Multifunctional thickness gauge and measuring method

Abstract

The present invention discloses a multifunctional thickness gauge and a measuring method. The multifunctional thickness gauge comprises a plurality of right-angled blades and a plurality of blade sheaths, a handheld blade sheath, a pin and a pin locking mechanism. The blade sheaths are right-angled and fixed in the handheld blade sheath by overlapping each other. The right-angled blades are respectively embedded in corresponding blade sheaths. One end of the right-angled blade is respectively fixedly connected to the pin, and one end of the blade sheath corresponding to the right-angled blade is hinged to the pin. The length of the other end of the blade sheath is less than the length of the corresponding end of the right-angled blade, and the pin locking mechanism is arranged on one end of the pin. The measuring method comprises 1) using the right-angled blade to measure the gap or length, and 2) using it as a verticality detection angle ruler to measure the verticality. The present invention has three functions of a feeler gauge, a straight ruler and a right-angle ruler, which expands the scope of use of the present invention. It can avoid bending the blade to measure the gap, thereby extending the service life of the thickness gauge.

Description

Technical Field

[0001] The invention relates to a thickness gauge, in particular to a thickness gauge with strong spatial adaptability and diverse functions and a measuring method, belonging to the technical field of benchwork measuring tools. Background Art

[0002] Thickness gauges are commonly used inspection tools for fitter construction work, mainly used to check whether the measured gap meets the assembly process requirements. Existing thickness gauges are generally composed of multiple scales and scale sleeves. During the assembly process of mechanical equipment, since the components are not yet fully in place, the measurement space is large, and the thickness gauge can be conveniently used to measure the gap values ​​between planes, curved surfaces, and special-shaped surfaces. However, when the measured area is affected by the assembly progress and the measurement space is limited, fitters usually use bending feeler gauges, removing scales, or adding bending rods to measure, which may damage the thickness gauge and inaccurate measurement. If the gap is found to be unqualified during measurement, it is often necessary to measure the verticality of the surface / surface to verify the combination accuracy of the assembly surface. At this time, a special verticality measuring instrument is required, and the operation is cumbersome. In order to overcome the above shortcomings, electronic seam measuring instruments, laser seam measuring instruments and other instruments and equipment can be used for measurement, but there are still defects such as limited use occasions and high costs. Summary of the invention

[0003] The purpose of the present invention is to provide a multifunctional thickness gauge and a measuring method which are simple in structure, easy to operate and low in cost and suitable for measuring gaps in narrow spaces.

[0004] The present invention is achieved through the following technical solutions:

[0005] A multifunctional thickness gauge comprises a plurality of adjacent right-angled blades with increasing or decreasing thicknesses and a plurality of blade sheaths, a handheld blade sheath, a pin and a pin locking mechanism, wherein the blade sheaths are right-angled, overlapped and fixed in the handheld blade sheath, and the right-angled blades are respectively embedded in corresponding blade sheaths; one end of the right-angled blades is respectively fixedly connected to the pin, and one end of the blade sheath corresponding to the right-angled blade is hinged to the pin; the length of the other end of the blade sheath is less than the length of the corresponding end of the right-angled blade; one end of the pin extends out of the corresponding end of the handheld blade sheath, and the pin locking mechanism is arranged on one end of the pin.

[0006] The purpose of the present invention can also be further achieved by the following technical measures:

[0007] Furthermore, the blade guard is made of two pieces of Teflon material with one side open and the other side closed, and the closed side of the blade guard is the inner side of the right angle of the blade guard.

[0008] Furthermore, length scale marks with a resolution of millimeters are respectively arranged on the outer sides of the long sides and on both sides of the short sides of the two sides of the right-angled scale piece, and thickness marks are also arranged at the corners of the two sides of the right-angled scale piece.

[0009] Furthermore, the thickest rectangular ruler is a verticality detection ruler, the two sides of the outer angle α of the verticality detection ruler are right angles to each other, the two sides of the inner angle β of the verticality detection ruler are also right angles to each other, and the verticality tolerances of the two sides of the outer angle α and the two sides of the inner angle β of the verticality detection ruler are both 0.05mm.

[0010] Furthermore, the pin shaft locking mechanism includes a ratchet, a pawl rod, a tension spring and a tension spring seat, the ratchet is fixed on the end of one end of the pin shaft, the pawl rod is located on the upper part of the ratchet, the pawl at one end of the pawl rod is perpendicular to the end of the pawl rod, the lower end of the pawl is embedded in the tooth groove of the ratchet, and the middle part of the pawl rod is hinged to the upper side of one end of the hand-held ruler sleeve through the pawl rod pin; the tension spring seat is fixed on the upper side of the pawl rod, the upper end of the tension spring is hooked on the tension spring seat, the lower end of the tension spring is hooked on the middle part of the pawl rod, and the other end of the pawl rod is connected to the button.

[0011] Furthermore, the pin shaft locking mechanism includes a friction wheel, a fan-shaped block rod, a tension spring and a tension spring seat, the friction wheel is fixed to the end of one end of the pin shaft, the upper end of the fan-shaped block is vertically fixedly connected to one end of the fan-shaped block rod, the lower outer edge of the fan-shaped block is pressed on the rim of the friction wheel, the middle part of the fan-shaped block rod is hinged to the upper side of one end of the hand-held ruler sleeve through the fan-shaped block rod pin, the tension spring seat is fixed to the upper side of the fan-shaped block rod, the upper end of the tension spring is hooked on the tension spring seat, the lower end of the tension spring is hooked on the middle part of the fan-shaped block rod, and the other end of the fan-shaped block rod is connected to the button.

[0012] Furthermore, an extension line of a line OA from the center of the pin shaft to the contact point between the sector block and the friction wheel passes through the center of the sector block.

[0013] A method for measuring a multifunctional thickness gauge includes the following different measuring steps:

[0014] 1) Before measuring the gap, according to the actual situation of limited space on site, hold the hand-held sheath with one hand, select a right-angled ruler of corresponding thickness with the other hand, pinch the long side of the right-angled ruler and rotate it counterclockwise around the center of the pin to open it, the ratchet or friction wheel rotates counterclockwise with the pin, and then extend the measuring end of the right-angled ruler into the gap to be measured; if the thickness of the right-angled ruler does not match the gap to be measured, press the button, the pawl at one end of the pawl rod is lifted and disengaged from the ratchet, or the fan-shaped block at one end of the fan-shaped block rod is disengaged from the friction wheel, and the right-angled ruler of the thickness can be rotated clockwise and stored in the corresponding ruler sheath; then select a right-angled ruler of another thickness and repeat the above process until the gap to be measured is detected;

[0015] 2) Use a rectangular ruler to measure the gap or length. The outer scale of the long side or the outer scale of the short side of the rectangular ruler is directly used to measure the length of the measured part, or to preliminarily measure the gap value, so as to select a rectangular ruler of corresponding thickness to measure the gap value;

[0016] 3) Used as a verticality detection angle ruler to measure verticality. Pull out the thickest rectangular ruler as the verticality detection angle ruler according to the method in step 1). The outer angle α and inner angle β of the verticality detection angle ruler are used to detect the corresponding vertical angles of the parts.

[0017] The rectangular ruler of the present invention has three functions: a feeler gauge, a ruler and a square ruler. The gap can be measured in a narrow space without bending the ruler, thereby avoiding damage to the rectangular ruler and extending the service life of the thickness gauge. The thickest rectangular ruler can be used as a square ruler to perform a preliminary check of verticality, and the rectangular ruler can be used as a ruler, thereby expanding the scope of use of the present invention. The pin locking mechanism of the present invention uses a ratchet mechanism or a friction wheel mechanism to lock the rectangular ruler in a desired angle range, and while adjusting the measuring angle of the rectangular ruler, the arbitrary rotation of the rectangular ruler is limited, making it easier to measure the gap and improving the accuracy of the gap measurement. The present invention can avoid bending the ruler to measure the gap, thereby extending the service life of the thickness gauge.

[0018] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0020] Figure 2 yes Figure 1 A magnified view of part I;

[0021] Figure 3 is a structural diagram of Embodiment 2 of the present invention;

[0022] Figure 4 yes Figure 3 Enlarged view of Part II. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1 and Figure 3As shown, the present invention comprises a plurality of adjacent right-angled blades 1 with increasing or decreasing thicknesses, a plurality of blade sheaths 2, a hand-held blade sheath 3, a pin 4 and a pin locking mechanism 5. The blade sheaths 2 are right-angled, overlapped and fixed in the hand-held blade sheath 3, and the right-angled blades 1 are respectively embedded in the corresponding blade sheaths 2. One end of the right-angled blade 1 is respectively fixedly connected to the pin 4, and the left end of the blade sheath 2 corresponding to the right-angled blade 1 is hinged to the pin 4. The length L1 of the right end of the blade sheath 2 is less than the length L of the corresponding end of the right-angled blade 1. One end of the pin 4 extends out of the corresponding end of the hand-held blade sheath 3, and the pin locking mechanism 5 is arranged on one end of the pin 4.

[0025] The blade sheath 2 is made of two pieces of Teflon material with one side open and the other side closed. The closed side of the blade sheath 2 is a right-angled inner side edge 21 of the blade sheath 2 .

[0026] Length scale marks 11 with a resolution of millimeters are respectively provided on the outside of the long sides and the two sides of the short sides of the two sides of the right-angled scale piece 1, so that the right-angled scale piece 1 can be used as a ruler. Thickness marks 12 are also provided at the corners of the two sides of the right-angled scale piece 1. The thickest right-angled scale piece 1 is a verticality detection angle ruler. The two sides of the outer angle α of the verticality detection angle ruler are right angles to each other, and the two sides of the inner angle β of the verticality detection angle ruler are also right angles to each other. The two sides of the outer angle α are right angles to each other, and the verticality tolerance of the two sides of the outer angle α and the two sides of the inner angle β of the verticality detection angle ruler is 0.05mm.

[0027] The pin locking mechanism of the present invention is divided into the following two embodiments:

[0028] Embodiment 1:

[0029] like Figure 2 As shown, the pin locking mechanism 5 includes a ratchet 51, a pawl rod 52, a tension spring 53 and a tension spring seat 54. The ratchet 51 is fixed to one end of the pin 4 by a flat key 55. The pawl rod 52 is located at the upper part of the ratchet 51. The pawl 521 at the left end of the pawl rod 52 is perpendicular to the left end of the pawl rod 52. The lower end of the pawl 521 is embedded in the tooth groove 511 of the ratchet 51. The middle part of the pawl rod 52 is hinged to the upper side of the left end of the hand-held ruler sleeve 3 through the pawl rod pin 56. The tension spring seat 54 is fixed to the upper side of the pawl rod 52. The upper end of the tension spring 53 is hooked on the tension spring seat 54. The lower end of the tension spring 53 is hooked on the middle part of the pawl rod 52. The right end of the pawl rod 52 is connected to the button 57.

[0030] Embodiment 2:

[0031] like Figure 4As shown, the pin shaft locking mechanism 5 includes a friction wheel 58, a sector block rod 59, a tension spring 53 and a tension spring seat 54. Compared with the first embodiment, the second embodiment has the same structure as the first embodiment except that the friction wheel 58 and the sector block rod 59 replace the ratchet wheel 51 and the pawl rod 52 of the first embodiment. The friction wheel 58 is fixed to the end of the pin shaft 4 by a flat key 55, the upper end of the sector block 591 is vertically fixedly connected to the left end of the sector block rod 59, and the lower outer edge of the sector block 591 is pressed on the rim of the friction wheel 58. The fan-shaped block 591 at the left end of the fan-shaped block rod 59 is located on the upper part of the friction wheel 58 and pressed on the rim of the friction wheel 58. The middle part of the fan-shaped block rod 59 is hinged to the upper side of the left end of the hand-held ruler sleeve 3 through the fan-shaped block rod pin 592. The tension spring seat 54 is fixed on the upper side of the fan-shaped block rod 59. The upper end of the tension spring 53 is hooked on the tension spring seat 54. The lower end of the tension spring 53 is hooked on the middle part of the fan-shaped block rod 59. The right end of the fan-shaped block rod 59 is connected to the button 57.

[0032] Since the extension line OA from the center of the pin shaft 4 to the contact point between the sector block 591 and the friction wheel 58 passes through the center of the sector block 591, the normal force of the sector block 591 squeezing the friction wheel 58 points to the center of the pin shaft 4, so no deflection torque is generated, thereby keeping the rectangular scale blade 1 within the required angle range.

[0033] Will Figure 2 When the rectangular scale blade 1 of the first embodiment shown is pulled out counterclockwise for use, the pin shaft 4 rotates counterclockwise therewith, and the pin shaft 4 pushes the pawl 521 through the gear teeth of the ratchet wheel 51 to overcome the pulling force of the tension spring 53 and lift up to disengage from the gear groove 511, the ratchet wheel 51 is unlocked, and the rectangular scale blade 1 can be rotated counterclockwise to a desired angle. When the ratchet wheel 51 stops rotating, the pawl 521 falls into the gear groove 511 under the action of the restoring force of the tension spring 53, thereby locking the pin shaft 4 and the rectangular scale blade 1, and realizing the step-by-step adjustment of the pulling-out angle of the rectangular scale blade 1.

[0034] Will Figure 4 When the rectangular scale blade 1 of the second embodiment shown is pulled out counterclockwise for use, the pin shaft 4 rotates counterclockwise therewith, and the friction wheel 58 pushes the fan-shaped block 591 to overcome the tension of the tension spring 53 and stop pressing the friction wheel 58, the friction wheel 58 is unlocked, and the rectangular scale blade 1 can be rotated counterclockwise to a desired angle. When the friction wheel 58 stops rotating, the fan-shaped block 591 presses the friction wheel 58 under the action of the restoring force of the tension spring 53, thereby locking the pin shaft 4 and the rectangular scale blade 1, realizing stepless adjustment of the pull-out angle of the rectangular scale blade 1, and facilitating the use of the rectangular scale blade 1 for measurement.

[0035] exist Figure 2In the first embodiment shown, when the right-angled ruler 1 needs to be stored, the button 57 at the right end of the pawl rod 52 is pressed, the tension spring 53 is pulled, the pawl 521 is lifted up and disengaged from the gear groove 511, and the pin 4 is unlocked at this time, so that the right-angled ruler 1 can be rotated clockwise and stored in the corresponding ruler sheath 2.

[0036] exist Figure 4 In the second embodiment shown, the button 57 at the right end of the sector block rod 59 is pressed, the tension spring 53 is pulled, and the sector block 591 moves up and disengages from the friction wheel 58. At this time, the pin 4 is unlocked, and the right-angled scale blade 1 can be rotated clockwise to be stored in the corresponding scale blade sheath 2.

[0037] The ratchet lever 52 or the fan-shaped block lever 59 of the present invention adopts the lever principle and can quickly lock or unlock the ratchet wheel 51 or the friction wheel 58 to achieve rapid locking or rapid unlocking of the rectangular ruler 1 after it is pulled open, thereby improving the convenience of use of the present invention.

[0038] A method for measuring a multifunctional thickness gauge includes the following different measuring steps:

[0039] 1) Before measuring the gap, according to the actual situation of limited space on site, hold the hand-held sheath 3 with one hand, select the right-angled blade 1 of corresponding thickness with the other hand, pinch the long side of the right-angled blade 1 and rotate it counterclockwise around the center of the pin 4 to open it, the ratchet 51 or the friction wheel 58 rotates counterclockwise with the pin 4, and then extend the measuring end of the right-angled blade 1 into the gap to be measured. If the thickness of the right-angled blade 1 does not match the gap to be measured, press the button 57, the ratchet 521 at the left end of the ratchet rod 52 is lifted and disengaged from the ratchet 51, or the fan-shaped block 591 at the left end of the fan-shaped block rod 59 is disengaged from the friction wheel 58, and the right-angled blade 1 of the thickness can be rotated clockwise and stored in the corresponding blade sheath 2. Select a right-angled blade 1 of another thickness and repeat the above process until the gap to be measured is completed.

[0040] 2) Use the rectangular ruler 1 to measure the gap or length. The outer scale of the long side or the outer scale of the short side of the rectangular ruler 1 is directly used to measure the length of the measured part, or to preliminarily measure the gap value, so as to determine the selection of the rectangular ruler of the corresponding thickness to measure the gap value.

[0041] 3) Used as a verticality detection angle ruler to measure verticality. Pull out the thickest rectangular ruler 1 as the verticality detection angle ruler according to the method in step 1). The outer angle α and inner angle β of the verticality detection angle ruler are used to detect the corresponding vertical angles of the parts.

[0042] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A multifunctional thickness gauge, characterized by: It comprises a plurality of adjacent right-angled blades with increasing or decreasing thicknesses and a plurality of blade sheaths, a hand-held blade sheath, a pin and a pin locking mechanism, wherein the blade sheaths are right-angled, overlapped and fixed in the hand-held blade sheath, and the right-angled blades are respectively embedded in corresponding blade sheaths; one end of the right-angled blade is respectively fixedly connected to the pin, one end of the blade sheath corresponding to the right-angled blade is hinged to the pin, and the length of the other end of the blade sheath is less than the length of the corresponding end of the right-angled blade; one end of the pin extends out of the corresponding end of the hand-held blade sheath, and the pin locking mechanism is arranged on one end of the pin; The blade sheath is made of two pieces of Teflon material with one side open and the other side closed, and the closed side of the blade sheath is the inner side of the right angle of the blade sheath; The pin shaft locking mechanism includes a friction wheel, a fan-shaped block rod, a fan-shaped block, a tension spring and a tension spring seat. The friction wheel is fixed to the end of one end of the pin shaft, the upper end of the fan-shaped block is vertically fixedly connected to one end of the fan-shaped block rod, the lower outer edge of the fan-shaped block is pressed on the rim of the friction wheel, and the middle part of the fan-shaped block rod is hinged to the upper side of one end of the hand-held ruler sleeve through the fan-shaped block rod pin; the tension spring seat is fixed to the upper side of the fan-shaped block rod, the upper end of the tension spring is hooked on the tension spring seat, the lower end of the tension spring is hooked on the middle part of the fan-shaped block rod, and the other end of the fan-shaped block rod is connected to the button.

2. The multifunctional thickness gauge according to claim 1, characterized in that: Length scale marks with a resolution of millimeters are respectively arranged on the outer sides of the long sides and the two sides of the short sides of the two sides of the right-angled ruler, and thickness marks are also arranged at the corners of the two sides of the right-angled ruler.

3. The multifunctional thickness gauge according to claim 1, characterized in that: The thickest rectangular ruler is the verticality detection ruler. The two sides of the outer angle α of the verticality detection ruler are right angles to each other, and the two sides of the inner angle β of the verticality detection ruler are also right angles to each other. The verticality tolerance of the two sides of the outer angle α and the two sides of the inner angle β of the verticality detection ruler is 0.05mm.

4. The multifunctional thickness gauge according to claim 1, characterized in that: The extension line of the line OA from the center of the pin shaft to the contact point between the sector block and the friction wheel passes through the center of the sector block.

5. A method for measuring a multifunctional thickness gauge according to any one of claims 1 to 4, characterized in that: The different measurement steps include: Step 1) Before measuring the gap, according to the actual situation of limited space on site, hold the hand-held sheath with one hand, select a right-angled ruler of corresponding thickness with the other hand, pinch the long side of the right-angled ruler and rotate it counterclockwise around the center of the pin shaft to open it, and the friction wheel rotates counterclockwise with the pin shaft, and then extend the measuring end of the right-angled ruler into the gap to be measured; if the thickness of the right-angled ruler does not match the gap to be measured, press the button, and the fan-shaped block at one end of the fan-shaped block rod will be separated from the friction wheel, and the right-angled ruler of this thickness can be rotated clockwise and stored in the corresponding ruler sheath; then select a right-angled ruler of another thickness, and repeat the above process until the detection of the gap to be measured is completed; Step 2) Use a rectangular ruler to measure the gap or length. The outer scale of the long side or the outer scale of the short side of the rectangular ruler is directly used to measure the length of the measured part, or to preliminarily measure the gap value, so as to select a rectangular ruler of corresponding thickness to measure the gap value; Step 3) Use the verticality detection ruler to measure verticality. Pull out the thickest rectangular ruler as the verticality detection ruler according to the method in step 1). The outer angle α and inner angle β of the verticality detection ruler are used to detect the corresponding vertical angles of the parts respectively.

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