Waterproof drive

Abstract

The present invention discloses a waterproof driver, comprising a power assembly, a screw, a guide rail fixing member, a drive block and a grooved guide rail; the guide rail fixing member is arranged in the housing of the power assembly, one end of the grooved guide rail extends into the housing of the power assembly and is fixedly connected to the guide rail fixing member; one end of the screw is rotatably connected to the end of the grooved guide rail, and the other end passes through the guide rail fixing member and is connected to the power assembly, and the drive block is sleeved on the grooved guide rail and connected to the screw; a waterproof ring is arranged between the guide rail fixing member and the housing of the power assembly, and the waterproof ring is respectively pressed against the guide rail fixing member and the housing of the power assembly; a wear-resistant sealing ring is arranged between the guide rail fixing member and the screw, and the wear-resistant sealing ring is respectively pressed against the guide rail fixing member and the screw. This waterproof driver can effectively prevent water from entering the interior of the power assembly and causing damage to components through the dual protection of external waterproofing and internal waterproofing, thereby making the overall waterproof performance and safety performance of the driver better.

Description

Technical Field

[0001] The present invention relates to the technical field of drivers, and in particular to a waterproof driver. Background Art

[0002] At present, drivers are widely used in electric sofas, electric beds, as well as electric sitting and lying devices such as hospital nursing beds and dental chairs. They are popular because of their convenient operation and diverse functions.

[0003] Patent publication number CN 216242117 U discloses an electric push rod with an external nut, comprising a motor, a transmission mechanism, a screw, a nut, and an outer tube. The screw is disposed within the outer tube, the motor is connected to the transmission mechanism, which is in turn connected to the screw. The motor transmits power through the transmission mechanism to drive the screw to rotate. The nut is provided with a sliding hole, the outer tube is disposed within the sliding hole, the nut is slidably connected to the outer tube, and the nut is disposed on the screw and threadedly connected to the screw. This utility model facilitates the connection between the nut and the connector during use, improving the connection between the nut and the connector.

[0004] As the application areas of drivers continue to expand, higher requirements are being placed on waterproof performance. However, the above-mentioned existing technologies have defects in their waterproof structural design: on the one hand, there is a lack of waterproof structure between the outer tube and the motor housing, resulting in a gap between the outer tube and the motor housing, through which water can enter the motor housing and cause a short circuit in the components; on the other hand, due to the side opening of the outer tube, the screw rod is exposed, and there is no waterproof structure between the screw rod and the outer tube. As a result, there is a gap between the screw rod and the outer tube, through which water can enter the motor housing and cause a short circuit in the components.

[0005] It can be seen that due to the defects in the waterproof structure design of the existing technology, the overall waterproof performance and safety performance of the driver are affected. Summary of the Invention

[0006] Based on this, it is necessary to provide a waterproof driver that can solve the above problems.

[0007] A waterproof driver comprises a power assembly, a screw, a guide rail fixing member, a driving block and a grooved guide rail;

[0008] The guide rail fixing member is arranged in the housing of the power assembly, and one end of the grooved guide rail extends into the housing of the power assembly and is fixedly connected to the guide rail fixing member;

[0009] The screw is accommodated in the grooved guide rail, one end of the screw is rotatably connected to the end of the grooved guide rail, the other end of the screw passes through the guide rail fixing member and is connected to the power assembly, and the driving block is sleeved on the grooved guide rail and threadedly connected to the screw;

[0010] Wherein, a waterproof ring is provided between the guide rail fixing member and the housing of the power assembly, and the waterproof ring is respectively pressed against the guide rail fixing member and the housing of the power assembly, thereby forming a seal between the guide rail fixing member and the housing of the power assembly;

[0011] A wear-resistant sealing ring is provided between the guide rail fixing piece and the screw rod, and the wear-resistant sealing ring is respectively pressed against the guide rail fixing piece and the screw rod, thereby forming a seal between the guide rail fixing piece and the screw rod.

[0012] In one embodiment, the guide rail fixing member includes a main body plate that is clamped with the housing of the power assembly, and a protrusion provided on one side of the main body plate for inserting the grooved guide rail; the guide rail fixing member is provided with a first through hole that passes through the main body plate and the protrusion for the screw to pass through;

[0013] Wherein, the waterproof ring is arranged on the outer side wall of the protrusion and is respectively pressed against the outer side wall of the protrusion and the housing of the power component; the wear-resistant sealing ring is accommodated in the first through hole and is respectively pressed against the inner wall of the first through hole and the screw.

[0014] In one embodiment, the wear-resistant sealing ring includes an inner ring, a middle ring and an outer ring connected in sequence from the inside to the outside, the thickness of the inner ring is greater than the thickness of the middle ring, and the inner ring is interference fit with the outer wall of the screw, the thickness of the outer ring is greater than the thickness of the middle ring, and the outer ring is interference fit with the inner wall of the first through hole.

[0015] In one embodiment, the thickness of the inner ring is greater than the thickness of the middle ring, so that the inner ring protrudes along the thickness direction;

[0016] The waterproof driver further comprises an elastic member sleeved on the inner ring, wherein the elastic member is used to generate radial pressure on the inner ring after elastic contraction, thereby pressing the inner ring and the screw.

[0017] In one embodiment, the elastic member is an elastic ring, a spring or a torsion spring.

[0018] In one embodiment, the thickness of the outer ring is greater than that of the middle ring, so that the outer ring protrudes along the thickness direction, and the outer ring and the inner ring protrude along the same direction, so that an annular accommodating space is formed between the outer ring and the inner ring, and the elastic member is arranged in the annular accommodating space.

[0019] In one embodiment, the protruding end of the inner ring expands along the outer circumference to form a blocking portion for preventing the elastic member from falling.

[0020] In one embodiment, a side wall of the first through hole is provided with a limiting step, an inner wall of the housing of the power assembly is provided with a limiting seat, and both ends of the wear-resistant sealing ring in the thickness direction abut against the limiting step and the limiting seat respectively.

[0021] In one embodiment, the outer side wall of the protrusion is provided with an annular retaining groove corresponding to the waterproof ring, and when the housing of the power assembly is connected to the guide rail fixing member, the waterproof ring abuts against the annular retaining groove.

[0022] In one embodiment, an annular mounting groove corresponding to the waterproof ring is provided on the housing of the power assembly, and when the housing of the power assembly is connected to the guide rail fixing member, the waterproof ring abuts against the annular mounting groove.

[0023] The housing of the power assembly in this waterproof driver, the waterproof ring and the guide rail fixing part abut against each other, thereby forming a seal between the guide rail fixing part and the housing of the power assembly, thereby forming external waterproofness of the waterproof driver, preventing water from entering the interior of the power assembly through the gap between the guide rail fixing part and the housing of the power assembly; in addition, the wear-resistant sealing ring is provided between the screw and the guide rail fixing part, and the guide rail fixing part, the wear-resistant sealing ring and the screw abut against each other, thereby forming a seal between the guide rail fixing part and the screw, thereby forming internal waterproofness of the waterproof driver, preventing water from entering the interior of the power assembly through the gap between the screw and the guide rail fixing part.

[0024] This waterproof driver can effectively prevent water from entering the interior of the power assembly and causing damage to components through dual protection of external waterproofing and internal waterproofing, making the overall waterproof performance and safety performance of the driver even better. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] in:

[0027] Figure 1 Schematic diagram of the structure of a waterproof driver according to one embodiment.

[0028] Figure 2 For example Figure 1 A partially exploded diagram of the waterproof drive is shown.

[0029] Figure 3 For example Figure 1 Schematic diagram of part of the internal structure of the waterproof driver shown.

[0030] Figure 4 For example Figure 1 The cross-sectional structure diagram of the waterproof driver is shown.

[0031] Figure 5 For example Figure 1 The diagram shows the assembly of the screw, wear-resistant sealing ring, guide rail fixing part and elastic part of the waterproof drive.

[0032] Figure 6 For example Figure 1 The exploded diagram of the screw, wear-resistant sealing ring, guide rail fixing part and elastic part of the waterproof drive is shown.

[0033] Figure 7 For example Figure 1 The enlarged structural diagram of the wear-resistant sealing ring of the waterproof drive is shown.

[0034] Figure 8 For example Figure 7 The cross-sectional structure diagram of the wear-resistant sealing ring is shown. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The waterproof driver of the embodiment shown includes a power assembly 10 , a screw 20 , a guide rail fixing member 30 , a driving block 40 and a grooved guide rail 50 .

[0037] The guide rail fixing member 30 is disposed in the housing 12 of the power assembly 10 . One end of the grooved guide rail 50 extends into the housing 12 of the power assembly 10 and is fixedly connected to the guide rail fixing member 30 .

[0038] The screw 20 is accommodated in the grooved guide rail 50, one end of the screw 20 is rotatably connected to the end of the grooved guide rail 50, the other end of the screw 20 passes through the guide rail fixing member 30 and is connected to the power component 10, and the drive block 40 is sleeved on the grooved guide rail 50 and is threadedly connected to the screw 20.

[0039] A waterproof ring 36 is provided between the guide rail fixing member 30 and the housing 12 of the power assembly 10 . The waterproof ring 36 presses against the guide rail fixing member 30 and the housing 12 of the power assembly 10 respectively, thereby forming a seal between the guide rail fixing member 30 and the housing 12 of the power assembly 10 .

[0040] A wear-resistant sealing ring 60 is provided between the guide rail fixing member 30 and the screw rod 20 . The wear-resistant sealing ring 60 presses against the guide rail fixing member 30 and the screw rod 20 respectively, thereby forming a seal between the guide rail fixing member 30 and the screw rod 20 .

[0041] The housing 12, waterproof ring 36 and guide rail fixing member 30 of the power assembly 10 in this waterproof driver abut against each other, thereby forming a seal between the guide rail fixing member 30 and the housing 12 of the power assembly 10, thereby forming external waterproofing of the waterproof driver, preventing water from entering the interior of the power assembly 10 through the gap between the guide rail fixing member 30 and the housing 12 of the power assembly 10; in addition, a wear-resistant sealing ring 60 is provided between the guide rail fixing member 30 and the screw rod 20, and the guide rail fixing member 30, the wear-resistant sealing ring 60 and the screw rod 20 abut against each other, thereby forming a seal between the guide rail fixing member 30 and the screw rod 20, thereby forming internal waterproofing of the waterproof driver, preventing water from entering the interior of the power assembly 10 through the gap between the guide rail fixing member 30 and the screw rod 20.

[0042] This waterproof driver is protected by both external and internal waterproofing, which can effectively prevent water from entering the interior of the power assembly 10 and causing damage to components, thereby improving the overall waterproof performance and safety performance of the driver.

[0043] Combine Figure 5 and Figure 6 The guide rail fixing member 30 includes a main body plate 32 that is clamped with the housing 12 of the power assembly 10 and a protrusion 34 arranged on one side of the main body plate 32 to insert the grooved guide rail 50. The guide rail fixing member 30 has a first through hole 301 that passes through the main body plate 32 and the protrusion 34 for the screw rod 20 to pass through.

[0044] Specifically, the waterproof ring 36 is sleeved on the outer wall of the protrusion 34 and pressed against the outer wall of the protrusion 34 and the housing 12 of the power assembly 10 , thereby forming a seal between the guide rail fixing member 30 and the housing 12 of the power assembly 10 .

[0045] Specifically, the wear-resistant sealing ring 60 is accommodated in the first through hole 301 and pressed against the inner wall of the first through hole 301 and the screw rod 20 , thereby forming a seal between the guide rail fixing member 30 and the screw rod 20 .

[0046] Combine Figure 7 and Figure 8 The waterproof driver also includes a wear-resistant sealing ring 60 arranged between the screw 20 and the first through hole 301. The wear-resistant sealing ring 60 includes an inner ring 62, a middle ring 64 and an outer ring 66 connected from the inside to the outside. The thickness of the inner ring 62 is greater than the thickness of the middle ring 64, and the inner ring 62 has an interference fit with the outer wall of the screw 20. The thickness of the outer ring 66 is greater than the thickness of the middle ring 64, and the outer ring 66 has an interference fit with the inner wall of the first through hole 301.

[0047] A wear-resistant sealing ring 60 is provided between the screw 20 and the first through hole 301. The inner ring 62 of the wear-resistant sealing ring 60 has an interference fit with the outer wall of the screw 20, and the outer ring 66 has an interference fit with the inner wall of the first through hole 301. The wear-resistant sealing ring 60 seals the gap between the screw 20 and the guide rail fixing member 30, thereby forming internal waterproofing of the power component 10 and preventing water from entering the interior of the power component 10 through the gap between the screw 20 and the guide rail fixing member 30.

[0048] The thickness of the inner ring 62 is greater than the thickness of the middle ring 64, which can better achieve the sealing between the inner ring 62 and the screw 20. The thickness of the outer ring 66 is greater than the thickness of the middle ring 64, which can better achieve the sealing between the outer ring 66 and the guide rail fixing part 30, thereby ensuring the sealing of the screw 20 during rotation.

[0049] The waterproof driver of the present invention can effectively prevent water from external sources from entering the interior of the power assembly 10 through the gap between the screw 20 and the guide rail fixing member 30 when the screw 20 is exposed, thereby avoiding damage to internal components, making the overall waterproof performance and safety performance of the waterproof driver better.

[0050] In this embodiment, the outer diameter of the outer ring 66 is slightly larger than the diameter of the first through hole 301, and the inner diameter of the inner ring 62 is slightly smaller than the diameter of the screw 20, that is, there is a certain "interference amount", thereby achieving an interference fit between the inner ring 62 and the outer wall of the screw 20, and an interference fit between the outer ring 66 and the inner wall of the first through hole 301.

[0051] Therefore, when the wear-resistant sealing ring 60 is arranged between the screw 20 and the first through hole 301, the wear-resistant sealing ring 60 will produce a certain radial tightening force on the inner wall of the screw 20 and the first through hole 301, that is, the inner ring 62 is tightly abutted against the outer wall of the screw 20, and the outer ring 66 is tightly abutted against the inner wall of the first through hole 301.

[0052] When the screw 20 is in a rotating or non-rotating state, the wear-resistant sealing ring 60 is interference-pressed against the inner walls of the screw 20 and the first through hole 301, that is, the wear-resistant sealing ring 60 always remains respectively pressed against the inner walls of the screw 20 and the first through hole 301, so that the wear-resistant sealing ring 60 can seal between the screw 20 and the guide rail fixing member 30, so that external water cannot pass between the screw 20 and the guide rail fixing member 30.

[0053] Specifically, in this embodiment, the wear-resistant seal ring 60 is a wear-resistant seal ring 60. Its sealing principle is as follows: an oil film controlled by the oil seal edge exists between the wear-resistant seal ring 60 and the screw 20. This oil film has fluid lubrication properties. Under the action of liquid surface tension, the rigidity of the oil film is just enough to form a crescent surface at the contact end of the oil film and air, preventing leakage of the working medium, thereby achieving a seal of the screw 20.

[0054] With reference to the accompanying drawings, in this embodiment, the thickness of the inner ring 62 is greater than the thickness of the middle ring 64 , so that the inner ring 62 protrudes along the thickness direction.

[0055] The waterproof driver further includes an elastic member 70 sleeved on the inner ring 62 . The elastic member 70 is used to generate radial pressure on the inner ring 62 after elastic contraction, thereby pressing the inner ring 62 and the screw 20 .

[0056] During use, the wear-resistant sealing ring 60 is repeatedly deformed under the mechanical stress generated by the rotation of the screw 20, and fatigue aging will occur. That is, after the wear-resistant sealing ring 60 has been running for a period of time, the radial tightening force generated by the wear-resistant sealing ring 60 on the screw 20 will gradually decrease or even disappear.

[0057] The wear-resistant sealing ring 60 includes an inner ring 62, a middle ring 64 and an outer ring 66 connected in sequence from the inside to the outside. The thickness of the inner ring 62 is greater than the thickness of the middle ring 64, and the thickness of the outer ring 66 is greater than the thickness of the middle ring 64. Such a structural setting can only cause fatigue aging of the inner ring 62 and avoid affecting the outer ring 66.

[0058] In this embodiment, the elastic member 70 is sleeved on the inner ring 62, and the elastic member 70 generates radial pressure on the inner ring 62 after elastic contraction, thereby pressing the inner ring 62 and the screw 20, thereby solving the problem of fatigue aging of the inner ring 62, thereby ensuring that the inner ring 62 is in close contact with the screw 20.

[0059] In conjunction with the accompanying drawings, in this embodiment, the elastic member 70 is an elastic ring. In other embodiments, the elastic member 70 can also be a spring or a torsion spring.

[0060] Combine Figure 7 and Figure 8In this embodiment, the thickness of the outer ring 66 is greater than the thickness of the middle ring 64, so that the outer ring 66 protrudes along the thickness direction, and the outer ring 66 and the inner ring 62 protrude in the same direction, so that an annular accommodating space 65 is formed between the outer ring 66 and the inner ring 62, and the elastic member 70 is arranged in the annular accommodating space 65.

[0061] When the elastic member 70 is a torsion spring, the torsion spring abuts against the inner ring 62 and the outer ring 66 at the same time, thereby ensuring that the inner ring 62 is in close contact with the outer ring of the screw 20 and that the outer ring 66 is in close contact with the inner wall of the first through hole 301 .

[0062] Combine Figure 7 and Figure 8 In this embodiment, the protruding end of the inner ring 62 expands along the outer circumference to form a blocking portion 63 for preventing the elastic member 70 from falling.

[0063] In combination with the accompanying drawings, in this embodiment, the side wall of the first through hole 301 is provided with a limiting step 38, the inner wall of the shell 12 of the power component 10 is provided with a limiting seat 14, and the two ends of the wear-resistant sealing ring 60 in the thickness direction are respectively abutted against the limiting step 38 and the limiting seat 14.

[0064] By clamping the limiting step 38 and the limiting seat 14 together, the wear-resistant sealing ring 60 can be fixed, so that the wear-resistant sealing ring 60 will not move back and forth during operation, thereby ensuring stable contact between the wear-resistant sealing ring 60 and the guide rail fixing part and the screw 20, so that the wear-resistant sealing ring 60 maintains the best sealing state.

[0065] In addition, the offset friction of the wear-resistant sealing ring 60 during operation is reduced, and the service life of the wear-resistant sealing ring 60 is extended.

[0066] In conjunction with the drawings, in this embodiment, the outer wall of the protrusion 34 is provided with an annular retaining groove 35 corresponding to the waterproof ring 36. When the housing 12 of the power assembly 10 is connected to the guide rail fixing member 30, the waterproof ring 36 abuts against the annular retaining groove 35.

[0067] In conjunction with the drawings, in this embodiment, an annular mounting groove 16 corresponding to the waterproof ring 36 is provided on the housing 12 of the power assembly 10. When the housing 12 of the power assembly 10 is connected to the guide rail fixing member 30, the waterproof ring 36 abuts against the annular mounting groove 16.

[0068] Specifically, the housing 12 of the power assembly 10 presses the guide rail fixing part 30, and at this time the waterproof ring 36 is over-interference and embedded in the annular mounting groove 16 and the annular retaining groove 35, that is, the waterproof ring 36 always remains tightly pressed against the housing 12 of the power assembly 10 and the guide rail fixing part 30, so that the waterproof ring 36 can seal between the housing 12 of the power assembly 10 and the guide rail fixing part 30, so that external water cannot pass through between the housing 12 of the power assembly 10 and the guide rail fixing part 30.

[0069] In conjunction with the drawings, in this embodiment, a slot 18 matching the main plate 32 is further provided on the housing 12 of the power assembly 10 , and the main plate 32 is snapped into the slot 18 , thereby achieving installation between the main plate 32 and the housing 12 of the power assembly 10 .

[0070] In conjunction with the accompanying drawings, in this embodiment, the waterproof driver also includes a travel switch 80 arranged in the groove-shaped guide rail 50. The travel switch 80 is electrically connected to the power component 10 through a lead 82. A second through hole 302 is also provided on the guide rail fixing member 30. A waterproof plunger 39 is provided in the second through hole 302. The waterproof plunger 39 is sleeved on the outside of the lead 82. The lead 82 passes through the second through hole 302, and the waterproof plunger 39 is interference fit with the second through hole 302, thereby achieving sealing of the second through hole 302.

[0071] In other embodiments, after the lead wire 82 passes through the second through hole 302 , the second through hole 302 may be filled with waterproof glue.

[0072] In conjunction with the accompanying drawings, in this embodiment, there are two limit switches 80, and the exposed wire grooves of the two limit switches 80 are filled with waterproof glue, which can effectively prevent external water from entering the two limit switches 80 and causing damage to components, making the overall waterproof performance and safety performance of the two limit switches 80 better.

[0073] In conjunction with the accompanying drawings, in this embodiment, the shell 12 of the power component 10 includes an upper cover 122 and a main shell 124. The lower surface of the upper cover 122 is provided with a sealing ridge (not shown in the figure), and the upper surface of the main shell 124 is provided with a sealing groove corresponding to the sealing ridge (not shown in the figure). When the upper cover 122 is placed on the main shell 124, the sealing ridge is inserted into the sealing groove to form a seal.

[0074] Preferably, the cross-section of the sealing edge at one end facing away from the upper cover 122 is triangular.

[0075] When the upper cover 122 is placed on the main shell 124, the sealing rib is inserted into the sealing groove, and the upper cover 122 and the main shell 124 are connected and fixed by screwing on the connecting bolts. In the process of gradually tightening the connecting bolts, the tip of the sealing rib is pressed against the bottom of the sealing groove. As the pressure gradually increases, the sealing rib and the sealing groove are tightly connected to achieve sealing and waterproofing, thereby avoiding water leakage at the connection between the upper cover 122 and the main shell 124, thereby further improving the waterproof performance of the waterproof driver.

[0076] In conjunction with the drawings, in this embodiment, the upper cover 122 is provided with a plurality of connection holes, and a plurality of connection bolts are passed through 122 corresponding to the plurality of connection holes. The connection bolts are threadedly connected to the main shell 124, and the upper cover and the main shell are connected and fixed by screwing on the connection bolts.

[0077] In order to prevent water from entering the housing 12 of the power assembly 10 through the gap between the connecting bolts and the connecting holes and causing a short circuit to the components, a waterproof rubber plug cap 126 is added to the connecting hole to achieve sealing and waterproofing. The bottom surface of the waterproof rubber plug cap 126 is pressed against the nut of the connecting bolt, the annular side surface of the waterproof rubber plug cap 126 is pressed against the side wall of the connecting hole, and the outer edge of the waterproof rubber plug cap 126 is pressed against the upper cover 122, thereby blocking water from entering the housing 12 of the power assembly 10 through the connecting hole and causing a short circuit to the components, thereby reducing a potential risk of water leakage.

[0078] In this embodiment, a motor 19 is provided in the power assembly 10 .

[0079] In conjunction with the accompanying drawings, to prevent the risk of short circuits caused by water directly contacting the motor 19, the housing 12 of the power assembly 10 also includes a motor cover 128. The motor cover 128 is provided with a waterproof ring (not shown) for sealing. When the motor cover 128 is plugged into the main body shell 124, the waterproof ring always remains tightly against the motor cover 128 and the main body shell 124, thereby sealing the gap between the motor cover 128 and the main body shell 124, preventing external water from entering through the gap between the motor cover 128 and the main body shell 124 and contacting the motor 19.

[0080] Even if the screw 20 of the waterproof driver of the present invention is exposed, the waterproof structure design can effectively prevent external water from entering the housing 12 of the power assembly 10 and causing damage to components, making the overall waterproof performance and safety performance of the waterproof driver better.

[0081] The waterproof grade of this waterproof driver can reach IPX4. IPX4 waterproof means that the waterproof grade is splash-proof, and liquid splashing into the grooved guide rail 50 from any direction is harmless, but it is not dust-proof.

[0082] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A waterproof driver, characterized in that: It includes a power assembly, a screw, a guide rail fixing part, a drive block and a grooved guide rail; The guide rail fixing member is arranged in the housing of the power assembly, and one end of the grooved guide rail extends into the housing of the power assembly and is fixedly connected to the guide rail fixing member; The screw is accommodated in the grooved guide rail, one end of the screw is rotatably connected to the end of the grooved guide rail, the other end of the screw passes through the guide rail fixing member and is connected to the power assembly, and the driving block is sleeved on the grooved guide rail and threadedly connected to the screw; Wherein, a waterproof ring is provided between the guide rail fixing member and the housing of the power assembly, and the waterproof ring is respectively pressed against the guide rail fixing member and the housing of the power assembly, thereby forming a seal between the guide rail fixing member and the housing of the power assembly; A wear-resistant sealing ring is provided between the guide rail fixing member and the screw rod, and the wear-resistant sealing ring is respectively pressed against the guide rail fixing member and the screw rod, thereby forming a seal between the guide rail fixing member and the screw rod; The guide rail fixing member includes a main body plate that is clamped with the housing of the power assembly, and a protrusion provided on one side of the main body plate for inserting the grooved guide rail; The guide rail fixing member is provided with a first through hole penetrating the main plate and the protrusion for the screw to pass through; The wear-resistant sealing ring includes an inner ring, a middle ring, and an outer ring connected sequentially from the inside to the outside, the inner ring is thicker than the middle ring, and the inner ring is interference fit with the outer wall of the screw, the outer ring is thicker than the middle ring, and the outer ring is interference fit with the inner wall of the first through hole; The thickness of the inner ring is greater than that of the middle ring, so that the inner ring protrudes along the thickness direction; The waterproof driver further comprises an elastic member sleeved on the inner ring, wherein the elastic member is configured to generate radial pressure on the inner ring after elastic contraction, thereby pressing the inner ring and the screw; The thickness of the outer ring is greater than that of the middle ring, so that the outer ring protrudes along the thickness direction. The outer ring and the inner ring protrude along the same direction, so that an annular accommodating space is formed between the outer ring and the inner ring, and the elastic member is arranged in the annular accommodating space.

2. The waterproof driver according to claim 1, characterized in that: The waterproof ring is arranged on the outer wall of the protrusion and is respectively pressed against the outer wall of the protrusion and the housing of the power component; the wear-resistant sealing ring is accommodated in the first through hole and is respectively pressed against the inner wall of the first through hole and the screw.

3. The waterproof driver according to claim 1, characterized in that: The elastic member is an elastic ring, a spring or a torsion spring.

4. The waterproof driver according to claim 1, characterized in that: One protruding end of the inner ring expands along the outer circumference to form a blocking portion for preventing the elastic member from falling.

5. The waterproof driver according to claim 2, characterized in that: A limiting step is provided on the side wall of the first through hole, a limiting seat is provided on the inner wall of the housing of the power assembly, and both ends of the wear-resistant sealing ring in the thickness direction abut against the limiting step and the limiting seat respectively.

6. The waterproof driver according to claim 2, characterized in that: The outer side wall of the protrusion is provided with an annular retaining groove corresponding to the waterproof ring. When the housing of the power assembly is connected to the guide rail fixing member, the waterproof ring abuts against the annular retaining groove.

7. The waterproof driver according to claim 6, characterized in that: An annular mounting groove corresponding to the waterproof ring is provided on the housing of the power assembly. When the housing of the power assembly is connected to the guide rail fixing member, the waterproof ring abuts against the annular mounting groove.

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