A pulling tool for indoor rapid mapping

By designing an indoor rapid surveying tool with a placement box and a pull-string mechanism, the problems of light affecting measurement accuracy and portability were solved, enabling single-person rapid measurement of long distances.

CN224552399UActive Publication Date: 2026-07-24SHENZHEN TENGHAI EXHIBITION DISPLAY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN TENGHAI EXHIBITION DISPLAY
Filing Date
2025-09-29
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing indoor surveying tools are easily affected by external light when using laser rangefinders, which reduces measurement accuracy. Roll-type materials increase volume and weight, affecting portability, and long-distance measurement is difficult for a single person.

Method used

Design an indoor rapid surveying tool that includes a placement box and a pull-wire mechanism. The pull-wire mechanism includes a rotating component and a wire reel. The wire reel has a rubber protective sleeve on the outside. Each meter of the wire reel is a different color to facilitate observation of the spacing. Limiting caps and main and auxiliary mounting blocks facilitate quick installation and storage.

Benefits of technology

It improves the accuracy and portability of measurements, allowing a single person to quickly measure long distances, thus increasing measurement efficiency and ease of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to indoor surveying and mapping technical field, concretely is a kind of indoor fast surveying and mapping's pulling line tool, including placing box and pulling line mechanism, the pulling line mechanism can be quickly installed in placing box, the pulling line mechanism includes rotatable rotating part and wire roll, the wire roll can be pulled out placing box outside, placing box outside is equipped with rubber protective sleeve, the rubber protective sleeve can protect placing box and pulling line mechanism, by placing box and pulling line mechanism combination formula design, by this design not only installation box carries conveniently, by the color of measuring line in wire roll every other meter between is different, by this design, it is convenient to apply the distance that tape measure etc. cannot measure, intuitive observation interval, and measuring line can be adhered in arbitrary position by film etc., it is convenient for single person to measure right angle etc. difficult to measure position.
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Description

Technical Field

[0001] This utility model relates to the field of indoor surveying technology, specifically a string-drawing tool for rapid indoor surveying. Background Technology

[0002] In the fields of interior decoration, building construction acceptance, furniture customization and installation, and interior space renovation, interior surveying is a fundamental and crucial task. The accuracy and efficiency of its measurement results directly affect the quality and progress of subsequent processes. Currently, the demand for measuring spatial dimensions (such as wall length, height, diagonal distance, and spacing between different areas) is extremely frequent in the process of interior surveying, and efficient and accurate measurement tools are the core support for meeting this demand. For example, patent document CN221704993U discloses an interior design surveying device, which relates to the field of interior design technology. It includes a protective shell, a support base fixedly connected to the bottom of the protective shell, a fixed frame fixedly connected to the outer wall of the support base, a telescopic rod fixedly connected to the outer wall of the fixed frame, a fixed platform fixedly connected to one end of the telescopic rod, and a circular groove opened on the inner wall of the fixed platform. This invention utilizes a protective shell, supporting base, fixing frame, telescopic rod, fixing platform, circular groove, motor, and circular plate in a coordinated manner to facilitate angle adjustment of the indoor surveying device. This results in good adjustment performance and allows for easy adjustment according to user needs. The user activates the telescopic rod, which moves the fixing platform up and down to the designated position. Then, the user activates the motor, which rotates the circular plate to adjust the angle, enhancing practicality and improving the device's effectiveness. However, existing devices using laser rangefinders are susceptible to external light interference, leading to reduced laser visibility and affecting measurement accuracy. Some devices use roll materials, but the increased length of the roll material increases the carrier's volume and weight, significantly reducing portability. Furthermore, the tape measure is difficult to operate when a single person is measuring long distances, affecting data accuracy. Therefore, there is an urgent need to design a string-based tool for rapid indoor surveying to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide a string-based tool for rapid indoor surveying, in order to solve the problems mentioned in the background art, such as the susceptibility of laser rangefinders to external light, which reduces laser visibility and affects measurement accuracy, and the use of roll materials, which increases the volume and weight of the carrier as the length of the roll increases, greatly reducing portability. At the same time, the operation of the tape measure is difficult when a single person is measuring a long distance, which affects the accuracy of the data.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a string-pulling tool for rapid indoor surveying, comprising a placement box and a string-pulling mechanism. The string-pulling mechanism can be quickly installed inside the placement box. The string-pulling mechanism includes a rotatable rotating component and a string reel. The string reel can be pulled out of the outside of the placement box. A rubber protective sleeve is provided on the outside of the placement box to protect the placement box and the string-pulling mechanism.

[0005] Preferably, an arc-shaped groove is formed on the upper left inner wall of the placement box, and a U-shaped fixing plate is fixed on the inner side of the arc-shaped groove.

[0006] Preferably, a fixed bearing is installed on the inner rear wall of the placement box, and four sets of main mounting blocks are fixed on the front outer wall of the placement box.

[0007] Preferably, the wire pulling mechanism includes a limiting cover, a rotating component, and a wire spool. The rotating component is installed inside the placement box, and a wire spool is wound around the center of the rotating component. A limiting cover is installed at the front end of the rotating component, and a connecting cover is connected to the end of the wire spool. The wire spool has a different color every meter.

[0008] Preferably, the limiting cover includes a limiting bearing and four sets of auxiliary mounting blocks. The four sets of auxiliary mounting blocks are fixed to the side of the limiting bearing, and each of the four sets of auxiliary mounting blocks is connected and fixed to the main mounting block by four sets of bolts.

[0009] Preferably, the rotating component includes a main circular block and a rotating shaft. The front end of the main circular block is fixed inside the limiting bearing, and the rear end of the main circular block is fixed with the rotating shaft. The rear end of the rotating shaft passes through the center of the fixed circular plate, and the end of the rotating shaft is inserted into the fixed bearing. A coil of wire is wound around the center of the rotating shaft, and two sets of extension columns are fixed at the left end of the fixed circular plate.

[0010] Preferably, the front end of the main circular block has an inner circular groove, and a protruding cylinder is fixed at the center of the inner circular groove. Multiple extension plates extend from the sidewall of the protruding cylinder to connect with the inner wall of the inner circular groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This is a string-based tool for rapid indoor surveying. It features a combined design of a box and a string mechanism. This design makes the box easy to carry and allows for use when processing large areas. The measuring lines in the string roll are colored every meter, making it convenient for measuring distances that cannot be measured with a tape measure or similar measuring device. It also allows for intuitive observation of spacing. Furthermore, the measuring lines can be attached to any location using film or similar materials, making it easy for a single person to measure difficult-to-measure locations such as right angles.

[0012] This is a string-pull tool for rapid indoor surveying. The main and auxiliary mounting blocks, installed with a limiting cover and a placement box, facilitate quick installation and improve measurement efficiency. By rotating the main circular block with one hand, the rotating shaft can be driven to rotate within the placement box, making it easy to collect the measuring line into a coil. This design can accommodate longer measuring lines, facilitating rapid indoor measurements and improving efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model for storage. Figure 2 This is a schematic diagram showing the unfolded use of the main structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the placement box of this utility model; Figure 4 This is a schematic diagram showing the disassembled wire-pulling mechanism of this utility model; Figure 5 This is a front sectional view of the main structure of this utility model.

[0014] In the diagram: 1. Placement box; 101. Arc-shaped groove; 102. U-shaped fixing plate; 11. Main mounting block; 12. Fixed bearing; 2. Pulling mechanism; 21. Limiting cover; 211. Limiting bearing; 212. Secondary mounting block; 213. Bolt; 22. Rotating component; 221. Main circular block; 2211. Inner circular groove; 2212. Protruding cylinder; 2213. Extension plate; 222. Rotating shaft; 223. Fixed circular plate; 224. Extension column; 23. Wire coil; 24. Connecting cover; 3. Rubber protective sleeve. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 One embodiment provided by this utility model: A string-pulling tool for rapid indoor surveying includes a placement box 1 and a string-pulling mechanism 2. The string-pulling mechanism 2 can be quickly installed inside the placement box 1. The string-pulling mechanism 2 includes a rotatable rotating part 22 and a string reel 23. The string reel 23 can be pulled out of the outside of the placement box 1. A rubber protective sleeve 3 is provided on the outside of the placement box 1 to protect the placement box 1 and the string-pulling mechanism 2.

[0017] As a further feature of this utility model, an arc-shaped groove 101 is provided on the upper left wall inside the placement box 1, and a U-shaped fixing plate 102 is fixedly provided on the inner side of the arc-shaped groove 101. A fixed bearing 12 is installed on the inner rear wall of the placement box 1, and four sets of main mounting blocks 11 are fixed on the outer front wall of the placement box 1. This design facilitates the use of the pull-wire mechanism inside and makes it easy to store.

[0018] As a further improvement of this utility model, the wire pulling mechanism 2 includes a limiting cover 21, a rotating component 22, and a wire coil 23. The rotating component 22 is installed inside the placement box 1, and the wire coil 23 is wound around the center of the rotating component 22. The limiting cover 21 is installed at the front end of the rotating component 22, and the wire end of the wire coil 23 is connected to a connecting cover 24. The wire coil 23 has a different color every meter. The limiting cover 21 includes a limiting bearing 211 and four sets of auxiliary mounting blocks 212. The four sets of auxiliary mounting blocks 212 are fixed on the side of the limiting bearing 211. The four sets of auxiliary mounting blocks 212 are all connected and fixed to the main mounting block 11 by four sets of bolts 213. This design facilitates quick installation in the placement box and makes subsequent use convenient.

[0019] Furthermore, the rotating component 22 includes a main circular block 221 and a rotating shaft 222. The front end of the main circular block 221 is fixed inside the limiting bearing 211, and the rear end of the main circular block 221 is fixed with the rotating shaft 222. The rear end of the rotating shaft 222 passes through the center of the fixed circular plate 223, and the end of the rotating shaft 222 is inserted into the fixed bearing 12. The center of the rotating shaft 222 is wound with a coil 23. Two sets of extension columns 224 are fixed at the left end of the fixed circular plate 223. The front end of the main circular block 221 has an inner circular groove 2211. A protruding cylinder 2212 is fixed at the center of the inner circular groove 2211. Multiple sets of extension plates 2213 extend from the side wall of the protruding cylinder 2212 and connect to the inner wall of the inner circular groove 2211. This design is beneficial for the rapid unwinding and rewinding of the coil, and can be operated by a single person.

[0020] Working principle: When in use, the user first removes the rubber protective sleeve 3, then pulls the connecting cover 24 to pull out the measuring line. After placing the connecting cover 24 at the end of the measurement position, the user moves the placement box 1. The measuring line is released by rotating the wire coil 23 and the rotating shaft 222. When the measurement starting point is reached, the distance can be measured by observing the color that changes every meter and the remaining distance at the end. The installation of this device is also simple. First, the connecting cover 24 is inserted into the arc-shaped groove 101 in the placement box 1. Then, the rotating part 22 is inserted into the placement box 1. When the rear end of the rotating shaft 222 in the rotating part 22 is inserted into the fixed bearing 12, the auxiliary mounting block 212 fixed on the side of the limit bearing 211 is installed on the main mounting block 11 with bolts 213 to complete the installation. Finally, the rubber protective sleeve 3 is put on. The above is the complete working principle of this utility model.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A string-drawing tool for rapid indoor surveying, comprising a placement box (1) and a string-drawing mechanism (2), characterized in that: The placement box (1) can be quickly installed with a pull-wire mechanism (2). The pull-wire mechanism (2) includes a rotatable rotating part (22) and a wire roll (23). The wire roll (23) can be pulled out of the placement box (1). The placement box (1) is covered with a rubber protective sleeve (3). The rubber protective sleeve (3) can protect the placement box (1) and the pull-wire mechanism (2).

2. The string line tool for rapid indoor surveying according to claim 1, characterized in that: An arc-shaped groove (101) is provided on the upper left inner wall of the placement box (1), and a U-shaped fixing plate (102) is fixed on the inner side of the arc-shaped groove (101).

3. The string line tool for rapid indoor surveying according to claim 1, characterized in that: The inner rear wall of the placement box (1) is equipped with a fixed bearing (12), and four sets of main mounting blocks (11) are fixed on the outer front wall of the placement box (1).

4. The string line tool for rapid indoor surveying according to claim 1, characterized in that: The wire pulling mechanism (2) includes a limiting cover (21), a rotating part (22) and a wire roll (23). The rotating part (22) is installed inside the placement box (1). The center of the rotating part (22) is wound with a wire roll (23). The front end of the rotating part (22) is equipped with a limiting cover (21). The end of the wire roll (23) is connected to a connecting cover (24). The wire roll (23) has a different color every meter.

5. A string-drawing tool for rapid indoor surveying according to claim 4, characterized in that: The limiting cover (21) includes a limiting bearing (211) and four sets of auxiliary mounting blocks (212). The four sets of auxiliary mounting blocks (212) are fixed on the side of the limiting bearing (211). The four sets of auxiliary mounting blocks (212) are all connected and fixed to the main mounting block (11) by four sets of bolts (213).

6. The string line tool for rapid indoor surveying according to claim 1, characterized in that: The rotating component (22) includes a main circular block (221) and a rotating shaft (222). The front end of the main circular block (221) is fixed inside the limiting bearing (211). The rear end of the main circular block (221) is fixed with the rotating shaft (222). The rear end of the rotating shaft (222) passes through the center of the fixed circular plate (223). The end of the rotating shaft (222) is inserted into the fixed bearing (12). The center of the rotating shaft (222) is wound with a coil (23). Two sets of extension columns (224) are fixed at the left end of the fixed circular plate (223).

7. A string-drawing tool for rapid indoor surveying according to claim 6, characterized in that: The front end of the main circular block (221) has an inner circular groove (2211) opened inward. A protruding cylinder (2212) is fixed in the center of the inner circular groove (2211). Multiple extension plates (2213) extend from the side wall of the protruding cylinder (2212) to connect to the inner wall of the inner circular groove (2211).