A multifunctional ruler
By designing extension and limiting mechanisms, the problems of unstable plate fixation and inconvenient storage when measuring excessively long objects with a multi-functional ruler are solved, achieving stable measurement and convenient storage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI TONGFANG PROJECT MANAGEMENT CONSULTING CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-12
AI Technical Summary
When measuring excessively long objects, the measuring plate of the existing multi-functional ruler used in construction projects is difficult to fix securely, and it is not convenient to restore the original length for easy storage after use.
It employs an extension mechanism and a limiting mechanism, including components such as rack grooves, gears, racks, springs, and buckles. The extension and retraction of the measuring plate are achieved through gear transmission. Combined with the limiting block and retaining ring structure, it ensures that the measuring plate can return to its original length after use and is easy to store.
It enables stable measurement of excessively long objects and automatically restores its original length after use, making the device easy to store and use.
Smart Images

Figure CN224353717U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of architectural engineering technology, and in particular relates to a multifunctional ruler. Background Technology
[0002] According to the published patent CN221649547U, a multi-functional ruler for construction engineering includes a measuring mechanism. The measuring mechanism includes a measuring ruler shell, on which an adjusting plate is provided. By applying this measuring ruler to different environments, it can be adapted to more diverse engineering environments. In some working environments, when workers need to use a measuring plate or measuring mechanism for measurement, they can stretch the measuring plate to stretch the elastic tensioner between the two elastic pieces in the measuring ruler shell, thereby stretching the measuring plate out of the measuring ruler shell. However, the following shortcomings still exist.
[0003] The aforementioned device, when used, simply involves manually stretching the measuring plate to measure excessively long objects. However, in actual operation, it is difficult to reliably fix the measuring position of the measuring plate, and it is also not conducive to restoring the device to its original length for easy storage after use. Therefore, we propose a multi-functional ruler. Utility Model Content
[0004] The purpose of this utility model is to provide a multifunctional ruler that solves the problem of simply manually stretching the measuring plate to measure excessively long objects, which makes it difficult to reliably fix the measuring position of the measuring plate during actual operation and also makes it difficult to restore the device to its original length for easy storage after use, through the extension mechanism and limiting mechanism.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a multifunctional ruler, including a scale ruler, the inner wall of which is provided with a scale groove, and the inner wall of the scale ruler is provided with an extension mechanism.
[0007] The extension mechanism includes several rack grooves, the inner walls of which are formed on the inner wall of a scale. A rack is slidably connected to the inner walls of each rack groove. An extended scale is fixedly connected to the top outer wall of each rack. A second scale groove is formed on the inner wall of the extended scale. A gear is rotatably connected to the inner wall of the scale. The outer wall of the gear meshes with the outer walls of the several racks. A pinion is fixedly connected to the top outer wall of the gear. A second rack groove is formed on the inner wall of the scale. A rack two is slidably connected to the inner wall. The outer wall of the rack two meshes with the outer wall of the pinion. Several springs are fixedly connected to the outer wall of the rack two. The outer walls of the springs are fixedly connected to the inner wall of the rack groove two. A limit block is fixedly connected to the outer wall of the scale. A limit rod is fixedly connected to the outer wall of the limit block. A buckle is slidably connected to the outer wall of the limit rod. A spring two is fixedly connected to the outer wall of the buckle. The outer wall of the spring two is fixedly connected to the outer wall of the limit rod. The buckle passes through the scale to the inner wall.
[0008] Furthermore, the outer wall of the scale is provided with a limiting mechanism, the limiting mechanism including a storage base, and the inner wall of the storage base is rotatably connected to a rotating shaft.
[0009] Furthermore, a screwdriver is fixedly connected to the outer wall of the rotating shaft, and a square groove is formed on the inner wall of the rotating shaft.
[0010] Furthermore, a square rod is slidably connected to the inner wall of the square groove, and a retaining ring is fixedly connected to the top outer wall of the square rod.
[0011] Furthermore, the inner wall of the storage base is provided with a slot, and the inner wall of the slot is slidably connected to the outer wall of the retaining ring.
[0012] Furthermore, a knob is fixedly connected to the top outer wall of the retaining ring, and a spring is fixedly connected to the inner wall of the storage base.
[0013] Furthermore, a washer is fixedly connected to the top outer wall of the spring three, and the top outer wall of the washer is rotatably connected to the bottom outer wall of the retaining ring.
[0014] Furthermore, a measuring ruler is fixedly connected to the outer wall of the scale, and a measuring groove is provided on the inner wall of the measuring ruler.
[0015] This utility model has the following beneficial effects:
[0016] 1. This utility model features an extended scale. To extend the measurement range, the buckle can be pulled upwards. The buckle will release the rack while compressing the spring, causing the rack to move away from the springs. The rack will then rotate, causing the pinion to rotate, which in turn will rotate the gear, which will then move the rack. All the racks will then move the extended scale. This allows the measurement range of the device to be extended when measuring excessively long objects, and the device can be returned to its original length for easy storage when finished.
[0017] 2. This utility model incorporates a retaining ring. Pressing down on the knob causes the retaining ring to disengage from the slot. Rotating the knob counterclockwise by 45 degrees causes the retaining ring to rotate, which in turn rotates the square rod. The square rod then rotates the rotating shaft, which in turn rotates one end of the screwdriver. After rotation, the screwdriver remains perpendicular to the scale. Releasing the knob causes the washer, under the action of spring three, to reset the retaining ring and insert it back into the slot, indirectly restricting the screwdriver's rotation for user operation. This allows for the direct use of a screwdriver when screw installation or removal is required at the work site, ensuring the screwdriver remains perpendicular to the scale for easy operation.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a cross-sectional view of the scale structure of this utility model;
[0022] Figure 3 This is a cross-sectional view of the extension mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the rack structure of this utility model;
[0024] Figure 5 This is a cross-sectional view of the storage base structure of this utility model;
[0025] Figure 6 This is a cross-sectional view of the limiting mechanism of this utility model;
[0026] Figure 7 This is a schematic diagram of the buckle structure of this utility model.
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 1. Scale; 101. Scale groove; 2. Extension mechanism; 201. Rack groove; 202. Rack; 203. Extended scale; 204. Scale groove two; 205. Gear; 206. Pinion; 207. Rack groove two; 208. Rack two; 209. Spring; 210. Limiting block; 211. Limiting rod; 212. Buckle; 213. Spring two; 3. Limiting mechanism; 301. Storage base; 302. Rotating shaft; 303. Screwdriver; 304. Square groove; 305. Square rod; 306. Snap ring; 307. Snap groove; 308. Knob; 309. Spring three; 310. Washer; 311. Measuring scale; 312. Measuring groove. Detailed Implementation
[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-7 As shown, this utility model is a multifunctional ruler, including a scale ruler 1, a scale groove 101 is provided on the inner wall of the scale ruler 1, and an extension mechanism 2 is provided on the inner wall of the scale ruler 1.
[0031] The extension mechanism 2 includes several rack grooves 201, the inner walls of which are formed on the inner wall of the scale 1. A rack 202 is slidably connected to the inner walls of each rack groove 201. The rack grooves 201 primarily function as sliding limiters for the rack 202, allowing the rack 202 to slide at a fixed angle within the rack grooves 201. An extension scale 203 is fixedly connected to the top outer wall of the rack 202. The inner wall of the extension scale 203 has a graduation groove 204. A gear 205 is rotatably connected to the inner wall of the scale 1. The scale 1 mainly serves to limit the rotation of the gear 205, allowing the gear 205 to rotate only at a fixed position within the scale 1. The outer wall of the gear 205 meshes with the outer walls of several racks 202. A small gear 206 is fixedly connected to the top outer wall of the gear 205. A rack groove 207 is formed on the inner wall of the scale 1. The gear 205 mainly transmits kinetic energy to the racks 202. When the gear 205 rotates, it drives several racks 202. Both racks 202 and 208 move simultaneously. A rack 208 is slidably connected to the inner wall of rack groove 207. The outer wall of rack 208 meshes with the outer wall of pinion 206. Several springs 209 are fixedly connected to the outer wall of rack 208. Rack groove 207 mainly serves as a sliding limit for rack 208, allowing rack 208 to slide at a fixed angle within rack groove 207. The outer walls of the springs 209 are fixedly connected to the inner wall of rack groove 207. (Scale) A limiting block 210 is fixedly connected to the outer wall of the scale 1. A limiting rod 211 is fixedly connected to the outer wall of the limiting block 210. A buckle 212 is slidably connected to the outer wall of the limiting rod 211. The limiting block 210 mainly serves to fix and limit the limiting rod 211. The limiting rod 211 can only be fixed in the position on the limiting block 210. A spring 213 is fixedly connected to the outer wall of the buckle 212. The outer wall of the spring 213 is fixedly connected to the outer wall of the limiting rod 211. The buckle 212 passes through the scale 1 to the inner wall.
[0032] The outer wall of the scale 1 is provided with a limiting mechanism 3, which includes a storage base 301. The inner wall of the storage base 301 is rotatably connected to a rotating shaft 302. The outer wall of the rotating shaft 302 is fixedly connected to a screwdriver 303. The rotating shaft 302 mainly serves to fix and limit the screwdriver 303. When the rotating shaft 302 rotates, it will drive one end of the screwdriver 303 to rotate at the same time. The inner wall of the rotating shaft 302 is provided with a square groove 304. The inner wall of the square groove 304 is slidably connected to a square rod 305. The square groove 304 mainly serves to slide and limit the square rod 305. The square rod 305 can slide and displace at a fixed angle within the square groove 304. The top outer wall of the square rod 305 is fixedly connected to a retaining ring 306.
[0033] The inner wall of the storage base 301 has a slot 307, and the inner wall of the slot 307 is slidably connected to the outer wall of the retaining ring 306. A knob 308 is fixedly connected to the top outer wall of the retaining ring 306. The shape of the knob 308 allows the user to push and pull it by hand. When the knob 308 moves, it will cause the retaining ring 306 to move as well. A spring 309 is fixedly connected to the inner wall of the storage base 301, and a washer 310 is fixedly connected to the top outer wall of the spring 309. The top outer wall is rotatably connected to the bottom outer wall of the retaining ring 306. The storage base 301 mainly serves to fix and limit the spring 309. The spring 309 can only be fixed in the position inside the storage base 301. The outer wall of the scale 1 is fixedly connected to the measuring ruler 311. The inner wall of the measuring ruler 311 is provided with a measuring groove 312. The scale 1 mainly serves to fix and limit the measuring ruler 311. The measuring ruler 311 can only be fixed in the position on the scale 1.
[0034] One specific application of this embodiment is:
[0035] When staff need to use the device, they can directly measure the length of the test object using the scale groove 101 on the scale 1. If it is necessary to extend the measurement range, the latch 212 can be pulled upwards. The latch 212 will release the rack 208 while compressing the spring 213. Subsequently, the rack 208 will be moved away from the springs 209 by the racks 209. The rack 208 will drive the pinion 206 to rotate, the pinion 206 will drive the gear 205 to rotate, the gear 205 will drive the racks 202 to move, and the racks 202 will drive the extension scale 203 to move. The extension scales 203 will move away from each other and expand the measurement range of the device by relying on the scale groove 204. The measuring slot 312 on the upper part can directly measure the angle between objects. If you need to use the screwdriver 303 to install or remove screws, you can press down the knob 308. The knob 308 will cause the retaining ring 306 to disengage from the slot 307. Then, rotate the knob 308 counterclockwise by 45 degrees. The knob 308 will cause the retaining ring 306 to rotate, which will cause the square rod 305 to rotate. The square rod 305 will cause the rotating shaft 302 to rotate, which will cause one end of the screwdriver 303 to rotate. After rotation, the screwdriver 303 will be perpendicular to the scale 1. Finally, release the knob 308. The washer 310 will be driven by the spring 309 to reset the retaining ring 306 and insert it into the slot 307 to indirectly limit the rotation of the screwdriver 303 for the user to operate.
[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A multifunctional ruler, comprising a scale (1), characterized in that: The inner wall of the ruler (1) is provided with a scale groove (101), and the inner wall of the ruler (1) is provided with an extension mechanism (2). The extension mechanism (2) includes several rack grooves (201), the inner walls of which are formed on the inner wall of the scale (1). Each rack groove (201) has a rack (202) slidably connected to its inner wall. An extension scale (203) is fixedly connected to the top outer wall of the rack (202). A second scale groove (204) is formed on the inner wall of the extension scale (203). A gear (205) is rotatably connected to the inner wall of the scale (1). The outer wall of the gear (205) meshes with the outer walls of the racks (202). A pinion (206) is fixedly connected to the top outer wall of the gear (205). A second rack groove (207) is formed on the inner wall of the scale (1). A rack two (208) is slidably connected. The outer wall of the rack two (208) meshes with the outer wall of the pinion (206). A number of springs (209) are fixedly connected to the outer wall of the rack two (208). The outer walls of the springs (209) are fixedly connected to the inner wall of the rack groove two (207). A limit block (210) is fixedly connected to the outer wall of the scale (1). A limit rod (211) is fixedly connected to the outer wall of the limit block (210). A buckle (212) is slidably connected to the outer wall of the limit rod (211). A spring two (213) is fixedly connected to the outer wall of the buckle (212). The outer wall of the spring two (213) is fixedly connected to the outer wall of the limit rod (211). The buckle (212) penetrates the scale (1) to the inner wall.
2. A multifunctional ruler according to claim 1, characterized in that, The outer wall of the scale (1) is provided with a limiting mechanism (3), the limiting mechanism (3) includes a storage base (301), and the inner wall of the storage base (301) is rotatably connected to a rotating shaft (302).
3. A multifunctional ruler according to claim 2, characterized in that, A screwdriver (303) is fixedly connected to the outer wall of the rotating shaft (302), and a square groove (304) is provided on the inner wall of the rotating shaft (302).
4. A multifunctional ruler according to claim 3, characterized in that, A square rod (305) is slidably connected to the inner wall of the square groove (304), and a retaining ring (306) is fixedly connected to the top outer wall of the square rod (305).
5. A multifunctional ruler according to claim 4, characterized in that, The inner wall of the storage base (301) is provided with a slot (307), and the inner wall of the slot (307) is slidably connected to the outer wall of the retaining ring (306).
6. A multifunctional ruler according to claim 5, characterized in that, A knob (308) is fixedly connected to the top outer wall of the retaining ring (306), and a spring (309) is fixedly connected to the inner wall of the storage base (301).
7. A multifunctional ruler according to claim 6, characterized in that, A washer (310) is fixedly connected to the top outer wall of the spring three (309), and the top outer wall of the washer (310) is rotatably connected to the bottom outer wall of the retaining ring (306).
8. A multifunctional ruler according to claim 7, characterized in that, The outer wall of the scale (1) is fixedly connected to a measuring ruler (311), and the inner wall of the measuring ruler (311) is provided with a measuring groove (312).