Gearbox motor for plunger pump of oral irrigator

Abstract

The utility model discloses a gear box motor for a plunger pump of a water pick, which belongs to the field of gear box motors, comprises a motor casing and is characterized in that a rotating shaft is rotatably connected inside the motor casing, a rotor is fixedly connected outside the rotating shaft, a stator magnet is arranged outside the rotor, and a stator is arranged outside the stator magnet. A positioning mechanism is arranged outside the motor shell, the positioning mechanism comprises an insertion block, the insertion block is fixedly connected with the motor shell, a spring, a positioning rod and the insertion block are arranged, the insertion block is inserted into the inner gear ring to position the inner gear ring and the motor shell, and then the spring supports the positioning rod; and the spring is limited by the positioning rod, so that the problem that the screw is still loosened even if the screw is coated with screw glue under long-time impact load when the gear box and the motor are connected by a traditional oral irrigator is solved, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear box motor, in particular to a gear box motor for oral irrigator plunger pump. BACKGROUND

[0002] The oral irrigator is an auxiliary tool for cleaning the oral cavity, which uses the method of pulse water flow impact to clean the teeth and gaps, just as people know that high-pressure water gun can easily wash the car, and the water flow with appropriate pressure has been proved to effectively clean people's teeth and oral cavity, wherein the plunger pump is driven by the gear box motor.

[0003] At present, the traditional oral irrigator usually uses screws to fix when connecting the gear box and the motor, but the screws will loosen even if they are coated with screw glue under long-term impact load. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the utility model provides a gear box motor for oral irrigator plunger pump, which overcomes the defects of the prior art and aims to solve the problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: a gear box motor for oral irrigator plunger pump, comprising a motor housing, a rotating shaft is rotatably connected inside the motor housing, a rotor is fixedly connected outside the rotating shaft, a stator magnet is arranged outside the rotor, a positioning mechanism is arranged outside the motor housing, the positioning mechanism comprises an insertion block, the insertion block is fixedly connected with the motor housing, two positioning rods are slidably connected inside the insertion block, the two positioning rods are symmetrically distributed inside the insertion block, a spring is fixedly connected between the two positioning rods, a driving gear is fixedly connected to the top of the rotating shaft, an inner gear ring is slidably connected to the top of the motor housing, a flange face is fixedly connected to the top of the inner gear ring, a first planetary carrier and a second planetary carrier are rotatably connected inside the inner gear ring, the first planetary carrier and the second planetary carrier are evenly distributed inside the inner gear ring, an output planetary carrier is arranged at the top of the second planetary carrier, the output planetary carrier is rotatably connected with the inner gear ring, an output shaft is fixedly connected to the side of the output planetary carrier away from the second planetary carrier, an output gear is arranged between the second planetary carrier and the output planetary carrier, and the output gear is rotatably connected with the output planetary carrier.

[0006] As a preferred embodiment, an epoxy resin adhesion layer is arranged between the stator magnet and the motor housing.

[0007] By adopting the technical scheme, the stator magnet is fixed in the motor housing through the epoxy resin adhesive layer, avoiding the existing direct current micro motor clamping and fixing the tile-shaped magnet by the elastic force of the snap spring, and the magnet and the snap spring are prone to axial or radial displacement when subjected to frequent impact and vibration, so that the stator magnet can be better fixed with the motor housing, and the impact resistance is high and the fastening is not loose.

[0008] As a preferred implementation form, the bottom of the first planet carrier and the bottom of the second planet carrier are rotationally connected with planet gears, and the top of the first planet carrier and the top of the second planet carrier are fixedly connected with sun gears; the planet gear at the bottom of the second planet carrier meshes with the sun gear at the top of the first planet carrier, and the sun gear at the top of the second planet carrier meshes with the output gear.

[0009] By adopting the technical scheme, the planet gear at the bottom of the first planet carrier is rotationally driven by the driving gear on the surface of the rotating shaft, the first planet carrier and the sun gear at the top of the first planet carrier are rotationally driven by the planet gear at the bottom of the first planet carrier, the planet gear at the bottom of the second planet carrier is rotationally driven by the sun gear at the top of the first planet carrier, the second planet carrier and the sun gear at the top of the second planet carrier are rotationally driven by the planet gear at the bottom of the second planet carrier, the output gear and the output planet carrier are rotationally driven by the sun gear at the top of the second planet carrier, and the output shaft is rotationally driven by the output planet carrier, so that the output shaft can be rotationally driven more stably, and the torque of the output shaft can be increased.

[0010] As a preferred implementation form, the motor housing and the inner ring gear are provided with a connecting plate, and the connecting plate is laser-welded on the top of the motor housing.

[0011] By adopting the technical scheme, the connecting plate is laser-welded on the top of the motor housing, so that the connecting plate and the motor housing can be better fixed, and the impact resistance is high and the fastening is not loose.

[0012] As a preferred implementation form, the surface of the output planet carrier is provided with two double-taper holes with an interlaced angle, the surface of the output shaft is provided with double-tapered positions, the double-tapered positions are matched with the double-taper holes, and the output shaft can freely rotate by a certain angle in the double-taper holes.

[0013] By adopting the technical scheme, the surface of the output planet carrier is provided with two double-taper holes with an interlaced angle, and the double-tapered positions at the bottom of the output shaft are inserted into the double-taper holes, so that the output shaft can be rotationally driven, the threaded holes on the shaft can be aligned with the customer's mechanism parts, and screws can be locked in the threaded holes for the convenience of customer assembly.

[0014] As a preferred implementation form, the surface of the output shaft is provided with a mounting threaded hole, and a bearing is arranged between the output shaft and the output planet carrier, and the inner ring of the bearing is fixedly connected with the output shaft.

[0015] By fixing the inner ring of the bearing with the output shaft, the output shaft can rotate better inside the flange surface and the inner tooth ring.

[0016] As a preferred implementation form, the flange surface and the inner tooth ring are integrally formed, and the surface of the flange surface is provided with an undercut.

[0017] By providing the surface of the flange surface with an undercut, and by fastening the undercut on the outside of the bearing, the output shaft is subjected to a cyclically changing axial outward pulling force during the operation of the motor, and the bearing cooperating with the output shaft is limited by the undercut to prevent the bearing from loosening and falling out, so that the bearing can be better limited.

[0018] The beneficial effects of the present application are:

[0019] 1. The gear box motor for the oral irrigator plunger pump is provided with a spring, a positioning rod and an insertion block, the inner tooth ring and the motor shell are positioned by inserting the insertion block into the inner tooth ring, the spring supports the positioning rod, and the positioning rod limits the spring, avoiding the problem that the traditional oral irrigator usually uses screws to fix the gear box and the motor, but the screws will loosen even if they are coated with screw glue under long-term impact load, thereby improving the practicality.

[0020] 2. The gear box motor for the oral irrigator plunger pump is provided with a first planet carrier, a driving gear, a planet gear, a sun gear and a second planet carrier, the planet gear at the bottom of the first planet carrier is driven to rotate by rotating the driving gear on the surface of the rotating shaft, the planet gear at the bottom of the first planet carrier drives the sun gear at the top of the first planet carrier to rotate, the sun gear at the top of the first planet carrier drives the planet gear at the bottom of the second planet carrier to rotate, the planet gear at the bottom of the second planet carrier drives the sun gear at the top of the second planet carrier to rotate, the sun gear at the top of the second planet carrier drives the output gear and the output planet carrier to rotate, and the output planet carrier drives the output shaft to rotate, thereby avoiding the problem that the traditional gear box cannot make the output shaft rotate smoothly and increase the torque of the output shaft, and improving the practicality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front structure schematic diagram of the present application;

[0022] Figure 2 It is an expanded structure schematic diagram of the present application;

[0023] Figure 3 The output planet carrier structure schematic diagram of the present application;

[0024] Figure 4 The motor shell structure section view schematic diagram of the present application.

[0025] Figure label: 1, motor shell; 2, connecting plate; 3, positioning mechanism; 31, spring; 32, positioning rod; 33, insertion block; 4, rotor; 5, rotating shaft; 6, stator magnet; 7, epoxy resin adhesion layer; 8, driving gear; 9, first planet carrier; 10, sun gear; 11, planetary gear; 12, output planet carrier; 13, output gear; 14, output shaft; 15, mounting threaded hole; 16, flange face; 17, inner ring gear; 18, double flat hole; 19, second planet carrier. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0027] Referring to Figures 1-4 A gear box motor for oral irrigator plunger pump comprises a motor shell 1, a rotating shaft 5 is rotatably connected inside the motor shell 1, a rotor 4 is fixedly connected outside the rotating shaft 5, a stator magnet 6 is arranged outside the rotor 4, and an epoxy resin adhesion layer 7 is arranged between the stator magnet 6 and the motor shell 1. The stator magnet 6 is fixed inside the motor shell 1 through the epoxy resin adhesion layer 7, avoiding that the existing direct current micro motor clamps and fixes the tile-shaped magnet by the elastic force of the snap spring. The magnet and the snap spring are prone to axial or radial displacement when subjected to frequent impact and vibration, and the stator magnet 6 and the motor shell 1 can be better fixed, the impact resistance is strong, and the motor shell 1 is not loose.

[0028] Referring to Figures 1-2 A positioning mechanism 3 is arranged outside the motor shell 1, the positioning mechanism 3 comprises an insertion block 33, the insertion block 33 is fixedly connected with the motor shell 1, two positioning rods 32 are slidably connected inside the insertion block 33, the two positioning rods 32 are symmetrically distributed inside the insertion block 33, a spring 31 is fixedly connected between the two positioning rods 32, and a driving gear 8 is fixedly connected to the top of the rotating shaft 5.

[0029] Referring to Figures 1-4The top of the motor shell 1 is slidably connected with an inner gear ring 17, the top of the inner gear ring 17 is fixedly connected with a flange face 16, the inner part of the inner gear ring 17 is rotatably connected with a first planetary carrier 9 and a second planetary carrier 19, the first planetary carrier 9 and the second planetary carrier 19 are evenly distributed in the inner part of the inner gear ring 17, the top of the second planetary carrier 19 is provided with an output planetary carrier 12, the output planetary carrier 12 is rotatably connected with the inner gear ring 17, the side, away from the second planetary carrier 19, of the output planetary carrier 12 is fixedly connected with an output shaft 14, and an output gear 13 is arranged between the second planetary carrier 19 and the output planetary carrier 12, and the output gear 13 is rotatably connected with the output planetary carrier 12.

[0030] With reference to Figures 2-4 The bottom of the first planetary carrier 9 and the second planetary carrier 19 is rotatably connected with a planetary gear 11, and the top of the first planetary carrier 9 and the second planetary carrier 19 is fixedly connected with a sun gear 10; the planetary gear 11 at the bottom of the second planetary carrier 19 is meshed with the sun gear 10 at the top of the first planetary carrier 9, and the sun gear 10 at the top of the second planetary carrier 19 is meshed with the output gear 13; the planetary gear 11 at the bottom of the first planetary carrier 9 is driven to rotate by the driving gear 8 on the surface of the rotating shaft 5, the first planetary carrier 9 and the sun gear 10 at the top of the first planetary carrier 9 are driven to rotate by the planetary gear 11 at the bottom of the first planetary carrier 9, the planetary gear 11 at the bottom of the second planetary carrier 19 is driven to rotate by the sun gear 10 at the top of the first planetary carrier 9, the second planetary carrier 19 and the sun gear 10 at the top of the second planetary carrier 19 are driven to rotate by the planetary gear 11 at the bottom of the second planetary carrier 19, the output gear 13 and the output planetary carrier 12 are driven to rotate by the sun gear 10 at the top of the second planetary carrier 19, and the output shaft 14 is driven to rotate by the output planetary carrier 12, so that the output shaft 14 can rotate stably and the torque of the output shaft 14 can be increased.

[0031] With reference to Figure 4 The connecting plate 2 is laser-welded on the top of the motor shell 1, so that the connecting plate 2 and the motor shell 1 can be fixed and are not easy to be loosened.

[0032] With reference to Figures 2-3 A mounting threaded hole 15 is formed in the surface of the output shaft 14, a bearing is arranged between the output shaft 14 and the output planetary carrier 12, and the inner ring of the bearing is fixedly connected with the output shaft 14, so that the output shaft 14 can rotate in the inner part of the flange face 16 and the inner gear ring 17.

[0033] With reference to Figure 3The surface of the output planet carrier 12 is provided with two double flat holes 18 staggered at an angle, the surface of the output shaft 14 is provided with double flats, the double flats are matched with the double flat holes 18, and the output shaft 14 can rotate at a certain angle in the double flat holes 18; by providing the surface of the output planet carrier 12 with two double flat holes 18 staggered at an angle, and inserting the double flats at the bottom of the output shaft 14 into the double flat holes 18, the output planet carrier 12 and the output shaft 14 have a virtual position with an angle A on the circumference, which can better rotate the output shaft 14, align the threaded holes on the shaft with the customer's mechanism parts, and lock the screws in the threaded holes for installation, facilitating the customer's assembly.

[0034] With reference to Figure 2 The flange surface 16 and the inner ring gear 17 are integrally formed, and the surface of the flange surface 16 is provided with an undercut; by providing the surface of the flange surface 16 with an undercut, and by clamping the undercut on the outside of the bearing, the output shaft 14 has a cyclically changing axial outward pulling force during the operation of the motor, the bearing matched with the output shaft 14 is limited by the undercut, preventing the bearing from loosening and falling out, and the bearing can be better limited.

[0035] Working principle: the stator magnet 6 is fixed in the motor housing 1 through the epoxy adhesive layer 7, avoiding the existing direct current micro motor clamping and fixing the tile-shaped magnet by the elastic force of the snap spring, the magnet and the snap spring are easy to be axially or radially displaced when frequently impacted and vibrated, the rotating shaft 5 is rotated by the rotation of the rotor 4, the driving gear 8 is rotated by the rotation of the rotating shaft 5, the planetary gear 11 at the bottom of the first planet carrier 9 is rotated by the rotation of the driving gear 8, the first planet carrier 9 and the sun gear 10 at the top of the first planet carrier 9 are rotated by the rotation of the planetary gear 11 at the bottom of the first planet carrier 9, the sun gear 10 at the top of the first planet carrier 9 is rotated to drive the planetary gear 11 at the bottom of the second planet carrier 19, the second planet carrier 19 and the sun gear 10 at the top of the second planet carrier 19 are rotated by the rotation of the planetary gear 11 at the bottom of the second planet carrier 19, the output gear 13 and the output planet carrier 12 are rotated by the rotation of the sun gear 10 at the top of the second planet carrier 19, the output shaft 14 is rotated by the rotation of the output planet carrier 12, the inner gear ring 17 and the motor housing 1 are positioned by inserting the plug-in block 33 into the inner gear ring 17, the spring 31 supports the positioning rod 32, the spring 31 is limited by the positioning rod 32, the surface of the output planet carrier 12 is provided with two double flat position holes 18 with an interlaced angle, the output planet carrier 12 and the output shaft 14 are in the virtual position with an angle A on the circumference, the output shaft 14 can be better rotated, the threaded hole on the shaft is aligned with the customer's mechanism parts, and the threaded hole is locked with a screw, so that the customer can assemble, the surface of the flange face 16 is provided with a reverse buckle, the reverse buckle is buckled on the outside of the bearing, the output shaft 14 is subjected to a cyclic change in the process of motor operation, and the axial pulling force is always outward, the bearing matched with the output shaft 14 is limited by the reverse buckle, and the bearing is prevented from loosening and falling out.

[0036] In the description of the utility model, it is to be explained that the position relation or position relation indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is based on the position relation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mounts", "is provided with", "connects" and the like should be understood broadly, for example, "connects", can be fixedly connected, also can be detachably connected, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific conditions by the person skilled in the art.

[0038] The utility model has been described above in combination with specific embodiments, but the person skilled in the art should know that these descriptions are exemplary, and are not the limitation of the protection scope of the utility model.The person skilled in the art can make various modifications and changes to the utility model according to the spirit and principle of the utility model, and these modifications and changes are also within the scope of the utility model.

Claims

1. A gear case motor for oral irrigator plunger pump comprising a motor housing (1), characterized in that, The inside of the motor shell (1) is rotatably connected with a rotating shaft (5), the outside of the rotating shaft (5) is fixedly connected with a rotor (4), the outside of the rotor (4) is provided with a stator magnet (6), the outside of the motor shell (1) is provided with a positioning mechanism (3), the positioning mechanism (3) comprises an insertion block (33), the insertion block (33) is fixedly connected with the motor shell (1), the inside of the insertion block (33) is slidably connected with two positioning rods (32), the two positioning rods (32) are symmetrically distributed in the inside of the insertion block (33), the two positioning rods (32) are fixedly connected with a spring (31), the top of the rotating shaft (5) is fixedly connected with a driving gear (8), the top of the motor shell (1) is slidably connected with an inner gear ring (17), the top of the inner gear ring (17) is fixedly connected with a flange face (16), the inside of the inner gear ring (17) is rotatably connected with a first planetary carrier (9) and a second planetary carrier (19), the first planetary carrier (9) and the second planetary carrier (19) are evenly distributed in the inside of the inner gear ring (17), the top of the second planetary carrier (19) is provided with an output planetary carrier (12), the output planetary carrier (12) is rotatably connected with the inner gear ring (17), the side, away from the second planetary carrier (19), of the output planetary carrier (12) is fixedly connected with an output shaft (14), the second planetary carrier (19) and the output planetary carrier (12) are provided with an output gear (13), the output gear (13) is rotatably connected with the output planetary carrier (12).

2. A gear case motor for a waterpik plunger pump according to claim 1, wherein, The stator magnet (6) and the motor shell (1) are provided with an epoxy resin adhesion layer (7).

3. A gear case motor for a waterpik plunger pump according to claim 1, wherein, The surface of the output shaft (14) is provided with a mounting threaded hole (15), the output shaft (14) and the output planetary carrier (12) are provided with a bearing, the inner ring of the bearing is fixedly connected with the output shaft (14).

4. A gear case motor for a waterpik plunger pump according to claim 1, wherein, The bottom of the first planetary carrier (9) and the second planetary carrier (19) is rotatably connected with a planetary gear (11), the top of the first planetary carrier (9) and the second planetary carrier (19) is fixedly connected with a sun gear (10), the planetary gear (11) at the bottom of the second planetary carrier (19) is engaged with the sun gear (10) at the top of the first planetary carrier (9), the sun gear (10) at the top of the second planetary carrier (19) is engaged with the output gear (13).

5. A gear case motor for a waterpik plunger pump according to claim 1, wherein, The motor shell (1) and the inner gear ring (17) are provided with a connecting plate (2), the connecting plate (2) is laser welded on the top of the motor shell (1).

6. A gear case motor for a waterpik plunger pump according to claim 1, wherein, The surface of the output planetary carrier (12) is provided with two double flat position holes (18) with an interlaced angle, the surface of the output shaft (14) is provided with a double flat position, the double flat position is matched with the double flat position hole (18), and the output shaft (14) can freely rotate a certain angle in the double flat position hole (18).

7. A gear case motor for oral irrigator plunger pump according to claim 3, characterized in that, The flange face (16) and the inner gear ring (17) are integrally formed, the surface of the flange face (16) is provided with an undercut.

Images