Measuring tape

Abstract

The invention discloses a measuring tape, and relates to the field of measuring tapes, the measuring tape comprises a shell and a storage bin arranged on the left side of the shell, and a tape is arranged in the shell and the storage bin; a fixing plate is mounted on the inner wall of the storage bin, a convenient use mechanism is arranged on the outer side of the fixing plate, the convenient use mechanism comprises a round rod, and the middle end of the round rod is arranged in the fixing plate. According to the measuring tape, the rotating shafts are arranged at the front end and the rear end of the transverse plate, the buffer springs in the sleeves at the lower ends of the rotating shafts apply own elastic force to the moving rods, the moving rods are pushed by the buffer springs to downwards push the flat plate, and the flat plate drives the supporting batten to apply pressure to the tape body; as the tape is pulled out, pressure can be stably applied to the tape on the outer side of the storage bin, the stability of the tape during measurement can be improved, the situation that the measurement precision is affected by bending is avoided, and the detection precision is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tape measures, and specifically to a tape measure. Background Art

[0002] A tape measure is a tool used to measure length, which is widely used in life and usually consists of a measuring tape and a housing.

[0003] In the prior art, when using a tape measure, when the front end of the toothed tape is buckled to the end of the product to be measured, it is easy to become loose due to the stretching caused by the movement of the user, and the user needs to align it multiple times, which is rather cumbersome and not conducive to the use of the user.

[0004] To overcome the above deficiencies, a Chinese patent of the prior art (application number: 201220309396.4) discloses a tape measure. An opening is provided on the housing, and the tape measure can extend out of the housing along the direction defined by the opening. A braking device for the tape measure relative to the opening is provided at the opening. A stop device that forms a stop fit with the housing is further provided at the end of the tape measure exposed outside the housing. A marking device is also provided on the housing, and this marking device is located directly below the opening of the housing. Generally, the size of a tape measure starts from the end exposed outside the housing to the opening. Therefore, the present utility model sets the marking device directly below the opening, so that the tape measure can be directly marked through the marking device after measurement, without the need to cooperate with a marking pen or the like, which is simple and convenient.

[0005] To overcome the above deficiencies, a Chinese patent of the prior art (application number: 200820083622.5) discloses a tape measure. The tape measure housing is formed by the butted connection of a left housing and a right housing. Moreover, the left housing and the right housing use stainless steel shell covers as inserts and are respectively inlaid and connected with the left injection-molded housing and the right injection-molded housing, and at least the main body of the stainless steel shell cover is exposed on the outer surface of the injection-molded housing, which combines the advantages of a plastic housing and a metal housing to achieve the purpose of being beautiful, practical and easy to manufacture.

[0006] Although the prior art can overcome the above-mentioned deficiencies, there are still other problems in its operation process. For example, when the tape measure is used on a construction site, dust and impurities are diffused in the air. As the toothed tape inside the tape measure is exposed to the outside, it is easy to adhere to some debris and impurities, which is likely to cause scratches on the internal toothed tape during winding. And when the length of the product to be measured by the tape measure is relatively long, it is easy to fold and bend, which is rather inconvenient for the user to measure. Summary of the Invention

[0007] The object of the present invention is to provide a tape measure to solve the problems raised in the above-mentioned background technology. When the tape measure is used on a construction site, dust and impurities diffuse into the air. As the toothed belt inside the tape measure is exposed to the outside, it is easy to stick to some debris and impurities. When winding up, it is easy to scratch the toothed belt inside. Moreover, when the length of the product to be measured by the tape measure is relatively long, it is easy to fold and bend, which is rather inconvenient for the user to measure.

[0008] To achieve the above object, the present invention provides the following technical solution: A tape measure, including a housing and a storage bin provided on the left side of the housing, and a tape is provided inside the housing and the storage bin; a fixing plate is installed on the inner wall of the storage bin, and a convenient use mechanism is provided on the outside of the fixing plate. Moreover, the convenient use mechanism includes a round rod, and the middle end of the round rod is arranged inside the fixing plate; a cross plate is provided on the left side of the storage bin, and a support and anti-warping mechanism is provided on the inner side of the cross plate. Moreover, the support and anti-warping mechanism includes a rotating shaft, and the inner side of the rotating shaft is rotatably connected to the inner side of the cross plate; a vertical rod is installed on the inner wall of the storage bin, and a self-adjusting cleaning mechanism is provided at the upper end of the vertical rod. Moreover, the self-adjusting cleaning mechanism includes a cleaning brush plate, and the cleaning brush plate is sleeved on the surface of the vertical rod.

[0009] Furthermore, the convenient use mechanism further includes a dial block, and the middle end of the dial block is slidably connected to the storage bin. Moreover, the round rod is slidably connected to the fixing plate, and a pressing plate is fixedly installed at the lower end of the round rod. A positioning shaft is provided in the middle of the housing, and a scroll spring is provided on the surface of the positioning shaft. Moreover, a cylinder is installed on the outside of the scroll spring, and a mounting plate is fixedly installed on the inner wall of the housing. The cylinder is slidably connected between the mounting plate, and a ball is provided between the cylinder and the mounting plate. Moreover, the tape is wound around the surface of the cylinder.

[0010] Furthermore, the upper end of the round rod is spherical in shape, and the upper end of the round rod corresponds to the inclined part at the lower end of the dial block. Moreover, a return spring is sleeved on the surface of the round rod, and the upper and lower ends of the return spring are arranged between the fixing plate and the pressing plate. A non-slip pad is fixedly installed at the lower end of the pressing plate, and the lower end of the pressing plate corresponds to the surface of the tape. A support block is fixedly installed inside the storage bin, and the support block corresponds to the pressing plate.

[0011] Furthermore, a hanging plate is provided on the left side of the tape, and an adsorption magnet is fixedly installed on the inner wall of the right side of the hanging plate. Moreover, a positioning plate is fixedly installed on the left side of the hanging plate, and positioning elastic pieces are fixedly installed on both the right side of the positioning plate and the left side of the hanging plate.

[0012] Furthermore, the support and anti-warping mechanism further includes a sleeve, and the upper end of the sleeve is fixedly installed at the lower end of the rotating shaft. Moreover, a moving rod is sleeved inside the sleeve, and a flat plate is rotatably installed at the lower end of the moving rod. A support strip plate is fixedly installed on the inner side of the flat plate, and the lower end of the support strip plate is attached to the surface of the tape.

[0013] Further, a buffer spring is arranged inside the sleeve, and the upper and lower ends of the buffer spring are installed between the moving rod and the sleeve.

[0014] Further, a damping rod is fixedly installed at the lower end of the rotating shaft, and the lower end of the damping rod is installed at the upper end of the flat plate.

[0015] Further, the self-adjusting cleaning mechanism further includes a sliding rod, and the left and right sides of the sliding rod are fixedly installed inside the tape, and a movable plate is sleeved on the surface of the sliding rod, and the movable plate is connected to the sleeve through a traction rope.

[0016] Further, an auxiliary spring is sleeved on the surface of the sliding rod, and the left and right ends of the auxiliary spring are arranged between the storage bin and the movable plate.

[0017] Further, a pressure spring is sleeved on the surface of the vertical rod, and the upper and lower ends of the pressure spring are installed between the cleaning brush plate and the storage bin, and an inclined block is arranged at the upper end of the cleaning brush plate, and the inclined block is arranged corresponding to the movable plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Rotating shafts are arranged at the front and rear ends of the cross plate. The buffer spring inside the sleeve at the lower end of the rotating shaft exerts its own elastic force on the moving rod. The moving rod is pushed downward by the buffer spring to push the flat plate downward. The flat plate drives the support strip plate to exert pressure on the tape. With the setting of the damping rod, it can avoid the reciprocating vibration of the buffer spring. In this way, as the tape is pulled out, a stable pressure can be exerted on the tape outside the storage bin, which can improve the stability of the tape during measurement, avoid bending and affecting the measurement accuracy, and further improve the detection accuracy.

[0019] 2. During use, a cylinder is arranged through the mounting plate on the inner side of the shell. The scroll spring inside the cylinder is connected to the positioning shaft. So when pulling the tape, the tape drives the wound cylinder to rotate. When the cylinder rotates, the friction is reduced through the ball, which can make the winding and stretching of the tape measure easier and more convenient for the user to use, simple and labor-saving; Further, when dragging the tape for measurement, by pulling the hanging plate at the front end of the tape and buckling the hanging plate on the surface of the object to be measured. If the object is metal, it can be adsorbed on the object through the adsorption magnet, which can provide more stable positioning. At the same time, if a small object needs to be measured, the positioning plate can be embedded so that the positioning elastic piece clamps it, thereby further improving the fixing effect and avoiding the loosening of the end of the tape during measurement, which requires the user to operate repeatedly and is more convenient to use; Furthermore, when the tape measure needs to be fixed and stopped from shrinking, the shift block is moved so that it slides along the inclined part of the storage bin. At this time, the shift block slides and squeezes the round rod on the inner side of the fixed plate. The round rod is squeezed and moves downward, and the round rod drives the pressure plate downward to press and contact the tape measure, and stretch the reset spring. The friction between the pressure plate and the tape measure is increased by the anti-slip pad at the bottom of the pressure plate. The tape measure is fixed with the support of the support block at the bottom, so as to facilitate the staff to operate and adjust the length of the tape measure. Fixing it can more conveniently read the data measured by the tape measure.

[0020] 3. When in use, as the tape is stretched, the supporting strip is driven to move to the left, and the supporting strip moves to the left to pull the traction rope, which is pulled to pull the movable plate to the left, and the movable plate moves to the left along the slide bar to squeeze the auxiliary spring, so that the auxiliary spring can push the movable plate to the right to squeeze the inclined block, and the inclined block is squeezed downward to push the cleaning brush plate, so that the cleaning brush plate fits the tape closely downward, slowing down the winding speed of the tape while cleaning the tape, avoiding the tape carrying dust and impurities when winding up, and improving the practicality of the tape measure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from above.

[0023] Figure 3 It is a schematic diagram of the front cross-sectional three-dimensional structure of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the shell body of the present invention in a side section.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the hanging plate of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the sleeve of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the sleeve in front view of the present invention.

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the large three-dimensional structure at A in the middle.

[0029] Figure 9 It is a schematic diagram of the traction rope structure of the present invention.

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the inclined block of the present invention.

[0031] In the figure: 1. housing; 2. storage bin; 3. tape; 4. mounting plate; 5. positioning shaft; 6. cylinder; 7. scroll spring; 8. ball; 9. hanging plate; 10. adsorption magnet; 11. positioning plate; 12. positioning elastic piece; 13. fixing plate; 14. round rod; 15. pressing plate; 16. return spring; 17. dial block; 18. support block; 19. cross plate; 20. rotating shaft; 21. sleeve; 22. moving rod; 23. flat plate; 24. support strip plate; 25. damping rod; 26. buffer spring; 27. traction rope; 28. movable plate; 29. sliding rod; 30. auxiliary spring; 31. vertical rod; 32. cleaning brush plate; 33. pressure spring; 34. inclined block. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Embodiment 1: As Figures 1-5 shown in the technical solution, a tape measure, in order to solve the problem, discloses: a housing 1 and a storage bin 2 provided on the left side of the housing 1, and a tape 3 is provided inside the housing 1 and the storage bin 2; a fixing plate 13 is installed on the inner wall of the storage bin 2, and a convenient use mechanism is provided outside the fixing plate 13, and the convenient use mechanism includes a round rod 14, and the middle end of the round rod 14 is arranged inside the fixing plate 13. The convenient use mechanism also includes a dial block 17, and the middle end of the dial block 17 is slidably connected to the storage bin 2, and the round rod 14 is slidably connected to the fixing plate 13. Moreover, a pressing plate 15 is fixedly installed at the lower end of the round rod 14. A positioning shaft 5 is arranged in the middle of the housing 1, and a scroll spring 7 is arranged on the surface of the positioning shaft 5. Moreover, a cylinder 6 is installed outside the scroll spring 7. An installation plate 4 is fixedly installed on the inner wall of the housing 1, and the installation plate 4 is slidably connected to the cylinder 6. Moreover, a ball 8 is arranged between the cylinder 6 and the installation plate 4, and the tape 3 is wound around the surface of the cylinder 6. The upper end of the round rod 14 is spherical, and the upper end of the round rod 14 corresponds to the inclined part at the lower end of the dial block 17. Moreover, a return spring 16 is sleeved on the surface of the round rod 14, and the upper and lower ends of the return spring 16 are arranged between the fixing plate 13 and the pressing plate 15. A non-slip pad is fixedly installed at the lower end of the pressing plate 15, and the lower end of the pressing plate 15 is correspondingly arranged with the surface of the tape 3. A support block 18 is fixedly installed inside the storage bin 2, and the support block 18 corresponds to the pressing plate 15. A hanging plate 9 is arranged on the left side of the tape 3, and an adsorption magnet 10 is fixedly installed on the inner wall of the right side of the hanging plate 9. Moreover, a positioning plate 11 is fixedly installed on the left side of the hanging plate 9, and positioning elastic pieces 12 are fixedly installed on the right side of the positioning plate 11 and the left side of the hanging plate 9.

[0034] When in use, a cylinder 6 is arranged through the mounting plate 4 on the inner side of the shell 1, and the vortex spring 7 inside the cylinder 6 is connected to the positioning shaft 5. Therefore, when the ruler tape 3 is pulled, the ruler tape 3 drives the wound cylinder 6 to rotate. When the cylinder 6 rotates, the friction force is reduced by the ball 8, which can make the winding and stretching of the measuring tape easier for the user to use, simple and labor-saving. At the same time, when the ruler tape 3 is pulled for measurement, the hanging plate 9 at the front end of the ruler tape 3 is pulled to buckle the hanging plate 9 on the surface of the object to be measured. If the object is metal, it can be adsorbed on the object through the adsorption magnet 10, which can provide more stable positioning. At the same time, if a small object needs to be measured, the positioning plate 11 can be embedded so that the positioning spring 12 can clamp it, thereby further improving The fixing effect prevents the end of the tape 3 from loosening during measurement, requiring the user to operate repeatedly, and is more convenient to use. When the tape 3 needs to be fixed and stopped from shrinking, the shift block 17 is shifted to make the shift block 17 slide along the inclined part of the storage bin 2. At this time, the shift block 17 slides and squeezes the round rod 14 on the inner side of the fixing plate 13, and the round rod 14 is squeezed and moves downward. The round rod 14 drives the pressure plate 15 downward to press and contact the tape 3, and stretches the reset spring 16, and increases the friction between the pressure plate 15 and the tape 3 through the anti-slip pad at the bottom of the pressure plate 15. With the support of the support block 18 at the bottom, the tape 3 is fixed, which is convenient for the staff to operate and adjust the length of the tape 3. Fixing it can more conveniently read the data measured by the tape measure.

[0035] Embodiment 2: Figures 1-8 The technical solution shown in the embodiment is based on the first embodiment. In order to solve the problem that the tape measure is easy to bend when measuring a long object, the following is disclosed: a horizontal plate 19 is arranged on the left side of the storage bin 2, and a support anti-distortion mechanism is arranged on the inner side of the horizontal plate 19, and the support anti-distortion mechanism includes a rotating shaft 20, and the inner side of the rotating shaft 20 is rotatably connected to the inner side of the horizontal plate 19, the support anti-distortion mechanism also includes a sleeve 21, and the upper end of the sleeve 21 is fixedly mounted on the lower end of the rotating shaft 20, and a moving rod 22 is sleeved inside the sleeve 21, and a flat plate 23 is rotatably mounted on the lower end of the moving rod 22, a supporting strip 24 is fixedly mounted on the inner side of the flat plate 23, and the lower end of the supporting strip 24 is in contact with the surface of the tape 3, a buffer spring 26 is arranged inside the sleeve 21, and the upper and lower ends of the buffer spring 26 are mounted between the moving rod 22 and the sleeve 21, a damping rod 25 is fixedly mounted on the lower end of the rotating shaft 20, and the lower end of the damping rod 25 is mounted on the upper end of the flat plate 23.

[0036] Rotating shafts 20 are provided at the front and rear ends of the cross plate 19. The buffer spring 26 inside the sleeve 21 at the lower end of the rotating shaft 20 exerts its own elastic force on the moving rod 22. The moving rod 22 is pushed downward by the buffer spring 26 to push the flat plate 23 downward. The flat plate 23 drives the support strip plate 24 to exert pressure on the tape 3. With the arrangement of the damping rod 25, it is possible to prevent the buffer spring 26 from vibrating reciprocally. In this way, as the tape 3 is pulled out, a stable pressure can be exerted on the tape 3 outside the storage bin 2, which can improve the stability of the tape 3 during measurement, avoid bending and affecting the measurement accuracy, and further improve the detection accuracy.

[0037] Embodiment 3: As Figures 1-10 shown in this technical solution, on the basis of Embodiment 2, in order to solve the problem that the pressure cannot be adjusted adaptively during cleaning, it is disclosed that: a vertical rod 31 is installed on the inner wall of the storage bin 2, and a self-adjusting cleaning mechanism is provided at the upper end of the vertical rod 31. The self-adjusting cleaning mechanism includes a cleaning brush plate 32, and the cleaning brush plate 32 is sleeved on the surface of the vertical rod 31. The self-adjusting cleaning mechanism further includes a sliding rod 29, and the left and right sides of the sliding rod 29 are fixedly installed inside the tape 3. A movable plate 28 is sleeved on the surface of the sliding rod 29, and the movable plate 28 is connected to the sleeve 21 through a traction rope 27. An auxiliary spring 30 is sleeved on the surface of the sliding rod 29, and the left and right ends of the auxiliary spring 30 are arranged between the storage bin 2 and the movable plate 28. A pressure spring 33 is sleeved on the surface of the vertical rod 31, and the upper and lower ends of the pressure spring 33 are installed between the cleaning brush plate 32 and the storage bin 2. An inclined block 34 is provided at the upper end of the cleaning brush plate 32, and the inclined block 34 is arranged corresponding to the movable plate 28.

[0038] During use, as the tape 3 is stretched, it drives the support strip plate 24 to move to the left. The support strip plate 24 moves to the left and pulls the traction rope 27. The traction rope 27 is pulled to drag the movable plate 28 to the left. The movable plate 28 moves to the left and compresses the auxiliary spring 30 along the sliding rod 29. At this time, the cleaning brush plate 32 stops being compressed, and the cleaning brush plate 32 rises under the action of the pressure spring 33 on the surface of the vertical rod 31, reducing the pressure on the tape 3. On the contrary, when the tape 3 is retracted, the tape 3 is retracted to the right, and the sleeve 21 releases the pulling of the traction rope 27, so that the auxiliary spring 30 can push the movable plate 28 to the right to squeeze the inclined block 34. The inclined block 34 is squeezed and pushes the cleaning brush plate 32 downward, so that the cleaning brush plate 32 closely adheres to the tape 3 downward, cleaning the tape 3 while slowing down the retraction speed of the tape 3, avoiding the tape 3 carrying dust and impurities during retraction, and improving the practicability of the tape measure.

[0039] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tape measure, comprising a housing (1) and a storage bin (2) provided on the left side of the housing (1), and a tape (3) is provided inside the housing (1) and the storage bin (2); It is characterized in that: A fixing plate (13) is installed on the inner wall of the storage bin (2), and a convenient use mechanism is provided on the outer side of the fixing plate (13), and the convenient use mechanism includes a round rod (14), and the middle end of the round rod (14) is arranged inside the fixing plate (13); A cross plate (19) is provided on the left side of the storage bin (2), and a support and anti - skew mechanism is provided on the inner side of the cross plate (19), and the support and anti - skew mechanism includes a rotating shaft (20), and the inner side of the rotating shaft (20) is rotatably connected to the inner side of the cross plate (19); A vertical rod (31) is installed on the inner wall of the storage bin (2), and a self - adjusting cleaning mechanism is provided at the upper end of the vertical rod (31), and the self - adjusting cleaning mechanism includes a cleaning brush plate (32), and the cleaning brush plate (32) is sleeved on the surface of the vertical rod (31).

2. The tape measure according to claim 1, characterized in that: The convenient use mechanism further includes a dial block (17), and the middle end of the dial block (17) is slidably connected to the storage bin (2), and the round rod (14) is slidably connected to the fixing plate (13), and a pressing plate (15) is fixedly installed at the lower end of the round rod (14). A positioning shaft (5) is arranged in the middle of the housing (1), and a scroll spring (7) is arranged on the surface of the positioning shaft (5), and a cylinder (6) is installed on the outer side of the scroll spring (7). An installation plate (4) is fixedly installed on the inner wall of the housing (1), and the cylinder (6) is slidably connected to the installation plate (4), and a ball (8) is arranged between the cylinder (6) and the installation plate (4), and the tape (3) is wound on the surface of the cylinder (6).

3. A tape measure according to claim 2, characterized in that: The upper end of the round rod (14) is spherical, and the upper end of the round rod (14) corresponds to the inclined part at the lower end of the dial block (17), and a return spring (16) is sleeved on the surface of the round rod (14), and the upper and lower ends of the return spring (16) are arranged between the fixing plate (13) and the pressing plate (15). An anti - slip pad is fixedly installed at the lower end of the pressing plate (15), and the lower end of the pressing plate (15) corresponds to the surface of the tape (3). A support block (18) is fixedly installed inside the storage bin (2), and the support block (18) corresponds to the pressing plate (15).

4. A tape measure according to claim 3, characterized in that: A hanging plate (9) is provided on the left side of the tape (3), and an adsorption magnet (10) is fixedly installed on the inner wall of the right side of the hanging plate (9), and a positioning plate (11) is fixedly installed on the left side of the hanging plate (9), and positioning elastic pieces (12) are fixedly installed on both the right side of the positioning plate (11) and the left side of the hanging plate (9).

5. A tape measure according to claim 1, characterized in that: The support and anti - skew mechanism further includes a sleeve (21), and the upper end of the sleeve (21) is fixedly installed at the lower end of the rotating shaft (20), and a moving rod (22) is sleeved inside the sleeve (21), and a flat plate (23) is rotatably installed at the lower end of the moving rod (22). A support strip plate (24) is fixedly installed on the inner side of the flat plate (23), and the lower end of the support strip plate (24) is attached to the surface of the tape (3).

6. A tape measure according to claim 5, characterized in that: A buffer spring (26) is arranged inside the sleeve (21), and the upper and lower ends of the buffer spring (26) are installed between the moving rod (22) and the sleeve (21).

7. A tape measure according to claim 6, characterized in that: A damping rod (25) is fixedly installed at the lower end of the rotating shaft (20), and the lower end of the damping rod (25) is installed at the upper end of the flat plate (23).

8. A tape measure according to claim 1, characterized in that: The self-adjusting cleaning mechanism further includes a sliding rod (29), and the left and right sides of the sliding rod (29) are fixedly installed inside the tape (3). A movable plate (28) is sleeved on the surface of the sliding rod (29), and the movable plate (28) is connected to the sleeve (21) through a traction rope (27).

9. A tape measure according to claim 8, characterized in that: A auxiliary spring (30) is sleeved on the surface of the sliding rod (29), and the left and right ends of the auxiliary spring (30) are arranged between the storage bin (2) and the movable plate (28).

10. A tape measure according to claim 9, characterized in that: A pressure spring (33) is sleeved on the surface of the vertical rod (31), and the upper and lower ends of the pressure spring (33) are installed between the cleaning brush plate (32) and the storage bin (2). An inclined block (34) is arranged at the upper end of the cleaning brush plate (32), and the inclined block (34) is arranged corresponding to the movable plate (28).

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