A device for uniformly oiling special-shaped shafts

Abstract

A device for uniformly oiling a special-shaped shaft comprises a base, an oil storage seat is provided in the base, an oil storage tank is provided inside the oil storage seat, a side cover plate is provided on one side of the oil storage tank, an outer sleeve is provided on the side cover plate, an oiling seat is fixed at the bottom of the oil storage tank, a through sleeve hole is provided inside the oiling seat, the outer sleeve extends from one side of the side cover plate and is sleeved in the sleeve hole, a slidable linkage mechanism is connected in the sleeve hole, the linkage mechanism comprises a movable block, a push rod, and a sleeve rod, an inner sleeve is provided at the front end of the sleeve rod, the push rod passes through the side wall of the oil storage seat and is sleeved in the sleeve hole, the inner sleeve extends and is sleeved in the outer sleeve, inner holes are uniformly distributed on the tube wall of the inner sleeve, the inner holes are staggered with the outer holes of the outer sleeve, the motor shaft of the electric toothbrush is inserted in the inner sleeve, the inner sleeve slides so that the inner hole is aligned with the outer hole, and the waterproof lubricating oil is squeezed into the inner sleeve to realize the uniform coating of the motor shaft. According to the utility model, the motor shaft of the electric toothbrush is conveniently, quickly, uniformly oiled, and has high oiling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly and processing of electric toothbrushes, in particular to a uniform oiling device for a special-shaped shaft. Background Art

[0002] At present, the waterproofing of the motor shaft and the toothbrush handle of the electric toothbrush is mainly achieved by the interference fit seal between the motor shaft waterproof silicone and the motor shaft. Fig.11 The sealing silicone is sleeved on the end of the motor shaft and fits on the housing. Due to the interference fit, the waterproof silicone and the motor shaft mating surface are prone to dry assembly during assembly, and the waterproof silicone cannot be smoothly assembled into place, resulting in low production efficiency or excessive force applied by employees during the waterproof silicone assembly process, causing the waterproof silicone to be damaged. To solve this problem, it is necessary to apply lubricating oil to the motor shaft in advance. Since the front half of the motor shaft is a semicircular structure, more lubricating oil will remain on the semicircular end face during oiling, resulting in the need to wipe off the residual grease after the silicone is assembled. During the wiping process, the hands of employees are also easily stained with grease, causing secondary pollution to the toothbrush handle, so the oiling position and amount of the motor shaft need to be accurately controlled. Utility Model Content

[0003] The utility model provides a device for uniformly coating oil on a special-shaped shaft, aiming to solve the problem of uniformly and quickly coating the motor shaft of the special-shaped shaft of the electric toothbrush with waterproof lubricating oil during the assembly process of the electric toothbrush.

[0004] In view of this, the technical solution provided by the utility model is as follows: a device for uniformly oiling a special-shaped shaft, comprising a base, an oil storage seat is provided at the front end of the base, an oil storage tank which is larger at the top and smaller at the bottom is provided inside the oil storage seat, a side cover is provided on one side of the oil storage tank, an outer sleeve is provided on the side cover, outer holes are evenly distributed on the tube wall of the outer sleeve, the outer holes are communicated with the oil storage tank, an oiling seat is fixed at the bottom of the oil storage tank, a through sleeve hole is provided inside the oiling seat, the outer sleeve extends from one side of the side cover plate and is sleeved in the sleeve hole, a slidable linkage mechanism is connected in the sleeve hole, and the linkage mechanism includes a movable block A push rod is connected to the movable block, a sleeve rod is provided at the front end of the push rod, an inner sleeve is provided at the front end of the sleeve rod, the push rod passes through the side wall of the oil storage seat and is sleeved in the sleeve hole, the inner sleeve extends and is sleeved in the outer sleeve, inner holes are evenly distributed on the tube wall of the inner sleeve, the inner holes are staggered with the outer holes, the motor shaft of the electric toothbrush is inserted into the inner sleeve through the outer sleeve, the linkage mechanism is slid, and the inner sleeve slides so that the inner hole is aligned with the outer hole, and the waterproof lubricating oil stored in the oil storage tank is squeezed into the inner sleeve through the outer hole and the inner hole to achieve uniform coating of the motor shaft.

[0005] Furthermore, a slider is installed at the bottom of the movable block, and a slide rail corresponding to the slider is provided on the base. The slider is slidably matched with the slide rail, and the movable block slides on the slide rail through the slider.

[0006] Furthermore, a baffle is provided on the base, and a pair of springs are installed on the baffle, and the springs are connected to the movable block. After the motor shaft is oiled, the linkage mechanism uses the pair of springs on the baffle to ensure that the device can achieve automatic reset of the inner sleeve after the motor shaft is oiled, so that the inner hole of the inner sleeve and the outer hole of the outer sleeve are staggered, thereby preventing the waterproof lubricating oil in the oil storage tank from being squeezed into the inner sleeve when not in use.

[0007] Furthermore, a pair of rotating shaft brackets are provided on the base, and a connecting rod is provided between the rotating shaft brackets to rotate through the rotating shaft. The connecting rod is an L-shaped structure, and a pressure plate with an adjustment rod is provided at one end of the connecting rod. The pressure plate presses against the upper part of the oil storage tank, and the other end of the connecting rod presses against the movable block. After the motor shaft is inserted into the inner sleeve, the connecting rod abuts against the movable block and rotates with the rotating shaft as the axis during the movement of the corresponding movable block. The rotation of the connecting rod causes the pressure plate to squeeze the paste-like waterproof lubricating oil in the oil storage tank. Therefore, under the action of the pressure plate, the waterproof lubricating oil is squeezed through the outer hole of the outer sleeve and squeezed into the inner sleeve through the inner hole of the inner sleeve to achieve uniform coating of the motor shaft.

[0008] Furthermore, the movable block is provided with a sloped surface on its upper portion, and the connecting rod is provided with a sloped end portion corresponding to the sloped surface. The connecting rod is fitted onto the sloped surface through the sloped end portion. During the movement of the movable block, the connecting rod rotates through the rotating shaft so that the pressure plate can better squeeze the waterproof lubricating oil in the oil storage tank.

[0009] Further, the sleeve hole includes a first sleeve hole sleeved with the outer sleeve and a second sleeve hole sleeved with the push rod, a sleeve rod hole connected with the sleeve rod is provided between the first sleeve hole and the second sleeve hole, a step surface for limiting the sliding of the inner sleeve is provided between the first sleeve hole and the sleeve rod hole, and a step surface for limiting the reset of the push rod is provided between the second sleeve hole and the sleeve rod hole. After the motor shaft is inserted into the inner sleeve, the inner sleeve is limited by the step surface between the first sleeve hole and the sleeve rod hole, so that the inner hole of the inner sleeve and the outer hole of the outer sleeve are aligned, thereby ensuring that the waterproof lubricating oil enters the inner sleeve, and when the electric toothbrush is pulled out of the inner sleeve, the movable block is reset by the spring, and the push rod is limited by the step surface between the second sleeve hole and the sleeve rod hole, so that the inner hole of the inner sleeve and the outer hole of the outer sleeve are staggered, so as to avoid the waterproof lubricating oil in the oil storage tank from the outer hole of the outer sleeve to enter the inner sleeve when the device is not in use.

[0010] The utility model has an oil storage tank filled with waterproof lubricating oil, which is a paste-like semi-solid substance. When the motor shaft of the electric toothbrush is oiled, the motor shaft of the electric toothbrush is inserted into the inner sleeve through the outer sleeve. During the insertion process of the motor shaft, the inner sleeve slides inside the oiling seat and is limited by the step surface between the first sleeve hole and the sleeve rod hole. At this time, the outer hole on the outer sleeve and the inner hole of the inner sleeve are aligned with each other, so that the waterproof lubricating oil can enter the inner sleeve through the outer hole-inner hole and realize the oiling of the motor shaft. At the same time, during the sliding process, the inner sleeve pushes the movable block in the opposite direction through the sleeve rod-push rod, so that the movable block slides along the slide rail. During the sliding process of the movable block along the slide rail, it also drives the abutting connecting rod, and the connecting rod rotates with the rotating shaft as the fulcrum. During the rotation, the pressing plate connected to the connecting rod moves downward, and the pressing plate presses the waterproof lubricating oil of the paste-like semi-solid substance downward from the top, so that the waterproof lubricating oil can better enter the inner sleeve through the outer hole-inner hole to coat the motor shaft.

[0011] According to the utility model, after the motor shaft is coated as described above, the linkage mechanism uses the spring connected to the baffle to achieve reset. Under the action of the spring, the movable block slides and resets along the slide rail, and the movable block drives the push rod, which is limited by the step surface between the second set of holes and the sleeve rod hole, so that the inner hole of the inner sleeve and the outer hole of the outer sleeve are staggered, which can prevent the waterproof lubricating oil in the oil storage tank from being squeezed into the inner sleeve from the outer hole of the outer sleeve when the device is not in use. At the same time, the sliding reset of the movable block and the synchronous reset of the connecting rod under the action of gravity, the rotation of the connecting rod causes the pressure plate to be raised, and the surface pressure of the waterproof lubricating oil is suddenly reduced. Therefore, the waterproof lubricating oil will not be squeezed into the inner sleeve. Therefore, the electric toothbrush is convenient and quick to oil, which greatly improves the efficiency of oiling.

[0012] In the utility model, the pressing plate can be adjusted according to the consumption of the waterproof lubricating oil through the adjusting rod on the pressing plate, so as to ensure that the pressing plate squeezes the waterproof lubricating oil with an appropriate amount of pressure during the oiling process.

[0013] In the utility model, since the inner holes are evenly arranged on the tube wall of the inner sleeve, during the plugging process of the electric toothbrush, the evenly arranged inner holes are used to provide waterproof lubricating oil, thereby ensuring that the motor shaft of the electric toothbrush is evenly oiled. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the three-dimensional structural schematic diagrams of the utility model.

[0015] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 3 It is a schematic cross-sectional view of the internal structure of the utility model.

[0017] Figure 4 for Figure 1 Main view.

[0018] Figure 5 for Figure 4 Schematic diagram of the local enlargement of AA in the middle.

[0019] Figure 6 This is a schematic diagram of the utility model in use.

[0020] Figure 7 This is one of the three-dimensional structural diagrams of the linkage mechanism.

[0021] Figure 8 This is the second schematic diagram of the three-dimensional structure of the linkage mechanism.

[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure of the oiling seat.

[0023] Fig.10 It is a schematic diagram of the cross-section of the internal structure of the oiling seat.

[0024] Fig.11 It is a schematic diagram of the three-dimensional structure of an electric toothbrush.

[0025] Among them: 1-base, 11-rotating shaft bracket, 12-rotating shaft, 13-slide rail, 14-slider, 15-baffle, 16-spring, 2-oil storage seat, 21-oil storage tank, 3-connecting rod, 4-side cover, 5-outer sleeve, 51-outer hole, 6-pressure plate, 61-adjusting rod, 7-linking mechanism, 71-movable block, 711-inclined surface, 712-spring groove, 713-spring shaft, 72-push rod, 73-sleeve rod, 74-inner sleeve, 741-inner hole, 8-oiling seat, 81-sleeve hole, 811-first set of holes, 812-second set of holes, 813-sleeve rod hole, 9-electric toothbrush, 91-motor shaft. DETAILED DESCRIPTION

[0026] The following is a brief description of the implementation of the present utility model in conjunction with the accompanying drawings.

[0027] A device for uniformly oiling a special-shaped shaft, referring to 1- Figure 4, including a base 1, an oil storage seat 2 is provided on the front end of the base 1, an oil storage tank 21 with a larger upper part and a smaller lower part is provided inside the oil storage seat 2, a side cover plate 4 is provided on one side of the oil storage tank 21, and the side cover plate 4 is installed on the oil storage seat 2 connected by bolts, so that the side wall of the oil storage tank 21 is airtight, and the oil storage tank 21 is used to place a paste-like semi-solid waterproof lubricating oil similar to vaseline, an outer sleeve 5 is provided on the side cover plate 4, and outer holes 51 are evenly distributed on the tube wall of the outer sleeve 5, and the outer holes 51 are communicated with the oil storage tank 21, and an oiling seat 8 is fixed at the bottom of the oil storage tank 21, and the length of the oiling seat 8 is less than the distance between the front and rear side walls of the oil storage tank 21, and the oiling seat 8 is fixed to the rear side wall of the oil storage tank 21 by bolts, and a through sleeve hole 81 is provided inside the oiling seat 8, and the outer sleeve 5 extends from one side of the side cover plate 4 and is sleeved in the sleeve hole 81, and a slidable linkage mechanism 7 is connected in the sleeve hole 81, refer to Figure 7 , Figure 8 The linkage mechanism 7 includes a movable block 71, a slider 14 is installed at the bottom of the movable block 71, and the movable block 71 is slidably connected to the slide rail 13 of the base 1 through the slider 14, so that the movable block 71 and the base 1 are slidably connected. A push rod 72 is connected to the movable block 71, and a sleeve rod 73 is provided at the front end of the push rod 72. An inner sleeve 74 is provided at the front end of the sleeve rod 73. The push rod 72 passes through the side wall of the oil storage seat 2 and is sleeved in the sleeve hole 81. The inner sleeve 74 extends and is sleeved in the outer sleeve 5. The inner holes 741 are evenly distributed on the tube wall of the inner sleeve 74, and the inner holes 741 are staggered with the outer holes 51. Specifically, refer to Figure 5 , Fig. 9 , Fig.10 The sleeve hole 81 of the oiling seat 8 includes a first sleeve hole 811, a second sleeve hole 812 and a sleeve rod hole 813. The first sleeve hole 811 is fixedly sleeved with the outer sleeve 5, and the second sleeve hole 812 is slidably sleeved with the push rod 72. The sleeve rod hole 813 is used to flexibly connect the sleeve rod 73. There is a step surface between the first sleeve hole 811 and the sleeve rod hole 813 for limiting the sliding of the inner sleeve 74, and there is a step surface between the second sleeve hole 812 and the sleeve rod hole 813 for limiting the reset of the push rod 72. The motor shaft 91 of the electric toothbrush 9 is inserted into the inner sleeve 74 through the outer sleeve 5, and the inner sleeve 74 drives the sliding linkage mechanism 7. After the inner sleeve 74 slides, the inner hole 741 is aligned with the outer hole 51, and the waterproof lubricating oil stored in the oil storage tank 21 is squeezed into the inner sleeve 74 through the outer hole 51 and the inner hole 741 to achieve uniform coating of the motor shaft 91.

[0028] A pair of rotating shaft brackets 11 are provided on the base 1, and a connecting rod 3 is provided on the rotating shaft bracket 11 to rotate through a rotating shaft 12. The connecting rod 3 is an L-shaped structure, and a pressing plate 6 with an adjusting rod 61 is provided at one end of the connecting rod 3. The connecting rod 3 and the pressing plate 6 are connected by a threaded adjustable connection of the adjusting rod 61. The pressing plate 6 presses against the upper part of the oil storage tank 21, and the pressing plate 6 can apply pressure to the waterproof lubricating oil in the oil storage tank 21. The pressing plate 6 can be adjusted according to the consumption of the waterproof lubricating oil, thereby ensuring that the pressing plate 6 squeezes the waterproof lubricating oil with an appropriate amount of pressure during the oiling process, so that the waterproof lubricating oil can be better squeezed into the inner sleeve 74. The other end of the connecting rod 3 presses against the movable block 71, and the pressure applied by the pressing plate 6 to the oil storage tank 21 is utilized The lever principle of the connecting rod 3 is realized. After the motor shaft 91 is inserted into the inner sleeve 74, it passes through the moving linkage mechanism 7. During the movement of the corresponding movable block 71, the connecting rod 3 abutting against the movable block 71 rotates with the rotating shaft 12 as the axis. The rotation of the connecting rod 3 enables the pressure plate 6 to squeeze the paste-like waterproof lubricating oil in the oil storage tank 21, thereby realizing the pressurization of the waterproof lubricating oil squeezed on the pressure plate 6. In order to better realize the linkage effect between the movable block 71 and the connecting rod 3, the movable block 71 is provided with a slope 711 on its upper part, and the connecting rod 3 is provided with an oblique end corresponding to the oblique surface 711. The connecting rod 3 is fitted on the oblique surface 711 through the oblique end. During the movement of the movable block 71, the connecting rod 3 rotates through the rotating shaft 12 so that the pressure plate 6 can better squeeze the waterproof lubricating oil in the oil storage tank 21.

[0029] When implementing it, refer to Figure 6 , insert the motor shaft 91 of the electric toothbrush 9 into the inner sleeve 74 through the outer sleeve 5. During the insertion of the motor shaft 91, the inner sleeve 74 slides inside the oiling seat 8 and is limited by the step surface between the first sleeve hole 811 and the sleeve rod hole 813. At this time, the outer hole 51 on the outer sleeve 5 and the inner hole 741 of the inner sleeve 74 are aligned, so that the waterproof lubricating oil can enter the inner sleeve 74 through the outer hole 51-inner hole 741 and realize the oiling of the motor shaft 91. At the same time, the inner sleeve 74 slides During the movement, the movable block 71 is pushed in the opposite direction by the sleeve rod 73-push rod 72, so that the movable block 71 slides along the slide rail 13. During the sliding of the movable block 71 along the slide rail 13, the connecting rod 3 is also driven to abut against it. The connecting rod 3 rotates with the rotating shaft 12 as a fulcrum. When rotating, the pressure plate 6 connected to the connecting rod 3 moves downward, and the pressure plate 6 presses the waterproof lubricating oil of the paste-like semi-solid from the top, so that the waterproof lubricating oil can better pass through the outer hole 51-inner hole 741 into the inner sleeve 74 to be coated on the motor shaft 91.

[0030] In this embodiment, a structure for resetting the linkage mechanism 7 is provided on the base 1. A baffle 15 is provided on the base 1. A pair of springs 16 are installed on the baffle 15. The springs 16 are connected to the movable block 71. A pair of spring grooves 712 corresponding to the springs 16 are provided on the movable block 71. A spring shaft 713 is provided inside the spring groove 712. The spring 16 is sleeved in the spring groove 712 and fixed by the spring shaft 713. After the motor shaft 91 is oiled, the linkage mechanism 7 uses the pair of springs 16 on the baffle 15. The spring 16 pushes the movable block 71. The movable block 71 slides and resets along the slide rail 13. The movable block 71 The push rod 72 is driven and limited by the step surface between the second sleeve hole 812 and the sleeve rod hole 813. By utilizing the limit, when plugged in, the inner hole 741 of the inner sleeve 74 and the outer hole 51 of the outer sleeve 5 are staggered, so that when the device is not in use, the waterproof lubricating oil in the oil storage tank 21 is prevented from being squeezed into the inner sleeve 74 from the outer hole 51 of the outer sleeve 5. At the same time, the sliding reset of the movable block 71 and the synchronous reset of the connecting rod 3 under the action of gravity, the rotation of the connecting rod 3 causes the pressure plate 6 to be lifted, and the surface pressure of the waterproof lubricating oil is suddenly reduced. Therefore, the waterproof lubricating oil will not be squeezed into the inner sleeve 74.

[0031] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A device for uniformly oiling a special-shaped shaft, characterized in that: The invention comprises a base, an oil storage seat is provided at the front end of the base, an oil storage tank which is larger at the top and smaller at the bottom is provided inside the oil storage seat, a side cover is provided on one side of the oil storage tank, an outer sleeve is provided on the side cover, outer holes are evenly distributed on the tube wall of the outer sleeve, the outer holes are communicated with the oil storage tank, an oiling seat is fixed at the bottom of the oil storage tank, a through sleeve hole is provided inside the oiling seat, the outer sleeve extends from one side of the side cover plate and is sleeved in the sleeve hole, a slidable linkage mechanism is connected in the sleeve hole, the linkage mechanism comprises a movable block, a push rod is connected to the movable block, the A sleeve rod is provided at the front end of the push rod, and an inner sleeve is provided at the front end of the sleeve rod. The push rod passes through the side wall of the oil storage seat and is sleeved in the sleeve hole. The inner sleeve extends and is sleeved in the outer sleeve. Inner holes are evenly distributed on the tube wall of the inner sleeve. The inner holes are staggered with the outer holes. The motor shaft of the electric toothbrush is inserted into the inner sleeve through the outer sleeve, and the linkage mechanism is slid. After the inner sleeve slides, the inner hole is aligned with the outer hole, and the waterproof lubricating oil stored in the oil storage tank is squeezed into the inner sleeve through the outer hole via the inner hole to achieve uniform coating of the motor shaft.

2. According to claim 1, a device for uniformly oiling a special-shaped shaft is characterized in that: A slider is installed at the bottom of the movable block, and a slide rail corresponding to the slider is provided on the base. The slider is slidably matched with the slide rail, and the movable block slides on the slide rail through the slider.

3. According to claim 1, a device for uniformly oiling a special-shaped shaft is characterized in that: A baffle is provided on the base, a pair of springs are installed on the baffle, and the springs are connected to the movable block.

4. The device for uniformly oiling a special-shaped shaft according to claim 1, characterized in that: A pair of rotating shaft brackets are provided on the base, and a connecting rod is provided between the rotating shaft brackets to rotate through the rotating shaft. The connecting rod is an L-shaped structure, and a pressure plate with an adjusting rod is provided at one end of the connecting rod. The pressure plate presses against the upper part of the oil storage tank, and the other end of the connecting rod presses against the movable block.

5. The device for uniformly applying oil to a special-shaped shaft according to claim 4, characterized in that: The movable block has an inclined surface on its upper part, and the connecting rod is provided with an inclined end portion corresponding to the inclined surface.

6. The device for uniformly oiling a special-shaped shaft according to claim 1, characterized in that: The sleeve hole includes a first sleeve hole sleeved with the outer sleeve and a second sleeve hole sleeved with the push rod, a sleeve rod hole connected to the sleeve rod is provided between the first sleeve hole and the second sleeve hole, a step surface is provided between the first sleeve hole and the sleeve rod hole for limiting the sliding of the inner sleeve, and a step surface is provided between the second sleeve hole and the sleeve rod hole for limiting the reset of the push rod.

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