Hub motor mechanism capable of preventing displacement or falling

Abstract

The utility model discloses a wheel hub motor mechanism capable of preventing displacement or falling, which comprises a motor assembly and a rubber assembly, and the motor assembly comprises a motor body, a connecting clamping groove, a mounting convex part, a mounting hole, a mounting screw, a groove, an end cover, a positioning pull ring, an elastic piece and an anti-deviation sleeve. Through the above mode, the wheel hub motor mechanism capable of preventing displacement or falling not only improves the accuracy and stability of connection between the rubber sleeve and the motor assembly, and between the end cover and the motor assembly, but also can improve the assembly efficiency and prolong the service life of equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mower hub motor technical field especially relates to a prevent displacement or wheel hub motor mechanism of falling off. BACKGROUND

[0002] The hub motor is one of important components of the mower, can drive the walking of the mower, provides better maneuverability and more portable operation experience.

[0003] However, the hub motor on the market still has the following deficiencies or defects:

[0004] 1. The motor and the rubber sleeve cannot form a stable connection, after a period of use, the rubber sleeve will displace, even separate from the motor, affecting the normal use of the equipment.

[0005] 2. When assembling the hub motor and the end cover, the end cover is generally sleeved on the end of the motor, and then a screw hole is arranged on the side wall of the motor in a circumferential direction, so that the end cover is fixed on the side wall of the motor by a screw, but this way cannot position the end cover, the motor shaft hole on the end cover and the motor shaft, and the assembly precision is poor, which can cause wear of the parts during use, affecting the service life of the hub motor.

[0006] 3. Whether it is the accumulation of errors during assembly or the bumps and vibrations encountered during use, it is easy to cause the position or relative position of the stator and rotor to deviate, thereby affecting the normal operation and service life of the hub motor. UTILITY MODEL CONTENTS

[0007] To solve the above technical problems, one technical scheme of the utility model is:

[0008] Provided is a wheel hub motor mechanism for preventing displacement or falling off, comprising: a motor assembly and a rubber sleeve assembly,

[0009] The motor assembly comprises a motor body, a connecting slot, a mounting protrusion, a mounting hole, a mounting screw, a groove, an end cover, a positioning pull ring and an elastic member, a plurality of connecting slots are arranged on the outer side wall of the motor body, the mounting protrusion and the groove are arranged on the inner wall of the open end of the motor body, a plurality of mounting holes are arranged on the mounting protrusion and the end cover, so that the mounting screw cooperates with the mounting hole to fix the end cover and the mounting protrusion, the outer wall of the positioning pull ring is connected with the groove through the elastic member, and the inner wall thereof is in contact with the mounting screw to position the assembly of the end cover,

[0010] The rubber sleeve assembly comprises a rubber sleeve, a limiting part, a fixing hole, a connecting convex strip and an anti-skid convex part, the rubber sleeve is sleeved on the motor assembly, one end of the rubber sleeve is of an open structure, the end face of the other end is provided with the limiting part, the limiting part and the end face of the motor body are provided with the fixing hole, the fixing screw is matched with the fixing hole to connect and fix the rubber sleeve and the motor body, the outer wall of the rubber sleeve is provided with a plurality of anti-skid convex parts, the inner wall of the rubber sleeve is provided with a plurality of connecting convex strips, and the connecting convex strips are movably connected with the connecting grooves to prevent displacement or torsion of the rubber sleeve.

[0011] In a preferred embodiment of the present application, the groove is arranged on the outer side of the mounting convex part.

[0012] In a preferred embodiment of the present application, the positioning pull ring is of a ring structure, and the elastic member is a clasp spring.

[0013] In a preferred embodiment of the present application, the outer periphery of the stator in the motor body is sleeved with an anti-offset sleeve, and the outer wall of the anti-offset sleeve is in flexible contact with the rotor.

[0014] In a preferred embodiment of the present application, the outer periphery of the end cover is provided with an extension connecting part in contact / coupling / screw connection with the end part of the motor body, and a sealing structure is arranged at the connection between the end cover and the motor body.

[0015] In a preferred embodiment of the present application, the outer peripheral wall of the end cover is provided with the connecting groove corresponding to the connecting convex strip.

[0016] In a preferred embodiment of the present application, both ends of the connecting groove are of an open structure.

[0017] In a preferred embodiment of the present application, the shaft center position of the limiting part is provided with a relief through hole.

[0018] In a preferred embodiment of the present application, an included angle is arranged between the fixing hole on the limiting part and the connecting convex strip, and the included angle is 15°.

[0019] In a preferred embodiment of the present application, the rubber sleeve and the connecting convex strip are of an integral structure, the connecting convex strip is arranged axially along the rubber sleeve, and the length of the connecting convex strip is the same as the length of the rubber sleeve.

[0020] The present application has the advantages of improving the precision and stability of the connection between the rubber sleeve and the motor assembly and the end cover and the motor assembly, improving the assembly efficiency, and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a motor assembly cross-sectional structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application;

[0023] Figure 2 is a motor assembly partial structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application;

[0024] Figure 3 is a rubber assembly side view structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application;

[0025] Figure 4 is a rubber assembly three-dimensional structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application

[0026] Figure 5 is a motor assembly side view structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application;

[0027] Figure 6 is a motor assembly cross-sectional structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application;

[0028] Figure 7 is a side view structure schematic diagram of a preferable embodiment of the wheel hub motor mechanism for preventing displacement or falling off of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely as follows. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] Please refer to Figures 1-7 , the embodiments of the present application include:

[0031] A wheel hub motor mechanism for preventing displacement or falling off is used for a mower, and the structure thereof comprises a motor assembly and a rubber assembly, and the rubber assembly is arranged on the motor assembly.

[0032] The motor assembly comprises a motor body 10, a connecting groove 11, a mounting protrusion 12, a mounting hole 13, a mounting screw 14, a groove 15, an end cover 16, a positioning pull ring 17, an elastic member 18, and an anti-offset sleeve 19.

[0033] The motor body has six evenly distributed connecting grooves on the outer side wall, and the inner wall of the open end of the motor body (or motor shell) is provided with a mounting protrusion and a groove, and the groove is arranged on the outer side of the mounting protrusion. The mounting protrusion and the end cover each have four mounting holes, and the mounting screw passes through the mounting hole to connect and fix the end cover and the mounting protrusion.

[0034] The outer wall of the annular positioning pull ring is connected with the groove through the elastic member, and the inner wall of the positioning pull ring is in contact with the mounting screw to position the mounting position of the mounting screw, thereby realizing the positioning of the end cover or the end cover and the motor body. Not only reduces the assembly difficulty, improves the assembly efficiency, but also effectively improves the precision and stability of the assembly of the end cover and the motor body, prevents the motor shaft of the motor body from being worn by the end cover, and improves the service life.

[0035] Further preferably, the positioning pull ring can be an integral annular structure, or can be formed by a plurality of connected or unconnected positioning members to form an annular positioning pull ring.

[0036] At the same time, the outer periphery of the stator in the motor body is sleeved with an anti-offset sleeve, and the outer wall of the anti-offset sleeve is in flexible contact with the rotor to position the relative positions of the stator and the rotor, prevent the stator and the rotor from being offset, improve the precision and stability of the stator and the rotor, and further improve the performance and service life of the hub motor mechanism as a whole.

[0037] The motor body can adopt a conventional motor in the art as long as it can drive the mower to move. The components of the motor body and the connection relationship between the components are all prior art, which are illustrated as follows: The motor body generally comprises a motor shell (or a hub) 101, a stator 102, a rotor 103, a rotating shaft 104, a center wheel 105, a planetary gear set 106, an oil seal 107, a large gear ring 108, a Hall plate assembly, etc. The rotor shell is connected with the center wheel by screws. Magnetic steels are alternately adhered to the inner circle of the rotor shell to form a rotor. The rotor is connected and fixed with the rotor shaft in the motor shell through two 6800 bearings and positioned by a circlip. The stator core and the coil are mounted on the stator shaft in the motor shell. Bearings and oil seals are arranged at the connection between the stator shaft and the end cover and at the connection between the rotor shaft and the motor shell. The Hall plate assembly is fixed on the stator core. The power supply line is connected with the Hall plate through a shaft hole by welding. The secondary planetary gear and the primary planetary gear are fixed on the support in the motor shell by bearings and circlips to form a planetary gear set. The primary planetary gear is engaged with the center wheel. The large gear ring is mounted inside the motor shell to limit the planetary gear set. The teeth inside the large gear ring are engaged with the teeth of the secondary planetary gear to ensure that the motor rotates normally without noise. The support is mounted on the rotating shaft and fixed by a key.

[0038] Further preferably, the outer periphery of the end cover is integrally provided with an extension connecting part 161 which is in contact / coupling / screw connection / sealing connection with the end part of the motor shell in the motor body. The inner recessed step at the inner end of the extension connecting part and the inner wall of the motor shell are provided with threads, so that the end cover is first screw connected with the motor shell through the extension connecting part, and then fixed by mounting screws.

[0039] Further preferably, both ends of the connecting slot are open structures, which facilitate the flat pushing out of the connecting protrusions.

[0040] Further preferably, the elastic member is an inner circlip which can prevent the positioning pull ring from moving and form a strong whole.

[0041] The rubber assembly comprises a rubber sleeve 20, a limiting part 21, an avoiding through hole 22, a fixing hole 23, a connecting protrusion 24 and an anti-skid protrusion 25.

[0042] One end of the rubber sleeve is an open structure, which facilitates the sleeving of the rubber sleeve on the motor body. The end face of the other end of the rubber sleeve is provided with a limiting part. The limiting part and the end face of the motor body are both uniformly provided with six fixing holes, so that the fixing screws pass through the fixing holes to fix the rubber sleeve on the motor body, preventing the motor body and the rubber sleeve from moving axially (flatly) and separating. The avoiding through hole is arranged at the axial position of the limiting part, so that the motor shaft on the motor body can pass through the avoiding through hole for connection, which is convenient for use.

[0043] The outer side wall of the rubber sleeve is provided with a plurality of groups of anti-skid convex parts to facilitate the walking of the mower, and the inner wall of the rubber sleeve is uniformly provided with six connecting convex strips, which are movably connected with the connecting grooves, so that the rubber sleeve can be effectively prevented from rotating axially around the outer wall of the motor body.

[0044] Through the cooperation of the connecting convex strips and the connecting grooves and the cooperation of the fixing holes and the fixing screws, the precision, firmness and stability of the connection between the rubber sleeve and the motor body can be effectively improved.

[0045] Further preferably, the fixing holes and the connecting convex strips on the limiting part have an included angle, preferably 15°, which can further prevent the rubber sleeve from being twisted.

[0046] Further preferably, the rubber sleeve and the connecting convex strips are made of PP material, and the anti-skid convex parts are made of TPE material.

[0047] Further preferably, the connecting convex strips are arranged axially along the rubber sleeve, and the length of the connecting convex strips is the same as the length of the rubber sleeve.

[0048] Further preferably, the outer peripheral wall of the end cover is provided with a connecting groove corresponding to the connecting convex strip.

[0049] In the assembly, the internal components of the motor body are assembled first, wherein the anti-offset sleeve is installed on the stator after the assembly of the stator; the bearing connected with the motor shaft and the oil seal are installed on the end cover, and the positioning ring and the snap spring are installed in the motor body; the end cover is connected to the motor body, and the end cover is fixed to the positioning ring in the motor body by the mounting screw to form a motor assembly; the motor assembly is pushed into the rubber sleeve, and the connecting convex strip is inserted into the connecting groove; when the rubber sleeve is completely sleeved on the motor assembly, the rubber sleeve and the motor assembly are locked by the fixing screw; and the assembled hub motor mechanism is sleeved on the hub outside and fixed by the screw.

[0050] The beneficial effects of the hub motor mechanism for preventing displacement or falling off are:

[0051] 1. Through the improvement of the rubber sleeve and the connection mode of the rubber sleeve and the motor assembly, the displacement, twisting and even disconnection of the rubber sleeve during use can be effectively avoided, and the precision, efficiency and stability of the connection between the rubber sleeve and the motor assembly are improved.

[0052] 2. Through the improvement of the positioning and connection mode of the end cover and the motor body, the efficiency of assembly can be improved, and the precision and stability of the connection between the end cover and the motor assembly can be effectively improved, so that the normal operation of the motor is ensured, and the service life of the equipment is prolonged.

[0053] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A wheel hub motor mechanism that prevents displacement or detachment, characterized by, The utility model relates to a motor assembly and rubber assembly, The motor assembly includes motor body, connecting clamping groove, mounting convex part, mounting hole, mounting screw, recess, end cover, positioning pull ring, elastic piece, a plurality of connecting clamping grooves are arranged on the outer side wall of the motor body, the motor body has the recess and the mounting convex part arranged on the inner wall of the open one end, a plurality of mounting holes are arranged on the mounting convex part and the end cover, so that the mounting screw cooperates with the mounting hole to fix the end cover and the mounting convex part, the outer wall of the positioning pull ring is connected with the recess through the elastic piece, and the inner wall thereof is in contact with the mounting screw to assemble and position the end cover, The rubber assembly includes rubber sleeve, limiting part, fixing hole, connecting convex strip and anti-skid convex part, the rubber sleeve is sleeved on the motor assembly, one end of the rubber sleeve is open structure, the other end is provided with the limiting part on the end face, the limiting part and the end face of the motor body are provided with the fixing hole, so that the fixing screw cooperates with the fixing hole to connect and fix the rubber sleeve and the motor body, a plurality of anti-skid convex parts are arranged on the outer wall of the rubber sleeve, a plurality of connecting convex strips are arranged on the inner wall of the rubber sleeve, and the connecting convex strips are movably connected with the connecting clamping grooves to prevent displacement or torsion of the rubber sleeve. The recess is arranged on the outer side of the mounting convex part.

2. The wheel hub motor mechanism according to claim 1, wherein The positioning pull ring is in annular structure, and the elastic piece is in clasp spring.

3. The wheel hub motor mechanism according to claim 1, wherein An anti-offset sleeve is sleeved on the outer periphery of the stator in the motor body, and the outer wall of the anti-offset sleeve is in flexible contact with the rotor.

4. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, characterized in that, The outer periphery of the end cover is provided with an extension connecting part in contact / clamped / screwed connection with the end of the motor body, wherein a sealing structure is arranged at the connecting position of the end cover and the motor body.

5. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, characterized in that, The connecting clamping groove is arranged on the outer peripheral wall of the end cover and corresponds to the connecting convex strip.

6. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, wherein Both ends of the connecting clamping groove are in open structure.

7. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, characterized in that, An avoiding through hole is arranged on the axial position of the limiting part.

8. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, characterized in that, An included angle is arranged between the fixing hole on the limiting part and the connecting convex strip, and the included angle is 15 degrees.

9. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, wherein, The rubber sleeve and the connecting convex strip are in integral structure, the connecting convex strip is arranged in axial direction along the rubber sleeve, and the length of the connecting convex strip is same with the length of the rubber sleeve.

10. The wheel hub motor mechanism to prevent displacement or falling off according to claim 1, characterized in that, ​

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