A waterproof driver

Abstract

The present invention discloses a waterproof driver, which relates to the technical field of medical care and modern household mechatronics equipment, and solves the problem of poor waterproof performance of the existing driver housing. The technical solution is a waterproof driver, including a driver body, a housing is connected to the driver body, the housing includes a main body shell, the upper end of the main body shell is fixedly connected with an upper cover, the lower end of the main body shell is fixedly connected with a motor shell, one side of the main body shell is fixedly connected with a protective tube, the driver body includes a push rod, and a driving motor that controls the push rod to reciprocate along its axial direction, one end of the push rod passes through the end of the protective tube away from the main body shell, the end of the protective tube away from the main body shell is fixedly connected with a guide sleeve sleeved on the push rod, a first sealing ring sleeved on the push rod is arranged between the guide sleeve and the push rod, and a second sealing ring is arranged between the guide sleeve and the protective tube. The present invention has a reasonable structure, so that the driver has good waterproof performance.

Description

Technical Field

[0001] The invention relates to the technical field of medical care and modern household mechatronics equipment, and in particular to a waterproof driver. Background Art

[0002] Nowadays, home-use drivers are widely used in electric sofas, electric beds and other furniture at home. In addition, electric sitting and lying devices such as nursing beds and dental chairs in hospitals are popular because of their convenient operation and diverse functions. Existing drivers have many additional accessories and are inconvenient to install. Especially in the field of medical care, higher requirements are placed on waterproofing.

[0003] For example, the patent with announcement number CN103812266B discloses a new waterproof driver, including a shell, a main body base arranged in the shell, a driving mechanism, a control circuit board and a driving motor. The control circuit board is installed on one side of the main body base. The control circuit board is provided with power lines connected to the external power supply and the driving motor respectively. The driving mechanism is installed in the main body base, the driving motor is connected to the control circuit board, the main shaft of the driving motor is matched with the turbine of the driving mechanism, a rear support is provided at one end of the driving mechanism, and the driving mechanism and the rear support are fixed by a clamping ring.

[0004] It is mentioned in the above-mentioned prior art that the push rod outer shell of the driver is connected to a push rod bracket, and a push rod guide sleeve is fixed to the end of the push rod bracket, and the push rod guide sleeve is directly fixed to the push rod bracket by bolts. At this time, there is a gap between the push rod guide sleeve and the push rod, and there is a gap between the push rod guide sleeve and the push rod bracket. Water can easily enter the push rod bracket through the gap, and then enter the outer shell through the push rod bracket, thereby affecting the overall waterproof performance of the driver. Summary of the invention

[0005] The object of the present invention is to provide a driver with good waterproof performance.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a waterproof driver, comprising a driver body, the driver body is outer-connected with a shell, the shell comprises a main body shell, the upper end of the main body shell is fixedly connected with an upper cover, the lower end of the main body shell is fixedly connected with a motor shell, one side of the main body shell is fixedly connected with a protective tube, the driver body comprises a push rod, and a drive motor for controlling the push rod to reciprocate along its axial direction, the drive motor is wrapped in the motor shell, the push rod is wrapped in the protective tube, some transmission parts between the drive motor and the push rod are wrapped in the main body shell and the upper cover, one end of the push rod passes through an end of the protective tube away from the main body shell, the end of the protective tube away from the main body shell is fixedly connected with a guide sleeve sleeved on the push rod, a first sealing ring sleeved on the push rod is arranged between the guide sleeve and the push rod, the inner and outer rings of the first sealing ring are respectively pressed against the push rod and the guide sleeve, a second sealing ring is arranged between the guide sleeve and the protective tube, the inner and outer rings of the second sealing ring are respectively pressed against the protective tube and the guide sleeve.

[0007] By adopting the above scheme, a first sealing ring is provided between the guide sleeve and the push rod and is sleeved on the push rod. The position of the first sealing ring is limited by the structure so that the first sealing ring is maintained between the guide sleeve and the push rod, so that the inner and outer rings of the first sealing ring are always kept respectively pressed against the push rod and the guide sleeve, so that the first sealing ring can seal between the guide sleeve and the push rod, so that external water cannot pass through between the guide sleeve and the push rod. At the same time, the first sealing ring can scrape off the lubricating oil on the outer wall of the push rod when the push rod is extended, so as to prevent the lubricating oil from becoming black and dirty due to being attached to impurities as the push rod is extended out of the protective tube. A second sealing ring is provided between the guide sleeve and the protective tube. Since the relative positions of the guide sleeve and the protective tube do not change after installation, the second sealing ring can be maintained between the guide sleeve and the protective tube, so that the second sealing ring can seal between the guide sleeve and the protective tube, so that external water cannot pass through between the guide sleeve and the protective tube, thereby making the overall waterproof performance of the driver better.

[0008] The present invention is further configured as follows: an annular groove is provided on the inner ring wall of the guide sleeve, the first sealing ring is located in the annular groove, the annular groove is located on the end of the inner ring wall of the guide sleeve away from the protective tube, and a cover cover sleeved on the push rod is also provided on the side of the guide sleeve away from the protective tube, the cover cover is fixed on the guide sleeve and blocks the opening of the annular groove on the side away from the protective tube.

[0009] By adopting the above scheme, an annular groove is provided on the inner ring wall of the guide sleeve, and the first sealing ring is clamped in the annular groove. The first sealing ring is limited by the annular groove, so that when the push rod is extended and retracted, even if there is a friction force between the push rod and the first sealing ring, the first sealing ring will not be separated from between the guide sleeve and the push rod. During installation, the first sealing ring is first clamped in the annular groove, and then the guide sleeve is connected to the push rod and fixed to the protective tube, thereby facilitating the fixing of the first sealing ring. The sealing ring will gradually age as the use time increases. Although the annular groove is directly provided on the guide sleeve, it can The first sealing ring is clamped to position and fix it, but when the first sealing ring needs to be replaced, the guide sleeve needs to be removed first, which is more troublesome. The annular groove is set on the inner ring wall of the guide sleeve at the end away from the protective tube, so that the annular groove is open. When the push rod is extended, the first sealing ring can be brought out of the annular groove by the friction between the push rod and the first sealing ring, and the opening of the annular groove is limited by the cover cover, so that the first sealing ring cannot be separated from the annular groove under normal conditions. The cover cover is set to facilitate disassembly and assembly, so that the first sealing ring is easy to disassemble and assemble. At the same time, the cover cover also plays a role in protecting the guide sleeve.

[0010] The present invention is further configured as follows: the guide sleeve is sleeved in the cover, the cover is elastic, and an undercut is fixedly connected to the cover, and the undercut abuts against a side of the guide sleeve close to the protection tube.

[0011] By adopting the above scheme, the cover is abutted against the side of the guide sleeve away from the protective tube, and the guide sleeve is sleeved in the cover, and an undercut is arranged on the cover to abut against the side of the guide sleeve close to the protective tube. The cover is first sleeved on the push rod, and then the cover is pressed toward the side of the guide sleeve. The elastic effect of the cover itself is used to stretch the undercut position, and then the undercut is moved to the side of the guide sleeve close to the protective tube and buckled. When removing the cover, the elasticity of the cover itself is also used to pull the undercut position toward the side away from the protective tube, so that the undercut position is deformed, and then the cover is moved toward the side away from the guide sleeve, and the cover can be removed, making it easy to disassemble and assemble the cover. After removing the cover, the first sealing ring can be brought out by extending the push rod for replacement, thereby facilitating the replacement of the first sealing ring.

[0012] The present invention is further configured as follows: a plurality of fixing bolts threadedly connected to the protection tube are passed through the guide sleeve on the side away from the protection tube, and a third sealing ring is sleeved on the fixing bolt, and two side surfaces of the third sealing ring are respectively pressed against the guide sleeve and the nut of the fixing bolt.

[0013] By adopting the above solution, the guide sleeve is fixed to the protective tube by fixing bolts, so that the guide sleeve and the protective tube are kept fixed, and then the third sealing ring is sleeved on the fixing bolts, so that water cannot pass through the gap between the fixing bolts and the guide sleeve.

[0014] The present invention is further configured as follows: a side of the guide sleeve close to the protection tube is further provided with an annular connecting groove, the end of the protection tube is located in the connecting groove, and the second sealing ring is sleeved on the protection tube and located in the connecting groove.

[0015] By adopting the above scheme, a connecting groove is set on the guide sleeve, and the second sealing ring is sleeved on the protective tube and located in the connecting groove. The sealing effect of the second sealing ring prevents water from passing through, so that external water cannot reach the connection position of the fixing bolt and the protective tube, thereby preventing the fixing bolt from rusting.

[0016] The present invention is further configured as follows: a circle of sealing grooves are provided on the upper surfaces of the main body shell and the motor shell, a circle of sealing edges are correspondingly provided on the lower surfaces of the upper cover and the main body shell, and the cross-section of the sealing edge at one end away from the upper cover or the main body shell is triangular, and the thickness of the sealing edge is greater than the depth of the sealing groove.

[0017] By adopting the above scheme, the shell is made of plastic injection molding, sealing ridges are arranged on the lower surfaces of the upper cover and the main body shell, and sealing grooves are arranged correspondingly on the upper surfaces of the main body shell and the motor shell, and the cross-section of the sealing ridge at one end away from the upper cover or the main body shell is set to be triangular, and the thickness of the sealing ridge is greater than the depth of the sealing groove. When the upper cover and the motor shell are connected to the main body shell, the sealing ridge is inserted into the sealing groove, and the triangular end of the sealing ridge is squeezed and deformed, so that the sealing ridge and the sealing groove are tightly connected and sealed, avoiding water leakage at the connection between the upper cover, the motor shell and the main body shell, thereby further improving the waterproof performance of the driver.

[0018] The present invention is further configured as follows: a plurality of connecting bolts are penetrated through the upper cover and the main body shell, the connecting bolts are threadedly connected to the main body shell or the motor shell, and a fourth sealing ring is sleeved on the connecting bolts, one side of the fourth sealing ring is tightly pressed against the nut of the connecting bolt, and the other side is tightly pressed against the upper cover or the main body shell.

[0019] By adopting the above scheme, in order to achieve a seal between the upper cover, the motor shell and the main body shell, the sharp corners of the sealing edge need to be pressed to the point of being broken, and a large force is required at this time. When the upper cover and the motor shell are fixed to the main body shell by multiple connecting bolts, as the connecting bolts are gradually tightened, the upper cover, the motor shell and the main body shell are gradually compressed, so that the sharp corners of the sealing edge can be pressed to the point of being broken more easily. At the same time, the fourth sealing ring is sleeved on the connecting bolt to seal the connecting bolt and the upper cover and the motor shell to prevent water leakage.

[0020] The present invention is further configured as follows: a groove is provided on the outer wall of the protective tube, protrusions are correspondingly provided on the upper cover and the main body shell, the protrusions are embedded in the groove, and a fifth sealing ring which is sleeved on the protective tube is also provided between the upper cover, the main body shell and the protective tube, and the inner and outer rings of the fifth sealing ring are respectively pressed against the upper cover, the main body shell and the protective tube.

[0021] By adopting the above scheme, a groove is provided on the outer wall of the protective tube, and protrusions are correspondingly provided on the upper cover and the main body shell. The protective tube is fixed to the upper cover and the main body shell by the protrusions clamping into the grooves, so that the installation and fixation of the protective tube is convenient, and then the fifth sealing ring is sleeved on the protective tube for sealing and waterproofing. During installation, the fifth sealing ring is first sleeved on the protective tube, and then the protective tube is placed on the main body shell, and then the upper cover is installed, so that the protrusion is embedded in the groove, and the upper cover and the main body shell also compress the fifth sealing ring, so that the installation of the protective tube is convenient, and the protection tube and the upper cover and the main body shell are sealed and waterproof.

[0022] The present invention is further configured as follows: a circle of sealing grooves is also provided on the protection tube, and sealing edges are also correspondingly provided on the main shell and the upper cover, and the cross-section of the sealing edge at one end away from the upper cover or the main shell is triangular, and the thickness of the sealing edge is greater than the depth of the sealing groove.

[0023] By adopting the above solution, in addition to the fifth sealing ring, the protection tube and the main body shell and the upper cover can also be sealed by the cooperation of the sealing groove and the sealing edge.

[0024] The present invention is further configured as follows: a plurality of first bolts threadedly connected to the protective tube are passed through the guide sleeve on the side facing away from the protective tube, a plurality of second bolts are passed through the upper cover and the main body shell, the second bolts are threadedly connected to the main body shell or the motor shell, a circle of annular ridges are provided on the guide sleeve, the upper cover and the main body shell, the first bolts and the second bolts respectively pass through the corresponding circles of the annular ridges and the nut parts press the annular ridges.

[0025] By adopting the above scheme, in addition to sealing the connection position of the fixing bolt and the connecting bolt by the sealing ring, a circle of annular ridges can be set on the upper cover, the main body shell, and the guide sleeve. When the fixing bolt and the connecting bolt are screwed into the threaded hole, the nut parts of the fixing bolt and the connecting bolt can squeeze the annular ridges so that the annular ridges are crushed, thereby making the connection position of the fixing bolt and the connection position of the connecting bolt sealed.

[0026] In summary, the present invention has the following beneficial effects: first, a first sealing ring and a second sealing ring are arranged at the guide sleeve position, so that the guide sleeve and the protective tube are sealed and waterproof, and the guide sleeve and the push rod are sealed and waterproof; second, by arranging sealing edges and sealing grooves, the upper cover, the motor housing and the main body housing are kept sealed and waterproof, and the cost is low and the sealing is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0028] Figure 2 is an exploded view of the overall structure of the embodiment;

[0029] Figure 3 is a cross-sectional view of the overall structure of the embodiment;

[0030] Figure 4 yes Figure 3 A magnified view of part A;

[0031] Figure 5 yes Figure 3 Enlarged view of part B.

[0032] Figure numerals: 1. driver body; 2. outer shell; 3. main shell; 4. upper cover; 5. motor shell; 6. protective tube; 7. push rod; 8. drive motor; 9. guide sleeve; 10. first sealing ring; 11. second sealing ring; 12. annular groove; 13. cover; 14. undercut; 15. fixing bolt; 16. third sealing ring; 17. connecting groove; 18. sealing groove; 19. sealing ridge; 20. connecting bolt; 21. fourth sealing ring; 22. groove; 23. protrusion; 24. fifth sealing ring; 25. annular ridge. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0034] Combination Figure 1 and Figure 2 As shown, a waterproof driver comprises a driver body 1, the driver body 1 comprises a push rod 7, and a driving motor 8 for controlling the push rod 7 to reciprocate along its axial direction, and some transmission parts between the driving motor 8 and the push rod 7. The driver body 1 is covered with a shell 2, the shell 2 comprises four parts, namely, a main body shell 3, an upper cover 4, a motor shell 5 and a protective tube 6, the four parts are sealed and connected, and the shell 2 is made of plastic injection molding, the upper cover 4 is fixed to the upper end of the main body shell 3, the motor shell 5 is fixed to the lower end of the main body shell 3, one end of the protective tube 6 is fixed to one side of the upper cover 4 and the lower cover, the driving motor 8 is sleeved in the motor shell 5, the transmission connection between the driving motor 8 and the push rod 7 is sleeved in the upper cover 4 and the main body shell 3, and the push rod 7 is sleeved in the protective tube 6.

[0035] Combination Figure 3 and Figure 4 As shown, the upper surfaces of the main body shell 3 and the motor shell 5 are each provided with a circle of sealing grooves 18, and the lower surfaces of the upper cover 4 and the main body shell 3 are correspondingly provided with a circle of sealing edges 19, the sealing edges 19 are integrally injection-molded during the injection molding of the upper cover 4 and the main body shell 3, and the cross-section of the sealing edge 19 at one end away from the upper cover 4 or the main body shell 3 is triangular, and the thickness of the sealing edge 19 is greater than the depth of the sealing groove 18.

[0036] Combination Figure 1 and Figure 2 As shown, a plurality of connecting bolts 20 are provided on both the upper cover 4 and the main body shell 3, and the connecting bolts 20 are threadedly connected to the main body shell 3 or the motor shell 5, and a fourth sealing ring 21 is sleeved on the connecting bolt 20, and one side of the fourth sealing ring 21 is pressed against the nut of the connecting bolt 20, and the other side is pressed against the upper cover 4 or the main body shell 3. At this time, the connecting position of the connecting bolt 20 can also be set outside the circle of the sealing ridge 19, thereby reducing a hidden danger position of water leakage. At this time, a circle of annular ridges 25 (not shown in the figure) can also be set around the threaded hole connected to the connecting bolt 20, and when the connecting bolt 20 is screwed into the threaded hole, the annular ridges 25 are crushed by the nut of the connecting bolt 20, so that the connecting position of the connecting bolt 20 is sealed.

[0037] During installation, first align the upper cover 4, the main body shell 3 and the motor shell 5 so that the sealing edge 19 is embedded in the sealing groove 18, and then screw on the connecting bolts 20 to connect and fix. In the process of gradually tightening the connecting bolts 20, the tip of the sealing edge 19 is pressed against the bottom of the sealing groove 18. As the pressure gradually increases, the tip of the sealing edge 19 is ruptured, so that the sealing edge 19 and the sealing groove 18 are tightly connected to achieve sealing and waterproofing.

[0038] Combination Figure 3 and Figure 4 As shown, a groove 22 is provided on the outer wall of the protection tube 6, and protrusions 23 are correspondingly provided on the upper cover 4 and the main body shell 3, and the protrusions 23 are embedded in the groove 22, and a fifth sealing ring 24 is also provided between the upper cover 4, the main body shell 3 and the protection tube 6, and the inner and outer rings of the fifth sealing ring 24 are respectively pressed against the upper cover 4, the main body shell 3 and the protection tube 6. At this time, a sealing groove 18 and a sealing ridge 19 can also be provided on the protection tube 6, the upper cover 4, and the main body shell 3, respectively, and the connection position of the three can be sealed by the cooperation of the sealing groove 18 and the sealing ridge 19.

[0039] During installation, first put the fifth sealing ring 24 on the protection tube 6, then put the protection tube 6 on the main shell 3, and then install the upper cover 4 so that the protrusion 23 is embedded in the groove 22. The upper cover 4 and the main shell 3 also press the fifth sealing ring 24, so that the installation of the protection tube 6 is convenient, and the protection tube 6 and the upper cover 4 and the main shell 3 are sealed and waterproof.

[0040] Combination Figure 3 and Figure 5 As shown, one end of the push rod 7 passes through the end of the protection tube 6 away from the main body shell 3, and the end of the protection tube 6 away from the main body shell 3 is fixedly connected to a guide sleeve 9 sleeved on the push rod 7, and the side of the guide sleeve 9 away from the protection tube 6 is penetrated by a plurality of fixing bolts 15 (threadedly connected to the protection tube 6) Figure 2 ), and a third sealing ring 16 is sleeved on the fixing bolt 15 ( Figure 2 As can be seen in the figure, the two sides of the third sealing ring 16 are respectively pressed against the guide sleeve 9 and the nut of the fixing bolt 15, and the first sealing ring 10 sleeved on the push rod 7 is arranged between the guide sleeve 9 and the push rod 7, and the inner and outer circles of the first sealing ring 10 are respectively pressed against the push rod 7 and the guide sleeve 9, and the second sealing ring 11 is arranged between the guide sleeve 9 and the protective tube 6, and the inner and outer circles of the second sealing ring 11 are respectively pressed against the protective tube 6 and the guide sleeve 9. At this time, a sealing ridge 19 and a sealing groove 18 can also be respectively arranged on the guide sleeve 9 and the protective tube 6, and the sealing is performed by the cooperation of the sealing ridge 19 and the sealing groove 18. At this time, a circle of annular convex ridges 25 (not shown in the figure) can also be arranged around the threaded hole connected to the fixing bolt 15, and when the fixing bolt 15 is screwed into the threaded hole, the annular convex ridge 25 is crushed by the nut of the fixing bolt 15, so that the connection position of the fixing bolt 15 is sealed.

[0041] An annular groove 12 is provided on the inner ring wall of the guide sleeve 9, and the first sealing ring 10 is located in the annular groove 12. The annular groove 12 is located at the end of the inner ring wall of the guide sleeve 9 away from the protective tube 6. A cover 13 sleeved on the push rod 7 is also provided on the side of the guide sleeve 9 away from the protective tube 6. The cover 13 is fixed on the guide sleeve 9 and blocks the opening of the annular groove 12 away from the protective tube 6. The guide sleeve 9 is sleeved in the cover 13. The cover 13 is elastic, and a buckle 14 is fixedly connected to the cover 13. The buckle 14 abuts against the side of the guide sleeve 9 close to the protective tube 6. A circle of annular connecting grooves 17 are also provided on the side of the guide sleeve 9 close to the protective tube 6. The end of the protective tube 6 is located in the connecting groove 17. The second sealing ring 11 is sleeved on the protective tube 6 and located in the connecting groove 17.

[0042] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A waterproof driver, comprising a driver body (1), wherein the driver body (1) is connected to a housing (2), wherein the housing (2) comprises a main body shell (3), wherein the upper end of the main body shell (3) is fixedly connected to an upper cover (4), wherein the lower end of the main body shell (3) is fixedly connected to a motor shell (5), wherein one side of the main body shell (3) is fixedly connected to a protective tube (6), wherein the driver body (1) comprises a push rod (7), and a drive motor (8) for controlling the push rod (7) to reciprocate along its axial direction, wherein the drive motor (8) is wrapped in the motor shell (5), wherein the push rod (7) is wrapped in the protective tube (6), wherein some transmission parts between the drive motor (8) and the push rod (7) are wrapped in the main body shell (3) and the upper cover (4), wherein one end of the push rod (7) passes through an end of the protective tube (6) away from the main body shell (3), wherein: The end of the protection tube (6) facing away from the main body shell (3) is fixedly connected to a guide sleeve (9) sleeved on the push rod (7); a first sealing ring (10) sleeved on the push rod (7) is arranged between the guide sleeve (9) and the push rod (7); the inner and outer rings of the first sealing ring (10) are respectively pressed against the push rod (7) and the guide sleeve (9); a second sealing ring (11) is arranged between the guide sleeve (9) and the protection tube (6); the inner and outer rings of the second sealing ring (11) are respectively pressed against the protection tube (6) and the guide sleeve (9); An annular groove (12) is provided on the inner wall of the guide sleeve (9), the first sealing ring (10) is located in the annular groove (12), the annular groove (12) is located on the end of the inner wall of the guide sleeve (9) away from the protective tube (6), and a cover (13) sleeved on the push rod (7) is also provided on the side of the guide sleeve (9) away from the protective tube (6), the cover (13) is fixed on the guide sleeve (9) and blocks the opening of the annular groove (12) on the side away from the protective tube (6); The guide sleeve (9) is sleeved in the cover (13); the cover (13) is elastic, and a buckle (14) is fixedly connected to the cover (13); the buckle (14) abuts against a side of the guide sleeve (9) close to the protective tube (6); A plurality of fixing bolts (15) threadedly connected to the protection tube (6) are provided on the side of the guide sleeve (9) facing away from the protection tube (6), and a third sealing ring (16) is sleeved on the fixing bolt (15), and two side surfaces of the third sealing ring (16) are respectively pressed against the guide sleeve (9) and the nuts of the fixing bolts (15); The upper surfaces of the main body shell (3) and the motor shell (5) are each provided with a circle of sealing grooves (18), and the lower surfaces of the upper cover (4) and the main body shell (3) are each correspondingly provided with a circle of sealing edges (19), and the cross-section of the sealing edge (19) at one end away from the upper cover (4) or the main body shell (3) is triangular, and the thickness of the sealing edge (19) is greater than the depth of the sealing groove (18).

2. A waterproof driver according to claim 1, characterized in that: A circular connecting groove (17) is also provided on one side of the guide sleeve (9) close to the protective tube (6); the end of the protective tube (6) is located in the connecting groove (17); and the second sealing ring (11) is sleeved on the protective tube (6) and located in the connecting groove (17).

3. A waterproof driver according to claim 1, characterized in that: A plurality of connecting bolts (20) are provided on both the upper cover (4) and the main body shell (3), the connecting bolts (20) are threadedly connected to the main body shell (3) or the motor shell (5), and a fourth sealing ring (21) is sleeved on the connecting bolts (20), one side of the fourth sealing ring (21) is tightly pressed against the nut of the connecting bolt (20), and the other side is tightly pressed against the upper cover (4) or the main body shell (3).

4. A waterproof driver according to claim 1, characterized in that: A groove (22) is provided on the outer wall of the protection tube (6), and protrusions (23) are correspondingly provided on the upper cover (4) and the main body shell (3), and the protrusions (23) are embedded in the groove (22). A fifth sealing ring (24) sleeved on the protection tube (6) is also provided between the upper cover (4), the main body shell (3) and the protection tube (6), and the inner and outer rings of the fifth sealing ring (24) are respectively pressed against the upper cover (4), the main body shell (3) and the protection tube (6).

5. A waterproof driver according to claim 1, characterized in that: The protection tube (6) is also provided with a circle of sealing grooves (18), and the main shell (3) and the upper cover (4) are also provided with corresponding sealing edges (19), and the cross section of the sealing edge (19) at one end away from the upper cover (4) or the main shell (3) is triangular, and the thickness of the sealing edge (19) is greater than the depth of the sealing groove (18).

6. A waterproof driver according to claim 1, characterized in that: A plurality of first bolts threadedly connected to the protective tube (6) are passed through the guide sleeve (9) on the side facing away from the protective tube (6); a plurality of second bolts are passed through the upper cover (4) and the main body shell (3); the second bolts are threadedly connected to the main body shell (3) or the motor shell (5); a circle of annular ridges (25) are provided on the guide sleeve (9), the upper cover (4) and the main body shell (3); the first bolts and the second bolts respectively pass through the corresponding circles of the annular ridges (25) and the nut parts press the annular ridges (25) tightly.

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