Caliper auxiliary tool

Abstract

The invention discloses a caliper auxiliary tool, the caliper auxiliary tool is used for being installed on a vernier caliper, the vernier caliper comprises a main scale and a vernier scale, the main scale extends along a first direction and is provided with a first measuring claw, and the vernier scale is provided with a second measuring claw. The caliper auxiliary tool comprises a first connecting piece, a second connecting piece, a first pressure sensor and a second pressure sensor. The first connecting piece is used for being connected to the main ruler. The second connecting piece is used for being connected to the vernier scale, and the first pressure sensor is connected with the first connecting piece and arranged to be capable of being adjusted to the position flush with the first measuring claw. And the second pressure sensor is connected with the second connecting piece and is arranged to be capable of being adjusted to a position flush with the second measuring claw.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, in particular to a caliper auxiliary tool. Background Art

[0002] Vernier calipers are commonly used length measuring instruments in industrial production, life and scientific research. They can accurately measure the length, inner diameter, outer diameter and depth of workpieces.

[0003] However, the design principle of the vernier caliper makes it only suitable for measuring relatively hard objects, and is not suitable for measuring flexible objects. In research fields such as life sciences and medicine, most of the objects that need to be measured are flexible, such as tumors, ears, skin, etc. At present, the vernier caliper still occupies an absolute dominant position in the field of measuring such flexible objects because of its advantages of being cheap, light and fast.

[0004] When measuring an object with a vernier caliper, a person needs to push the cursor with force and read the value after it touches the object being measured. However, people cannot ensure that the same amount of force is always used to push the cursor, nor can they keenly detect the slight deformation of the object being measured with the naked eye. This results in that when using a vernier caliper to measure a flexible object, the greater the force used to push the cursor, the smaller the reading obtained. On the contrary, the smaller the force used to push the cursor, the larger the reading obtained. Different measurers will get different lengths when using different forces to push the cursor to measure the same flexible object. Even the same operator will get different lengths when measuring the same flexible object in different states of fatigue, excitement, calmness, and sadness. This leads to huge errors in the vernier caliper measurement data in research fields such as life sciences and medicine that cannot be eliminated. The existence of these errors will cause researchers to misjudge when analyzing measurement data, interfering with the smooth progress of scientific research. Summary of the invention

[0005] The object of the present invention is to provide a caliper auxiliary tool to solve the problems of the prior art.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a caliper auxiliary tool, which is used to be installed on a vernier caliper, wherein the vernier caliper includes a main scale and a vernier scale, wherein the main scale extends along a first direction and is provided with a first measuring claw, and the vernier scale is provided with a second measuring claw; the caliper auxiliary tool includes:

[0007] a first connecting member, the first connecting member being used to be connected to the main scale;

[0008] a second connecting member, the second connecting member being used to be connected to the vernier ruler;

[0009] a first pressure sensor connected to the first connecting member and arranged to be adjustable to a position flush with an inner side of the first measuring claw; and

[0010] A second pressure sensor is connected to the second connecting member and is configured to be adjustable to a position flush with the inner side of the second measuring claw.

[0011] In one embodiment, the first connecting member comprises:

[0012] a first guide rail extending along the first direction, the first guide rail being used to be connected to the main scale;

[0013] a first sliding member, wherein the first sliding member is slidably connected to the first guide rail;

[0014] a first fastener connected to the first sliding member and operable to fix the first sliding member to the first guide rail;

[0015] The first pressure sensor is connected to the first sliding member.

[0016] In one embodiment, the first sliding member is detachably connected to the first guide rail.

[0017] In one embodiment, the first sliding member is provided with a first threaded hole;

[0018] The first fastener is a bolt installed in the first threaded hole.

[0019] In one embodiment, the first sliding member comprises:

[0020] a first sliding block, the first sliding block being slidably connected to the first guide rail and having the first threaded hole; and

[0021] a first adjusting member, the first adjusting member being connected to the first sliding block and being configured to adjust a position along a second direction and / or a third direction, wherein the second direction and the third direction are perpendicular to the first direction in pairs;

[0022] The first pressure sensor is connected to the first adjusting member.

[0023] In one embodiment, the first sliding member comprises:

[0024] a first sliding block, the first sliding block being slidably connected to the first guide rail and being provided with the first threaded hole;

[0025] a first adjusting member, the first adjusting member is connected to the first sliding block and is configured to adjust the position along a second direction and / or a third direction, wherein the second direction and the third direction are perpendicular to the first direction in pairs; the first adjusting member is provided with at least two second threaded holes;

[0026] a second adjusting member, the second adjusting member and the first adjusting member being arranged in a spaced relationship along the first direction and having a third threaded hole corresponding to the two second threaded holes; and

[0027] Two long screws, the two long screws are respectively screwed into the two third threaded holes from the two second threaded holes, and an elastic member is disposed outside each of the long screws, and the elastic member is located between the second adjusting member and the second adjusting member;

[0028] The first pressure sensor is connected to the second adjusting member.

[0029] In one embodiment, the first slider is provided with an adjustment hole and a fourth threaded hole extending along the second direction, and the fourth threaded hole extends from the outer side surface of the first slider to the adjustment hole;

[0030] A portion of the first adjusting member can move in the adjusting hole along the second direction and / or the third direction;

[0031] Another bolt is disposed in the fourth threaded hole to fix the first adjusting member.

[0032] In one embodiment, the structure of the second connecting member is the same as the structure of the first connecting member;

[0033] The assembly method of the second pressure sensor and the second connecting member is the same as the assembly method of the first pressure sensor and the first connecting member.

[0034] In one embodiment, the caliper auxiliary tool further comprises:

[0035] a control module, the control module being connected to the first pressure sensor and the second pressure sensor and configured to receive the pressure sensed by the first pressure sensor and the second pressure sensor;

[0036] Two indicator lights are respectively connected to the first connecting piece and the second connecting piece, and are electrically connected to the control module.

[0037] In one embodiment, the caliper auxiliary tool further includes a display, which is electrically connected to the control module and is used to display the pressures of the first pressure sensor and the second pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1, Figure 2 and Figure 3 It is a perspective view of a caliper auxiliary tool according to an embodiment of the present invention.

[0039] Figure 4 and Figure 5 yes Figure 1 Exploded view of the caliper assist tool in the illustrated embodiment.

[0040] Reference numerals; 1. caliper auxiliary tool; 1. first pressure sensor; 2. second pressure sensor; 3. first connecting member; 31. first slider; 311. first threaded hole; 312. adjustment hole; 313. fourth threaded hole; 32. first adjustment member; 321. crossbar; 322. vertical bar; 33. second adjustment member; 34. long bolt; 35. first guide rail; 4. second connecting member; 41. second slider; 42. third adjustment member; 43. fourth adjustment member; 44. second guide rail; 5. indicator light; 6. display; 7. switch; DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0042] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0043] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0044] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0045] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0046] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0047] The present invention relates to a caliper auxiliary tool 10, which is used to be installed on a vernier caliper to assist the vernier caliper in accurately measuring a flexible object.

[0048] A general vernier caliper includes a main scale, a vernier scale and at least two measuring jaws, wherein the main scale is a ruler of a certain length, and the main scale is defined to extend along a first direction. The two measuring jaws are defined to be a first measuring jaw and a second measuring jaw, wherein the first measuring jaw is fixedly mounted on the main scale, and the second measuring jaw is mounted on the vernier scale. The two measuring jaws described in the present invention are outer measuring jaws, i.e., two measuring jaws for measuring outer diameters.

[0049] The caliper auxiliary tool 10 includes a first connecting member 3, a second connecting member 4, a first pressure sensor 1 and a second pressure sensor 2, wherein the first connecting member 3 is used to be connected to the main scale of the vernier caliper, and the second connecting member 4 is used to be installed on the vernier scale of the vernier caliper.

[0050] In one embodiment, the first connecting member 3 can be fixed to the main scale by colloid, and the second connecting member 4 can also be fixed to the vernier scale by colloid. In other embodiments, the first connecting member 3 and the second connecting member 4 can also be fixed to the main scale and the vernier scale respectively by other methods, such as magnetic attraction.

[0051] The first pressure sensor 1 is connected to the first connecting member 3, and the first connecting member 3 can drive the first pressure sensor 1 to adjust to a position flush with the inner side of the first measuring claw, that is, the side opposite to the first measuring claw and the second measuring claw.

[0052] The second pressure sensor 2 is connected to the second connecting member 4, and the second connecting member 4 can drive the second pressure sensor 2 to adjust to a position flush with the second measuring claw. The second pressure sensor 2 also needs to be flush with the inner side of the second measuring claw, that is, the side of the second measuring claw opposite to the first measuring claw.

[0053] When the vernier caliper measures a flexible object, the second pressure sensor 2 moves with the movement of the vernier caliper. When the vernier caliper moves to against the flexible object, since the first pressure sensor 1 is flush with the first measuring claw and the second pressure sensor 2 is flush with the second measuring claw, when the first measuring claw and the second measuring claw respectively against the flexible object, the second pressure sensor 2 and the first pressure sensor 1 also respectively against the flexible object. The first pressure sensor 1 and the second pressure sensor 2 can sense the pressure of the flexible object and prompt the operator to stop pushing the vernier caliper to ensure the accuracy of the measurement.

[0054] In a preferred embodiment, the first connecting member 3 includes a first sliding member, a first fastener and a first guide rail 35 extending along a first direction. The first guide rail 35 is bonded to the main scale. It should be understood that the first guide rail 35 will not cover the scale of the main scale, that is, the first guide rail 35 is bonded to the back end of the main scale.

[0055] The first sliding member is detachably connected to the first guide rail 35, and the entire device can be conveniently dismantled when flexibility measurement is not required. In a preferred embodiment, the first sliding member is slidably connected to the first guide rail 35. The first fastener is connected to the first sliding member to fix the first sliding member to a preset position of the first guide rail 35.

[0056] Specifically, the first sliding member includes a first slider 31, a first adjusting member 32, and a second adjusting member 33, wherein the first slider 31 is slidably connected to the first guide rail 35, and two first threaded holes 311 are provided on the top of the first slider 31, and the two first threaded holes 311 respectively penetrate to the first guide rail 35 along the second direction, and the second direction is perpendicular to the first direction. The first fastener is two bolts screwed into the two first threaded holes 311, and when the first slider 31 slides to the preset position, the first slider 31 can be fixed to the preset position of the first guide rail 35 by rotating the bolts.

[0057] In addition, the bottom of the first slider 31 extends to the bottom end of the first guide rail 35 and is provided with an adjustment hole 312, which passes through the first slider 31 along the second direction. The first adjustment member 32 includes a crossbar 321 extending along the second direction and a vertical bar 322 extending along the vertical direction, wherein one end of the crossbar 321 is located in the adjustment hole 312 and can move in the adjustment hole 312 along the second direction and the third direction, and the other end is located outside the first slider 31 and is used to connect to the top of the vertical bar 322. The crossbar 321 and the vertical bar 322 can be integrally formed or fixedly connected.

[0058] In some embodiments, the cross bar 321 can only move in the second direction or the third direction in the adjustment hole 312, preferably in the second direction or the third direction in the adjustment hole 312, wherein the second direction, the third direction and the first direction are perpendicular to each other, and the third direction is Figure 1 vertical direction.

[0059] In order to fix the first adjusting member 32, a fourth threaded hole 313 is further provided at the bottom of the first slider 31. The fourth threaded hole 313 can extend from the outer end of the first slider 31 to the adjusting hole 312 along the first direction, and of course, can also extend from other directions to the adjusting hole 312. Another fastening bolt is installed in the fourth threaded hole 313 to fix the first adjusting member 32.

[0060] The vertical rod 322 of the first adjusting member 32 is provided with two second threaded holes, and the two second threaded holes are arranged at intervals in the vertical direction. The second adjusting member 33 is a rod-shaped member extending in the vertical direction and is arranged at intervals with the first adjusting member 32 in the first direction. The second adjusting member 33 is provided with two third threaded holes, and the two third threaded holes are arranged at intervals in the vertical direction and are respectively aligned with the two second threaded holes in the first direction.

[0061] The two long bolts 34 are respectively passed through the two second threaded holes of the vertical rod 322 and screwed into the two third threaded holes, and the spacing between the second adjusting member 33 and the first adjusting member 32 along the first direction can be controlled by the long bolts 34. In addition, an elastic member is sleeved outside the two long bolts 34, and the elastic member is a spring located between the vertical rod 322 and the second adjusting member 33, and the spring can push the second adjusting member 33 away from the first adjusting member 32.

[0062] The first pressure sensor 1 is connected to the second adjusting member 33 and is located on a side close to the first measuring claw. When the first pressure sensor 1 needs to be fine-tuned to a position flush with the first measuring claw, the second adjusting member 33 can be adjusted using two long bolts 34 to achieve this.

[0063] Of course, as an optional solution, the first pressure sensor 1 may also be connected to the first adjusting member 32 , that is, the second adjusting member 33 is not provided.

[0064] The second connecting member 4 is mounted on the vernier scale, and has a structure that is substantially the same or similar to that of the first connecting member 3. The second connecting member 4 also includes a guide rail and a sliding member. The guide rail of the second connecting member 4 is defined as a second guide rail 44. The sliding member also includes a second slider 41 and two adjustment members, and the two adjustment members are a third adjustment member 42 and a fourth adjustment member 43. The second guide rail 44 of the second connecting member 4 also extends along the first direction and is fixedly connected to the vernier scale. The second slider 41 is detachably connected to the guide rail and can slide along the second guide rail 44. The second slider 41 is also provided with an adjustment hole 312 and a threaded hole for installing a fastener, and is assembled in the same manner as the first slider 31 and the first guide rail 35. The fastener is a bolt, and the second slider 41 is fixed by the fastener and the threaded hole.

[0065] The third adjusting member 42 is similar in structure to the first adjusting member 32 . The third adjusting member 42 is connected to the second slider 41 and can slide along the second direction. It is also fixed by bolts. The position of the second pressure sensor 2 along the second direction can be adjusted by adjusting the third adjusting member 42 .

[0066] The fourth adjusting member 43 and the third adjusting member 42 are connected in the same manner as the second adjusting member 33 and the first adjusting member 32 , and are connected by two long bolts 34 , and springs are disposed outside the two long bolts 34 .

[0067] The second pressure sensor 2 is connected to the fourth adjusting member 43 , and the position of the second pressure sensor 2 along the first direction can be fine-tuned through the two fourth adjusting members 43 .

[0068] In general, the assembly method of the second pressure sensor 2 and the second connecting member 4 is the same as that of the first pressure sensor 1 and the first connecting member 3, except that some structural dimensions are slightly adjusted. For example, the length of the second guide rail 44 is slightly larger than the length of the first guide rail 35. The specific size specifications of each part can be set according to actual needs, and will not be repeated here.

[0069] The caliper auxiliary tool 10 also includes a control module, a display 6, two indicator lights 5 and a switch button 77. The control module is electrically connected to the first pressure sensor 1 and the second pressure sensor 2, and is used to receive the pressure sensed by the first pressure sensor 1 and the second pressure sensor 2. The two indicator lights 5 are electrically connected to the control module respectively. After receiving the pressure signal sensed by the first pressure sensor 1 and the second pressure sensor 2, the control module controls the two indicator lights 5 to display red, green or yellow. For example, red, green or yellow can be displayed according to the pressure of the first pressure sensor 1 or the second pressure sensor 2. Yellow, green and red represent different pressure values. When the pressure is greater than the set threshold, an alarm is issued through the indicator light 5. The operator determines whether to continue to advance the vernier according to the color of the indicator light 5.

[0070] In the present invention, the size of the second guide rail 44 is relatively large, and the internal integrated circuit board of the control module can be installed inside the second guide rail 44 .

[0071] Two indicator lights 5 are respectively mounted on the first connecting member 3 and the second connecting member 4 to indicate the pressure of the first pressure sensor 1 and the second pressure sensor 2 respectively.

[0072] The display 6 and the switch button 7 can be installed on the first connecting member 3 or the second connecting member 4, or installed at other positions of the caliper. The display 6 is electrically connected to the control module, and the specific pressure data of the first pressure sensor 1 and the second pressure sensor 2 can be displayed on the display 6. The display can also be used for content setting. The switch button 7 is electrically connected to the control module, the first pressure sensor 1 and the second pressure sensor 2. After turning on the switch button 7, the control module, the first pressure sensor 1 and the second pressure sensor 2 are powered on, and the operator can start the operation. In addition, the switch button 7 is also used to set the alarm thresholds of the first pressure sensor 1 and the second pressure sensor 2, and to reset the first pressure sensor 1 and the second pressure sensor 2.

[0073] The present invention designs a set of caliper auxiliary tools 10 that can assist the vernier caliper in flexible measurement. Two pressure sensors are respectively installed on the two measuring claws of the vernier caliper. When the two measuring claws of the vernier caliper contact the flexible object to be measured, the object to be measured will be compressed. At this time, the two pressure sensors detect the pressure readings of the compression. When the pressure reaches the set threshold, the indicator lights 5 on the two pressure sensors will prompt the operator that the vernier caliper has compressed the object to be measured and do not continue to push the vernier. Using the caliper auxiliary tool 10, the operator can push the vernier to measure with the same force every time, thereby eliminating the measurement error caused by different forces to the greatest extent, making the measurement data more accurate, and ensuring the smooth progress of scientific research. In addition, the caliper auxiliary tool 10 does not need to change the existing vernier caliper specifications, and can be directly installed on the existing vernier caliper, and can be adapted to vernier calipers of various specifications.

[0074] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0075] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0076] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A caliper auxiliary tool, the caliper auxiliary tool is used to be installed on a vernier caliper, the vernier caliper comprises a main scale and a vernier scale, the main scale extends along a first direction and is provided with a first measuring claw, the vernier scale is provided with a second measuring claw; characterized in that, The caliper auxiliary tool comprises: a first connecting member, the first connecting member being used to be connected to the main scale; a second connecting member, the second connecting member being used to be connected to the vernier ruler; a first pressure sensor connected to the first connecting member and arranged to be adjustable to a position flush with an inner side of the first measuring claw; and A second pressure sensor is connected to the second connecting member and is configured to be adjustable to a position flush with the inner side of the second measuring claw.

2. The caliper auxiliary tool according to claim 1, characterized in that: The first connecting member comprises: a first guide rail extending along the first direction, the first guide rail being used to be connected to the main scale; a first sliding member, wherein the first sliding member is slidably connected to the first guide rail; a first fastener connected to the first sliding member and operable to fix the first sliding member to the first guide rail; The first pressure sensor is connected to the first sliding member.

3. The caliper auxiliary tool according to claim 2, characterized in that: The first sliding member is detachably connected to the first guide rail.

4. The caliper auxiliary tool according to claim 3, characterized in that: The first sliding member is provided with a first threaded hole; The first fastener is a bolt installed in the first threaded hole.

5. The caliper auxiliary tool according to claim 4, characterized in that: The first sliding member comprises: a first sliding block, the first sliding block being slidably connected to the first guide rail and having the first threaded hole; and a first adjusting member, the first adjusting member being connected to the first sliding block and being configured to adjust a position along a second direction and / or a third direction, wherein the second direction and the third direction are perpendicular to the first direction in pairs; The first pressure sensor is connected to the first adjusting member.

6. The caliper auxiliary tool according to claim 4, characterized in that: The first sliding member comprises: a first sliding block, the first sliding block being slidably connected to the first guide rail and being provided with the first threaded hole; a first adjusting member, the first adjusting member is connected to the first sliding block and is configured to adjust the position along a second direction and / or a third direction, wherein the second direction and the third direction are perpendicular to the first direction in pairs; the first adjusting member is provided with at least two second threaded holes; a second adjusting member, the second adjusting member and the first adjusting member being arranged in a spaced relationship along the first direction and having a third threaded hole corresponding to the two second threaded holes; and Two long screws, the two long screws are respectively screwed into the two third threaded holes from the two second threaded holes, and an elastic member is disposed outside each of the long screws, and the elastic member is located between the second adjusting member and the second adjusting member; The first pressure sensor is connected to the second adjusting member.

7. The caliper auxiliary tool according to claim 5 or 6, characterized in that: The first slider is provided with an adjustment hole and a fourth threaded hole extending along the second direction, and the fourth threaded hole extends from the outer side surface of the first slider to the adjustment hole; A portion of the first adjusting member can move in the adjusting hole along the second direction and / or the third direction; Another bolt is disposed in the fourth threaded hole to fix the first adjusting member.

8. The caliper auxiliary tool according to any one of claims 1 to 6, characterized in that: The structure of the second connecting member is the same as that of the first connecting member; The assembly method of the second pressure sensor and the second connecting member is the same as the assembly method of the first pressure sensor and the first connecting member.

9. The caliper auxiliary tool according to claim 8, characterized in that: The caliper auxiliary tool also includes: a control module, the control module being connected to the first pressure sensor and the second pressure sensor and configured to receive the pressure sensed by the first pressure sensor and the second pressure sensor; Two indicator lights are respectively connected to the first connecting piece and the second connecting piece, and are electrically connected to the control module.

10. The caliper auxiliary tool according to claim 9, characterized in that: The caliper auxiliary tool further includes a display, which is electrically connected to the control module and is used to display the pressures of the first pressure sensor and the second pressure sensor.

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