TWI871204B - Spirit level - Google Patents

Abstract

The invention relates to a spirit level, which includes a frame and a magnetic module. The frame is provided with a base plate. One side of the base plate adjacent to the exterior of the frame is provided with an outer surface. One side of the base plate adjacent to the interior of the frame is provided with a first inner surface and a first recess adjacent to the first inner surface. The distance from the first inner surface to the outer surface forms a first thickness, and the distance from the inner edge of the first recess to the outer surface forms a second thickness, which is less than the first thickness. The magnetic module can provide magnetism and is arranged in the first recess. Through the aforementioned structure, the spirit level can not only be magnetically attached to the surface to be measured but also maintain the flatness of the outer surface of the frame.

Description

Level

The present invention mainly discloses a level, particularly a level fixed to a surface by magnetic attraction.

Please refer to the patent case of "Improved Structure of Level Ruler" with Patent No. M533737 of Taiwan, which is a level ruler, including a top surface and a bottom surface which are parallel to each other, and a body for mounting at least one level tube; the body has at least one through hole, at least a portion of the level tube is exposed from the through hole, a closed end positioning hole of the level tube is provided on one side of the through hole, and an open end positioning hole of the level tube is provided opposite to the through hole, for accommodating the two ends of the level tube; a magnet positioning hole is provided on one side of the open end positioning hole of at least one level tube, so that the magnet is fixed in the magnet positioning hole, and the level tube is also sealed and fixed at the same time.

However, the above method of fixing the magnet using the magnet positioning hole requires high processing accuracy. If the depth of the magnet positioning hole is slightly different from the thickness of the magnet, the magnet will be convex or concave, resulting in inaccurate level measurement. The magnet positioning hole is also easily contaminated with dirt or iron filings.

In view of the defects of the above-mentioned known structures, the inventors of the present invention have designed a level that can overcome all the defects of the above-mentioned known structures.

The main purpose of the level of the present invention is to provide a level including a frame and a magnetic module, the frame is provided with a bottom plate, a surface is provided on one side of the bottom plate adjacent to the outside of the frame, a first inner surface and a first recess adjacent to the first inner surface are provided on one side of the bottom plate adjacent to the inside of the frame, the distance from the first inner surface to the surface forms a first thickness, the distance from the inner periphery of the first recess to the surface forms a second thickness, the second thickness is less than the first thickness, the magnetic module can provide magnetic force and is provided in the first recess, the level can be adsorbed on the plane to be measured through the magnetic force through the above structure and can also maintain the surface of the frame flat.

A ratio of the second thickness to the first thickness is less than 0.7.

A second inner surface is arranged on one side of the bottom plate adjacent to the inner part of the frame, the first recess is arranged between the first inner surface and the second inner surface, and the first recess is adjacent to the second inner surface, and the distance from the second inner surface to the surface is equal to the first thickness.

The magnetic module includes a first mounting seat and a first magnetic member. The first mounting seat is arranged in the first recess and combined with the frame. The first mounting seat is provided with a first slot. The first magnetic member has ferromagnetism and is plugged into the first slot.

The opening of the first slot faces the bottom plate, one end of the first magnetic member directly contacts the inner periphery of the first recess, and one end of the first magnetic member opposite to the first recess abuts against the bottom surface of the first slot.

The frame is provided with a first side plate connected to the bottom plate in an integrally formed structure. The first side plate is provided with a first side hole. The first mounting seat passes through the first side hole along a direction parallel to the bottom plate and is inserted into the interior of the frame.

The frame is provided with a second side plate connected to the base plate with an integrally formed structure. The first side plate and the second side plate are arranged on opposite sides of the base plate. The second side plate is provided with a first positioning hole. The cross-sectional area of the first positioning hole is smaller than the cross-sectional area of the first side hole. A first positioning flange is provided at one end of the first mounting seat adjacent to the second side plate, and the first positioning flange is plugged into the first positioning hole.

The first mounting seat is provided with at least one first latching flange on a side opposite to the bottom plate. The at least one first latching flange can be elastically deformed and abut against the inner periphery of the first side plate adjacent to the second side plate.

A third inner surface and a second recessed portion adjacent to the third inner surface are disposed on one side of the bottom plate adjacent to the inner part of the frame. The second inner surface and the third inner surface are disposed on two opposite sides of the first inner surface. The second recessed portion is disposed between the first inner surface and the third inner surface, and the second recessed portion is adjacent to the first inner surface. The distance from the third inner surface to the surface is equal to the first thickness. The distance from the inner periphery of the part to the surface forms a third thickness, the ratio of the third thickness to the first thickness is less than 0.7, the first side plate is provided with a second side hole, the second side plate is provided with a second positioning hole, the cross-sectional area of the second positioning hole is smaller than the cross-sectional area of the second side hole, the magnetic module includes a second mounting seat and a second magnetic member, the second mounting seat The seat passes through the second side hole in a direction parallel to the base plate and is arranged in the second recess and combined with the frame. The second mounting seat is provided with a second slot, and the opening of the second slot faces the base plate. The second magnetic member has ferromagnetism and is inserted into the second slot. One end of the second magnetic member directly contacts the inner periphery of the second recess, and the end of the second magnetic member opposite to the second recess abuts against the bottom surface of the second slot. A second positioning flange is provided at one end of the second mounting seat adjacent to the second side plate, and the second positioning flange is inserted into the second positioning hole. At least one second latching flange is provided on a side of the second mounting seat opposite to the base plate, and the at least one second latching flange can be elastically deformed and abut against the inner periphery of a side of the first side plate adjacent to the second side plate.

Other objects, advantages and novelties of the present invention will become more apparent from the following detailed description and the accompanying drawings.

The technology, means and effects adopted by the present invention are described in detail below with reference to a preferred embodiment and accompanying drawings. This is for illustrative purposes only and is not limited to this structure in patent applications.

Referring to FIG. 1 to FIG. 8 , the three-dimensional appearance diagram, three-dimensional exploded diagram and cross-sectional structure diagram of the level meter of the present invention are shown. The level meter 10 of the present invention includes a frame 20 and a magnetic module 30; wherein:

The frame 20 is provided with a bottom plate 21, and a surface 211 is provided on one side of the bottom plate 21 adjacent to the outside of the frame 20. A first inner surface 212 and a first recess 213 adjacent to the first inner surface 212 are provided on one side of the bottom plate 21 adjacent to the inside of the frame 20. The distance from the first inner surface 212 to the surface 211 forms a first thickness T1, and the distance from the inner periphery of the first recess 213 to the surface 211 forms a second thickness T2, and the second thickness T2 is less than the first thickness T1.

The magnetic attraction module 30 can provide magnetic force and is disposed in the first recess 213 .

The ratio of the second thickness T2 to the first thickness T1 is less than 0.7. In the present embodiment, the ratio of the second thickness T2 to the first thickness T1 is less than 0.4.

A second inner surface 214 is disposed on one side of the bottom plate 21 adjacent to the interior of the frame 20. The first recess 213 is disposed between the first inner surface 212 and the second inner surface 214. The first recess 213 is adjacent to the second inner surface 214. The distance from the second inner surface 214 to the surface 211 is equal to the first thickness T1.

The magnetic module 30 includes a first mounting seat 31 and a first magnetic member 32. The first mounting seat 31 is disposed in the first recess 213 and combined with the frame 20. The first mounting seat 31 is provided with a first slot 311. The first magnetic member 32 has ferromagnetism and is inserted into the first slot 311.

The opening of the first slot 311 faces the bottom plate 21 , one end of the first magnetic member 32 directly contacts the inner periphery of the first recess 213 , and one end of the first magnetic member 32 opposite to the first recess 213 abuts against the bottom surface of the first slot 311 .

The frame 20 is provided with a first side plate 22 connected to the bottom plate 21 in an integrally formed structure. The first side plate 22 is provided with a first side hole 221. The first mounting seat 31 passes through the first side hole 221 along a direction parallel to the bottom plate 21 and is inserted into the frame 20.

The frame 20 is provided with a second side plate 23 connected to the bottom plate 21 with an integrally formed structure. The first side plate 22 and the second side plate 23 are arranged on opposite sides of the bottom plate 21. The second side plate 23 is provided with a first positioning hole 231. The cross-sectional area of the first positioning hole 231 is smaller than the cross-sectional area of the first side hole 221. The first mounting seat 31 is provided with a first positioning flange 312 at one end adjacent to the second side plate 23. The first positioning flange 312 is inserted into the first positioning hole 231.

At least one first latching flange 313 is disposed on a side of the first mounting seat 31 opposite to the bottom plate 21 . The at least one first latching flange 313 can be elastically deformed and abut against an inner periphery of a side of the first side plate 22 adjacent to the second side plate 23 .

A third inner surface 215 and a second recess 216 adjacent to the third inner surface 215 are provided on one side of the bottom plate 21 adjacent to the inner part of the frame 20. The second inner surface 214 and the third inner surface 215 are provided on opposite sides of the first inner surface 212. The second recess 216 is provided between the first inner surface 212 and the third inner surface 215, and the second recess 216 is adjacent to the first inner surface 212. The distance from the third inner surface 215 to the surface 211 is equal to the first thickness. The distance from the inner periphery of the second recess 216 to the surface 211 forms a third thickness T3, and the ratio of the third thickness T3 to the first thickness T1 is less than 0.7. The first side plate 22 is provided with a second side hole 222, and the second side plate 23 is provided with a second positioning hole 232. The cross-sectional area of the second positioning hole 232 is smaller than the cross-sectional area of the second side hole 222. The magnetic module 30 includes a second mounting seat 33 and a second magnetic member 34. The second mounting seat 33 is arranged in the second recess 216 and combined with the frame 20 through the second side hole 222 in a direction parallel to the bottom plate 21. The second mounting seat 33 is provided with a second slot 331. The opening of the second slot 331 faces the bottom plate 21. The second magnetic member 34 has ferromagnetism and is inserted into the second slot 331. One end of the second magnetic member 34 directly contacts the inner periphery of the second recess 216. The second magnetic member 34 is opposite to the second recess. One end of 216 abuts against the bottom surface of the second slot 331, and a second positioning flange 332 is provided at one end of the second mounting seat 33 adjacent to the second side plate 23, and the second positioning flange 332 is inserted into the second positioning hole 232. The second mounting seat 33 is provided with at least one second latching flange 333 on a side opposite to the bottom plate 21, and the at least one second latching flange 333 can be elastically deformed and abut against the inner periphery of the first side plate 22 adjacent to the second side plate 23.

The level 10 can be adsorbed to the plane to be measured by magnetic force through the above structure, and can maintain the surface of the frame 20 flat, and can also ensure that the level 10 can provide sufficient magnetic force to act on the plane to be measured. The design of not providing a groove on the bottom plate 21 can ensure that the magnetic module 30 will not bulge or sink, which can ensure the accuracy of the level 10 and avoid the accumulation of dirt.

Based on the above, it can be concluded that the present invention has the following advantages:

1. The level of the present invention includes a frame and a magnetic suction module. The frame is provided with a bottom plate. A surface is provided on one side of the bottom plate adjacent to the outside of the frame. A first inner surface and a first recess adjacent to the first inner surface are provided on one side of the bottom plate adjacent to the inside of the frame. The distance from the first inner surface to the surface forms a first thickness. The distance from the inner periphery of the first recess to the surface forms a second thickness. The second thickness is less than the first thickness. The magnetic suction module can provide magnetic force and is provided in the first recess. Through the above structure, the level can be adsorbed on the plane to be measured through magnetic force and can also maintain the surface of the frame flat.

However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, any changes in numerical values or replacement of equivalent components, or equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

10: Leveler 20: Frame 21: Bottom plate 211: Surface 212: First inner surface 213: First recess 214: Second inner surface 215: Third inner surface 216: Second recess 22: First side plate 221: First side hole 222: Second side hole 23: Second side plate 231: First positioning hole 232: Second positioning hole 30: Magnetic module 31: First mounting seat 311: First slot 312: First positioning flange 313: First latch flange 32: First magnetic member 33: Second mounting seat 331: Second slot 332: Second positioning flange 333: Second latch flange 34: Second magnetic part T1: First thickness T2: Second thickness T3: Third thickness

Figure 1: A three-dimensional appearance diagram of the level of the present invention. Figure 2: A three-dimensional exploded diagram of the level of the present invention. Figure 3: A three-dimensional exploded diagram of the level of the present invention from another perspective. Figure 4: A cross-sectional structural diagram of the level of the present invention. Figure 5: A partially enlarged cross-sectional structural diagram of the first concave portion of the level of the present invention. Figure 6: A partially enlarged cross-sectional structural diagram of the second concave portion of the level of the present invention. Figure 7: A cross-sectional structural diagram of the magnetic suction module of the level of the present invention. Figure 8: A cross-sectional structural diagram of the magnetic suction module of the level of the present invention from another perspective.

10: Level meter

20: Frame

22: First side panel

31: First mounting seat

33: Second mounting seat

Claims (9)

A level, comprising: A frame, the frame is provided with a bottom plate, a surface is provided on one side of the bottom plate adjacent to the outside of the frame, a first inner surface and a first recess adjacent to the first inner surface are provided on one side of the bottom plate adjacent to the inside of the frame, the distance from the first inner surface to the surface forms a first thickness, the distance from the inner periphery of the first recess to the surface forms a second thickness, and the second thickness is less than the first thickness; A magnetic suction module, the magnetic suction module can provide magnetic force and is provided in the first recess. A level as described in claim 1, wherein the ratio of the second thickness to the first thickness is less than 0.7. A level as described in claim 1, wherein a second inner surface is provided on a side of the base plate adjacent to the interior of the frame, the first recess is provided between the first inner surface and the second inner surface, and the first recess is adjacent to the second inner surface, and the distance from the second inner surface to the surface is equal to the first thickness. As described in claim 3, the magnetic module includes a first mounting base and a first magnetic member, the first mounting base is disposed in the first recess and combined with the frame, the first mounting base is provided with a first slot, the first magnetic member has ferromagnetism and is inserted into the first slot. A level as described in claim 4, wherein the opening of the first slot faces the base plate, one end of the first magnetic member directly contacts the inner periphery of the first recess, and one end of the first magnetic member opposite to the first recess rests against the bottom surface of the first slot. A level as described in claim 5, wherein the frame is provided with a first side panel connected to the base plate by an integrally formed structure, the first side panel is provided with a first side hole, and the first mounting seat passes through the first side hole in a direction parallel to the base plate and is inserted into the interior of the frame. A level as described in claim 6, wherein the frame is provided with a second side plate connected to the base plate by an integrally formed structure, the first side plate and the second side plate are arranged on opposite sides of the base plate, the second side plate is provided with a first positioning hole, the cross-sectional area of the first positioning hole is smaller than the cross-sectional area of the first side hole, and a first positioning flange is provided at one end of the first mounting seat adjacent to the second side plate, and the first positioning flange is inserted into the first positioning hole. A level as described in claim 7, wherein the first mounting base is provided with at least one first latching flange on a side opposite to the base plate, and the at least one first latching flange is capable of elastically deforming and abutting against an inner periphery of a side of the first side plate adjacent to the second side plate. A level as described in claim 8, wherein a third inner surface and a second recess adjacent to the third inner surface are provided on one side of the bottom plate adjacent to the interior of the frame, the second inner surface and the third inner surface are provided on opposite sides of the first inner surface, the second recess is provided between the first inner surface and the third inner surface, and the second recess is adjacent to the first inner surface, and the distance from the third inner surface to the surface is equal to The first thickness, the distance from the inner periphery of the second recess to the surface forms a third thickness, the ratio of the third thickness to the first thickness is less than 0.7, the first side plate is provided with a second side hole, the second side plate is provided with a second positioning hole, the cross-sectional area of the second positioning hole is smaller than the cross-sectional area of the second side hole, the magnetic module includes a second mounting seat and a second magnetic The second mounting seat passes through the second side hole in a direction parallel to the base plate and is arranged in the second recess and combined with the frame. The second mounting seat is provided with a second slot, and the opening of the second slot faces the base plate. The second magnetic member has ferromagnetism and is inserted into the second slot. One end of the second magnetic member directly contacts the inner periphery of the second recess, and the end of the second magnetic member opposite to the second recess abuts against the bottom surface of the second slot. A second positioning flange is provided at one end of the second mounting seat adjacent to the second side plate, and the second positioning flange is inserted into the second positioning hole. The second mounting seat is provided with at least one second latching flange on a side opposite to the base plate, and the at least one second latching flange can be elastically deformed and abut against the inner periphery of a side of the first side plate adjacent to the second side plate.

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