Laser head protection device for laser level meter

Abstract

The utility model discloses a laser head protection device for a laser level meter, which comprises a support frame made of metal and an elastic protection pad which covers the top of the support frame and is made of rubber materials, an annular protection pad A and an annular protection pad B are arranged in the support frame, and a glass shield is clamped between the annular protection pad A and the annular protection pad B; according to the utility model, the elastic protective pad is covered on the top of the metal support frame of which the four surfaces are opened, so that the shock resistance of the whole structure of the laser level meter is enhanced, external force is prevented from being directly transmitted to a laser head, and the laser level meter is prevented from being damaged. The annular protection pad A and the annular protection pad B are arranged in the supporting frame, and the glass shield is clamped between the annular protection pad A and the annular protection pad B, so that the glass shield is effectively fixed and supported, the glass shield is prevented from being damaged due to vibration or external force, and the use reliability and precision of the laser level meter in a complex working environment are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of laser level accessories, in particular to a laser head protection device for a laser level. Background Art

[0002] Laser levels, also known as laser line projectors or laser marking instruments, are widely used in fields such as construction, interior decoration, and surveying and mapping. They can achieve precise positioning and marking by emitting laser lines. However, the working environment of laser levels is usually relatively harsh, especially on construction sites and outdoor construction. Frequent handling, operation, and inevitable collisions cause the equipment to withstand large external impacts. In order to protect the core component of the laser line projector, the laser light-emitting tube, and prevent it from being damaged due to accidental collisions or falls, existing laser line projectors are usually designed with a metal protective frame with four window-frame-like sides at the laser light output. This frame is not only used to support the external structure, but also has a glass cover installed inside it to further protect the laser emitting part.

[0003] Although the metal protective frame offers high impact resistance, the inherent rigidity of the metal will transfer the external impact force directly to the glass cover when it is hit or dropped. Because glass is relatively fragile, it is prone to shattering or cracking when subjected to large concentrated stresses. A broken glass cover not only directly affects the performance of the laser level but can also cause the laser light tube to deflect or scatter, seriously affecting positioning and measurement accuracy, and even causing the device to malfunction.

[0004] Therefore, the existing laser head protection device needs to be further optimized and improved. Utility Model Content

[0005] The purpose of the utility model is to provide a laser head protection device for a laser level instrument, which can provide firm protection and slow down the transmission of collision force.

[0006] In order to achieve the above object, the present invention adopts the following scheme: a laser head protection device for a laser level, comprising:

[0007] A supporting frame made of metal, with openings on four sides;

[0008] an elastic protective pad, which is made of rubber material and covers the top of the support frame;

[0009] An annular protective pad A and an annular protective pad B are provided inside the support frame, wherein the annular protective pad A is provided at the top of the support frame and is closely connected to the inner side of the top of the support frame, and the annular protective pad B is provided around the inner wall of the bottom of the support frame;

[0010] The glass shield is held between annular protective pads A and B. Its perimeter corresponds to the four openings of the support frame, with annular protective pads A and B located at the top and bottom of the support frame, respectively, providing all-around support for the glass shield. This design not only prevents the glass shield from direct contact with the metal frame but also ensures its stability, reduces the direct impact of external impact forces, and prevents breakage or cracking of the glass shield.

[0011] Screw holes are respectively provided at the bottom edges of the four openings of the support frame, and the screw holes are used to connect the laser level housing by screwing screws.

[0012] An elastic protective pad is added to the top of the metal frame. The elasticity and cushioning properties of the rubber material effectively reduce the transmission of external impact forces, preventing the metal frame from transmitting force directly to the glass cover during a collision. The addition of rubber material enhances the device's impact resistance and provides an additional layer of protection.

[0013] As a further feature of the present invention, the support frame includes multiple downwardly projecting positioning posts on its bottom surface, which are capable of being inserted into pre-set positioning holes in the laser level housing. These positioning posts mate with the pre-set positioning holes in the laser level housing, ensuring precise installation of the protective device, preventing unstable installation or displacement, and enhancing the device's shock and vibration resistance.

[0014] As a preferred embodiment of this invention, a protruding fixing block is provided on the top of the support frame, and an insertion groove is provided on the bottom surface of the elastic protective pad. When the elastic protective pad is attached to the top surface of the support frame, the fixing block interference fits into the insertion groove. This design ensures that the elastic protective pad is firmly fixed to the support frame and increases the overall structural strength of the device through the interference fit. This connection method not only ensures the stability of the device, but also provides a certain degree of cushioning against external impacts.

[0015] As a preferred embodiment of the present invention, an annular groove A is provided around the bottom of the annular protective pad A, and an annular groove B is provided around the top of the annular protective pad B. The top periphery of the glass shield is inserted into the annular groove A, and the bottom periphery of the glass shield is inserted into the annular groove B. The annular grooves A and B secure the upper and lower peripheries of the glass shield, not only increasing the stability of the glass shield and preventing it from shifting when subjected to vibration or impact, but also reducing local stress concentration through annular fixation, further reducing the risk of glass breakage.

[0016] As a preferred embodiment of the present invention, a concave connection groove is provided in the center of the top surface of the support frame, and an upwardly protruding connection boss is provided on the top of the annular protective pad A, which fits into the connection groove. This design not only further improves the positioning accuracy of the annular protective pad, preventing displacement due to vibration or impact, but also enhances the structural stability of the entire device.

[0017] As a further solution of the present invention, a buffer airbag is provided on the top of the elastic protective pad, which further enhances the buffering effect of the top protection. Especially when the laser level is subjected to a large external force impact, the buffer airbag can effectively absorb the impact force, slow down the conduction of force, and reduce the risk of damage to the laser head and internal components.

[0018] As a preferred solution of the present invention, an annular groove C is provided at the center of the top of the elastic protective pad, and an annular edge capable of being embedded in the annular groove C is provided at the bottom of the buffer airbag.

[0019] As a further embodiment of the present invention, the cushioning airbag is hemispherical in shape and contains a sealed cavity. This hemispherical design and the gas contained in the sealed cavity together form a highly effective cushioning structure. When the device is impacted, the hemispherical airbag can achieve more effective energy absorption by compressing the air in the sealed cavity, further enhancing the protective effect.

[0020] As a preferred embodiment of the present invention, a plurality of reinforcing ribs are provided on the top inner wall of the sealed cavity. The provision of the reinforcing ribs further enhances the structural strength of the cushioning airbag, preventing deformation or damage to the cushioning airbag due to prolonged use or multiple collisions, ensuring the long-term cushioning effect of the cushioning airbag and extending the service life of the device.

[0021] As a further feature of this invention, the top of the cushioning airbag is transparent. When the sealed cavity is filled with liquid, it functions as a bubble level, assisting the laser level in achieving more precise leveling. This innovative design not only provides a cushioning function but also a leveling indicator, further enhancing the device's practicality. This design effectively optimizes the user experience and improves the laser level's accuracy without increasing the device's size or complexity.

[0022] In summary, the beneficial effects of the present invention compared to the prior art are as follows: the present invention enhances the impact resistance of the overall structure of the laser level by covering the top of the metal support frame with openings on all four sides with an elastic protective pad, thereby avoiding the external force from being directly transmitted to the laser head and preventing damage. An annular protective pad A and an annular protective pad B are provided inside the support frame to clamp the glass cover in the middle, effectively fixing and supporting the glass cover to avoid damage due to vibration or external force. In addition, screw holes and positioning columns are designed at the bottom of the support frame to cooperate with each other to achieve precise connection and fixation with the laser level housing, thereby improving the stability and seismic resistance of the structure. The glass cover is fixed to the protective pad through an annular groove, which reduces stress concentration on the glass and prevents the glass cover from loosening, displacement and cracking.

[0023] In addition, a hemispherical cushioning airbag is designed on top of the elastic protective pad to provide cushioning. This airbag features a sealed cavity, filled with liquid through a transparent top, and functions as a bubble level, facilitating leveling with the laser level. Reinforced ribs ensure the cushioning airbag maintains its stable shape during long-term use, providing reliable protection. This overall solution effectively combines multiple cushioning, securing, and leveling functions, significantly improving the reliability and accuracy of laser levels in complex working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the three-dimensional views of the present invention.

[0025] Figure 2 This is the second three-dimensional view of the present invention.

[0026] Figure 3 This is a three-dimensional view of the utility model installed on the laser level housing.

[0027] Figure 4 This is a cross-sectional view of the utility model installed on the laser level housing.

[0028] Figure 5 for Figure 4 Magnified view of point A in the middle.

[0029] Figure 6 This is an exploded view of the present invention and the laser level housing.

[0030] Figure 7 This is one of the exploded views of the present invention.

[0031] Figure 8 This is the second exploded view of the present invention.

[0032] Figure 9 A three-dimensional view of a cushioning airbag is added to the present invention.

[0033] Figure 10 This is an exploded view of the utility model and the cushioning airbag.

[0034] Figure 11 A cross-sectional view of a cushioning airbag and an enlarged view of a local area in the figure are added to the present invention.

[0035] Explanation of the accompanying drawings: 1. Support frame; 2. Elastic protective pad; 3. Annular protective pad A; 4. Annular protective pad B; 5. Glass cover; 6. Cushioning airbag; 7. Laser level housing; 11. Opening; 12. Screw hole; 13. Positioning column; 14. Positioning hole; 15. Fixing block; 16. Connecting groove; 17. Top cover; 18. Base; 19. Connecting beam; 21. Embedded groove; 22. Annular groove C; 31. Annular groove A; 32. Connecting boss; 41. Annular groove B; 61. Annular edge; 62. Sealed cavity; 63. Reinforcing rib. DETAILED DESCRIPTION

[0036] The following detailed description provides various embodiments or examples for implementing the present invention. These are, of course, merely examples and are not intended to be limiting. Furthermore, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. Such repetition is for simplicity and clarity in describing the present invention and does not imply a specific relationship between the various embodiments and / or configurations discussed.

[0037] In addition, spatially related terms may be used, such as "below," "lower side," "from the inside out," "above," "upper side," and similar terms. These terms are used to facilitate the description of the relationship between one element or feature and another element or feature in the drawings. These spatially related terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, they cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 8The laser head protection device for a laser level shown in FIG. includes a support frame 1 with openings 11 on four sides. The support frame 1 is integrally cast from a metal material, consisting of a top cover 17 and a base 18 spaced apart, and connecting beams 19 connecting the four corners of the top cover 17 and base 18. The top of the top cover 17 is covered with an elastic protective pad 2, made of a resilient rubber material. The pad is secured to the support frame 1 by a fixing block 15 protruding from the top of the top cover 17, which engages a groove 21 on the bottom surface of the elastic protective pad 2 with an interference fit. An annular protective pad A3 and an annular protective pad B4 are located within the support frame 1. An annular groove A31 surrounds the bottom of the annular protective pad A3, and an annular groove B41 surrounds the top of the annular protective pad B4. A glass shield 5 is located between the annular protective pads A3 and B4, with the top and bottom edges of the glass shield 5 respectively inserted into the corresponding annular grooves A31 and B41. The top cover 17 has a concave connection groove 16 at the center of the bottom surface. The annular protection pad A 3 is fixed to the top cover 17 by inserting the upwardly protruding connection boss 32 into the connection groove 16. The annular protection pad B 4 is arranged around the inner wall of the base 18.

[0039] Screw holes 12 are provided along the base 18, through which screws are inserted to connect the laser level housing 7. To prevent unstable installation or displacement, a plurality of downwardly protruding positioning posts 13 are evenly distributed on the bottom surface of the base 18. These positioning posts 13 can be inserted into pre-set positioning holes 14 in the laser level housing 7. The screw holes 12 and positioning posts 13 cooperate to achieve precise connection and fixation with the laser level housing 7, further improving the structural stability and seismic performance.

[0040] In addition, if Figures 9 to 11 The figure shows an embodiment of the present invention in which a cushioning airbag 6 is added to the above embodiment. It can be clearly seen from the figure that this embodiment is basically the same as the first embodiment. In order to enhance the cushioning effect of the top cover 17, especially when the laser level is subjected to a large external force, it can further slow down the transmission of force and reduce the risk of damage to the laser head and internal components. A cushioning airbag 6 is provided on the top of the elastic protective pad 2. Specifically, Figures 1 to 11 As shown, an annular groove C 22 is provided at the top center of the elastic protective pad 2. Figures 9 to 11As shown, in this embodiment, the cushioning airbag 6 is in the shape of a raised hemisphere, and a sealed cavity 62 is provided in the cushioning airbag 6. The top inner wall of the sealed cavity 62 is provided with reinforcing ribs 63 distributed in a cross shape, and the bottom of the cushioning airbag 6 is provided with an annular rim 61 that can be embedded in the annular groove C 22. When the top of the top cover 17 is impacted by a large external force, the hemispherical cushioning airbag 6 can achieve more effective energy absorption by compressing the air in the sealed cavity. It should be noted that if the top of the cushioning airbag 6 is set to be transparent, liquid can be filled in the sealed cavity 62 to be used as a bubble level, which can assist the laser level in achieving a more accurate leveling function when placed, thereby improving the user's convenience.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser head protection device for a laser level, characterized in that: include: A support frame (1) made of metal, the support frame (1) having openings (11) on four sides; An elastic protective pad (2), the elastic protective pad (2) being made of a rubber material and covering the top of the support frame (1); An annular protective pad A (3) and an annular protective pad B (4) are arranged inside the support frame (1), wherein the annular protective pad A (3) is arranged at the top of the support frame (1) and is closely connected to the inner side of the top of the support frame (1), and the annular protective pad B (4) is arranged around the inner wall of the bottom of the support frame (1); A glass shield (5) is clamped between the annular protective pad A (3) and the annular protective pad B (4), wherein the four sides of the glass shield (5) correspond to the four openings (11) of the support frame (1); Screw holes (12) are respectively provided at the bottom edges of the four openings (11) of the support frame (1), and the screw holes (12) are used to connect the laser level housing by screwing in screws.

2. The laser head protection device for a laser level according to claim 1, characterized in that: A plurality of downwardly protruding positioning posts (13) are provided on the bottom surface of the support frame (1), and the positioning posts (13) can be inserted into preset positioning holes (14) on the housing of the laser level.

3. The laser head protection device for a laser level according to claim 1, characterized in that: A protruding fixing block (15) is provided on the top of the support frame (1), and an embedding groove (21) is provided on the bottom surface of the elastic protective pad (2). When the elastic protective pad (2) covers and fits against the top surface of the support frame (1), the fixing block (15) is interference-embedded in the embedding groove (21).

4. The laser head protection device for a laser level according to claim 1, characterized in that: An annular groove A (31) is provided around the bottom of the annular protective pad A (3), an annular groove B (41) is provided around the top of the annular protective pad B (4), the top periphery of the glass shield (5) is inserted into the annular groove A (31), and the bottom periphery of the glass shield (5) is inserted into the annular groove B (41).

5. The laser head protection device for a laser level according to claim 1, characterized in that: A concave connecting groove (16) is provided at the center of the top surface of the support frame (1), and a connecting boss (32) is provided on the top of the annular protective pad A (3) that protrudes upward and can be embedded in the connecting groove (16).

6. The laser head protection device for a laser level according to claim 1, characterized in that: A buffer airbag (6) is provided on the top of the elastic protective pad (2).

7. The laser head protection device for a laser level according to claim 6, characterized in that: An annular groove C (22) is provided at the center of the top of the elastic protective pad (2), and an annular surrounding edge (61) capable of being embedded in the annular groove C (22) is provided at the bottom of the buffer airbag (6).

8. The laser head protection device for a laser level according to claim 7, characterized in that: The cushioning airbag (6) is in a convex hemispherical shape, and a sealed cavity (62) is provided in the cushioning airbag (6).

9. The laser head protection device for a laser level according to claim 8, characterized in that: A plurality of reinforcing ribs (63) are provided on the top inner wall of the sealed cavity (62).

10. A laser head protection device for a laser level according to any one of claims 6 to 9, characterized in that: The top of the buffer airbag (6) is transparent.

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