Novel demarcation device
By using an annular mounting groove and limiting block structure, combined with glue fixation, the problem of uneven stress caused by screw fixing in the laser module is solved, thus achieving the stability and vibration resistance of the laser module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-20
AI Technical Summary
The laser module of existing laser line markers is fixed by multiple screws, which leads to uneven stress release under long-term use and vibration and impact, causing the indicators to deviate.
The system employs an annular mounting groove and a limiting block structure. The laser module is fixed by a glue layer formed by the curing of adhesive. After initial fixation with the elastic limiting block, the position is adjusted and then fixed with glue.
This ensures the stability and vibration resistance of the laser module during long-term use, avoiding performance deviations caused by screw fixing.
Smart Images

Figure CN224019072U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a line projector. Background Technology
[0002] Laser line projectors are widely used in construction engineering, combining the functions of traditional levels and theodolites for line marking. They typically use a vertical or horizontal visible laser to mark horizontal or vertical lines on a target surface.
[0003] Currently, laser marking instruments require adjustments to the laser module. Vertical modules need to be rotated and adjusted left and right, while horizontal modules require rotation, left and right adjustments, and pitch adjustments. Most commercially available laser marking instruments use numerous screws for these adjustments and fixation. However, this method has the following problems: because the laser module is suspended and fixed in place by multiple screws, and due to manual operation, the torque on each screw is inconsistent. Over long-term use and after exposure to vibration and impact, uneven stress release leads to deviations in the indicators. Utility Model Content
[0004] The purpose of this invention is to provide a laser projector that can fix a laser module and ensure the stability of the laser module during use.
[0005] To address the aforementioned problems, this utility model provides a novel laser projector, comprising a housing and a core assembly located within the housing. The core assembly includes a support bracket and a laser module mounted on the support bracket. Its distinguishing feature is that...
[0006] The bracket is provided with at least one annular mounting groove, the axis of the mounting groove is horizontally set, and at least one limiting block protruding from its groove wall is provided in the mounting groove.
[0007] An adhesive layer formed by the curing of glue is filled between the laser module and the mounting groove, and the adhesive layer is used to fix the laser module and the mounting groove.
[0008] As a further improvement of this utility model, the outer surface of the bracket is provided with a through hole communicating with the mounting groove, and the glue is injected into the space between the laser module and the mounting groove through the through hole.
[0009] As a further improvement of this utility model, the limiting block is a spring-shaped structure.
[0010] As a further improvement of this utility model, a limiting groove is provided in the mounting groove, and the limiting block is located in the limiting groove.
[0011] The beneficial effect of this utility model is that, in this utility model, a protruding and elastic limiting block is provided in the mounting groove. After the laser module is inserted into the mounting groove, the limiting block is compressed to make it elastically deformed. The elastic force initially fixes the laser module. Then, the circumferential position is adjusted by rotating the laser module. After the adjustment is completed, glue is applied to form a glue layer between the laser module and the mounting groove, thereby fixing the laser module in the mounting groove. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of the present invention (outer shell not shown);
[0013] Figure 2 for Figure 1 Exploded view of the central mounting slot and laser module structure;
[0014] In the diagram: 200 - mechanism assembly; 201 - bracket; 202 - laser module; 204 - limit block; 205 - through hole; 206 - limit groove. Detailed Implementation
[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0016] Example 1
[0017] like Figures 1-2 As shown, this embodiment includes a housing and a core assembly 200 located within the housing. The core assembly 200 is provided with a bracket 201 and a laser module 202 mounted on the bracket 201. The bracket 201 is provided with an annular mounting groove with its axis horizontally positioned. At least one limiting block 204 protruding from its groove wall is provided in the mounting groove. The space between the laser module 202 and the mounting groove is filled with a dispensing layer formed by the curing of adhesive. The dispensing layer is used to fix the laser module 202 and the mounting groove.
[0018] In this embodiment, a protruding and elastic limiting block 204 is provided in the mounting groove. After the laser module 202 is inserted into the mounting groove, the limiting block 204 is compressed to cause elastic deformation. The elastic force initially fixes the laser module 202. Then, the circumferential position of the laser module 202 is adjusted by rotating it. After the adjustment is completed, glue is applied to form a glue layer between the laser module 202 and the mounting groove, thereby fixing the laser module 202 in the mounting groove. In this embodiment, the limiting block 204 is a spring-shaped structure. In addition, a limiting groove 206 is provided in the mounting groove, and the limiting block 204 is located in the limiting groove 206.
[0019] Example 2
[0020] In this embodiment, the outer surface of the bracket 201 is provided with a through hole 205 that communicates with the mounting groove, and the adhesive is injected into the space between the laser module 202 and the mounting groove through the through hole 205.
[0021] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. A novel line projector, comprising a housing and a mechanism assembly (200) located within the housing, wherein, The mechanism assembly (200) is provided with a bracket (201) and a laser module (202) mounted on the bracket (201), characterized in that, The bracket (201) is provided with at least one annular mounting groove, the axis of the mounting groove is horizontally set, and at least one elastic limiting block (204) protruding from its groove wall is provided in the mounting groove. The laser module (202) and the mounting groove are filled with a dispensing layer formed by the curing of glue, and the dispensing layer is used to fix the laser module (202) and the mounting groove.
2. The novel line projector according to claim 1, characterized in that, The bracket (201) has a through hole (205) on its outer surface that communicates with the mounting groove. Adhesive is injected through the through hole (205) into the space between the laser module (202) and the mounting groove.
3. The novel line projector according to claim 2, characterized in that, The limiting block (204) has a spring-shaped structure.
4. A novel line projector according to claim 3, characterized in that, The mounting slot is provided with a limiting groove (206), and the limiting block (204) is located in the limiting groove (206).