Aperture measuring device

Abstract

The invention relates to the field of aperture measurement, and provides an aperture measurement device which comprises a base and at least two measurement assemblies. The measuring assemblies are located on the same cross section of the base. The measuring assembly comprises an abutting piece, an elastic piece and a conversion element. The conversion element is mounted on the base. One end of the elastic piece is connected with the abutting piece, and the other end of the elastic piece is connected with the conversion element. The extending direction of the elastic piece is parallel to the corresponding radial direction of the base. Based on the above structure, it can be guaranteed that all the abutting pieces can abut against the hole wall of the to-be-measured hole in a self-adaptive mode under the action of the corresponding elastic pieces, and therefore the risk that all the measuring assemblies conduct measurement at the same time but all the abutting pieces do not abut against the hole wall of the to-be-measured hole at the same time can be reduced, and the accuracy of measured data of all the measuring assemblies can be guaranteed. And the elastic force of the corresponding elastic piece can be measured through each conversion element, so that the aperture of the hole to be measured on the same cross section in the radial direction corresponding to each elastic piece can be obtained, and the measurement precision and the measurement efficiency of the aperture measurement device on the aperture can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of aperture measurement, and in particular, relates to an aperture measurement device. Background Art

[0002] At present, measuring instruments such as internal micrometers and vernier calipers are usually used to measure the aperture of a hole. However, in actual measurement, the existing measuring instruments have poor measurement accuracy for the aperture. Summary of the invention

[0003] The embodiment of the present application provides an aperture measurement device, which aims to solve the problem of poor aperture measurement accuracy of existing measuring instruments.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0005] In a first aspect, an aperture measurement device is provided, comprising:

[0006] Pedestal;

[0007] There are at least two measuring components, each measuring component is located on the same cross section of the base, the measuring component includes an abutment, an elastic component and a conversion element, the conversion element is installed on the base, one end of the elastic component is connected to the abutment, and the other end of the elastic component is connected to the conversion element, and the extension direction of the elastic component is parallel to the corresponding radial direction of the base.

[0008] The aperture measuring device provided in the embodiment of the present application, when each measuring component enters the hole to be measured with the base, and the central axis of the base is basically parallel to the central axis of the hole to be measured, can conveniently, quickly and accurately measure the aperture of at least two radial directions of the hole to be measured on the same cross section through each measuring component located on the same cross section of the base. During this period, each measuring component can elastically abut the abutment component through the elastic component, so that the abutment component can adaptively abut against the hole wall of the hole to be measured, thereby reducing the risk of the abutment component not abutting against the hole wall of the hole to be measured, and reducing the risk of each measuring component measuring at the same time but each abutment component not abutting against the hole wall of the hole to be measured at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measuring component. On this basis, each measuring component can measure the elastic force of the elastic component reacting to the conversion element through the conversion element, and can convert the elastic force into a related electrical signal to output to the processor. Based on this, according to the calculation formula of the elastic force, and in combination with the setting of "the extension direction of the elastic member is parallel to the corresponding radial direction of the base", the processor can process the conversion data of the conversion element into the deformation amount of the corresponding elastic member in the corresponding radial direction of the base, so as to obtain the aperture of the hole to be measured in the same cross section corresponding to each elastic member in the radial direction. Based on this, the aperture measuring device can conveniently, quickly and accurately measure the aperture of the hole to be measured, and can even fit a more accurate aperture by integrating the measurement data, thereby improving the measurement accuracy and efficiency of the aperture measuring device for the aperture of the hole to be measured.

[0009] In some embodiments, a first through hole penetrates through the peripheral wall of the base, the first through holes are arranged in a one-to-one correspondence with the elastic members, and the elastic members are inserted into the corresponding first through holes; the conversion element is installed in the base.

[0010] By adopting the above scheme, a first through hole can be set on the peripheral wall of the base, and the elastic member can be inserted into the corresponding first through hole, so that the elastic member can be limited and positioned through the first through hole, and the extension direction and deformation direction of the elastic member can be constrained and guided through the first through hole, so that the installation and setting of the elastic member can meet the design, thereby ensuring and improving the installation accuracy and measurement accuracy of the measurement component. Correspondingly, the conversion element can be connected to the end of the elastic member located in the base, and the conversion element can be installed in the base, so that the conversion element can be installed in a stable position and state relative to the base. Based on this, the connection stability and connection reliability between the conversion element and the elastic member can be guaranteed and improved, so that the conversion element can play a durable and reliable measurement function. In addition, the base can also form a protective effect on the conversion element, thereby ensuring and extending the service life of the conversion element.

[0011] In some embodiments, the conversion element is penetrated by a second through hole; the measuring component includes a flexible member, the flexible member is passed through the corresponding second through hole, and one end of the flexible member is connected to the abutment member; the aperture measuring device includes a first shaft and a first rotating member, one end of the first shaft is upright on the base, and the other end of the first shaft is connected to the first rotating member; one end of the flexible member away from the abutment member is connected to the first shaft; the first rotating member is used to drive the first shaft to rotate so that the first shaft can reel in or unreel the flexible member.

[0012] By adopting the above scheme, when each measuring component is about to enter the hole to be measured with the base, the first rotating member can drive the first shaft to rotate in the positive direction to reel in the flexible member of each measuring component through the first shaft. Based on this, the flexible member can be prompted to pull the corresponding abutment member, so that the abutment member of each measuring component can move toward the side close to the corresponding elastic member at the same time, and actively "contract", so that each measuring component can smoothly enter the hole to be measured with the base. In addition, when each measuring component has entered the hole to be measured, the first rotating member can also drive the first shaft to rotate in the opposite direction to unwind the flexible member of each measuring component through the first shaft, thereby releasing the pulling force and resistance of the flexible member on the abutment member, thereby basically avoiding the flexible member from interfering with and hindering the measurement operation of each measuring component. In this way, the convenience and performance of the aperture measuring device can be effectively improved.

[0013] In some embodiments, the aperture measuring device includes a first bearing, and the first bearing is sleeved on the outer circumference of the first shaft.

[0014] By adopting the above solution, the first shaft can be supported by the first bearing sleeved on the outer circumference of the first shaft, the friction coefficient of the first shaft during rotation can be reduced, and the rotation accuracy of the first shaft can be guaranteed. Based on this, the rotation stability and smoothness of the first shaft can be guaranteed and improved.

[0015] In some embodiments, the base includes a first limiting structure for limiting the installation of the first bearing.

[0016] By adopting the above scheme, a first limiting structure can be set on the base so as to limit the installation of the first bearing through the first limiting structure. Based on this, the installation position of the first bearing relative to the base can be conveniently, effectively and reliably stabilized, so that the first bearing can stably and reliably play a supporting role on the first shaft. In addition, since the first shaft is inserted into the first bearing, when the first bearing is limitedly installed on the first limiting structure, the first shaft, especially the end of the first shaft close to the base, is also limited and positioned relative to the base, so that the installation position of the first shaft relative to the base can be conveniently, effectively and reliably stabilized without affecting the rotational freedom of the first shaft, so that the first shaft can be easily, effectively and reliably connected with the flexible parts of each measuring component, and the first shaft can be stably rotated around its axis to reliably realize the winding or unwinding of each flexible part.

[0017] In some embodiments, the aperture measuring device includes a sliding seat, a shell assembly and a driving assembly. The base is connected to one end of the sliding seat. The shell assembly is provided with a slideway. The slideway is extended along the extension direction of the shell assembly. One end of the slideway is connected to the outside. The sliding seat can be slidably mounted on the slideway. The driving assembly is mounted on the shell assembly for driving the sliding seat to slide reciprocatingly along the slideway.

[0018] By adopting the above scheme, when the base of the aperture measuring device is aligned toward the hole to be measured, the driving assembly can drive the sliding seat to move along the slide toward one side of the base, so that the sliding seat can drive the base to move synchronously in the direction close to the hole to be measured, thereby enabling the base and each measuring assembly to quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the aperture measuring device.

[0019] By adopting the above scheme, when each measuring component has entered the hole to be measured, the driving component can drive the sliding seat to move along the slideway, so that the base can move along the hole depth direction of the hole to be measured under the drive of the sliding seat, thereby driving each measuring component to reach the cross section of the hole to be measured at any hole depth, and each measuring component can be stabilized at the cross section of the hole to be measured at any hole depth, and accurately measure the aperture of the hole to be measured at the cross section. In this way, it can be ensured that the measurement range of the aperture measuring device can cover the entire hole depth of the hole to be measured, and it can be ensured that the aperture measuring device can freely adjust each measuring component to any hole depth of the hole to be measured, and measure the aperture of the hole to be measured at any hole depth. In this way, the measurement range of the aperture measuring device can be expanded, the aperture measuring device can be convenient for fitting the aperture of the hole to be measured at any hole depth, the measurement accuracy of the aperture measuring device on the aperture of the hole to be measured can be improved, and the use performance of the aperture measuring device can be improved. Furthermore, since the sliding seat has a larger moving range along the slideway, the base and each measuring component can also have a larger moving range, so that the aperture measuring device can measure the aperture of a hole with a larger hole depth, thereby expanding the measuring range of the aperture measuring device.

[0020] In some embodiments, the conversion element is penetrated by a second through hole; the measuring component includes a flexible member, the flexible member is inserted into the corresponding second through hole, and one end of the flexible member is connected to the abutment member; the aperture measuring device includes a first shaft and a first rotating member, one end of the first shaft is erected on the base, and the other end of the first shaft is connected to the first rotating member; the end of the flexible member away from the abutment member is connected to the circumferential side of the first shaft; the first rotating member is used to drive the first shaft to rotate so that the first shaft can reel in or unreel the flexible member; the aperture measuring device includes a sliding seat, a shell assembly and a driving assembly, the base is connected to one end of the sliding seat, the shell assembly is provided with a slideway, the slideway is extended along the extension direction of the shell assembly, one end of the slideway is connected to the outside, the sliding seat can be slidably mounted on the slideway, and the driving assembly is mounted on the shell assembly for driving the sliding seat to slide reciprocatingly along the slideway; the first rotating member and the end of the first shaft close to the first rotating member are exposed outside the shell assembly, and at least a part of the first shaft can be axially retracted.

[0021] By adopting the above scheme, when the base and each measuring component are located at the hole to be measured, the driving component can drive the sliding seat to move along the slide toward one side of the base, so that the sliding seat can drive the base to move synchronously in the direction close to the hole to be measured. During this period, the first axis can adaptively axially expand and contract with the movement of the base, thereby basically avoiding the first axis from interfering with and hindering the movement of the sliding seat and the base. During this period, the first rotating member can also drive the first axis to rotate in the positive direction, so that the flexible member of each measuring component can be rolled up through the first axis, so that the flexible member can pull the corresponding abutment member, so that the abutment member of each measuring component can move toward the side close to the corresponding elastic member at the same time, and actively "contract". In this way, it is convenient for the base and each measuring component to quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the aperture measuring device.

[0022] By adopting the above scheme, when each measuring component has entered the hole to be measured, the first rotating member exposed outside the shell component can be used to drive the first shaft to rotate in the opposite direction, so as to unwind the flexible member of each measuring component through the first shaft, and release the pulling force and resistance of the flexible member on the abutment member, thereby basically avoiding the flexible member from interfering with and hindering the measuring operation of each measuring component. On this basis, the driving component can also drive the sliding seat to move along the slideway, so that the base can move along the hole depth direction of the hole to be measured under the drive of the sliding seat, thereby driving each measuring component to reach the cross section of the hole to be measured at any hole depth, and each measuring component can be stabilized at the cross section of the hole to be measured at any hole depth, so that each measuring component can accurately measure the aperture of the hole to be measured at the cross section. Therefore, it can be ensured that the aperture measuring device can freely adjust each measuring component to any hole depth of the hole to be measured, and measure the aperture of the hole to be measured at any hole depth; it can be ensured that the measuring range of the aperture measuring device can cover the entire hole depth of the hole to be measured; it can be convenient for the aperture measuring device to fit the hole to be measured at any hole depth; it can be ensured that the aperture measuring device can measure the aperture of the hole to be measured with a larger hole depth. In this way, the measuring range of the aperture measuring device can be expanded, the measuring accuracy of the aperture measuring device on the aperture of the hole to be measured can be improved, and the performance of the aperture measuring device can be improved.

[0023] In some embodiments, the first shaft includes at least two first sleeve structures that are coaxially arranged and sleeved in sequence.

[0024] By adopting the above scheme, the first axis can be at least partially axially retractable through at least two first sleeve structures that are coaxially arranged and sleeved in sequence. Based on this, during the period when the sliding seat and the base move synchronously along the slideway, it can be ensured that the first axis can move with the base and be adaptively and smoothly retracted, thereby basically avoiding the first axis from interfering with and hindering the movement of the sliding seat and the base, ensuring the performance and service life of the first axis, and taking into account the "functions jointly realized by the first rotating member, the first axis, and the flexible member" and the "functions jointly realized by the sliding seat, the housing assembly, and the driving assembly", and ensuring and improving the performance of the aperture measuring device.

[0025] In some embodiments, a rack is provided on the peripheral side of the sliding seat, and the extension direction of the rack is parallel to the extension direction of the slide; the driving assembly includes a second shaft, a second rotating member and a gear, the second shaft is installed on the housing assembly, the gear is installed on the second shaft and meshes with the rack, and the second rotating member is installed on one end of the second shaft for driving the second shaft and the gear to rotate synchronously.

[0026] By adopting the above scheme, the second rotating member can be driven to rotate, so that the second shaft and the gear can be driven to rotate synchronously through the second rotating member, thereby reliably and smoothly driving the rack and the sliding seat to reciprocate along the slideway through the direct or indirect meshing relationship between the gear and the rack. As a result, the driving component can drive the sliding seat to reciprocate along the slideway conveniently, quickly and smoothly with a simplified and reliable structure, thereby improving the structural reliability and use performance of the driving component, and improving the structural reliability, convenience of use and use performance of the aperture measuring device.

[0027] In some embodiments, the shell assembly is provided with a mounting hole, and the second shaft is rotatably mounted in the mounting hole; the second rotating member stop limit is located at a side opening of the mounting hole; the drive assembly includes a stop member, the stop member is installed at one end of the second shaft away from the second rotating member, and the stop limit is located at the other side opening of the mounting hole.

[0028] By adopting the above scheme, the housing assembly can be installed with the second shaft through the mounting hole to preliminarily stabilize the installation position of the second shaft and the drive assembly relative to the housing assembly. On this basis, the drive assembly can be installed on one end of the second shaft through the second rotating member and the stopper is limited to one side of the hole of the mounting hole, and can also be installed on the other end of the second shaft through the stopper and the stopper is limited to the other side of the hole of the mounting hole. Based on this, the second two ends of the second shaft can be limited and positioned by the second rotating member and the stopper to ensure that the second shaft can stabilize the axial position relative to the mounting hole, and limit the axial movement of the second shaft along the mounting hole. In this way, the relative position of the gear installed on the second shaft can be stabilized, so that the stability and reliability of the meshing cooperation between the gear and the rack can be stabilized, the performance and reliability of the drive assembly can be guaranteed and improved, and the driving effect of the drive assembly on the sliding seat can be guaranteed.

[0029] In some embodiments, a reference platform is provided at one end of the housing component close to the base, and a reference surface is provided on one side of the reference platform close to the base, and the reference surface is parallel to the cross section of the base where each measuring component is located.

[0030] By adopting the above scheme, when the base is located at the hole to be measured, by positioning the reference surface of the reference table in a close fit against the end surface of the hole to be measured, the position and state of the housing component relative to the hole to be measured can be stabilized, and the reference surface can be parallel to the cross section of the hole to be measured. Since the reference surface is parallel to the cross section of the base where each measuring component is located, it can be ensured that each measuring component located on the same cross section of the base can be located on the same cross section of the hole to be measured during the period of entering the hole to be measured, so that each measuring component can reach any cross section of the hole to be measured and measure the aperture of the hole to be measured at the cross section. In this way, the convenience and performance of the aperture measuring device can be effectively improved, and the measurement accuracy of the aperture of the hole to be measured by each measuring component can be effectively guaranteed and improved.

[0031] In some embodiments, the measuring assembly includes a telescopic member, one end of the telescopic member is connected to the abutment member, the other end of the telescopic member is connected to the peripheral wall of the base, and at least a portion of the telescopic member is axially retractable.

[0032] By adopting the above scheme, the measuring component can support the abutment through the telescopic part connected between the abutment and the peripheral wall of the base, and hide and protect the elastic part in the telescopic part. Based on this, it is beneficial to ensure the effectiveness of the abutment, to ensure and extend the service life of the elastic part, and to ensure and extend the service life of each measuring component and the aperture measuring device. In addition, since at least part of the telescopic part can be axially retracted, during the period when the abutment is forced to move toward or away from the side of the elastic part, the telescopic part can be adaptively retracted with the movement of the abutment, thereby basically avoiding the interference of the telescopic part with the elastic deformation of the elastic part and the movement of the abutment, and ensuring the performance of the measuring component.

[0033] In some embodiments, the telescopic member includes at least two second sleeve structures that are coaxially arranged and sleeved in sequence.

[0034] By adopting the above solution, the telescopic member can be at least partially axially retractable through at least two second sleeve structures that are coaxially arranged and sleeved in sequence. Based on this, when the abutment member is forced to move toward or away from the elastic member, the telescopic member can be adaptively and smoothly retracted with the movement of the abutment member, thereby basically avoiding the telescopic member from interfering with or hindering the elastic deformation of the elastic member and the movement of the abutment member, thereby ensuring the performance and service life of the telescopic member and the performance of the measuring assembly.

[0035] In some embodiments, the abutment member includes an abutment head and an abutment seat, the abutment seat is connected to the elastic member, and the abutment head is detachably connected to a side of the abutment seat away from the elastic member.

[0036] By adopting the above scheme, the abutment member can be connected to the elastic member through the abutment seat and support the abutment head. The abutment member can also abut against the hole wall of the hole to be measured through the abutment head detachably connected to the abutment seat during the period when the measuring component enters the hole to be measured, so that the measuring component can measure the aperture of the hole to be measured. In this way, the performance of the abutment member can be guaranteed. In addition, since the abutment head and the abutment seat are detachably connected, the abutment head can be easily replaced as needed, thereby effectively reducing the risk of affecting the data accuracy of the measuring component due to severe wear of the abutment head, ensuring the measurement accuracy of the measuring component, and ensuring and extending the service life of the measuring component.

[0037] In some embodiments, the abutment member has an abutment surface on one side away from the elastic member, and the abutment surface is an arc surface.

[0038] By adopting the above scheme, during the period when the measuring component enters the hole to be measured, the abutment member can abut against the hole wall of the hole to be measured through the abutment surface in the form of an arc surface, and form point contact or line contact with the hole wall of the hole to be measured. Based on this, it can be ensured that the abutment member can abut against the hole wall of the hole to be measured closely and fittingly through the abutment surface, and reduce the risk of the abutment surface and the hole wall of the hole to be measured in the void, thereby ensuring and improving the accuracy of the data measured by the measuring component, and ensuring and improving the measurement accuracy of the measuring component. In addition, based on the abutment surface in the form of an arc surface, the contact area between the abutment member and the hole wall of the hole to be measured can also be reduced accordingly, thereby reducing the degree of wear of the abutment member, and ensuring and extending the service life of the abutment member and the measuring component.

[0039] In some embodiments, the base includes a second limiting structure, and the second limiting structure is arranged in a one-to-one correspondence with the conversion element, and is used to limit the installation of the corresponding conversion element.

[0040] By adopting the above solution, a second limiting structure can be provided on the base, so as to facilitate the limited installation of the conversion element through the second limiting structure. Based on this, the installation position and installation state of the conversion element relative to the base can be conveniently, effectively and reliably stabilized, so that the conversion element can stably, reliably and accurately convert the value of the force applied to it by the elastic member into a relevant electrical signal.

[0041] In some embodiments, the second limiting structure includes two limiting members arranged opposite to each other, a limiting groove is provided on one side of the limiting member facing the other limiting member, the limiting groove is connected to the outside at one end in its extension direction, and the conversion element is inserted into the limiting grooves of the two limiting members.

[0042] By adopting the above scheme, the second limiting structure can be provided through two relatively arranged limiting members, especially through the limiting grooves of the two limiting members, for the conversion element to be inserted therein, so as to limit the installation of the conversion element. Based on this, the installation position and installation state of the conversion element relative to the base can be conveniently, effectively and reliably stabilized. On this basis, the second limiting structure can also expose the middle part of the conversion element through the space between the two limiting members, while avoiding the middle part of the constrained conversion element. Based on this, it is convenient for the middle part of the conversion element to connect the elastic member, and it is convenient for the middle part of the conversion element to convert the value of the force applied by the elastic member to it into a related electrical signal, thereby effectively reducing the influence of the second limiting structure on the accuracy of the data converted by the conversion element, and can ensure and improve the measurement accuracy of the conversion element and the measuring component.

[0043] In some embodiments, the measuring components are arranged in equal-angle circles around the central axis of the base.

[0044] By adopting the above scheme, on the basis that each measuring component is located on the same cross section of the base, each measuring component can be arranged in an equiangular circle around the central axis of the base to effectively balance and optimize the layout of each measuring component. Based on this, when each measuring component enters the hole to be measured with the base and the central axis of the base is basically parallel to the central axis of the hole to be measured, it is convenient to accurately measure the aperture of the hole to be measured in at least two radial directions distributed in a circumferential array on the same cross section through the evenly distributed measuring components, so that it is convenient to integrate the measurement data of each measuring component to fit a more accurate aperture, which can improve the measurement accuracy of the aperture measuring device for the aperture of the hole to be measured, and make the aperture measuring device particularly suitable for measuring the aperture of the hole to be measured that is a circular hole.

[0045] In some embodiments, there are three measuring components.

[0046] By adopting the above scheme, the number of measurement components can be optimized by providing three measurement components on the basis that each measurement component is located on the same cross section of the base. Based on this, when each measurement component enters the hole to be measured with the base and the central axis of the base is basically parallel to the central axis of the hole to be measured, the aperture of the hole to be measured in three radial directions of the same cross section can be accurately measured by three measurement components, so that a more accurate aperture can be fitted by integrating the measurement data of the three measurement components, which can reduce errors and thus improve the measurement accuracy of the aperture of the hole to be measured by the aperture measurement device. In addition, by providing three measurement components, the number of measurement components can be reduced accordingly on the basis of improving measurement accuracy and reducing errors, so as to simplify the structure of the aperture measurement device and reduce costs.

[0047] In some embodiments, the conversion element includes a strain gauge.

[0048] By adopting the above scheme, the conversion element adopts a strain gauge, so that the strain gauge can bear the force applied by the elastic member, and sensitively and adaptively generate strain, and respond in a timely manner to convert the strain into a relevant electrical signal. Based on this, the sensitivity, response speed and measurement accuracy of the conversion element can be guaranteed and improved, thereby improving the measurement accuracy and measurement speed of the aperture measuring device for the aperture of the hole to be measured.

[0049] In some embodiments, the aperture measurement device includes a processor and an electrical connection member, wherein the electrical connection member electrically connects the conversion element to the processor, and the processor is configured to receive and process conversion data of the conversion element.

[0050] By adopting the above scheme, on the basis of each conversion element measuring the elastic force of the elastic member reacting on it, the aperture measuring device can transmit the conversion data of each conversion element to the processor through each electrical connector, and receive and process the conversion data of the conversion element through the processor. Based on this, the aperture measuring device can complete the measurement operation and data processing operation by itself, and can directly reflect the aperture of the hole to be measured without the help of external analysis instruments, thereby effectively improving the convenience and performance of the aperture measuring device.

[0051] In some embodiments, the aperture measurement device includes a display, which is electrically connected to the processor and is used to receive and display processing data of the processor.

[0052] By adopting the above solution, on the basis of the processor receiving and processing the conversion data of the conversion element, the aperture measuring device can receive the data processed by the processor through a display electrically connected to the processor, and display the received data on the screen. Based on this, the aperture measuring device itself can complete the measurement operation, data processing operation and data display operation, which can facilitate the operator to intuitively read the aperture of the hole to be measured, thereby effectively improving the convenience and performance of the aperture measuring device.

[0053] In some embodiments, the aperture measurement device includes a battery, which is electrically connected to the processor to power the processor.

[0054] By adopting the above solution, at least during the operation of the aperture measuring device, the processor and other components can be powered by the battery to ensure the reliable operation of the processor and other components. Based on this, the operating time of the aperture measuring device can be guaranteed, and the convenience, reliability and performance of the aperture measuring device can be improved.

[0055] In some embodiments, the aperture measurement device includes a switch button, which is electrically connected to the processor and is used to control the operation or braking of the processor.

[0056] By adopting the above scheme, the processor can be controlled to start working by the switch button during the operation of the aperture measuring device; and the processor can be controlled to stop working by the switch button during the idle period of the aperture measuring device. Based on this, the energy consumption of the aperture measuring device during the idle period can be saved accordingly on the basis of ensuring the usability of the aperture measuring device, and the operating time of the aperture measuring device can be extended accordingly.

[0057] In some embodiments, the aperture measurement device includes a measurement button, which is electrically connected to the conversion element and is used to control the operation or braking of the conversion element.

[0058] By adopting the above scheme, when each measuring component enters the hole to be measured with the base, and each measuring component is stable at a certain cross section of the hole to be measured and is ready for measurement, the measuring button can be used to control the conversion element to start measuring; and at other non-measuring moments, the measuring button can be used to control the conversion element to stop working. Based on this, it is convenient for each measuring component to accurately measure the required aperture of the hole to be measured, and it is helpful to save energy consumption of the aperture measuring device during the idle period. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0060] Figure 1 A schematic diagram of the structure of an aperture measurement device provided in some embodiments of the present application;

[0061] Figure 2 for Figure 1 A bottom view of the aperture measurement device is provided;

[0062] Figure 3 for Figure 2 A cross-sectional view along AA is provided;

[0063] Figure 4 for Figure 3 A magnified image of region B is provided;

[0064] Figure 5 A schematic diagram of the connection of a conversion element, an electrical connector, a processor, a display, and a battery provided in some embodiments of the present application;

[0065] Figure 6 An exploded schematic diagram of an aperture measurement device provided in some embodiments of the present application;

[0066] Figure 7 for Figure 6Exploded view of the supplied base and measurement components.

[0067] Among them, the reference numerals in the figure are:

[0068] 10-base, 11-peripheral wall, 111-first through hole, 12-base, 13-first limiting structure, 14-second limiting structure, 141-limiting member, 1411-limiting groove; 20-measuring component, 21-abutting member, 211-abutting head, 2111-abutting surface, 212-abutting seat, 22-elastic member, 23-conversion element, 231-second through hole, 24-flexible member, 25-telescopic member, 251-second sleeve structure; 30-first shaft, 31-first sleeve structure; 40-first rotating member; 50-first bearing, 60-second bearing; 70- Sliding seat, 71- rack, 72- fourth through hole; 80- shell assembly, 81- slideway, 82- mounting hole, 821- mounting port, 822- first groove, 823- second groove, 83- reference platform, 831- reference surface, 84- first shell, 85- second shell, 86- third shell, 861- third through hole; 90- driving assembly, 91- second shaft, 92- second rotating member, 93- gear, 94- stop member; 100- electrical connector, 110- processor, 120- display, 130- battery, 140- switch button, 150- measurement button. DETAILED DESCRIPTION

[0069] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the application is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0070] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or at least two of the features. In the description of this application, "at least two" means two or more, unless otherwise clearly and specifically defined.

[0072] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] In the present application, "axial" refers to the extension direction of the central axis of the corresponding structure, "radial" refers to any direction of the corresponding structure passing through the central axis and perpendicular to the central axis, and "circumferential" refers to the circumferential direction of the ring formed by the outer peripheral surface of the corresponding structure.

[0074] In some scenarios, it is necessary to measure the diameter of a hole (i.e., the size of the hole in its radial direction). For example, after the hole is machined, the diameter of the hole can be measured to check whether the diameter of the hole is qualified. For another example, before a component is matched with a hole, the diameter of the hole can be measured to select a component of appropriate specifications so that the component can be adapted and reliably matched with the hole.

[0075] In this regard, measuring instruments such as internal diameter micrometers and vernier calipers are usually used to measure the aperture of the hole. In some cases, the measuring instrument includes two measuring points, which are arranged opposite to each other along the same radial direction of the measuring instrument, and the two measuring points can approach each other or move away from each other at the same time. When the two measuring points enter the hole to be measured, and the two measuring points are located on any diameter of the hole to be measured, and the two measuring points move away from each other at the same time until they respectively abut against the hole wall of the hole to be measured, the distance between the two measuring points can reflect the aperture of the hole to be measured. However, since the two measuring points are approaching each other or moving away from each other at the same time in the radial direction, in actual measurement, it is difficult to accurately control the center lines of the two measuring points to coincide with the central axis of the hole to be measured in the case of blind operation. Therefore, it is also difficult to ensure that the two measuring points can abut against the hole wall of the hole to be measured at the same time. There is a risk that the two measuring points measure at the same time but do not abut against the hole wall of the hole to be measured at the same time, resulting in a large deviation between the measurement data measured by the two measuring points and the actual aperture of the hole to be measured. As a result, the existing measuring instruments have poor measurement accuracy for aperture.

[0076] Therefore, some embodiments of the present application provide an aperture measuring device, which, when each measuring component enters the hole to be measured with the base and the central axis of the base is substantially parallel to the central axis of the hole to be measured, can conveniently, quickly and accurately measure the aperture of the hole to be measured in at least two radial directions on the same cross section through each measuring component located on the same cross section of the base. During this period, each measuring component can elastically abut the abutment component through the elastic component, so that the abutment component can adaptively abut against the hole wall of the hole to be measured, thereby reducing the risk of the abutment component not abutting against the hole wall of the hole to be measured, and reducing the risk of each measuring component measuring at the same time but each abutment component not abutting against the hole wall of the hole to be measured at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measuring component. On this basis, each measuring component can measure the elastic force of the elastic component reacting to the conversion element through the conversion element, and can convert the elastic force into a related electrical signal to output to the processor. Based on this, according to the calculation formula of the elastic force, and in combination with the setting of "the extension direction of the elastic member is parallel to the corresponding radial direction of the base", the processor can process the conversion data of the conversion element into the deformation amount of the corresponding elastic member in the corresponding radial direction of the base, so as to obtain the aperture of the hole to be measured in the same cross section corresponding to each elastic member in the radial direction. Based on this, the aperture measuring device can conveniently, quickly and accurately measure the aperture of the hole to be measured, and can even fit a more accurate aperture by integrating the measurement data, thereby improving the measurement accuracy and efficiency of the aperture measuring device for the aperture of the hole to be measured.

[0077] The specific implementation of this application is described in detail below in conjunction with specific embodiments:

[0078] See also Figure 1 , some embodiments of the present application provide an aperture measuring device, which can be used to measure the aperture of a hole to be measured. The hole to be measured can be a through hole or a blind hole. The hole to be measured can be a circular hole or a non-circular hole (such as a rectangular hole, etc.). The aperture of the hole to be measured refers to the size of the hole to be measured in its radial direction. The radial direction of the hole to be measured refers to any direction passing through the central axis of the hole to be measured and perpendicular to the central axis, that is, the radial direction of the hole to be measured intersects the central axis of the hole to be measured perpendicularly and not in a skewed plane.

[0079] Based on this, when the hole to be measured is a circular hole, the radial direction of the hole to be measured refers to the diameter direction of the hole to be measured; the aperture of the hole to be measured refers to the size of the hole to be measured in its diameter direction, that is, the diameter of the hole to be measured. In this case, in any radial direction, the value of the aperture of the hole to be measured is basically the same.

[0080] When the hole to be measured is a non-circular hole, the radial direction of the hole to be measured includes any direction passing through the central axis of the hole to be measured and perpendicular to the central axis, and the aperture of the hole to be measured includes the size of the hole to be measured in any radial direction. In this case, the values ​​of the aperture of the hole to be measured may be different in different radial directions. For example, when the hole to be measured is a rectangular hole, on any rectangular cross-section perpendicular to the central axis of the hole to be measured, the radial direction of the hole to be measured includes any direction passing through the center of the rectangular cross-section, such as the direction passing through the center of the rectangular cross-section and perpendicular to the opposite sides of the rectangular cross-section, and for example, the direction passing through the center and two diagonal sides of the rectangular cross-section. In this case, the values ​​of the aperture of the hole to be measured may be different in different radial directions. For example, in the direction passing through the center of the rectangular cross-section and perpendicular to the opposite sides of the rectangular cross-section, the aperture of the hole to be measured corresponds to the length or width of the rectangular cross-section. For another example, in the direction passing through the center and two diagonal sides of the rectangular cross-section, the aperture of the hole to be measured corresponds to the diagonal length of the rectangular cross-section.

[0081] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The aperture measuring device includes a base 10 and a measuring assembly 20. At least two measuring assemblies 20 are provided, and each measuring assembly 20 is located on the same cross section of the base 10. The measuring assembly 20 includes an abutment member 21, an elastic member 22, and a conversion element 23. The conversion element 23 is mounted on the base 10. One end of the elastic member 22 is connected to the abutment member 21, and the other end of the elastic member 22 is connected to the conversion element 23. The extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10.

[0082] It should be noted that the base 10 refers to a component of the aperture measuring device for mounting the measuring assembly 20. In an actual measurement scenario, the base 10 can enter the hole to be measured and drive each measuring assembly 20 installed thereon to also enter the hole to be measured.

[0083] The base 10 may adopt a variety of structures. In some embodiments, the base 10 may include a base 12 and a peripheral wall 11 disposed upright on the base 12 and in an annular shape, wherein the base 12 and the peripheral wall 11 together define an internal space of the base 10, wherein the peripheral wall 11 may be in a variety of forms, such as a polygonal ring, a circular ring, and the like.

[0084] It should also be noted that at least two measuring components 20 are provided. Each measuring component 20 is spaced apart along the circumference of the base 10 and is located on the same cross section of the base 10. The cross section of the base 10 refers to the cross section of the base 10 perpendicular to its central axis. Based on this, by making each measuring component 20 located on the same cross section of the base 10, each measuring component 20 can be in the same plane when entering the hole to be measured with the base 10. In this way, when the central axis of the base 10 is basically parallel to the central axis of the hole to be measured, each measuring component 20 can be located in the same cross section of the hole to be measured, and the aperture of the hole to be measured in the cross section can be measured. The cross section of the hole to be measured refers to the cross section of the hole to be measured perpendicular to its central axis.

[0085] It should also be noted that the measuring assembly 20 includes an abutment member 21, an elastic member 22 and a conversion element 23. The abutment member 21 is a member used to abut against the hole wall of the hole to be measured when the measuring assembly 20 enters the hole to be measured. The structure, shape, material, etc. of the abutment member 21 can be flexibly designed.

[0086] The elastic member 22 is a component with elastic properties. One end of the elastic member 22 is connected to the abutment member 21, and the other end of the elastic member 22 is connected to the conversion element 23. The elastic member 22 is used to provide an elastic force to push the abutment member 21 and the conversion element 23 when the measuring component 20 enters the hole to be measured. The elastic member 22 and the abutment member 21 can be connected by welding, bonding, etc., but not limited to welding, bonding, etc. The elastic member 22 and the conversion element 23 can be connected by welding, bonding, etc., but not limited to welding, bonding, etc. The elastic member 22 can be, but not limited to, a spring.

[0087] The extension direction of the elastic member 22 refers to the direction from the end thereof connected to the abutment member 21 to the end thereof connected to the conversion element 23. The elastic member 22 can be subjected to force to produce elastic deformation along its extension direction, that is, the deformation direction of the elastic member 22 corresponds to (that is, parallel to) the extension direction of the elastic member 22. The extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10, that is, the deformation direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10. Among them, the corresponding radial direction of the base 10 refers to the radial direction of the base 10 corresponding to the location where the elastic member 22 is set.

[0088] The conversion element 23 is a component used to convert the value of the force applied by the elastic member 22 to a related electrical signal. The conversion element 23 can be, but is not limited to, a strain gauge, a diaphragm, a strain beam, and the like.

[0089] Based on this, when each measuring component 20 is about to enter the hole to be measured along with the base 10, the abutment 21 of each measuring component 20 can be respectively pushed by the hole mouth and the hole wall of the hole to be measured, or pulled by other components of the aperture measuring device, and move toward the side close to the corresponding elastic member 22 (that is, the elastic member 22 correspondingly connected to the abutment 21), and cause the corresponding elastic member 22 to produce compressive elastic deformation and accumulate elastic force, so that each measuring component 20 can smoothly enter the hole to be measured along with the base 10.

[0090] When each measuring component 20 has entered the hole to be measured, the abutting member 21 of each measuring component 20 can be respectively and adaptively abutted against the hole wall of the hole to be measured under the pushing action of the elastic force of the corresponding elastic member 22, thereby reducing the risk that the abutting member 21 does not abut against the hole wall of the hole to be measured. At the same time, when the abutting member 21 of each measuring component 20 is respectively and adaptively abutted against the hole wall of the hole to be measured, the elastic force (i.e., strain force) of the elastic member 22 will also react to the corresponding conversion element 23 (i.e., the conversion element 23 to which the elastic member 22 is connected), so that the corresponding conversion element 23 can measure the elastic force of the elastic member 22 and convert the elastic force into a related electrical signal.

[0091] Based on this, according to the calculation formula of the elastic force (i.e., Hooke's law F=kx, where F is the elastic force, k is the stiffness coefficient of the elastic member 22, and x is the deformation of the elastic member 22 compared to the original length), the processor 110 (such as Figure 5 The processor 110 receives the electrical signals converted and output by each conversion element 23, and processes the electrical signals into the deformation amount of the corresponding elastic member 22. Since the extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10, that is, the deformation direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10, the deformation amount of the corresponding elastic member 22 is the deformation amount of the corresponding elastic member 22 in the corresponding radial direction of the base 10. The processor 110 is used to receive and process the conversion data of the conversion element 23. The processor 110 can be a component belonging to the aperture measuring device, or an external component independent of the aperture measuring device, or even an internal component of an external analytical instrument.

[0092] On this basis, combined with the setting of "each measuring component 20 is located on the same cross section of the base 10", when the central axis of the base 10 is basically parallel to the central axis of the hole to be measured, the diameter of the corresponding elastic member 22 on the same cross section of the hole to be measured can be obtained according to the deformation amount of each elastic member 22 on the corresponding radial direction of the base 10. In this way, the diameter of the hole to be measured can be measured conveniently, quickly and accurately, and the measurement accuracy and efficiency of the aperture measuring device for the diameter of the hole to be measured can be improved. In particular, when the hole to be measured is a circular hole, since the diameter of the circular hole in any radial direction is basically the same, the measurement data of each measuring component 20 can be combined to jointly fit a more accurate diameter of the circular hole, thereby optimizing and improving the measurement accuracy of the aperture measuring device for the diameter of the circular hole.

[0093] In summary, the aperture measuring device provided in the embodiment of the present application, when each measuring component 20 enters the hole to be measured along with the base 10, and the central axis of the base 10 is substantially parallel to the central axis of the hole to be measured, can conveniently, quickly and accurately measure the aperture of the hole to be measured in at least two radial directions on the same cross section through each measuring component 20 located on the same cross section of the base 10. During this period, each measuring component 20 can elastically abut the abutting member 21 through the elastic member 22, so that the abutting member 21 can adaptively abut against the hole wall of the hole to be measured, thereby reducing the risk that the abutting member 21 does not abut against the hole wall of the hole to be measured, and reducing the risk that each measuring component 20 measures at the same time but each abutting member 21 does not abut against the hole wall of the hole to be measured at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measuring component 20. On this basis, each measuring component 20 can measure the elastic force of the elastic member 22 reacting to the conversion element 23 through the conversion element 23, and can convert the elastic force into a related electrical signal to output to the processor 110. Based on this, according to the calculation formula of the elastic force, and in combination with the setting that "the extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10", the processor 110 can process the conversion data of the conversion element 23 into the deformation amount of the corresponding elastic member 22 in the corresponding radial direction of the base 10, so as to obtain the aperture of the hole to be measured in the same cross section corresponding to each elastic member 22 in the radial direction. Based on this, the aperture measuring device can conveniently, quickly and accurately measure the aperture of the hole to be measured, and can even fit a more accurate aperture by integrating the measurement data, thereby improving the measurement accuracy and efficiency of the aperture measuring device for the aperture of the hole to be measured.

[0094] See also Figure 3 , Figure 4 , Figure 6 , Figure 7 In some embodiments of the present application, the peripheral wall 11 of the base 10 is penetrated by a first through hole 111. The first through holes 111 are arranged in a one-to-one correspondence with the elastic members 22, and the elastic members 22 are inserted into the corresponding first through holes 111. The conversion element 23 is installed in the base 10.

[0095] It should be noted that the peripheral wall 11 of the base 10 refers to the annular wall structure formed along the circumference of the base 10. The peripheral wall 11 of the base 10 is provided with a first through hole 111. There are at least two first through holes 111, and each first through hole 111 is staggered on the peripheral wall 11. The first through holes 111 all penetrate the peripheral wall 11 along the hole depth direction to connect the internal space of the base 10 with the external space.

[0096] The number of the first through holes 111 corresponds to the number of the elastic members 22. Each of the first through holes 111 corresponds to each of the elastic members 22. The elastic members 22 are inserted into the corresponding first through holes 111. Based on this, the elastic members 22 can be installed in a limited and positioned manner through the first through holes 111, and the extension direction and deformation direction of the elastic members 22 can be constrained and guided through the first through holes 111, so that the installation and setting of the elastic members 22 meet the design.

[0097] When the elastic member 22 is inserted into the corresponding first through hole 111, the end of the elastic member 22 outside the base 10 is connected to the abutment member 21, and the end of the elastic member 22 inside the base 10 is connected to the conversion element 23. In this case, the conversion element 23 is installed in the base 10. Based on this, the conversion element 23 can be installed in a stable position and state relative to the base 10, thereby ensuring and improving the connection stability and connection reliability between the conversion element 23 and the elastic member 22, and facilitating the conversion element 23 to perform the measurement function in a long-term and reliable manner. On this basis, the base 10 can also be used to form a protective effect on the conversion element 23, thereby ensuring and extending the service life of the conversion element 23.

[0098] By adopting the above scheme, the first through hole 111 can be set on the peripheral wall 11 of the base 10, and the elastic member 22 can be inserted into the corresponding first through hole 111, so that the elastic member 22 can be limited and positioned through the first through hole 111, and the extension direction and deformation direction of the elastic member 22 can be constrained and guided through the first through hole 111, so that the installation and setting of the elastic member 22 can meet the design, thereby ensuring and improving the installation accuracy and measurement accuracy of the measuring component 20. Correspondingly, the conversion element 23 can be connected to the end of the elastic member 22 located in the base 10, and the conversion element 23 can be installed in the base 10, so that the conversion element 23 can be installed in a stable position and state relative to the base 10, based on which, the connection stability and connection reliability between the conversion element 23 and the elastic member 22 can be guaranteed and improved, so that the conversion element 23 can play a measuring function in a long-term and reliable manner. In addition, the base 10 can also form a protective effect on the conversion element 23, thereby ensuring and extending the service life of the conversion element 23.

[0099] Of course, in other embodiments, the conversion element 23 may be installed on the peripheral wall 11 of the base 10 , while the elastic member 22 and the abutting member 21 are disposed on the outer side of the base 10 .

[0100] See also Figure 3 , Figure 4 , Figure 6 , Figure 7 In some embodiments of the present application, the conversion element 23 is penetrated by a second through hole 231. The measuring assembly 20 includes a flexible member 24. The flexible member 24 is inserted into the corresponding second through hole 231, and one end of the flexible member 24 is connected to the abutment 21. The aperture measuring device includes a first shaft 30 and a first rotating member 40. One end of the first shaft 30 is erected on the base 10, and the other end of the first shaft 30 is connected to the first rotating member 40. One end of the flexible member 24 away from the abutment 21 is connected to the first shaft 30. The first rotating member 40 is used to drive the first shaft 30 to rotate so that the first shaft 30 can reel in or unreel the flexible member 24.

[0101] It should be noted that the flexible member 24 is a member used to form a pulling force on the abutment member 21. The flexible member 24 is flexible and can be rolled up and unrolled. The flexible member 24 can be, but is not limited to, a flexible pull rope, a flexible roll sheet, etc. Correspondingly, the conversion element 23 is provided with a second through hole 231, and the second through hole 231 penetrates the conversion element 23 along the thickness direction of the conversion element 23. The setting position of the second through hole 231 corresponds to the setting position of the flexible member 24. The second through hole 231 allows the flexible member 24 to pass through it.

[0102] like Figure 4 , Figure 7 As shown, in some embodiments, the peripheral wall 11 of the base 10 is penetrated with a first through hole 111, the elastic member 22 is provided in the corresponding first through hole 111, and the conversion element 23 is installed in the base 10. In this case, the flexible member 24 is provided in the corresponding second through hole 231 and the first through hole 111, and the end of the flexible member 24 located outside the base 10 is connected to the abutment member 21.

[0103] In other embodiments, the conversion element 23 may be installed on the peripheral wall 11 of the base 10 . In this case, the flexible member 24 is only passed through the corresponding second through hole 231 , and the end of the flexible member 24 outside the base 10 is connected to the abutment member 21 .

[0104] The flexible member 24 and the abutting member 21 may be connected by, but not limited to, welding, bonding, or the like.

[0105] It should also be noted that the first shaft 30 is a component for winding or unwinding the flexible member 24. The first shaft 30 is rotatably arranged on the base 10. One end of the first shaft 30 is connected to the base 10 to effectively stabilize the installation position of the first shaft 30 relative to the base 10 without affecting the rotational freedom of the first shaft 30, and to ensure that the first shaft 30 can stably rotate around its central axis.

[0106] The first rotating member 40 is connected to the end of the first shaft 30 away from the base 10, and is a component used to drive the first shaft 30 to rotate around the central axis of the first shaft 30. The first rotating member 40 and the first shaft 30 can be connected by, but not limited to, sleeve connection, clamping connection, etc., and the first rotating member 40 and the first shaft 30 keep synchronous rotation. The first rotating member 40 can be, but not limited to, a knob, a handle, etc. The first rotating member 40 can be manually driven or electrically driven.

[0107] One end of the flexible member 24 of each measuring assembly 20 away from the abutment member 21 is connected to the first shaft 30. The flexible member 24 and the first shaft 30 may be connected by, but not limited to, welding, bonding, and the like.

[0108] Based on this, when each measuring component 20 is about to enter the hole to be measured with the base 10, the first rotating member 40 can be rotated in the positive direction to drive the first shaft 30 to rotate synchronously through the first rotating member 40, so that the rotating first shaft 30 can reel in the flexible member 24 of each measuring component 20. In this way, the flexible member 24 can be urged to pull the corresponding abutting member 21, so that the abutting member 21 of each measuring component 20 can simultaneously move toward the side close to the corresponding elastic member 22, that is, to achieve a "contraction" action, so that each measuring component 20 can smoothly enter the hole to be measured with the base 10. During this period, the "contracted" abutting member 21 can cause the corresponding elastic member 22 to produce compressive elastic deformation and accumulate elastic force.

[0109] When each measuring component 20 has entered the hole to be measured, the first rotating member 40 can be rotated in the opposite direction to drive the first shaft 30 to rotate synchronously via the first rotating member 40, so that the rotating first shaft 30 can unwind the flexible member 24 of each measuring component 20, thereby releasing the pulling force and resistance of the flexible member 24 on the abutment member 21. On this basis, the abutment member 21 of each measuring component 20 can be adaptively abutted to the hole wall of the hole to be measured under the elastic force of the corresponding elastic member 22. At the same time, the elastic force of the elastic member 22 will also react to the corresponding conversion element 23, so that the corresponding conversion element 23 can measure the elastic force of the elastic member 22 and convert it into a related electrical signal.

[0110] Among them, “forward rotation” and “reverse rotation” are relative concepts and can be determined according to actual scenarios. When the first rotating member 40 rotates forward, it can cause the abutting member 21 to move toward the side close to the corresponding elastic member 22.

[0111] By adopting the above scheme, when each measuring component 20 is about to enter the hole to be measured with the base 10, the first rotating member 40 can drive the first shaft 30 to rotate in the positive direction, so as to reel in the flexible member 24 of each measuring component 20 via the first shaft 30. Based on this, the flexible member 24 can be prompted to pull the corresponding abutment member 21, so that the abutment member 21 of each measuring component 20 can move toward the side close to the corresponding elastic member 22 at the same time, and actively "contract", so as to facilitate each measuring component 20 to smoothly enter the hole to be measured with the base 10. In addition, when each measuring component 20 has entered the hole to be measured, the first rotating member 40 can also drive the first shaft 30 to rotate in the opposite direction, so as to unwind the flexible member 24 of each measuring component 20 via the first shaft 30, and release the pulling force and resistance of the flexible member 24 on the abutment member 21, so as to basically avoid the flexible member 24 from interfering with and hindering the measurement operation of each measuring component 20. In this way, the convenience and performance of the aperture measuring device can be effectively improved.

[0112] Of course, in other embodiments, the aperture measuring device may omit the flexible member 24, the first shaft 30 and the first rotating member 40. When each measuring assembly 20 is about to enter the hole to be measured along with the base 10, the abutting members 21 can be passively "contracted" by the thrust force exerted by the hole edge and the hole wall of the hole to be measured on the abutting members 21.

[0113] See also Figure 3 , Figure 4 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a first bearing 50 , and the first bearing 50 is sleeved on the outer periphery of the first shaft 30 .

[0114] It should be noted that the first bearing 50 is sleeved on the outer periphery of the first shaft 30. The first bearing 50 can be flexibly designed at any position of the first shaft 30. Optionally, the first bearing 50 can be sleeved on the outer periphery of the end of the first shaft 30 close to the base 10. The first bearing 50 can be used to support the first shaft 30, reduce the friction coefficient during the rotation of the first shaft 30, and ensure the rotation accuracy of the first shaft 30. The first bearing 50 can be, but is not limited to, a rolling bearing.

[0115] By adopting the above solution, the first shaft 30 can be supported by the first bearing 50 sleeved on the outer periphery of the first shaft 30, the friction coefficient of the first shaft 30 during rotation is reduced, and the rotation accuracy of the first shaft 30 is guaranteed. Based on this, the rotation stability and smoothness of the first shaft 30 can be guaranteed and improved.

[0116] See also Figure 3 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a second bearing 60 , which is sleeved on the outer periphery of the first shaft 30 , and the second bearing 60 is spaced apart from the first bearing 50 .

[0117] It should be noted that the second bearing 60 is sleeved on the outer periphery of the first shaft 30 and is spaced apart from the first bearing 50. Optionally, the second bearing 60 is sleeved on the outer periphery of the end of the first shaft 30 away from the base 10. The second bearing 60 can cooperate with the first bearing 50 to support the first shaft 30, reduce the friction coefficient during the rotation of the first shaft 30, and ensure the rotation accuracy of the first shaft 30. The second bearing 60 can be, but is not limited to, a rolling bearing.

[0118] By adopting the above solution, the second bearing 60 sleeved on the outer periphery of the first shaft 30 can cooperate with the first bearing 50 to jointly support the first shaft 30, jointly stabilize the central axis of the first shaft 30, jointly reduce the friction coefficient during the rotation of the first shaft 30, and jointly ensure the rotation accuracy of the first shaft 30. Based on this, the rotation stability and smoothness of the first shaft 30 can be guaranteed and improved.

[0119] See also Figure 3 , Figure 4 , Figure 6 In some embodiments of the present application, the base 10 includes a first limiting structure 13 for limiting the installation of the first bearing 50.

[0120] It should be noted that a first limiting structure 13 is provided on one side of the base 10 close to the first shaft 30. The structure of the first limiting structure 13 can be designed in a variety of ways. For example, the first limiting structure 13 can be an annular structure, a hole-shaped structure, a groove-shaped structure, etc. The first bearing 50 can be sleeved on the outer periphery of the end of the first shaft 30 close to the base 10, and be limitedly installed in the first limiting structure 13. Since the first shaft 30 is inserted into the first bearing 50, when the first bearing 50 is limitedly installed in the first limiting structure 13, the first shaft 30, especially the end of the first shaft 30 close to the base 10, will be limited. Among them, the fit between the first bearing 50 and the first limiting structure 13 can be a clearance fit, a transition fit, or an interference fit.

[0121] By adopting the above scheme, the first limiting structure 13 can be set on the base 10, so as to facilitate the limiting installation of the first bearing 50 through the first limiting structure 13. Based on this, the installation position of the first bearing 50 relative to the base 10 can be conveniently, effectively and reliably stabilized, so that the first bearing 50 can stably and reliably play a supporting role for the first shaft 30. In addition, since the first shaft 30 is inserted into the first bearing 50, when the first bearing 50 is limitedly installed on the first limiting structure 13, the first shaft 30, especially the end of the first shaft 30 close to the base 10, is also limited and positioned relative to the base 10, so that the installation position of the first shaft 30 relative to the base 10 can be conveniently, effectively and reliably stabilized without affecting the rotational freedom of the first shaft 30, so that the first shaft 30 can be conveniently, effectively and reliably connected with the flexible parts 24 of each measuring component 20, and the first shaft 30 can be stably rotated around its axis, and the winding or unwinding of each flexible part 24 can be reliably realized.

[0122] See also Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a sliding seat 70, a housing assembly 80 and a driving assembly 90. The base 10 is connected to one end of the sliding seat 70. The housing assembly 80 is provided with a slideway 81. The slideway 81 is extended along the extension direction of the housing assembly 80, and one end of the slideway 81 is connected to the outside. The sliding seat 70 is slidably mounted on the slideway 81. The driving assembly 90 is mounted on the housing assembly 80, and is used to drive the sliding seat 70 to slide back and forth along the slideway 81.

[0123] It should be noted that the base 10 is connected to one end of the sliding seat 70, and the sliding seat 70 is a component for supporting the base 10. The sliding seat 70 and the base 10 are separately formed and separately connected. Such a configuration can facilitate the assembly of components "provided in the enclosed space of the sliding seat 70 and the base 10" (such as the conversion element 23, the first bearing 50, the first shaft 30, etc.). Moreover, when the sliding seat 70 is connected to the base 10, the sliding seat 70 and the base 10 are relatively fixed, so that the sliding seat 70 and the base 10 can maintain synchronous movement (including synchronous movement and synchronous rotation). Among them, the connection between the sliding seat 70 and the base 10 can be achieved by, but not limited to, welding, bonding, etc.

[0124] It should also be noted that the housing assembly 80 is a housing component of the aperture measuring device. The housing assembly 80 is provided with a slideway 81. The slideway 81 is extended along the extension direction of the housing assembly 80. One end of the slideway 81 is connected to the outside of the housing assembly 80 from the corresponding end of the housing assembly 80.

[0125] At least the portion of the sliding seat 70 away from the base 10 is in a rod shape. At least the portion of the sliding seat 70 away from the base 10 can penetrate into the slideway 81 through the passage opening of the slideway 81 connected to the outside, so that the sliding seat 70 can be slidably installed on the slideway 81. Based on this, the slideway 81 can guide the moving direction of the sliding seat 70 and constrain the moving path and moving stroke of the sliding seat 70.

[0126] The shape of the portion of the sliding seat 70 slidably mounted on the slideway 81 may be the same as the shape of the slideway 81, so that the sliding seat 70 can slide smoothly on the slideway 81. In some embodiments, the shape of the portion of the sliding seat 70 slidably mounted on the slideway 81 and the shape of the slideway 81 may be the same polygon, for example, a hexagon. This arrangement can ensure that the sliding seat 70 can slide smoothly along the slideway 81, and can limit the rotation of the sliding seat 70 relative to the slideway 81, thereby constraining and guiding the movement of the sliding seat 70 in the slideway 81, and can improve the smoothness and stability of the movement of the sliding seat 70 in the slideway 81.

[0127] It should also be noted that the driving assembly 90 is a component for driving the sliding seat 70 to slide along the slideway 81. The driving assembly 90 is mounted on the housing assembly 80 so as to be supported and stabilized by the housing assembly 80. The structure of the driving assembly 90 can be designed in a variety of ways. The driving assembly 90 can provide a driving force to the sliding seat 70 to drive the sliding seat 70 to slide back and forth along the slideway 81, so that the sliding seat 70 can drive the base 10 to move back and forth synchronously along the path constrained by the slideway 81.

[0128] By adopting the above scheme, when the base 10 of the aperture measuring device is aligned toward the hole to be measured, the driving component 90 can drive the sliding seat 70 to move along the slideway 81 toward one side of the base 10, so that the sliding seat 70 can drive the base 10 to move synchronously toward the direction close to the hole to be measured, thereby enabling the base 10 and each measuring component 20 to quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the aperture measuring device.

[0129] By adopting the above scheme, when each measuring component 20 has entered the hole to be measured, the driving component 90 drives the sliding seat 70 to move along the slideway 81, so that the base 10 can move along the hole depth direction of the hole to be measured under the drive of the sliding seat 70, so that each measuring component 20 can be driven to reach the cross section of the hole to be measured at any hole depth, and each measuring component 20 can be stabilized at the cross section of the hole to be measured at any hole depth, and the aperture of the hole to be measured at the cross section can be accurately measured. In this way, it can be ensured that the measurement range of the aperture measuring device can cover the entire hole depth of the hole to be measured, and it can be ensured that the aperture measuring device can freely adjust each measuring component 20 to any hole depth of the hole to be measured, and measure the aperture of the hole to be measured at any hole depth. In this way, the measurement range of the aperture measuring device can be expanded, the aperture measuring device can be convenient for fitting the aperture of the hole to be measured at any hole depth, the measurement accuracy of the aperture measuring device on the aperture of the hole to be measured can be improved, and the use performance of the aperture measuring device can be improved. Furthermore, since the sliding seat 70 has a larger moving range along the slideway 81, the base 10 and each measuring component 20 can also have a larger moving range, so that the aperture measuring device can measure the aperture of a hole with a larger hole depth, thereby expanding the measuring range of the aperture measuring device.

[0130] See also Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a sliding seat 70, a housing assembly 80, a driving assembly 90, a first shaft 30 and a first rotating member 40. The base 10 is connected to one end of the sliding seat 70. The housing assembly 80 is provided with a slideway 81. The slideway 81 is extended along the extension direction of the housing assembly 80, and one end of the slideway 81 is connected to the outside. The sliding seat 70 is slidably mounted on the slideway 81. The driving assembly 90 is mounted on the housing assembly 80, and is used to drive the sliding seat 70 to slide back and forth along the slideway 81. The conversion element 23 is penetrated by a second through hole 231. The measuring assembly 20 includes a flexible member 24. The flexible member 24 is penetrated in the corresponding second through hole 231, and one end of the flexible member 24 is connected to the abutment 21. One end of the flexible member 24 away from the abutment 21 is connected to the peripheral side of the first shaft 30. One end of the first shaft 30 is erected on the base 10, and the other end of the first shaft 30 is connected to the first rotating member 40. The first rotating member 40 and the end of the first shaft 30 close to the first rotating member 40 are both exposed outside the housing assembly 80. At least part of the first shaft 30 is axially retractable. The first rotating member 40 is used to drive the first shaft 30 to rotate so that the first shaft 30 reels or unreels the flexible member 24.

[0131] It should be noted that this embodiment is at least combined with the previous embodiment, as well as the embodiment in which "the conversion element 23 has a second through hole 231, the measuring assembly 20 includes a flexible member 24, the flexible member 24 is inserted into the corresponding second through hole 231, one end of the flexible member 24 is connected to the abutment 21, the aperture measuring device includes a first shaft 30 and a first rotating member 40, one end of the first shaft 30 is erected on the base 10, the other end of the first shaft 30 is connected to the first rotating member 40, the end of the flexible member 24 away from the abutment 21 is connected to the peripheral side of the first shaft 30, and the first rotating member 40 is used to drive the first shaft 30 to rotate so that the first shaft 30 can reel in or unreel the flexible member 24." Some related descriptions can refer to the description of the corresponding embodiment and will not be repeated here.

[0132] In this embodiment, the end of the first shaft 30 close to the first rotating member 40 can pass through the shell assembly 80, so that the end of the first shaft 30 close to the first rotating member 40 and the first rotating member 40 installed thereon are exposed outside the shell assembly 80, thereby facilitating the first rotating member 40 to rotate and perform corresponding actions.

[0133] In this embodiment, at least part of the first shaft 30 is axially retractable, that is, at least part of the first shaft 30 can be extended or shortened in its axial direction. The "axial direction" of the first shaft 30 refers to the direction of the central axis of the first shaft 30. Based on this, during the period when the sliding seat 70 and the base 10 move synchronously along the slideway 81, it can be ensured that the first shaft 30 can be adaptively retracted and extended with the movement of the base 10, thereby reducing the interference between the first shaft 30 and the "sliding seat 70 and the base 10 moving synchronously along the slideway 81", ensuring the performance and service life of the first shaft 30, and taking into account the "functions jointly realized by the first rotating member 40, the first shaft 30, and the flexible member 24" and the "functions jointly realized by the sliding seat 70, the housing assembly 80, and the driving assembly 90", and ensuring and improving the performance of the aperture measuring device.

[0134] By adopting the above scheme, when the base 10 and each measuring component 20 are located at the hole to be measured, the driving component 90 can drive the sliding seat 70 to move along the slideway 81 toward one side of the base 10, so that the sliding seat 70 can drive the base 10 to move synchronously toward the direction close to the hole to be measured. During this period, the first shaft 30 can be adaptively axially extended and retracted with the movement of the base 10, so that the first shaft 30 can basically avoid interference and obstruction to the movement of the sliding seat 70 and the base 10. During this period, the first rotating member 40 can also drive the first shaft 30 to rotate in the positive direction, so as to reel up the flexible member 24 of each measuring component 20 through the first shaft 30, so that the flexible member 24 can pull the corresponding abutment member 21, so that the abutment member 21 of each measuring component 20 can move toward the side close to the corresponding elastic member 22 at the same time, and actively "contract". In this way, it is convenient for the base 10 and each measuring component 20 to quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the aperture measuring device.

[0135] By adopting the above scheme, when each measuring component 20 has entered the hole to be measured, the first rotating member 40 exposed outside the housing component 80 can be used to drive the first shaft 30 to rotate in the opposite direction, so as to unwind the flexible member 24 of each measuring component 20 through the first shaft 30, and release the pulling force and resistance of the flexible member 24 on the abutment member 21, thereby basically avoiding the flexible member 24 from interfering with and hindering the measuring operation of each measuring component 20. On this basis, the driving component 90 can also drive the sliding seat 70 to move along the slideway 81, so that the base 10 can move along the hole depth direction of the hole to be measured under the drive of the sliding seat 70, so as to drive each measuring component 20 to reach the cross section of the hole to be measured at any hole depth, and each measuring component 20 can be stabilized at the cross section of the hole to be measured at any hole depth, so that each measuring component 20 can accurately measure the aperture of the hole to be measured at the cross section. Thus, it can be ensured that the aperture measuring device can freely adjust each measuring component 20 to any hole depth of the hole to be measured, and measure the aperture of the hole to be measured at any hole depth; it can be ensured that the measuring range of the aperture measuring device can cover the entire hole depth of the hole to be measured; it can be convenient for the aperture measuring device to fit the hole to be measured at any hole depth; it can be ensured that the aperture measuring device can measure the aperture of the hole to be measured with a larger hole depth. Thus, the measuring range of the aperture measuring device can be expanded, the measuring accuracy of the aperture measuring device on the aperture of the hole to be measured can be improved, and the use performance of the aperture measuring device can be improved.

[0136] See also Figure 3 , Figure 6 In some embodiments of the present application, the first shaft 30 includes at least two first sleeve structures 31 that are coaxially arranged and sleeved in sequence.

[0137] It should be noted that the first shaft 30 includes at least two first sleeve structures 31, each of which is coaxially arranged and sleeved in sequence, so that at least part of the first shaft 30 can be axially retractable. Among any two adjacent first sleeve structures 31, the first sleeve structure 31 with a larger cross-sectional size can be a sleeve structure or can be provided with a hole structure, so that the first sleeve structure 31 with a smaller cross-sectional size can be sleeved into the first sleeve structure 31 with a larger cross-sectional size, so that the first sleeve structure 31 with a smaller cross-sectional size can be relatively retractable relative to the first sleeve structure 31 with a larger cross-sectional size. Wherein, "cross-section" refers to the cross section of the corresponding structure perpendicular to the central axis thereof.

[0138] In some embodiments, among the first sleeve structures 31, the first sleeve structure 31 with the smallest cross-sectional size may be a rod-shaped structure. This configuration can enhance the overall structural strength and rigidity of the first shaft 30 without affecting the telescopic properties of the first sleeve structure 31, thereby ensuring the performance and utility of the first shaft 30. Of course, in other embodiments, among the first sleeve structures 31, the first sleeve structure 31 with the smallest cross-sectional size may be a sleeve structure or other morphological structures.

[0139] By adopting the above scheme, the first shaft 30 can be at least partially axially retractable through at least two first sleeve structures 31 that are coaxially arranged and sleeved in sequence. Based on this, during the period when the sliding seat 70 and the base 10 move synchronously along the slideway 81, it can be ensured that the first shaft 30 can move with the base 10 and be adaptively and smoothly retracted, thereby basically avoiding the first shaft 30 from interfering with and hindering the movement of the sliding seat 70 and the base 10, ensuring the performance and service life of the first shaft 30, and taking into account the protection of "the functions jointly realized by the first rotating member 40, the first shaft 30, and the flexible member 24" and "the functions jointly realized by the sliding seat 70, the housing assembly 80, and the driving assembly 90", and ensuring and improving the performance of the aperture measuring device.

[0140] Of course, in other embodiments, the first shaft 30 may adopt other structural forms to achieve at least partial axial extension and retraction, for example, the first shaft 30 may be at least partially elastic and retractable.

[0141] See also Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, a rack 71 is provided on the peripheral side of the sliding seat 70, and the extension direction of the rack 71 is parallel to the extension direction of the slideway 81. The driving assembly 90 includes a second shaft 91, a second rotating member 92 and a gear 93. The second shaft 91 is mounted on the housing assembly 80. The gear 93 is mounted on the second shaft 91 and meshes with the rack 71. The second rotating member 92 is mounted on one end of the second shaft 91, and is used to drive the second shaft 91 and the gear 93 to rotate synchronously.

[0142] It should be noted that the rack 71 is mounted on the peripheral side of the sliding seat 70, and the rack 71 and the sliding seat 70 can be connected by, but not limited to, welding, bonding, bolt locking connection, etc. The extension direction of the rack 71 corresponds to (i.e., is parallel to) the extension direction of the slideway 81. Under the driving action of the driving assembly 90, the rack 71 and the sliding seat 70 can keep moving synchronously along the slideway 81.

[0143] It should also be noted that the drive assembly 90 includes a second shaft 91, a second rotating member 92 and a gear 93. The second shaft 91 is located on the side of the rack 71 away from the sliding seat 70. The second shaft 91 is mounted on the housing assembly 80 so that the second shaft 91 is in a stable position relative to the housing assembly 80. The second shaft 91 has the freedom to rotate around its central axis.

[0144] The second rotating member 92 is mounted on one end of the second shaft 91 and is a member used to drive the second shaft 91 to rotate around the central axis of the second shaft 91. The second rotating member 92 and the second shaft 91 can be connected by, but not limited to, sleeve connection, snap connection, etc., and the second rotating member 92 and the second shaft 91 rotate synchronously. The second rotating member 92 can be, but not limited to, a knob, a handle, etc. The second rotating member 92 can be driven manually or electrically.

[0145] The gear 93 is mounted on the second shaft 91, and the gear 93 rotates synchronously with the second shaft 91, that is, the second rotating member 92 can drive the second shaft 91 and the gear 93 to rotate synchronously. The gear 93 is meshed with the rack 71, so that when the gear 93 rotates, the rack 71 can be driven to move along the slideway 81. In some embodiments, the gear 93 is directly meshed with the rack 71. Of course, in other embodiments, the gear 93 can be indirectly meshed with the rack 71 via at least one transmission wheel.

[0146] By adopting the above scheme, the second rotating member 92 can be driven to rotate, so that the second shaft 91 and the gear 93 can be driven to rotate synchronously through the second rotating member 92, thereby reliably and smoothly driving the rack 71 and the sliding seat 70 to reciprocate along the slideway 81 through the direct or indirect meshing relationship between the gear 93 and the rack 71. As a result, the driving assembly 90 can conveniently, quickly and smoothly drive the sliding seat 70 to reciprocate along the slideway 81 with a simplified and reliable structure, thereby improving the structural reliability and use performance of the driving assembly 90, and improving the structural reliability, convenience of use and use performance of the aperture measuring device.

[0147] Of course, in other possible implementations, the driving assembly 90 may adopt other structural forms to drive the sliding seat 70 to move back and forth along the slideway 81. For example, the driving assembly 90 may adopt a drive design such as a cylinder.

[0148] See also Figure 1 , Figure 6 In some embodiments of the present application, the housing assembly 80 is provided with a mounting hole 82, and the second shaft 91 is rotatably mounted in the mounting hole 82. The second rotating member 92 is stopped at one side opening of the mounting hole 82. The driving assembly 90 includes a stopper 94. The stopper 94 is mounted at one end of the second shaft 91 away from the second rotating member 92, and is stopped at the other side opening of the mounting hole 82.

[0149] It should be noted that the housing assembly 80 is provided with a mounting hole 82, which passes through the housing assembly 80 along the extension direction of the mounting hole 82, and the mounting hole 82 is used to install the second shaft 91. The second shaft 91 is installed in the mounting hole 82, and the extension direction of the second shaft 91 corresponds to the extension direction of the mounting hole 82. The second shaft 91 has the freedom to rotate around the central axis of the second shaft 91 in the mounting hole 82. The mounting hole 82 has a mounting port 821 connected to the slideway 81, and the mounting port 821 is used to install the gear 93.

[0150] In some embodiments, in order to facilitate the assembly of the second shaft 91 and the gear 93 mounted thereon to the housing assembly 80, the housing assembly 80 may include a first housing 84 and a second housing 85 that are separately connected to each other, a first groove 822 is provided on a side of the first housing 84 close to the second housing 85, and the first groove 822 is set through along its extension direction, and a second groove 823 is provided on a side of the second housing 85 close to the first housing 84, and the second groove 823 is set through along its extension direction, and the second groove 823 and the first groove 822 can be mutually aligned when the first housing 84 and the second housing 85 are separately connected, and together enclose to form a mounting hole 82. Based on this, it is convenient to assemble the second shaft 91 and the gear 93 into the first groove 822 before the first housing 84 and the second housing 85 are separately connected, and it is convenient to form a mounting hole 82 by enclosing the second groove 823 and the first groove 822 together after the first housing 84 and the second housing 85 are separately connected, so as to achieve the limited installation of the second shaft 91. This can help improve the assembly convenience and efficiency between the housing assembly 80 and the drive assembly 90.

[0151] It should also be noted that one end of the second shaft 91 for mounting the second rotating member 92 passes through the corresponding hole of the mounting hole 82. The second rotating member 92 is mounted on the end of the second shaft 91. In this case, the second rotating member 92 can be stopped at the side hole of the mounting hole 82 to limit the second shaft 91 from moving along the mounting hole 82 toward the side away from the second rotating member 92.

[0152] Correspondingly, the end of the second shaft 91 away from the second rotating member 92 also passes through the corresponding opening of the mounting hole 82. The stopper 94 is installed at the end of the second shaft 91, and is a component used to limit and position the end of the second shaft 91. In this case, the stopper 94 can stop and limit the opening of the side of the mounting hole 82 to limit the second shaft 91 from moving along the mounting hole 82 toward the side close to the second rotating member 92.

[0153] Based on this, the “second rotating member 92 is stopped at one side of the mounting hole 82” and the “stop member 94 is stopped at the other side of the mounting hole 82” can be combined to achieve limiting and positioning of the relative ends of the second shaft 91, so as to ensure that the second shaft 91 can maintain a stable axial position relative to the mounting hole 82, thereby stabilizing the relative position of the gear 93, and stabilizing the stability and reliability of the meshing cooperation between the gear 93 and the rack 71.

[0154] By adopting the above scheme, the housing assembly 80 can be provided with the second shaft 91 through the mounting hole 82 to preliminarily stabilize the mounting position of the second shaft 91 and the drive assembly 90 relative to the housing assembly 80. On this basis, the drive assembly 90 can be mounted on one end of the second shaft 91 through the second rotating member 92 and stoppered at one side of the mounting hole 82, and can also be mounted on the other end of the second shaft 91 through the stopper 94 and stoppered at the other side of the mounting hole 82. Based on this, the second rotating member 92 and the stopper 94 can be used to limit and position the opposite ends of the second shaft 91, so as to ensure that the second shaft 91 can stabilize the axial position relative to the mounting hole 82, and limit the axial movement of the second shaft 91 along the mounting hole 82. In this way, the relative position of the gear 93 mounted on the second shaft 91 can be stabilized, so as to stabilize the stability and reliability of the meshing cooperation between the gear 93 and the rack 71, and to ensure and improve the performance and reliability of the drive assembly 90, and to ensure the driving effect of the drive assembly 90 on the sliding seat 70.

[0155] See also Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, a reference platform 83 is provided at one end of the shell component 80 close to the base 10, and a reference surface 831 is provided on one side of the reference platform 83 close to the base 10, and the reference surface 831 is parallel to the cross-section of the base 10 where each measuring component 20 is located.

[0156] It should be noted that, during the period when the sliding seat 70 slides on the slideway 81, the end of the housing component 80 provided with the passage opening of the slideway 81 will be closer to the base 10 than the other end of the housing component 80. Therefore, the end of the housing component 80 provided with the passage opening of the slideway 81 is the end of the housing component 80 close to the base 10.

[0157] A reference platform 83 is provided at one end of the housing assembly 80 close to the base 10. The reference platform 83 may be an annular structure provided at the corresponding end of the housing assembly 80, or may be a structure of other shapes. The reference platform 83 may serve as a positioning reference for the housing assembly 80, and is used for positioning, abutting, and stopping at one side of the hole to be measured. In particular, the reference platform 83 has a reference surface 831 on one side close to the base 10, and the reference surface 831 is a flat plane. The surface of the base 10 may serve as a more accurate and precise positioning reference, and is used for fittingly abutting against the end surface provided with the hole to be measured.

[0158] The reference surface 831 can be made perpendicular to the central axis of the base 10 so that the reference surface 831 is parallel to the cross section of the base 10, and the reference surface 831 is parallel to the cross section of the base 10 where each measuring component 20 is located. Based on this, when the reference surface 831 is closely attached to the end surface where the orifice of the hole to be measured is provided, the reference surface 831 can be made substantially parallel to the cross section of the hole to be measured, so that each measuring component 20 located on the same cross section of the base 10 can be located on the same cross section of the hole to be measured when entering the hole to be measured.

[0159] By adopting the above scheme, when the base 10 is located at the hole to be measured, by positioning the reference surface 831 of the reference platform 83 in a close fit against the end surface of the hole to be measured, the housing component 80 can be made to be stable in position and state relative to the hole to be measured, and the reference surface 831 can be made parallel to the cross section of the hole to be measured. Since the reference surface 831 is parallel to the cross section of the base 10 where each measuring component 20 is located, it can be ensured that each measuring component 20 located on the same cross section of the base 10 can be located on the same cross section of the hole to be measured during the period of entering the hole to be measured, so that each measuring component 20 can reach any cross section of the hole to be measured and measure the aperture of the hole to be measured at the cross section. As a result, the convenience and performance of the aperture measuring device can be effectively improved, and the measurement accuracy of the aperture of the hole to be measured by each measuring component 20 can be effectively guaranteed and improved.

[0160] See also Figure 3 , Figure 4 , Figure 7 In some embodiments of the present application, the measuring assembly 20 includes a telescopic member 25, one end of the telescopic member 25 is connected to the abutment member 21, and the other end of the telescopic member 25 is connected to the peripheral wall 11 of the base 10, and at least a portion of the telescopic member 25 is axially retractable.

[0161] It should be noted that one end of the telescopic member 25 is connected to one end of the abutting member 21 close to the elastic member 22, and the other end of the telescopic member 25 is connected to the peripheral wall 11 of the base 10. The telescopic member 25 is a component for supporting the abutting member 21. In addition, the elastic member 22 is disposed inside the telescopic member 25, and the telescopic member 25 is also a component for hiding and protecting the elastic member 22.

[0162] In order to reduce the risk of the telescopic member 25 interfering with the elastic deformation of the elastic member 22 and the movement of the abutment member 21, at least a portion of the telescopic member 25 can be axially retracted, that is, at least a portion of the telescopic member 25 can be extended or shortened in its axial direction. Based on this, during the period when the abutment member 21 is forced to move, the telescopic member 25 can be adaptively retracted with the movement of the abutment member 21.

[0163] By adopting the above scheme, the measuring component 20 can support the abutment 21 through the telescopic member 25 connected between the abutment 21 and the peripheral wall 11 of the base 10, and hide and protect the elastic member 22 in the telescopic member 25. Based on this, it is beneficial to ensure the effectiveness of the abutment 21, to ensure and extend the service life of the elastic member 22, and to ensure and extend the service life of each measuring component 20 and the aperture measuring device. In addition, since at least part of the telescopic member 25 can be axially retractable, during the period when the abutment 21 is forced to move toward or away from the side of the elastic member 22, the telescopic member 25 can be adaptively retracted with the movement of the abutment 21, thereby basically avoiding the interference of the telescopic member 25 with the elastic deformation of the elastic member 22 and the movement of the abutment 21, and ensuring the performance of the measuring component 20.

[0164] Of course, in other embodiments, the telescopic member 25 may be omitted from the measuring component 20 .

[0165] See also Figure 3 , Figure 4 , Figure 7 In some embodiments of the present application, the telescopic member 25 includes at least two second sleeve structures 251 that are coaxially arranged and sleeved in sequence.

[0166] It should be noted that the telescopic member 25 includes at least two second sleeve structures 251, each of which is coaxially arranged and sleeved in sequence, so that at least part of the telescopic member 25 can be axially telescopic. In any two adjacent second sleeve structures 251, the second sleeve structure 251 with a larger cross-sectional size can be a sleeve structure or can be provided with a hole structure, so that the second sleeve structure 251 with a smaller cross-sectional size can be sleeved into the second sleeve structure 251 with a larger cross-sectional size, so that the second sleeve structure 251 with a smaller cross-sectional size can be relatively telescopic relative to the second sleeve structure 251 with a larger cross-sectional size. Wherein, "cross section" refers to the cross section of the corresponding structure perpendicular to the central axis thereof.

[0167] Among the second sleeve structures 251 , the second sleeve structure 251 with the smallest cross-sectional size may be, but is not limited to, a sleeve structure, a rod-shaped structure, or other structures.

[0168] By adopting the above solution, the telescopic member 25 can be at least partially axially retractable through at least two second sleeve structures 251 that are coaxially arranged and sleeved in sequence. Based on this, when the abutment member 21 is forced to move toward or away from the elastic member 22, it can be ensured that the telescopic member 25 can adaptably and smoothly retract with the movement of the abutment member 21, thereby basically avoiding the telescopic member 25 from interfering with or hindering the elastic deformation of the elastic member 22 and the movement of the abutment member 21, thereby ensuring the performance and service life of the telescopic member 25, and ensuring the performance of the measuring assembly 20.

[0169] Of course, in other embodiments, the telescopic member 25 may adopt other structural forms to achieve at least partial axial telescopicity, for example, it may be made at least partially telescopically elastic, etc.

[0170] See also Figure 3 , Figure 4 , Figure 7 In some embodiments of the present application, the abutment member 21 includes an abutment head 211 and an abutment seat 212 , the abutment seat 212 is connected to the elastic member 22 , and the abutment head 211 is detachably connected to a side of the abutment seat 212 away from the elastic member 22 .

[0171] It should be noted that the abutment seat 212 is connected to one end of the elastic member 22 away from the conversion element 23. The abutment seat 212 is a component for supporting and fixing the abutment joint 211. The abutment joint 211 is detachably connected to the side of the abutment seat 212 away from the elastic member 22. The abutment joint 211 is a component for abutting against the hole wall of the hole to be measured. Among them, the abutment joint 211 can be detachably connected to the abutment seat 212 by means of, but not limited to, threaded connection and the like. Among them, the shape and size of the abutment seat 212 can be flexibly designed; the shape and size of the abutment joint 211 can be flexibly designed.

[0172] By adopting the above scheme, the abutment member 21 can be connected to the elastic member 22 through the abutment seat 212 and support the abutment head 211. The abutment member 21 can also abut against the hole wall of the hole to be measured through the abutment head 211 detachably connected to the abutment seat 212 during the period when the measuring component 20 enters the hole to be measured, so that the measuring component 20 can measure the aperture of the hole to be measured. In this way, the performance of the abutment member 21 can be guaranteed. In addition, since the abutment head 211 and the abutment seat 212 are detachably connected, the abutment head 211 can be easily replaced as needed, thereby effectively reducing the risk of affecting the data accuracy of the measuring component 20 due to severe wear of the abutment head 211, the measurement accuracy of the measuring component 20 can be guaranteed, and the service life of the measuring component 20 can be guaranteed and extended.

[0173] Of course, in other embodiments, the abutment member 21 may adopt other structural forms, for example, it may be an integral component.

[0174] See also Figure 3 , Figure 4 , Figure 7 In some embodiments of the present application, the side of the abutting member 21 away from the elastic member 22 has an abutting surface 2111, and the abutting surface 2111 is an arc surface.

[0175] It should be noted that the side of the abutting member 21 away from the elastic member 22 has an abutting surface 2111. The abutting surface 2111 is a surface used to abut against the hole wall of the measuring hole. The abutting surface 2111 is an arc surface.

[0176] By adopting the above scheme, during the period when the measuring component 20 enters the hole to be measured, the abutment member 21 can abut against the hole wall of the hole to be measured through the abutment surface 2111 in the form of an arc surface, and form point contact or line contact with the hole wall of the hole to be measured. Based on this, it can be ensured that the abutment member 21 can be closely and closely abutted to the hole wall of the hole to be measured through the abutment surface 2111, and the risk of the abutment surface 2111 and the hole wall of the hole to be measured are reduced, thereby ensuring and improving the accuracy of the data measured by the measuring component 20, and ensuring and improving the measurement accuracy of the measuring component 20. In addition, based on the abutment surface 2111 in the form of an arc surface, the contact area between the abutment member 21 and the hole wall of the hole to be measured can also be reduced accordingly, thereby reducing the degree of wear of the abutment member 21, and ensuring and extending the service life of the abutment member 21 and the measuring component 20.

[0177] See also Figure 4 , Figure 6 , Figure 7 In some embodiments of the present application, the base 10 includes a second limiting structure 14 , and the second limiting structure 14 is arranged in a one-to-one correspondence with the conversion element 23 , and is used for limiting the installation of the corresponding conversion element 23 .

[0178] It should be noted that the base 10 is provided with a second limiting structure 14. The number of second limiting structures 14 is equal to the number of conversion elements 23. The setting position of the second limiting structure 14 corresponds to the setting position of the conversion element 23. The second limiting structure 14 is used to limit the installation of the conversion element 23 one by one. The structure of the second limiting structure 14 can be designed in a variety of ways. For example, the second limiting structure 14 can be a hole-shaped structure, or a groove-shaped structure, etc. In the case where the conversion element 23 is limitedly installed in the second limiting structure 14, the fit between the conversion element 23 and the second limiting structure 14 can be a clearance fit, a transition fit, or an interference fit.

[0179] By adopting the above solution, the second limiting structure 14 can be provided on the base 10, so as to limit the installation of the conversion element 23 through the second limiting structure 14. Based on this, the installation position and installation state of the conversion element 23 relative to the base 10 can be conveniently, effectively and reliably stabilized, so that the conversion element 23 can stably, reliably and accurately convert the value of the force applied to it by the elastic member 22 into a relevant electrical signal.

[0180] See also Figure 4 , Figure 6 , Figure 7 In some embodiments of the present application, the second limiting structure 14 includes two limiting members 141 arranged opposite to each other, and a limiting groove 1411 is provided on one side of the limiting member 141 facing the other limiting member 141, and the limiting groove 1411 is connected to the outside at one end of its extension direction, and the conversion element 23 is inserted into the limiting grooves 1411 of the two limiting members 141.

[0181] It should be noted that the second limiting structure 14 includes two limiting members 141. The two limiting members 141 are arranged opposite to each other and are used together to limit the installation of a conversion element 23. A limiting groove 1411 is provided on the side of each limiting member 141 facing the other limiting member 141. The limiting grooves 1411 of the two limiting members 141 connect the same end along the extension direction to the outside. Based on this, the conversion element 23 can be inserted into the two limiting grooves 1411 from the ends of the two limiting grooves 1411 connected to the outside, so that the opposite sides of the conversion element 23 can be respectively limited and installed in the limiting grooves 1411 of the two limiting members 141.

[0182] In this case, one side of the conversion element 23 can be installed in a limited position in the limiting groove 1411 of one limiting member 141, and the other side of the conversion element 23 can be installed in a limited position in the limiting groove 1411 of another limiting member 141. In addition, the middle part of the conversion element 23 can be exposed in the space between the two limiting members 141 to ensure that the middle part of the conversion element 23 is not constrained by the second limiting structure 14.

[0183] By adopting the above scheme, the second limiting structure 14 can be provided through two relatively arranged limiting members 141, especially through the limiting grooves 1411 of the two limiting members 141, for the conversion element 23 to be inserted therein, so as to limit the installation of the conversion element 23. Based on this, the installation position and installation state of the conversion element 23 relative to the base 10 can be conveniently, effectively and reliably stabilized. On this basis, the second limiting structure 14 can also expose the middle part of the conversion element 23 through the space between the two limiting members 141, and avoid constraining the middle part of the conversion element 23. Based on this, it is convenient for the middle part of the conversion element 23 to connect with the elastic member 22, and it is convenient for the middle part of the conversion element 23 to convert the value of the force applied by the elastic member 22 to it into a related electrical signal, so as to effectively reduce the influence of the second limiting structure 14 on the accuracy of the data converted by the conversion element 23, and to ensure and improve the measurement accuracy of the conversion element 23 and the measuring assembly 20.

[0184] See also Figure 1 , Figure 2 In some embodiments of the present application, each measuring component 20 is arranged in an equiangular circle around the central axis of the base 10.

[0185] It should be noted that each measuring assembly 20 is arranged in an equiangular circle around the central axis of the base 10, that is, each measuring assembly 20 is arranged in a circular array around the central axis of the base 10. For example, when there are two measuring assemblies 20, the two measuring assemblies 20 are arranged in an equiangular circle around the central axis of the base 10, so that the two measuring assemblies 20 are relatively distributed on opposite sides of the central axis of the base 10, so that the angle formed between the two measuring assemblies 20 is 180°. For another example, when there are three measuring assemblies 20, the three measuring assemblies 20 are arranged in an equiangular circle around the central axis of the base 10, so that the angle formed between every two adjacent measuring assemblies 20 is 60°.

[0186] By adopting the above scheme, on the basis that each measuring component 20 is located on the same cross section of the base 10, each measuring component 20 can be arranged in an equiangular circumference around the central axis of the base 10 to effectively balance and optimize the layout of each measuring component 20. Based on this, when each measuring component 20 enters the hole to be measured with the base 10 and the central axis of the base 10 is substantially parallel to the central axis of the hole to be measured, the apertures of at least two radial directions distributed in a circumferential array on the same cross section of the hole to be measured can be accurately measured by the evenly distributed measuring components 20, so that the measurement data of each measuring component 20 can be integrated to fit a more accurate aperture, which can improve the measurement accuracy of the aperture measuring device for the aperture of the hole to be measured, and make the aperture measuring device particularly suitable for measuring the aperture of the hole to be measured that is a circular hole.

[0187] See also Figure 1 , Figure 2In some embodiments of the present application, three measuring components 20 are provided.

[0188] By adopting the above scheme, the number of measuring components 20 can be optimized by providing three measuring components 20 on the basis that each measuring component 20 is located on the same cross section of the base 10. Based on this, when each measuring component 20 enters the hole to be measured with the base 10 and the central axis of the base 10 is substantially parallel to the central axis of the hole to be measured, the aperture of the hole to be measured in three radial directions of the same cross section can be accurately measured by three measuring components 20, so that the measurement data of the three measuring components 20 can be integrated to fit a more accurate aperture, which can reduce errors and thus improve the measurement accuracy of the aperture of the hole to be measured by the aperture measuring device. In addition, by providing three measuring components 20, the number of measuring components 20 can be reduced accordingly on the basis of improving measurement accuracy and reducing errors, so as to simplify the structure of the aperture measuring device and reduce costs.

[0189] Of course, in other embodiments, two, four, five, etc. measurement components 20 may be provided.

[0190] See also Figure 3 , Figure 4 In some embodiments of the present application, the conversion element 23 includes a strain gauge.

[0191] It should be noted that the strain gauge is a component used to measure strain. When the elastic member 22 is connected to the strain gauge, the strain gauge can withstand the force applied by the elastic member 22, adaptively strain, and convert the strain into a related electrical signal (such as a resistance value).

[0192] By adopting the above solution, the conversion element 23 adopts a strain gauge, so that the strain gauge can bear the force applied to it by the elastic member 22, and sensitively and adaptively generate strain, and respond in time to convert the strain into a relevant electrical signal. Based on this, the sensitivity, response speed and measurement accuracy of the conversion element 23 can be guaranteed and improved, thereby improving the measurement accuracy and measurement speed of the aperture measuring device for the aperture of the hole to be measured.

[0193] Of course, in other embodiments, the conversion element 23 may be, but is not limited to, a diaphragm, a strain beam, etc.

[0194] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measurement device includes a processor 110 and an electrical connector 100 , the electrical connector 100 electrically connects the conversion element 23 to the processor 110 , and the processor 110 is used to receive and process conversion data of the conversion element 23 .

[0195] It should be noted that each conversion element 23 may be connected to at least one electrical connector 100. The electrical connector 100 is a component for electrically connecting the conversion element 23 to the processor 110. The electrical connector 100 may be, but is not limited to, a cable, a flexible circuit board, etc. The electrical connector 100 corresponding to each conversion element 23 is electrically connected to the processor 110. The processor 110 is a component for receiving the conversion data of the conversion element 23 and processing the received data.

[0196] In some embodiments, the processor 110 and the electrical connector 100 are both disposed in the housing assembly 80, so as to hide and protect the processor 110 and the electrical connector 100 via the housing assembly 80. In some embodiments, the housing assembly 80 may include a third housing 86, which may be separately connected to other parts of the housing assembly 80, so as to facilitate assembly of the processor 110 and other components in the third housing 86.

[0197] By adopting the above scheme, on the basis of each conversion element 23 measuring the elastic force of the elastic member 22 acting on it, the aperture measuring device can transmit the conversion data of each conversion element 23 to the processor 110 through each electrical connector 100, and receive and process the conversion data of the conversion element 23 through the processor 110. Based on this, the aperture measuring device can complete the measurement operation and data processing operation by itself, and can directly reflect the aperture of the hole to be measured without the help of an external analysis instrument, thereby effectively improving the convenience and performance of the aperture measuring device.

[0198] Of course, in other embodiments, the processor 110 can be used as an external component independent of the aperture measurement device. Even, the processor 110 can be used as a component of an external analytical instrument. In this case, the aperture measurement device can be externally connected to the external analytical instrument so that the external analytical instrument receives and processes the conversion data of the conversion element 23.

[0199] See also Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measurement device includes a display 120 , which is electrically connected to the processor 110 and is used to receive and display processing data of the processor 110 .

[0200] It should be noted that the display 120 is a display tool that displays electronic files on a screen through a specific transmission device. The display 120 is electrically connected to the processor 110. The display 120 can receive data processed by the processor 110 and display the received data on the screen.

[0201] In some embodiments, the display 120 is installed in the shell assembly 80, and the screen of the display 120 is exposed outside the shell assembly 80. Such a configuration can facilitate stabilizing the installation position and installation state of the display 120, facilitate establishing a stable electrical connection relationship between the display 120 and the processor 110, and facilitate the display 120 to display related content through the exposed screen.

[0202] By adopting the above solution, on the basis that the processor 110 receives and processes the conversion data of the conversion element 23, the aperture measuring device can receive the data processed by the processor 110 through the display 120 electrically connected to the processor 110, and display the received data on the screen. Based on this, the aperture measuring device itself can complete the measurement operation, data processing operation and data display operation, which can facilitate the operator to intuitively read the aperture of the hole to be measured, thereby effectively improving the convenience and performance of the aperture measuring device.

[0203] Of course, in other embodiments, the aperture measurement device may omit the display 120 and directly connect to an external analysis instrument so that the external analysis instrument receives, processes and displays relevant data.

[0204] See also Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measurement device includes a battery 130 , and the battery 130 is electrically connected to the processor 110 for supplying power to the processor 110 .

[0205] It should be noted that the battery 130 is a component for providing electrical energy. The battery 130 is at least electrically connected to the processor 110 and is used to power the processor 110. In some embodiments, the aperture measurement device includes a display 120, and the battery 130 can also be electrically connected to the display 120 and is also used to power the display 120.

[0206] In some embodiments, the battery 130 is detachably mounted on the housing assembly 80. This arrangement facilitates the disassembly and assembly of the battery 130 to replace the battery 130 or charge the battery 130. In other embodiments, the battery 130 is a rechargeable battery 130, which is encapsulated in the housing assembly 80, and the charging interface of the battery 130 is exposed outside the housing assembly 80, so that an external power source can be connected to the charging interface to charge the battery 130.

[0207] By adopting the above solution, at least during the operation of the aperture measuring device, the processor 110 and other components can be powered by the battery 130 to ensure the reliable operation of the processor 110 and other components. Based on this, the operable time of the aperture measuring device can be guaranteed, and the convenience, reliability and performance of the aperture measuring device can be improved.

[0208] Of course, in other embodiments, the aperture measurement device may omit the battery 130 and directly connect to an external power source so that the processor 110 and other components of the aperture measurement device are powered by the external power source.

[0209] See also Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a switch button 140, and the switch button 140 is electrically connected to the processor 110 for controlling the operation or braking of the processor 110.

[0210] It should be noted that the switch button 140 is electrically connected to the processor 110 , and the switch button 140 is a component for controlling the processor 110 to work (ie, start working) or brake (ie, stop working).

[0211] In some embodiments, the switch button 140 is installed on the shell assembly 80, and at least a portion of the switch button 140 is exposed outside the shell assembly 80. Such a configuration can facilitate stabilizing the installation position and installation state of the switch button 140, facilitate establishing a stable electrical connection relationship between the switch button 140 and the processor 110, and facilitate the operator to press the switch button 140 through the exposed portion.

[0212] By adopting the above solution, the processor 110 can be controlled to start working by the switch button 140 during the operation of the aperture measuring device; and the processor 110 can be controlled to stop working by the switch button 140 during the idle period of the aperture measuring device. Based on this, the energy consumption of the aperture measuring device during the idle period can be saved accordingly on the basis of ensuring the usability of the aperture measuring device, and the operable time of the aperture measuring device can be extended accordingly.

[0213] Of course, in other embodiments, the aperture measurement device may omit the switch button 140 , and for example, the processor 110 may be powered on or off to control the operation or braking of the processor 110 .

[0214] See also Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a measuring button 150 , which is electrically connected to the conversion element 23 and is used to control the conversion element 23 to work or brake.

[0215] It should be noted that the measuring button 150 is electrically connected to the conversion element 23 , and the measuring button 150 is a component for controlling the conversion element 23 to work (ie, start working) or brake (ie, stop working).

[0216] In some embodiments, the measuring button 150 is installed on the shell assembly 80, and at least a portion of the measuring button 150 is exposed outside the shell assembly 80. Such a configuration can facilitate stabilizing the installation position and installation state of the measuring button 150, can facilitate establishing a stable electrical connection relationship between the measuring button 150 and the conversion element 23, and can facilitate the measuring button 150 to be pressed by the operator through the exposed portion.

[0217] By adopting the above scheme, when each measuring component 20 enters the hole to be measured with the base 10, and each measuring component 20 is stable at a certain cross section of the hole to be measured and is ready to perform a measurement operation, the measuring button 150 can be used to control the conversion element 23 to start the measurement work; and at other non-measurement moments, the measuring button 150 can be used to control the conversion element 23 to stop working. Based on this, it is convenient for each measuring component 20 to accurately measure the required aperture of the hole to be measured, and it is helpful to save the energy consumption of the aperture measurement device during the idle period.

[0218] Of course, in other embodiments, the aperture measurement device may omit the measurement button 150 , for example, the conversion element 23 may always maintain a working state.

[0219] See also Figure 1-Figure 7 Based on the above embodiments, the present application provides a specific example of an aperture measurement device.

[0220] The aperture measuring device includes a housing assembly 80. The housing assembly 80 includes a first housing 84, a second housing 85, and a third housing 86 which are connected in sequence. A reference platform 83 in an annular shape is provided at one end of the first housing 84 away from the second housing 85, and a reference surface 831 is formed at the side of the reference platform 83 away from the second housing 85. The housing assembly 80 is provided with a slideway 81, which extends from the reference surface 831 to the inside of the third housing 86 along the extension direction of the housing assembly 80, and one end of the slideway 81 close to the reference surface 831 is connected to the outside of the housing assembly 80. A first groove 822 is provided on one side of the first housing 84 close to the second housing 85, and the first groove 822 is provided along the extension direction thereof. A second groove 823 is provided on one side of the second housing 85 close to the first housing 84, and the second groove 823 is provided along the extension direction thereof. When the first housing 84 and the second housing 85 are connected in separate parts, the second groove 823 and the first groove 822 can be aligned with each other and enclose together to form a mounting hole 82. The mounting hole 82 has a mounting opening 821 connected to the slideway 81. A third through hole 861 is provided on a side of the third housing 86 away from the second housing 85. The third through hole 861 connects the slideway 81 to the outside of the housing assembly 80.

[0221] The aperture measuring device includes a driving assembly 90. The driving assembly 90 includes a second shaft 91, a gear 93, a second rotating member 92 and a stopper 94. The second shaft 91 is mounted on the mounting hole 82. The gear 93 is mounted on the second shaft 91 and is aligned with the mounting opening 821. The second rotating member 92 is mounted on one end of the second shaft 91, and the second rotating member 92, the second shaft 91 and the gear 93 rotate synchronously. The second rotating member 92 is stopped at one side of the mounting hole 82. The stopper 94 is mounted on the other end of the second shaft 91 and is stopped at the other side of the mounting hole 82.

[0222] The aperture measuring device includes a sliding seat 70 and a base 10. The base 10 is mounted on one end of the sliding seat 70, and the base 10 and the sliding seat 70 can form a rod shape together. The sliding seat 70 is slidably mounted on the slideway 81. A rack 71 is provided on the side of the sliding seat 70 facing the gear 93, and the rack 71 is extended along the extension direction of the sliding seat 70, and the rack 71 is meshed and connected with the gear 93. A fourth through hole 72 is provided on one end of the sliding seat 70 away from the base 10, and the fourth through hole 72 connects the internal space of the sliding seat 70 to the outside of the sliding seat 70.

[0223] The aperture measuring device includes three measuring components 20. The three measuring components 20 are located on the same cross section of the base 10, and the cross section is parallel to the reference plane 831. The three measuring components 20 are arranged in an equiangular circle around the central axis of the base 10. Each measuring component 20 includes an abutment member 21, an elastic member 22, a conversion element 23, a flexible member 24 and a telescopic member 25. The base 10 is provided with a first through hole 111 corresponding to each elastic member 22, and the first through hole 111 connects the inside and the outside of the base 10.

[0224] In each measuring component 20: the abutment member 21 includes an abutment head 211 and an abutment seat 212, and the abutment head 211 is detachably connected to the abutment seat 212. The side of the abutment head 211 away from the abutment seat 212 has an abutment surface 2111, and the abutment surface 2111 is an arc surface. The side of the abutment seat 212 away from the abutment head 211 is connected to one end of the elastic member 22. The elastic member 22 is arranged in the first through hole 111, and the extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10. One end of the elastic member 22 away from the abutment seat 212 is connected to the conversion element 23. The conversion element 23 is installed in the base 10. The conversion element 23 is penetrated by a second through hole 231. The flexible member 24 is arranged in the corresponding first through hole 111 and the second through hole 231. One end of the flexible member 24 is connected to the abutment seat 212. The telescopic member 25 is sleeved on the outer periphery of the elastic member 22, one end of the telescopic member 25 is connected to the abutment member 21, and the other end of the telescopic member 25 is connected to the peripheral wall 11 of the base 10. The telescopic member 25 includes two second sleeve structures 251 that are coaxially arranged and sleeved in sequence, and the two second sleeve structures 251 are both sleeve-shaped. Based on the two second sleeve structures 251, the telescopic member 25 can adaptively perform axial expansion and contraction with the movement of the abutment member 21.

[0225] The base 10 is provided with a second limiting structure 14 corresponding to each conversion element 23. The second limiting structure 14 includes two limiting members 141 arranged opposite to each other, and each limiting member 141 is provided with a limiting groove 1411 on one side facing the other limiting member 141, and one end of the limiting groove 1411 close to the sliding seat 70 is connected to the outside of the limiting member 141. The opposite sides of the conversion element 23 are respectively limitedly installed in the two limiting grooves 1411 corresponding to the second limiting structure 14.

[0226] The aperture measuring device includes a first shaft 30 and a first rotating member 40. One end of the first shaft 30 is erected on the base 10. The other end of the first shaft 30 passes through the third through hole 861 and the fourth through hole 72 to the outside of the shell assembly 80, and is connected to the first rotating member 40. The first rotating member 40 and the first shaft 30 rotate synchronously. One end of each flexible member 24 away from the abutment member 21 is connected to the circumferential side of the first shaft 30. The first shaft 30 includes three first sleeve structures 31 that are coaxially arranged and sleeved in sequence. The first sleeve structure 31 closest to the base 10 is rod-shaped, and the remaining two first sleeve structures 31 are sleeve-shaped. Based on the three first sleeve structures 31, the first shaft 30 can be axially extended and retracted with the movement adaptability of the base 10.

[0227] The aperture measuring device includes a first bearing 50 and a second bearing 60. The first bearing 50 is sleeved on the outer periphery of the end of the first shaft 30 close to the base 10, and correspondingly, the base 10 is provided with a first limiting structure 13 for limiting the installation of the first bearing 50. The second bearing 60 is sleeved on the outer periphery of the end of the first shaft 30 away from the base 10, and the second bearing 60 can be installed on the inner side of the third housing 86.

[0228] The aperture measuring device includes an electrical connector 100, a processor 110, a display 120, a battery 130, a switch button 140 and a measuring button 150. The processor 110 is installed in the third housing 86. Each electrical connector 100 electrically connects each conversion element 23 to the processor 110. The processor 110 can be used to receive and process the conversion data of the conversion element 23. The display 120 is installed in the third housing 86, and the screen of the display 120 is exposed outside the third housing 86. The display 120 is electrically connected to the processor 110, and the display 120 can be used to receive and display the processing data of the processor 110. The battery 130 is installed in the third housing 86. The battery 130 is electrically connected to the processor 110 and the display 120, and the battery 130 is used to power the processor 110 and the display 120. The switch button 140 is installed in the third housing 86, and at least a part of the switch button 140 is exposed outside the third housing 86. The switch button 140 is electrically connected to the processor 110, and the switch button 140 can be used to control the operation or braking of the processor 110. The measuring button 150 is installed on the third housing 86, and at least a part of the measuring button 150 is exposed outside the third housing 86. The measuring button 150 is electrically connected to the conversion element 23, and the measuring button 150 can be used to control the operation or braking of the conversion element 23.

[0229] Based on the above structure, when the base 10 and each measuring component 20 are located at the hole to be measured, the second rotating member 92 can drive the second shaft 91 and the gear 93 to rotate synchronously, so as to drive the sliding seat 70 and the base 10 to move synchronously along the slideway 81 toward the direction close to the hole to be measured through the meshing relationship between the gear 93 and the rack 71. During this period, the first rotating member 40 can also drive the first shaft 30 to rotate, so as to roll up the flexible member 24 of each measuring component 20 through the first shaft 30, so that the flexible member 24 can pull the corresponding abutment member 21, so that the abutment member 21 of each measuring component 20 can move toward the side close to the corresponding elastic member 22 at the same time, and actively "contract". In this way, the base 10 and each measuring component 20 can be easily and smoothly entered into the hole to be measured, thereby improving the convenience and performance of the aperture measuring device.

[0230] When each measuring component 20 first enters the hole to be measured, the reference surface 831 of the reference platform 83 can be positioned and abutted against the end surface of the hole to be measured, so that the position and state of the housing component 80 relative to the hole to be measured are determined and stabilized, and the reference surface 831 is parallel to the cross section of the hole to be measured. In this way, it can be ensured that each measuring component 20 located on the same cross section of the base 10 can be located on the same cross section of the hole to be measured when entering the hole to be measured.

[0231] When each measuring component 20 initially enters the hole to be measured, the first rotating member 40 can also drive the first shaft 30 to rotate, so as to unwind the flexible member 24 of each measuring component 20 through the first shaft 30, thereby releasing the pulling force and resistance of the flexible member 24 on the abutment member 21, thereby basically avoiding the flexible member 24 from interfering with or hindering the measuring operation of each measuring component 20.

[0232] On the basis that the reference surface 831 is positioned and abutted against the end surface of the hole to be measured, and the flexible member 24 releases the pulling force and resistance to the abutment member 21, the driving assembly 90 can also drive the sliding seat 70 to move along the slideway 81, so that the base 10 can be driven by the sliding seat 70 to move along the hole depth direction of the hole to be measured, thereby driving each measuring assembly 20 to reach the cross section of the hole to be measured at any hole depth, and each measuring assembly 20 can be stabilized at the cross section of the hole to be measured at any hole depth. In this way, it can be ensured that the measurement range of the aperture measuring device can cover the entire hole depth of the hole to be measured, and it can be ensured that the aperture measuring device can freely adjust each measuring assembly 20 to any hole depth of the hole to be measured, and measure the aperture of the hole to be measured at any hole depth. In this way, the measurement range of the aperture measuring device can be expanded, the aperture measuring device can be convenient for fitting the aperture of the hole to be measured at any hole depth, the measurement accuracy of the aperture measuring device on the aperture of the hole to be measured can be improved, and the use performance of the aperture measuring device can be improved. Furthermore, since the sliding seat 70 has a larger moving range along the slideway 81, the base 10 and each measuring component 20 can also have a larger moving range, so that the aperture measuring device can measure the aperture of a hole with a larger hole depth, thereby expanding the measuring range of the aperture measuring device.

[0233] When each measuring component 20 is stabilized at the cross section of the hole to be measured at any depth, each measuring component 20 can elastically abut the abutment member 21 through the elastic member 22, so that the abutment member 21 can adaptively abut against the hole wall of the hole to be measured, thereby reducing the risk that the abutment member 21 does not abut against the hole wall of the hole to be measured, and reducing the risk that each measuring component 20 measures at the same time but each abutment member 21 does not abut against the hole wall of the hole to be measured at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measuring component 20. At the same time, each measuring component 20 can measure the elastic force of the elastic member 22 reacting on the conversion element 23 through the conversion element 23, and can convert it into a related electrical signal. On this basis, the aperture measurement device can transmit the electrical signal output by the conversion element 23 to the processor 110 through the electrical connector 100, and receive and process the conversion data of each conversion element 23 through the processor 110, and receive and display the processing data of the processor 110 through the display 120. During the period when the processor 110 processes data, according to the calculation formula of the elastic force, the processor 110 can convert the conversion data of each conversion element 23 into the deformation amount of the corresponding elastic member 22. Since the extension direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10, the deformation amount of the corresponding elastic member 22 can reflect the deformation amount of the corresponding elastic member 22 in the corresponding radial direction of the base 10, so as to reflect the aperture of the hole to be measured in the radial direction of each corresponding elastic member 22 on the same cross section. Therefore, the aperture measuring device can conveniently, quickly and accurately measure the aperture of the hole to be measured, and can even fit a more accurate aperture by integrating the measurement data, so as to improve the measurement accuracy and efficiency of the aperture measuring device for the aperture of the hole to be measured.

[0234] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pore size measuring device, characterized in that: include: Pedestal; There are at least two measuring components, each of which is located on the same cross-section of the base. The measuring components include an abutment, an elastic member and a conversion element. The conversion element is installed on the base, one end of the elastic member is connected to the abutment, and the other end of the elastic member is connected to the conversion element. The extension direction of the elastic member is parallel to the corresponding radial direction of the base.

2. The aperture measuring device according to claim 1, characterized in that: A first through hole is passed through the peripheral wall of the base, and the first through holes are arranged in a one-to-one correspondence with the elastic members, and the elastic members are inserted into the corresponding first through holes; the conversion element is installed in the base.

3. The aperture measuring device according to claim 1 or 2, characterized in that: The conversion element is penetrated by a second through hole; the measuring component comprises a flexible member, the flexible member is penetrated corresponding to the second through hole, and one end of the flexible member is connected to the abutment member; The aperture measuring device includes a first shaft and a first rotating member, one end of the first shaft is upright on the base, and the other end of the first shaft is connected to the first rotating member; one end of the flexible member away from the abutment member is connected to the first shaft; the first rotating member is used to drive the first shaft to rotate so that the first shaft can reel in or unreel the flexible member.

4. The aperture measuring device according to claim 3, characterized in that: The aperture measuring device includes a first bearing, and the first bearing is sleeved on the outer circumference of the first shaft.

5. The aperture measuring device according to claim 4, characterized in that: The base includes a first limiting structure for limiting the installation of the first bearing.

6. The aperture measuring device according to claim 1 or 2, characterized in that: The aperture measuring device includes a sliding seat, a shell assembly and a driving assembly. The base is connected to one end of the sliding seat. The shell assembly is provided with a slideway. The slideway is extended along the extension direction of the shell assembly. One end of the slideway is connected to the outside. The sliding seat is slidably mounted on the slideway. The driving assembly is mounted on the shell assembly and is used to drive the sliding seat to slide reciprocatingly along the slideway.

7. The aperture measuring device according to any one of claims 3 to 5, characterized in that: The aperture measuring device comprises a sliding seat, a housing assembly and a driving assembly, wherein the base is connected to one end of the sliding seat, the housing assembly is provided with a slideway, the slideway is extended along the extension direction of the housing assembly, one end of the slideway is connected to the outside, the sliding seat is slidably mounted on the slideway, and the driving assembly is mounted on the housing assembly for driving the sliding seat to slide reciprocatingly along the slideway; The first rotating member and the end of the first shaft close to the first rotating member are both exposed outside the housing assembly, and at least a portion of the first shaft is axially retractable.

8. The aperture measuring device according to claim 7, characterized in that: The first shaft includes at least two first sleeve structures which are coaxially arranged and sleeved in sequence.

9. The aperture measuring device according to any one of claims 6 to 8, characterized in that: A rack is provided on the peripheral side of the sliding seat, and the extending direction of the rack is parallel to the extending direction of the slideway; The driving assembly includes a second shaft, a second rotating member and a gear. The second shaft is mounted on the housing assembly. The gear is mounted on the second shaft and meshes with the rack. The second rotating member is mounted on one end of the second shaft to drive the second shaft and the gear to rotate synchronously.

10. The aperture measuring device according to claim 9, characterized in that: The housing assembly is provided with a mounting hole, and the second shaft is rotatably mounted in the mounting hole; The second rotating member stopper is located at a side opening of the mounting hole; The driving assembly includes a stopper, which is installed at an end of the second shaft away from the second rotating member and is located at the other side opening of the mounting hole.

11. The aperture measuring device according to any one of claims 6 to 10, characterized in that: A reference platform is provided at one end of the housing component close to the base, and a reference surface is provided at one side of the reference platform close to the base. The reference surface is parallel to the cross section of the base where each measuring component is located.

12. The aperture measuring device according to any one of claims 1 to 11, characterized in that: The measuring component comprises a telescopic member, one end of which is connected to the abutment member, the other end of which is connected to the peripheral wall of the base, and at least a part of the telescopic member is axially telescopic.

13. The aperture measuring device according to claim 12, characterized in that: The telescopic member comprises at least two second sleeve structures which are coaxially arranged and sleeved in sequence.

14. The aperture measuring device according to any one of claims 1 to 13, characterized in that: The abutting member comprises an abutting head and an abutting seat, the abutting seat is connected to the elastic member, and the abutting head is detachably connected to a side of the abutting seat away from the elastic member.

15. The aperture measuring device according to any one of claims 1 to 14, characterized in that: The abutment member has an abutment surface on one side away from the elastic member, and the abutment surface is an arc surface.

16. The aperture measuring device according to any one of claims 1 to 15, characterized in that: The base includes a second limiting structure, which is arranged in a one-to-one correspondence with the conversion element and is used for limiting the installation of the corresponding conversion element.

17. The aperture measuring device according to claim 16, characterized in that: The second limiting structure includes two limiting members arranged opposite to each other, and a limiting groove is provided on one side of the limiting member facing the other limiting member. The limiting groove is connected to the outside at one end in its extension direction, and the conversion element is plugged into the limiting grooves of the two limiting members.

18. The aperture measuring device according to any one of claims 1 to 17, characterized in that: The measuring components are arranged in equal-angle circles around the central axis of the base.

19. The aperture measuring device according to any one of claims 1 to 18, characterized in that: The measuring components are provided in three.

20. The aperture measuring device according to any one of claims 1 to 19, characterized in that: The conversion element includes a strain gauge.

21. The aperture measuring device according to any one of claims 1 to 20, characterized in that: The aperture measurement device includes a processor and an electrical connector, wherein the electrical connector electrically connects the conversion element to the processor, and the processor is used to receive and process conversion data of the conversion element.

22. The aperture measuring device according to claim 21, characterized in that: The aperture measurement device includes a display, which is electrically connected to the processor and is used to receive and display processing data of the processor; And / or, the aperture measurement device includes a battery, and the battery is electrically connected to the processor for supplying power to the processor; And / or, the aperture measuring device comprises a switch button, the switch button is electrically connected to the processor and is used to control the operation or braking of the processor; And / or, the aperture measuring device includes a measuring button, which is electrically connected to the conversion element and is used to control the operation or braking of the conversion element.

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