High-precision multifunctional measuring tape and use method thereof

Abstract

The invention relates to the field of measuring tapes, in particular to a high-precision multifunctional measuring tape and a use method thereof. The measuring tape and the using method thereof aim at solving the technical problems that in the prior art, the function is single, multiple auxiliary instruments need to be matched for use, and operation is very troublesome in the measurement process. A high-precision multifunctional measuring tape comprises a measuring tape shell, a measuring tape inner core, a measuring assembly, a magnet block, a brake assembly and an auxiliary function assembly. According to the invention, the magnet block is arranged on the side surface of the measuring tape, so that the measuring tape can be more firmly fixed on one point in the measuring process, the stability of the measuring tape during measurement is improved, deviation is prevented, manpower for fixing one point can be reduced, and the measuring efficiency is improved. The infrared distance measuring instrument used for long-distance or high-precision measurement and the gradienter used for calibrating the levelness of the plane are placed in the inner side cavity of the measuring assembly, after combination, the measuring tape is not only a length measuring tool, but also can be used as a tool for distance measurement and levelness detection, and the multifunctionality of the measuring tape is improved.

Description

Technical Field

[0001] The present invention relates to the field of tape measures, and particularly to a high-precision multi-functional tape measure and its using method. Background Art

[0002] A tape measure is a tool used to measure length. It is widely used in fields such as construction, manufacturing, home repair, and engineering survey. Workers need to pull out the tape to the required length to measure the target length. Due to its simple, practical, reliable, and accurate characteristics, the tape measure is one of the indispensable measuring tools in engineering and daily life.

[0003] However, the existing tape measures have a relatively simple structure and can only meet basic measurement work. Sometimes, workers need to carry a toolbox and use other auxiliary instruments together. When there is a need to measure a larger or farther distance, they may need to seek the help of colleagues. Moreover, in some sites with water accumulation or dust, it will stick to the tape measure, hindering data interpretation.

[0004] Therefore, there is an urgent need to design a high-precision multi-functional tape measure and its using method to solve the above technical problems. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a high-precision multi-functional tape measure and its using method, which aims to solve the technical problems of single function in the prior art, the need to use a variety of auxiliary instruments together, and very troublesome operation in measurement.

[0006] The technical solution of the present invention is: a high-precision multi-functional tape measure, which includes a tape measure housing, a tape measure inner core, a measurement component, a magnet block, a braking component, an auxiliary function component, a disassembly groove, a limit sliding groove, a limit slider, a positioning groove, a positioning block, a water leakage hole, and a cleaning component; the tape measure inner core is installed inside the tape measure housing; a disassembly groove is opened on the front side of the lower end of the tape measure housing; a measurement component is installed inside the disassembly groove; a magnet block is fixedly connected in the groove on the upper end face of the tape measure housing; a braking component for braking the movement of the tape measure inner core is installed at the lower end of the tape measure housing; an auxiliary function component is fixedly connected to the upper end of the tape measure housing; a cleaning component for cleaning the front and back sides when the tape measure inner core is wound is installed inside the outlet of the tape measure housing.

[0007] Preferably, the measurement component includes a front shell, a rear shell, a first cavity, an infrared rangefinder, a second cavity, and a level; the rear shell is installed at the four corners of the rear end of the front shell through bolts.

[0008] Preferably, a first cavity is arranged on the upper side of the inner cavity of the front shell and the rear shell; an infrared rangefinder is installed inside the first cavity; a second cavity is arranged on the lower side of the inner cavity of the front shell and the rear shell; a level is installed inside the second cavity.

[0009] Preferably, the braking assembly includes a gear, an elastic clamping block and a button; the gear is located at the axis position of the inner core of the tape measure; the elastic clamping block is installed at the upper end of the gear; the button is arranged at the upper end of the elastic clamping block.

[0010] Preferably, the auxiliary function assembly includes a storage cylinder A, a cylindrical drawer, a marker pen, a sealing head, a storage cylinder B and a multi-stage telescopic rod; the cylindrical drawer is slidably connected to the inner side of the storage cylinder A; the marker pen is placed inside the cylindrical drawer; the sealing head is fixedly connected to the front end of the cylindrical drawer; the sealing head is fitted and connected between the opening end of the storage cylinder A; the multi-stage telescopic rod is installed inside the storage cylinder B; the storage cylinder A and the storage cylinder B are respectively fixed on the left and right sides of the upper end of the tape measure housing.

[0011] Preferably, the cleaning assembly includes a bottom brush, an adjusting mechanism, a moving brush and a side groove; the moving brush is arranged directly above the bottom brush; the adjusting mechanism is installed at the upper end of the moving brush; the adjusting mechanism is located at the upper end of the outlet of the tape measure housing; a side groove is opened on the side of the outlet of the tape measure housing; the moving brush is slidably connected to the inner side of the side groove.

[0012] Preferably, a limiting slider is fixedly connected to the inside of the disassembly groove; a limiting chute is fixedly connected to the side of the measuring assembly; the cross sections of the limiting chute and the limiting slider both adopt a "T" - shaped structure; the limiting chute and the limiting slider are connected in a limiting sliding manner; positioning blocks are fixedly connected to the four corners at the upper end of the measuring assembly; positioning grooves are opened at the four corners at the inner bottom end of the positioning blocks; the positioning grooves and the positioning blocks are connected in a clamping manner.

[0013] Preferably, the tape measure housing is provided with water leakage holes.

[0014] A method for using a high - precision multi - functional tape measure, characterized by including the above - mentioned high - precision multi - functional tape measure, and the steps are as follows:

[0015] S1. When the staff is measuring, face the end of the tape measure housing with the magnet block towards the metal surface, directly attach the tape measure to the metal surface for positioning, and pull out the ruler controlled by the inner core of the tape measure in the usual way of using a tape measure for measurement. In this way, the magnet - block tape measure will be more firmly fixed at a point during the measurement process, which helps to increase the stability of the tape measure during measurement and prevent deviation, and can also reduce the manpower at a fixed point. It is very convenient and fast for one person to use the tape measure for measurement;

[0016] After the measurement is completed, the staff releases the measuring ruler, and the measuring ruler is retracted into the tape measure housing under the action of the inner core of the tape measure with a spring structure. When the staff presses the button, the elastic clamping block at the lower end can be driven to lift. The gear rotates along with the inner core of the tape measure. When the staff releases the hand, the elastic clamping block tilts downward to clamp the outer teeth of the gear for braking and locking;

[0017] In the disassembly groove at the lower end of the tape measure housing, a detachable measuring component is installed. In the inner cavity of the measuring component, an infrared rangefinder for long-distance or high-precision measurement and a level for calibrating the horizontal level are placed. After combination, the tape measure is not only a length measuring tool, but also can be used as a distance measuring and level detecting tool, improving the versatility of the tape measure and reducing the time cost of switching tools;

[0018] Disassembly method: Hold the front shell and the rear shell of the measuring component and slide downward forcefully. The downward force causes the positioning block at the upper end of the outer shell to be pulled out of the positioning groove of the disassembly groove. The measuring component slides downward along the restricted route of the limit sliding groove and the limit slider until the limit sliding groove of the measuring component disengages from the limit slider of the disassembly groove, and the measuring component is completely separated from the disassembly groove. During installation, just operate in the opposite direction;

[0019] S3. An auxiliary function component with two storage spaces is provided at the upper end of the tape measure. Inside the storage cylinder A and the storage cylinder B, a marker pen that can be pulled out and a multi-stage telescopic rod that can be extended are respectively provided. When the above accessories are needed, directly take out the marker pen from the drawn cylindrical drawer or pull out the multi-stage telescopic rod to point at higher or farther things, making the functional area of the tape measure more compact and making the work smoother and more convenient;

[0020] S4. When the surface of the tape measure is stained with dirt or other stains, the moving brush of the cleaning component can be lowered through the adjustment mechanism, so that the tape measure blade is clamped between the moving brush and the bottom brush. During the process of the tape measure blade being retracted, the front and back sides are quickly cleaned. The bristles of the moving brush and the bottom brush are pasted in the corresponding bases through Velcro and can be replaced through the side slots.

[0021] The beneficial effects of the present invention:

[0022] Compared with the traditional tape measure with a single function, the present invention is provided with magnet blocks on the side of the tape measure. The tape measure can be directly attached to the metal surface for positioning and measured in the usual way of using a tape measure. In this way, the magnet tape measure will be more firmly fixed at a point during the measurement process, which helps to increase the stability of the tape measure during measurement and prevent deviation. Moreover, it can reduce the manpower for fixing a point, and it is very convenient and fast for one person to use the tape measure for measurement. The measuring component that can be detached and used is installed through the disassembly groove. An infrared rangefinder for long-distance or high-precision measurement and a level for calibrating the horizontal degree of the plane are placed in the inner cavity of the measuring component. After combination, the tape measure is not only a length measuring tool, but also can be used as a distance measuring and level detecting tool, improving the versatility of the tape measure and reducing the time cost of switching tools. The auxiliary function component is provided with a retractable marker pen and an extendable multi-stage telescopic rod. The marker pen can be directly taken out from the drawn cylindrical drawer or the multi-stage telescopic rod can be pulled out to point at higher or farther things, making the functional area of the tape measure more compact and making the work smoother and more convenient. The cleaning component quickly cleans the front and back sides during the process of the tape piece of the tape measure being retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. shows a three-dimensional structural schematic diagram of the tape measure of the present invention and its usage method;

[0024] Figure 2 FIG. shows a disassembled structural schematic diagram of the tape measure of the present invention and its usage method;

[0025] Figure 3 FIG. shows another disassembled structural schematic diagram of the tape measure of the present invention and its usage method;

[0026] Figure 4 FIG. shows a schematic diagram of the usage method of the auxiliary function component of the tape measure of the present invention and its usage method;

[0027] Figure 5 FIG. shows another schematic diagram of the usage method of the auxiliary function component of the tape measure of the present invention and its usage method;

[0028] Figure 6 FIG. shows a disassembled internal schematic diagram of the measuring component of the tape measure of the present invention and its usage method;

[0029] Figure 7 FIG. shows an internal schematic diagram of the braking component of the tape measure of the present invention and its usage method.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. outer shell of tape measure; 2. inner core of tape measure; 3. measuring assembly; 301. front shell; 302. rear shell; 303. first cavity; 304. infrared rangefinder; 305. second cavity; 306. level; 4. magnet block; 5. brake assembly; 501. gear; 502. elastic block; 504. button; 6. auxiliary function assembly; 601. storage cylinder A; 602. cylindrical drawer; 603. marking pen; 604. sealing head; 605. storage cylinder B; 606. multi-stage telescopic stick; 7. disassembly groove; 8. limit slide groove; 9. limit slide block; 10. positioning groove; 11. positioning block; 12. water leakage hole; 13. cleaning assembly; 1301. bottom brush; 1302. adjustment mechanism; 1303. moving brush; 1304. side groove. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] See also Figure 1-2 The present invention provides an embodiment: a high-precision multifunctional tape measure, comprising a tape measure shell 1, a tape measure inner core 2, a measuring component 3, a magnet block 4, a brake component 5, an auxiliary function component 6, a disassembly groove 7, a limit slide groove 8, a limit slider 9, a positioning groove 10, a positioning block 11, a leaking hole 12, and a cleaning component 13; the tape measure inner core 2 is installed on the inner side of the tape measure shell 1; a disassembly groove 7 is opened on the front side of the lower end of the tape measure shell 1; the measuring component 3 is installed inside the disassembly groove 7; a magnet block 4 is fixedly connected in the groove on the upper end surface of the tape measure shell 1; a brake component 5 for braking the activity of the tape measure inner core 2 is installed at the lower end of the tape measure shell 1; An auxiliary function component 6 is fixedly connected to the end; a cleaning component 13 for cleaning the front and back sides of the tape core 2 when the tape is rolled up is installed on the inner side of the outlet of the tape measure housing 1; a leaking hole 12 is provided on the outer shell of the tape measure housing 1; a limit slider 9 is fixedly connected to the inner side of the disassembly groove 7; a limit slide groove 8 is fixedly connected to the side of the measuring component 3; the cross-sections of the limit slide groove 8 and the limit slider 9 are both of "T" shape structure; the limit slide groove 8 and the limit slider 9 are limitedly slidably connected; the four corners on the upper end of the measuring component 3 are fixedly connected to the positioning blocks 11; the four corners on the inner bottom of the positioning block 11 are provided with positioning grooves 10; the positioning groove 10 and the positioning block 11 are snap-fitted into connection.

[0033] See also Figure 3 In this embodiment, the cleaning component 13 includes a bottom brush 1301, an adjustment mechanism 1302, a movable brush 1303, and a side groove 1304; the movable brush 1303 is arranged directly above the bottom brush 1301; the adjustment mechanism 1302 is installed on the upper end of the movable brush 1303; the adjustment mechanism 1302 is located at the upper end of the outlet of the tape measure housing 1; a side groove 1304 is opened on the side of the outlet of the tape measure housing 1; and the movable brush 1303 is slidably connected to the inner side of the side groove 1304.

[0034] Please refer to Figure 4 and 5 In this embodiment, the auxiliary function component 6 includes a storage cylinder A601, a cylindrical drawer 602, a marker pen 603, a sealing head 604, a storage cylinder B605 and a multi-stage telescopic rod 606; a cylindrical drawer 602 is slidably connected to the inside of the storage cylinder A601; a marker pen 603 is placed inside the cylindrical drawer 602; a sealing head 604 is fixedly connected to the front end of the cylindrical drawer 602; the sealing head 604 is fitted and connected with the opening end of the storage cylinder A601; a multi-stage telescopic rod 606 is installed inside the storage cylinder B605; the storage cylinder A601 and the storage cylinder B605 are respectively fixed to the left and right sides of the upper end of the tape measure housing 1.

[0035] Please refer to Figure 6 In this embodiment, the measuring component 3 includes a front shell 301, a rear shell 302, a first cavity 303, an infrared rangefinder 304, a second cavity 305 and a level 306; the rear shell 302 is installed at the four corners of the rear end of the front shell 301 through bolts, and a first cavity 303 is provided on the upper side of the inner cavity of the front shell 301 and the rear shell 302; an infrared rangefinder 304 is installed inside the first cavity 303; a second cavity 305 is provided on the lower side of the inner cavity of the front shell 301 and the rear shell 302; a level 306 is installed inside the second cavity 305.

[0036] Please refer to Figure 7 In this embodiment, the braking component 5 includes a gear 501, an elastic clamping block 502 and a button 504; the gear 501 is located at the axial center position of the tape measure inner core 2; an elastic clamping block 502 is installed at the upper end of the gear 501; a button 504 is provided at the upper end of the elastic clamping block 502.

[0037] The operation steps during the working process are as follows:

[0038] S1. When the staff is measuring, the end of the tape measure housing 1 with the magnet block 4 is facing the metal surface, and the tape measure is directly attached to the metal surface for positioning. According to the usual way of using a tape measure, the ruler controlled by the tape measure inner core 2 is pulled out for measurement. In this way, the tape measure with the magnet block 4 will be more firmly fixed at a point during the measurement process, which helps to increase the stability of the tape measure during measurement and prevent deviation, and can also reduce the manpower for one fixing point. It is very convenient and fast for one person to use the tape measure for measurement;

[0039] After the measurement is completed, the staff releases the measuring ruler, and the measuring ruler is retracted into the tape measure housing 1 under the action of the tape measure inner core 2 with a spring structure. When the staff presses the button 504, the lower elastic clamping block 502 can be driven to lift, and the gear 501 rotates with the tape measure inner core 2. When the staff releases the hand, the elastic clamping block 502 tilts downward to clamp the external teeth of the gear 501 for braking and locking;

[0040] S2. A detachable measuring assembly 3 is installed in the disassembly slot 7 at the lower end of the measuring tape housing 1. An infrared rangefinder 304 for long-distance or high-precision measurement and a level 306 for calibrating the horizontality of a plane are placed in the inner cavity of the measuring assembly 3. After being combined, the measuring tape is not only a tool for measuring length, but also a tool for measuring distance and detecting horizontality, which improves the versatility of the measuring tape and reduces the time cost of switching tools.

[0041] Disassembly method: Hold the front shell 301 and the rear shell 302 of the measuring component 3, and slide downward with force. The downward force causes the positioning block 11 at the upper end of the outer shell to be pulled out of the positioning slot 10 of the disassembly slot 7. The measuring component 3 slides downward along the restricted route of the limiting slide slot 8 and the limiting slide block 9 until the limiting slide slot 8 of the measuring component 3 is separated from the limiting slide block 9 of the disassembly slot 7. The measuring component 3 is completely separated from the disassembly slot 7. When installing, the direction operation can be performed;

[0042] S3. An auxiliary functional component 6 with two storage spaces is provided at the upper end of the measuring tape. A drawable marking pen 603 and an extendable multi-stage telescopic stick 606 are provided inside the storage cylinder A601 and the storage cylinder B605, respectively. When the above accessories are needed, the marking pen 603 can be directly taken out from the drawn cylindrical drawer 602 or the multi-stage telescopic stick 606 can be pulled out to point at higher or farther objects, making the measuring tape functional area more compact and making the work smoother and more convenient.

[0043] S4. When there is dirt or other stains on the surface of the measuring tape, the movable brush 1303 of the cleaning assembly 13 can be lowered through the adjustment mechanism 1302 so that the measuring tape is clamped between the movable brush 1303 and the bottom brush 1301. During the process of recovering the measuring tape, the front and back sides can be quickly cleaned. The bristles of the movable brush 1303 and the bottom brush 1301 are attached to the corresponding bases through Velcro and can be replaced through the side groove 1304.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A high-precision multifunctional tape measure, comprising a tape measure housing (1); characterized in that: It also includes a tape measure inner core (2), a measuring component (3), a magnet block (4), a braking component (5), an auxiliary function component (6), a disassembly groove (7), a limit sliding groove (8), a limit sliding block (9), a positioning groove (10), a positioning block (11), a water leakage hole (12), and a cleaning component (13); the tape measure inner core (2) is installed inside the tape measure housing (1); a disassembly groove (7) is opened on the front side near the lower end of the tape measure housing (1); the measuring component (3) is installed inside the disassembly groove (7); the magnet block (4) is fixedly connected inside the groove on the upper end surface of the tape measure housing (1); the braking component (5) for braking the movement of the tape measure inner core (2) is installed at the lower end of the tape measure housing (1); the auxiliary function component (6) is fixedly connected to the upper end of the tape measure housing (1); the cleaning component (13) for cleaning the front and back sides when the tape measure inner core (2) is wound is installed inside the outlet of the tape measure housing (1).

2. The high-precision multi-functional tape measure according to claim 1, characterized in that: The measuring component (3) includes a front shell (301), a rear shell (302), a first cavity (303), an infrared rangefinder (304), a second cavity (305), and a level (306); the rear shell (302) is installed at the four corners at the rear end of the front shell (301) through bolts.

3. The high-precision multi-functional tape measure according to claim 2, characterized in that: A first cavity (303) is arranged on the upper side of the inner cavity of the front shell (301) and the rear shell (302); the infrared rangefinder (304) is installed inside the first cavity (303); a second cavity (305) is arranged on the lower side of the inner cavity of the front shell (301) and the rear shell (302); the level (306) is installed inside the second cavity (305).

4. A high-precision multi-functional tape measure according to claim 1, characterized in that: The braking component (5) includes a gear (501), an elastic clamping block (502), and a button (504); the gear (501) is located at the axial center position of the tape measure inner core (2); the elastic clamping block (502) is installed at the upper end of the gear (501); the button (504) is arranged at the upper end of the elastic clamping block (502).

5. A highly precise multi-functional tape measure according to claim 1, characterized in that: The auxiliary function component (6) includes a storage cylinder A (601), a cylindrical drawer (602), a marker pen (603), a sealing head (604), a storage cylinder B (605), and a multi-stage telescopic rod (606); the cylindrical drawer (602) is slidably connected inside the storage cylinder A (601); the marker pen (603) is placed inside the cylindrical drawer (602); the sealing head (604) is fixedly connected to the front end of the cylindrical drawer (602); the sealing head (604) is fitted and connected between the opening end of the storage cylinder A (601); the multi-stage telescopic rod (606) is installed inside the storage cylinder B (605); the storage cylinder A (601) and the storage cylinder B (605) are respectively fixed on the left and right sides of the upper end of the tape measure housing (1).

6. The high-precision multi-functional tape measure according to claim 1, characterized in that: The cleaning assembly (13) includes a bottom brush (1301), an adjustment mechanism (1302), a movable brush (1303), and a side groove (1304); a movable brush (1303) is arranged directly above the bottom brush (1301); an adjustment mechanism (1302) is installed at the upper end of the movable brush (1303); the adjustment mechanism (1302) is located at the upper end of the outlet of the tape measure housing (1); a side groove (1304) is formed on the side of the outlet of the tape measure housing (1); the movable brush (1303) is slidably connected inside the side groove (1304).

7. A high-precision multi-functional tape measure according to claim 1, characterized in that: A limit slider (9) is fixedly connected inside the disassembly groove (7); a limit chute (8) is fixedly connected to the side of the measuring assembly (3); the cross-sections of the limit chute (8) and the limit slider (9) both adopt a "T" - shaped structure; the limit chute (8) and the limit slider (9) are slidably connected with each other in a limiting manner; positioning blocks (11) are fixedly connected to the four corners at the upper end of the measuring assembly (3); positioning grooves (10) are formed at the four corners of the inner bottom end of the positioning blocks (11); the positioning grooves (10) and the positioning blocks (11) are snap - connected to each other.

8. The high-precision multi-functional tape measure according to claim 1, characterized in that: Leakage holes (12) are formed in the housing of the tape measure housing (1).

9. A method for using a high-precision multi-functional tape measure, characterized in that It includes a high - precision multi - functional tape measure according to claims 1 - 8, and the steps are as follows: S1. When a staff member is measuring, the end of the tape measure housing (1) with the magnet block (4) is faced towards the metal surface, and the tape measure is directly attached to the metal surface for positioning. According to the usual way of using a tape measure, the ruler controlled by the tape measure inner core (2) is pulled out for measurement. In this way, the tape measure with the magnet block (4) will be more firmly fixed at a point during the measurement process, which helps to increase the stability of the tape measure during measurement and prevent deviation, and can also reduce the manpower for one fixed point. It is very convenient and fast for one person to use the tape measure for measurement; After the measurement is completed, the staff member releases the measuring ruler, and the measuring ruler is retracted into the tape measure housing (1) under the action of the tape measure inner core (2) with a spring structure. When the staff member presses the button (504), the lower elastic latch (502) can be driven to lift upwards, and the gear (501) rotates along with the tape measure inner core (2). When the staff member releases the hand, the elastic latch (502) inclines downwards and catches the outer teeth of the gear (501) for braking and locking; S2. In the disassembly groove (7) at the lower end of the tape measure housing (1), a detachable measuring assembly (3) is installed. An infrared rangefinder (304) for long - distance or high - precision measurement and a level (306) for calibrating the horizontal degree of the plane are placed in the inner cavity of the measuring assembly (3). After combination, the tape measure is not only a length - measuring tool, but also can be used as a distance - measuring and level - detecting tool, improving the versatility of the tape measure and reducing the time cost of switching tools; The disassembly method is to hold the front shell (301) and the rear shell (302) of the measuring component (3) and slide them downward with force. The downward force causes the positioning block (11) at the upper end of the outer shell to be pulled out of the positioning groove (10) of the disassembly groove (7). The measuring component (3) slides downward along the restricted route of the limiting slide groove (8) and the limiting slide block (9) until the limiting slide groove (8) of the measuring component (3) is separated from the limiting slide block (9) of the disassembly groove (7). The measuring component (3) is completely separated from the disassembly groove (7). When installing, the direction operation can be performed. S3. An auxiliary functional component (6) with two storage spaces is provided at the upper end of the measuring tape. A retractable marking pen (603) and an extendable multi-stage telescopic stick (606) are provided on the inner sides of the storage cylinder A (601) and the storage cylinder B (605), respectively. When the above accessories are needed, the marking pen (603) can be directly taken out from the retracted cylindrical drawer (602) or the multi-stage telescopic stick (606) can be pulled out to point at higher or farther objects, so that the functional area of the measuring tape is more compact, making the work smoother and more convenient. S4. When the surface of the measuring tape is covered with dirt or other stains, the movable brush (1303) of the cleaning assembly (13) can be lowered through the adjustment mechanism (1302) so that the measuring tape is clamped between the movable brush (1303) and the bottom brush (1301). During the process of retrieving the measuring tape, the front and back sides can be quickly cleaned. The bristles of the movable brush (1303) and the bottom brush (1301) are attached to the corresponding bases through Velcro and can be replaced through the side groove (1304).

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