CN113607263B - Vibration measuring assembly with accurate positioning device for height direction movement sensing part - Google Patents

Abstract

The invention discloses a vibration measuring assembly with a height direction movement sensing part accurate positioning device, which comprises: a body having a reference plane and an orthogonal setting plane orthogonal to the reference plane, wherein the orthogonal setting plane has a plurality of insertion ports which are far away from each other, and the space between the insertion ports just corresponds to the overall dimension of the height direction motion sensing piece; electrically welding the circuit board of the height direction motion sensing piece; a positioning device, comprising: a plurality of fixing units, each of which has a shape complementary to the insertion ports and a size not smaller than the corresponding insertion port, for being press-coupled to the corresponding insertion port; and a tightening base body extending out of the fixing unit and having a butting face close to the body and a back face opposite to the butting face, wherein the butting face is provided with a butting part for butting and fixing the circuit board and the height direction motion sensing piece between the tightening base body and the body.

Description

Vibration measurement assembly with precise positioning device for height-direction motion sensing element

technical field

The invention relates to a vibration measuring assembly, in particular to a vibration measuring assembly with a precise positioning device for a height-direction motion sensing element.

Background technique

Any equipment that rotates around a center can be called rotating equipment, ranging from fans, motors, pumps, and compressors commonly found in factories to wind turbine shafts and high-speed MRT train axles. Because any rotating equipment cannot be in a perfect true circle, there will be eccentric rotation of different degrees during operation, which will generate some reciprocating force and cause the rotating equipment to vibrate. Therefore, the vibration generated by the above-mentioned actions can be monitored. behavior to determine the condition of the above-mentioned rotating equipment. For rail vehicle applications, the minimum vibration of 1mG needs to be monitored regularly. In the past, the transmission shaft of rail vehicles has broken. In the past, the aging threshold of components such as transmission shaft or gearbox was limited to vibration of 30 to 50mG. That is, the above equipment must be replaced in advance of failure or damage to avoid financial loss or personal injury.

The flight ability of an aircraft comes from the pressure difference caused by the difference in the speed of the air flowing through the lower surface and the upper surface of the wing above a critical flight speed, to provide a rising buoyancy greater than the weight of the aircraft so that the aircraft can take off , However, the airflow in the natural environment is mostly turbulent, so the velocity distribution of the airflow is very uneven, so the above-mentioned pressure difference will change from time to time, so the rising buoyancy provided to the wing also changes from time to time, causing the wing to vibrate from time to time. This kind of vibration directly It has an impact on the service life of the wing. Therefore, monitoring the vibration of the wing from time to time to detect the deterioration of the wing in advance and repair it in advance to avoid the loss of life and property caused by a major air accident is the most important issue of aviation safety. .

In addition, the convenience of transportation provided by bridges accelerates the communication between people and promotes the development of civilization. Because the structure of bridges is not a perfect rigid body, in addition to a certain load limit, the design must be able to withstand the passing of people, vehicles and various Vibration caused by natural disasters and man-made disasters, but the construction materials of bridges have their lifespan and the structure will deteriorate year by year, which will cause doubts about traffic safety. Therefore, it is also necessary to conduct real-time vibration monitoring of bridges to detect structural problems in advance. Repair or evaluate demolition and reconstruction. And avoid the loss of human life and financial loss caused by bridge collapse.

The current vibration monitoring is mainly to set the vibration sensing element on the subject to be monitored over time, and then receive the vibration signal returned by the vibration sensing element, filter and calculate the monitoring data, and then provide professional technicians for judgment. The measurement capability of a sensing element is mainly defined by the precision and accuracy of its measurement data. The price of vibration sensing elements with different levels of precision and accuracy is very different. Instruments are constantly being developed and manufactured, and the requirements for the precision and accuracy of vibration components in the market are getting higher and higher, and the demand for high-precision and high-accuracy vibration sensing components in the market is also increasing.

As shown in FIG. 7 , for the three-axis vibration sensing element 9, an X-axis sensing chip 94 is generally disposed on a circuit board 92 to sense the vibration component in the X-axis direction, and the Y-axis is disposed on the same plane. The axis sensing chip 95 is used to sense the vibration component in the Y-axis direction, and then a planarization layer 96 is arranged on the X-axis sensing chip 94 and the Y-axis sensing chip 95 , and Z-axis sensing is arranged on the planarization layer 96 The chip 97 senses the vibration component in the Z-axis direction. However, generally, for example, the three-dimensional vibration sensing in a smart phone needs to save the height on the one hand, and save the cost on the other hand, and even the sensor chip in the Z-axis direction is simply stacked on the X-axis sensor chip 94 and the Y-axis sensor. above the test chip 95 . In this way, it is difficult to be completely level due to the height tolerance. Therefore, the Z-axis sensor chip 97 is prone to tilt, so the measurement accuracy of the Z-axis direction is usually not good. Fortunately, smart phones have three-dimensional precision requirements. It is not high, so the above problems will not occur, but if a chip set with a similar structure is installed in the above environment, it will inevitably bring considerable risks.

In addition, the accurate range of the output signal of the triaxial vibration sensor manufactured by Vibrasens can reach 100mV/G. The above explains that the precision of the vibration sensing element is determined by the sensing performance of the sensing module used therein, and the accuracy is determined by the assembly mechanism and process quality of assembling the sensing module into the vibration sensing element, even if A high-precision sensing module is used to manufacture the vibration sensing element, but if the mechanism is not properly designed, or the vertical and horizontal deflections occur when the sensing chip is installed on the sensing module during the manufacturing process, it will still cause the height axis direction. The component deviation of the measurement data and the measurement data in the horizontal axis direction loses the accuracy, and also reduces the number of reliable digits of the measurement data and reduces the precision.

According to the current technical level, the precision machining of general mechanical components can be accurate to, for example, one (0.01mm), so that the vertical Z-direction structure and the X-Y plane are well perpendicular, but when connecting the circuit board with the Z-axis vibration sensor installed In the process of reaching the base structure in the Z-axis direction, even if the screw rotation is only slightly skewed, or the amount of solder is uneven, the vibration sensor in the Z-axis direction will be tilted, skewed or height deviation, and the error in this case is often greater. than the error of precision machining. That is to say, even if a high-precision Z-axis vibration sensor is used, and high-precision machining is used in the manufacture of the base, the intended effect cannot be achieved when actually measuring the vibration in the Z-axis direction, and there is only high precision. components, but loses accuracy at larger orders of magnitude.

In addition, when monitoring the vibration of a large body, it is usually necessary to use multiple vibration sensing elements at the same time. The above-mentioned mechanism design and assembly and manufacturing problems will lead to inconsistencies in the accuracy and precision of each vibration sensing element. Usually, the user must Each vibration sensing element undergoes a tedious calibration procedure, and the vibration data measured by multiple vibration sensing elements must also take the least significant number of digits for calculation processing and subsequent analysis, which reduces the accuracy of the vibration sensing element again. and precision.

Therefore, how to reduce the influence of manufacturing and assembly offset by means of a perfect and simple mechanism design to improve the accuracy of the vibration sensing element is the purpose of the present invention. In particular, such a structure design cannot cause a sharp increase in cost, and cannot affect the yield and efficiency of assembly.

SUMMARY OF THE INVENTION

In view of the above-mentioned deficiencies of the prior art, according to the embodiments of the present invention, it is desirable to provide a vibration measuring assembly with an accurate positioning device for a motion sensing member in a height direction, aiming to achieve the following purposes of the invention: (1) It can provide Precise positioning to reduce deviations in the manufacturing and assembly process, thereby improving the accuracy of vibration measurement components; (2) due to the improved accuracy, to ensure that the precision of the vibration sensing components can show its power, allowing vibration The measurement value is more sensitive and reliable; (3) The production yield is improved by the simple assembly design.

According to an embodiment, the present invention provides a vibration measuring assembly with a precise positioning device for a height-direction motion sensing element, comprising a body having at least a reference plane and an orthogonal setting plane orthogonal to the reference plane. A plurality of insertion ports that are far away from each other are formed on the orthogonal setting surface, and a distance corresponding to the outer dimension of the height-direction motion sensing element is formed between the foregoing insertion ports; at least one circuit is electrically welded to the height-direction motion sensing element A board; and a positioning device, comprising: a plurality of fixing units whose shapes are complementary to the above-mentioned insertion ports respectively and whose size is not smaller than the above-mentioned corresponding insertion ports, respectively corresponding to the above-mentioned insertion ports and tightly coupled to the above-mentioned corresponding insertion ports; and a The pressing base extending out of the fixing unit has an abutting surface close to the body and a back surface opposite to the abutting surface, and at least one abutting portion is formed on the abutting surface, so that the fixing units are respectively tightly coupled to the abutting surfaces. When corresponding to the insertion port, the abutting portion abuts and holds the circuit board together with the height-direction motion sensing element between the pressing base and the body.

Compared with the prior art, in the present invention, the positioning device is tightly combined with the insertion port on the body, so that the height-direction motion sensing element can be accurately positioned in all dimensions, and by the small size of the mechanical element in each dimension. Control the error to form a precisely configured Z-axis vibration measurement component to reduce deviations in the manufacturing and assembly process; allow the Z-axis vibration measurement to fully and faithfully reflect the actual vibration situation, fully presenting the components in the original specification. precision. Of course, those skilled in the art can easily understand that the present invention is not limited to the structural design in the Z-axis direction, but because the general measurement takes the plane in the X-Y direction as the reference plane of the structure, the X-axis or the Y-axis The directional vibration measuring assembly is relatively easy to install, but the present invention does not exclude a three-dimensional vibration measuring assembly or any two-dimensional measuring assembly having both an X-axis, a Y-axis and a Z-axis.

In addition, the present invention forms the vibration measuring component by means of the fixed unit and the insertion port on the main body being tightly combined, so that the height direction motion sensing element is mechanically and precisely positioned to form the vibration measuring component. On the one hand, the combined structure is simple and the operation difficulty is low, so that The yield rate is improved, and it can provide precise positioning in the height direction to reduce the deviation during the manufacturing and assembly process, thereby reducing the measurement accuracy of the vibration measurement component, which not only fully demonstrates the original precision effect of the vibration sensor , and multiple vibration measurement components can be used simultaneously without reducing the overall accuracy.

Description of drawings

FIG. 1 is a perspective view of a first preferred embodiment of a vibration measuring assembly with a precise positioning device for a height-direction motion sensing element according to the present invention.

FIG. 2 is a schematic diagram of the body of the first preferred embodiment of the vibration measuring assembly with the high-direction motion sensing element precise positioning device of the present invention.

FIG. 3 is a schematic side view of the first preferred embodiment of the vibration measuring assembly with the precise positioning device for the height-direction motion sensing element in the installation and application of a high-speed railway train according to the present invention.

4 is a schematic exploded cross-sectional view along the section line A-A in FIG. 1 in the first preferred embodiment of the vibration measuring assembly with the precise positioning device for the height-direction motion sensing element of the present invention.

FIG. 5 is a schematic exploded perspective view of a second preferred embodiment of the vibration measuring assembly with the high-direction motion sensing element precise positioning device of the present invention.

FIG. 6 is an assembled side view of a second preferred embodiment of the vibration measuring assembly with the precise positioning device for the height-direction motion sensing element according to the present invention.

FIG. 7 is a schematic diagram of a prior art three-axis vibration sensing element.

Among them: 1 is the vibration measurement component; 10, 10' is the body; 12, 12' is the reference plane; 14, 14' is the orthogonal setting surface; 142 is the orthogonal compensation positioning port; 1422 is the orthogonal compensation surface; 16 , 16' are insertion ports; 2, 2' are height-direction motion sensing elements; 22, 22', 92 are circuit boards; 3, 3' are positioning devices; 32, 32' are fixed units; 34, 34' are 342 is the butting surface; 344 is the back side; 346, 346' are the abutting parts; 347' is the contour bump; 36' is the accommodation space; 4 is the high-speed railway train; 42 is the axle; 5 is the positive 54 is an orthogonal mounting surface; 52 is an embedded surface; 56 is a through hole; 9 is a three-axis vibration sensing component; 94 is an X-axis sensing chip; 95 is a Y-axis sensing chip; 96 is a planarization layer ; 97 is the Z-axis sensing chip; A-A is the section line; S is the spacing; θ1 is the oblique angle; θ2 is the complementary angle.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. These embodiments should be understood as only for illustrating the present invention and not for limiting the protection scope of the present invention. After reading the contents described in the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

first preferred embodiment

As shown in FIG. 1 to FIG. 2 , in a vibration measuring assembly provided with a precise positioning device for a height-direction motion sensing element according to a first preferred embodiment of the present invention, the vibration measuring assembly with the precise positioning device for the height-direction motion sensing element 2 In the vibration measuring assembly 1, the height direction motion sensing element 2 is, for example, a MEMS gravity sensing integrated circuit, and the vibration measuring assembly 1 includes: a body 10 exemplified as an integrally formed aluminum alloy casing, a height direction motion sensing element 2. The circuit board 22 of the above-mentioned height-direction motion sensing element 2 is electrically welded with solder, for example, a flexible circuit board designed and customized according to the internal space of the main body 10, and it is exemplified as being tightly coupled with the main body 10 by inserting a plug , so as to precisely position the height-direction motion sensing element 2 on the positioning device 3 on the main body 10 . The section line A-A in FIG. 1 is for the subsequent generation of a section view to further illustrate how the positioning device 3 precisely positions the height-direction motion sensing element 2 on the main body 10 .

By means of precision machining, the body 10 has a reference plane 12 parallel to the horizontal plane, for example, and an orthogonal setting surface 14 such as a vertical wall surface perpendicular to the reference plane 12. The orthogonal setting plane 14 is formed with two sizes. The insertion ports 16 that are not asymmetrical to each other and are separated from each other by the recesses with the height-direction motion sensing element 2 are separated from each other, wherein the distance S formed between the two insertion ports 16 in this embodiment, It just corresponds to the distance between the outer dimensions of the motion sensing element 2 in the height direction.

Please refer to FIG. 3 , the vibration measuring assembly 1 further includes a set of lateral motion sensing assemblies (not shown) disposed on the reference plane and orthogonal to the height direction motion sensing member, and a set of lateral motion sensing assemblies (not shown) disposed on the reference plane A longitudinal motion sensing element (not shown) on the surface and orthogonal to the height direction motion sensing element and the above lateral motion sensing element is used to monitor the vibration of the axle 42 of a high-speed railway train 4 . Therefore, three independent vibration sensing components measure three-dimensional vibrations, respectively, and provide them to, for example, subsequent analysis devices, thereby sensing multiple vibrations of, for example, drive shafts, speed reducers, and the like. Of course, those skilled in the art can easily understand that in situations such as high-speed railway carriages, multiple sets of vibration measuring components may also be provided, but not limited to one set.

FIG. 4 is a schematic cross-sectional view along the section line A-A in FIG. 1 , please refer to FIG. 4 , the positioning device 3 has two insertion ports 16 on the same center line that are complementary in shape to the above-mentioned two insertion ports 16 , and the size is not smaller than the above-mentioned corresponding The fixing unit 32 of the insertion port 16, the above-mentioned two fixing units 32 are, for example, two metal cylindrical pins of different sizes, asymmetrical and easy to manufacture, for corresponding to the above-mentioned two different sizes and asymmetrical insertion. port 16. The positioning device 3 also has a pressing base 34 extending out of the fixing unit 32, which is, for example, a flat metal plate that is resistant to vibration and is not easily deformed and broken. 342 , and the back surface 344 opposite to the abutting surface 342 , at least one abutting portion 346 is formed on the abutting surface 342 , which is exemplified as a high-straightness plane.

The vibration measuring assembly 1 also has an orthogonal auxiliary unit 5 exemplified as a cast metal block, which has an orthogonal mounting surface 54 facing the height-direction motion sensing member 2, and an embedded surface opposite to the orthogonal mounting surface 54. 52. The embedded surface 52 has a draft angle θ1 of, for example, 0.1° to 0.3° facing the reference surface 12, so as to be easily demolded during mass production using a casting technique, and then the orthogonal mounting surface 54 is precisely machined by a CNC milling machine, It has a high verticality with respect to the reference plane 12 . The orthogonal setting surface 14 is formed with an orthogonal compensation positioning port 142 relative to the orthogonal auxiliary unit 5 . The groove, the orthogonal compensation positioning port 142 has an orthogonal compensation surface 1422 facing the above-mentioned height direction motion sensing element 2, which has a complementary angle θ2 which is complementary to the above-mentioned oblique angle θ1, for the above-mentioned orthogonal auxiliary unit 5 to be embedded in the positive direction. When the orthogonal compensation positioning port 142 on the surface 14 is intersected and combined with the main body 10 , the orthogonal mounting surface 54 is maintained to be orthogonal to the reference surface 12 .

The above-mentioned orthogonal auxiliary unit 5 further has two through holes 56 corresponding to the above-mentioned insertion port 16 and the fixing unit 32 on the same center line, respectively, for the two fixing units 32 to penetrate through the corresponding through-holes 56 respectively and be tightly coupled to the respective corresponding through holes 56 . the plug-in port 16. Because a flexible circuit board is used in this embodiment, and the size of the two other positioning devices 3 is slightly smaller than the corresponding insertion port 16 and the corresponding through hole 56 from the tip, and then gradually increases to be slightly larger than the corresponding insertion port The size of 16 is defined as the size of the positioning device 3 which is not smaller than the size of the insertion port 16 because the size of the outer contour of the positioning device 3 to be inserted will be equal to or slightly larger than the insertion port.

The positioning device 3 can be easily pressurized to pierce the flexible circuit board 22 of the present embodiment and be inserted into the corresponding insertion port 16 in a tightly coupled manner. At this time, the abutting portion 346 and the height-direction motion sensing element 2 In between, a strong frictional force is generated due to the pressure of the pressing and binding, whereby the circuit board 22 and the height-direction motion sensing element 2 are abutted and held between the pressing base 34 and the above-mentioned body 10, and the height-direction motion is sensed. The member 2 is maintained in close contact with the reference plane 12 that is normal to it.

In addition, because the distance between the two fixing units 32 corresponds to the distance S between the two insertion ports 16 , that is, it just corresponds to the outer dimension of the height-direction motion sensing member 2 . Therefore, after the above-mentioned combination is completed, the positioning device 3 will just clamp the height-direction motion sensing element 2, even if the height-direction motion sensing element 2 is soldered to the circuit board 22, the positioning is deviated, or the sense of height direction motion is caused by soldering. When the position of the measuring element 2 is shifted, the positioning device 3 can still precisely locate the height-direction motion sensing element 2 at a predetermined position, thereby providing highly accurate vibration measurement information, and achieving the purpose of the present invention. In the inventor's experiment, since the precision machining error can be limited to 1 μm, compared with the size of the height-direction motion sensing element, the precision deviation caused by the installation and fixing is extremely small. 1 The vibration measurement accuracy in the height direction can reach 1mG/V, and the vibration resistance performance of the height direction motion sensing element 2 is greatly improved due to the fact that the height direction motion sensing element 2 is clamped by the positioning device 3, so it further prolongs its vibration resistance in high vibration. Measure lifetime and reliability in the environment.

In this embodiment, through the above-mentioned two fixing units whose shapes are complementary to the insertion ports and whose size is not smaller than the corresponding insertion ports, the flexible circuit board is pierced through the through holes of the orthogonal auxiliary unit and the insertion ports on the main body. By pressing together, the height-direction motion sensing element is precisely positioned to form a vibration measurement assembly, which can provide precise positioning in the height direction to reduce deviations in the manufacturing and assembly process, and measure the precision and accuracy of the vibration measurement assembly. The combination of the quadrature auxiliary unit and the quadrature compensation positioning port can reduce the processing time of each vibration measurement component on the precision CNC lathe or milling machine, which is beneficial to reduce the processing cost and improve the production capacity. In addition, such a two-piece type The structure also helps to reduce the cost of repair and replacement and improve the yield.

In this embodiment, after the clamping is done properly, the circuit on the circuit board 22 and the external circuit will be further connected or welded by wire bonding, or even simply pressed, and the inside of the five-sided hollow structure in the drawing will be injected. The glue is cured, so that all components and structures are completely fixed relative to each other, on the one hand, it maintains a good accurate positioning effect, and on the other hand, it can prevent dust, moisture or acid and alkali erosion in harsh environments.

In this embodiment, the vibration measuring component 1 is composed of a height direction (Z axis) motion sensing element, a lateral direction (X axis) motion sensing element and a longitudinal direction (Y axis) motion sensing element. Those skilled in the art can easily infer that even if the three-dimensional measurement is not integrated, the height-direction motion sensing element can be independently assembled into a height-direction vibration measuring assembly, and the horizontal motion sensing element and the longitudinal direction motion sensing element can be separately arranged. The two-dimensional vibration measuring assembly composed of the motion sensing element constitutes a quasi-positioning three-dimensional vibration measuring assembly, which does not hinder the implementation of this case.

Second Preferred Embodiment

The second preferred embodiment of the present invention is described below. The same parts of this embodiment as those of the previous preferred embodiment will not be repeated here. Similar components also use similar names and labels, and only the differences are described. Please refer to FIG. 5 to FIG. 6 , in this embodiment, the body 10 ′ is an aluminum alloy shell formed by casting a mold, and the orthogonal setting surface 14 ′ on the main body 10 ′ has four elongated grooves. The insertion port 16', and the four insertion ports 16' are connected to each other to form an annular groove, and the four fixing units 32' corresponding to the four insertion ports 16' on the positioning device 3' are all elongated walls. The fixing units 32' also form an accommodating space 36' enclosed by an annular wall for accommodating the height-direction motion sensing element 2'. The height of the fixing unit 32' is greater than the thickness of the height-direction motion sensing member 2', and the height of the fixing unit 32' is not greater than the sum of the depth of the insertion port 16' and the thickness of the height-direction motion sensing member 2'.

Different from the previous preferred embodiment, the pressing base 34' in this embodiment is clamped by four fixing units 32' to clamp the height-direction motion sensing member 2' and the circuit board 22', and are directly and respectively inserted into the base 34'. The corresponding insertion port 16 ′ does not need to pass through the orthogonal auxiliary unit, and maintains the height-direction motion sensing element 2 ′ orthogonal to the reference plane 12 ′, thus having the additional advantage of simple structure and easy manufacturing. In addition, since the positioning device 3' completely encloses the height-direction motion sensing member 2' in the accommodating space 36' through the four fixing units 32', it can provide better protection, and because the four fixing units 32' It also just corresponds to the outer dimension of the height-direction motion sensing element 2', so after the positioning device 3' completes the above combination, it will just provide a better two-dimensional dimension in the length and width directions of the height-direction motion sensing element 2'. The clamping force, even if the positioning of the circuit board 22' is deviated, or the position of the height-direction motion sensing element 2' is shifted due to soldering, the height-direction motion sensing element 2' can still be fixed at a precisely positioned position, thereby providing high Accurate vibration measurement information.

Because the size of the fixing units 32 ′ in this embodiment is not smaller than the insertion port 16 ′, when the four fixing units 32 ′ clamp the height direction motion sensing element 2 ′ and the circuit board 22 ′, and are respectively inserted into the corresponding insertion ports 16 ′ ', the abutting portion 346' of the pressing base 34' also has at least three bumps 347' of equal height, so as to abut and hold the circuit board 22' and the height-direction motion sensing member 2' on the pressing Between the base body 34 ′ and the orthogonal setting surface 14 ′ of the body 10 ′, the height direction motion sensing element 2 ′ and the orthogonal setting surface 14 ′ are also kept orthogonal to the reference plane 12 ′, so the positioning device 3 ′ is completed After the above combination, an additional one-dimensional clamping force will be provided in the thickness direction of the motion sensing member 2' in the height direction.

The positioning device of the present embodiment provides three-dimensional clamping such as length, width and thickness for the height-direction motion sensing element through the tight coupling of the fixing unit and the insertion port, and the abutment between the abutting portion and the height-direction motion sensing element. It is precisely positioned on the vibration measuring component, so that the vibration measuring component of this embodiment has good accuracy, so the overall accuracy and precision will not be reduced when multiple vibration measuring components are used in combination at the same time , to achieve another object of the present invention. In addition, in addition to further saving the setup cost of the orthogonal auxiliary unit, it can also provide a more complete full-coverage protection for the height-direction motion sensing element.

To sum up, after the positioning device of the present invention is combined with the main body, it will just clamp the height-direction motion sensing element. Even if there is a positioning deviation of the circuit board or the position of the height-direction motion sensing element drifts during welding, it can still be The height-direction motion sensing element is precisely positioned to form a vibration measurement component that provides high-accuracy vibration measurement information, and further prolongs its service life in a high-vibration measurement environment. The present invention precisely positions the height-direction motion sensing component in the height direction to keep Orthogonal to the reference plane to reduce the influence of deviations in the manufacturing and assembly process on the precision and accuracy of the measurement information of the vibration measurement component.

Of course, the fixing units and the corresponding insertion ports in the above-mentioned preferred embodiments can be interchanged with each other according to the needs of each embodiment and are not limited, and the implementation of the abutting portion can also be interchanged with each other depending on the needs of the product , without prejudice to the implementation of this case.

Claims (4)

1. A vibration measurement assembly with a precise positioning device for a height direction movement sensing part is characterized by comprising

A body having at least a reference surface and an orthogonal setting surface orthogonal to the reference surface, wherein a plurality of insertion ports are formed on the orthogonal setting surface, and a space corresponding to the overall dimension of the height direction motion sensing component is formed between the insertion ports;

at least one circuit board electrically soldered with the height direction motion sensing member;

an orthogonal auxiliary unit interposed between the height direction motion sensing member and the body, the orthogonal auxiliary unit having an orthogonal mounting surface facing the height direction motion sensing member and an insertion surface opposite to the orthogonal mounting surface; and

a positioning device includes:

plural fixing units, which are complementary to the insertion ports and have a size not smaller than the corresponding insertion ports, respectively, for being respectively corresponding to the insertion ports and being tightly combined to the corresponding insertion ports; and

A pressing base body extending out of the fixing unit, the pressing base body is a plane plate and is provided with a butting surface close to the body and a back surface opposite to the butting surface, at least one butting part is formed on the butting surface, so that when the fixing unit is respectively and tightly combined to the corresponding insertion ports, the butting part enables the circuit board and the height direction motion sensing piece to be butted and fixed between the pressing base body and the body;

an orthogonal compensation positioning port is further formed on the orthogonal installation surface for the orthogonal auxiliary unit to be installed on the orthogonal installation surface and combined with the body;

the embedding surface has an oblique angle, and an orthogonal compensation surface which is opposite to the embedding surface and has a complementary angle with the oblique angle is formed on the orthogonal compensation positioning port, so that the orthogonal auxiliary unit is combined with the orthogonal compensation positioning port and the body through the embedding surface and the orthogonal compensation surface, and the orthogonal installation surface is orthogonal to the reference surface.

2. The vibration measuring assembly with the precise positioning device for the height direction movement sensor as claimed in claim 1, wherein the orthogonal auxiliary unit has a plurality of through holes corresponding to the insertion port and the fixing unit for the fixing unit to pass through to be tightly combined with the insertion port.

3. The vibration measuring assembly with the precise positioning device for the height direction movement sensor as claimed in claim 1, wherein the plurality of insertion ports are different in size and are not symmetrical to each other.

4. The assembly of claim 1, wherein the abutment portion comprises at least 3 bumps of equal height.

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