Impact-resistant steel tape

Abstract

The utility model discloses an anti -impact steel tape measure relates to steel tape measure technical field, including the rule shell, the inside rotation of rule shell is connected with the pivot, the outer wall fixedly connected with the tape of pivot, the inner wall of rule shell is provided with the protection subassembly, and the inside of rule shell is provided with the brake assembly. That anti -impact steel tape measure, through setting buffer assembly and protection structure realized multiple beneficial effects, when the tape is impacted and deviates, and the moving block slides along the fixed plate inner wall and extrudes the buffer spring, and utilizes the elastic reaction force and realizes the automatic reset, and effectively inhibits the deviation, and the combination design of arcuate elastic sheet and guide block further restricts the tape moving track, and the stability under the axial and torsional load is improved significantly, and the protection sleeve forms the isolation buffer layer when the equipment falls, avoids the rule shell and directly hits the ground, and the anti -drop performance is enhanced greatly, and through the mechanical structure synergy, the anti -impact ability and use reliability of the tape are improved comprehensively.

Description

Technical Field

[0001] This utility model relates to the field of steel tape measure technology, specifically an impact-resistant steel tape measure. Background Technology

[0002] Steel measuring tapes are indispensable measuring tools in daily life and engineering work. Their core function is to accurately obtain the length, width, or height of objects. Whether it's measuring wall dimensions in interior decoration to plan furniture placement, determining beam and column spacing in building construction to ensure structural stability, or inspecting part specifications in industrial manufacturing to ensure product quality, steel measuring tapes are indispensable. They help users quickly determine whether a space meets design requirements, avoiding rework or safety hazards caused by dimensional deviations. When working outdoors, steel measuring tapes, with their sturdy and durable characteristics, can adapt to complex environments. Even if accidentally dropped or subjected to minor impacts, they can still maintain measurement accuracy, providing reliable support for tasks such as field exploration and topographic mapping. For craftspeople, they are an excellent helper for fine craftsmanship. Whether cutting fabric, making woodwork, or weaving handicrafts, steel measuring tapes can accurately control dimensions, making the work more perfect. Their portability also makes them a practical piece of equipment to carry with you, meeting temporary measurement needs at any time.

[0003] However, in existing technologies, some steel measuring tapes use reinforced composite materials and buffer components, which have stress concentration effects. Under long-term impact, they are prone to micro-cracks, and the multi-layer protection leads to axial expansion, which violates ergonomics. Composite manufacturing is also difficult and costly. Therefore, we need an impact-resistant steel measuring tape. Summary of the Invention

[0004] The purpose of this invention is to provide an impact-resistant steel tape measure to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impact-resistant steel tape measure, comprising a casing, a rotating shaft rotatably connected inside the casing, a tape fixedly connected to the outer wall of the rotating shaft, a protective component provided on the inner wall of the casing, a braking component provided inside the casing, the protective component including a guide block fixedly connected inside the casing, an arc-shaped spring fixedly connected inside the casing, a fixed plate fixedly connected inside the casing, a buffer spring fixedly connected inside the fixed plate, a moving block fixedly connected to one end of the buffer spring, and a protective sleeve provided on the outer wall of the casing.

[0006] Preferably, the ruler shell forms a limiting structure with the ruler strip through a guide block, and the guide block is a dovetail groove type, and the inner diameter of the guide block matches the outer diameter of the ruler strip.

[0007] Preferably, the fixed plate forms an elastic structure with the moving block through a buffer spring, and one end of the buffer spring is fixedly connected to the interior of the fixed plate, and the other end of the buffer spring is fixedly connected to one side of the moving block.

[0008] Preferably, the braking assembly includes a push button slidably connected to the outer wall of the ruler housing. A connecting rod is fixedly connected to the bottom of the push button. A movable rod is hinged to one end of the connecting rod. A rack is fixedly connected to one end of the movable rod. A fixed rod is fixedly connected to one side of the rack. A support spring is fixedly connected to one side of the rack. A mounting plate is fixedly connected to one end of the support spring. One side of the mounting plate is fixedly connected to one side of the fixed plate. An external gear is fixedly connected to the outer wall of the rotating shaft. A limit groove is formed at the top of the push button. A fixed frame is fixedly connected to the top of the ruler housing. A return spring is fixedly connected inside the fixed frame. A limit block is fixedly connected to one end of the return spring. A connecting column is fixedly connected to the top of the limit block. A movable frame is fixedly connected to the top of the connecting column.

[0009] Preferably, the movable frame is formed by connecting column and limiting block to form a movable structure, and one end of the connecting column is fixedly connected to the bottom of the movable frame, and the other end of the connecting column is fixedly connected to the top of the limiting block.

[0010] Preferably, the push button forms a movable structure with a connecting rod and a moving rod, and one end of the connecting rod is hinged to the bottom of the push button, and the other end of the connecting rod is hinged to one end of the moving rod.

[0011] Preferably, the rack is fixed to the shaft via an external gear, and the outer wall of the external gear meshes with the outer wall of the rack, while the inner wall of the external gear is fixedly connected to the outer wall of the shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In the scheme of this application: 1. To address the issues of easy deviation and poor stability of existing measuring tapes under external impact, this application achieves multiple beneficial effects by incorporating a buffer component and a protective structure. When the tape is deviated by impact, the moving block slides along the inner wall of the fixed plate and compresses the buffer spring, utilizing elastic reaction force to achieve automatic reset and effectively suppress deviation. The combined design of the bow-shaped spring and the guide block further constrains the tape's movement trajectory, significantly improving stability under axial and torsional loads. Simultaneously, the protective sleeve forms an isolation buffer layer when the device falls, preventing the tape shell from directly impacting the ground and greatly enhancing its drop resistance. Through the synergistic effect of the mechanical structure, the impact resistance and reliability of the measuring tape are comprehensively improved.

[0013] 2. To address the issue of insufficient stability in the locking mechanism of existing tape measures, this application employs a locking structure comprised of a push button, connecting rod, moving rod, rack, and external gear. This structure achieves stable and reliable locking of the tape measure. Moving the push button drives a series of components to engage the rack and external gear, thereby fixing the rotating shaft and locking the tape measure. Simultaneously, a limit block engages within a limit groove, securing the push button and preventing accidental operation. To release the lock, moving the moving frame moves the relevant components, releasing the push button's engagement. This effectively improves the stability and reliability of the tape measure locking, providing a better user experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the rotating shaft and ruler structure of this utility model; Figure 3 This is a schematic diagram of the buffer spring and moving block structure of this utility model; Figure 4 This is a schematic diagram of the rack and external gear structure of this utility model; Figure 5 This is a schematic diagram of the push button and limiting groove structure of this utility model; Figure 6 This is a schematic diagram of the limiting block and connecting column structure of this utility model.

[0015] In the diagram: 1. Ruler housing; 2. Rotating shaft; 3. Ruler belt; 4. Protective assembly; 5. Braking assembly; 401. Guide block; 402. Bow-shaped spring; 403. Fixing plate; 404. Buffer spring; 405. Moving block; 406. Protective sleeve; 501. Push button; 502. Connecting rod; 503. Moving rod; 504. Rack; 505. Fixing rod; 506. Support spring; 507. Mounting plate; 508. External gear; 509. Limiting groove; 510. Fixing frame; 511. Return spring; 512. Limiting block; 513. Connecting column; 514. Moving frame. Detailed Implementation

[0016] 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.

[0017] This utility model embodiment provides an impact-resistant steel tape measure, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the device includes a ruler housing 1, a rotating shaft 2 rotatably connected inside the ruler housing 1, a ruler belt 3 fixedly connected to the outer wall of the rotating shaft 2, a protective component 4 provided on the inner wall of the ruler housing 1, and a braking component 5 provided inside the ruler housing 1. The protective component 4 includes a guide block 401, which is fixedly connected inside the ruler housing 1. An arc-shaped spring 402 is fixedly connected inside the ruler housing 1. A fixing plate 403 is fixedly connected inside the ruler housing 1. A buffer spring 404 is fixedly connected inside the fixing plate 403. A moving block 405 is fixedly connected to one end of the buffer spring 404. A protective sleeve 406 is provided on the outer wall of the ruler housing 1. When the ruler belt 3 is pulled... The ruler belt 3 drives the rotating shaft 2 to rotate inside the ruler housing 1. If it is deviated due to external impact, it will push the moving block 405 to move along the inner wall of the fixed plate 403, causing the moving block 405 to compress the buffer spring 404 and contract. Under the action of elasticity, it will have a reaction force on the moving block 405, so that it resets the ruler belt 3 and prevents it from deviating. When the ruler belt 3 moves, it will pass through the bow-shaped spring 402 and then move along the inner wall of the guide block 401, which further improves the stability of the ruler belt 3. It can cope with load conditions such as axial impact and torsional impact. In the event of a fall, the protective sleeve 406 can prevent the ruler housing 1 from directly contacting the ground, thus improving the anti-fall effect.

[0018] Furthermore, such as Figure 2 As shown, the ruler shell 1 forms a limiting structure with the ruler belt 3 through the guide block 401. The guide block 401 is a dovetail groove type, and the inner diameter of the guide block 401 matches the outer diameter of the ruler belt 3, which allows the ruler belt 3 to move along the inner wall of the guide block 401, thereby improving the movement stability of the ruler belt 3.

[0019] Furthermore, such as Figure 3 As shown, the fixed plate 403 forms an elastic structure with the moving block 405 through the buffer spring 404, and one end of the buffer spring 404 is fixedly connected to the inside of the fixed plate 403, and the other end of the buffer spring 404 is fixedly connected to one side of the moving block 405. This allows the buffer spring 404 to support the moving block 405 with the support of the fixed plate 403, thereby improving the support effect of the fixed plate 403 on the moving block 405.

[0020] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the braking assembly 5 includes a push button 501, which is slidably connected to the outer wall of the ruler housing 1. A connecting rod 502 is fixedly connected to the bottom of the push button 501. A moving rod 503 is hinged to one end of the connecting rod 502. A rack 504 is fixedly connected to one end of the moving rod 503. A fixing rod 505 is fixedly connected to one side of the rack 504. A support spring 506 is fixedly connected to one side of the rack 504. A mounting plate 507 is fixedly connected to one end of the support spring 506, and one side of the mounting plate 507 is fixedly connected to one side of the fixing plate 403. An external gear 508 is fixedly connected to the outer wall of the rotating shaft 2. A limit groove 509 is formed on the top of the push button 501. A fixing frame 510 is fixedly connected to the top of the ruler housing 1. A return spring 511 is fixedly connected inside the fixing frame 510. A limit block 512 is fixedly connected to one end of the return spring 511. A connecting post 513 is fixedly connected to the top of the limit block 512. A movable frame 514 is fixedly connected to the top of column 513. To lock the ruler 3, the push button 501 can be moved to move the connecting rod 502, which in turn moves the movable rod 503. The movable rod 503 then moves the rack 504. The rack 504 overcomes the elastic force of the support spring 506 and moves the fixed rod 505 along the inner wall of the mounting plate 507. When the rack 504 moves to engage with the external gear 508, the external gear 508... 08 is fixed, thereby fixing the rotating shaft 2 and locking the tape 3. At the same time, when the push button 501 moves, it will push the limit block 512 to move along the inner wall of the fixing frame 510, so that the limit block 512 is engaged in the limit groove 509, thus fixing the push button 501. To unlock, the moving frame 514 can be moved to drive the connecting column 513 to move, so that the connecting column 513 drives the limit block 512 to move, thus releasing the engagement and fixing of the push button 501.

[0021] Furthermore, such as Figure 6 As shown, the movable frame 514 forms a movable structure with the connecting column 513 and the limiting block 512. One end of the connecting column 513 is fixedly connected to the bottom of the movable frame 514, and the other end of the connecting column 513 is fixedly connected to the top of the limiting block 512. This allows the connecting column 513 to move the limiting block 512 when the movable frame 514 moves the connecting column 513.

[0022] Furthermore, such as Figure 4 The push button 501 forms a movable structure with the connecting rod 502 and the moving rod 503. One end of the connecting rod 502 is hinged to the bottom of the push button 501, and the other end of the connecting rod 502 is hinged to one end of the moving rod 503. This allows the push button 501 to move the connecting rod 502, which in turn causes the connecting rod 502 to move the moving rod 503.

[0023] Furthermore, such as Figure 4As shown, the rack 504 forms a fixed structure with the rotating shaft 2 through the external gear 508, and the outer wall of the external gear 508 is meshed with the outer wall of the rack 504, and the inner wall of the external gear 508 is fixedly connected with the outer wall of the rotating shaft 2. This allows the external gear 508 to be unable to rotate when the rack 504 meshes with the external gear 508, thereby fixing the rotating shaft 2.

[0024] Working principle: When the measuring tape 3 is pulled, the measuring tape 3 drives the rotating shaft 2 to rotate inside the measuring tape housing 1. If it is deviated due to external impact, it will push the moving block 405 to move along the inner wall of the fixed plate 403, causing the moving block 405 to compress the buffer spring 404 and contract. Under the action of elasticity, a reaction force will be applied to the moving block 405, causing it to reset the measuring tape 3 and prevent deviation. In addition, when the measuring tape 3 moves, it will pass through the bow-shaped spring 402 and then move along the inner wall of the guide block 401, which further improves the stability of the measuring tape 3. It can cope with axial impact and torsional impact load conditions. In the event of a fall, the protective sleeve 406 can prevent the measuring tape housing 1 from directly contacting the ground, improving the anti-fall effect. To lock the measuring tape 3, the push button 501 can be moved to drive the connecting rod 502 to move, so that... The connecting rod 502 drives the moving rod 503 to move, which in turn drives the rack 504 to move. The rack 504 overcomes the elastic force of the supporting spring 506 and drives the fixing rod 505 to move along the inner wall of the mounting plate 507. When the rack 504 moves to mesh with the external gear 508, the external gear 508 is fixed, thereby fixing the rotating shaft 2 and completing the locking of the scale 3. At the same time, when the push button 501 moves, it pushes the limiting block 512 to move along the inner wall of the fixing frame 510, so that the limiting block 512 is engaged in the limiting groove 509, thus completing the fixing of the push button 501. To unlock, the moving frame 514 can be moved to drive the connecting column 513 to move, which in turn drives the limiting block 512 to move, thus releasing the engagement and fixing of the push button 501.

[0025] 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. An impact-resistant steel tape measure, comprising a casing (1), characterized in that: The ruler housing (1) is rotatably connected to a rotating shaft (2), and a ruler belt (3) is fixedly connected to the outer wall of the rotating shaft (2). A protective component (4) is provided on the inner wall of the ruler housing (1). A braking component (5) is provided inside the ruler housing (1). The protective component (4) includes a guide block (401), and the guide block (401) is fixedly connected inside the ruler housing (1). An arc-shaped spring (402) is fixedly connected inside the ruler housing (1). A fixing plate (403) is fixedly connected inside the ruler housing (1). A buffer spring (404) is fixedly connected inside the fixing plate (403). A moving block (405) is fixedly connected to one end of the buffer spring (404). A protective sleeve (406) is provided on the outer wall of the ruler housing (1).

2. The impact-resistant steel tape measure according to claim 1, characterized in that: The ruler shell (1) forms a limiting structure with the ruler strip (3) through the guide block (401), and the guide block (401) is a dovetail groove type, and the inner diameter of the guide block (401) matches the outer diameter of the ruler strip (3).

3. The impact-resistant steel tape measure according to claim 1, characterized in that: The fixed plate (403) forms an elastic structure with the moving block (405) through the buffer spring (404), and one end of the buffer spring (404) is fixedly connected to the inside of the fixed plate (403), and the other end of the buffer spring (404) is fixedly connected to one side of the moving block (405).

4. The impact-resistant steel tape measure according to claim 1, characterized in that: The braking assembly (5) includes a push button (501), which is slidably connected to the outer wall of the housing (1). A connecting rod (502) is fixedly connected to the bottom of the push button (501). A moving rod (503) is hinged to one end of the connecting rod (502). A rack (504) is fixedly connected to one end of the moving rod (503). A fixing rod (505) is fixedly connected to one side of the rack (504). A support spring (506) is fixedly connected to one side of the rack (504). A mounting plate (507) is fixedly connected to one end of the support spring (506). The mounting plate (507) is also fixedly connected to the other end of the rack (504). 7) is fixedly connected to one side of the fixed plate (403). The outer wall of the rotating shaft (2) is fixedly connected to an external gear (508). The top of the push button (501) is provided with a limit groove (509). The top of the ruler shell (1) is fixedly connected to a fixed frame (510). The inside of the fixed frame (510) is fixedly connected to a return spring (511). One end of the return spring (511) is fixedly connected to a limit block (512). The top of the limit block (512) is fixedly connected to a connecting column (513). The top of the connecting column (513) is fixedly connected to a moving frame (514).

5. The impact-resistant steel tape measure according to claim 4, characterized in that: The movable frame (514) forms a movable structure with the connecting column (513) and the limiting block (512), and one end of the connecting column (513) is fixedly connected to the bottom of the movable frame (514), and the other end of the connecting column (513) is fixedly connected to the top of the limiting block (512).

6. The impact-resistant steel tape measure according to claim 4, characterized in that: The push button (501) forms a movable structure with the moving rod (503) via the connecting rod (502), and one end of the connecting rod (502) is hinged to the bottom of the push button (501), and the other end of the connecting rod (502) is hinged to one end of the moving rod (503).

7. The impact-resistant steel tape measure according to claim 4, characterized in that: The rack (504) forms a fixed structure with the shaft (2) through the external gear (508), and the outer wall of the external gear (508) meshes with the outer wall of the rack (504), and the inner wall of the external gear (508) is fixedly connected to the outer wall of the shaft (2).

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