Magnetic switch with high applicability

Abstract

The utility model relates to a magnetic switch with high applicability, which comprises a shell, a mounting cavity is arranged in the shell, a magnet, a guide seat and a sealing seat are sequentially arranged in the mounting cavity from top to bottom, a glass tube is arranged between the guide seat and the sealing seat, two ends of the glass tube are respectively sealed with the guide seat and the sealing seat, a sealing space is formed in the glass tube, and the sealing space is arranged in the mounting cavity. A main lead, a first auxiliary lead and a second auxiliary lead which penetrate through the sealing seat to enter the sealing space are arranged on the lower side of the shell, a metal connecting piece is further arranged in the sealing space, a connecting assembly which penetrates through the guide seat and is connected with the metal connecting piece is arranged on the lower side of the magnet, and a compression spring is arranged between the magnet and the guide seat. The main lead is provided with a contact piece used for making contact with the left end of the metal connecting piece, the first auxiliary lead is connected with an upper contact end located on the upper side of the right end of the metal connecting piece, the second auxiliary lead is connected with a lower contact end located on the lower side of the right end of the metal connecting piece, the two closed loops can be selectively used according to requirements, and the applicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic switches, in particular to a magnetic switch with high applicability. Background Art

[0002] A magnetic switch is an electronic switch that uses a magnetic field to control the on and off of a circuit. Magnetic switches are also called "passive" switches because they do not require a power source and rely entirely on the presence or absence of a magnetic field to operate. Current magnetic switches are primarily composed of one or more reed switches, which contain a pair of metal reeds. When affected by an external magnetic field, the two metal reeds are attracted together, thereby turning on the circuit. When the magnetic field disappears, the reeds separate, disconnecting the circuit. Due to its structure involving the attraction and separation of two metal reeds, this type of reed switch magnetic induction switch is generally a one-way circuit, which has certain limitations when used. Therefore, in response to the above-mentioned technical problems, this application makes improvements. Utility Model Content

[0003] The utility model provides a magnetic switch with high applicability, which can be selectively used for two closed circuits according to needs, has higher applicability, and solves the above-mentioned problems existing in the use process of the prior art.

[0004] The technical solution of the utility model is achieved as follows: a magnetic switch with high applicability comprises a cylindrical shell, a mounting cavity with an opening facing downwards is opened inside the shell, a magnet, a guide seat and a sealing seat are arranged in sequence from top to bottom in the mounting cavity, the guide seat and the sealing seat are both fixed in the shell, the magnet is movably arranged in the shell, a glass tube is provided between the guide seat and the sealing seat, the upper and lower ends of the glass tube are sealed with the guide seat and the sealing seat respectively, a sealed space is formed inside the glass tube, a main lead, a first auxiliary lead and a second auxiliary lead are provided on the lower side of the shell, which pass through the sealing seat and enter the sealed space, a metal connecting piece is also provided in the sealed space, a connecting assembly is provided on the lower side of the magnet, which passes through the guide seat and is connected to the metal connecting piece, a compression spring is provided between the magnet and the guide seat, a contact piece is provided on the main lead for contacting the left end of the metal connecting piece, the first auxiliary lead is connected to the upper contact end located on the upper side of the right end of the metal connecting piece, and the second auxiliary lead is connected to the lower contact end located on the lower side of the right end of the metal connecting piece.

[0005] Preferably, the connecting component includes a guide rod and a mounting seat, the upper end of the guide rod is fixed to the lower side of the magnet, a guide hole is provided on the guide seat for the guide rod to pass through, the guide rod is fixedly connected to the mounting seat through the guide hole, an assembly port is provided on the lower side of the guide seat, the upper half of the mounting seat is slidably arranged in the assembly port, and the lower half of the mounting seat extends into the sealed space and is fixedly connected to the metal connecting piece.

[0006] Preferably, the guide seat is provided with a limiting groove on the upper side of the assembly opening, and the mounting seat includes a limiting block slidably arranged in the limiting groove, and the limiting groove is used to limit the relative rotation of the limiting block.

[0007] Preferably, a connection port is opened at the lower end of the mounting seat, the middle part of the metal connecting plate is located in the connection port, a gasket is provided on the lower side of the metal connecting plate, a screw is provided on the gasket, and the screw passes through the gasket and the metal connecting plate and is threadedly connected to the mounting seat.

[0008] Preferably, the contact piece includes a connecting piece and a U-shaped piece, the connecting piece is L-shaped and fixedly connected to the main lead, the U-shaped piece is fixedly connected to the connecting piece, and the U-shaped piece includes contact pieces located on the upper and lower sides of the metal connecting piece.

[0009] Preferably, the contact sheet is provided with a bent contact protrusion that arches in an arc shape toward the metal connecting sheet.

[0010] Preferably, a contact protrusion is provided on the right end of the metal connecting piece, and the upper and lower ends of the contact protrusion protrude toward the upper contact end and the lower contact end respectively.

[0011] Preferably, an easy-to-rotate connecting sleeve is integrally formed at the lower end of the shell.

[0012] In summary, the beneficial effects of the present invention are:

[0013] When the outer magnetic block is in contact with the upper end of the magnet, the magnet compresses the compression spring downward to move, thereby causing the metal connecting piece to move downward through the connecting assembly, and the right end of the metal connecting piece contacts the lower contact end of the second secondary lead. Since the left end of the metal connecting piece contacts the contact piece of the main lead, the main lead and the second secondary lead form another closed loop. When the external magnetic block is located at a certain distance, the magnet is pushed but not pushed to the bottom, and the metal connecting piece does not contact the upper contact end or the lower contact end. At this time, the switch is disconnected. The present invention can selectively use the two closed loops according to needs, and has higher applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure when observing from the bottom up;

[0017] Figure 3 It is a bottom view of the utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0019] Figure 5 This is a schematic diagram of the structure of the utility model after removing the shell and glass tube;

[0020] Figure 6 This is a schematic structural diagram of the magnet, guide rod, mounting base and metal connecting piece in the utility model;

[0021] Figure 7 It is a structural schematic diagram of the guide seat in the utility model.

[0022] In the figure: 1. Shell; 11. Mounting cavity; 12. Easy-rotating connecting sleeve; 21. Magnet; 22. Compression spring; 3. Guide seat; 31. Guide hole; 32. Assembly port; 321. Limiting groove; 4. Sealing seat; 5. Glass tube; 51. Sealed space; 61. Main lead; 62. First auxiliary lead; 621. Upper contact end; 63. Second auxiliary lead; 631. Lower contact end; 7. Metal connecting piece; 71. Contact boss; 81. Guide rod; 82. Mounting seat; 821. Limiting block; 822. Connecting port; 83. Gasket; 84. Screw; 91. Connecting piece; 92. U-shaped piece; 921. Contact piece; 922. Bent contact protrusion. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figure 1-7, clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Example:

[0025] like Figures 1 to 7 As shown, the utility model discloses a magnetic switch with high applicability, which includes a cylindrical shell 1, a mounting cavity 11 with an opening facing downwards is opened inside the shell 1, and a magnet 21, a guide seat 3 and a sealing seat 4 are arranged in order from top to bottom in the mounting cavity 11, wherein the guide seat 3 and the sealing seat 4 are fixed in the shell 1, and the magnet 21 is movably arranged in the shell 1, a glass tube 5 is provided between the guide seat 3 and the sealing seat 4, and the upper and lower ends of the glass tube 5 are sealed with the guide seat 3 and the sealing seat 4 respectively, a sealed space 51 is formed inside the glass tube 5, and the sealed space 51 is evacuated or filled with inert gas, and a valve is provided on the lower side of the shell 1 to pass through the sealing seat 4 to enter A main lead 61, a first auxiliary lead 62 and a second auxiliary lead 63 enter the sealed space 51, and a metal connecting piece 7 is also provided in the sealed space 51, and a connecting component is provided on the lower side of the magnet 21, which passes through the guide seat 3 and is connected to the metal connecting piece 7. In addition, a compression spring 22 is provided between the magnet 21 and the guide seat 3, and the compression spring 22 is used to push the magnet 21 upward. In addition, a contact piece for contacting the left end of the metal connecting piece 7 is provided on the main lead 61, and the first auxiliary lead 62 is connected to an upper contact end 621 located on the upper side of the right end of the metal connecting piece 7, and the second auxiliary lead 63 is connected to a lower contact end 631 located on the lower side of the right end of the metal connecting piece 7.

[0026] When the compression spring 22 of the present invention is in a natural state, the compression spring 22 presses the magnet 21 upward, so the connecting assembly causes the right end of the metal connecting piece 7 to contact the upper contact end 621 on the first secondary lead 62. Since the left end of the metal connecting piece 7 contacts the contact piece of the main lead 61, the main lead 61 and the first secondary lead 62 form a closed loop at this time. When the external magnetic block that repels the upper end of the magnet 21 approaches the upper end of the shell 1, the magnet 21 compresses the compression spring 22 downward to move, thereby causing the metal connecting piece 7 to move downward through the connecting assembly. At this time, the right end of the metal connecting piece 7 contacts the lower contact end 631 of the second secondary lead 63. Since the left end of the metal connecting piece 7 contacts the contact piece of the main lead 61, the main lead 61 and the second secondary lead 63 form another closed loop. Therefore, the present invention can selectively use the two closed loops according to needs, and has higher applicability.

[0027] Specifically, the connecting component includes a guide rod 81 and a mounting seat 82. The upper end of the guide rod 81 is fixed to the lower side of the magnet 21, and a guide hole 31 is provided on the guide seat 3 for the guide rod 81 to pass through. The guide rod 81 passes through the guide hole 31 and is fixedly connected to the mounting seat 82. Attention should be paid to the sealing between the guide rod 81 and the guide hole 31. If necessary, a sealing structure such as a sealing ring can be installed. An assembly port 32 is provided on the lower side of the guide seat 3, and the upper half of the mounting seat 82 is slidably arranged in the assembly port 32, and the lower half of the mounting seat 82 extends into the sealed space 51 and is fixedly connected to the metal connecting piece 7.

[0028] Furthermore, the guide seat 3 is provided with a limit groove 321 on the upper side of the assembly opening 32, and the mounting seat 82 includes a limit block 821 slidably arranged in the limit groove 321. The limit groove 321 is used to limit the relative rotation of the limit block 821, thereby preventing the metal connecting piece 7 from rotating, thereby ensuring the reliable and stable performance of the operation of the utility model.

[0029] The specific structure of the metal connecting piece 7 installed on the mounting seat 82 is as follows: a connecting port 822 is opened at the lower end of the mounting seat 82, the middle part of the metal connecting piece 7 is located in the connecting port 822, and a gasket 83 is provided on the lower side of the metal connecting piece 7, and a screw 84 is provided on the gasket 83. The screw 84 passes through the gasket 83 and the metal connecting piece 7 and is threadedly connected to the mounting seat 82. At this time, the metal connecting piece 7 is pressed tightly in the connecting port 822 by the gasket 83, and the connection is firm.

[0030] In the present invention, the contact member specifically includes a connecting piece 91 and a U-shaped piece 92. The connecting piece 91 is L-shaped and fixedly connected to the main lead 61, while the middle portion of the U-shaped piece 92 is fixedly connected to the connecting piece 91. The U-shaped piece 92 includes contact pieces 921 located on the upper and lower sides of the metal connecting piece 7. The contact piece 921 is provided with a bent contact protrusion 922 that arches toward the metal connecting piece 7. In addition, a contact protrusion 71 is provided on the right end of the metal connecting piece 7, and the upper and lower ends of the contact protrusion 71 protrude toward the upper contact end 621 and the lower contact end 631, respectively. It should be noted that when the contact boss 71 on the right end of the metal connecting piece 7 is in abutment with the upper contact end 621, the left end of the metal connecting piece 7 has already been in abutment with the contact piece 921 on the upper side of the metal connecting piece 7 on the U-shaped piece 92, and when the contact boss 71 on the right end of the metal connecting piece 7 is in abutment with the lower contact end 631, the left end of the metal connecting piece 7 has already been in abutment with the contact piece 921 on the lower side of the metal connecting piece 7 on the U-shaped piece 92. The U-shaped piece 92 has good elastic recovery ability, and the bent contact protrusion 922 facilitates close contact with the metal connecting piece 7.

[0031] In addition, the lower end of the shell 1 is integrally formed with an easy-to-rotate connecting sleeve 12, and a thread can be opened in the easy-to-rotate connecting sleeve 12, so that it is easy to connect with other equipment that needs to be installed with the utility model.

[0032] It should also be pointed out that the terms indicated in the present invention, such as "front", "rear", "vertical", "horizontal", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetic switch with high applicability, characterized in that: The invention comprises a cylindrical shell, wherein a mounting cavity opening downward is provided inside the shell, wherein a magnet, a guide seat and a sealing seat are arranged in sequence from top to bottom in the mounting cavity, wherein the guide seat and the sealing seat are both fixed inside the shell, wherein the magnet is movably arranged inside the shell, wherein a glass tube is arranged between the guide seat and the sealing seat, wherein the upper and lower ends of the glass tube are respectively sealed with the guide seat and the sealing seat, wherein a sealed space is formed inside the glass tube, wherein a main lead, a first secondary lead and a second secondary lead passing through the sealing seat and entering the sealed space are arranged on the lower side of the shell, wherein a metal connecting piece is also arranged in the sealed space, wherein a connecting assembly passing through the guide seat and connected to the metal connecting piece is arranged on the lower side of the magnet, wherein a compression spring is arranged between the magnet and the guide seat, wherein a contact piece for contacting the left end of the metal connecting piece is arranged on the main lead, wherein an upper contact end located on the upper side of the right end of the metal connecting piece is connected to the first secondary lead, and wherein a lower contact end located on the lower side of the right end of the metal connecting piece is connected to the second secondary lead.

2. A magnetic switch with high applicability according to claim 1, characterized in that: The connecting component includes a guide rod and a mounting seat, the upper end of the guide rod is fixed to the lower side of the magnet, the guide seat is provided with a guide hole for the guide rod to pass through, the guide rod passes through the guide hole and is fixedly connected to the mounting seat, the lower side of the guide seat is provided with an assembly opening, the upper half of the mounting seat is slidably arranged in the assembly opening, and the lower half of the mounting seat extends into the sealed space and is fixedly connected to the metal connecting sheet.

3. A magnetic switch with high applicability according to claim 2, characterized in that: The guide seat is provided with a limiting groove on the upper side of the assembly opening, and the mounting seat includes a limiting block slidably arranged in the limiting groove, and the limiting groove is used to limit the relative rotation of the limiting block.

4. A magnetic switch with high applicability according to claim 2, characterized in that: A connection port is provided at the lower end of the mounting seat, the middle part of the metal connecting plate is located in the connection port, a gasket is provided on the lower side of the metal connecting plate, a screw is provided on the gasket, and the screw passes through the gasket and the metal connecting plate and is threadedly connected to the mounting seat.

5. A magnetic switch with high applicability according to claim 1, characterized in that: The contact piece includes a connecting piece and a U-shaped piece. The connecting piece is L-shaped and fixedly connected to the main lead. The U-shaped piece is fixedly connected to the connecting piece. The U-shaped piece includes contact pieces located at the upper and lower sides of the metal connecting piece.

6. A magnetic switch with high applicability according to claim 5, characterized in that: The contact sheet is provided with a bent contact protrusion which is arched in an arc shape toward the metal connecting sheet.

7. A magnetic switch with high applicability according to claim 1, characterized in that: A contact convex column is arranged on the right end of the metal connecting sheet, and upper and lower ends of the contact convex column protrude toward the upper contact end and the lower contact end respectively.

8. A magnetic switch with high applicability according to claim 1, characterized in that: The lower end of the shell is integrally formed with an easy-to-rotate connecting sleeve.

Images