A kind of axial motion mechanism based on magnetic coupling for instrument and meter and instrument and meter

Abstract

The utility model discloses a kind of for instrument and apparatus based on magnetic coupling axial motion mechanism, it includes device ontology, it includes first surface and second surface;Knob device, it includes first magnetic force coupler and elastic positioning assembly of assembly setting in first surface;Turntable device, it includes second magnetic force coupler and turntable assembly of assembly setting in second surface;Wherein, first magnetic force coupler and second magnetic force coupler coaxial arrangement and form magnetic coupling, elastic positioning assembly is driven turntable assembly synchronous rotation by magnetic coupling effect, to realize knob device and turntable device non-contact transmission connection;Also disclose a kind of instrument and apparatus.The utility model uses magnetic coupling axial or radial non-contact transmission connection mode, realizes the power transmission between knob device and turntable device, avoids the wear problem of traditional mechanical connection, prolongs service life, and realizes accurate rotation positioning every gear, meets the application scene of higher requirement to rotation accuracy.

Description

Technical Field

[0001] This utility model relates to the field of instrumentation technology, specifically to an axial motion mechanism based on magnetic coupling for instruments and meters, and related instruments. Background Technology

[0002] Among the numerous instruments and equipment on the market, planar axial or radial rotating dynamic seals are widely used. However, existing planar axial or radial rotating dynamic seal structures have many problems: On the one hand, the sealing rings of traditional instruments and meters are prone to wear and aging during rotation, which affects the sealing performance and leads to leakage and sealing failure. On the other hand, it can affect safe operation and use under high voltage and current equipment. On the other hand, when achieving precise rotational positioning, traditional sealing ring structures often struggle to achieve the accuracy of each function setting due to damping, and the operation feel is poor. During rotation, problems such as jamming, mis-setting, and uneven resistance are prone to occur. The more sealing performance is pursued, the greater the rotational damping becomes, which affects the user experience and work efficiency of the equipment.

[0003] With the continuous development of industrial technology, the performance requirements for planar axial or radial rotary dynamic sealing structures are becoming increasingly stringent, creating an urgent need for an innovative design mechanism that can solve these problems. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, this utility model discloses a magnetic coupling axial motion mechanism for instruments and meters and instruments.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows: A magnetically coupled axial motion mechanism for instruments and meters, the mechanism comprising: The device body includes a first surface and a second surface disposed opposite to each other; A knob device, comprising a first magnetic coupler and an elastic positioning component mounted on the first surface; A turntable device, comprising a second magnetic coupler and a turntable assembly mounted on the second surface; The first magnetic coupler and the second magnetic coupler are coaxially arranged and form a magnetic coupling. The elastic positioning component drives the turntable component to rotate synchronously through the magnetic coupling, so as to realize the non-contact transmission connection between the knob device and the turntable device.

[0006] The above-mentioned magnetic coupling axial motion mechanism for instruments and meters includes a first positioning post extending from the first surface, and the knob device being rotatably mounted on the first positioning post. A positioning ring is provided around the first positioning post, and the knob device is slidably disposed on the positioning ring to achieve fixed-point rotation.

[0007] The aforementioned magnetic coupling axial motion mechanism for instruments and meters includes a knob body, a spring, and a steel ball. The knob body is provided with a first coupler mounting slot, and the first magnetic coupler is disposed in the first coupler mounting slot and is fitted to the first surface. At least two sets of spring mounting slots are provided around the first coupler mounting slot. The spring is disposed in the spring mounting slot, and the steel ball is exposed in the spring mounting slot and abuts against the spring, so that when the knob body is rotated, the steel ball slides along the movement trajectory on the positioning ring plate under the elastic action of the spring.

[0008] The above-mentioned magnetic coupling axial motion mechanism for instruments and meters includes several sets of stop structures arranged in a circular array on the positioning ring disk. The gear stop structure includes a stop groove and arc-shaped sliding walls arranged on both sides of the stop groove along the sliding direction of the steel ball. Adjacent arc-shaped sliding walls are connected to form arc-shaped slope teeth, so that the steel ball can perform elastic rolling motion on the stop groove and arc-shaped slope teeth along the movement trajectory to achieve contact sliding.

[0009] The aforementioned axial motion mechanism for instruments based on magnetic coupling has a first positioning hole through the first magnetic coupler, and the first magnetic coupler is fitted onto the first positioning post through the first positioning hole. The first magnetic coupler is also provided with at least three sets of first limiting holes; The knob body is provided with a first limiting post for limiting assembly with the first limiting hole, so as to realize the synchronous rotation of the knob body and the first magnetic coupler.

[0010] The aforementioned axial motion mechanism for instruments based on magnetic coupling includes a second positioning post extending from the second surface. The second positioning post and the first positioning post are on the same central axis. The turntable device is rotatably mounted on the second positioning post to enable the turntable assembly to rotate synchronously with the elastic positioning assembly through magnetic coupling.

[0011] The aforementioned magnetic coupling axial motion mechanism for instruments and meters includes a turntable assembly comprising a turntable body, wherein the turntable body comprises a third surface and a fourth surface disposed opposite to each other. A second coupler mounting groove is provided on the third surface, and the second magnetic coupler is disposed in the second coupler mounting groove and is fitted to the second surface; An electrical connection structure is provided on the fourth surface to achieve gear switching through non-contact transmission.

[0012] The above-mentioned axial motion mechanism for instruments based on magnetic coupling includes a PCB, a third positioning hole is provided through the PCB, and a blade disc circuit is provided on the PCB. A third positioning post is provided extending from the fourth surface. The third positioning post and the second positioning post are on the same central axis. The third positioning post is inserted into the third positioning hole so that when the turntable body rotates, the electrical connection structure is electrically connected to the cutter head circuit to realize gear switching.

[0013] The aforementioned axial motion mechanism for instruments based on magnetic coupling includes a second positioning hole that passes through the second magnetic coupler, and the second magnetic coupler is fitted onto the second positioning post through the second positioning hole. The second magnetic coupler is also provided with at least three sets of second limiting holes; The turntable body is provided with a second limiting post for limiting assembly with the second limiting hole, so as to realize the synchronous rotation of the turntable body and the second magnetic coupler.

[0014] An instrument, the instrument comprising the above-described magnetically coupled axial motion mechanism for the instrument.

[0015] The beneficial effects of this utility model are as follows: This utility model innovatively sets the knob device and the turntable device on the first and second surfaces of the device body, and adopts a magnetic coupling axial or radial non-contact transmission connection method to realize the power transmission between the knob device and the turntable device. This solves the problems of sealing performance, rotation positioning accuracy and operation feel of traditional sealing ring structures during rotation. On the one hand, it achieves full system sealing, effectively improves the reliability and durability of the seal, eliminates leakage, can adapt to various complex working environments, avoids the wear problems of traditional mechanical connections, reduces maintenance costs and extends service life. On the other hand, it achieves precise rotation positioning of each function position, meets the application scenarios with high requirements for rotation accuracy, optimizes the rotation feel, makes the rotation operation more stable and smooth, greatly improves the user experience of operators and reduces operator fatigue. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an exploded view of the structure of this utility model; Figure 2 This is a front view schematic diagram of the device body in this utility model; Figure 3 This is a rear view of the device body in this utility model; Figure 4 This is a front view schematic diagram of the positioning ring disk in this utility model; Figure 5 This is a three-dimensional schematic diagram of the knob body in this utility model; Figure 6 This is a front view schematic diagram of the turntable body in this utility model; Figure 7 This is a rear view of the turntable body in this utility model; Figure 8 This is a front view of the PCB in this utility model. Detailed Implementation

[0018] The present invention will be further described below through specific embodiments, so as to make the technical solution of the present invention easier to understand and master, rather than to limit the present invention.

[0019] Example: See Figures 1 to 8 This embodiment provides a magnetic coupling-based axial motion mechanism for instruments and meters, the mechanism comprising: The device body 1 includes a first surface and a second surface disposed opposite to each other; A knob device, comprising a first magnetic coupler 21 and an elastic positioning assembly mounted on the first surface; A turntable device, comprising a second magnetic coupler 31 mounted on the second surface and a turntable assembly; The first magnetic coupler 21 and the second magnetic coupler 31 are coaxially arranged and form a magnetic coupling. The elastic positioning component drives the turntable component to rotate synchronously through the magnetic coupling, so as to realize the non-contact transmission connection between the knob device and the turntable device.

[0020] Specifically, the rotary device and the turntable device are innovatively positioned on the first and second surfaces of the device body 1, and a magnetic coupling axial or radial non-contact transmission connection is used to realize the power transmission between the rotary device and the turntable device. This solves the problems of sealing performance, rotational positioning accuracy, and operating feel of traditional sealing ring structures during rotational movement. On the one hand, it achieves full system sealing, effectively improving the reliability and durability of the seal, eliminating leakage, adapting to various complex working environments, avoiding the wear problems of traditional mechanical connections, reducing maintenance costs, and extending service life. On the other hand, it achieves precise rotational positioning of each function position, meeting the application scenarios with high requirements for rotational accuracy, optimizing the rotational feel, making the rotational operation more stable and smooth, greatly improving the user experience of operators, and reducing operational fatigue.

[0021] Preferably, a first positioning post 11 is provided extending from the first surface, and the knob device is rotatably disposed on the first positioning post 11 to ensure that the knob device always rotates around the first positioning post 11. A positioning ring disk 12 is provided around the first positioning post 11, and the knob device is slidably disposed on the positioning ring disk 12 to achieve fixed-point rotation.

[0022] Preferably, the elastic positioning component includes a knob body 22, a spring 23, and a steel ball 24; A first coupler mounting slot is provided on the knob body 22, and the first magnetic coupler 21 is disposed in the first coupler mounting slot and is attached to the first surface to ensure that the first magnetic coupler 21 is stably magnetically coupled to the second magnetic coupler 31 in the first coupler mounting slot. At least two sets of spring mounting slots are provided around the first coupler mounting slot. The spring 23 is disposed in the spring mounting slot, and the steel ball 24 is exposed in the spring mounting slot and abuts against the spring 23, so that when the knob body 22 is rotated, the steel ball 24 slides along the movement trajectory on the positioning ring disk 12 under the elastic action of the spring 23. Specifically, rotating the knob body 22 drives the first magnetic coupler 21 to rotate synchronously in the first coupler mounting slot. At this time, the steel ball 24 rotates synchronously on the positioning ring disk 12 to form a movement trajectory.

[0023] Preferably, the positioning ring disk 12 is provided with a plurality of gear stop structures arranged in a circular array; specifically, the number of gear stop structures can be set according to actual usage requirements to correspond to the number of gears, wherein each gear corresponds to one gear stop structure. The gear stop structure includes a stop groove 121 and arc-shaped sliding walls arranged on both sides of the stop groove 121 along the sliding direction of the steel ball 24. Adjacent arc-shaped sliding walls are connected to form arc-shaped slope teeth 122, so that the steel ball 24 can perform elastic rolling motion on the stop groove 121 and arc-shaped slope teeth 122 along the movement trajectory to achieve contact sliding.

[0024] Specifically, when the knob body 22 is rotated, the steel ball 24 slides up the arc-shaped sliding wall, passes the arc-shaped serration 122, and then slides down the next arc-shaped sliding wall, finally rolling into the stop groove 121, so that the steel ball 24 can perform elastic rolling motion along the movement trajectory, which can not only achieve precise positioning to each function level, but also improve the comfort of the hand.

[0025] Furthermore, a first positioning hole is provided through the first magnetic coupler 21, and the first magnetic coupler 21 is fitted onto the first positioning post 11 through the first positioning hole to avoid affecting the magnetic coupling effect due to displacement. The first magnetic coupler 21 is also provided with at least three sets of first limiting holes; The knob body 22 is provided with a first limiting post 25 for limiting assembly with the first limiting hole, so as to realize the synchronous rotation of the knob body 22 and the first magnetic coupler 21.

[0026] Preferably, a second positioning post 13 is provided extending from the second surface. The second positioning post 13 and the first positioning post 11 are on the same central axis. The turntable device is rotatably disposed on the second positioning post 13 so that the turntable assembly can rotate synchronously with the elastic positioning assembly through magnetic coupling, ensuring that the turntable always rotates around the second positioning post 13 and avoiding the magnetic coupling effect being affected by offset.

[0027] Preferably, the turntable assembly includes a turntable body 32, the turntable body 32 including a third surface and a fourth surface disposed opposite to each other; A second coupler mounting groove is provided on the third surface, and the second magnetic coupler 31 is disposed in the second coupler mounting groove and is fitted to the second surface to ensure that the first magnetic coupler 21 and the second magnetic coupler 31 are always magnetically coupled around the same axis. An electrical connection structure 33 is provided on the fourth surface to achieve gear switching through non-contact transmission.

[0028] Furthermore, the mechanism also includes a PCB 4, through which a third positioning hole 41 is provided, and a blade disc circuit 42 is provided on the PCB 4; the blade disc circuit 42 can be configured with corresponding gear functions according to the angle to correspond to the function gears printed on the device body 1. A third positioning post 35 is provided extending from the fourth surface. The third positioning post 35 and the second positioning post 13 are on the same central axis. The third positioning post 35 is inserted into the third positioning hole 41 so that when the turntable body 32 rotates, the electrical connection structure 33 is electrically connected to the cutter head circuit 42 to realize gear switching and prevent the turntable device from deviating from the PCB 4.

[0029] Furthermore, a second positioning hole is provided through the second magnetic coupler 31, and the second magnetic coupler 31 is fitted onto the second positioning post 13 through the second positioning hole to avoid affecting the magnetic coupling effect due to displacement; The second magnetic coupler 31 is also provided with at least three sets of second limiting holes; The turntable body 32 is provided with a second limiting post 34 for limiting assembly with the second limiting hole, so as to realize the synchronous rotation of the turntable body 32 and the second magnetic coupler 31.

[0030] Furthermore, the electrical connection structure 33 includes several groups of metal V-plates arranged in a circular array, so that when the turntable body 32 rotates, the metal V-plates rotate with the turntable body 32 and are electrically connected to the cutter disc circuit 42 to achieve gear switching.

[0031] Furthermore, a rotation stop 14 for limiting the rotation angle of the knob body 22 is also provided on the first surface, and the rotation stop is provided adjacent to the positioning ring disk 12; A baffle limiting groove is provided in the knob body 22, and the rotating baffle 14 is rotatably disposed in the baffle limiting groove so that when the knob body 22 rotates, the rotating baffle 14 moves along the baffle limiting groove to limit the rotation angle of the knob body 22.

[0032] Furthermore, the first magnetic coupler 21 and the second magnetic coupler 31 are composed of 45# steel and neodymium iron boron permanent magnets with multi-pole magnetization, which have the characteristics of strong magnetic force, large transmission torque and economy.

[0033] This embodiment also discloses an instrument, which includes the above-described axial motion mechanism based on magnetic coupling for the instrument.

[0034] The magnetic coupling axial motion mechanism for instruments and meters of this utility model includes the following steps during operation: Step 1: Rotate the knob body 22 to drive the first magnetic coupler 21 to rotate synchronously. At this time, based on the elastic action of the spring 23, the steel ball 24 slides up the arc-shaped sliding wall, passes the arc-shaped bevel tooth 122, and then slides down the next arc-shaped sliding wall, finally rolling into the stop groove 121 to realize the rotation adjustment gear. Step 2: Based on the rotation of the first magnetic coupler 21, the second magnetic coupler 31 rotates synchronously through magnetic coupling, thereby driving the turntable body 32 to rotate synchronously as well. At this time, the electrical connection structure 33 makes a corresponding electrical connection to the cutter disc circuit 42 to realize gear switching.

[0035] The magnetic coupling axial motion mechanism for instruments and meters of this invention has the following advantages: This invention innovatively places the knob and turntable devices on the first and second surfaces of the device body, employing a magnetic coupling axial or radial non-contact transmission connection to achieve power transmission between the knob and turntable devices. This solves the problems of sealing performance, rotational positioning accuracy, and operating feel in traditional sealing ring structures during rotational movement. On the one hand, it achieves full system sealing, effectively improving the reliability and durability of the seal, eliminating leakage, adapting to various complex working conditions, avoiding the wear problems of traditional mechanical connections, reducing maintenance costs, and extending service life. On the other hand, it achieves precise rotational positioning of each function position, meeting the application scenarios with high requirements for rotational accuracy, optimizing the rotational feel, making rotational operation more stable and smooth, greatly improving the operator's user experience, and reducing operational fatigue.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed technical means and content, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A magnetically coupled axial motion mechanism for instruments and meters, characterized in that, The institutions include: The device body includes a first surface and a second surface disposed opposite to each other; A knob device, comprising a first magnetic coupler and an elastic positioning component mounted on the first surface; A turntable device, comprising a second magnetic coupler and a turntable assembly mounted on the second surface; The first magnetic coupler and the second magnetic coupler are coaxially arranged and form a magnetic coupling. The elastic positioning component drives the turntable component to rotate synchronously through the magnetic coupling, so as to realize the non-contact transmission connection between the knob device and the turntable device.

2. The axial motion mechanism for instruments based on magnetic coupling according to claim 1, characterized in that, A first positioning post is provided extending from the first surface, and the knob device is rotatably disposed on the first positioning post; A positioning ring is provided around the first positioning post, and the knob device is slidably disposed on the positioning ring to achieve fixed-point rotation.

3. The magnetically coupled axial motion mechanism for instruments and meters according to claim 2, characterized in that, The elastic positioning component includes a knob body, a spring, and a steel ball; A first coupler mounting slot is provided on the knob body, and the first magnetic coupler is disposed in the first coupler mounting slot and is fitted to the first surface. At least two sets of spring mounting slots are provided around the first coupler mounting slot. The spring is disposed in the spring mounting slot, and the steel ball is exposed in the spring mounting slot and abuts against the spring, so that when the knob body is rotated, the steel ball slides along the movement trajectory on the positioning ring plate under the elastic action of the spring.

4. The magnetically coupled axial motion mechanism for instruments and meters according to claim 3, characterized in that, The positioning ring disk is provided with several sets of gear stop structures arranged in a circular array; The gear stop structure includes a stop groove and arc-shaped sliding walls arranged on both sides of the stop groove along the sliding direction of the steel ball. Adjacent arc-shaped sliding walls are connected to form arc-shaped slope teeth, so that the steel ball can perform elastic rolling motion on the stop groove and arc-shaped slope teeth along the movement trajectory to achieve contact sliding.

5. The magnetically coupled axial motion mechanism for instruments and meters according to claim 4, characterized in that, A first positioning hole is provided through the first magnetic coupler, and the first magnetic coupler is fitted onto the first positioning post through the first positioning hole; The first magnetic coupler is also provided with at least three sets of first limiting holes; The knob body is provided with a first limiting post for limiting assembly with the first limiting hole, so as to realize the synchronous rotation of the knob body and the first magnetic coupler.

6. The magnetically coupled axial motion mechanism for instruments and meters according to claim 2, characterized in that, A second positioning post is provided extending from the second surface. The second positioning post and the first positioning post are on the same central axis. The turntable device is rotatably mounted on the second positioning post so that the turntable assembly can rotate synchronously with the elastic positioning assembly through magnetic coupling.

7. The magnetically coupled axial motion mechanism for instruments and meters according to claim 6, characterized in that, The turntable assembly includes a turntable body, the turntable body including a third surface and a fourth surface disposed opposite to each other; A second coupler mounting groove is provided on the third surface, and the second magnetic coupler is disposed in the second coupler mounting groove and is fitted to the second surface; An electrical connection structure is provided on the fourth surface to achieve gear switching through non-contact transmission.

8. The magnetically coupled axial motion mechanism for instruments and meters according to claim 7, characterized in that, The mechanism also includes a PCB, through which a third positioning hole is provided, and on which a blade disc circuit is provided; A third positioning post is provided extending from the fourth surface. The third positioning post and the second positioning post are on the same central axis. The third positioning post is inserted into the third positioning hole so that when the turntable body rotates, the electrical connection structure is electrically connected to the cutter head circuit to realize gear switching.

9. The magnetically coupled axial motion mechanism for instruments and meters according to claim 8, characterized in that, A second positioning hole is provided through the second magnetic coupler, and the second magnetic coupler is fitted onto the second positioning post through the second positioning hole; The second magnetic coupler is also provided with at least three sets of second limiting holes; The turntable body is provided with a second limiting post for limiting assembly with the second limiting hole, so as to realize the synchronous rotation of the turntable body and the second magnetic coupler.

10. An instrument, characterized in that, The instrument includes the magnetic coupling axial motion mechanism for instruments as described in any one of claims 1 to 9.

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