Magnetic isolation timer

Abstract

The utility model discloses a magnetic isolation timer which comprises a support, a containing space is formed in the support, a timer body is arranged in the containing space, the timer body comprises a main shaft, the main shaft penetrates through the support, a magnetic isolation assembly is arranged on the support, and the magnetic isolation assembly comprises a first magnetic isolation plate and a second magnetic isolation plate. The first magnetism isolating plate and the second magnetism isolating plate are both made of magnetism isolating materials, the second magnetism isolating plate is arranged above the first magnetism isolating plate, the first magnetism isolating plate and the second magnetism isolating plate are both fixedly connected with the main shaft, a first through hole matched with the main shaft is formed in the center of the first magnetism isolating plate, and a second through hole matched with the main shaft is formed in the center of the second magnetism isolating plate. The first magnetism isolating plate and the second magnetism isolating plate are both made of magnetism isolating materials, have different magnetic conductivities and can effectively absorb and offset an external magnetic field, a good magnetism isolating effect can be achieved, and normal work of the timer body in a magnetic field environment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of timers, in particular to a magnetic isolation timer. Background Art

[0002] With the development and progress of science and technology, timers are increasingly used in various types of equipment. In the field of gas applications, in order to solve the problem that users forget to close the valve after using the gas, there are currently timers on the gas self-closing valves on the market that use timers to achieve the function of timing switches, effectively avoiding safety hazards such as gas leakage.

[0003] Gas self-closing valve, referred to as self-closing valve, is installed on the gas system pipeline. When the pipeline gas supply pressure is underpressure or overpressure, it can automatically close and must be opened manually without electricity or other external power. The gas self-closing valve uses a magnetic field to control the opening and closing of the valve. By driving the magnetic elements inside the valve, the valve can be automatically controlled. However, in actual application, the magnetic field inside the self-closing valve not only plays a role in controlling the opening and closing of the valve, but also interferes with the operation of the timer, affecting its accuracy and stability. The magnetic field inside the self-closing valve will affect the components in the timer, causing the operating speed of the timer components to change, which will affect the timing accuracy of the timer and make the timer invalid. Therefore, it is necessary to improve it. Utility Model Content

[0004] The purpose of the utility model is to provide a magnetic isolation timer in view of the defects and shortcomings of the prior art. The timer has a simple and reasonable structure and is easy to operate. The magnetic isolation component is provided to block and weaken the influence of the external magnetic field on the timer body, thereby ensuring the normal operation of the timer body in a magnetic field environment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A magnetic isolation timer described in the utility model includes a bracket, a accommodating space is formed in the bracket, a timer body is arranged in the accommodating space, the timer body includes a main shaft, the main shaft passes through the bracket, a magnetic isolation component is arranged on the bracket, the magnetic isolation component includes a first magnetic isolation plate and a second magnetic isolation plate, the first magnetic isolation plate and the second magnetic isolation plate are both made of magnetic isolation material, the second magnetic isolation plate is arranged above the first magnetic isolation plate, the first magnetic isolation plate and the second magnetic isolation plate are both fixedly connected to the main shaft, a first through hole matching with the main shaft is arranged at the center of the first magnetic isolation plate, and a second through hole matching with the main shaft is arranged at the center of the second magnetic isolation plate.

[0007] Furthermore, the first magnetic isolation plate is made of aluminum material.

[0008] Furthermore, the second magnetic isolation plate is made of iron material.

[0009] Further, the first through hole is a round hole, and the second through hole is a special-shaped hole, and the hole area of ​​the special-shaped hole is smaller than the hole area of ​​the round hole.

[0010] Furthermore, the bracket includes a first clamping plate, a second clamping plate and a connecting column, one end of the connecting column is fixedly connected to the first clamping plate, and the other end of the connecting column is fixedly connected to the second clamping plate, and the space formed between the first clamping plate, the second clamping plate and the connecting column is the accommodating space.

[0011] Furthermore, a fastener is provided on the connecting column, and the second clamping plate and the connecting column are fastened by the fastener.

[0012] Furthermore, a positioning card is fixedly provided between the main shaft and the second clamping plate.

[0013] Furthermore, the timer body also includes a mainspring, a vibration component with a natural period, and a gear component for transmitting the energy of the mainspring to the vibration component. The mainspring is connected to the main shaft and drives the main shaft to rotate.

[0014] Furthermore, the vibration assembly includes a balance wheel, and the balance wheel is connected to a balance fork and a hairspring.

[0015] Furthermore, the gear assembly includes a first wheel, a second wheel, a third wheel, a fourth wheel and an escape wheel which are meshed and connected in sequence. The first wheel is arranged on the main shaft and driven to rotate by the main shaft. One end of the escape wheel is connected to the vibration assembly.

[0016] The beneficial effects of the utility model are as follows: a magnetic isolation timer described in the utility model has a magnetic isolation component on the bracket to block and weaken the influence of the external magnetic field on the timer body, ensuring the normal operation of the timer body in the magnetic field environment, the magnetic isolation component includes a first magnetic isolation plate and a second magnetic isolation plate, the first magnetic isolation plate and the second magnetic isolation plate are both made of magnetic isolation materials and have different magnetic permeabilities, the second magnetic isolation plate is arranged above the first magnetic isolation plate, the second magnetic isolation plate is made of iron material and has a higher magnetic permeability, so that the second magnetic isolation plate is easily magnetized in the magnetic field and can effectively absorb and offset the external magnetic field, the first magnetic isolation plate is made of aluminum material and has a lower magnetic permeability, when used in combination with magnetic materials, a better magnetic isolation effect can be achieved, and by using the combination of magnetic magnetic isolation materials and non-magnetic materials, the timer can achieve the best magnetic isolation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the gear assembly and the vibration assembly;

[0019] Figure 3 is a schematic structural diagram of a first magnetic isolation plate;

[0020] Figure 4 It is a schematic structural diagram of the second magnetic isolation plate.

[0021] Figure 1-4 In: 1. bracket; 11. first splint; 12. second splint; 13. connecting column; 14. fastener; 15. positioning card; 2. timer body; 21. main shaft; 22. mainspring; 23. gear assembly; 231. first wheel; 232. second wheel; 233. third wheel; 234. fourth wheel; 235. escape wheel; 24. vibration assembly; 241. balance wheel; 242. balance fork; 3. first magnetic shielding plate; 4. second magnetic shielding plate; 31. first through hole; 41. second through hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-4 The magnetic isolation timer shown in the figure comprises a bracket 1, wherein a containing space is formed in the bracket 1, wherein a timer body 2 is arranged in the containing space, wherein the timer body 2 comprises a main shaft 21, wherein the main shaft 21 passes through the bracket 1, wherein a magnetic isolation component is arranged on the bracket 1, so as to block and weaken the influence of the external magnetic field on the timer body 2, thereby ensuring the normal operation of the timer body 2 in a magnetic field environment, wherein the magnetic isolation component comprises a first magnetic isolation plate 3 and a second magnetic isolation plate 4, wherein the first magnetic isolation plate 3 and the second magnetic isolation plate 4 are both made of magnetic isolation materials and have different magnetic permeabilities, wherein the second magnetic isolation plate 4 is arranged on the first isolation plate 3 and ... Above the magnetic plate 3, specifically, the second magnetic isolation plate 4 is made of iron material and has a high magnetic permeability, so that the second magnetic isolation plate 4 is easily magnetized in the magnetic field and can effectively absorb and offset the external magnetic field. The first magnetic isolation plate 3 is made of aluminum material and has a low magnetic permeability. When used in combination with magnetic materials, a better magnetic isolation effect can be achieved. By using a combination of magnetic magnetic isolation materials and non-magnetic materials, the timer can achieve the best magnetic isolation effect. The first magnetic isolation plate 3 and the second magnetic isolation plate 4 are fixedly connected to the main shaft 21 to ensure the stability of the connection. See Figure 3-4 A first through hole 31 matching with the main shaft 21 is provided at the center of the first magnetic isolation plate 3, and a second through hole 41 matching with the main shaft 21 is provided at the center of the second magnetic isolation plate 4; preferably, in this embodiment, the first through hole 31 is a circular hole, and the second through hole 41 is an irregular hole, and the hole area of ​​the irregular hole is smaller than that of the circular hole, thereby reducing the influence of the magnetic field on the timer body 2.

[0024] Preferably, in this embodiment, the bracket 1 includes a first clamping plate 11, a second clamping plate 12 and a connecting column 13, one end of the connecting column 13 is fixedly connected to the first clamping plate 11, and the other end of the connecting column 13 is fixedly connected to the second clamping plate 12. Preferably, in this embodiment, a fastener 14 is also provided on the connecting column 13, and the second clamping plate 12 and the connecting column 13 are fastened by the fastener 14. The fastener 14 can be a screw, and the connection relationship is firm and reliable. The number of connecting columns 13 can be set as needed, and the preferred number is set to 3-4. The space formed between the first clamping plate 11, the second clamping plate 12 and the connecting column 13 is the accommodating space.

[0025] Preferably, in this embodiment, a positioning card 15 is fixedly provided between the main shaft 21 and the second clamping plate 12 to play a positioning role and prevent the main shaft 21 from vibrating or shaking during operation.

[0026] Preferably, in this embodiment, the timer body 2 also includes a mainspring 22, a vibration component 24 with an inherent period, and a gear component 23 for transmitting the energy of the mainspring 22 to the vibration component 24. The mainspring 22 is connected to the main shaft 21 and drives the main shaft 21 to rotate. Specifically, the mainspring 22 is configured to be wound around the main shaft 21. The mainspring 22 is the energy device of the entire timer. The energy generated after the mainspring 22 is tightened drives the main shaft 21 to rotate around its own axis. The installation method in which the main shaft 21 can rotate around its own axis is a technology well known in the art and will not be described in detail here. After the energy of the mainspring 22 is released, it is transmitted to the gear component 23 and the vibration component 24 through the main shaft 21.

[0027] Preferably, in this embodiment, refer to Figure 2 The vibration assembly 24 includes a balance wheel 241, and the balance wheel 241 is connected with a pendulum fork 242 and a hairspring, which is not shown in the figure. In the timer, the power released by the mainspring 22 is transmitted to the hairspring and the balance wheel 241 in the vibration assembly 24 to perform simple harmonic motion, generating a reaction force to achieve the purpose of deceleration. In the entire operation process, the vibration assembly 24 is responsible for controlling the speed, wherein the simple harmonic motion frequency of the balance wheel 241 and the hairspring formally provides the benchmark for the operation of the entire timing system. The pendulum fork 242, the balance wheel 241 and the hairspring in the vibration assembly 24 are well-known technologies in the art and will not be described in detail here.

[0028] Preferably, in this embodiment, refer to Figure 2The gear assembly 23 includes a head wheel 231, a second wheel 232, a third wheel 233, a fourth wheel 234 and an escape wheel 235 which are meshed and connected in sequence. The head wheel 231 is set on the main shaft 21 and driven to rotate by the main shaft 21. The second wheel 232, the third wheel 233 and the fourth wheel 234 are intermediate gears. One end of the escape wheel 235 is connected to the vibration assembly 24. Specifically, the escape wheel 235 is connected with the balance fork 242 so that the hairspring and the balance wheel 241 perform simple harmonic motion.

[0029] The timer body 2 described in the present invention is a prior art. For the specific structure of the timer body 2, reference may be made to a gas timer disclosed in a Chinese patent application (publication number: CN104791857A). In view of the fact that the basic structure / principle of the timer body 2 has been disclosed in detail in the prior art, it will not be described in detail in this embodiment.

[0030] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A magnetic isolation timer, comprising a bracket (1), wherein a receiving space is formed in the bracket (1), a timer body (2) is arranged in the receiving space, the timer body (2) comprises a main shaft (21), and the main shaft (21) passes through the bracket (1), characterized in that: The bracket (1) is provided with a magnetic isolation component, the magnetic isolation component comprising a first magnetic isolation plate (3) and a second magnetic isolation plate (4), the first magnetic isolation plate (3) and the second magnetic isolation plate (4) are both made of magnetic isolation material, the second magnetic isolation plate (4) is arranged above the first magnetic isolation plate (3), the first magnetic isolation plate (3) and the second magnetic isolation plate (4) are both fixedly connected to the main shaft (21), the center of the first magnetic isolation plate (3) is provided with a first through hole (31) matching with the main shaft (21), and the center of the second magnetic isolation plate (4) is provided with a second through hole (41) matching with the main shaft (21).

2. A magnetic isolation timer according to claim 1, characterized in that: The first magnetic isolation plate (3) is made of aluminum material.

3. A magnetic isolation timer according to claim 1, characterized in that: The second magnetic isolation plate (4) is made of iron material.

4. The magnetic isolation timer according to claim 1, characterized in that: The first through hole (31) is a circular hole, and the second through hole (41) is a special-shaped hole, wherein the hole area of ​​the special-shaped hole is smaller than the hole area of ​​the circular hole.

5. The magnetic isolation timer according to claim 1, characterized in that: The bracket (1) comprises a first clamping plate (11), a second clamping plate (12) and a connecting column (13); one end of the connecting column (13) is fixedly connected to the first clamping plate (11), and the other end of the connecting column (13) is fixedly connected to the second clamping plate (12); and a space formed between the first clamping plate (11), the second clamping plate (12) and the connecting column (13) is the accommodating space.

6. A magnetic isolation timer according to claim 5, characterized in that: A fastener (14) is also provided on the connecting column (13), and the second clamping plate (12) and the connecting column (13) are fastened by the fastener (14).

7. The magnetic isolation timer according to claim 5, characterized in that: A positioning card (15) is fixedly provided between the main shaft (21) and the second clamping plate (12).

8. The magnetic isolation timer according to claim 1, characterized in that: The timer body (2) further comprises a mainspring (22), a vibration component (24) having a natural period, and a gear component (23) for transmitting energy of the mainspring (22) to the vibration component (24); the mainspring (22) is connected to the main shaft (21) and drives the main shaft (21) to rotate.

9. A magnetic isolation timer according to claim 8, characterized in that: The vibration component (24) comprises a balance wheel (241), and a balance fork (242) and a hairspring are connected to the balance wheel (241).

10. The magnetic isolation timer according to claim 8, characterized in that: The gear assembly (23) comprises a head wheel (231), a second wheel (232), a third wheel (233), a fourth wheel (234), and an escape wheel (235) which are meshed and connected in sequence; the head wheel (231) is arranged on the main shaft (21) and is driven to rotate by the main shaft (21); one end of the escape wheel (235) is connected to the vibration assembly (24).

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