A handheld laser rangefinder capable of improving contact stability

Abstract

The present invention discloses a handheld laser rangefinder capable of improving contact stability. The main detection structure of the handheld laser rangefinder is composed of an infrared laser distance measuring device. An adjusting push rod is fixedly connected to the side of the left rotating drum. An directional frame for controlling the handheld angle is fixedly arranged on the side of the right rotating drum. The handheld laser rangefinder comprises: an inner limit column, which is rotatably connected to the inside of the front plate, and a fixing rod is installed through the inside of the inner limit column; an extension frame, which is fixedly arranged on the outer side of the directional frame, and a fingertip placement block is fixedly installed on the inner side of the extension frame; and a protective tube, which is installed through the inside of the outer limit column. The handheld laser rangefinder capable of improving contact stability adopts a new structural design, so that the handheld structure of the device is relatively stable, and the angle corresponding to the handheld structure and the distance measuring device can be adjusted according to the situation at the construction measurement site, and the distance measuring operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of laser rangefinders, and in particular to a handheld laser rangefinder capable of improving contact stability. Background Art

[0002] A laser rangefinder is a distance measuring device that measures distance through infrared irradiation. It is widely used in the construction and decoration industries. When it is necessary to draw a blueprint of a building, first draw a rough distribution diagram between the walls, and then use the laser rangefinder to measure the distance between each wall and the thickness of the wall. The laser rangefinders used in the construction industry are generally handheld and convenient for measurement. The application number is CN202022957722.X, which is a handheld laser rangefinder with an anti-slip structure. The device is provided with anti-slip grooves and anti-slip patterns, which can increase the anti-slip effect of the equipment and greatly increase the stability of the handheld device when used. However, there are still certain problems in the actual measurement of handheld laser rangefinders.

[0003] 1. The handheld laser rangefinder is placed in the user's palm during measurement. The handheld contact surface is large. Many building environments are not equipped with air conditioning and other temperature control equipment. In the high temperature environment in summer, the user's palm is in large contact with the laser rangefinder, which makes it easy to sweat. The user's comfort level is low, and the stability of contact with the laser rangefinder is also affected.

[0004] 2. For indoor measurements, it is more accurate to attach the laser rangefinder to the wall. However, the walls on the sides of some door openings are at corners. The handheld laser rangefinder is attached to the surface of the short wall and is blocked by the corner wall on the other side. The stability and verticality of the laser rangefinder are difficult to control, and it is not convenient for users to control the buttons for measurement, making the operation difficult.

[0005] Therefore, it is necessary to design a handheld laser rangefinder that can improve contact stability in response to the above problems. Summary of the invention

[0006] The object of the present invention is to provide a handheld laser rangefinder with improved contact stability, so as to solve the problem that the handheld laser rangefinder proposed in the above background technology is set in the palm of the user for use during the measurement process, and the handheld contact surface is large. Many of the building environments measured are not equipped with temperature control equipment such as air conditioners. In the high temperature environment in summer, the user's palm is in large-area contact with the laser rangefinder, which makes it easy to sweat, and the comfort of holding is low, and the stability of the contact with the laser rangefinder is also affected. Indoor measurement, it is more accurate to attach the laser rangefinder to the wall, but the wall on the side of some door openings is at the corner. The handheld laser rangefinder is attached to the surface of the short wall and is blocked by the corner wall on the other side. The stability and verticality of the laser rangefinder are difficult to control, and it is not convenient for the user to control the buttons for measurement, which makes the operation difficult.

[0007] To achieve the above object, the present invention provides the following technical solutions: a handheld laser rangefinder capable of improving contact stability, wherein the main detection structure of the handheld laser rangefinder is composed of an infrared laser rangefinder, and a fixing seat is symmetrically installed on both sides of the outside of the infrared laser rangefinder, and a left rotating cylinder and a right rotating cylinder are rotatably connected inside the two sides of the fixing seat respectively;

[0008] An adjusting push rod is fixedly connected to the side of the left rotating drum;

[0009] An directional frame for controlling the hand-holding angle is fixedly arranged on the side of the right rotating drum, and a front plate is fixedly installed at the middle position of the front side of the directional frame;

[0010] A handheld laser rangefinder capable of improving contact stability, comprising:

[0011] An inner limit column, which is rotatably connected to the inside of the front plate, and a fixing rod is installed through the inside of the inner limit column, and a pressing block with a pressing distance measurement function is fixedly arranged on the side of the fixing rod;

[0012] An extension frame, which is fixedly arranged on the outer side of the directional frame, and a fingertip placement block is fixedly installed on the inner side of the extension frame, and an outer limit column is rotatably connected to the inner middle position of the extension frame;

[0013] A protection tube is arranged to penetrate the interior of the outer limiting column, and an adjustment button driven by a thumb to press and rotate is fixedly installed on the outer side of the protection tube.

[0014] Preferably, the lower end of the directional frame forms a rotating structure with the fixed seat through the right rotating drum, and the rotation range of the directional frame is 0-90°, and the directional frame also includes a bottom support frame and a top support frame:

[0015] A bottom support frame is fixedly mounted on the outside of the right rotating drum, and a locking device with a tightening function is rotatably provided through the side surface of the bottom support frame;

[0016] The top support frame is correspondingly connected to the side of the bottom support frame, a limited position mounting seat is welded and fixed at the middle position of the outer side surface of the top support frame, and a transmission cylinder is connected to the interior of the limited position mounting seat.

[0017] Preferably, the transmission cylinder forms a rotating structure with the top support frame through a limit mounting seat, the top support frame and the bottom support frame form a telescopic structure, and the transmission cylinder is fixedly connected to one end of the adjusting push rod, and the other end of the adjusting push rod forms a rotating structure with a fixed seat through a left rotating cylinder. When the directional frame is controlled to rotate by the right rotating cylinder, it is convenient to adjust the corresponding angle between the infrared laser ranging device and the directional frame, thereby facilitating the control of the infrared laser ranging device to fit the wall surface.

[0018] Preferably, the inner limit column and the outer limit column form a linear control sliding and rotation transmission structure, and the inner and outer sides of the inner limit column are also provided with bearings and a linear slide plate:

[0019] A bearing is embedded and fixed inside the front plate, the inner limit column is rotatably arranged inside the bearing, and a vortex spring group is installed at the middle position outside the inner limit column;

[0020] A linear slide plate is provided through and clamped on both sides of the inner limit column, and the linear slide plate is fixedly installed on the outside of the fixing rod.

[0021] Preferably, the outer side of the fixed rod forms a linear sliding structure with the inner limit column through a linear slide plate, and the outer side of the inner limit column forms an elastic structure with the front plate through a vortex spring group. The protective tube and the fixed rod are controlled to rotate by an adjusting button, at which time the inner limit column and the outer limit column rotate accordingly, and the inner limit column and the outer limit column can be controlled to rotate and reset under the elastic thrust of the vortex spring group. The fixed rod arranged in the rotating structure controls the rotation of the pressing block, and the ranging button on the surface of the infrared laser ranging device is pressed to measure the distance, which is convenient to operate.

[0022] Preferably, a positioning plate is fixedly installed in the middle position on the inner side of the outer limit column, and the positioning plate is penetrated through the side of the protective tube through a side slide groove, and the side slide groove is opened on the side wall of the protective tube. When the protective tube is pressed and moved by controlling the adjustment button, the positioning plate slides correspondingly on the inner and outer sides of the protective tube through the side slide groove.

[0023] Preferably, the interior of the protective tube is also provided with a built-in round rod, a linear slide rail and a fixed disc:

[0024] An internal round rod, one end of which is fixedly mounted at the middle position of the side of the positioning plate, and the other end of the internal round rod is fixedly mounted with a rectangular sheet;

[0025] A linear slide rail is symmetrically fixed on both sides of the inner part of the protection tube, and a linear slider is correspondingly installed on the outer part of the linear slide rail;

[0026] The fixed disc is fixedly mounted on the inner wall of the protection tube, and a return spring is connected to the side surface of the fixed disc.

[0027] Preferably, the rectangular sheet, built-in round rod and positioning plate are fixed into an integrated structure, and both sides of the rectangular sheet form a left-right sliding structure with the linear slide rail through linear sliders, and at the same time, the side of the rectangular sheet forms an elastic connection structure with the fixed circular disc through a reset spring. When the adjustment button and the protective tube are pressed, the distance between the rectangular sheet and the fixed circular disc changes, and the reset spring installed on the inner side thereof is compressed. The compressed reset spring can control the protective tube and the adjustment button to move outward and reset under the action of the elastic thrust.

[0028] Preferably, the built-in round rod is slidably arranged inside the fixed disc, and the side surface of the built-in round rod and the fixed rod form a telescopic structure. At the same time, the pressing block fixed on the side surface of the fixed rod is correspondingly arranged on the side surface of the ranging button of the infrared laser ranging device. During the process of pressing the ranging, the built-in round rod telescopically moves on the side surface of the fixed rod to cooperate with the pressing transmission.

[0029] Preferably, two groups of fingertip placement blocks are symmetrically arranged on the inner side of the extension frame, and the groove structure opened inside the fingertip placement block can be correspondingly engaged with the user's fingers. During use, the fingers are passed through the side of the extension frame and engaged with the side of the fingertip placement block. The contact area is small and the hand-held operation is stable.

[0030] Compared with the prior art, the invention has the following beneficial effects: the handheld laser rangefinder capable of improving contact stability adopts a novel structural design, so that the device can be conveniently controlled by hand and pressed for distance measurement, and an infrared laser distance measuring device control angle adjustment structure is provided in the device, so the operation is very convenient;

[0031] 1. The finger of the user is clamped and limited to the side of the extension frame by the fingertip placement block, and the thumb of the user is correspondingly arranged on the side of the adjustment button. The adjustment button can be controlled to rotate or press and move by the thumb. The directional frame corresponds horizontally to the infrared laser ranging device. When the adjustment button is rotated, it drives the protective tube, the fixed rod and the pressing block to rotate synchronously. The outer part of the pressing block is an elliptical structure. During the rotation process, the lower end of the pressing block presses the ranging button on the surface of the infrared laser ranging device. After pressing the ranging, the fixed rod and the protective tube can be rotated and reset under the control of the elastic thrust of the vortex spring group. The directional frame corresponds vertically to the infrared laser ranging device. When the adjustment button is pressed and moved, it drives the protective tube, the fixed rod and the pressing block to move linearly synchronously, so that the pressing block presses the ranging button on the surface of the infrared laser ranging device. After pressing the ranging, the fixed rod and the protective tube are controlled to move linearly outward and reset under the elastic thrust of the reset spring. This part of the structure has strong hand-held stability, the contact area between the hand-held structure and the user's fingers is small, and the operation is more convenient;

[0032] 2. During use, according to the wall distribution at the construction measurement site, the corresponding angle between the handheld structure and the infrared laser ranging device can be controlled, the locking device can be loosened to control the directional frame to rotate sideways, and the locking device structure can be tightened after adjusting the rotation angle of the positioning frame. If the handheld structure corresponds horizontally to the infrared laser ranging device, it can directly measure the distance between the user and the wall, and it is convenient to place the ranging device when not in use. If the handheld structure corresponds vertically to the infrared laser ranging device, the infrared laser ranging device can be attached to the wall surface of any length, and it is convenient to control the flatness of its attachment to the wall surface, making the measurement more convenient and with higher measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the side structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the local structure of the directional frame of the present invention;

[0036] Figure 4 It is a schematic diagram of the cross-sectional structure of the front panel of the present invention from top view;

[0037] Figure 5 It is a schematic diagram of the side structure of the vortex spring assembly of the present invention;

[0038] Figure 6 It is a schematic diagram of the cross-sectional structure of the protection tube of the present invention viewed from above;

[0039] Figure 7 This is a schematic diagram of the rectangular sheet elevation structure of the present invention;

[0040] Figure 8 This is a schematic diagram of the vertical structure of the adjusting push rod of the present invention.

[0041] In the figure: 1. Infrared laser ranging equipment; 2. Fixed seat; 3. Left rotating drum; 4. Right rotating drum; 5. Adjusting push rod; 6. Orienting frame; 61. Bottom support frame; 62. Locking device; 63. Top support frame; 64. Limit mounting seat; 65. Transmission cylinder; 7. Front plate; 8. Inner limit column; 9. Fixed rod; 10. Press block; 11. Extension frame; 12. Fingertip placement block; 13. Outer limit column; 14. Protective tube; 15. Adjusting button; 16. Bearing; 17. Vortex spring group; 18. Linear slide plate; 19. Side slide groove; 20. Positioning plate; 21. Built-in round rod; 22. Rectangular sheet; 23. Linear slider; 24. Linear slide rail; 25. Fixed disc; 26. Reset spring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of 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 of 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.

[0043] See also Figure 1-8 The present invention provides a technical solution: a handheld laser rangefinder capable of improving contact stability, wherein the main detection structure of the handheld laser rangefinder is composed of an infrared laser rangefinder 1, and a fixing seat 2 is symmetrically installed on both sides of the outside of the infrared laser rangefinder 1, and a left rotating cylinder 3 and a right rotating cylinder 4 are rotatably connected inside the two sides of the fixing seat 2;

[0044] An adjusting push rod 5 is fixedly connected to the side of the left rotating drum 3;

[0045] An orientation frame 6 for controlling the hand-holding angle is fixedly arranged on the side of the right rotating drum 4, and a front plate 7 is fixedly installed at the middle position of the front side of the orientation frame 6;

[0046] A handheld laser rangefinder capable of improving contact stability, comprising:

[0047] An inner limit column 8 is rotatably connected to the interior of the front plate 7, and a fixing rod 9 is installed through the interior of the inner limit column 8, and a pressing block 10 for pressing and measuring distance is fixedly arranged on the side of the fixing rod 9;

[0048] An extension frame 11 is fixedly arranged on the outer side of the directional frame 6, and a fingertip placement block 12 is fixedly installed on the inner side of the extension frame 11, and an outer limit column 13 is rotatably connected to the inner middle position of the extension frame 11;

[0049] The protection tube 14 is arranged to penetrate the interior of the outer limiting column 13 , and an adjustment button 15 driven by a thumb to press and rotate is fixedly installed on the outer side of the protection tube 14 .

[0050] In this example, the lower end of the directional frame 6 forms a rotating structure with the fixed seat 2 through the right rotating cylinder 4, and the rotation range of the directional frame 6 is 0-90°, and the directional frame 6 also includes a bottom support frame 61 and a top support frame 63: the bottom support frame 61 is fixedly installed on the outside of the right rotating cylinder 4, and the side of the bottom support frame 61 is penetrated by a rotation lock 62 with a tightening function; the top support frame 63 is correspondingly connected to the side of the bottom support frame 61, a limited position mounting seat 64 is welded and fixed at the middle position of the outer side surface of the top support frame 63, and a transmission cylinder 65 is connected to the inside of the limited position mounting seat 64; the transmission cylinder 65 forms a rotating structure with the top support frame 63 through the limited position mounting seat 64, the top support frame 63 and the bottom support frame 61 form a telescopic structure, and the transmission cylinder 65 is fixedly connected to one end of the adjusting push rod 5, and the other end of the adjusting push rod 5 forms a rotating structure with the fixed seat 2 through the left rotating cylinder 3.

[0051] When the directional frame 6 and the infrared laser ranging device 1 are in a horizontal state, the user directly engages the finger inside the fingertip placement block 12, controls the laser ranging by adjusting the button 15, and conveniently places the ranging device when the device is not in use. The directional frame 6 can be controlled to rotate accordingly by loosening the locker 62, and the directional frame 6 is rotated upward by the right rotating drum 4 to be vertically distributed between the directional frame 6 and the infrared laser ranging device 1. At this time, the top support frame 63 moves upward at the upper end of the bottom support frame 61 (the top support frame 63 moves upward to control the pressing structure to move upward as a whole through the extension frame 11, and the distance between the pressing block 10 and the ranging button of the infrared laser ranging device 1 is adjusted, so as to Figure 1It can be seen that when the handheld structure corresponds to the infrared laser ranging device 1 horizontally, the pressing block 10 is correspondingly arranged at the left side of the right rotating cylinder 4. When the handheld structure is controlled to rotate upward, the handheld structure moves slightly upward, which can prevent the pressing block 10 from pressing on the surface of the ranging button of the infrared laser ranging device 1 during the rotation process, so that there is a certain distance between the pressing block 10 and the ranging button on the surface of the infrared laser ranging device 1, which is convenient for pressing and measuring the distance later). The two ends of the adjustment push rod 5 are respectively rotated through the left rotating cylinder 3 and the transmission cylinder 65. After the rotation adjustment, the control lock 62 is tightened, and the vertically distributed infrared laser ranging device 1 and The directional frame 6 can conveniently control the distance measuring instrument to fit the wall, especially some short-distance walls at corners. It is not convenient to directly hold the infrared laser distance measuring device 1 vertically on the short-distance wall surface. The infrared laser distance measuring device 1 can be stably and vertically fitted on the wall surface through a vertical handheld device, and the measurement level is high, thereby improving the measurement accuracy (and the user holds it on the outside of the extension frame 11 and the fingertip placement block 12, the contact area is small, and under the high temperature in summer, the influence of sweating is low, and the fingers passing through the lower end of the extension frame 11 are not easy to slide and fall, and the operation is convenient).

[0052] The inner limit column 8 and the outer limit column 13 form a linear control sliding and rotating transmission structure. The inner and outer sides of the inner limit column 8 are also provided with a bearing 16 and a linear slide 18: the bearing 16 is fixedly engaged inside the front plate 7, the inner limit column 8 is rotatably arranged inside the bearing 16, and a vortex spring group 17 is installed at the middle position of the outer side of the inner limit column 8; the linear slide 18 is inserted through the inner sides of the inner limit column 8, and the linear slide 18 is fixedly installed on the outer side of the fixed rod 9; the outer side of the fixed rod 9 is connected to the linear slide 1 8 and the inner limit column 8 form a linear sliding structure, and the outer side of the inner limit column 8 forms an elastic structure with the front plate 7 through the vortex spring group 17; a positioning plate 20 is fixedly installed at the inner middle position of the outer limit column 13, and the positioning plate 20 is set on the side of the protective tube 14 through the side slide groove 19, and the side slide groove 19 is opened on the side wall of the protective tube 14; the interior of the protective tube 14 is also provided with an internal round rod 21, a linear slide rail 24 and a fixed disc 25: the internal round rod 21, one end of which is fixedly installed in the side of the positioning disc 20 The inner round rod 21 is fixedly mounted at the other end of the inner round rod 21 with a rectangular piece 22; the linear guide rails 24 are symmetrically fixedly arranged on both sides of the inner part of the protection tube 14, and the outer part of the linear guide rails 24 is correspondingly mounted with linear sliders 23; the fixed disc 25 is fixedly mounted on the inner side wall of the protection tube 14, and the side of the fixed disc 25 is connected with a return spring 26; the rectangular piece 22, the inner round rod 21 and the positioning plate 20 are fixedly formed into an integrated structure, and both sides of the rectangular piece 22 are connected to the linear guide rails 24 through the linear sliders 23 to form left and right slides. The side of the rectangular sheet 22 is elastically connected to the fixed disc 25 through a return spring 26; the built-in round rod 21 is slidably arranged inside the fixed disc 25, and the side of the built-in round rod 21 and the fixed rod 9 form a telescopic structure, and the pressing block 10 fixed on the side of the fixed rod 9 is correspondingly arranged on the side of the ranging button of the infrared laser ranging device 1; the fingertip placement block 12 is symmetrically arranged in two groups on the inner side of the extension frame 11, and the groove structure opened inside the fingertip placement block 12 can be correspondingly engaged with the user's finger.

[0053] When the infrared laser distance measuring device 1 is controlled to correspond parallelly with the handheld structure, the user controls the adjustment button 15 to rotate by the thumb, and the adjustment button 15 drives the protection tube 14, the fixing rod 9 and the pressing block 10 to rotate synchronously, and the protection tube 14 controls the outer limit column 13 to rotate correspondingly inside the extension frame 11, and the fixing rod 9 controls the inner limit column 8 to rotate correspondingly inside the front plate 7. During the rotation process, the pressing block 10 presses down the distance measuring button on the surface of the infrared laser distance measuring device 1 to complete the distance measuring operation. After the measurement, the user separates and loosens the adjustment button 15 with the thumb, and the inner limit column 8 controls the fixing rod 9, the protection tube 14, the adjustment button 15 and the pressing block 10 to rotate synchronously in the reverse direction under the elastic thrust of the vortex spring group 17, so that they rotate to the initial position, which is convenient for pressing again for distance measurement;

[0054] When the infrared laser ranging device 1 is controlled to correspond vertically to the handheld structure, the user controls the adjusting button 15 to press the adjusting button 15 inwardly by the thumb to move linearly, and the adjusting button 15 drives the protective tube 14, the fixed rod 9 and the pressing block 10 to move downward synchronously, so that the pressing block 10 presses the ranging button on the surface of the infrared laser ranging device 1 downwardly to realize the ranging operation. During the movement of the transmission structure, the fixed rod 9 slides linearly through the inner limit column 8 through the linear slide plate 18, and the protective tube 14 slides correspondingly on the side of the fixed disc 25 through the side slide groove 19. At the same time, the spacing between the fixed disc 25 and the rectangular sheet 22 is reduced, and the two sides of the rectangular sheet 22 slide correspondingly on the side of the linear slide rail 24 through the linear slider 23. The reset spring 26 is compressed. After pressing, the user's thumb loosens and disengages from the adjusting button 15. Under the elastic thrust of the reset spring 26, the fixed rod 9, the protective tube 14, the adjusting button 15 and the pressing block 10 move synchronously outward and reset, which is convenient for pressing the ranging again.

[0055] Working principle: When using this device, according to Figure 1-8 The structure shown in the figure controls the corresponding angle between the infrared laser ranging device 1 and the handheld structure according to the distribution of the walls at the construction site. The directional frame 6 is controlled to rotate upward by the right rotating drum 4, and the left rotating drum 3 controls the adjusting push rod 5 to rotate sideways accordingly. At this time, the upper end of the adjusting push rod 5 controls the top supporting frame 63 to move upward, thereby increasing the corresponding length of the overall handheld structure. The vertically distributed infrared laser ranging device 1 is convenient for flatly fitting with the short-distance wall at the corner, thereby improving the distance measurement effect. At the same time, the adjusting button 15 is controlled to rotate or move in a straight line under different handheld states. Under the influence of the transmission structure, the pressing block 10 can be pressed correspondingly on the distance measurement button on the surface of the infrared laser ranging device 1 to complete the distance measurement operation, and the operation is flexible and convenient.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld laser rangefinder capable of improving contact stability, wherein the main detection structure of the handheld laser rangefinder is composed of an infrared laser rangefinder, and a fixing seat is symmetrically installed on both sides of the outside of the infrared laser rangefinder, and a left rotating cylinder and a right rotating cylinder are rotatably connected inside the two sides of the fixing seat respectively; An adjusting push rod is fixedly connected to the side of the left rotating drum; An directional frame for controlling the hand-holding angle is fixedly arranged on the side of the right rotating drum, and a front plate is fixedly installed at the middle position of the front side of the directional frame; It is characterized in that include: An inner limit column, which is rotatably connected to the inside of the front plate, and a fixing rod is installed through the inside of the inner limit column, and a pressing block with a pressing distance measurement function is fixedly arranged on the side of the fixing rod; An extension frame, which is fixedly arranged on the outer side of the directional frame, and a fingertip placement block is fixedly installed on the inner side of the extension frame, and an outer limit column is rotatably connected to the inner middle position of the extension frame; A protective tube is arranged to penetrate the interior of the outer limiting column, and an adjustment button driven by a thumb to press and rotate is fixedly installed on the outer side of the protective tube; The lower end of the directional frame forms a rotating structure with the fixed seat through the right rotating drum, and the rotation range of the directional frame is 0-90°, and the directional frame also includes a bottom support frame and a top support frame: A bottom support frame is fixedly mounted on the outside of the right rotating drum, and a locking device with a tightening function is rotatably provided through the side surface of the bottom support frame; A top support frame, which is correspondingly connected to the side of the bottom support frame, a limited position mounting seat is welded and fixed at the middle position of the outer side of the top support frame, and a transmission cylinder is connected inside the limited position mounting seat; The inner limit column and the outer limit column form a linear control sliding and rotation transmission structure, and the inner and outer sides of the inner limit column are also provided with bearings and a linear slide plate: A bearing is embedded and fixed inside the front plate, the inner limit column is rotatably arranged inside the bearing, and a vortex spring group is installed at the middle position outside the inner limit column; A linear slide plate is provided through and is engaged with both sides of the inner limit column, and the linear slide plate is fixedly installed on the outside of the fixing rod; A positioning plate is fixedly installed at the inner middle position of the outer limit column, and the positioning plate is arranged on the side of the protection tube through a side slide groove, and the side slide groove is opened on the side wall of the protection tube; The interior of the protective tube is also provided with a built-in round rod, a linear slide rail and a fixed disc: An internal round rod, one end of which is fixedly mounted at the middle position of the side of the positioning plate, and the other end of the internal round rod is fixedly mounted with a rectangular sheet; A linear slide rail is symmetrically fixed on both sides of the inner part of the protection tube, and a linear slider is correspondingly installed on the outer part of the linear slide rail; The fixed disc is fixedly mounted on the inner wall of the protection tube, and a return spring is connected to the side surface of the fixed disc.

2. A handheld laser rangefinder capable of improving contact stability according to claim 1, characterized in that: The transmission cylinder forms a rotating structure with the top support frame through a limit mounting seat, the top support frame and the bottom support frame form a telescopic structure, and the transmission cylinder is fixedly connected to one end of the adjusting push rod, and the other end of the adjusting push rod forms a rotating structure with the fixed seat through the left rotating cylinder.

3. The handheld laser rangefinder capable of improving contact stability according to claim 1, characterized in that: The outer side of the fixing rod forms a linear sliding structure with the inner limiting column through a linear sliding plate, and the outer side of the inner limiting column forms an elastic structure with the front plate through a vortex spring group.

4. The handheld laser rangefinder capable of improving contact stability according to claim 1, characterized in that: The rectangular sheet, the built-in round rod and the positioning plate are fixed into an integrated structure, and both sides of the rectangular sheet form a left-right sliding structure with the linear slide rail through linear sliders, while the side surface of the rectangular sheet forms an elastic connection structure with the fixed circular plate through a return spring.

5. A handheld laser rangefinder capable of improving contact stability according to claim 4, characterized in that: The built-in round rod is slidably arranged inside the fixed disc, and the side surface of the built-in round rod and the fixed rod form a telescopic structure. At the same time, the pressing block fixed on the side surface of the fixed rod is correspondingly arranged on the side surface of the ranging button of the infrared laser ranging device.

6. The handheld laser rangefinder capable of improving contact stability according to claim 1, characterized in that: The fingertip placement blocks are symmetrically arranged in two groups on the inner side of the extension frame, and the groove structure opened inside the fingertip placement blocks can be correspondingly engaged with the user's fingers.

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