Motor rotor for tire inflation pump

Abstract

The utility model discloses a motor rotor for a tire inflation pump, which belongs to the technical field of motor rotors, and is characterized in that the surface of a rotor rotating shaft is fixedly provided with a retaining mechanism, the surface of the retaining mechanism is fixedly provided with a rotor core, the rotor core comprises a chip, and the surface of the rotor rotating shaft is fixedly sleeved with a supporting mechanism; one end of the supporting mechanism is movably connected with the surface of the rotor iron core, the supporting mechanism comprises a supporting sleeve and a supporting plate, and a hole is formed in the bottom of the supporting sleeve. According to the motor rotor assembling device, the assembling efficiency of the rotor iron core is effectively improved, the assembled rotor iron core can be rapidly positioned through the arranged supporting springs, supporting plates and extrusion plates, the production efficiency of a motor rotor is greatly improved, and then the production cost of the motor rotor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor rotor technical field more specifically, relate to a kind of motor rotor for tire inflator. BACKGROUND

[0002] Electronic rotor usually refers to the part of rotation in motor, divided into motor rotor and generator rotor, motor rotor is composed of rotor core, permanent magnet, rotating shaft and bearing etc., is the key component for realizing the conversion of electrical energy and mechanical energy and mechanical energy in motor.

[0003] At present, the motor rotor of commonly used tire inflator needs to use retainer to support and fix rotor core during production process, but the number of core pieces that constitute rotor core is large, and it is not easy to position during assembly, thereby reducing assembly efficiency and increasing production cost, such as the motor rotor disclosed in publication No.CN110535265B, including rotating shaft and at least one rotating body sleeved on the rotating shaft, the rotating body includes a rotor core and a plurality of permanent magnets, the outer periphery of the rotor core is spaced apart along its circumferential direction and is provided with a plurality of axially extending notches, the rotating body further includes a plurality of axial retaining arms, the axial retaining arms are respectively partially injection molded in the corresponding notches, and the adjacent axial retaining arms form a magnet accommodating portion, and the permanent magnets are respectively press-fitted in the corresponding magnet accommodating portion.

[0004] From the above-mentioned disclosure, it can be known that the rotor core cannot be installed and fixed with the retaining arm assembly before assembly, and then the core pieces are pre-positioned during assembly, so that the core pieces are not easy to position during assembly, thereby reducing the assembly efficiency of the rotor core and the production efficiency of the motor rotor, and increasing the production cost. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a motor rotor for tire inflator, which can quickly pre-position the installation position of the core piece by setting the polygonal retaining sleeve and the polygonal mounting hole of the core piece, effectively improve the assembly efficiency of the rotor core, and quickly position the rotor core after assembly by setting the supporting spring, supporting plate and extrusion plate, greatly improve the production efficiency of the motor rotor, and thereby reduce the production cost.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] The utility model provides a motor rotor for tire inflator pump, including rotor axis, the surface fixed mounting of rotor axis has the retaining mechanism, the surface fixed mounting of retaining mechanism has rotor core, and rotor core includes the chip, the surface fixed sleeve of rotor axis has the support mechanism, one end of support mechanism is movably connected with the surface of rotor core, and support mechanism includes support sleeve and support plate, the bottom of support sleeve is opened the hole, and the inner wall of hole is fixedly sleeved with the surface of rotor axis, the motor rotor for tire inflator pump, through the setting of polygonal retaining sleeve and the setting of polygonal mounting hole of chip, can quickly position the installation position of chip, effectively improve the assembly efficiency of rotor core, and through the setting of support spring, support plate and extrusion plate, can quickly position the rotor core of complete assembly, greatly improve the production efficiency of motor rotor, and then reduce its production cost.

[0008] Further, the retaining mechanism includes a retaining sleeve, the cross-sectional shape of the retaining sleeve is polygonal, the retaining sleeve is fixedly sleeved on the surface of the rotor shaft, and the surface of the rotor shaft is threadedly connected with an extrusion plate. The polygonal retaining sleeve can prevent the rotor core from rotating after installation, thereby improving the installation stability of the rotor core.

[0009] Further, the chip is provided with a plurality of annular equidistant fixing grooves on the side edges, and an installation hole is formed at the center position of the chip. The inner wall of the installation hole is slidably connected with the surface of the retaining sleeve. When the polygonal installation hole is sleeved on the surface of the retaining sleeve, the installation position of the chip can be automatically positioned.

[0010] Further, one end of the support sleeve is provided with a support groove, the inner wall of the support groove is movably connected with a support spring, and the inner wall of the support spring is slidably connected with the surface of the rotor shaft. The support groove is used to accommodate the support spring, so that the support spring is prevented from being damaged due to excessive extrusion of the support plate.

[0011] Further, one end of the support spring is movably connected with the surface of the support plate, and the surface of the support plate is movably connected with the surface of the rotor core. A rubber sleeve is fixedly sleeved at the center position of the support plate. The support plate can extrude the stacked chips by the elastic force of the support spring, so that the stacked chips are pressed against each other.

[0012] Further, the cross-sectional shape of the extrusion plate is the same as that of the retaining sleeve, and a threaded hole is formed at the center position of the extrusion plate. The extrusion plate is used to limit the position of one end of the rotor core.

[0013] Further, a sleeve hole is formed at the center position of the rubber sleeve, and the inner wall of the sleeve hole is slidably connected with the surface of the rotor shaft. The rubber sleeve has a damping effect, so that the support plate is prevented from sliding randomly on the surface of the rotor shaft.

[0014] Compared with the prior art, the utility model has the advantages of

[0015] The polygon retaining sleeve and the polygon mounting hole of the chip are arranged, the mounting position of the chip can be quickly prepositioned, and the assembly efficiency of the rotor core is effectively improved.

[0016] The supporting spring, the supporting plate and the extrusion plate are arranged, the rotor core after assembly can be quickly positioned, the production efficiency of the motor rotor is greatly improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the retaining mechanism and the rotor shaft mounting structure schematic view of the utility model;

[0019] Figure 3 It is the chip structure schematic view of the utility model;

[0020] Figure 4 It is the supporting mechanism and the rotor shaft structure schematic view of the utility model;

[0021] Figure 5 It is the extrusion plate structure sectional view of Figure 4

[0022] Mark explanation in drawing:

[0023] 1, rotor shaft; 2, rotor core; 21, chip; 22, mounting hole; 23, fixed groove; 3, retaining mechanism; 31, retaining sleeve; 32, extrusion plate; 4, supporting mechanism; 41, supporting sleeve; 42, supporting groove; 43, supporting spring; 44, supporting plate; 45, rubber sleeve; 46, sleeve hole. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment 1

[0025] Please refer to Figures 1-5 ​A motor rotor for a tire inflator pump, comprising a rotor shaft 1, the rotor shaft 1 belongs to the prior art, the center of the rubber sleeve 45 is provided with a sleeve hole 46, the inner wall of the sleeve hole 46 is in sliding connection with the surface of the rotor shaft 1, the rubber sleeve 45 has a damping effect, which can prevent the support plate 44 from sliding randomly on the surface of the rotor shaft 1, the surface of the rotor shaft 1 is fixedly provided with a retaining mechanism 3, the surface of the retaining mechanism 3 is fixedly provided with a rotor core 2, the surface of the rotor core 2 is wound with copper wire, the winding mode belongs to the prior art, the outer side of the rotor core 2 is provided with a permanent magnet fixing frame and a permanent magnet, the composition and working principle belong to the prior art, the rotor core 2 comprises a chip 21, one end of the chip 21 is limited by an extrusion plate 32, when the extrusion plate 32 rotates and the mounting hole 22 of the chip 21 is not coaxial, the chip 21 cannot pass through the extrusion plate 32, thereby fixing the position of the chip 21 at one end of the rotor core 2, so that the chip 21 has the function of disassembly and combination, the cross-sectional shape of the extrusion plate 32 is the same as that of the retaining sleeve 31, a threaded hole is formed in the center of the extrusion plate 32, the extrusion plate 32 is used to limit the position of one end of the rotor core 2, the surface of the rotor shaft 1 is fixedly sleeved with a supporting mechanism 4, one end of the supporting mechanism 4 is movably connected with the surface of the rotor core 2, the supporting mechanism 4 comprises a supporting sleeve 41 and a supporting plate 44, a hole is formed in the bottom of the supporting sleeve 41, and the inner wall of the hole is fixedly sleeved with the surface of the rotor shaft 1.

[0026] The retaining mechanism 3 comprises a retaining sleeve 31, the cross-sectional shape of the retaining sleeve 31 is polygonal, the retaining sleeve 31 is fixedly sleeved on the surface of the rotor shaft 1, the surface of the rotor shaft 1 is threadedly connected with the extrusion plate 32, the polygonal retaining sleeve 31 can prevent the rotor core 2 from rotating after installation, thereby improving the installation stability of the rotor core 2, the side edge of the chip 21 is provided with a ring-shaped equidistantly distributed fixing groove 23, the fixing groove 23 is used to mount the permanent magnet fixing frame, a mounting hole 22 is formed in the center of the chip 21, the inner wall of the mounting hole 22 is in sliding connection with the surface of the retaining sleeve 31, and the polygonal mounting hole 22 can be automatically positioned when it is sleeved on the surface of the retaining sleeve 31.

[0027] One end of the supporting sleeve 41 is provided with a supporting groove 42, the inner wall of the supporting groove 42 movably connects with a supporting spring 43, the inner wall of the supporting spring 43 is in sliding connection with the surface of the rotor shaft 1, the supporting groove 42 is used to accommodate the supporting spring 43, so as to avoid damage of the supporting spring 43 caused by excessive extrusion of the supporting plate 44, one end of the supporting spring 43 is movably connected with the surface of the supporting plate 44, the surface of the supporting plate 44 is movably connected with the surface of the rotor core 2, a rubber sleeve 45 is fixedly sleeved with the center of the supporting plate 44, the supporting plate 44 can extrude the stacked chips 21 through the elastic force, so that the stacked chips 21 are pressed tightly

[0028] The motor rotor for the tire inflator pump is assembled by first fixing the retaining sleeve 31 on the surface of the rotor shaft 1, then fixing the supporting sleeve 41 on the surface of the rotor shaft 1, then installing the extrusion plate 32 on one end of the retaining sleeve 31 through screwing, while making the rhombus of the extrusion plate 32 and the retaining sleeve 31 in the same straight line, then sleeving the rotor core 2 on the surface of the retaining sleeve 31 from top to bottom, then stacking the core pieces 21 to form the rotor core 2, at this time, the lower end of the stacked rotor core 2 extrudes the supporting plate 44 downward, so that the supporting plate 44 moves downward to extrude the supporting spring 43, when the supporting plate 44 stops moving after contacting the end surface of the supporting sleeve 41 downward, at this time, the extrusion plate 32 is rotated clockwise through the wrench, so that the extrusion plate 32 extrudes the rotor core 2 downward, and then the core pieces 21 of the rotor core 2 are pressed tightly, at the same time, the rotated extrusion plate 32 is dislocated with the installation hole 22, so that the core pieces 21 cannot move upward, and then the assembly of the rotor core 2 is completed, through the polygonal retaining sleeve 31 and the polygonal installation hole 22 of the core pieces 21, the installation position of the core pieces 21 can be quickly pre-positioned, the assembly efficiency of the rotor core 2 is effectively improved, and through the supporting spring 43, the supporting plate 44 and the extrusion plate 32, the completed rotor core 2 can be quickly positioned, the production efficiency of the motor rotor is greatly improved, and then the production cost is reduced.

[0029] The above merely describes a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A motor rotor for a tire inflator pump comprising a rotor shaft (1), characterized in that: The surface of the rotor shaft (1) is fixedly installed with a retaining mechanism (3), the surface of the retaining mechanism (3) is fixedly installed with a rotor core (2), the rotor core (2) comprises a core piece (21), the surface of the rotor shaft (1) is fixedly sleeved with a supporting mechanism (4), one end of the supporting mechanism (4) is movably connected with the surface of the rotor core (2), the supporting mechanism (4) comprises a supporting sleeve (41) and a supporting plate (44), the bottom of the supporting sleeve (41) is provided with a hole, and the inner wall of the hole is fixedly sleeved with the surface of the rotor shaft (1).

2. A motor rotor for a tire inflator pump as defined in claim 1, wherein: The retaining mechanism (3) comprises a retaining sleeve (31), the cross section of the retaining sleeve (31) is polygonal, the retaining sleeve (31) is fixedly sleeved with the surface of the rotor shaft (1), and the surface of the rotor shaft (1) is threadedly connected with an extrusion plate (32).

3. A motor rotor for a tire inflator pump as defined in claim 2, wherein: The side of the core piece (21) is provided with annular equidistantly distributed fixing grooves (23), the center of the core piece (21) is provided with a mounting hole (22), and the inner wall of the mounting hole (22) is slidably connected with the surface of the retaining sleeve (31).

4. A motor rotor for a tire inflator pump as defined in claim 1, wherein: One end of the supporting sleeve (41) is provided with a supporting groove (42), the inner wall of the supporting groove (42) is movably connected with a supporting spring (43), and the inner wall of the supporting spring (43) is slidably connected with the surface of the rotor shaft (1).

5. A motor rotor for a tire inflator pump as defined in claim 4, wherein: One end of the supporting spring (43) is movably connected with the surface of the supporting plate (44), the surface of the supporting plate (44) is movably connected with the surface of the rotor core (2), and the center of the supporting plate (44) is fixedly sleeved with a rubber sleeve (45).

6. A motor rotor for a tire inflator pump as defined in claim 2, wherein: The cross section of the extrusion plate (32) is the same as that of the retaining sleeve (31), and the center of the extrusion plate (32) is provided with a threaded hole.

7. A motor rotor for a tire inflator pump as defined in claim 5, wherein: The center of the rubber sleeve (45) is provided with a sleeve hole (46), and the inner wall of the sleeve hole (46) is slidably connected with the surface of the rotor shaft (1).

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