Multifunctional handheld tachometer

Abstract

The utility model is suitable for the technical field of rotating speed measuring tools, and provides a multifunctional handheld tachometer, which comprises a handheld tachometer body with a shell, a Hall sensing element is arranged in the shell, the shell is provided with a mounting port, and the shell is provided with a plurality of through holes for heat dissipation; and the barrel body is installed on the installation opening in a sliding mode, a plurality of positioning grooves are formed in the barrel body, and one side of the barrel body is fixedly connected with the Hall sensing element. The multifunctional handheld tachometer provided by the scheme solves the technical problems that when an existing handheld tachometer is used, the Hall sensing element cannot be well cooled, and the faulted or damaged Hall sensing element is difficult to take out for maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotation speed measuring tools, in particular to a multifunctional handheld tachometer. Background Art

[0002] A tachometer is an instrument used to measure the rotational speed of an object. It is usually in direct contact with the rotating target to be detected and realizes the rotational speed of various rotating objects through transmission rotation.

[0003] After searching, a handheld tachometer with the authorization announcement number CN217561535U is found, and its structure includes a rotating shaft, a Hall sensing element, a magnet, a test wheel, a control module and a shell; the control module, the Hall sensing element and the magnet are installed in the shell, and the Hall sensing element and the magnet are close to each other; the Hall sensing element is connected to the control module; the rotating shaft is rotatably arranged in the shell, and one end thereof is installed on an end face of the magnet, the magnet is arranged directly above the Hall sensing element, and the other end face of the magnet faces the Hall sensing element; the other end of the rotating shaft extends out of the top of the shell, and the test wheel is detachably arranged on the top of the shell and is transmission-connected to the other end of the rotating shaft; the test wheel adopts a V-groove wheel or a flat wheel; its practical new type has the advantage of easy replacement of the test wheel type.

[0004] However, there are still some problems in the use of the above solution. First, it cannot dissipate heat for the Hall sensor element used to measure the rotational speed well, so its performance and service life will be greatly affected when used in a high temperature environment. Second, when the Hall sensor element fails or is damaged, it is inconvenient to remove it from the casing for maintenance, and maintenance is difficult. Utility Model Content

[0005] In order to solve the technical problem that the existing handheld tachometer cannot dissipate heat for the Hall sensor element well during use and is difficult to remove and repair the faulty or damaged Hall sensor element, the utility model provides a multifunctional handheld tachometer.

[0006] The present utility model is implemented as follows: a multifunctional handheld tachometer comprises: a handheld tachometer body including a shell, a Hall sensor element is arranged inside the shell, a mounting port is provided on the shell, and a plurality of through holes for heat dissipation are provided on the shell; a cylinder slidably mounted on the mounting port, the cylinder is provided with a plurality of positioning grooves, and one side of the cylinder is fixedly connected to the Hall sensor element; a baffle fixedly mounted on the cylinder, the baffle is provided with a vent for air intake; a blower mechanism mounted on the cylinder for heat dissipation; and a plurality of disassembly mechanisms assembled on the shell for fixing the cylinder.

[0007] Preferably, the air blowing mechanism comprises: a fan fixedly mounted on the inner wall of the cylinder; a plurality of through-tubes fixedly mounted on the cylinder, and a blowing hood fixedly mounted on each of the through-tubes.

[0008] Preferably, the disassembly mechanism includes: a shell fixedly mounted on the outer shell, a plurality of springs fixedly mounted on the inner wall of the shell; a pressure plate fixedly mounted on the plurality of springs, a positioning block fixedly mounted on the pressure plate, the positioning block being adapted to any one of the positioning grooves; a pull rod slidably mounted on the shell, one end of the pull rod being fixedly connected to the pressure plate.

[0009] Preferably, a plurality of limiting holes are formed on the baffle, and limiting blocks are slidably mounted on the plurality of limiting holes, and one side of the plurality of limiting blocks is fixedly connected to the outer wall of the housing.

[0010] Preferably, a dustproof net for preventing dust is fixedly installed on the inner wall of the ventilation opening, and the dustproof net is made of stainless steel.

[0011] Preferably, a filter is fixedly mounted on the inner wall of the shell, and the filter is arranged corresponding to the plurality of through holes.

[0012] Preferably, a first handle is fixedly mounted on one end of each of the pull rods, and a first soft cover is fixedly mounted on each of the first handles.

[0013] Preferably, a second handle is fixedly mounted on one side of the baffle, and a second soft cover is fixedly mounted on the second handle.

[0014] Compared with related technologies, the multifunctional handheld tachometer provided by the present invention has the following beneficial effects:

[0015] This solution constitutes the handheld tachometer body in the prior art through an outer shell. After improvement, the external gas can be sucked into the cylinder from the vent through the blower mechanism, and then discharged to the surface of the Hall sensing element. Then, the used gas will be discharged from multiple through holes with heat, which can effectively improve the heat dissipation speed of the Hall sensing element, and can ensure the performance of the handheld tachometer during use, which is beneficial to improving the service life. The cylinder can be quickly fixed and quickly released through the disassembly mechanism. After the fixation is released, the Hall sensing element can be removed by simply pulling the cylinder out of the installation port, which brings convenience to the maintenance and inspection of the Hall sensing element. The operation is relatively convenient and quick. The dustproof net can prevent external impurities from entering the cylinder from the vent, and the filter can prevent external impurities from entering the shell from multiple through holes, which can ensure the cleanliness of the inside of the handheld tachometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a structural diagram of a multifunctional handheld tachometer provided by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG;

[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part B shown in

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the central through pipe and the blowing hood of the utility model.

[0020] Figure numerals: 1. outer shell; 2. Hall sensor element; 3. cylinder; 4. baffle; 5. fan; 6. through pipe; 7. air blow hood; 8. shell; 9. spring; 10. pressure plate; 11. positioning block; 12. pull rod; 13. limit block; 14. dust net; 15. filter. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a multifunctional handheld tachometer. Figure 1-4As shown, the multifunctional handheld tachometer includes: a handheld tachometer body including a shell 1, a Hall sensor element 2 is arranged inside the shell 1, a mounting port is provided on the shell 1, and a plurality of through holes for heat dissipation are provided on the shell 1; a cylinder 3 is slidably mounted on the mounting port, a plurality of positioning grooves are provided on the cylinder 3, and one side of the cylinder 3 is fixedly connected to the Hall sensor element 2; a baffle 4 is fixedly mounted on the cylinder 3, and a ventilation port for air intake is provided on the baffle 4; a blowing mechanism installed on the cylinder 3 for heat dissipation; and a plurality of disassembly mechanisms assembled on the shell 1 for fixing the cylinder 3.

[0024] In the scheme, the handheld tachometer body including the shell 1 is the existing technology. When it is used, the staff holds the handheld tachometer and fixes the test wheel on its top to the rotating object to be measured. Then, when the test wheel is driven by the rotating object, its rotation also drives the magnet connected to the rotating shaft to rotate synchronously. The surface of the magnet generates a rotating magnetic field. The magnetic Hall sensing element 2 can sense the change in the magnetic field and output a pulse. The pulse is then captured by the control module, and the speed and linear speed of the rotating object are calculated according to relevant rules. After the improvement of this scheme, during the operation of the Hall sensing element 2, the air blowing mechanism needs to be started, and the air blowing mechanism will suck the external air from the vent The gas enters the cylinder 3 and is finally discharged to the surface of the Hall sensing element 2, blowing and cooling the Hall sensing element 2. Finally, the gas will be discharged from multiple through holes with the heat, which can effectively improve the heat dissipation speed of the Hall sensing element 2, and can ensure the performance of the handheld tachometer during use, which is beneficial to improving the service life. When the Hall sensing element 2 needs to be repaired or inspected, the disassembly mechanism can be used to quickly release the fixation of the cylinder 3. After release, the Hall sensing element 2 can be removed by simply pulling the cylinder 3 out of the installation port, which brings convenience to the repair and inspection of the Hall sensing element 2, and the operation is relatively convenient and quick.

[0025] In a further preferred embodiment of the present invention, the blowing mechanism includes: a fan 5 fixedly mounted on the inner wall of the cylinder 3; a plurality of through pipes 6 fixedly mounted on the cylinder 3, and a blowing hood 7 fixedly mounted on each of the plurality of through pipes 6.

[0026] In this embodiment, the blower mechanism is used to dissipate heat. When in use, the fan 5 is started, and the fan 5 will suck the external air into the cylinder 3 from the vent, and then enter the multiple through pipes 6, and finally be discharged from the multiple blowing hoods 7, and the gas will be discharged to the surface of the Hall sensing element 2, and then the Hall sensing element 2 can be blown to dissipate heat. Finally, these gases will carry heat and be discharged from the multiple through holes, which can effectively improve the heat dissipation speed of the Hall sensing element 2, and can ensure the performance of the handheld tachometer during use, which is conducive to improving the service life.

[0027] In a further preferred embodiment of the present utility model, the disassembly mechanism includes: a shell 8 fixedly mounted on the outer shell 1, and a plurality of springs 9 are fixedly mounted on the inner wall of the shell 8; a pressure plate 10 fixedly mounted on the plurality of springs 9, and a positioning block 11 is fixedly mounted on the pressure plate 10, and the positioning block 11 is adapted to any one of the positioning grooves; a pull rod 12 slidably mounted on the shell 8, and one end of the pull rod 12 is fixedly connected to the pressure plate 10.

[0028] In this embodiment, the disassembly mechanism is used to fix the cylinder 3. When the Hall sensing element 2 needs to be repaired or inspected, the pull rod 12 is pulled, and the pull rod 12 drives the pressure plate 10 to move, so that the pressure plate 10 squeezes the spring 9 and drives the positioning block 11 to slowly disengage from the positioning groove on the cylinder 3. After disengagement, the cylinder 3 can be pulled out from the installation port, and the removal of the Hall sensing element 2 is completed, which brings convenience to the maintenance and inspection of the Hall sensing element 2, and the operation is relatively convenient and quick. If the pull rod 12 is released before removal, the spring 9 will push the pressure plate 10 to move through its elasticity, and the pressure plate 10 drives the positioning block 11 to move, so that the positioning block 11 is inserted into the positioning groove, so that the cylinder 3 cannot be pulled out from the installation port.

[0029] In a further preferred embodiment of the present invention, a plurality of limiting holes are opened on the baffle 4 , and limiting blocks 13 are slidably installed on the plurality of limiting holes, and one side of the plurality of limiting blocks 13 is fixedly connected to the outer wall of the shell 1 .

[0030] In this embodiment, by using a plurality of limiting holes and a plurality of limiting blocks 13 in combination, the installation position of the cylinder 3 and the baffle 4 can be effectively ensured, and the cylinder 3 can be prevented from changing its angle, causing the positioning groove to be out of the appropriate position for use.

[0031] In a further preferred embodiment of the present invention, a dustproof net 14 for preventing dust is fixedly installed on the inner wall of the vent, and the dustproof net 14 is made of stainless steel.

[0032] In this embodiment, the dustproof net 14 made of stainless steel can prevent foreign matter from entering the cylinder 3 through the ventilation opening. At the same time, the dustproof net 14 made of stainless steel has good durability and will not rust.

[0033] In a further preferred embodiment of the present invention, a filter screen 15 is fixedly mounted on the inner wall of the housing 1 , and the filter screen 15 is arranged corresponding to the plurality of through holes.

[0034] In this embodiment, the use of the filter 15 can prevent external impurities from entering the housing 1 through the multiple through holes, thereby ensuring the cleanliness of the interior of the housing 1.

[0035] In a further preferred embodiment of the present invention, a first handle is fixedly mounted on one end of each of the pull rods 12 , and a first soft cover is fixedly mounted on each of the first handles.

[0036] In this embodiment, the coordinated use of the first handle and the first soft cover enables the operator to pull the pull rod 12 more comfortably, thereby improving the operator's comfort in manual operation.

[0037] In a further preferred embodiment of the present invention, a second handle is fixedly mounted on one side of the baffle 4 , and a second soft cover is fixedly mounted on the second handle.

[0038] In this embodiment, the second handle can facilitate the operator to pull the baffle 4, and when the cylinder 3 is released, the cylinder 3 and the Hall sensing element 2 can be quickly taken out from the housing 1. The second soft cover can improve the comfort of the operator when pulling the second handle, and the use effect is better.

[0039] To sum up, compared with the relevant technology, this scheme constitutes the handheld tachometer body in the prior art through the shell 1. After improvement, the external gas can be sucked into the cylinder 3 from the vent through the blower mechanism, and then discharged to the surface of the Hall sensing element 2. Then, the used gas will carry heat and be discharged from multiple through holes, which can effectively improve the heat dissipation speed of the Hall sensing element 2, and can ensure the performance of the handheld tachometer during use, which is beneficial to improving the service life. The disassembly mechanism can quickly complete the fixation of the cylinder 3 and can also quickly release the fixation of the cylinder 3. After releasing the fixation, the Hall sensing element 2 can be removed by simply pulling the cylinder 3 out of the installation port, which brings convenience to the maintenance and inspection of the Hall sensing element 2. The operation is relatively convenient and quick. The dustproof net 14 can prevent external impurities from entering the cylinder 3 from the vent, and the filter 15 can prevent external impurities from entering the shell 1 from multiple through holes, which can ensure the cleanliness of the inside of the handheld tachometer.

[0040] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A multifunctional handheld tachometer, characterized in that: include: A handheld tachometer body comprising a housing (1), wherein a Hall sensor element (2) is provided inside the housing (1), a mounting opening is provided on the housing (1), and a plurality of through holes for heat dissipation are provided on the housing (1); A cylinder (3) is slidably mounted on the mounting opening, a plurality of positioning grooves are provided on the cylinder (3), and one side of the cylinder (3) is fixedly connected to the Hall sensor element (2); a baffle (4) fixedly mounted on the cylinder (3), wherein a vent for air intake is provided on the baffle (4); a blower mechanism mounted on the barrel (3) for dissipating heat; A plurality of disassembly mechanisms for fixing the cylinder (3) are assembled on the housing (1).

2. The multifunctional handheld tachometer according to claim 1, characterized in that: The hair dryer structure comprises: a fan (5) fixedly mounted on the inner wall of the cylinder (3); A plurality of through pipes (6) are fixedly mounted on the cylinder (3), and a blowing hood (7) is fixedly mounted on each of the plurality of through pipes (6).

3. The multifunctional handheld tachometer according to claim 1, characterized in that: The disassembly mechanism comprises: A shell (8) fixedly mounted on the outer shell (1), wherein a plurality of springs (9) are fixedly mounted on the inner wall of the shell (8); A pressure plate (10) is fixedly mounted on the plurality of springs (9), a positioning block (11) is fixedly mounted on the pressure plate (10), and the positioning block (11) is adapted to any one of the positioning grooves; A pull rod (12) is slidably mounted on the housing (8), and one end of the pull rod (12) is fixedly connected to the pressure plate (10).

4. The multifunctional handheld tachometer according to claim 1, characterized in that: The baffle (4) is provided with a plurality of limiting holes, and limiting blocks (13) are slidably mounted on the plurality of limiting holes, and one side of the plurality of limiting blocks (13) is fixedly connected to the outer wall of the housing (1).

5. The multifunctional handheld tachometer according to claim 1, characterized in that: A dustproof net (14) for preventing dust is fixedly installed on the inner wall of the ventilation opening, and the dustproof net (14) is made of stainless steel.

6. The multifunctional handheld tachometer according to claim 1, characterized in that: A filter screen (15) is fixedly mounted on the inner wall of the housing (1), and the filter screen (15) is arranged corresponding to the plurality of through holes.

7. The multifunctional handheld tachometer according to claim 3, characterized in that: A first handle is fixedly mounted on one end of each of the plurality of pull rods (12), and a first soft cover is fixedly sleeved on each of the plurality of first handles.

8. The multifunctional handheld tachometer according to claim 1, wherein: A second handle is fixedly mounted on one side of the baffle (4), and a second soft cover is fixedly mounted on the second handle.

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