the width of the bottom hole. When the shaft core 300 is pressed down, the guide sliding end 310 is sequentially inserted into the bottom hole and the slot body 410. The length of the magnetic member 600 may be greater than the depth of the positioning slot, equal to the depth of the positioning slot, or less than the depth of the positioning slot.

[0065] In another embodiment, the width of the guide sliding end 310 is equal to or greater than the width of the bottom hole, and when the shaft core 300 is pressed down, the magnetic member 600 is inserted through the bottom hole and the slot body 410. The length of the magnetic member 600 is greater than the depth of the positioning slot, that is, the magnetic member 600 protrudes from the positioning slot so as to pass through the bottom hole alone to reach the slot body 410.

[0066] Example 5

[0067] This embodiment is a further implementation of embodiment 1, 2 or 3. Figures 2 to 6As shown, in this embodiment, a through hole 420 is opened on the PCB board 400, and the base 100 protrudes downward and is provided with a supporting column 120 that cooperates with the through hole 420. The supporting column 120 is set through the through hole 420, and the supporting column 120 has a bottom groove 121 for accommodating the shaft core 300.

[0068] Specifically, a through hole 420 is provided in the middle of the PCB board 400, and a bearing column 120 is provided at the bottom center of the base 100 protruding downward. The cross-sectional shape of the bearing column 120 is set to be circular, and the shape of the through hole 420 is adapted to the shape of the bearing column 120. The bottom end of the bearing column 120 is set through the through hole 420, and the bottom groove 121 is used to position and install the reset elastic member 500. The guide sliding end 310 is a column, and the bottom groove 121 can be used to accommodate the guide sliding end 310 to facilitate the up and down sliding of the shaft core 300. In this way, by providing the bearing column 120, the pressing stroke of the shaft core 300 can be effectively guaranteed, that is, while ensuring that the feedback sense of the magnetic axis key structure 10 is roughly the same as that of the conventional magnetic axis key structure 10, the overall volume of the magnetic axis key structure 10 is shortened, which is convenient for carrying. In this way, the practicality of the magnetic axis key structure 10 is effectively increased.

[0069] In some embodiments, a chamfer is disposed on the top sidewall of the bottom groove 121 .

[0070] Specifically, by providing a chamfer on the top side wall of the bottom groove 121 , it is convenient to insert the bottom end of the resetting elastic member 500 into the bottom groove 121 .

[0071] In order to ensure the feedback feeling of the magnetic axis key structure 10 when pressed, Figure 2 and Figure 3 As shown, in some embodiments, an abutment portion 311 is provided on the shaft core 300, and a sounding platform 122 matching the abutment portion 311 is provided at the bottom of the bottom groove 121, so that when the shaft core 300 is pressed down and slides downward, the abutment portion 311 abuts against the sounding platform 122 to produce sound.

[0072] Specifically, the shaft core 300 is provided with an abutting portion 311 on the column, and the abutting portion 311 is provided to protrude downward, and the bottom of the bottom groove 121 is provided with a sounding platform 122 protruding upward, and the sounding platform 122 is provided corresponding to the abutting portion 311. When the shaft core 300 slides downward to the bottom, the abutting portion 311 collides with the sounding platform 122 to make a sound, and at this time, a crisp sound can be made, which effectively increases the user feedback and increases the practicality of the magnetic axis key structure 10.

[0073] In some embodiments, a chamfer is provided on the abutting portion 311 .

[0074] Specifically, by providing a chamfer at the bottom end of the abutting portion 311 , the contact area between the abutting portion 311 and the sounding platform 122 is made smaller, and the sound generated when the abutting portion 311 abuts against the sounding platform 122 is clearer.

[0075] In some embodiments, the shape of the sounding platform 122 can be a truncated cone. It can be understood that the shape of the sounding platform 122 can be set according to actual production requirements. For example, the shape of the sounding platform 122 can be cylindrical, square or conical.

[0076] It is understandable that in order to ensure smooth pressing movement of the shaft body, lubricating oil is added inside the shaft body. If the lubricating oil is not well controlled and too much oil is added, the lubricating oil will flow under the base 100. In this way, when the shaft core 300 is pressed to the bottom, there is lubricating oil between the bottom of the guide sliding end 310 and the base 100. Because the lubricating oil has a certain viscosity, when pressing, it will cause the pressing feel to be unclear. In order to avoid this situation, Figure 2 and Figure 3 As shown, in some embodiments, a positioning ring 124 is provided at the bottom of the bottom groove 121, and the sounding platform 122 is provided in the positioning ring 124, and an oil storage groove 123 for storing excess lubricating oil between the shaft core 300 and the positioning ring 124 is formed between the positioning ring 124 and the sounding platform 122.

[0077] Specifically, a positioning ring 124 is protruding from the bottom of the bottom groove 121. The positioning ring 124 is used to position and install the bottom end of the reset elastic member 500, and the guide sliding end 310 slides on the inner side of the positioning ring 124 to limit the sliding direction of the shaft core 300. An oil accumulation groove 123 is formed between the positioning ring 124 and the sounding platform 122. By accumulating excess lubricating oil in the oil accumulation groove 123, it is possible to prevent the lubricating oil from flowing between the shaft core 300 and the base 100, so as to prevent the sound from being unclear when the shaft body is pressed. That is, the lubricating oil can be accumulated in the oil accumulation groove 123, so as to prevent the lubricating oil from being present between the abutting portion 311 and the sounding platform 122.

[0078] In some embodiments, the cross-sectional area of ​​the top end of the positioning ring 124 is smaller than the cross-sectional area of ​​the bottom end.

[0079] Specifically, by setting the cross-sectional area of ​​the top end of the positioning ring 124 to be smaller, it is convenient for the bottom end of the resetting elastic member 500 to be sleeved on the positioning ring 124 .

[0080] In order to facilitate the sliding of the shaft core 300, as Figure 4 and Figure 5 As shown, in some embodiments, a main guide portion 130 is disposed on the base 100, and a secondary guide portion 330 cooperating with the main guide portion 130 is disposed on the shaft core 300. The main guide portion 130 cooperates with the secondary guide portion 330 to guide the shaft core 300 to slide in a directional manner.

[0081] Specifically, main guide parts 130 are provided on both sides of the base 100, and auxiliary guide parts 330 are provided on both sides of the main body end 320. Through the guiding cooperation of the main guide parts 130 and the auxiliary guide parts 330, the sliding direction of the shaft core 300 can be guided, thus facilitating the sliding of the shaft core 300.

[0082] In order to facilitate the guidance of the main guide part 130 and the auxiliary guide part 330, as shown in FIG. Figure 4 As shown, in some embodiments, the main guide portion 130 is configured as a track groove, and the auxiliary guide portion 330 is configured as a guide rail, and the guide rail is slidably connected with the track groove.

[0083] Specifically, the shape of the guide rail is matched with the shape of the track groove. When the shaft core 300 slides, the guide rail slides in the track groove, so that the shaft core 300 is easily guided and limited.

[0084] In another embodiment, the auxiliary guide portion 330 may be configured as a track groove, and the main guide portion 130 may be configured as a guide rail. It is understood that the main guide portion 130 and the auxiliary guide portion 330 may also be configured as other structures known to those skilled in the art that can cooperate to guide the shaft core 300 to slide in a directional manner.

[0085] In order to facilitate the fixed installation of the base 100, as Figure 2 and Figure 3 As shown, in some embodiments, the magnetic axis button structure 10 further includes a middle plate 800 , and the middle plate 800 is snap-connected with the base 100 .

[0086] Specifically, by connecting the inner surface of the middle plate 800 with the outer surface of the base 100 , the bottom can be limited and fixed by the middle plate 800 , thus effectively increasing the practicality of the magnetic axis key structure 10 .

[0087] In any of the above embodiments, the magnetic member 600 may be selected from but not limited to a magnet. The magnetic sensor element 700 may be selected from but not limited to a TMR sensor, an AMR sensor, a GMR sensor and a Hall element.

[0088] The specific configuration of the magnetic sensor element 700 is selected according to actual production requirements:

[0089] For example, the magnetic sensor element 700 is set as a TMR sensor. In this way, the use of TMR (Tunneling Magnetoresistance) sensor has the following advantages: high accuracy, high sensitivity, low power consumption, small size, good temperature stability, and wide operating temperature range.

[0090] For another example, the magnetic sensor element 700 is configured as an AMR (Anisotropic Magnetoresistance) sensor.

[0091] For another example, the magnetic sensor element 700 is configured as a GMR (Giant Magnetoresistance) sensor.

[0092] For another example, the magnetic sensor element 700 is configured as a Hall element.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0095] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0096] In the present utility model, unless otherwise clearly specified and limited, the first feature above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature below, below and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those familiar with the technical field can make many substitutions, modifications and changes based on the above contents. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A magnetic axis key structure, characterized in that: include: A shaft core (300), a PCB board (400), a magnetic component (600) and a magnetic sensor element (700); The magnetic sensor element (700) is arranged on the PCB board (400); a groove body (410) is provided on a side of the PCB board (400) close to the magnetic sensor element (700); the magnetic component (600) is arranged on the shaft core (300); when the shaft core (300) is pressed down, the magnetic component (600) passes through the magnetic sensor element (700) and is inserted into the groove body (410), so that the magnetic component (600) is arranged at least partially opposite to the magnetic sensor element (700) during movement.

2. The magnetic axis key structure according to claim 1, characterized in that: The groove body (410) passes through two sides of the PCB board (400), and the magnetic component (600) is movably arranged to pass through the groove body (410).

3. The magnetic axis key structure according to claim 1, characterized in that: Under normal conditions, the magnetic member (600) and the magnetic sensor element (700) are partially arranged opposite to each other; and / or When the shaft core (300) is pressed down to the bottom, the magnetic component (600) and the magnetic sensor element (700) are partially arranged opposite to each other.

4. The magnetic axis key structure according to claim 1, characterized in that: The shaft core (300) comprises a main body end (320) and a guide sliding end (310), and the magnetic member (600) is mounted on the main body end (320).

5. The magnetic axis key structure according to claim 4, characterized in that: A mounting structure is provided on one side of the main body end (320), and the magnetic member (600) is mounted in the mounting structure.

6. The magnetic axis key structure according to claim 5, characterized in that: The magnetic component (600) is disposed on the outside of the mounting structure portion.

7. The magnetic axis key structure according to claim 1, characterized in that: The shaft core (300) comprises a main body end (320) and a guide sliding end (310), and the magnetic member (600) is mounted on the guide sliding end (310).

8. The magnetic axis key structure according to claim 1, characterized in that: The invention also comprises an upper cover (200), a base (100) and a reset elastic member (500); the upper cover (200) is connected to the base (100) to form a receiving cavity (110); the reset elastic member (500) is installed in the receiving cavity (110); one end of the shaft core (300) is arranged in the receiving cavity (110); and the other end of the shaft core (300) is protruded from the upper cover (200) under the abutment of the reset elastic member (500); and the PCB board (400) is connected to the base (100).

9. The magnetic axis key structure according to claim 8, characterized in that: The PCB board (400) is provided with a through hole (420), the base (100) is protruding downward and provided with a bearing column (120) that matches the through hole (420), the bearing column (120) is arranged through the through hole (420), and the bearing column (120) has a bottom groove (121) for accommodating the shaft core (300); The shaft core (300) is provided with an abutment portion (311), and the bottom of the bottom groove (121) is provided with a sound-generating platform (122) matched with the abutment portion (311), so that when the shaft core (300) is pressed down to the bottom, the abutment portion (311) abuts against the sound-generating platform (122) to generate sound; A positioning ring (124) is provided at the bottom of the bottom groove (121), and the sounding platform (122) is arranged in the positioning ring (124). An oil accumulation groove (123) is formed between the positioning ring (124) and the sounding platform (122) for storing excess lubricating oil between the shaft core (300) and the positioning ring (124).

10. The magnetic axis key structure according to any one of claims 1 to 9, characterized in that: The magnetic sensor element (700) is configured as a TMR sensor, an AMR sensor, a GMR sensor or a Hall element.

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