A handheld non-contact optical measuring instrument

Abstract

The present invention relates to the field of metal processing technology, and more specifically, to a handheld non-contact optical measuring instrument, comprising an instrument body, an external device arranged at the front end of the instrument body, a driving device arranged above the instrument body, two sets of moving mechanisms moving in cooperation with the driving device, and an optical irradiation mechanism moving with the moving mechanism. In the handheld non-contact optical measuring instrument, twisting the knob in the driving device will change the relative positions of the two mounting parts, and through the cooperation of the flip part and the fixed rack, the positions of the two detection probes are transformed from parallel to symmetrical, so that the overall device can select different measurement methods according to different usage scenarios, avoiding errors caused by contact measurement, and enriching the application of the product in different scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a handheld non-contact optical measuring instrument. Background Art

[0002] During the processing of metal parts, from the perspective of the process, it is generally divided into processing stages from rough to fine. In the process of fine processing, it is sometimes performed multiple times, often accompanied by manual participation. After each processing step is completed, the manual measurement equipment such as vernier calipers and micrometers are used to measure whether the size of the parts meets the expectations.

[0003] The patent application number CN202010352583.X discloses a deep hole aperture optical measuring instrument, which uses refraction and reflection to change the optical path to measure the inner diameter of the small hole. It consists of a head seat, a reflector, a prism, a support leg, a connecting rod, a pin shaft, a hinge shaft, a linkage sleeve, a support tube, a pull sleeve, a locking nut, a connecting seat, a laser displacement ranging sensor, a battery and a handle, etc. It is positioned by the support legs on the head seat, locked with a locking nut, and the laser displacement ranging sensor emits a laser beam and receives the reflected light of the target to measure the inner diameter of the deep hole. It is simple and convenient to use.

[0004] During the quality inspection stage after parts are processed and before entering the warehouse, in addition to high-precision three-dimensional detection, most of the time operators prefer to use a series of contact tools such as vernier calipers for rapid detection. There are obvious random human errors, which may cause the measurement results to be inconsistent with the true values. However, if optical detection instruments are used for detection, when facing parts with complex surfaces and high precision requirements, two optical measurement devices, diffuse reflection and through-beam, must be configured to meet the dimensional measurement of workpieces of different sizes. In addition, the surface of some workpieces may be uneven or have sharp edges. When using a through-beam optical measurement device, if the workpiece collides with the signal transmission line of the detection probe, it will affect the measurement results.

[0005] In view of this, we propose a handheld non-contact optical measuring instrument. Summary of the invention

[0006] The object of the present invention is to provide a handheld non-contact optical measuring instrument to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A handheld non-contact optical measuring instrument comprises an instrument body, an external device arranged at the front end of the instrument body, a driving device arranged above the instrument body, two sets of moving mechanisms moving in coordination with the driving device, and an optical irradiation mechanism moving with the moving mechanisms;

[0009] The instrument body includes a fixed body, a handle arranged on the bottom surface of the fixed body, and a display arranged on the outer wall of the fixed body, and a photoelectric conversion module and a data processing system module are arranged inside the fixed body;

[0010] The external connection device includes a docking block, two outriggers arranged in parallel up and down, and fixed racks arranged at the corners of the outriggers;

[0011] The driving device comprises a knob, a transmission rod that rotates as the knob rotates, and a bidirectional screw that rotates as the transmission rod rotates;

[0012] The moving mechanism includes a mounting portion and a flip portion arranged at an end of the mounting portion;

[0013] The mounting part includes a mobile platform, a limit bracket arranged inside the mobile platform, and a first pressure spring that pushes the limit bracket to move outward by its own elastic force;

[0014] The flip part includes a flip plate, two outrigger rods arranged on both sides of the protrusion at the end of the flip plate, and rod end gears arranged at the ends of the outrigger rods;

[0015] The optical irradiation mechanism includes an outer cover body, two fixed rods arranged inside the outer cover body, a second pressure spring sleeved on the outside of the fixed rods, a moving slide slidably connected to the outsides of the two fixed rods, a transmission line that moves with the movement of the moving slide, and a detection probe connected below the transmission line.

[0016] In the technical solution of the present invention, the instrument body also includes a top convex bin snap-fitted to the top surface of the fixed body and a mounting block snap-fitted to the front end of the fixed body, and the handle is fixedly connected to the bottom surface of the fixed body by screws.

[0017] In the technical solution of the present invention, the docking block is fixedly connected to the mounting block by screws, a limiting groove with a T-shaped transverse cross-section is provided on the front side wall of the docking block, the outrigger bracket is clamped and fixed on the outer side wall of the docking block, and the fixed rack is welded and fixed at the end position of the outrigger bracket.

[0018] In the technical solution of the present invention, the center rod of the knob is rotatably connected to the outer side wall of the rear end of the top convex bin, the front and rear ends of the transmission rod are respectively rotatably connected to the bin walls at the front and rear ends of the top convex bin, the upper and lower ends of the bidirectional screw rod are respectively rotatably connected to the groove walls at the upper and lower ends of the limiting slide groove, and the top end of the bidirectional screw rod extends to the top of the docking block.

[0019] In the technical solution of the present invention, a main bevel gear is clamped at the end of the knob center rod, a secondary bevel gear meshing with the main bevel gear is clamped on the outer wall of the rear end of the transmission rod, a worm is sleeved on the front end of the transmission rod, and a worm wheel meshing with the worm is clamped at the top end of the bidirectional screw.

[0020] In the technical solution of the present invention, the mobile platform is slidably connected to the interior of the limiting slide groove and is threadedly connected to the bidirectional screw rod. A placement groove is provided inside the mobile platform, and rotating holes are provided inside the two protrusions at the front end of the mobile platform. A circular hole connected to the placement groove is provided on the hole wall of the rotating hole.

[0021] In the technical solution of the present invention, the limit bracket is slidably connected to the inside of the placement groove, the ends of the round rods at both ends of the limit bracket are hemispherical and extend to the inside of the rotating hole, one end of the first pressure spring is adhered to the outer wall of the limit bracket, and the other end is adhered to the groove wall of the placement groove.

[0022] In the technical solution of the present invention, the outrigger rod is rotatably connected to the inside of the rotating hole, and a plurality of rod body openings matching the sizes of the round rods at both ends of the limiting bracket are opened on the outer wall of the outrigger rod, and the rod end gear is clamped and fixed at the end position of the outrigger rod.

[0023] In the technical solution of the present invention, the outer sleeve cover is clamped and fixed to the outer wall of the fixed body, the two ends of the fixed rod body are clamped and fixed to the inside of the outer sleeve cover, one end of the second pressure spring is adhered to the inner wall of the outer sleeve cover, and the other end is adhered to the outer wall of the movable slide, and the elastic force provided by the second pressure spring is used to pull the movable slide backward.

[0024] In the technical solution of the present invention, the transmission line is adhered to the inside of the movable slide, the detection probe is clamped and fixed on the outer wall of the flip plate, the upper detection probe is loaded with a light transmitter, and the lower detection probe is loaded with a light receiver.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This handheld non-contact optical measuring instrument, twisting the knob in the drive device will change the relative positions of the two mounting parts, and through the cooperation of the flip part and the fixed rack, the positions of the two detection probes are transformed from parallel to symmetrical, so that the overall device can choose different measurement methods according to different usage scenarios, avoiding errors caused by contact measurement, and enriching the application of the product in different scenarios.

[0027] 2. In the handheld non-contact optical measuring instrument, when the optical irradiation mechanism as a whole moves with the mounting part, the elastic force provided by the second pressure spring is used to pull the moving slide backward, and the part where the transmission line is connected to the detection probe will be retracted into the interior of the outer cover together, thereby effectively avoiding direct contact between the detection probe and the signal transmission line and the workpiece, preventing the possibility of damage or wear, and reducing the measurement error caused by shaking or deviation after the transmission line collides with the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0029] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure cutaway of the instrument body in the present invention;

[0031] Figure 4 It is a schematic cross-sectional view of a part of the structure of the present invention;

[0032] Figure 5 is a schematic diagram of the structure of the external device in the present invention;

[0033] Figure 6 For the present invention Figure 5 A magnified schematic diagram of part A;

[0034] Figure 7 It is a schematic diagram of the structure of the driving device in the present invention;

[0035] Figure 8 It is a structural schematic diagram of the moving mechanism in the present invention;

[0036] Fig. 9 It is a schematic cross-sectional view of the structure of the installation part in the present invention;

[0037] Fig.10 It is a structural schematic diagram of the turning part in the present invention;

[0038] Fig.11 It is a structural schematic diagram of the optical irradiation mechanism in the present invention;

[0039] Description of reference numerals:

[0040] 100, instrument body; 110, fixed body; 120, handle; 130, top convex bin; 140, mounting block; 150, display;

[0041] 200, external device; 210, docking block; 211, limiting slide; 220, outrigger; 230, fixed rack;

[0042] 300, driving device; 310, knob; 320, transmission rod; 330, bidirectional screw; 340, main bevel gear; 350, auxiliary bevel gear; 360, worm; 370, worm wheel;

[0043] 400, moving mechanism; 410, mounting portion; 411, moving platform; 4110, placement slot; 4111, rotation hole; 412, limit bracket; 413, first pressure spring; 420, flip portion; 421, flip plate; 422, extension rod; 4220, rod body opening; 423, rod end gear;

[0044] 500, optical irradiation mechanism; 510, outer cover; 520, fixed rod; 530, second pressure spring; 540, movable slide; 550, transmission line; 560, detection probe. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 11 As shown, this embodiment provides a technical solution:

[0047] A handheld non-contact optical measuring instrument comprises an instrument body 100, an external device 200 arranged at the front end of the instrument body 100, a driving device 300 arranged above the instrument body 100, two sets of moving mechanisms 400 moving in coordination with the driving device 300, and an optical irradiation mechanism 500 moving with the moving mechanism 400;

[0048] In this embodiment, Figure 3 As shown, the instrument body 100 includes a fixed body 110, a handle 120 disposed on the bottom surface of the fixed body 110, and a display 150 disposed on the outer wall of the fixed body 110. A photoelectric conversion module and a data processing system module are disposed inside the fixed body 110. The above is the prior art and will not be repeated here.

[0049] Specifically, the instrument body 100 also includes a top convex bin 130 snap-fitted to the top surface of the fixed body 110 and a mounting block 140 snap-fitted to the front end of the fixed body 110, and the handle 120 is fixedly connected to the bottom surface of the fixed body 110 by screws.

[0050] Furthermore, the handle 120 is used to facilitate the inspector to hold the instrument body 100, the top convex bin 130 is used to provide a placement area for the drive device 300, and the photoelectric conversion module inside the fixed body 110 is used to convert the optical signal into an electrical signal and input the electrical signal into the data processing system module. The data processing system module is used to process the electrical signal through a data processing algorithm and display the numerical value of the key dimension of the workpiece on the surface of the display 150. The above is the principle of the prior art and will not be repeated here.

[0051] In this embodiment, Figure 5 As shown, the external device 200 includes a docking block 210, two outriggers 220 arranged in parallel up and down, and a fixed rack 230 arranged at the corners of the outriggers 220;

[0052] Specifically, the docking block 210 is fixedly connected to the mounting block 140 by screws, a limiting groove 211 with a T-shaped transverse cross-section is provided on the front side wall of the docking block 210, the outrigger bracket 220 is clamped and fixed on the outer side wall of the docking block 210, and the fixed rack 230 is welded and fixed at the end position of the outrigger bracket 220.

[0053] Furthermore, the docking block 210 is used to provide a mobile platform for the mobile mechanism 400, the limiting slide groove 211 is used to limit the moving range of the internal structure of the mobile mechanism 400, the outrigger 220 is used to determine the passing range of the workpiece, and the fixed rack 230 is used to cooperate with the internal structure of the mobile mechanism 400 to allow it to flip.

[0054] In this embodiment, Figure 7 As shown, the driving device 300 includes a knob 310, a transmission rod 320 that rotates as the knob 310 rotates, and a bidirectional screw rod 330 that rotates as the transmission rod 320 rotates;

[0055] Specifically, the center rod of the knob 310 is rotatably connected to the outer wall of the rear end of the top convex bin 130, the front and rear ends of the transmission rod 320 are respectively rotatably connected to the bin walls at the front and rear ends of the top convex bin 130, the upper and lower ends of the bidirectional screw rod 330 are respectively rotatably connected to the groove walls at the upper and lower ends of the limiting slide groove 211, and the top end of the bidirectional screw rod 330 extends to the top of the docking block 210.

[0056] Furthermore, a main bevel gear 340 is clamped on the end of the center rod of the knob 310, a secondary bevel gear 350 meshing with the main bevel gear 340 is clamped on the outer wall of the rear end of the transmission rod 320, a worm 360 is sleeved on the front end of the transmission rod 320, and a worm wheel 370 meshing with the worm 360 is clamped on the top end of the bidirectional screw 330.

[0057] Furthermore, the knob 310 is twisted to drive the main bevel gear 340 at the end of the center rod to rotate. After the main bevel gear 340 conflicts with the secondary bevel gear 350, the secondary bevel gear 350 and the transmission rod 320 are driven to rotate. At this time, the worm 360 at the end of the transmission rod 320 will rotate, and after cooperating with the worm wheel 370, it drives the bidirectional screw rod 330 to rotate.

[0058] In this embodiment, Figure 8-Figure 9 As shown, the moving mechanism 400 includes a mounting portion 410 and a flip portion 420 disposed at the end of the mounting portion 410;

[0059] Specifically, the mounting portion 410 includes a moving platform 411 , a limiting bracket 412 disposed inside the moving platform 411 , and a first pressure spring 413 that pushes the limiting bracket 412 to move outwards by its own elastic force.

[0060] Furthermore, the mobile platform 411 is slidably connected to the interior of the limiting slide groove 211 and is threadedly connected to the bidirectional screw rod 330. A placement groove 4110 is opened inside the mobile platform 411. Rotating holes 4111 are opened inside the two protrusions at the front end of the mobile platform 411. A circular hole connected to the placement groove 4110 is opened on the hole wall of the rotating hole 4111.

[0061] Furthermore, the limiting bracket 412 is slidably connected to the inside of the placement groove 4110, the ends of the round rods at both ends of the limiting bracket 412 are hemispherical and extend to the inside of the rotating hole 4111, one end of the first pressure spring 413 is adhered to the outer wall of the limiting bracket 412, and the other end is adhered to the groove wall of the placement groove 4110.

[0062] Furthermore, when the bidirectional screw rod 330 rotates, the positions of the two movable platforms 411 move away from each other, the placement groove 4110 is used to provide a moving range for the limit bracket 412, the rotation hole 4111 is used to provide a rotation range for the structure in the flipping part 420, and the elastic force provided by the first pressure spring 413 is used to push the limit bracket 412 to move outward.

[0063] In this embodiment, Figure 8-Figure 9 As shown, the flip part 420 includes a flip plate 421, two outrigger rods 422 disposed on both sides of the protrusion at the end of the flip plate 421, and a rod end gear 423 disposed at the end of the outrigger rod 422;

[0064] Specifically, the extension rod 422 is rotatably connected to the inside of the rotating hole 4111, and a plurality of rod body openings 4220 matching the sizes of the round rods at both ends of the limiting bracket 412 are opened on the outer wall of the extension rod 422, and the rod end gear 423 is clamped and fixed at the end position of the extension rod 422.

[0065] Furthermore, the flip plate 421 is used to provide a placement platform for the structure inside the optical illumination mechanism 500. When the rod end gear 423 in the flip part 420 conflicts with the fixed rack 230, it drives the flip plate 421 to flip 90° as a whole, thereby changing the relative positions of a pair of internal structures of the optical illumination mechanism 500. The rod body opening 4220 is used to cooperate with the limiting bracket 412 to ensure the stability of the position of the flip plate 421 after flipping.

[0066] In this embodiment, Fig.11 As shown, the optical irradiation mechanism 500 includes an outer cover 510, two fixed rods 520 disposed inside the outer cover 510, a second pressure spring 530 sleeved on the outside of the fixed rods 520, a moving slide 540 slidably connected to the outside of the two fixed rods 520, a transmission line 550 that moves with the movement of the moving slide 540, and a detection probe 560 connected below the transmission line 550;

[0067] Specifically, the outer cover body 510 is clamped and fixed to the outer wall of the fixed body 110, and the two ends of the fixed rod body 520 are clamped and fixed to the inside of the outer cover body 510. One end of the second pressure spring 530 is adhered to the inner wall of the outer cover body 510 and the other end is adhered to the outer wall of the movable slide 540. The elastic force provided by the second pressure spring 530 is used to pull the movable slide 540 backward.

[0068] Furthermore, the transmission line 550 is adhered to the inside of the movable slide plate 540, and the detection probe 560 is clamped and fixed on the outer wall of the flip plate 421. The upper detection probe 560 is loaded with a light transmitter, and the lower detection probe 560 is loaded with a light receiver.

[0069] Furthermore, the outer cover 510 and the fixed rod 520 are used to limit the moving range of the movable slide 540. When the detection probe 560 moves close to the outer cover 510, the position of the movable slide 540 moves backward, and the part connecting the transmission line 550 and the detection probe 560 is retracted into the interior of the outer cover 510.

[0070] When the handheld non-contact optical measuring instrument of the present invention is used, when facing a large-sized workpiece, the button on the handle 120 is pressed, and the light emitter located in the upper detection probe 560 emits diffuse reflection high-density infrared light to the surface of the target workpiece;

[0071] At this time, the light receiver in the lower detection probe 560 receives the residual light beam emitted by the target object and the light beam emitted by the light transmitter after being blocked by the target object, and the light signal immediately enters the photoelectric conversion module inside the fixed body 110, and the photoelectric conversion module immediately converts the light signal into an electrical signal, and inputs the electrical signal into the data processing system module, and the data processing system module compares the electrical signal data corresponding to the light signal emitted by the upper detection probe 560 with the received electrical signal, and after identifying the difference before and after, the value of the key dimension of the target workpiece is displayed on the surface of the display 150 through the data processing algorithm;

[0072] Then, when facing a small-sized workpiece, the knob 310 is twisted to drive the main bevel gear 340 at the end of the center rod to rotate. After the main bevel gear 340 contacts the auxiliary bevel gear 350, the auxiliary bevel gear 350 and the transmission rod 320 are driven to rotate. At this time, the worm 360 at the end of the transmission rod 320 rotates and cooperates with the worm wheel 370 to drive the bidirectional screw rod 330 to rotate.

[0073] When the bidirectional screw rod 330 rotates, the positions of the two moving platforms 411 move away from each other. When the rod end gear 423 in the flip part 420 contacts the fixed rack 230, the flip plate 421 is flipped 90 degrees as a whole, and the two detection probes 560 are transformed from parallel to symmetrical.

[0074] Afterwards, when the target workpiece passes between the two detection probes 560, when the light emitted by the upper detection probe 560 passes through the target workpiece or is blocked by the target object, the lower detection probe 560 receives the light that passes through the object or is not blocked, and calculates the size of the target object by analyzing the light obstruction or propagation time through the data processing system module in the fixed body 110, and displays the numerical value of the key size of the target workpiece on the surface of the display 150.

[0075] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A handheld non-contact optical measuring instrument, comprising an instrument body (100), an external device (200) arranged at the front end of the instrument body (100), a driving device (300) arranged above the instrument body (100), two sets of moving mechanisms (400) moving in coordination with the driving device (300), and an optical irradiation mechanism (500) moving along with the moving mechanism (400); The instrument body (100) comprises a fixed body (110), a handle (120) arranged on the bottom surface of the fixed body (110), and a display (150) arranged on the outer side wall of the fixed body (110); a photoelectric conversion module and a data processing system module are arranged inside the fixed body (110); Features: The external connection device (200) comprises a docking block (210), two outriggers (220) arranged in parallel up and down, and a fixed rack (230) arranged at the corners of the outriggers (220); The driving device (300) comprises a knob (310), a transmission rod (320) that rotates as the knob (310) rotates, and a bidirectional screw rod (330) that rotates as the transmission rod (320) rotates; The moving mechanism (400) comprises a mounting portion (410) and a flip portion (420) arranged at the end of the mounting portion (410); The mounting portion (410) comprises a moving platform (411), a limiting bracket (412) arranged inside the moving platform (411), and a first pressure spring (413) that pushes the limiting bracket (412) to move outwards through its own elastic force; The flip part (420) comprises a flip plate (421), two outrigger rods (422) arranged on both sides of a protruding block at the end of the flip plate (421), and a rod end gear (423) arranged at the end of the outrigger rods (422); The optical irradiation mechanism (500) comprises an outer cover body (510), two fixed rod bodies (520) arranged inside the outer cover body (510), a second pressure spring (530) sleeved on the outside of the fixed rod bodies (520), a movable slide plate (540) slidably connected to the outside of the two fixed rod bodies (520), a transmission line (550) that moves with the movement of the movable slide plate (540), and a detection probe (560) connected below the transmission line (550).

2. The handheld non-contact optical measuring instrument according to claim 1, characterized in that: The instrument body (100) further comprises a top convex bin (130) snap-fitted and fixed to the top surface of the fixed body (110) and a mounting block (140) snap-fitted and fixed to the front end of the fixed body (110); the handle (120) is fixedly connected to the bottom surface of the fixed body (110) by means of screws.

3. The handheld non-contact optical measuring instrument according to claim 2, characterized in that: The docking block (210) is fixedly connected to the mounting block (140) by means of screws; a limiting sliding groove (211) having a T-shaped transverse cross section is provided on the front side wall of the docking block (210); the outrigger (220) is fixedly engaged with the outer side wall of the docking block (210); and the fixed rack (230) is fixedly welded to the end of the outrigger (220).

4. The handheld non-contact optical measuring instrument according to claim 3, characterized in that: The center rod of the knob (310) is rotatably connected to the outer side wall of the rear end of the top convex bin (130), the front and rear ends of the transmission rod (320) are respectively rotatably connected to the bin walls at the front and rear ends of the top convex bin (130), the upper and lower ends of the bidirectional screw rod (330) are respectively rotatably connected to the groove walls at the upper and lower ends of the limiting sliding groove (211), and the top end of the bidirectional screw rod (330) extends to the top of the docking block (210).

5. The handheld non-contact optical measuring instrument according to claim 1, characterized in that: A main bevel gear (340) is clamped on the end of the center rod of the knob (310), a secondary bevel gear (350) meshing with the main bevel gear (340) is clamped on the outer wall of the rear end of the transmission rod (320), a worm (360) is sleeved on the front end of the transmission rod (320), and a worm wheel (370) meshing with the worm (360) is clamped on the top end of the bidirectional lead screw (330).

6. The handheld non-contact optical measuring instrument according to claim 3, characterized in that: The mobile platform (411) is slidably connected to the interior of the limiting sliding groove (211) and is threadedly connected to the bidirectional screw rod (330). A placement groove (4110) is provided inside the mobile platform (411). Rotation holes (4111) are provided inside two protrusions at the front end of the mobile platform (411). A circular hole connected to the placement groove (4110) is provided on the hole wall of the rotation hole (4111).

7. The handheld non-contact optical measuring instrument according to claim 6, characterized in that: The limiting bracket (412) is slidably connected to the inside of the placement groove (4110), the ends of the round rods at both ends of the limiting bracket (412) are hemispherical and extend to the inside of the rotating hole (4111), and one end of the first pressure spring (413) is adhered to the outer wall of the limiting bracket (412) and the other end is adhered to the groove wall of the placement groove (4110).

8. The handheld non-contact optical measuring instrument according to claim 6, characterized in that: The outrigger rod (422) is rotatably connected to the inside of the rotating hole (4111); a plurality of rod body openings (4220) matching the sizes of the round rods at both ends of the limiting bracket (412) are provided on the outer side wall of the outrigger rod (422); and the rod end gear (423) is clamped and fixed at the end position of the outrigger rod (422).

9. The handheld non-contact optical measuring instrument according to claim 1, characterized in that: The outer cover body (510) is clamped and fixed on the outer wall of the fixed body (110), and the two ends of the fixed rod body (520) are clamped and fixed inside the outer cover body (510). One end of the second pressure spring (530) is adhered to the inner wall of the outer cover body (510) and the other end is adhered to the outer wall of the movable slide plate (540). The elastic force provided by the second pressure spring (530) is used to pull the movable slide plate (540) to move backward.

10. The handheld non-contact optical measuring instrument according to claim 1, characterized in that: The transmission line (550) is adhered to the inside of the movable slide plate (540), the detection probe (560) is clamped and fixed on the outer wall of the flip plate (421), the detection probe (560) located at the top is loaded with a light transmitter, and the detection probe (560) located at the bottom is loaded with a light receiver.

Images