A measuring device for house construction
The protective sleeve and card slot structure protect the magnet of the leveling ruler, solving the problem of magnet contamination by mud and sand, improving stability and flexibility, and ensuring the accuracy and efficiency of measurement and ceiling installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGXIN CONSTR
- Filing Date
- 2025-08-11
- Publication Date
- 2026-05-26
AI Technical Summary
The magnets of contour rulers are easily contaminated by mud and sand during use, which reduces their adsorption capacity and affects their stability and operational efficiency.
A structure including a protective sleeve and a locking block and a slot is designed. The protective sleeve shields the magnet to prevent impurities from contacting it, and the locking block and slot work together to ensure the stability and flexible use of the magnet. The magnet can slide out of the protective sleeve for adsorption when needed.
This improved the stability of the magnet and the flexibility of the device, ensuring the accuracy of measurements and the convenience of ceiling joist installation, thus enhancing operational efficiency.
Smart Images

Figure CN224285912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a measuring device, specifically a measuring device for building construction, belonging to the field of building measurement technology. Background Technology
[0002] A contour ruler is a tool used to measure or mark height differences, altitudes, etc., and has wide applications in the construction industry. It typically consists of a graduated ruler, a vernier, a base, and a spirit level. Contour rulers are widely used in ceiling construction and floor tiling. The bottom of the base of the contour ruler is equipped with a strong magnet. When installing ceiling joists, the magnet attracts the contour ruler to the joists, and the level is used to judge the flatness and levelness of the joists. When laying floor tiles, the contour ruler is placed on the already laid tiles or the ground base, and the height difference between the scale and the baseline is compared. The height of the tiles to be laid is adjusted to ensure that they are level with the baseline and on the same plane, thus preventing unevenness in the ground.
[0003] However, the magnet on the base of the contour ruler is directly exposed. When laying floor tiles, the magnet will come into direct contact with dirt and other impurities on the tiles, causing these impurities to be directly attracted to the magnet. Excessive accumulation of dirt and sand will reduce the magnet's attraction capacity. At the same time, the attracted dirt and sand is difficult to clean, which reduces the stability of the contour ruler in the installation of ceiling joists and thus affects its normal use. Utility Model Content
[0004] The purpose of this utility model is to provide a measuring device for building construction in order to solve the above problems. The protective sleeve and the cooperation of the clip and the slot provide good shielding and protection for the magnet at the bottom of the base, thereby ensuring the stability of the device during use. When it is necessary to install the device on the ceiling joists by adsorbing them with the magnets, the protective sleeve is rotated 90 degrees so that the magnet can slide out from the through hole on the protective sleeve, thereby increasing the flexibility of the device.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a measuring device for house construction, comprising a base, a ruler rod mounted on the base via an installation structure, two magnets fixedly connected to the bottom end of the base, a protective structure mounted on the base, the protective structure including a protective sleeve, the protective sleeve slidably connected to the base, two through holes opened at the bottom end of the protective sleeve, the magnets slidably connected to the through holes, two locking blocks slidably connected to the base, two locking grooves opened on the protective sleeve, the locking blocks engaging with the locking grooves, a reading structure mounted on the ruler rod, and a second bubble level mounted on the base.
[0006] Preferably, the two card blocks are symmetrically distributed about the center of the base, and the cross-section of the card blocks is "L" shaped.
[0007] Preferably, two guide rods are fixedly connected inside the base, and two locking blocks are slidably connected to the two guide rods respectively.
[0008] Preferably, a spring is sleeved on the outside of the guide rod, one end of the spring is fixedly connected to the base, and the other end of the spring is fixedly connected to the locking block.
[0009] Preferably, a first level bubble is installed at the top of the ruler rod, a counterweight groove is provided inside the ruler rod, and an anti-slip pad is fixedly connected to the bottom of the protective sleeve.
[0010] Preferably, the mounting structure includes a fixing sleeve, the fixing sleeve is fixedly connected to the base, and the ruler rod is inserted into the fixing sleeve.
[0011] Preferably, the fixing sleeve is threaded with a first knob, and the scale rod has an insertion hole, the end of the first knob being inserted into the insertion hole.
[0012] Preferably, the reading structure includes scale lines, the scale rod is provided with scale lines, and a vernier is slidably connected to the scale rod.
[0013] Preferably, the vernier is threaded with a second knob, the end of which abuts against the scale rod.
[0014] The beneficial effects of this utility model are as follows: A protective sleeve is slidably connected to the base, and two through holes are opened at the bottom of the protective sleeve. The magnet is slidably connected to the through holes. The protective sleeve can cover the magnet, and the cooperation of the locking blocks and slots prevents the protective sleeve from moving and causing the magnet to be exposed from the through holes on the protective sleeve. This avoids the magnet coming into direct contact with mud, sand, impurities, etc. from the outside environment during the tile laying operation, thereby improving the magnet's performance and ensuring the stability of the magnet's adsorption performance during ceiling joist installation and other operations. This increases the long-term stability of the device. When it is necessary to install the device on the ceiling joist by adsorbing it with the magnet, the protective sleeve can be rotated 90 degrees to allow the magnet to slide out from the through holes on the protective sleeve, thereby increasing the flexibility of the device. Two locking blocks are slidably connected to the base, and two slots are opened on the protective sleeve. The locking blocks engage with the slots, which increases the stability of the protective sleeve in protecting the magnet. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the connection structure between the fixing sleeve and the ruler rod of this utility model;
[0017] Figure 3 This is a schematic diagram of the connection structure between the base and the protective sleeve of this utility model;
[0018] Figure 4 for Figure 3 The diagram shows an enlarged view of part A.
[0019] In the diagram: 1. Base; 2. Mounting structure; 201. Fixing sleeve; 202. First knob; 203. Insertion hole; 3. Scale rod; 4. Reading structure; 401. Scale line; 402. Vernier; 403. Second knob; 5. First level bubble; 6. Second level bubble; 7. Protective structure; 701. Protective sleeve; 702. Through hole; 703. Locking block; 704. Locking groove; 705. Guide rod; 706. Spring; 8. Magnet; 9. Anti-slip pad; 10. Counterweight groove. Detailed Implementation
[0020] 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.
[0021] Please see Figures 1-4 As shown, a measuring device for house construction includes a base 1, on which a scale rod 3 is mounted via an mounting structure 2. Two magnets 8 are fixedly connected to the bottom end of the base 1. A protective structure 7 is mounted on the base 1, including a protective sleeve 701. The protective sleeve 701 is slidably connected to the base 1. Two through holes 702 are opened at the bottom end of the protective sleeve 701. The magnets 8 are slidably connected to the through holes 702. Two locking blocks 703 are slidably connected to the base 1. Two locking slots 704 are opened on the protective sleeve 701. The locking blocks 703 engage with the locking slots 704. The two locking blocks 703 are symmetrically distributed about the center of the base 1. The cross-section of the locking blocks 703 is "L" shaped. A reading structure 4 is mounted on the scale rod 3. A second level bubble 6 is mounted on the base 1.
[0022] As a technical optimization of this utility model, two guide rods 705 are fixedly connected inside the base 1, and two locking blocks 703 are slidably connected to the two guide rods 705 respectively. The guide rods 705 play a good guiding role for the locking blocks 703, making the sliding of the locking blocks 703 more stable. A spring 706 is sleeved on the outside of the guide rods 705. One end of the spring 706 is fixedly connected to the base 1, and the other end of the spring 706 is fixedly connected to the locking block 703. Through the elastic reset function of the spring 706, the locking block 703 is kept engaged with the locking slot 704, thereby preventing the working magnet 8 of the floor tile from being exposed to the outside and adhering to mud, sand and other impurities due to the sliding and rotation of the protective sleeve 701.
[0023] As a technical optimization of this utility model, a first level bubble 5 is installed at the top of the scale rod 3. The setting of the first level bubble 5 and the second level bubble 6 can intuitively display the horizontal state of the device, thereby ensuring the accuracy of the measurement. A counterweight groove 10 is opened in the scale rod 3. An anti-slip pad 9 is fixedly connected to the bottom of the protective sleeve 701. The setting of the anti-slip pad 9 increases the friction between the protective sleeve 701 and the floor tiles or ceiling joists, making the device more stable when placed, preventing it from sliding or shaking, thereby ensuring the accuracy of the measurement.
[0024] As a technical optimization of this utility model, the installation structure 2 includes a fixing sleeve 201. The fixing sleeve 201 is fixedly connected to the base 1. The ruler rod 3 is inserted into the fixing sleeve 201. The initial positioning of the ruler rod 3 is quickly achieved by inserting the ruler rod 3 into the fixing sleeve 201. A first knob 202 is threadedly connected to the fixing sleeve 201. The ruler rod 3 has an insertion hole 203. The end of the first knob 202 is inserted into the insertion hole 203. The insertion of the first knob 202 into the insertion hole 203 further fixes the ruler rod 3, increasing the stability of the connection between the ruler rod 3 and the fixing sleeve 201.
[0025] As a technical optimization of this utility model, the reading structure 4 includes a scale line 401. The scale line 401 is provided on the ruler rod 3. A vernier 402 is slidably connected to the ruler rod 3. The vernier 402, the scale line 401 and the level are used in conjunction to assist construction personnel in judging the flatness of the ground and determining the thickness of the floor tiles. A second knob 403 is threadedly connected to the vernier 402. The end of the second knob 403 abuts against the ruler rod 3. The setting of the second knob 403 facilitates the fixing of the vernier 402 after adjusting its position.
[0026] In use, this invention first protects the magnet 8 by using a protective sleeve 701 during the tiling process. Then, to increase the stability of the device, a suitable amount of counterweight material (such as sand) can be added from the bottom of the ruler rod 3 into the counterweight groove 10 as needed. This lowers the center of gravity of the device, enhances its stability, and ensures the accuracy of the measurement results. Next, the base 1 is connected to the ruler rod 3. During operation, the ruler rod 3 is inserted into the fixing sleeve 201, and the first knob 202 is rotated to insert its end into the insertion hole 203, thus firmly fixing the ruler rod 3 to the base 1. The mounting structure 2 facilitates the installation of the base 1, making it convenient for use in various applications. A counterweight is installed inside the scale rod 3. During measurement, the device is placed on the plane to be measured, and the first level bubble 5 is observed. If the bubble is centered, the plane is level. If the bubble is off-center, the plane needs to be adjusted until the bubble is centered. The first level bubble 5 is used to determine the levelness of the floor tiles. Next, the vernier 402 is slid on the scale rod 3 to keep it on the same plane as the horizontal baseline projected by the level instrument. Then, the second knob 403 on the vernier 402 is tightened so that its end is firmly against the scale rod 3, thus securing the vernier 402 and preventing displacement during subsequent measurements. For measurement accuracy, the scale line 401 on the ruler rod 3, covered by the vernier 402, represents the height difference between the current ground and the reference surface. Construction workers can use this height difference to judge the flatness of the ground and determine the thickness of the floor tiles. When this device is needed to assist in the installation of the ceiling joists, push the two locking blocks 703 towards the center of the base 1, so that the locking blocks 703 are no longer engaged with the locking slots 704 on the protective sleeve 701. At the same time, the locking blocks 703 retract against the spring 706, thereby quickly releasing the restriction on the protective sleeve 701. Then rotate the protective sleeve 701 ninety degrees, so that the two through holes 70 on the protective sleeve 701... Align the two magnets 8 with the ruler rod 3, and then slide the protective sleeve 701 towards the ruler rod 3 so that the magnet 8 slides out of the through hole 702. It can then be used to adsorb the ceiling joists, thereby installing the device on the ceiling joists through the magnets 8. Then, the level of the device is judged by the second level bubble 6, thus assisting in the installation of the ceiling joists. The protective sleeve 701 provides good protection for the magnets 8. At the same time, by rotating and sliding the protective sleeve 701, the magnets 8 can be quickly switched from the hidden protective state to the working state without complicated installation and disassembly steps, which greatly improves the operating efficiency of the leveling ruler in different construction scenarios.
[0027] 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.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A measuring device for house construction comprising a base (1), characterised in that: A scale rod (3) is mounted on the base (1) via an installation structure (2). Two magnets (8) are fixedly connected to the bottom end of the base (1). A protective structure (7) is mounted on the base (1). The protective structure (7) includes a protective sleeve (701). The protective sleeve (701) is slidably connected to the base (1). Two through holes (702) are opened at the bottom end of the protective sleeve (701). The magnets (8) are slidably connected to the through holes (702). Two locking blocks (703) are slidably connected to the base (1). Two slots (704) are opened on the protective sleeve (701). The locking blocks (703) engage with the slots (704). A reading structure (4) is mounted on the scale rod (3). A second level bubble (6) is mounted on the base (1).
2. The measuring device for house construction according to claim 1, characterized in that: The two card blocks (703) are symmetrically distributed about the center of the base (1), and the cross-section of the card blocks (703) is "L" shaped.
3. The measuring device for house construction according to claim 2, characterized in that: The base (1) is fixedly connected to two guide rods (705), and two locking blocks (703) are slidably connected to the two guide rods (705) respectively.
4. A measuring device for house construction according to claim 3, characterized in that: A spring (706) is sleeved on the outside of the guide rod (705). One end of the spring (706) is fixedly connected to the base (1), and the other end of the spring (706) is fixedly connected to the locking block (703).
5. A measuring device for house construction according to claim 1, characterized in that: The top of the ruler rod (3) is equipped with a first level bubble (5), the ruler rod (3) has a counterweight groove (10), and the bottom of the protective sleeve (701) is fixedly connected with an anti-slip pad (9).
6. A measuring device for house construction according to claim 1, characterized in that: The mounting structure (2) includes a fixing sleeve (201), the fixing sleeve (201) is fixedly connected to the base (1), and the ruler rod (3) is inserted into the fixing sleeve (201).
7. A measuring device for house construction according to claim 6, characterized in that: The fixing sleeve (201) is threaded with a first knob (202), and the ruler rod (3) is provided with a socket (203). The end of the first knob (202) is inserted into the socket (203).
8. A measuring device for house construction according to claim 1, characterized in that: The reading structure (4) includes a scale line (401), the scale rod (3) is provided with a scale line (401), and a vernier (402) is slidably connected to the scale rod (3).
9. A measuring device for house construction according to claim 8, characterized in that: The vernier (402) is threaded with a second knob (403), the end of which abuts against the scale rod (3).