Laser precise curtain size measuring instrument

Abstract

The utility model discloses a laser accurate curtain size measuring instrument, which relates to the technical field of household measuring equipment, and comprises a laser measuring equipment main body, the front end of the laser measuring equipment main body is provided with a front cavity, and the outer wall of the front end of the laser measuring equipment main body is rotatably connected with a protection assembly. The protection assembly comprises a protection cover which is rotatably connected to the outer wall of the front end of the laser measurement equipment body, and a rotating shaft of the protection cover extends into the front cavity. According to the utility model, the shield flat angle is turned firstly, the first gear is driven to rotate, the third gear drives the insertion rod to rotate through meshing transmission of the gears, the insertion rod extrudes the strip-shaped frame and the sliding rod to slide, the sliding rod enables the telescopic cover to extend outwards through the connecting rod and the lower bracket, the port of the laser emission module is protected, and the influence of an external light source is reduced. And when the sliding rod slides, the limiting block extrudes the spring to store energy, and the key is stably protected through matching and fixing of the shield clamping block and the equipment main body clamping groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of home measuring equipment, concretely to a laser precision curtain size measuring instrument. BACKGROUND

[0002] The first laser was born in the last century, and with the continuous development of laser ranging technology, the price of laser range finder is gradually reduced, its application range is continuously expanded, laser range finder calculates distance based on measuring the time of laser from emission to reflection back from the target, has the advantages of high precision, fast speed, day and night operation, etc., is widely used in military and industrial fields, and also has related applications in daily life, such as measuring the size of house decoration, measuring the size of furniture, measuring distance for outdoor sports enthusiasts, etc., and has developed various types such as handheld, telescope, cloud service, etc.

[0003] Nowadays, laser measuring instrument plays an important role in measuring size before curtain installation, and the traditional tape measure is prone to error when measuring window hole size, and it is inconvenient to operate on high and wide window holes, laser measuring instrument mainly consists of laser emission, receiving, signal processing, display and power module, when measuring, align the window hole edge and press the button, the emission module emits laser beam, the receiving module receives reflected light, the signal processing unit calculates distance, the result is displayed on the display module, and the power supply is powered by a single person, which provides a basis for determining the size of the curtain, so that the curtain is adapted to the window hole.

[0004] However, the above-mentioned device still has some deficiencies, the operation button is exposed, and the device is small and often placed in the pocket, toolbox or bag, which is easy to be squeezed and mispressed, wastes power and affects the stability during use, and the laser emission module has signal interference problem in bright environment, which leads to measurement data deviation and affects the measurement effect. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a laser precision curtain size measuring instrument to solve the technical problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a laser precision curtain size measuring instrument, comprising a laser measuring equipment main body, a front cavity is formed in the front end of the laser measuring equipment main body, and a protection assembly is rotatably connected to the outer wall of the front end of the laser measuring equipment main body.

[0007] The protection assembly comprises a shield rotatably connected to the outer wall of the front end of the main body of the laser measurement device, and the rotation axis of the shield extends into the front cavity, the center of the rotation axis of the shield is fixedly connected with a first gear in the front cavity, the inner wall of the front cavity is rotatably connected with a second gear below the first gear, and the first gear and the second gear are meshed, the inner wall of the front cavity is rotatably connected with a third gear below the second gear, and the outer wall of one side of the two groups of third gears close to each other is fixedly connected with a plug rod, the inner wall of both sides of the front cavity is slidably connected with a slide rod, the outer wall of one end of the slide rod is fixedly connected with a strip-shaped frame, the outer wall of one side of the two groups of slide rods close to each other is fixedly connected with a connecting rod, the lower surface of the connecting rod is fixedly connected with a lower support at the middle position, and the middle position of the lower support is fixedly connected with a telescopic cover.

[0008] By adopting the above technical scheme, the shield is first turned to a flat angle, the first gear is driven to rotate, the third gear is driven to rotate through gear meshing transmission, the plug rod is extruded to slide the strip-shaped frame and the slide rod, the slide rod is extended through the connecting rod and the lower support, the laser emission module port is protected, and the influence of external light sources is reduced. When the slide rod slides, the limiting block extrudes the spring to store energy, the shield clamping block is matched with the clamping groove of the device main body to be fixed, and the keys are stably protected.

[0009] Further, the optical filter is embeddedly installed at the middle position of the shield, the clamping block is fixed at the middle position of the inner wall of one side of the shield away from the first gear, and the clamping groove is formed at the position where the outer wall of the laser measurement device main body is in contact with the clamping block.

[0010] By adopting the above technical scheme, the optical filter can selectively allow a specific wavelength of laser to pass through, block other wavelengths of light in the environment, reduce the interference of external light, enhance the measurement accuracy, and also protect the laser emission module, so that the working state of the device is more stable, and the shield can be locked with the clamping groove.

[0011] Further, the plug rod is located at the eccentric position of the surface of the third gear, and the strip-shaped frame is sleeved on the outer wall of the plug rod, and the inner diameter of the plug rod matches the plug rod.

[0012] By adopting the above technical scheme, the third gear is rotated to drive the plug rod, and then the strip-shaped frame and the slide rod are reciprocally moved left and right, so that the telescopic cover is automatically extended and the laser emission module is protected.

[0013] Further, the inner wall of the front cavity is fixedly connected with two groups of mounting frames, and the slide rod slides through the mounting frames.

[0014] By adopting the above technical scheme, the two groups of mounting frames can provide mounting support for the slide rod, and at the same time ensure that the slide rod can slide left and right.

[0015] Further, the outer wall of the slide rod is fixedly connected with a limiting block at one end away from the strip-shaped frame, and a spring is sleeved on the outer wall of the slide rod, and the two ends of the spring are in contact with the outer walls of the limiting block and the mounting frame that are close to each other.

[0016] By adopting the above technical scheme, the spring can accumulate energy by being extruded by the limiting block when the slide rod moves, and can provide auxiliary power for the reset of the slide rod.

[0017] Further, the cross section of the lower support is in the shape of the letter 'L', one end of the telescopic cover penetrates the front cavity and extends to the front end outer wall of the laser measuring device body, and two groups of symmetrical fan-shaped through grooves are formed in the outer wall of the laser measuring device body at the position where the outer wall is in contact with the telescopic cover.

[0018] By adopting the above technical scheme, the telescopic cover can locally protect the laser emitting module from the top and bottom directions, and prevent external light sources from interfering with the measurement.

[0019] Further, the inner wall of the front cavity is fixedly connected with a laser emitting module, the laser emitting module is connected with the control module through wires, and the axis of the laser emitting module coincides with that of the telescopic cover.

[0020] By adopting the above technical scheme, the telescopic cover surrounds the laser emitting module, and the optical elements on the laser emitting module can be protected during use, and the entry of construction debris is prevented to a certain extent.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] The utility model discloses a first gear is rotated by first rotating the protective cover flat angle, and third gear drives the plug-in rod rotation through gear meshing transmission, and the plug-in rod extrusion strip-shaped frame and slide rod slide, and the telescopic cover is extended out through the linkage and lower support of slide rod, and the port of the laser emitting module is protected, and the influence of external light source is reduced. When the slide rod slides, the limiting block extrudes the spring to store energy, and the protective cover clamping block is fixed in the equipment body clamping groove through cooperation, and the key is stably protected. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the front view of the utility model;

[0024] Figure 2 It is the equipment cover unfolding detail drawing of the utility model;

[0025] Figure 3 It is the sectional view of the protective assembly of the utility model;

[0026] Figure 4 It is the bottom view of the utility model;

[0027] Figure 5 It is the Figure 2Enlarged detail of point A in the middle;

[0028] Figure 6 For the utility model Figure 3 Enlarged detail of point B in the middle.

[0029] In the figure: 1. Laser measuring device body; 101. Pre-chamber; 11. Laser emission module; 2. Protective assembly; 21. Protective cover; 211. Optical filter; 212. Block; 22. First gear; 23. Second gear; 24. Third gear; 241. Insert rod; 25. Slide rod; 251. Bar frame; 252. Limit block; 26. Mounting frame; 27. Spring; 28. Connecting rod; 281. Lower bracket; 29. ​​Telescopic cover. DETAILED DESCRIPTION

[0030] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] The following describes an embodiment of the present invention based on its overall structure.

[0032] A laser precision curtain size measuring instrument, such as Figure 1 - Figure 6 As shown, it includes a laser measuring device body 1, a front cavity 101 is opened at the front end of the laser measuring device body 1, and a protective component 2 is rotatably connected to the outer wall of the front end of the laser measuring device body 1;

[0033] The protective assembly 2 includes a shield 21 rotatably connected to the outer wall of the front end of the laser measuring equipment body 1, and the rotation axis of the shield 21 extends to the inside of the front chamber 101. The center of the rotation axis of the shield 21 is located inside the front chamber 101 and is symmetrically fixedly connected to the first gear 22. The inner wall of the front chamber 101 is located below the first gear 22 and is rotatably connected to the second gear 23, and the first gear 22 and the second gear 23 are engaged. The inner wall of the front chamber 101 is located below the second gear 23 and is rotatably connected to the third gear 24. The outer walls of the two groups of third gears 24 on the side close to each other are fixedly connected to the insertion rod 241. The inner walls of both sides of the front chamber 101 are slidably installed with sliding rods 25. The outer wall of one end of the sliding rod 25 is fixedly connected to the strip frame 251. The outer walls of the side close to each other of the two groups of sliding rods 25 are fixedly connected to the connecting rod 28. The middle position of the lower surface of the connecting rod 28 is fixedly connected to the lower bracket 281, and the middle position of the lower bracket 281 is fixedly installed with a telescopic cover 29.

[0034] The utility model first flips the shield 21 at a flat angle, and the shield 21 drives the first gear 22 to rotate while flipping, and the first gear 22 meshes with the second gear 23, and the second gear 23 meshes again to drive the third gear 24 to rotate. The third gear 24 rotates and drives the insertion rod 241 to rotate. The insertion rod 241 squeezes and drives the bar frame 251 and the slide bar 25 to slide while rotating. When the slide bar 25 slides, the telescopic cover 29 is driven outward through the connecting rod 28 and the lower bracket 281 to provide local protection for the port of the laser emission module 11 and reduce the influence of external light sources. When the slide bar 25 slides, the limit block 252 squeezes the spring 27 to accumulate power for the slide bar 25 and the telescopic cover 29 to retract and reset. The shield 21 uses the card block 212 to cooperate with the card slot opened at the corresponding position of the outer wall of the laser measuring equipment body 1, thereby quickly fixing the shield 21 and using the shield 21 to provide stable protection for the buttons of the equipment.

[0035] See also Figure 1 - Figure 4 An optical filter 211 is embedded in the middle position of the shield 21, and a block 212 is fixed to the middle position of the inner wall of the shield 21 away from the first gear 22. A slot is provided at the contact position between the outer wall of the laser measuring device body 1 and the block 212. By setting the above structure, the optical filter 211 can selectively allow specific wavelengths of laser light to pass through, block other wavelengths of light in the environment, reduce interference from external light, enhance measurement accuracy, protect the laser emission module 11, and ensure that the working state of the device is more stable. The block 212 can cooperate with the slot to lock the shield 21.

[0036] See also Figure 3 - Figure 6 The insertion rod 241 is located at an eccentric position on the surface of the third gear 24, and the strip frame 251 is sleeved on the outer wall of the insertion rod 241. The inner diameter of the insertion rod 241 matches the insertion rod 241. By setting the above structure, the utility model uses the third gear 24 to rotate to drive the insertion rod 241 and then drive the strip frame 251 and the sliding rod 25 to move back and forth left and right, thereby realizing the linkage to push the telescopic cover 29 to automatically extend, thereby protecting the laser emission module 11.

[0037] See also Figure 3 - Figure 6 Two sets of mounting brackets 26 are symmetrically fixedly connected to the inner wall of the front cavity 101, and the slide rod 25 slides through the mounting brackets 26. By setting the above structure, the utility model can provide installation support for the slide rod 25, while ensuring that the slide rod 25 can slide left and right.

[0038] See also Figure 3 - Figure 6The utility model discloses a limit block 252 is fixedly connected to the outer wall of one end of slide bar 25 away from the strip frame 251, the outer wall of slide bar 25 is equipped with spring 27, and the both ends of spring 27 are in contact with the outer wall of limit block 252 and mounting bracket 26 respectively, and the utility model discloses a spring 27 can be extruded by limit block 252 when slide bar 25 moves and can accumulate energy, can provide auxiliary power for the reset of slide bar 25.

[0039] Please refer to Figure 1 - Figure 5 The section shape of lower support 281 is "L" shape, one end of telescopic cover 29 penetrates front cavity 101 and extends to the front end outer wall of laser measuring equipment body 1, and two groups of symmetrical fan-shaped through slots are formed in the position where the outer wall of laser measuring equipment body 1 is in contact with telescopic cover 29, and the utility model discloses a telescopic cover 29 can partially protect laser emission module 11 from the upper and lower directions, and external light source interference is prevented.

[0040] Please refer to Figure 1 - Figure 5 Laser emission module 11 is fixedly connected to the inner wall of front cavity 101, laser emission module 11 is connected with control module through wire, and the axis of laser emission module 11 coincides with telescopic cover 29, and the utility model discloses a telescopic cover 29 surrounds laser emission module 11, and the optical element on laser emission module 11 can be protected when being used, and construction debris is prevented to a certain extent.

[0041] The working principle of the utility model is as follows: when being used, first, the shield 21 is turned over by an angle, the shield 21 is turned over while driving the first gear 22 to rotate, the first gear 22 is engaged with the second gear 23, the second gear 23 is engaged to drive the third gear 24 to rotate, the third gear 24 is rotated while driving the plug rod 241 to rotate, the plug rod 241 is extruded while sliding the strip frame 251 and the slide bar 25, the slide bar 25 is slid while driving the telescopic cover 29 to move out and extend through the connecting rod 28 and the lower support 281, the port of the laser emission module 11 is partially protected, and the influence of external light source is reduced.

[0042] While the slide bar 25 is sliding, the limit block 252 extrudes the spring 27, and the slide bar 25 and the telescopic cover 29 are reset and accumulate power, the shield 21 is quickly fixed by cooperating the clamping block 212 with the clamping groove formed in the corresponding position of the outer wall of the laser measuring equipment body 1, and the keys of the device are stably protected by the shield 21.

[0043] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A laser precision curtain size measuring instrument comprising a laser measuring device body (1), characterized in that: The front end of the laser measuring device body (1) is provided with a front cavity (101), and the outer wall of the front end of the laser measuring device body (1) is rotatably connected with a protection assembly (2); The protection assembly (2) comprises a shield (21) rotatably connected to the outer wall of the front end of the laser measuring device body (1), and the rotation axis of the shield (21) extends into the inside of the front cavity (101), and the center of the rotation axis of the shield (21) is fixedly connected with a first gear (22) in the inside of the front cavity (101) in a symmetrical manner, the inner wall of the front cavity (101) is rotatably connected with a second gear (23) below the first gear (22), and the first gear (22) and the second gear (23) are engaged, and the inner wall of the front cavity (101) is rotatably connected with a third gear (24) below the second gear (23), and the outer wall of one side of the two groups of third gears (24) close to each other is fixedly connected with a plug rod (241), the inner wall of both sides of the front cavity (101) is slidably connected with a slide rod (25), the outer wall of one end of the slide rod (25) is fixedly connected with a strip-shaped frame (251), the outer wall of one side of the two groups of slide rods (25) close to each other is fixedly connected with a connecting rod (28), and the lower surface of the connecting rod (28) is fixedly connected with a lower support (281) at the middle position, and the middle position of the lower support (281) is fixedly connected with an extension cover (29).

2. The laser precision window treatment size measuring instrument of claim 1, wherein: The middle position of the shield (21) is embeddedly connected with an optical filter (211), the inner wall of one side of the shield (21) away from the first gear (22) is fixedly connected with a clamping block (212), and the outer wall of the laser measuring device body (1) is provided with a clamping groove at the position where the clamping block (212) is contacted.

3. The laser precision window treatment size measuring instrument of claim 1, wherein: The plug rod (241) is located at the eccentric position of the surface of the third gear (24), and the strip-shaped frame (251) is sleeved on the outer wall of the plug rod (241), and the inner diameter of the plug rod (241) matches the plug rod (241).

4. The laser precision window treatment size measuring instrument of claim 1, wherein: The inner wall of the front cavity (101) is fixedly connected with two groups of mounting frames (26) in a symmetrical manner, and the slide rod (25) slidably penetrates the mounting frame (26).

5. The laser precision window treatment size measuring instrument of claim 1, wherein: The outer wall of one end of the slide rod (25) away from the strip-shaped frame (251) is fixedly connected with a limiting block (252), the outer wall of the slide rod (25) is sleeved with a spring (27), and the two ends of the spring (27) are respectively contacted with the outer walls of the limiting block (252) and the mounting frame (26) close to each other.

6. The laser precision window treatment size measuring instrument of claim 1, wherein: The cross section of the lower support (281) is in the shape of letter "L", one end of the extension cover (29) penetrates the front cavity (101) and extends to the outer wall of the front end of the laser measuring device body (1), and the outer wall of the laser measuring device body (1) is provided with two groups of symmetrical fan-shaped through grooves at the position where the extension cover (29) is contacted.

7. The laser precision window treatment size measuring instrument of claim 1, wherein: The inner wall of the front cavity (101) is fixedly connected with a laser emitting module (11), the laser emitting module (11) is connected with a control module through wires, and the axis of the laser emitting module (11) coincides with the axis of the extension cover (29).

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