Aperture measuring device

Abstract

The application relates to the field of aperture measurement, and provides an aperture measurement device, which comprises a base and at least two measurement assemblies. Each measurement assembly is located on the same cross section of the base. The measurement assembly comprises an abutting piece, an elastic piece and a conversion element. The conversion element is installed on the base. One end of the elastic piece is connected to the abutting piece, and the other end of the elastic piece is connected to the conversion element. The extension 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 each abutting piece can be self-adapted to abut against the hole wall of a to-be-measured hole under the action of the corresponding elastic piece, so that the risk that each measurement assembly is simultaneously measured but each abutting piece does not simultaneously abut against the hole wall of the to-be-measured hole can be reduced, and the measurement data accuracy of each measurement assembly can be guaranteed. In addition, the elastic force of the corresponding elastic piece can be measured through each conversion element, so that the aperture of the to-be-measured hole in the radial direction corresponding to each elastic piece on the same cross section can be obtained, and therefore the measurement precision and the measurement efficiency of the aperture measurement device on the aperture can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aperture measurement, and particularly relates to an aperture measurement device. BACKGROUND

[0002] At present, aperture measurement is usually performed by using a measuring instrument such as an internal diameter micrometer or a vernier caliper. However, in actual measurement, the measurement accuracy of the existing measuring instrument for the aperture is poor. SUMMARY

[0003] The aperture measurement device provided by the embodiments of the application aims to solve the problem of poor measurement accuracy of the existing measuring instrument for the aperture.

[0004] To achieve the above object, the technical scheme adopted by the embodiments of the application is as follows:

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

[0006] a base;

[0007] a plurality of measurement assemblies, each of which is located on the same cross section of the base, and each of the measurement assemblies comprises an abutting member, 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 abutting member, the other end of the elastic member is connected to the conversion element, and the extension direction of the elastic member is parallel to the corresponding radial direction of the base.

[0008] The aperture measurement device provided by the embodiments of the application can conveniently, quickly and accurately measure the aperture of the to-be-measured hole in at least two radial directions on the same cross section of the to-be-measured hole when each measurement assembly enters the to-be-measured hole along with the base, and the central axis of the base is substantially parallel to the central axis of the to-be-measured hole. During the measurement, each measurement assembly can elastically abut against the abutting member through the elastic member, so that the abutting member can be adaptively abutted to the hole wall of the to-be-measured hole, thereby reducing the risk that the abutting member is not abutted to the hole wall of the to-be-measured hole and reducing the risk that each measurement assembly measures at the same time but each abutting member does not abut the hole wall of the to-be-measured hole at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measurement assembly. On this basis, each measurement assembly can measure the elastic force of the elastic member acting on the conversion element through the conversion element, and can convert the elastic force into a related electrical signal to be output to the processor. 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 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 to-be-measured hole in the radial direction where each corresponding elastic member is located on the same cross section. Based on this, the aperture measurement device can conveniently, quickly and accurately measure the aperture of the to-be-measured hole, and even can fit a more accurate aperture by comprehensively measuring the data, thereby improving the measurement accuracy and the measurement efficiency of the aperture measurement device for the aperture of the to-be-measured hole.

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

[0010] By adopting the above scheme, the first through holes are arranged on the peripheral wall of the base, and the elastic members are arranged through the corresponding first through holes, so that the elastic members are installed and positioned by being limited by the first through holes, and the extension direction and deformation direction of the elastic members are constrained and guided through the first through holes, so that the installation and arrangement of the elastic members can meet the design, thereby ensuring and improving the installation accuracy and measurement accuracy of the measurement assembly. Correspondingly, the conversion element is connected to the end of the elastic member located in the base, and the conversion element is installed in the base, so that the conversion element can be stably installed in position and state relative to the base. Based on this, the connection stability and reliability between the conversion element and the elastic member can be ensured and improved, so that the conversion element can persistently and reliably exert the measurement utility. Moreover, the base can also form a protection utility for the conversion element, thereby ensuring and prolonging the service life of the conversion element.

[0011] In some embodiments, the conversion element is provided with a second through hole; the measurement assembly includes a flexible member, the flexible member is arranged through the corresponding second through hole, and one end of the flexible member is connected to the abutting member; the aperture measuring device includes a first shaft and a first rotating member, one end of the first shaft is vertically arranged 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 abutting member is connected to the first shaft; and the first rotating member is used to drive the first shaft to rotate, so as to wind or unwind the flexible member.

[0012] By adopting the above scheme, when each measurement assembly with the base enters the to-be-measured hole, the first rotating member can drive the first shaft to rotate forward, so as to wind the flexible member of each measurement assembly through the first shaft. Based on this, the flexible member can pull the corresponding abutting member, so that the abutting member of each measurement assembly can move towards the side close to the corresponding elastic member at the same time, and actively "shrink", thereby facilitating the smooth entry of each measurement assembly into the to-be-measured hole with the base. Moreover, when each measurement assembly has entered the to-be-measured hole, the first rotating member can also drive the first shaft to rotate reversely, so as to unwind the flexible member of each measurement assembly through the first shaft, thereby eliminating the pulling force and resistance of the flexible member on the abutting member, so that the flexible member can basically avoid interfering with and hindering the measurement operation of each measurement assembly. Thus, the use 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 periphery of the first shaft.

[0014] By adopting the above scheme, the first shaft can be supported through the first bearing sleeved on the outer periphery of the first shaft, the friction coefficient during rotation of the first shaft is reduced, and the rotation accuracy of the first shaft is ensured. Therefore, the rotation stability and smoothness of the first shaft can be ensured and improved.

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

[0016] By adopting the above scheme, the first bearing can be limited and installed through the first limiting structure arranged on the base. Therefore, 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 exert the supporting effect on the first shaft. Moreover, since the first shaft is arranged in the first bearing, when the first bearing is limited and installed in the first limiting structure, the first shaft, especially the end portion of the first shaft close to the base, is also limited and positioned relative to the base. Therefore, the installation position of the first shaft relative to the base can be conveniently, effectively and reliably stabilized without affecting the rotation freedom of the first shaft, so that the first shaft can stably and reliably connect with the flexible members of the measuring assemblies, and the first shaft can stably rotate around the central axis.

[0017] In some embodiments, the aperture measuring device comprises a sliding seat, a housing assembly and a driving assembly. The base is connected to one end of the sliding seat. The housing assembly is provided with a sliding channel extending along the extension direction of the housing assembly. One end of the sliding channel is communicated to the outside. The sliding seat is slidably installed in the sliding channel. The driving assembly is installed in the housing assembly and is used to drive the sliding seat to reciprocally slide along the sliding channel.

[0018] By adopting the above scheme, when the base of the aperture measuring device is aligned and directed towards the to-be-measured hole, the driving assembly can drive the sliding seat to move along the sliding channel towards the side of the base. In this way, the sliding seat can drive the base to synchronously move towards the to-be-measured hole, so that the base and the measuring assemblies can quickly and smoothly enter the to-be-measured hole. Therefore, the use convenience and performance of the aperture measuring device can be improved.

[0019] By adopting the above scheme, the sliding base can be driven by the driving assembly to move along the slide channel when each measurement assembly has entered the hole to be measured, so that the base can be driven by the sliding base to move along the hole depth direction of the hole to be measured, thereby each measurement assembly can be driven to reach the cross section of the hole to be measured at any hole depth, and each measurement assembly can be stabilized at the cross section of the hole to be measured at any hole depth, and the hole diameter of the hole to be measured at the cross section can be accurately measured. Therefore, the measurement range of the hole diameter measuring device can cover the entire hole depth of the hole to be measured, and the hole diameter measuring device can be freely adjusted to any hole depth of the hole to be measured, and the hole diameter of the hole to be measured at any hole depth can be measured. Thus, the measurement range of the hole diameter measuring device can be expanded, the hole diameter measuring device can be fitted to the hole diameter of the hole to be measured at any hole depth, the measurement accuracy of the hole diameter measuring device for the hole diameter of the hole to be measured can be improved, and the use performance of the hole diameter measuring device can be improved. Moreover, since the moving range of the sliding base along the slide channel is large, the moving range of the base and each measurement assembly is also large, so that the hole diameter measuring device can measure the hole diameter of the hole to be measured with a larger hole depth, and the measurement range of the hole diameter measuring device can be expanded.

[0020] In some embodiments, the conversion element has a second through hole penetrating therethrough; the measurement assembly includes a flexible member, the flexible member is arranged through the corresponding second through hole, and one end of the flexible member is connected to the abutting member; the hole diameter measuring device includes a first shaft and a first rotating member, one end of the first shaft is vertically arranged 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 abutting 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 as to wind or unwind the flexible member; the hole diameter measuring device includes a sliding base, a housing assembly, and a driving assembly, one end of the base is connected to the sliding base, the housing assembly is provided with a slide channel, the slide channel is arranged along the extension direction of the housing assembly, one end of the slide channel is communicated to the outside, the sliding base is slidably installed in the slide channel, and the driving assembly is installed in the housing assembly and is used to drive the sliding base to reciprocatingly slide along the slide channel; the first rotating member and the end of the first shaft close to the first rotating member are exposed outside the housing assembly, and at least part of the first shaft can be axially telescoped.

[0021] By adopting the above scheme, when the base and each measurement assembly are located at the hole to be measured, the sliding seat can be driven by the driving assembly to move along the slide towards the side of the base, so that the base can be driven by the sliding seat to move towards the hole to be measured. During this period, the first shaft can be adapted to axially extend and retract with the movement of the base, so as to avoid the interference and obstruction of the movement of the sliding seat and the base caused by the first shaft. During this period, the first shaft can be driven by the first rotating piece to rotate in the forward direction, so that the flexible piece of each measurement assembly can be wound by the first shaft, so that the flexible piece can pull the corresponding abutting piece, so that the abutting piece of each measurement assembly can move towards the side of the corresponding elastic piece, and the abutting piece of each measurement assembly can be actively “contracted”. Thus, the base and each measurement assembly can quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the hole diameter measuring device.

[0022] By adopting the above scheme, when the base and each measurement assembly are located at the hole to be measured, the sliding seat can be driven by the driving assembly to move along the slide towards the side of the base, so that the base can be driven by the sliding seat to move towards the hole to be measured. During this period, the first shaft can be adapted to axially extend and retract with the movement of the base, so as to avoid the interference and obstruction of the movement of the sliding seat and the base caused by the first shaft. During this period, the first shaft can be driven by the first rotating piece to rotate in the forward direction, so that the flexible piece of each measurement assembly can be wound by the first shaft, so that the flexible piece can pull the corresponding abutting piece, so that the abutting piece of each measurement assembly can move towards the side of the corresponding elastic piece, and the abutting piece of each measurement assembly can be actively “contracted”. Thus, the base and each measurement assembly can quickly and smoothly enter the hole to be measured, thereby improving the convenience and performance of the hole diameter measuring device.

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

[0024] By adopting the above solution, the first shaft can be at least partially axially retractable by means of at least two coaxially arranged and sequentially sleeved first sleeve structures. Based on this, the first shaft can be ensured to adaptably and smoothly retract with the movement of the base while the sliding seat and base move synchronously along the slideway, thereby substantially preventing the first shaft from interfering with or obstructing the movement of the sliding seat and base, ensuring the performance and service life of the first shaft, and taking into account the "functions jointly achieved by the first rotating member, the first shaft, and the flexible member" as well as the "functions jointly achieved by the sliding seat, the housing assembly, and the drive assembly," thereby 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 at one end of the second shaft for driving the second shaft and the gear to rotate synchronously.

[0026] By adopting the above solution, the second rotating member can be driven to rotate, thereby driving the second shaft and the gear to rotate synchronously via 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 drive assembly can conveniently, quickly, and smoothly drive the sliding seat to reciprocate along the slideway with a simplified and reliable structure, thereby improving the structural reliability and performance of the drive assembly, and thus improving the structural reliability, ease of use, and performance of the aperture measuring device.

[0027] In some embodiments, the housing 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 mounted 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 the hole on one side of the mounting hole. It can also be installed on the other end of the second shaft through the stopper and the stopper is limited to the hole on the other side of the mounting hole. Based on this, the second rotating member and the stopper can be used to limit and position the relative ends of the second shaft to ensure that the second shaft can maintain a stable axial position relative to the mounting hole, while limiting 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, thereby stabilizing the stability and reliability of the meshing of the gear and the rack, ensuring and improving the performance and reliability of the drive assembly, and ensuring the driving effect of the drive assembly on the sliding seat.

[0029] In some embodiments, the shell assembly is provided with a reference platform near one end of the base, and the reference platform is provided with a reference surface near one side of the base, which is parallel to the cross section of the base where the measuring assemblies are located.

[0030] By using the above scheme, when the base is located in the hole to be measured, the reference surface of the reference platform is abutted and positioned on the end face provided with the hole to be measured, so that the shell assembly is stable in position and state relative to the hole to be measured, and the reference surface is 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 the measuring assemblies are located, the measuring assemblies located on the same cross section of the base can be on the same cross section of the hole to be measured during entering the hole to be measured, so that the measuring assemblies can easily reach any cross section of the hole to be measured and measure the aperture of the hole to be measured at the cross section. Thus, the use convenience and performance of the aperture measuring device can be effectively improved, and the measurement accuracy of the measuring assemblies for the aperture of the hole to be measured can be effectively guaranteed and improved.

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

[0032] By using the above scheme, the measuring assembly can support the abutting member through the telescopic member connected between the abutting member and the peripheral wall of the base, and hide and protect the elastic member in the telescopic member. Based on this, the effectiveness of the abutting member can be guaranteed, the service life of the elastic member can be guaranteed and prolonged, and the service life of the measuring assembly and the aperture measuring device can be guaranteed and prolonged. Moreover, since at least a part of the telescopic member is axially telescopic, the telescopic member can adaptively telescope with the movement of the abutting member during the movement of the abutting member under force towards the side close to or away from the elastic member, so that the elastic deformation of the elastic member and the movement of the abutting member caused by the telescopic member can be basically avoided, and the use performance of the measuring assembly can be guaranteed.

[0033] In some embodiments, the telescopic member comprises at least two second sleeved structures coaxially arranged and sequentially sleeved.

[0034] By using the above scheme, the telescopic member can be axially telescopic at least in part through the at least two second sleeved structures coaxially arranged and sequentially sleeved. Based on this, during the movement of the abutting member under force towards the side close to or away from the elastic member, the telescopic member can adaptively and smoothly telescope with the movement of the abutting member, so that the elastic deformation of the elastic member and the movement of the abutting member caused by the telescopic member can be basically avoided, the use performance and service life of the telescopic member can be guaranteed, and the use performance of the measuring assembly can be guaranteed.

[0035] In some embodiments, the abutting member comprises an abutting head and an abutting seat, the abutting seat is connected with the elastic member, and the abutting head is detachably connected to the abutting seat on the side away from the elastic member.

[0036] By adopting the above scheme, the abutting member can connect the elastic member through the abutting seat and support the abutting head. During the measurement assembly entering the hole to be measured, the abutting member can abut the hole wall of the hole to be measured through the abutting head detachably connected to the abutting seat, so as to facilitate the measurement assembly to measure the hole diameter of the hole to be measured. Thus, the use performance of the abutting member can be guaranteed. Moreover, since the abutting head and the abutting seat are detachably connected, the abutting head can be replaced as needed, so that the risk of affecting the data accuracy of the measurement assembly due to the serious wear of the abutting head can be effectively reduced, the measurement accuracy of the measurement assembly can be guaranteed, and the service life of the measurement assembly can be guaranteed and prolonged.

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

[0038] By adopting the above scheme, during the measurement assembly entering the hole to be measured, the abutting member can abut the hole wall of the hole to be measured through the abutting surface in the form of an arc surface and form a point contact or a line contact with the hole wall of the hole to be measured. Based on this, it can be guaranteed that the abutting member can be closely and tightly abutted to the hole wall of the hole to be measured through the abutting surface, and the risk of the abutting surface being abutted to the hole wall of the hole to be measured in vain can be reduced, so that the accuracy of the data measured by the measurement assembly can be guaranteed and improved, and the measurement accuracy of the measurement assembly can be guaranteed and improved. Moreover, based on the abutting surface in the form of an arc surface, the contact area between the abutting member and the hole wall of the hole to be measured can also be correspondingly reduced, so that the degree of wear of the abutting member can be reduced, and the service life of the abutting member and the measurement assembly can be guaranteed and prolonged.

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

[0040] By adopting the above scheme, the second limiting structure can be arranged on the base to facilitate limiting installation of the conversion elements by the second limiting structure. Based on this, the installation position and installation state of the conversion elements relative to the base can be conveniently, effectively and reliably stabilized, so that the conversion elements can stably, reliably and accurately convert the force value applied to them by the elastic member into the related electrical signal.

[0041] In some embodiments, the second limiting structure comprises two limiting members arranged oppositely, each limiting member is provided with a limiting groove on the side facing the other limiting member, the limiting groove is communicated to the outside at one end in the extending direction of the limiting groove, 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 used for inserting the conversion element thereinto through the two limiting members arranged oppositely, especially through the limiting grooves of the two limiting members, so as to limit the installation of the conversion element, and 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, so as to avoid restricting the middle part of the conversion element, and based on this, the middle part of the conversion element can be conveniently connected with the elastic member, and the conversion element can conveniently convert the force value applied by the elastic member to the middle part into a related electrical signal, so that the influence of the second limiting structure on the data converted by the conversion element can be effectively reduced, and the measurement accuracy of the conversion element and the measurement assembly can be guaranteed and improved.

[0043] In some embodiments, the measurement assemblies are arranged at equal angles around the central axis of the base.

[0044] By adopting the above scheme, the measurement assemblies can be arranged at equal angles around the central axis of the base on the basis that the measurement assemblies are located on the same cross section of the base, so as to effectively balance and optimize the layout of the measurement assemblies. Based on this, in the case that the measurement assemblies enter the to-be-measured hole together with the base, and the central axis of the base is substantially parallel to the central axis of the to-be-measured hole, the diameters of the to-be-measured hole in at least two radial directions of the to-be-measured hole arranged in a circular array on the same cross section can be accurately measured by the balanced distribution of the measurement assemblies, so that a more accurate diameter can be fitted by synthesizing the measurement data of the measurement assemblies, the measurement accuracy of the diameter measurement device for the diameter of the to-be-measured hole can be improved, and the diameter measurement device can be particularly suitable for measuring the diameter of the to-be-measured hole which is a circular hole.

[0045] In some embodiments, the measurement assembly is provided with three.

[0046] By adopting the above scheme, the measurement assemblies can be provided with three on the basis that the measurement assemblies are located on the same cross section of the base, so as to optimize the number of measurement assemblies. Based on this, in the case that the measurement assemblies enter the to-be-measured hole together with the base, and the central axis of the base is substantially parallel to the central axis of the to-be-measured hole, the diameters of the to-be-measured hole in three radial directions of the to-be-measured hole on the same cross section can be accurately measured by the three measurement assemblies, so that a more accurate diameter can be fitted by synthesizing the measurement data of the three measurement assemblies, errors can be reduced, and the measurement accuracy of the diameter measurement device for the diameter of the to-be-measured hole can be improved. Moreover, by providing the measurement assembly with three, the number of measurement assemblies can be correspondingly reduced on the basis of improving the measurement accuracy and reducing errors, so as to simplify the structure of the diameter measurement device and reduce the cost.

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

[0048] By adopting the above scheme, the conversion element adopts a strain gauge, so as to bear the force applied by the elastic member via the strain gauge, and sensitively and adaptively generate strain, and timely convert the strain into an associated electrical signal. Based on this, the sensitivity, response speed and measurement accuracy of the conversion element can be guaranteed and improved, so as to improve the measurement accuracy and speed of the aperture measurement device on the aperture of the to-be-measured hole.

[0049] In some embodiments, the aperture measurement device comprises a processor and an electrical connector, the electrical connector electrically connecting the conversion element to the processor, and the processor being configured to receive and process the conversion data of the conversion element.

[0050] By adopting the above scheme, based on the measured elastic force of the elastic member acting on each conversion element, the aperture measurement 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 measurement device itself can complete the measurement operation and data processing operation, without the aid of external analysis instruments, and can directly reflect the aperture of the to-be-measured hole, thereby effectively improving the use convenience and performance of the aperture measurement device.

[0051] In some embodiments, the aperture measurement device comprises a display, the display being electrically connected to the processor and configured to receive and display the processing data of the processor.

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

[0053] In some embodiments, the aperture measurement device comprises a battery, the battery being electrically connected to the processor and configured to supply power to the processor.

[0054] By adopting the above scheme, at least during the operation of the aperture measurement device, the battery can supply power to the processor and other components to guarantee the reliable operation of the processor and other components. Based on this, the workable time of the aperture measurement device can be guaranteed, and the use convenience, reliability and performance of the aperture measurement device can be improved.

[0055] In some embodiments, the aperture measurement device comprises a switch button, the switch button being electrically connected to the processor and configured to control the operation or braking of the processor.

[0056] By adopting the above solution, the processor can be controlled to start operation by using a switch button while the aperture measuring device is in operation; and the processor can be controlled to stop operation by using a switch button while the aperture measuring device is idle. Based on this, while ensuring the usability of the aperture measuring device, the energy consumption of the aperture measuring device during the idle period can be reduced accordingly, thereby extending the operating time of the aperture measuring device.

[0057] In some embodiments, 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.

[0058] By adopting this solution, when each measuring component enters the hole to be measured along with the base and stabilizes at a certain cross-section of the hole, ready for measurement, a measurement button can be used to control the conversion element to start measurement. At other non-measurement times, the measurement button can be used to control the conversion element to stop. This allows each measuring component to accurately measure the desired hole diameter and helps save energy during the aperture measurement device's idle time. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative labor.

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

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

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

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

[0064] Figure 5 A schematic diagram illustrating the connections of a conversion element, electrical connector, processor, display, and 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 6An exploded schematic view of the base and the measuring assembly is provided.

[0067] In the drawings, reference numbers are used to indicate the same or similar components.

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

[0069] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clear, the present application will be described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0070] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or at least two of the features. In the description of the present application, "at least two" means two or more, unless otherwise specifically limited.

[0072] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like, should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

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

[0074] In some scenarios, the hole diameter (i.e. the size of the hole in its radial direction) of the hole needs to be measured. For example, after the hole is processed, the hole diameter of the hole can be measured to check whether the hole diameter of the hole is qualified. For another example, before the part is matched with the hole, the hole diameter of the hole can be measured to select a part of appropriate specification so that the part can be matched with and reliably matched with the hole.

[0075] For this purpose, a measuring instrument such as an inside micrometer or a vernier caliper is usually used to measure the hole diameter of the hole. In some cases, the measuring instrument includes two measuring points, the two measuring points are arranged opposite to each other along the same radial direction of the measuring instrument, and the two measuring points can approach 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 to abut against the hole wall of the hole to be measured, the distance between the two measuring points can reflect the hole diameter of the hole to be measured. However, since the two measuring points approach or move away from each other at the same time in the radial direction, in actual measurement, it is difficult to accurately control the center line of the two measuring points to coincide with the central axis of the hole to be measured in the case of blind operation, and 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, and 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 hole diameter of the hole to be measured. The measurement accuracy of the hole diameter by the existing measuring instrument is poor.

[0076] Therefore, some embodiments of the present application provide a hole diameter measuring device, which can conveniently, quickly and accurately measure the hole diameter of a to-be-measured hole in at least two radial directions of the to-be-measured hole in a same cross section of the to-be-measured hole when each measuring assembly enters the to-be-measured hole along with the base, and the central axis of the base is substantially parallel to the central axis of the to-be-measured hole. During the measurement, each measuring assembly can be elastically supported by the elastic member against the abutting member, so that the abutting member can be adaptively abutted to the hole wall of the to-be-measured hole, thereby reducing the risk that the abutting member is not abutted to the hole wall of the to-be-measured hole, and reducing the risk that each measuring assembly measures at the same time but each abutting member does not abut the hole wall of the to-be-measured hole at the same time, thereby preliminarily ensuring the accuracy of the measurement data of each measuring assembly. On this basis, each measuring assembly can measure the elastic force of the elastic member acting on 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 that 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, thereby obtaining the hole diameter of the to-be-measured hole in the radial direction of the corresponding elastic member in the same cross section of the to-be-measured hole. Based on this, the hole diameter measuring device can conveniently, quickly and accurately measure the hole diameter of the to-be-measured hole, and even can fit a more accurate hole diameter by synthesizing the measurement data, thereby improving the measurement accuracy and efficiency of the hole diameter measuring device for the hole diameter of the to-be-measured hole.

[0077] The specific implementation of the present application is described in detail below in combination with specific embodiments:

[0078] Please refer to Figure 1 Some embodiments of the present application provide a hole diameter measuring device, which can be used to measure the hole diameter of a to-be-measured hole. The to-be-measured hole can be a through hole or a blind hole. The to-be-measured hole can be a circular hole or a non-circular hole (such as a rectangular hole, etc.). The hole diameter of the to-be-measured hole refers to the size of the to-be-measured hole in its radial direction. The radial direction of the to-be-measured hole refers to any direction that passes through the central axis of the to-be-measured hole and is perpendicular to the central axis, i.e., the radial direction of the to-be-measured hole is perpendicular to the central axis of the to-be-measured hole and is not intersected in different planes.

[0079] Based on this, when the to-be-measured hole is a circular hole, the radial direction of the to-be-measured hole refers to the diameter direction of the to-be-measured hole, and the hole diameter of the to-be-measured hole refers to the size of the to-be-measured hole in the diameter direction, i.e., the diameter of the to-be-measured hole. In this case, in any radial direction, the value of the hole diameter of the to-be-measured hole is substantially 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 hole diameter of the hole to be measured includes the size of the hole to be measured in any radial direction thereof. In this case, the values of the hole diameter of the hole to be measured in different radial directions can be different. For example, when the hole to be measured is a rectangular hole, in 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 a direction passing through the center of the rectangular cross section and perpendicular to the opposite sides of the rectangular cross section, or a direction passing through the center of the rectangular cross section and two opposite corners. In this case, the values of the hole diameter of the hole to be measured in different radial directions can be different. 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 hole diameter of the hole to be measured corresponds to the length or width of the rectangular cross section. For example, in the direction passing through the center of the rectangular cross section and two opposite corners, the hole diameter of the hole to be measured corresponds to the diagonal length of the rectangular cross section.

[0081] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 The hole diameter measuring device includes a base 10 and a plurality of measuring assemblies 20. The plurality of measuring assemblies 20 are arranged on the same cross section of the base 10. Each measuring assembly 20 includes an abutting 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 abutting 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 the part of the hole diameter measuring device for mounting the measuring assemblies 20. In an actual measurement scenario, the base 10 can enter the hole to be measured, and the plurality of measuring assemblies 20 mounted thereon also enter the hole to be measured.

[0083] The base 10 can have various structures. In some embodiments, the base 10 can include a base plate 12 and a circumferential wall 11 arranged on the base plate 12 in a ring shape, and the base plate 12 and the circumferential wall 11 together define an internal space of the base 10. The circumferential wall 11 can have various shapes, such as a polygonal ring shape, a circular ring shape, and the like.

[0084] It is also to be explained that the measuring assembly 20 is provided with at least two. Each measuring assembly 20 is spaced apart along the circumference of the base 10 and is located on the same cross section of the base 10. Here, the cross section of the base 10 refers to the section of the base 10 perpendicular to the central axis thereof. Based on this, by locating each measuring assembly 20 on the same cross section of the base 10, each measuring assembly 20 can be in the same plane when the base 10 enters the hole to be measured, so that in the case where the central axis of the base 10 is substantially parallel to the central axis of the hole to be measured, each measuring assembly 20 can be in the same cross section of the hole to be measured and measure the aperture of the hole to be measured at the cross section. Here, the cross section of the hole to be measured refers to the section of the hole to be measured perpendicular to the central axis thereof.

[0085] It is also to be explained that the measuring assembly 20 includes an abutting member 21, an elastic member 22 and a conversion element 23. Here, the abutting member 21 is a component for abutting to the hole wall of the hole to be measured when the measuring assembly 20 enters the hole to be measured. The structure, shape, material and the like of the abutting member 21 can be flexibly designed.

[0086] The elastic member 22 is a component having elastic properties. One end of the elastic member 22 is connected to the abutting 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 a pushing elastic force to the abutting member 21 and the conversion element 23 when the measuring assembly 20 enters the hole to be measured. Here, the connection between the elastic member 22 and the abutting member 21 can be achieved by, but not limited to, welding, bonding and the like. The connection between the elastic member 22 and the conversion element 23 can be achieved by, but not limited to, welding, bonding and the like. Here, 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 one end connected to the abutting member 21 to the other end connected to the conversion element 23. The elastic member 22 can be elastically deformed along its extension direction under force, i.e. the deformation direction of the elastic member 22 corresponds to (i.e. 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, i.e. the deformation direction of the elastic member 22 is parallel to the corresponding radial direction of the base 10. Here, the corresponding radial direction of the base 10 refers to the radial direction of the base 10 corresponding to the position where the elastic member 22 is provided.

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

[0089] Based on this, when each measuring assembly 20 is about to enter the hole to be measured along with the base 10, the abutting piece 21 of each measuring assembly 20 can be moved towards the side close to the corresponding elastic piece 22 (i.e. the elastic piece 22 connected to the abutting piece 21) under the pushing action of the hole mouth of the hole to be measured and the hole wall, or under the pulling action of other components of the hole diameter measuring device, and make the corresponding elastic piece 22 produce compression elastic deformation to accumulate elastic force, so that each measuring assembly 20 can smoothly enter the hole to be measured along with the base 10.

[0090] When each measuring assembly 20 has entered the hole to be measured, the abutting piece 21 of each measuring assembly 20 can be adaptively abutted to the hole wall of the hole to be measured under the pushing action of the elastic force of the corresponding elastic piece 22, so as to reduce the risk that the abutting piece 21 does not abut to the hole wall of the hole to be measured. At the same time, when the abutting piece 21 of each measuring assembly 20 is adaptively abutted to the hole wall of the hole to be measured, the elastic force (i.e. strain force) of the elastic piece 22 will also act on the corresponding conversion element 23 (i.e. the conversion element 23 connected to the elastic piece 22) in the opposite direction, so that the corresponding conversion element 23 can measure the elastic force of the elastic piece 22 and convert the elastic force into a related electrical signal.

[0091] Based on this, according to the 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 piece 22, and x is the deformation amount of the elastic piece 22 compared with the original length), the electrical signal converted and output by each conversion element 23 can be received by the processor 110 (such as shown in Figure 5 The deformation amount of the corresponding elastic piece 22 is the deformation amount of the corresponding elastic piece 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, and the processor 110 can be a component belonging to the hole diameter measuring device, or an external component independent of the hole diameter measuring device, or even an internal component of an external analysis instrument.

[0092] On this basis, combined with the arrangement that each measurement assembly 20 is located on the same cross section of the base 10, in the case that the central axis of the base 10 is substantially parallel to the central axis of the hole to be measured, the hole diameter of the hole to be measured on the corresponding radial direction of each elastic member 22 on the same cross section can be reflected according to the deformation amount of each elastic member 22 on the corresponding radial direction of the base 10. Thus, the hole diameter of the hole to be measured can be conveniently, quickly and accurately measured, and the measurement accuracy and efficiency of the hole diameter measuring device for the hole diameter of the hole to be measured can be improved. Especially, in the case that the hole to be measured is a circular hole, since the hole diameter of the circular hole on any radial direction is substantially the same, the measurement data of each measurement assembly 20 can be further integrated to jointly fit a more accurate hole diameter of the circular hole, so that the measurement accuracy of the hole diameter measuring device for the hole diameter of the circular hole can be further improved.

[0093] In summary, the hole diameter measuring device provided by the embodiments of the present application can conveniently, quickly and accurately measure the hole diameters on at least two radial directions of the hole to be measured on the same cross section through each measurement assembly 20 located on the same cross section of the base 10, in the case that each measurement assembly 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. During this process, each measurement assembly 20 can elastically abut against the abutting member 21 through the elastic member 22, so that the abutting member 21 can be self-adaptively abutted 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, reducing the risk that each measurement assembly 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, and thereby preliminarily ensuring the accuracy of the measurement data of each measurement assembly 20. On this basis, each measurement assembly 20 can measure the elastic force of the elastic member 22 acting on the conversion element 23 through the conversion element 23, and can convert the elastic force into a related electrical signal to be output to the processor 110. Based on this, according to the calculation formula of the elastic force and combined with the arrangement 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 on the corresponding radial direction of the base 10, so as to obtain the hole diameter of the hole to be measured on the corresponding radial direction of each elastic member 22 on the same cross section. Based on this, the hole diameter measuring device can conveniently, quickly and accurately measure the hole diameter of the hole to be measured, and even can integrate the measurement data to fit a more accurate hole diameter, thereby improving the measurement accuracy and efficiency of the hole diameter measuring device for the hole diameter of the hole to be measured.

[0094] Please refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 In some embodiments of the present application, the peripheral wall 11 of the base 10 penetrates the first through hole 111. The first through hole 111 is arranged one-to-one with the elastic member 22, and the elastic member 22 is arranged through the corresponding first through hole 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 a wall structure in the form of a ring formed along the circumference of the base 10. The peripheral wall 11 of the base 10 is provided with a first through hole 111. The first through hole 111 is provided with at least two, and each first through hole 111 is arranged in a staggered manner on the peripheral wall 11. Each first through hole 111 penetrates the peripheral wall 11 along the hole depth direction to communicate the internal space and the external space of the base 10.

[0096] The number of first through holes 111 corresponds to the number of elastic members 22. Each first through hole 111 is arranged one-to-one corresponding to each elastic member 22. The elastic member 22 is arranged in the corresponding first through hole 111. Based on this, the elastic member 22 can be installed in a limiting and positioning manner 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 arrangement of the elastic member 22 can meet the design.

[0097] In the case where the elastic member 22 is arranged in the corresponding first through hole 111, the end of the elastic member 22 outside the base 10 is connected to the abutting 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 stably installed in position and state relative to the base 10, so as to guarantee and improve the connection stability and reliability between the conversion element 23 and the elastic member 22, and facilitate the conversion element 23 to persistently and reliably exert the measuring effect. On this basis, the base 10 can also form a protection effect on the conversion element 23, so as to guarantee and prolong the service life of the conversion element 23.

[0098] By adopting the above scheme, the first through hole 111 can be arranged on the peripheral wall 11 of the base 10, and the elastic member 22 can be arranged in the corresponding first through hole 111, so that the elastic member 22 can be installed in a limiting and positioning manner 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 arrangement of the elastic member 22 can meet the design, thereby guaranteeing and improving the installation precision and measuring precision of the measuring assembly 20. Correspondingly, the conversion element 23 can be connected to the end of the elastic member 22 inside the base 10, and the conversion element 23 can be installed in the base 10, so that the conversion element 23 can be stably installed in position and state relative to the base 10. Based on this, the connection stability and reliability between the conversion element 23 and the elastic member 22 can be guaranteed and improved, so as to facilitate the conversion element 23 to persistently and reliably exert the measuring effect. Moreover, the base 10 can also form a protection effect on the conversion element 23, so as to guarantee and prolong the service life of the conversion element 23.

[0099] Of course, in other embodiments, the conversion element 23 can be installed on the peripheral wall 11 of the base 10, and the elastic member 22 and the abutting member 21 can be arranged outside the base 10.

[0100] Please refer to Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 In some embodiments of the present application, the conversion element 23 has a second through hole 231. The measurement assembly 20 includes a flexible member 24. The flexible member 24 is arranged through the second through hole 231, and one end of the flexible member 24 is connected to the abutting member 21. The hole diameter measuring device includes a first shaft 30 and a first rotating member 40. One end of the first shaft 30 is arranged on the base 10, and 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 abutting member 21 is connected to the first shaft 30. The first rotating member 40 is used to drive the first shaft 30 to rotate, so as to wind or unwind the flexible member 24.

[0101] It should be noted that the flexible member 24 is a component for forming a pulling force on the abutting member 21. The flexible member 24 has flexibility and can be wound or unwound. The flexible member 24 can be, but is not limited to, a flexible pull rope, a flexible sheet, and the like. Correspondingly, the conversion element 23 is provided with the 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 second through hole 231 is arranged at a position corresponding to the arrangement position of the flexible member 24. The second through hole 231 can be arranged through which the flexible member 24 is arranged.

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

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

[0104] The connection between the flexible member 24 and the abutting member 21 can be achieved by welding, bonding, or the like.

[0105] It is also necessary to point out that the first shaft 30 is a component for winding or unwinding the flexible member 24. The first shaft 30 is rotatably erected on the base 10. One end of the first shaft 30 is connected with the base 10, so as to effectively stabilize the mounting 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 the central axis thereof.

[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 for driving 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 means of, but not limited to, sleeving, clamping and the like, and the first rotating member 40 and the first shaft 30 remain synchronous rotation. The first rotating member 40 can be, but is not limited to, a knob, a handle and the like. The first rotating member 40 can be manually driven or electrically driven.

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

[0108] Based on this, when each measuring assembly 20 with the base 10 desires to enter the to-be-measured hole, the first rotating member 40 can be rotated in a forward direction, so as to drive the first shaft 30 to synchronously rotate via the first rotating member 40, so that the rotating first shaft 30 can wind the flexible member 24 of each measuring assembly 20. Thus, the flexible member 24 can pull the corresponding abutting member 21, so that the abutting member 21 of each measuring assembly 20 can simultaneously move towards the side close to the corresponding elastic member 22, that is, the "shrinking" action is realized, so that each measuring assembly 20 can smoothly enter the to-be-measured hole with the base 10. During this period, the "shrunk" abutting member 21 can cause the corresponding elastic member 22 to produce a compression elastic deformation to accumulate elastic force.

[0109] When each measuring assembly 20 has entered the to-be-measured hole, the first rotating member 40 can be rotated in a reverse direction, so as to drive the first shaft 30 to synchronously rotate via the first rotating member 40, so that the rotating first shaft 30 can unwind the flexible member 24 of each measuring assembly 20, and the pulling force and resistance of the flexible member 24 on the abutting member 21 are removed. On this basis, the abutting member 21 of each measuring assembly 20 can be respectively self-adaptively abutted to the hole wall of the to-be-measured hole under the action of the elastic force of the corresponding elastic member 22. At the same time, the elastic force of the elastic member 22 also acts on 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] The "forward rotation" and "reverse rotation" are relative concepts, which can be determined according to the actual scene. When the first rotating member 40 is rotated in the forward direction, the abutting member 21 can be moved towards the side close to the corresponding elastic member 22.

[0111] By adopting the above scheme, when each measurement assembly 20 is about to enter the to-be-measured hole with the base 10, the first rotating piece 40 can drive the first shaft 30 to rotate forward, so as to wind the flexible piece 24 of each measurement assembly 20 through the first shaft 30. Based on this, the flexible piece 24 can pull the corresponding abutting piece 21, so that the abutting piece 21 of each measurement assembly 20 can be moved towards the side close to the corresponding elastic piece 22 at the same time, and actively “shrinks”, thereby facilitating the base 10 to smoothly enter the to-be-measured hole with each measurement assembly 20. Moreover, when each measurement assembly 20 has entered the to-be-measured hole, the first rotating piece 40 can also drive the first shaft 30 to rotate reversely, so as to unwind the flexible piece 24 of each measurement assembly 20 through the first shaft 30, and remove the pulling force and resistance of the flexible piece 24 on the abutting piece 21, thereby basically avoiding the interference and obstruction of the flexible piece 24 to the measurement operation of each measurement assembly 20. In this way, the use convenience and use performance of the hole diameter measuring device can be effectively improved.

[0112] Of course, in other embodiments, the hole diameter measuring device can omit the flexible piece 24, the first shaft 30 and the first rotating piece 40. When each measurement assembly 20 is about to enter the to-be-measured hole with the base 10, the hole opening of the to-be-measured hole and the abutting piece 21 can be pushed by the hole wall, so as to passively “shrink” each abutting piece 21.

[0113] Please refer to Figure 3 , Figure 4 , Figure 6 In some embodiments of the present application, the hole diameter measuring device comprises a first bearing 50, which 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, and 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 in the rotation process of the first shaft 30, and guarantee 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 scheme, the first bearing 50 sleeved on the outer periphery of the first shaft 30 can be used to support the first shaft 30, reduce the friction coefficient in the rotation process of the first shaft 30, and guarantee the rotation accuracy of the first shaft 30. Based on this, the rotation stability and rotation smoothness of the first shaft 30 can be guaranteed and improved.

[0116] Please refer to Figure 3 , Figure 6 In some embodiments of the present application, the hole diameter measuring device comprises a second bearing 60, which is sleeved on the outer periphery of the first shaft 30, and the second bearing 60 is arranged in a spaced manner with the first bearing 50.

[0117] It should be noted that the second bearing 60 is sleeved around the outer circumference of the first shaft 30 and spaced apart from the first bearing 50. Alternatively, the second bearing 60 is sleeved around the outer circumference of the end of the first shaft 30 distal from the base 10. The second bearing 60 can cooperate with the first bearing 50 to support the first shaft 30, reducing the friction coefficient during rotation of the first shaft 30 and ensuring the rotational 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 cooperates with the first bearing 50 to jointly support the first shaft 30, stabilize the central axis of 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. 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 the 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 installed in the first limiting structure 13. Since the first shaft 30 is provided in the first bearing 50, when the first bearing 50 is 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 is arranged on the base 10, so that the first bearing 50 is installed in a limited manner through the first limiting structure 13. Therefore, 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 support the first shaft 30. In addition, since the first shaft 30 penetrates through the first bearing 50, when the first bearing 50 is installed in the first limiting structure 13, 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 rotation freedom of the first shaft 30, so that the first shaft 30 can stably and reliably connect with the flexible member 24 of each measuring assembly 20, and the first shaft 30 can stably rotate around the axis thereof, and the flexible member 24 can be wound or unwound.

[0122] Please refer to Figure 1 、 Figure 3 、 Figure 6 In some embodiments of the present application, the aperture measurement device comprises 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 sliding channel 81. The sliding channel 81 extends along the extension direction of the housing assembly 80, and one end of the sliding channel 81 is communicated to the outside. The sliding seat 70 is slidably installed in the sliding channel 81. The driving assembly 90 is installed in the housing assembly 80 and is used to drive the sliding seat 70 to reciprocally slide along the sliding channel 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 is formed separately from the base 10 and is connected separately from the base 10. In this way, the components (such as the conversion element 23, the first bearing 50, the first shaft 30, etc.) “arranged in the enclosed space of the sliding seat 70 and the base 10” can be conveniently assembled. In addition, 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 keep synchronous movement (including synchronous movement and synchronous rotation). The sliding seat 70 and the base 10 can be connected by welding, bonding or other methods.

[0124] It should be further noted that the housing assembly 80 is a housing component of the aperture measurement device. The housing assembly 80 is provided with a sliding channel 81. The sliding channel 81 extends along the extension direction of the housing assembly 80. One end of the sliding channel 81 is communicated 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 enter the slide 81 through the passage opening of the slide 81 in communication with the outside, so that the sliding seat 70 can be slidably installed in the slide 81. Based on this, the slide 81 can guide the moving direction of the sliding seat 70, and can constrain the moving path and moving stroke of the sliding seat 70.

[0126] The shape of the portion of the sliding seat 70 slidably installed in the slide 81 can be the same as the shape of the slide 81, so as to facilitate the smooth sliding of the sliding seat 70 in the slide 81. In some embodiments, the shape of the portion of the sliding seat 70 slidably installed in the slide 81, and the shape of the slide 81, can be the same polygon, for example, a hexagon. In this way, the smooth sliding of the sliding seat 70 along the slide 81 can be guaranteed, and the rotation of the sliding seat 70 relative to the slide 81 can be limited, so that the movement of the sliding seat 70 in the slide 81 can be constrained and guided, and the smoothness and stability of the movement of the sliding seat 70 in the slide 81 can be improved.

[0127] It should be further noted that the driving assembly 90 is a component for driving the sliding seat 70 to slide along the slide 81. The driving assembly 90 is installed in the housing assembly 80 to be supported and stabilized by the housing assembly 80. The structure of the driving assembly 90 can be variously designed. The driving assembly 90 can provide driving force to the sliding seat 70 to drive the sliding seat 70 to reciprocally slide along the slide 81, so that the sliding seat 70 can drive the base 10 to synchronously reciprocally move along the path constrained by the slide 81.

[0128] By adopting the above scheme, in the case that the base 10 of the aperture measurement device is aligned to face the to-be-measured hole, the sliding seat 70 can be driven by the driving assembly 90 to move along the slide 81 to the side of the base 10, so that the sliding seat 70 can drive the base 10 to synchronously move in the direction close to the to-be-measured hole, thereby the base 10 and each measurement assembly 20 can quickly and smoothly enter the to-be-measured hole, and the convenience and performance of the aperture measurement device can be improved.

[0129] By adopting the above scheme, the base 10 can be driven to move along the hole depth direction of the hole to be measured by the sliding seat 70, so that each measurement assembly 20 can be driven to reach the cross section of the hole to be measured at any hole depth, and each measurement assembly 20 can be stabilized at the cross section of the hole to be measured at any hole depth, and the hole diameter of the hole to be measured at the cross section can be accurately measured. Thus, the measurement range of the hole diameter measuring device can cover the entire hole depth of the hole to be measured, the hole diameter measuring device can be freely adjusted to any hole depth of the hole to be measured, and the hole diameter of the hole to be measured at any hole depth can be measured. Thus, the measurement range of the hole diameter measuring device can be expanded, the hole diameter measuring device can be fitted to the hole diameter of the hole to be measured at any hole depth, the measurement accuracy of the hole diameter measuring device for the hole diameter of the hole to be measured can be improved, and the use performance of the hole diameter measuring device can be improved. Moreover, since the moving range of the sliding seat 70 along the slide 81 is large, the moving range of the base 10 and each measurement assembly 20 is also large, so that the hole diameter measuring device can measure the hole diameter of the hole to be measured with a larger hole depth, and the measurement range of the hole diameter measuring device can be expanded.

[0130] Please refer to Figure 1 、 Figure 3 、 Figure 6 In some embodiments of the present application, the hole diameter measuring device comprises 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 slide 81. The slide 81 extends along the extension direction of the housing assembly 80, and one end of the slide 81 is communicated to the outside. The sliding seat 70 is slidably installed in the slide 81. The driving assembly 90 is installed in the housing assembly 80 and is used to drive the sliding seat 70 to reciprocally slide along the slide 81. The conversion element 23 is provided with a second through hole 231. The measurement assembly 20 comprises a flexible member 24. The flexible member 24 is arranged through the corresponding second through hole 231, and one end of the flexible member 24 is connected to the abutting member 21. The end of the flexible member 24 away from the abutting member 21 is connected to the circumferential side of the first shaft 30. One end of the first shaft 30 is vertically arranged in 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 exposed outside the housing assembly 80. At least part of the first shaft 30 can be axially telescopic. The first rotating member 40 is used to drive the first shaft 30 to rotate, so as to wind or unwind the flexible member 24.

[0131] It should be noted that the present embodiment at least combines the above embodiment, and the “conversion element 23 has a second through hole 231, the measurement assembly 20 includes a flexible element 24, the flexible element 24 is arranged through the corresponding second through hole 231, one end of the flexible element 24 is connected to the abutting element 21, the aperture measuring device includes a first shaft 30 and a first rotating element 40, one end of the first shaft 30 is vertically arranged on the base 10, the other end of the first shaft 30 is connected to the first rotating element 40, the end of the flexible element 24 away from the abutting element 21 is connected to the side of the first shaft 30, and the first rotating element 40 is used to drive the first shaft 30 to rotate, so that the first shaft 30 winds or unwinds the flexible element 24” embodiment. Some related descriptions can refer to the description of the corresponding embodiment, which will not be repeated here.

[0132] In the present embodiment, the end of the first shaft 30 close to the first rotating element 40 can pass through the shell assembly 80, so that the end of the first shaft 30 close to the first rotating element 40 and the first rotating element 40 mounted thereon are exposed outside the shell assembly 80, so that the first rotating element 40 can be conveniently driven to rotate and perform corresponding actions.

[0133] In the present embodiment, at least part of the first shaft 30 can be axially telescopic, that is, at least part of the first shaft 30 can be elongated or shortened in its axial direction. Wherein, 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 synchronous movement of the sliding seat 70 and the base 10 along the slide 81, the first shaft 30 can be adapted to be telescopic with the movement of the base 10, so that the interference between the first shaft 30 and the “synchronous movement of the sliding seat 70 and the base 10 along the slide 81” can be reduced, the use performance and service life of the first shaft 30 can be guaranteed, the functions of “the first rotating element 40, the first shaft 30, and the flexible element 24” and “the sliding seat 70, the shell assembly 80, and the driving assembly 90” can be guaranteed, and the use performance of the aperture measuring device can be guaranteed and improved.

[0134] By adopting the above scheme, when the base 10 and each measurement assembly 20 are located at the hole to be measured, the sliding seat 70 can be driven by the driving assembly 90 to move along the slide 81 towards the side of the base 10, so that the base 10 can be driven by the sliding seat 70 to move towards the hole to be measured. During the movement, the first shaft 30 can be adapted to axially extend or retract according to the movement of the base 10, so that the movement of the sliding seat 70 and the base 10 can be basically avoided from being interfered or hindered by the first shaft 30. During the movement, the first shaft 30 can be driven by the first rotating member 40 to positively rotate, so that the flexible member 24 of each measurement assembly 20 can be wound by the first shaft 30, and the flexible member 24 can pull the corresponding abutting member 21, so that the abutting member 21 of each measurement assembly 20 can be driven to move towards the side of the corresponding elastic member 22, and each measurement assembly 20 can be actively “contracted”. Therefore, the base 10 and each measurement assembly 20 can quickly and smoothly enter the hole to be measured, so that the use convenience and use performance of the hole diameter measuring device can be improved.

[0135] By adopting the above scheme, when the base 10 and each measurement assembly 20 are located at the hole to be measured, the sliding seat 70 can be driven by the driving assembly 90 to move along the slide 81 towards the side of the base 10, so that the base 10 can be driven by the sliding seat 70 to move towards the hole to be measured. During the movement, the first shaft 30 can be adapted to axially extend or retract according to the movement of the base 10, so that the movement of the sliding seat 70 and the base 10 can be basically avoided from being interfered or hindered by the first shaft 30. During the movement, the first shaft 30 can be driven by the first rotating member 40 to positively rotate, so that the flexible member 24 of each measurement assembly 20 can be wound by the first shaft 30, and the flexible member 24 can pull the corresponding abutting member 21, so that the abutting member 21 of each measurement assembly 20 can be driven to move towards the side of the corresponding elastic member 22, and each measurement assembly 20 can be actively “contracted”. Therefore, the base 10 and each measurement assembly 20 can quickly and smoothly enter the hole to be measured, so that the use convenience and use performance of the hole diameter measuring device can be improved.

[0136] Please refer to Figure 3 、 Figure 6 In some embodiments of the present application, the first shaft 30 comprises at least two first sleeve structures 31 coaxially arranged and sequentially sleeved.

[0137] It should be noted that the first shaft 30 comprises at least two first sleeve structures 31 coaxially arranged and sequentially sleeved, so that at least part of the first shaft 30 is axially telescopic. In any two adjacent first sleeve structures 31, the first sleeve structure 31 with larger cross-sectional size can be a sleeve structure or can be provided with a hole structure, so as to facilitate the sleeving of the first sleeve structure 31 with smaller cross-sectional size into the first sleeve structure 31 with larger cross-sectional size, so that the first sleeve structure 31 with smaller cross-sectional size can be relatively telescopic relative to the first sleeve structure 31 with larger cross-sectional size. Wherein, the "cross section" refers to the cross section of the corresponding structure perpendicular to the axis thereof.

[0138] In some embodiments, in each first sleeve structure 31, the first sleeve structure 31 with the smallest cross-sectional size can be a rod structure. In this way, the structural strength and rigidity of the first shaft 30 as a whole can be enhanced without affecting the telescoping of the first sleeve structure 31, so as to guarantee the performance and utility of the first shaft 30. Of course, in other embodiments, in each first sleeve structure 31, the first sleeve structure 31 with the smallest cross-sectional size can be a sleeve structure or other forms of structures.

[0139] By adopting the above scheme, the first shaft 30 can be telescopic at least in part by at least two first sleeve structures 31 coaxially arranged and sequentially sleeved. Based on this, during the synchronous movement of the sliding seat 70 and the base 10 along the slide 81, the first shaft 30 can be telescopic adaptively and smoothly with the movement of the base 10, so that the movement of the first shaft 30 can be basically avoided to interfere with or hinder the movement of the sliding seat 70 and the base 10, the use performance and service life of the first shaft 30 can be guaranteed, the functions of the "first rotating member 40, the first shaft 30 and the flexible member 24" and the functions of the "sliding seat 70, the shell assembly 80 and the driving assembly 90" can be guaranteed, and the use performance of the aperture measuring device can be guaranteed and improved.

[0140] Of course, in other embodiments, the first shaft 30 can be realized to be telescopic at least in part by other structural forms, for example, at least in part to be elastically telescopic, etc.

[0141] Please refer to Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, the sliding seat 70 is provided with a rack 71 on the circumferential side, and the extension direction of the rack 71 is parallel to the extension direction of the slide 81. The driving assembly 90 comprises a second shaft 91, a second rotating member 92 and a gear 93. The second shaft 91 is installed on the shell assembly 80. The gear 93 is installed on the second shaft 91 and engaged with the rack 71. The second rotating member 92 is installed on one end of the second shaft 91 and used to drive the second shaft 91 and the gear 93 to synchronously rotate.

[0142] It should be noted that the rack 71 is mounted on the circumferential side of the sliding seat 70, and the rack 71 and the sliding seat 70 can be connected by welding, bonding, bolt locking, or the like. The extension direction of the rack 71 corresponds to (i.e., is parallel to) the extension direction of the slide 81. Under the driving action of the driving assembly 90, the rack 71 and the sliding seat 70 can move synchronously along the slide 81.

[0143] It should also be noted that the driving 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 stably positioned relative to the housing assembly 80. The second shaft 91 has a degree of freedom of rotation about its central axis.

[0144] The second rotating member 92 is mounted on one end of the second shaft 91 and is a component for driving the second shaft 91 to rotate about the central axis of the second shaft 91. The second rotating member 92 and the second shaft 91 can be connected by sleeving, clamping, or the like, and the second rotating member 92 and the second shaft 91 rotate synchronously. The second rotating member 92 can be a knob, a handle, or the like. The second rotating member 92 can be manually driven or electrically driven.

[0145] The gear 93 is mounted on the second shaft 91 and rotates synchronously with the second shaft 91, i.e., the second rotating member 92 can drive the second shaft 91 and the gear 93 to rotate synchronously. The gear 93 is in meshing connection with the rack 71, so that when the gear 93 rotates, it can drive the rack 71 to move along the slide 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 using the above scheme, the second rotating member 92 can be driven to rotate, thereby driving the second shaft 91 and the gear 93 to rotate synchronously via the second rotating member 92, so that the rack 71 and the sliding seat 70 can be reliably and smoothly driven to reciprocate along the slide 81 via the direct or indirect meshing relationship between the gear 93 and the rack 71. Thus, the driving assembly 90 can conveniently, quickly, and smoothly drive the sliding seat 70 to reciprocate along the slide 81 with a simplified and reliable structure, thereby improving the structural reliability and use performance of the driving assembly 90 and the aperture measuring device.

[0147] Of course, in other possible embodiments, the driving assembly 90 can have other structural forms to drive the sliding seat 70 to reciprocate along the slide 81, for example, the driving assembly 90 can be designed as a pneumatic cylinder or the like.

[0148] Please refer to 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 stop-limited at one side opening of the mounting hole 82. The driving assembly 90 comprises a stop member 94. The stop member 94 is mounted at one end of the second shaft 91 away from the second rotating member 92, and is stop-limited at the other side opening of the mounting hole 82.

[0149] It is to be noted that the housing assembly 80 is provided with the mounting hole 82, which penetrates the housing assembly 80 along the extension direction of the mounting hole 82, and is used for mounting the second shaft 91. The second shaft 91 is penetratedly mounted 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 of rotation around the central axis of the second shaft 91 in the mounting hole 82. The mounting hole 82 has a mounting opening 821 connected to the slide 81, and the mounting opening 821 is used for mounting 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 can comprise a first housing 84 and a second housing 85 connected to each other in a split manner. The first housing 84 is provided with a first slot 822 near one side of the second housing 85, and the first slot 822 is provided in a penetrating manner along the extension direction thereof. The second housing 85 is provided with a second slot 823 near one side of the first housing 84, and the second slot 823 is provided in a penetrating manner along the extension direction thereof. The second slot 823 and the first slot 822 can be mutually aligned when the first housing 84 and the second housing 85 are connected in a split manner, and jointly enclose the mounting hole 82. Based on this, the second shaft 91 and the gear 93 can be assembled into the first slot 822 before the first housing 84 and the second housing 85 are connected in a split manner, and the mounting hole 82 can be jointly enclosed by the second slot 823 and the first slot 822 after the first housing 84 and the second housing 85 are connected in a split manner, so as to realize the limited mounting of the second shaft 91. In this way, the assembly convenience and efficiency between the housing assembly 80 and the driving assembly 90 can be improved.

[0151] It is to be further noted that the end of the second shaft 91 for mounting the second rotating member 92 penetrates the corresponding opening of the mounting hole 82. The second rotating member 92 is mounted at the end of the second shaft 91. In this case, the second rotating member 92 can be stop-limited at the side opening of the mounting hole 82, so as to limit the movement of the second shaft 91 along the mounting hole 82 away from the second rotating member 92.

[0152] Correspondingly, the end of the second shaft 91 distal to the second rotating member 92 also passes through the corresponding aperture of the mounting hole 82. A stopper 94 is mounted on the end of the second shaft 91, which is a component for limiting and positioning the end of the second shaft 91. In this case, the stopper 94 can stop limiting the side aperture of the mounting hole 82 to limit the movement of the second shaft 91 along the mounting hole 82 towards the side close to the second rotating member 92.

[0153] Based on this, the “second rotating member 92 stops limiting the side aperture of the mounting hole 82” and “stopper 94 stops limiting the other side aperture of the mounting hole 82” can be combined to limit and position the two ends of the second shaft 91, so as to ensure that the second shaft 91 can be stably positioned axially relative to the mounting hole 82, thereby stably positioning the gear 93, and ensuring the stability and reliability of the meshing of the gear 93 and the rack 71.

[0154] By adopting the above scheme, the housing assembly 80 can pass the second shaft 91 through the mounting hole 82 to preliminarily stabilize the mounting position of the second shaft 91 and the driving assembly 90 relative to the housing assembly 80. On this basis, the driving assembly 90 can be mounted on one end of the second shaft 91 through the second rotating member 92 and stop limiting the side aperture of the mounting hole 82, and can be mounted on the other end of the second shaft 91 through the stopper 94 and stop limiting the other side aperture of the mounting hole 82. Based on this, the two ends of the second shaft 91 can be limited and positioned by the second rotating member 92 and the stopper 94 together, so as to ensure that the second shaft 91 can be stably positioned axially relative to the mounting hole 82, thereby stably positioning the gear 93 mounted on the second shaft 91, ensuring the stability and reliability of the meshing of the gear 93 and the rack 71, and ensuring and improving the use performance and reliability of the driving assembly 90, and ensuring the driving effect of the driving assembly 90 on the sliding seat 70.

[0155] Please refer to Figure 1 , Figure 3 , Figure 6 In some embodiments of the present application, the end of the housing assembly 80 close to the base 10 is provided with a reference platform 83, and the side close to the base 10 of the reference platform 83 has a reference surface 831 parallel to the cross section of the base 10 where each measuring assembly 20 is located.

[0156] It should be noted that during the sliding of the sliding seat 70 along the slide 81, the end of the housing assembly 80 provided with the passage aperture of the slide 81 is closer to the base 10 relative to the other end of the housing assembly 80. Therefore, the end of the housing assembly 80 provided with the passage aperture of the slide 81 is the end of the housing assembly 80 close to the base 10.

[0157] The housing assembly 80 is provided with a reference platform 83 near one end of the base 10. The reference platform 83 can be a ring structure provided on the corresponding end of the housing assembly 80, or can be other forms of structures. The reference platform 83 can serve as a positioning reference of the housing assembly 80, and is used for positioning abutting and stopping to one side of the hole of the to-be-measured hole. In particular, the reference platform 83 has a reference surface 831 near one side of the base 10, and the reference surface 831 is a flat surface. The surface of the base 10 can serve as a more accurate and higher-precision positioning reference, and is used for abutting to the end surface provided with the hole of the to-be-measured hole.

[0158] The reference surface 831 can be perpendicular to the central axis of the base 10, parallel to the cross section of the base 10, and parallel to the cross section of the base 10 where each measurement assembly 20 is located. Based on this, when the reference surface 831 abuts to the end surface provided with the hole of the to-be-measured hole, the reference surface 831 is substantially parallel to the cross section of the to-be-measured hole, so that each measurement assembly 20 located on the same cross section of the base 10 can be on the same cross section of the to-be-measured hole during entering the to-be-measured hole.

[0159] By using the above scheme, when the base 10 is located in the to-be-measured hole, by abutting and positioning the reference surface 831 of the reference platform 83 to the end surface provided with the hole of the to-be-measured hole, the position and state of the housing assembly 80 relative to the to-be-measured hole can be stabilized, and the reference surface 831 can be parallel to the cross section of the to-be-measured hole. Since the reference surface 831 is parallel to the cross section of the base 10 where each measurement assembly 20 is located, each measurement assembly 20 located on the same cross section of the base 10 can be on the same cross section of the to-be-measured hole during entering the to-be-measured hole, so that each measurement assembly 20 can reach any cross section of the to-be-measured hole and measure the aperture of the to-be-measured hole at the cross section. Therefore, the use convenience and performance of the aperture measuring device can be effectively improved, and the measurement accuracy of each measurement assembly 20 to the aperture of the to-be-measured hole can be effectively guaranteed and improved.

[0160] Please refer to Figure 3 、 Figure 4 、 Figure 7 In some embodiments of the present application, the measurement assembly 20 comprises a telescopic member 25, one end of the telescopic member 25 is connected to the abutting member 21, the other end of the telescopic member 25 is connected to the peripheral wall 11 of the base 10, and at least part of the telescopic member 25 can be axially telescopic.

[0161] It should be noted that one end of the telescopic member 25 is connected to the abutting member 21 near one end of 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 arranged inside the telescopic member 25, and the telescopic member 25 is also a component for hiding and protecting the elastic member 22.

[0162] To reduce the risk of the elastic deformation of the elastic member 22 and the movement of the abutting member 21 being interfered by the telescopic member 25, at least a part of the telescopic member 25 can be axially telescopic, i.e., at least a part of the telescopic member 25 can be elongated or shortened in its axial direction. Based on this, during the movement of the abutting member 21 under force, the telescopic member 25 can be adaptively telescopic with the movement of the abutting member 21.

[0163] By adopting the above scheme, the measurement assembly 20 can support the abutting member 21 through the telescopic member 25 connected between the abutting member 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 which, the utility of the abutting member 21 can be facilitated to be guaranteed, the service life of the elastic member 22 can be facilitated to be guaranteed and prolonged, and the service life of each measurement assembly 20 and the aperture measuring device can be facilitated to be guaranteed and prolonged. Moreover, since at least a part of the telescopic member 25 can be axially telescopic, during the movement of the abutting member 21 under force towards the side close to or away from the elastic member 22, the telescopic member 25 can be adaptively telescopic with the movement of the abutting member 21, so that the elastic deformation of the elastic member 22 and the movement of the abutting member 21 can be substantially avoided from being interfered by the telescopic member 25, and the use performance of the measurement assembly 20 can be guaranteed.

[0164] Of course, in other embodiments, the measurement assembly 20 can omit the telescopic member 25.

[0165] Please refer to Figure 3 , Figure 4 , Figure 7 In some embodiments of the present application, the telescopic member 25 comprises at least two second sleeve structures 251 coaxially arranged and sequentially sleeved.

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

[0167] Wherein, in each second sleeve structure 251, the second sleeve structure 251 with the smallest cross-sectional size can be but is not limited to a sleeve structure, a rod-shaped structure or other morphological structure.

[0168] By adopting the above scheme, the telescopic part 25 can axially expand and contract at least partially through the at least two second sleeved structures 251 coaxially arranged and sequentially sleeved. Based on this, during the movement of the abutting part 21 forced to move towards or away from the side of the elastic part 22, it can be ensured that the telescopic part 25 can expand and contract adaptively and smoothly along with the movement of the abutting part 21, so that it can basically avoid the interference and obstruction of the elastic deformation of the elastic part 22 and the movement of the abutting part 21 caused by the telescopic part 25, and can ensure the use performance and service life of the telescopic part 25, and can ensure the use performance of the measuring assembly 20.

[0169] Of course, in other embodiments, the telescopic part 25 can adopt other structural forms to achieve at least partial axial expansion and contraction, for example, it can have at least partial telescopic elasticity, etc.

[0170] Please refer to Figure 3 、 Figure 4 、 Figure 7 In some embodiments of the present application, the abutting part 21 comprises an abutting head 211 and an abutting seat 212, the abutting seat 212 is connected with the elastic part 22, and the abutting head 211 is detachably connected to the side of the abutting seat 212 away from the elastic part 22.

[0171] It should be noted that the abutting seat 212 is connected to the end of the elastic part 22 away from the conversion element 23. The abutting seat 212 is a component for supporting and fixing the abutting head 211. The abutting head 211 is detachably connected to the side of the abutting seat 212 away from the elastic part 22. The abutting head 211 is a component for abutting to the hole wall of the to-be-measured hole. Among them, the abutting head 211 can be detachably connected with the abutting seat 212 in a threaded connection manner, etc. Among them, the shape and size of the abutting seat 212 can be designed flexibly; the shape and size of the abutting head 211 can be designed flexibly.

[0172] By adopting the above scheme, the abutting part 21 can connect the elastic part 22 through the abutting seat 212, and support the abutting head 211. The abutting part 21 can also abut to the hole wall of the to-be-measured hole through the abutting head 211 detachably connected to the abutting seat 212 during the measurement assembly 20 enters the to-be-measured hole, so as to facilitate the measurement assembly 20 to measure the hole diameter of the to-be-measured hole. Thus, the use performance of the abutting part 21 can be ensured. And since the abutting head 211 and the abutting seat 212 are detachably connected, the abutting head 211 can be replaced as needed, so that the risk of affecting the data accuracy of the measurement assembly 20 due to the serious wear of the abutting head 211 can be effectively reduced, the measurement accuracy of the measurement assembly 20 can be ensured, and the service life of the measurement assembly 20 can be ensured and prolonged.

[0173] Of course, in other embodiments, the abutting part 21 can adopt other structural forms, for example, it can be an integral component.

[0174] Please refer toFigure 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, which 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 for abutting the hole wall of the hole to be measured. The abutting surface 2111 is an arc surface.

[0176] By adopting the above scheme, during the measurement assembly 20 enters the hole to be measured, the abutting member 21 can abut the hole wall of the hole to be measured through the abutting surface 2111 which is an arc surface, and form a point contact or a line contact with the hole wall of the hole to be measured. Based on this, it can be ensured that the abutting member 21 can be closely and tightly abutted to the hole wall of the hole to be measured through the abutting surface 2111, and the risk of virtual abutment of the abutting surface 2111 and the hole wall of the hole to be measured is reduced, thereby the accuracy of the data measured by the measurement assembly 20 can be ensured and improved, and the measurement accuracy of the measurement assembly 20 can be ensured and improved. Moreover, based on the abutting surface 2111 which is an arc surface, the contact area between the abutting member 21 and the hole wall of the hole to be measured can be correspondingly reduced, thereby the degree of wear of the abutting member 21 can be reduced, and the service life of the abutting member 21 and the measurement assembly 20 can be ensured and prolonged.

[0177] Please refer to Figure 4 、 Figure 6 、 Figure 7 In some embodiments of the present application, the base 10 comprises a second limiting structure 14, which is arranged one-to-one 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 the second limiting structure 14. The number of the second limiting structure 14 is equal to the number of the conversion element 23. The arrangement position of the second limiting structure 14 corresponds to the arrangement position of the conversion element 23. The second limiting structure 14 is used for limiting the installation of the conversion element 23 one-to-one. The structure of the second limiting structure 14 can be diversified, for example, the second limiting structure 14 can be a hole structure, or a groove structure, etc. In the case that the conversion element 23 is limitedly installed in the second limiting structure 14, the cooperation between the conversion element 23 and the second limiting structure 14 can be clearance fit, transition fit or interference fit.

[0179] By adopting the above scheme, the second limiting structure 14 is arranged on the base 10, so as to limit and install the conversion element 23 through the second limiting structure 14. Therefore, the installation position and 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 conveniently, stably, reliably and accurately convert the force value of the elastic element 22 applied thereto into an electric signal.

[0180] Please refer to Figure 4 、 Figure 6 、 Figure 7 In some embodiments of the present application, the second limiting structure 14 comprises two limiting pieces 141 oppositely arranged, and each limiting piece 141 is provided with a limiting groove 1411 on the side facing the other limiting piece 141, and the limiting groove 1411 is communicated to the outside at one end in the extending direction, and the conversion element 23 is inserted into the limiting grooves 1411 of the two limiting pieces 141.

[0181] It should be noted that the second limiting structure 14 comprises two limiting pieces 141. The two limiting pieces 141 are oppositely arranged and are used for limiting and installing one conversion element 23. Each limiting piece 141 is provided with a limiting groove 1411 on the side facing the other limiting piece 141. The limiting grooves 1411 of the two limiting pieces 141 are both communicated to the outside at the same end in the extending direction. Therefore, the conversion element 23 can be inserted into the two limiting grooves 1411 from the end communicated 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 pieces 141.

[0182] In this case, one side of the conversion element 23 can be limited and installed in the limiting groove 1411 of one limiting piece 141, and the other side of the conversion element 23 can be limited and installed in the limiting groove 1411 of the other limiting piece 141. Moreover, the middle part of the conversion element 23 can be exposed and arranged in the space between the two limiting pieces 141, so as 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 inserted with the conversion element 23 through the two limiting pieces 141 arranged oppositely, especially through the limiting grooves 1411 of the two limiting pieces 141, so as to limit the installation of the conversion element 23, and based on this, the installation position and 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 pieces 141, so as to avoid restricting the middle part of the conversion element 23, and based on this, the middle part of the conversion element 23 can be conveniently connected with the elastic element 22, and the conversion element 23 can conveniently convert the force value applied by the elastic element 22 to the middle part into a related electrical signal, so that the influence of the second limiting structure 14 on the data converted by the conversion element 23 can be effectively reduced, and the measurement accuracy of the conversion element 23 and the measurement assembly 20 can be guaranteed and improved.

[0184] Please refer to Figure 1 、 Figure 2 In some embodiments of the present application, the measurement assemblies 20 are arranged at equal angles and peripherally around the central axis of the base 10.

[0185] It should be noted that the measurement assemblies 20 are arranged at equal angles and peripherally around the central axis of the base 10, that is, the measurement assemblies 20 are arranged in a peripheral array around the central axis of the base 10. For example, when two measurement assemblies 20 are provided, the two measurement assemblies 20 are arranged at equal angles and peripherally around the central axis of the base 10, so that the two measurement assemblies 20 are relatively distributed on opposite sides of the central axis of the base 10, and the included angle between the two measurement assemblies 20 is 180°. For another example, when three measurement assemblies 20 are provided, the three measurement assemblies 20 are arranged at equal angles and peripherally around the central axis of the base 10, so that the included angle between each two adjacent measurement assemblies 20 is 60°.

[0186] By adopting the above scheme, on the basis that the measurement assemblies 20 are located on the same cross section of the base 10, the measurement assemblies 20 are arranged at equal angles and peripherally around the central axis of the base 10, so as to effectively balance and optimize the layout of the measurement assemblies 20. Based on this, in the case that the base 10 enters the to-be-measured hole with the measurement assemblies 20, and the central axis of the base 10 is substantially parallel to the central axis of the to-be-measured hole, the hole diameters of the to-be-measured hole on at least two radial directions which are peripherally distributed on the same cross section can be accurately measured by the balanced distribution of the measurement assemblies 20, so that a more accurate hole diameter can be fitted by combining the measurement data of the measurement assemblies 20, the measurement accuracy of the hole diameter measuring device for the hole diameter of the to-be-measured hole can be improved, and the hole diameter measuring device can be especially suitable for measuring the hole diameter of the to-be-measured hole which is a circular hole.

[0187] Please refer to Figure 1 、 Figure 2In some embodiments of the present application, the measurement assembly 20 is provided with three.

[0188] By adopting the above scheme, the number of measurement assemblies 20 can be optimized by providing the measurement assembly 20 with three, on the basis that each measurement assembly 20 is located on the same cross section of the base 10. Based on this, in the case that each measurement assembly 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, the hole diameter of the hole to be measured at three radial directions of the same cross section can be accurately measured by the three measurement assemblies 20, so that the measurement data of the three measurement assemblies 20 can be combined to fit a more accurate hole diameter, which can reduce errors and improve the measurement accuracy of the hole diameter measuring device for the hole diameter of the hole to be measured. Moreover, by providing the measurement assembly 20 with three, the number of measurement assemblies 20 can be correspondingly reduced to simplify the structure of the hole diameter measuring device and reduce costs, on the basis of improving the measurement accuracy and reducing errors.

[0189] Of course, in other embodiments, the measurement assembly 20 can be provided with two, four, five, etc.

[0190] Please refer to Figure 3 , Figure 4 In some embodiments of the present application, the conversion element 23 comprises a strain gauge.

[0191] It should be noted that the strain gauge is an element for measuring strain. In the case that the elastic member 22 is connected to the strain gauge, the strain gauge can withstand the force exerted by the elastic member 22 and adaptively generate strain, and convert the strain into a related electrical signal (such as resistance value).

[0192] By adopting the above scheme, the conversion element 23 adopts a strain gauge to facilitate the strain gauge to withstand the force exerted by the elastic member 22 and sensitively and responsively convert the strain into a related electrical signal. Based on this, the sensitivity, response speed and measurement accuracy of the conversion element 23 can be guaranteed and improved, so that the measurement accuracy and speed of the hole diameter measuring device for the hole diameter of the hole to be measured can be improved.

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

[0194] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the hole diameter measuring device comprises a processor 110 and an electrical connection 100, the electrical connection 100 electrically connects the conversion element 23 to the processor 110, and the processor 110 is used to receive and process the conversion data of the conversion element 23.

[0195] It should be noted that each conversion element 23 can correspond to connecting 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 can be, but is not limited to, a cable, a flexible circuit board, and the like. 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 arranged in the housing assembly 80 to hide and protect the processor 110 and the electrical connector 100 via the housing assembly 80. In some embodiments, the housing assembly 80 can include a third housing 86 which can be connected separately from other parts of the housing assembly 80 to facilitate the assembly of components such as the processor 110 in the third housing 86.

[0197] By using the above scheme, on the basis of the elastic force of the elastic member 22 acting on each conversion element 23 measured by each conversion element 23, 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 itself can complete the measurement operation and data processing operation, without the aid of external analysis instruments, and directly reflect the aperture of the measured hole, thereby effectively improving the use convenience and use performance of the aperture measuring device.

[0198] Of course, in other embodiments, the processor 110 can be an external component independent of the aperture measuring device. Even, the processor 110 can be a component of an external analysis instrument, in which case the aperture measuring device can be externally connected to the external analysis instrument to receive and process the conversion data of the conversion element 23 by the external analysis instrument.

[0199] Please refer to Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a display 120 which is electrically connected to the processor 110 for receiving and displaying the processed data of the processor 110.

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

[0201] In some embodiments, the display 120 is mounted to the housing assembly 80, and a screen of the display 120 is exposed outside the housing assembly 80. In this way, the mounting position and state of the display 120 can be stabilized, a stable electrical connection relationship between the display 120 and the processor 110 can be established, and the display 120 can display relevant content via the exposed screen.

[0202] By using the above scheme, 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 and display the received data to the screen via the display 120 electrically connected to the processor 110. Based on this, the aperture measuring device itself can complete the measurement operation, data processing operation, and data display operation, and an operator can intuitively read the aperture of the to-be-measured hole, thereby effectively improving the use convenience and performance of the aperture measuring device.

[0203] Of course, in other embodiments, the aperture measuring device can omit the display 120 and be directly connected to an external analysis instrument to receive, process, and display relevant data by the external analysis instrument.

[0204] Please refer to Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measuring device includes a battery 130 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 electric energy. The battery 130 is at least electrically connected to the processor 110 for supplying power to the processor 110. In some embodiments, the aperture measuring device includes the display 120, and the battery 130 can also be electrically connected to the display 120 for supplying power to the display 120.

[0206] In some embodiments, the battery 130 can be detachably mounted to the housing assembly 80. In this way, the battery 130 can be easily disassembled for replacement or charging. In other embodiments, the battery 130 is a rechargeable battery 130, the battery 130 is packaged in the housing assembly 80, and a charging interface of the battery 130 is exposed outside the housing assembly 80 to facilitate the external power supply to dock with the charging interface and charge the battery 130.

[0207] By using the above scheme, at least during the operation of the aperture measuring device, the battery 130 can supply power to the processor 110 and other components to ensure the reliable operation of the processor 110 and other components. Based on this, the workable duration of the aperture measuring device can be ensured, and the use convenience, reliability, and performance of the aperture measuring device can be improved.

[0208] Of course, in other embodiments, the aperture measurement device can omit the battery 130, and instead be directly connected to an external power source for powering the components of the aperture measurement device, such as the processor 110.

[0209] Referring to Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measurement device comprises a switch button 140, which is electrically connected to the processor 110, and is configured to control the processor 110 to work or brake.

[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 (i.e., start working) or brake (i.e., stop working).

[0211] In some embodiments, the switch button 140 is mounted on the shell assembly 80, and at least a part of the switch button 140 is exposed outside the shell assembly 80. In this way, the installation position and state of the switch button 140 can be stabilized, the switch button 140 and the processor 110 can be electrically connected stably, and the exposed part of the switch button 140 can be pressed by an operator.

[0212] By using the above scheme, the processor 110 can be controlled to start working by the switch button 140 during the operation of the aperture measurement device, and the processor 110 can be controlled to stop working by the switch button 140 during the standby of the aperture measurement device. Therefore, the energy consumption of the aperture measurement device during standby can be saved, and the working time of the aperture measurement device can be prolonged.

[0213] Of course, in other embodiments, the aperture measurement device can omit the switch button 140, and the processor 110 can be powered or powered off to control the processor 110 to work or brake.

[0214] Referring to Figure 3 , Figure 5 , Figure 6 In some embodiments of the present application, the aperture measurement device comprises a measurement button 150, which is electrically connected to the conversion element 23, and is configured to control the conversion element 23 to work or brake.

[0215] It should be noted that the measurement button 150 is electrically connected to the conversion element 23, and the measurement button 150 is a component for controlling the conversion element 23 to work (i.e., start working) or brake (i.e., 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, facilitate establishing a stable electrical connection relationship between the measuring button 150 and the conversion element 23, and facilitate the measuring button 150 for the operator to press through the exposed portion.

[0217] By adopting the above solution, when each measuring assembly 20 enters the hole to be measured along with the base 10 and stabilizes at a certain cross-section of the hole to be measured, and when the measurement operation is ready, the measurement button 150 can be used to control the conversion element 23 to start the measurement operation; at other non-measurement times, the measurement button 150 can be used to control the conversion element 23 to stop operation. Based on this, each measuring assembly 20 can accurately measure the required aperture of the hole to be measured, and it can also help save 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 remain in the working state.

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

[0220] The aperture measuring device includes a housing assembly 80. The housing assembly 80 comprises a first housing 84, a second housing 85, and a third housing 86, which are sequentially connected in a separate manner. A ring-shaped reference platform 83 is provided on the end of the first housing 84 facing away from the second housing 85. The side of the reference platform 83 facing away from the second housing 85 forms a reference surface 831. The housing assembly 80 is provided with a slideway 81, which extends from the reference surface 831 into the third housing 86 along the extension direction of the housing assembly 80. The end of the slideway 81 near the reference surface 831 is connected to the exterior of the housing assembly 80. A first groove 822 is provided on the side of the first housing 84 near the second housing 85. The first groove 822 extends through the first housing 84 along its extension direction. A second groove 823 is provided on the side of the second housing 85 near the first housing 84. The second groove 823 extends through the second housing 85 along its extension direction. When the first and second housings 84, 85 are separately connected, the second groove 823 and the first groove 822 can align with each other and together enclose a mounting hole 82. The mounting hole 82 has a mounting opening 821 connected to the slideway 81 . A third through hole 861 is formed 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 comprises a driving assembly 90. The driving assembly 90 comprises a second shaft 91, a gear 93, a second rotating member 92 and a stopper 94. The second shaft 91 is installed in the mounting hole 82. The gear 93 is installed on the second shaft 91 and is located in the mounting hole 821. The second rotating member 92 is installed 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 located in the side hole of the mounting hole 82. The stopper 94 is installed on the other end of the second shaft 91 and is located in the other side hole of the mounting hole 82.

[0222] The aperture measuring device comprises a sliding seat 70 and a base 10. The base 10 is installed on one end of the sliding seat 70, and the base 10 and the sliding seat 70 can form a rod together. The sliding seat 70 is slidingly installed in the slide 81. The sliding seat 70 is provided with a rack 71 on one side facing the gear 93. The rack 71 extends along the extension direction of the sliding seat 70 and is connected with the gear 93. The other end of the sliding seat 70 away from the base 10 is provided with a fourth through hole 72. 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 comprises three measuring assemblies 20. The three measuring assemblies 20 are located on the same cross section of the base 10, and the cross section is parallel to the reference surface 831. The three measuring assemblies 20 are arranged at equal angles around the central axis of the base 10. Each measuring assembly 20 comprises an abutting member 21, an elastic member 22, a conversion element 23, a flexible member 24 and an extension member 25. The base 10 is provided with a first through hole 111 corresponding to each elastic member 22. The first through hole 111 connects the inside and outside of the base 10.

[0224] In each measuring assembly 20: the abutting member 21 comprises an abutting head 211 and an abutting seat 212, the abutting head 211 is detachably connected to the abutting seat 212. The side of the abutting head 211 away from the abutting seat 212 is provided with an abutting surface 2111, the abutting surface 2111 is arc-shaped. The side of the abutting seat 212 away from the abutting 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. The end of the elastic member 22 away from the abutting seat 212 is connected to the conversion element 23. The conversion element 23 is installed in the base 10. The conversion element 23 is provided with 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 abutting 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 abutting member 21, and the other end of the telescopic member 25 is connected to the circumferential wall 11 of the base 10. The telescopic member 25 comprises two second sleeve structures 251 coaxially arranged and sequentially sleeved, and the two second sleeve structures 251 are in sleeve shape. Based on the two second sleeve structures 251, the telescopic member 25 can adaptively axially expand and contract with the movement of the abutting 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 comprises two limiting members 141 arranged oppositely, and each limiting member 141 is provided with a limiting groove 1411 on the side facing the other limiting member 141, and the end of the limiting groove 1411 close to the sliding seat 70 is communicated 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 of the corresponding second limiting structure 14.

[0226] The aperture measuring device comprises a first shaft 30 and a first rotating member 40. One end of the first shaft 30 is vertically arranged on the base 10. The other end of the first shaft 30 is arranged outside the shell assembly 80 through the third through hole 861 and the fourth through hole 72, and is connected to the first rotating member 40. The first rotating member 40 and the first shaft 30 keep synchronous rotation. The end of each flexible member 24 away from the abutting member 21 is connected to the circumferential side of the first shaft 30. The first shaft 30 comprises three first sleeve structures 31 coaxially arranged and sequentially sleeved, the first sleeve structure 31 closest to the base 10 is in rod shape, and the remaining two first sleeve structures 31 are in sleeve shape. Based on the three first sleeve structures 31, the first shaft 30 can adaptively axially expand and contract with the movement of the base 10.

[0227] The aperture measuring device comprises 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 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 shell 86.

[0228] The aperture measurement device includes an electrical connector 100, a processor 110, a display 120, a battery 130, a switch button 140, and a measurement button 150. The processor 110 is mounted within the third housing 86. Each electrical connector 100 electrically connects each conversion element 23 to the processor 110. The processor 110 is configured to receive and process conversion data from the conversion element 23. The display 120 is mounted within the third housing 86, with its screen exposed outside the third housing 86. The display 120 is electrically connected to the processor 110 and is configured to receive and display data processed by the processor 110. The battery 130 is mounted within the third housing 86. The battery 130 is electrically connected to the processor 110 and the display 120 and is configured to power the processor 110 and the display 120. The switch button 140 is mounted within the third housing 86, with at least a portion of the switch button 140 exposed outside the third housing 86. The switch button 140 is electrically connected to the processor 110 and can be used to control the operation or braking of the processor 110. The measurement button 150 is mounted on the third housing 86, with at least a portion of the measurement button 150 exposed outside the third housing 86. The measurement button 150 is electrically connected to the conversion element 23 and 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 positioned relative to the hole to be measured, the second rotating member 92 can drive the second shaft 91 and the gear 93 to rotate synchronously. This, through the meshing relationship between the gear 93 and the rack 71, drives the sliding seat 70 and the base 10 to move synchronously along the slideway 81 toward the hole to be measured. During this process, the first rotating member 40 can also drive the first shaft 30 to rotate, thereby retracting the flexible member 24 of each measuring component 20 via the first shaft 30. This allows the flexible member 24 to pull the corresponding abutment member 21, prompting the abutment member 21 of each measuring component 20 to simultaneously move toward the corresponding elastic member 22, thereby actively "contracting." This facilitates the base 10 and each measuring component 20 to quickly and smoothly enter the hole to be measured, thereby improving the ease of use and performance of the aperture measuring device.

[0230] When each measuring assembly 20 initially enters the hole to be measured, the reference surface 831 of the reference platform 83 can be positioned snugly against the end surface of the hole to be measured, thereby ensuring that the position and state of the housing assembly 80 relative to the hole to be measured are fixed and stabilized, and the reference surface 831 is parallel to the cross-section of the hole to be measured. This ensures that each measuring assembly 20 located on the same cross-section of the base 10 remains on the same cross-section of the hole to be measured while entering the hole to be measured.

[0231] In the case that each measurement assembly 20 initially enters the hole to be measured, the first rotating member 40 can drive the first shaft 30 to rotate, so as to release the pulling force and resistance of the flexible member 24 on the abutting member 21 through the first shaft 30, thereby avoiding the interference and obstruction of the flexible member 24 to the measurement operation of each measurement assembly 20.

[0232] In the case that the reference surface 831 is positioned to abut against the end surface provided with the hole to be measured, and the flexible member 24 releases the pulling force and resistance on the abutting member 21, the driving assembly 90 can drive the sliding seat 70 to move along the slide 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 measurement assembly 20 to reach the cross section of the hole to be measured at any hole depth, and enabling each measurement assembly 20 to be stabilized at the cross section of the hole to be measured at any hole depth. Thus, the measurement range of the hole diameter measuring device can cover the entire hole depth of the hole to be measured, and each measurement assembly 20 can be freely adjusted to any hole depth of the hole to be measured, and the hole diameter at any hole depth of the hole to be measured can be measured. Thus, the measurement range of the hole diameter measuring device can be expanded, the hole diameter of the hole to be measured at any hole depth can be fitted, the measurement accuracy of the hole diameter measuring device for the hole diameter of the hole to be measured can be improved, and the use performance of the hole diameter measuring device can be improved. Moreover, since the moving range of the sliding seat 70 along the slide 81 is large, the moving range of the base 10 and each measurement assembly 20 is also large, thereby enabling the hole diameter measuring device to measure the hole diameter of the hole to be measured with a larger hole depth, and expanding the measurement range of the hole diameter measuring device.

[0233] In the case that each measuring assembly 20 is stable at the cross section of the hole to be measured at any hole depth, each measuring assembly 20 can be elastically abutted against the abutting member 21 by the elastic member 22, so that the abutting member 21 can be adaptively abutted to the hole wall of the hole to be measured, thereby reducing the risk that the abutting member 21 is not abutted to the hole wall of the hole to be measured, reducing the risk that each measuring assembly 20 measures at the same time but each abutting member 21 does not abut to 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 assembly 20. At the same time, each measuring assembly 20 can measure the elastic force of the elastic member 22 acting on the conversion element 23 through the conversion element 23, and can be converted into an electric signal. On this basis, the hole diameter measuring device can transmit the electric signal output by the conversion element 23 to the processor 110 through the electrical connecting element 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 processing of the processor 110, 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. Again, 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, thereby reflecting the hole diameter of the hole to be measured in the radial direction of the corresponding elastic member 22 at the same cross section. Thus, the hole diameter measuring device can conveniently, quickly and accurately measure the hole diameter of the hole to be measured, and even can fit a more accurate hole diameter by comprehensive measurement data, thereby improving the measurement accuracy and efficiency of the hole diameter measuring device for the hole diameter of the hole to be measured.

[0234] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aperture measuring device, characterized by, The application relates to a hole diameter measuring device. The hole diameter measuring device comprises a base, at least two measuring assemblies, an abutting member, an elastic member and a conversion element, a first shaft and a first rotating member. The conversion element is provided with a second through hole. The measuring assembly comprises a flexible member which is arranged in the second through hole. The hole diameter measuring device comprises 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 sliding channel which extends along the extension direction of the shell assembly.

2. The aperture measuring device of claim 1, wherein, The sliding channel is in communication with the outside.

3. The aperture measuring device of claim 1 or 2, wherein, The sliding seat is slidably arranged in the sliding channel.

4. The apparatus of claim 3, wherein The driving assembly is arranged in the shell assembly and is used for driving the sliding seat to reciprocally slide along the sliding channel.

5. The apparatus of claim 1 or 2, wherein The first rotating member and the end of the first shaft close to the first rotating member are exposed outside the shell assembly.

6. The apparatus of claim 1 or 2, wherein The first shaft can be axially extended and contracted. The base is provided with a first through hole which is in one-to-one correspondence with the elastic member.

7. The aperture measuring device of claim 6, wherein, The elastic member is arranged in the first through hole. The conversion element is arranged in the base. The hole diameter measuring device comprises a first bearing which is sleeved on the outer periphery of the first shaft.

8. The apparatus of claim 1 or 2, wherein The base comprises a first limiting structure which is used for limiting the arrangement of the first bearing. The first shaft comprises at least two first sleeved structures which are coaxially arranged and are sequentially sleeved. The sliding seat is provided with a rack on the circumferential side. The driving assembly comprises a second shaft, a second rotating member and a gear. The second shaft is arranged in the shell assembly. The gear is arranged in the second shaft and is in engagement with the rack. The second rotating member is arranged in one end of the second shaft and is used for driving the second shaft and the gear to synchronously rotate. The shell assembly is provided with a mounting hole. The second shaft is rotatably arranged in the mounting hole. The second rotating member is stop-limited on one side of the mounting hole. The driving assembly comprises a stopper which is arranged in one end of the second shaft away from the second rotating member and is stop-limited on the other side of the mounting hole. The shell assembly is provided with a reference table close to one end of the base. The reference table is provided with a reference surface close to one side of the base. The reference surface is parallel to the cross section of the base where the measuring assemblies are arranged.

9. The aperture measuring device of claim 1, 2, or 4, wherein, The measuring assembly comprises a telescopic member, one end of which is connected to the abutting member, and the other end of which is connected to the circumferential wall of the base, and at least a part of the telescopic member is axially telescopic.

10. The apparatus of claim 9, wherein the aperture is a circular aperture. The telescopic member comprises at least two second sleeved structures coaxially arranged and sequentially sleeved.

11. The aperture measuring device of claims 1, 2, 4, or 9, wherein, 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 the side of the abutting seat away from the elastic member.

12. The aperture measuring device of claims 1, 2, 4, or 9, wherein, The side of the abutting member away from the elastic member is provided with an abutting surface, which is an arc surface.

13. The aperture measuring device of claims 1, 2, 4, or 9, wherein, The base comprises a second limiting structure, which is arranged one-to-one corresponding to the conversion element, and is used for limiting installation corresponding to the conversion element.

14. The apparatus of claim 13, wherein, The second limiting structure comprises two limiting members oppositely arranged, the limiting member is provided with a limiting groove on the side facing the other limiting member, and the limiting groove is communicated to the outside at one end in the extending direction of the limiting groove, and the conversion element is inserted into the limiting grooves of the two limiting members.

15. The aperture measuring device of claims 1, 2, 4, 9, or 14, wherein, Each of the measuring assemblies is arranged at an equal angle around the central axis of the base.

16. The aperture measuring device of claims 1, 2, 4, 9, or 14, wherein, The measuring assembly is provided with three.

17. The aperture measuring apparatus of claims 1, 2, 4, 9, or 14, wherein, The conversion element comprises a strain gauge.

18. The aperture measuring apparatus of claims 1, 2, 4, 9, or 14, wherein, The aperture measuring device comprises a processor and an electrical connecting member, the electrical connecting member electrically connects the conversion element to the processor, and the processor is used for receiving and processing the conversion data of the conversion element.

19. The apparatus of claim 18, wherein The aperture measuring device comprises a display, which is electrically connected to the processor, and is used for receiving and displaying the processing data of the processor. And / or, the aperture measuring device comprises a battery, which is electrically connected to the processor, and is used for powering the processor. And / or, the aperture measuring device comprises a switch button, which is electrically connected to the processor, and is used for controlling the processor to work or brake. And / or, the aperture measuring device comprises a measuring button, which is electrically connected to the conversion element, and is used for controlling the conversion element to work or brake.

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