Rotary window cover and laser marking instrument

Abstract

The utility model provides a rotary window cover and a laser line marking instrument, the rotary window cover is movably installed on a laser window of the laser line marking instrument, and an assembly strip is arranged on the inner side of the laser window. The rotary window cover comprises a cover body, glass, a first sealing gasket, a second sealing gasket, a bottom cover and collision beads, the cover body is movably installed on the laser window, the glass is installed in the cover body, the front end and the rear end of the glass are tightly attached to the first sealing gasket and the second sealing gasket respectively, and the bottom cover is connected with the cover body through screws; a first groove is formed in the end face of the rear end of the bottom cover, and a collision bead is arranged on the assembly strip and clamped into the first groove. A second groove and a third groove are formed in the bottom cover, the second groove is a concave groove, the third groove is a cutting type L-shaped groove, a protrusion is arranged on a groove opening of the second groove, the protrusion is elastic through the second groove and the third groove, and the protrusion is used for eliminating axial gaps. The rotating device is simple in structure and convenient for an operator to accurately rotate, and meanwhile, dust and water drops are effectively prevented from entering the shell to influence the service life.

Description

Technical Field

[0001] The utility model relates to the field of measuring instruments, in particular to a rotating window cover and a laser marking instrument. Background Art

[0002] Laser marking instrument, also known as laser level, is mainly used for positioning and layout in construction and decoration projects. Laser marking instrument emits laser beam, passes the laser beam through the prism light guide system to form a laser surface to project horizontal and plumb laser lines to achieve the purpose of measurement.

[0003] The window cover of the laser marking instrument is equipped with glass, which is composed of four pieces. A light-proof or light-weakly light-transmitting bonding area is formed at the bonding point of the glass. When the laser penetrates the glass and is projected onto the construction surface, the blocking of the bonding area forms a breakpoint of the laser line, causing a benchmark blind area in the construction, affecting the construction efficiency and project quality. Therefore, the design of rotating window covers has gradually appeared on the market. However, it is difficult to grasp the angle of the window cover when rotating, and due to the rotating design, there may be a gap between the window cover and the shell, and water and dust enter the laser marking instrument, affecting its service life. Utility Model Content

[0004] In order to solve the above problems and other problems, the utility model is implemented through the following technical solutions: a rotating window cover, including a cover body, which is located outside the shell of a laser marking instrument and movably installed on the front end face of the laser window of the laser marking instrument, and the edge of the rear end face of the cover body is evenly distributed with first grooves; a bottom cover, which is located inside the shell, fits with the rear end face of the laser window, and is connected to the cover body; a bumper, which is embedded and installed at the edge of the front end face of the laser window, and the bumper is stuck in the first groove.

[0005] In one embodiment, a convex ring is provided on the rear end surface of the bottom cover, and the convex ring is inserted into the laser window and fits closely with the front end of the bottom cover.

[0006] In one embodiment, the edge of the bottom cover is provided with a second groove and a third groove, the second groove is provided at the front end surface of the bottom cover, and the third groove extends from the inner side of the second groove to the edge, cutting off one end notch of the second groove.

[0007] In one embodiment, a protrusion is provided at the notch of the second groove, and the protrusion abuts against the rear end surface of the laser window.

[0008] In one embodiment, the ball contact includes a mounting seat, a spring and a ball. The spring and the ball are placed in the mounting seat, and the lower end of the ball is against the spring.

[0009] In one embodiment, the device comprises glass, a first sealing gasket and a second sealing gasket. The glass is installed in the cover body, and the first sealing gasket and the second sealing gasket are respectively installed at the front and rear ends of the glass to be in close contact with the glass.

[0010] The utility model also provides a laser marking instrument, comprising any one of the above-mentioned rotating window covers.

[0011] In one embodiment, a mounting strip is provided on the inner side of the laser window, a mounting groove is provided on the mounting strip, and the bumper is installed in the mounting groove.

[0012] In one embodiment, the front end surface of the assembly strip fits with the rear end surface of the cover body, and the protrusion of the bottom cover abuts against the rear end surface of the assembly strip.

[0013] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model proposes a rotating window cover with a simple structure, and can rotate at a certain angle relative to the shell, which is convenient for the operator to change the breakpoint area; the rotation angle is limited by the bead falling into the first groove multiple times, and the rotation process has a damping feeling, which is convenient for the operator to rotate accurately; the axial gap is eliminated by setting a protrusion to press against the shell, which effectively prevents dust and water droplets from entering the laser marking instrument and affecting the working life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The display is a schematic diagram of the structure of the laser marking instrument of the utility model;

[0015] Figure 2 Shown is a schematic diagram of the cover structure of the utility model;

[0016] Figure 3 Shown is a schematic diagram of the bottom cover structure of the utility model;

[0017] Figure 4 Shown is a schematic diagram of the bead-touching structure of the utility model.

[0018] 1-laser marking instrument body; 11-shell; 12-laser module; 13-laser emitting end; 14-laser window; 141-assembly strip; 2-rotating window cover; 21-cover body; 211-opening; 212-convex ring; 213-limiting ring; 214-first groove; 22-glass; 23-first sealing gasket; 24-second sealing gasket; 25-bottom cover; 251-second groove; 252-third groove; 253-protrusion; 26-screw; 27-mounting groove; 28-bump; 281-mounting seat; 282-spring; 283-ball. DETAILED DESCRIPTION

[0019] See also Figures 1 to 4The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0020] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those skilled in the art, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical contents disclosed by the utility model. At the same time, the terms such as "left", "right", "up", "down", and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of the relative relationship, without substantially changing the technical content, should also be regarded as the scope of the implementation of the utility model.

[0021] In the present invention, for the sake of clear description, the following explanation is made: the observer faces the attached Figure 1 The above description is only for the convenience of describing the present invention clearly, and does not indicate or imply that the structure or parts referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0022] like Figure 1 As shown, the laser marking instrument is mainly used for positioning and setting out in construction and decoration projects, including a laser marking instrument body 1 and a rotating window cover 2. The rotating window cover 2 is movably installed on the laser marking instrument body 1. The breakpoint area can be changed by rotating the rotating window cover 2, which is convenient for workers to mark during construction.

[0023] The laser marking instrument body 1 includes a shell 11, a laser module 12, a laser emitting end 13 and a laser window 14. The laser module 12 is installed in the shell 11. The shell 11 and the rotating window cover 2 constitute a closed space for protecting the laser module 12; the laser module 12 has at least two laser emitting ends 13, the axes of the laser emitting ends 13 are perpendicular to each other, and lasers are emitted from the laser emitting ends 13; a laser window 14 is opened on the shell 11, and the laser window 14 corresponds to the laser emitting end 13. The laser emitting end 13 extends out from the laser window 14, and the rotating window cover 2 is movably installed at the laser window 14 to protect the laser emitting end 13 and adjust the rotation angle.

[0024] An assembly strip 141 is disposed inside the laser window 14 . The assembly strip 141 is a recessed assembly strip. The assembly strip 141 facilitates the installation of the rotating window cover 2 on the laser window 14 .

[0025] The rotating window cover 2 includes a cover body 21, a glass 22, a first sealing gasket 23, a second sealing gasket 24, a bottom cover 25, a screw 26, a mounting groove 27 and a bumper 28. The cover body 21 is located outside the housing 11 and is movably mounted on the laser window 14. The rear end face of the cover body 21 abuts against the assembly strip 141 to protect the laser emitting end 13 and prevent dust and water droplets from affecting the operation of the laser emitting end 13. The glass 22 is installed in the cover body 21 and can rotate with the cover body 21. The first sealing gasket 23 and the second sealing gasket 24 are respectively installed at the front and rear ends of the glass 22. The second sealing gasket 24, the first sealing gasket 23 and the second sealing gasket 24 are in close contact with the glass 22, so that the glass 22 is fixed in the cover body 21, and dust and water droplets are prevented from entering through the gap between the glass 22 and the cover body 21; the bottom cover 25 is located inside the shell, and fits with the rear end surface of the assembly strip 141, and the cover body 21 and the bottom cover 26 are connected and fixed by the screws 26; the assembly strip 141 is provided with the mounting grooves 27, and the mounting grooves 27 are evenly distributed at the edges, and the bump beads 27 are installed in the mounting grooves 15, and the bump beads 27 are against the window frame 25.

[0026] Please combine Figure 1 and Figure 2 The side walls around the cover body 21 are provided with openings 211, and the openings 211 are used to display the glass 22. The light beam emitted by the laser emitting end 13 is emitted through the glass 22; the rear end face of the cover body 21 is provided with a convex ring 212, and the convex ring 212 is placed in the laser window 14 and fits with the bottom cover 26. A limiting ring 213 is formed between the convex ring 212 and the rear end face, and the limiting ring 213 fits with the assembly strip 141; the first grooves 214 are provided at the edge of the limiting ring 213, and the first grooves 214 are evenly distributed at the edge. The position distribution of the first grooves 214 is denser than that of the mounting grooves 27, and the number is larger. The bumping beads 28 are inserted into the first grooves 214 for limiting. When the rotating window cover 2 is rotated, the bumping beads 28 fall into the first grooves 214 in sequence, and the rotation angle of the rotating window cover 2 is limited after falling into the first grooves 214.

[0027] Please combine Figure 1 and Figure 3The edge of the bottom cover 25 is provided with a second groove 251 and a third groove 252, wherein the second groove 252 is a groove and is provided on the front end surface of the bottom cover 25; the third groove 252 is an "L"-shaped groove, formed by connecting a long groove and a short groove, and the third groove 252 is formed by cutting the bottom cover 25, wherein the long groove is connected to the second groove 251 and is located on the inner side of the second groove 251, and the short groove is connected to the long groove and extends to the edge of the bottom cover 25, cutting off one end notch of the second groove 251, so that the part where the second groove 251 is located is suspended; a protrusion 253 is provided at the notch of the second groove 251, and the protrusion 253 is made elastic by the second groove 251 and the third groove 252, and the protrusion 253 abuts against the rear end surface of the assembly strip 141, and provides friction resistance with rotation, so as to eliminate the axial clearance when the rotating window cover 2 is installed on the housing 11.

[0028] Specifically, the adjacent second grooves 261 and the adjacent third grooves 262 are symmetrically arranged.

[0029] like Figure 4 As shown, the ball 28 includes a mounting seat 281, a spring 282 and a ball 283. The mounting seat 281 is a hollow structure with a narrow opening. The spring 282 and the ball 283 are placed in the mounting seat 281. The lower end of the ball 283 abuts against the spring 282, and part of it is exposed from the opening of the mounting seat 281. The narrow opening prevents the ball 283 from escaping from the mounting seat. When the rotating window cover 2 is rotated, the ball 283 compresses the spring 282, follows the rotating window cover 2 to rotate and escape from the original first groove 214. When rotating to the next first groove 214, the spring 282 is restored, and the ball 283 is stuck in the first groove 214. The operator feels damping when rotating the rotating window cover 2. At the same time, the position where the ball 28 is stuck when rotating is consistent with the rotation angle, and the operator can know the rotation angle of the rotating window cover 2.

[0030] In summary, the utility model proposes a rotating window cover with a simple structure, and can be rotated at a certain angle relative to the shell, so that the operator can change the breakpoint area easily; the rotation angle is limited by the bead falling into the first groove multiple times, and the rotation process has a damping feeling, so that the operator can rotate accurately; the axial gap is eliminated by setting a protrusion to press against the shell, which effectively prevents dust and water droplets from entering the laser marking instrument and affecting the working life.

[0031] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A rotating window cover, characterized in that: include: A cover body is located outside the housing of the laser marking instrument and is movably mounted on the front end surface of the laser window of the laser marking instrument, and the edge of the rear end surface of the cover body is evenly distributed with first grooves; A bottom cover, located inside the shell, fitted with the rear end surface of the laser window, and connected to the cover body; A bumper is embedded and installed at the edge of the front end surface of the laser window, and the bumper is stuck in the first groove.

2. A rotating window cover according to claim 1, characterized in that: A convex ring is provided on the rear end surface of the bottom cover, and the convex ring is placed in the laser window and fits with the front end of the bottom cover.

3. A rotating window cover according to claim 1, characterized in that: The edge of the bottom cover is provided with a second groove and a third groove, wherein the second groove is provided at the front end surface of the bottom cover, and the third groove extends from the inner side of the second groove to the edge, cutting off a notch at one end of the second groove.

4. A rotating window cover according to claim 3, characterized in that: A protrusion is provided at the notch of the second groove, and the protrusion abuts against the rear end surface of the laser window.

5. A rotating window cover according to claim 1, characterized in that: The ball bumper comprises a mounting seat, a spring and a ball. The spring and the ball are placed in the mounting seat, and the lower end of the ball is against the spring.

6. A rotating window cover according to claim 1, characterized in that: It also includes glass, a first sealing gasket and a second sealing gasket. The glass is installed in the cover body, and the first sealing gasket and the second sealing gasket are respectively installed in the front and rear ends of the glass and are closely attached to the glass.

7. Laser marking instrument, characterized in that: It comprises a rotating window cover as described in any one of claims 1-6.

8. The laser marking instrument according to claim 7, characterized in that: An assembly strip is provided on the inner side of the laser window, a mounting groove is provided on the assembly strip, and the bumper is installed in the mounting groove.

9. The laser marking instrument according to claim 8, characterized in that: The front end surface of the assembly strip is fitted with the rear end surface of the cover body, and the protrusion of the bottom cover abuts against the rear end surface of the assembly strip.

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