Novel motor

Abstract

The utility model relates to the technical field of motor structures, and particularly discloses a novel motor. Comprising a stator core; the upper end of the stator core is fixedly provided with a carbon brush support, and the upper end of the carbon brush support is provided with fan blades. The lower end of the stator core is fixedly provided with a quadrupole support. The stator core is also provided with a coil holder; the stator core comprises a middle inner cavity, and a rotor assembly is arranged in the inner cavity; the carbon brush support comprises a circular center boss, and a boss through hole is formed in the middle of the center boss. Four main frames, namely a first main frame, a second main frame, a third main frame and a fourth main frame, transversely extend outwards from the lower end of the outer wall of the central boss; the four main frames are uniformly distributed; the motor has the advantages of being simple in structure, not prone to shaking, easy to install and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of motor structures, in particular to a new type of motor. Background Art

[0002] The motor is a very commonly used industrial product, mainly including a stator core, a rotor assembly, a carbon brush assembly, a carbon brush holder, a bracket, etc.; among them, the carbon brush assembly is installed on the carbon brush holder. Many current motors have components that are prone to shaking due to structural design problems, especially the carbon brush assemblies, which are large in number and prone to shaking, causing unnecessary trouble; and the motor will generate heat during operation; if used for a long time, the motor must be cooled; therefore, fan blades are usually installed on the motor, and when the fan blades rotate, air flow will be generated to cool the electrodes; however, the heat dissipation effect of many current motors is poor and there are defects, which are in urgent need of improvement. Utility Model Content

[0003] The utility model aims to provide a motor using a novel carbon brush bracket, which has the advantages of simple structure, not easy to shake, easy to install and the like.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of motor, including a stator core; a carbon brush bracket is fixedly installed on the upper end of the stator core, and a fan blade is installed on the upper end of the carbon brush bracket; a four-pole bracket is fixedly installed on the lower end of the stator core;

[0005] The stator core is also provided with a bobbin; the stator core includes an inner cavity in the middle, and a rotor assembly is provided in the inner cavity;

[0006] The carbon brush bracket comprises a circular central boss, wherein a boss through hole is provided in the middle of the central boss; four main frames are extended outwardly from the lower end of the outer wall of the central boss, namely, a first main frame, a second main frame, a third main frame and a fourth main frame; the four main frames are evenly distributed;

[0007] Each main frame is provided with a strip-shaped through-hole slot, which are respectively a first strip-shaped through-hole slot, a second strip-shaped through-hole slot, a third strip-shaped through-hole slot and a fourth strip-shaped through-hole slot; each strip-shaped through-hole slot divides the corresponding main frame into two brackets;

[0008] The first strip-shaped through-hole groove divides the first main frame into a first bracket and a first second bracket; the first bracket is provided with a first semicircular positioning groove, and the first second bracket is provided with a first second semicircular positioning groove; the first semicircular positioning groove and the first second semicircular positioning groove are arranged oppositely; the first semicircular positioning groove and the first second semicircular positioning groove jointly form a carbon brush mounting portion with a rectangular middle portion and two semicircular ends;

[0009] The second main frame, the third main frame and the fourth main frame all have the same structure as the first main frame; a carbon brush assembly is installed on the carbon brush installation portion.

[0010] Furthermore, the motor is further provided with a wind shield, which covers the upper end of the stator core; the wind shield is provided with a wind shield table, and a mounting ring plate is provided extending downward from the edge of the wind shield table; a wind shield plate is provided on the wind shield table, which extends upward, and the wind shield plate is an annular structure, and the annular wind shield plate is provided with a notch;

[0011] An annular mounting boss is provided on the wind shield surface upward; a central through hole is provided in the middle of the annular mounting boss, and the central through hole is used to insert the fan blade; the two sides of the notch are respectively a first notch end and a second notch end;

[0012] Taking the center point of the annular mounting boss as the circle point, extending along the radial direction to connect to the outer side of the annular mounting boss, a first connection point is provided, and continuing to extend to the inner wall of the mounting ring plate, a second connection point is provided; the width distance between the first connection point and the second connection point is the lateral distance D;

[0013] From the first notch end to the second notch end in a clockwise direction, the lateral distance D gradually changes from small to large.

[0014] Furthermore, a heat dissipation duct is formed between the inner wall of the wind shield and the outer wall of the annular mounting boss; and the width of the heat dissipation duct gradually changes from small to large from the first notch end to the second notch end in a clockwise direction.

[0015] Furthermore, an air outlet guide plate is extended outward from one end of the notch; a wind shield guide portion is included at the rear of the wind shield, i.e., one side of the second notch end; and an air outlet is formed between the air outlet guide plate and the wind shield guide portion.

[0016] Furthermore, the number of the carbon brush assemblies is four, including a first carbon brush box, a second carbon brush box, a third carbon brush box and a fourth carbon brush box; the four carbon brush boxes are the same in size and shape; and a fan blade is further provided above the wind shield;

[0017] The first carbon brush box comprises a long strip-shaped box body, the box body is provided with a box body through hole, and a carbon brush sleeve is arranged in the box body through hole; two semicircular bosses are respectively arranged on the outer walls of both sides of the box body, and screw holes are arranged on the bosses; the two bosses of the first carbon brush box are respectively placed in the first semicircular positioning groove and the first second semicircular positioning groove;

[0018] The bottom ends of the first semicircular positioning groove and the first second semicircular positioning groove are both provided with carbon brush positioning holes; the screw holes on the boss correspond to the carbon brush positioning holes.

[0019] Furthermore, the tail end of the first bracket and the tail end of the first second bracket are connected through a transverse plate; a positioning protrusion is also provided on the bottom side of the transverse plate; the stator core includes an upper end face, a plurality of carbon brush mounting holes are provided on the upper end face, and the positioning protrusion is fixedly inserted in the carbon brush mounting hole.

[0020] Furthermore, a plurality of mounting ribs are provided on the inner edge of the central through hole; a mounting hole is provided on the mounting rib; an external connecting part passes through the mounting hole, and then passes through the screw hole on the boss and is inserted into the carbon brush positioning hole; so that the wind cover is fixedly mounted on the carbon brush bracket.

[0021] Furthermore, the rotor assembly includes a rotor core, a circular rotor through hole is provided in the middle of the rotor core; a commutator is installed at the upper end of the rotor core; a commutator through hole is provided in the middle of the commutator;

[0022] Furthermore, a bracket through hole is provided in the middle of the quadrupole bracket; the wind cover is provided with an end cover through hole, and the bottom end of the fan blade is provided with a fan blade positioning hole; the motor is also provided with a rotating shaft; the rotating shaft passes through the bracket through hole, the rotor through hole, the commutator through hole, and the boss through hole in sequence, and is inserted into the fan blade positioning hole to be fixedly connected to the fan blade.

[0023] Furthermore, the transverse plate is provided with a first mounting hole; the quadrupole bracket is provided with a bracket mounting hole; the stator core is provided with a stator through hole; the external connecting part passes through the bracket mounting hole, then passes through the stator through hole, and is fixedly installed in the first mounting hole.

[0024] The motor of the utility model mainly has the following beneficial effects:

[0025] 1. A carbon brush bracket, comprising a circular central boss, from the lower end of the outer wall of the central boss, four main frames are extended outward laterally, namely the first main frame, the second main frame, the third main frame and the fourth main frame; the four main frames are evenly distributed; each main frame is provided with a strip through-hole groove, each strip through-hole groove divides the corresponding main frame into two brackets; each bracket is provided with a semicircular positioning groove, so that in each main frame, two semicircular positioning grooves arranged opposite to each other jointly form a carbon brush installation part with a rectangular middle part and two semicircular ends, which can be used in conjunction with a carbon brush box with a semicircular boss, so that after the carbon brush box is installed, it is stable and does not shake, and has a good practical effect

[0026] 2. A wind shield is provided on the top of the wind hood, which is an annular structure and has a notch. A heat dissipation duct is formed between the inner wall of the wind shield and the outer wall of the annular mounting boss. The width of the heat dissipation duct changes gradually from small to large from the first notch end to the second notch end in a clockwise direction. Therefore, the airflow can enter from a small opening and exit from a large opening, and the airflow dispersion area gradually increases until it is dispersed outward at the largest air outlet, achieving a good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Figure 1 It is a structural schematic diagram of the novel motor of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the new motor of the utility model plus a wind cover;

[0030] Figure 3 It is a schematic diagram of the explosion structure of the new motor of the utility model;

[0031] Figure 4 It is a schematic diagram of a partial explosion structure of the novel motor of the utility model;

[0032] Figure 5 It is a structural schematic diagram of the carbon brush bracket separation of the utility model;

[0033] Figure 6 It is a structural schematic diagram of the new motor of the utility model without the carbon brush bracket;

[0034] Figure 7 It is a structural schematic diagram of the carbon brush bracket and the carbon brush box of the utility model;

[0035] Figure 8 It is a structural schematic diagram of the carbon brush bracket of the utility model;

[0036] Fig. 9 It is a schematic diagram of the bottom structure of the carbon brush bracket of the utility model;

[0037] Fig.10 It is a structural schematic diagram of the wind hood of the utility model;

[0038] Fig.11 It is a structural schematic diagram of the wind cover, the motor stator core and the rotor assembly of the utility model;

[0039] Fig.12 It is a structural schematic diagram of the wind shield of the utility model from another perspective;

[0040] Fig.13It is a structural schematic diagram of the wind shield of the utility model from another viewing angle;

[0041] Fig.14 It is a structural schematic diagram of the wind flow direction in the wind hood of the utility model. DETAILED DESCRIPTION

[0042] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] like Figures 1 to 14 , which is a schematic diagram of the structure of the new motor of the utility model; the new motor of the utility model comprises a stator core 1; a carbon brush holder 4 is fixedly mounted on the upper end of the stator core 1, and a fan blade 3 is mounted on the upper end of the carbon brush holder 4; a quadrupole holder 5 is fixedly mounted on the lower end of the stator core 1;

[0045] The stator core 1 is also provided with a bobbin 6; the stator core 1 includes an inner cavity in the middle, and a rotor assembly 7 is provided in the inner cavity;

[0046] The carbon brush bracket 4 includes a circular central boss 41, and a boss through hole 4101 is provided in the middle of the central boss 41; four main frames extend outward laterally from the lower end of the outer wall of the central boss 41, namely a first main frame 411, a second main frame 412, a third main frame 413 and a fourth main frame 414; the four main frames are evenly distributed;

[0047] Each main frame is provided with a strip-shaped through hole slot, which are a first strip-shaped through hole slot 421, a second strip-shaped through hole slot 422, a third strip-shaped through hole slot 423 and a fourth strip-shaped through hole slot 424; each strip-shaped through hole slot divides the corresponding main frame into two brackets;

[0048] The first strip-shaped through-hole groove 421 divides the first main frame into a first bracket 4111 and a first second bracket 4112; the first bracket 4111 is provided with a first semicircular positioning groove 4021, and the first second bracket 4112 is provided with a first second semicircular positioning groove 4022; the first semicircular positioning groove 4021 and the first second semicircular positioning groove 4022 are arranged opposite to each other; the first semicircular positioning groove 4021 and the first second semicircular positioning groove 4022 jointly form a carbon brush mounting portion with a rectangular middle portion and two semicircular ends;

[0049] The second main frame 412 , the third main frame 413 and the fourth main frame 414 have the same structure as the first main frame 411 ; a carbon brush assembly 8 is installed on the carbon brush installation portion.

[0050] As a preferred embodiment, the motor of the utility model is further provided with a wind shield 2, and the wind shield 2 covers the upper end of the stator core 1; the wind shield 2 is provided with a wind shield table 21, and a mounting ring plate 22 is provided downwardly extending from the edge of the wind shield table 21; on the wind shield table 21, a wind shield 23 is provided upwardly extending, and the wind shield 23 is an annular structure, and the annular wind shield 23 is provided with a notch 231;

[0051] The fan cover table 21 is provided with an annular mounting boss 24 upward; a central through hole 211 is provided in the middle of the annular mounting boss 24, and the central through hole 211 is used to insert the fan blade 3; the two sides of the notch 231 are respectively a first notch end (A) and a second notch end (B);

[0052] Taking the center point of the annular mounting boss 24 as the circle point, a first connection point D1 is provided along the radial direction to connect to the outer side of the annular mounting boss 24, and a second connection point D2 is provided to continue to extend to the inner wall of the mounting ring plate 22; the width distance between the first connection point D1 and the second connection point D2 is the lateral distance D;

[0053] From the first notch end A to the second notch end B in a clockwise direction, the lateral distance D gradually changes from small to large.

[0054] Preferably, a heat dissipation duct 25 is formed between the inner wall of the windshield plate 23 and the outer wall of the annular mounting boss 24; from the first notch end A to the second notch end B in a clockwise direction; the width of the heat dissipation duct 25 gradually changes from small to large.

[0055] An air outlet guide plate 261 is extended outward from one end of the notch 231 ; a wind shield guide portion 262 is included at the rear of the wind shield 23 , i.e., on one side of the second notch end (B); an air outlet is formed between the air outlet guide plate 261 and the wind shield guide portion 262 .

[0056] In the utility model, after the motor is started, the fan blades will rotate, and the rotating fan blades will generate airflow, which enters the air duct from the first notch end A and is dispersed from the air outlet at the second notch end B; therefore, the airflow enters the air duct, enters from the small opening at the first notch end A, and exits from the large opening at the second notch end B, and the airflow dispersion area gradually increases, and is dispersed outwards at the largest air outlet, thereby achieving a good heat dissipation effect.

[0057] In the present invention, the number of the carbon brush assemblies 8 is four, including a first carbon brush box 81, a second carbon brush box, a third carbon brush box and a fourth carbon brush box; the four carbon brush boxes are of the same size and shape; a fan blade 3 is also provided above the wind cover 2;

[0058] The first carbon brush box 81 comprises a long strip box body 811, the box body 811 is provided with a box body through hole 812, and a carbon brush sleeve 813 is provided in the box body through hole 812; two outer walls on both sides of the box body 811 are respectively provided with two semicircular bosses 814, and screw holes 815 are provided on the bosses 814; the two bosses 814 of the first carbon brush box 81 are respectively placed in the first semicircular positioning groove 4021 and the first second semicircular positioning groove 4022;

[0059] The bottom ends of the first semicircular positioning groove 4021 and the first second semicircular positioning groove 4022 are both provided with carbon brush positioning holes 4023 ; the screw holes 815 on the boss 814 correspond to the carbon brush positioning holes 4023 .

[0060] The tail end of the first bracket 4111 and the tail end of the first second bracket 4112 are connected by a transverse plate 43; a positioning protrusion 432 is also provided on the bottom side of the transverse plate 43; the stator core 1 includes an upper end surface 11, and a plurality of carbon brush mounting holes 111 are provided on the upper end surface, and the positioning protrusion 432 is fixedly inserted in the carbon brush mounting hole 111.

[0061] A plurality of mounting ribs 213 are provided on the inner edge of the central through hole 211; a mounting hole 214 is provided on the mounting rib 213; the external connecting part passes through the mounting hole 214, and then passes through the screw hole 815 on the boss 814, and is inserted into the carbon brush positioning hole 4023; so that the wind cover 2 is fixedly mounted on the carbon brush bracket 4.

[0062] In the present invention, the rotor assembly 7 comprises a rotor core 71, a circular rotor through hole is provided in the middle of the rotor core 71; a commutator 72 is installed at the upper end of the rotor core 71; a commutator through hole is provided in the middle of the commutator 72;

[0063] A bracket through hole 51 is provided in the middle of the quadrupole bracket 5; the wind cover 2 is provided with an end cover through hole, and a blade positioning hole 31 is provided at the bottom end of the fan blade 3; the motor is also provided with a rotating shaft 9; the rotating shaft 9 passes through the bracket through hole 51, the rotor through hole, the commutator through hole, and the boss through hole in sequence, and is inserted into the blade positioning hole 31 to be fixedly connected to the fan blade 3.

[0064] The transverse plate 43 is provided with a first mounting hole 431 ; the quadrupole bracket is provided with a bracket mounting hole 52 ; the stator core 1 is provided with a stator through hole 112 ; the external connecting piece passes through the bracket mounting hole 52 , then passes through the stator through hole, and is fixedly installed in the first mounting hole 431 .

[0065] Therefore, the carbon brush bracket of the utility model is integrally formed, which saves mold opening cost, and the entire bracket includes a structure with multiple hollow holes to facilitate heat dissipation.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel motor, comprising a stator core (1); characterized in that: A carbon brush holder (4) is fixedly mounted on the upper end of the stator core (1), and a fan blade (3) is mounted on the upper end of the carbon brush holder (4); a quadrupole holder (5) is fixedly mounted on the lower end of the stator core (1); The stator core (1) is also provided with a bobbin (6); the stator core (1) comprises an inner cavity in the middle, and a rotor assembly (7) is provided in the inner cavity; The carbon brush bracket (4) comprises a circular central boss (41), wherein a boss through hole (4101) is provided in the middle of the central boss (41); four main frames are extended outwardly from the lower end of the outer wall of the central boss (41) in a transverse direction, namely a first main frame (411), a second main frame (412), a third main frame (413) and a fourth main frame (414); the four main frames are evenly distributed; Each main frame is provided with a strip-shaped through hole slot, which are respectively a first strip-shaped through hole slot (421), a second strip-shaped through hole slot (422), a third strip-shaped through hole slot (423) and a fourth strip-shaped through hole slot (424); each strip-shaped through hole slot divides the corresponding main frame into two brackets; The first strip-shaped through-hole groove (421) divides the first main frame into a first bracket (4111) and a first second bracket (4112); the first bracket (4111) is provided with a first semicircular positioning groove (4021), and the first second bracket (4112) is provided with a first second semicircular positioning groove (4022); the first semicircular positioning groove (4021) and the first second semicircular positioning groove (4022) are arranged opposite to each other; the first semicircular positioning groove (4021) and the first second semicircular positioning groove (4022) jointly form a carbon brush mounting portion with a rectangular middle portion and two semicircular ends; The second main frame (412), the third main frame (413) and the fourth main frame (414) all have the same structure as the first main frame (411); and a carbon brush assembly (8) is installed on the carbon brush installation portion.

2. The novel motor according to claim 1 is characterized in that: The motor is further provided with a wind shield (2), the wind shield (2) covering the upper end of the stator core (1); the wind shield (2) is provided with a wind shield table (21), and a mounting ring plate (22) is provided extending downward from the edge of the wind shield table (21); a wind shield plate (23) is provided on the wind shield table (21) extending upward, the wind shield plate (23) is an annular structure, and the annular wind shield plate (23) is provided with a notch (231); The fan cover table (21) is provided with an annular mounting boss (24) upward; a central through hole (211) is provided in the middle of the annular mounting boss (24), and the central through hole (211) is used to insert the fan blade (3); the two sides of the notch (231) are respectively a first notch end (A) and a second notch end (B); Taking the center point of the annular mounting boss (24) as a circle point, extending along the radial direction to connect to the outer side of the annular mounting boss (24), a first connection point (D1) is provided, and continuing to extend to the inner wall of the mounting ring plate (22), a second connection point (D2) is provided; the width distance between the first connection point (D1) and the second connection point (D2) is a transverse distance D; From the first notch end (A) to the second notch end (B) in a clockwise direction, the lateral distance D gradually changes from small to large.

3. The novel motor according to claim 2 is characterized in that: A heat dissipation duct (25) is formed between the inner wall of the wind shield (23) and the outer wall of the annular mounting boss (24); the width of the heat dissipation duct (25) gradually changes from small to large from the first notch end (A) to the second notch end (B) in a clockwise direction.

4. The novel motor according to claim 3 is characterized in that: An air outlet guide plate (261) is provided at one end of the notch (231) extending outward; a wind shield guide portion (262) is included at the rear of the wind shield (23), i.e., on one side of the second notch end (B); and an air outlet is formed between the air outlet guide plate (261) and the wind shield guide portion (262).

5. The novel motor according to claim 2 is characterized in that: The number of the carbon brush assemblies (8) is four, including a first carbon brush box (81), a second carbon brush box, a third carbon brush box and a fourth carbon brush box; the four carbon brush boxes are of the same size and shape; a fan blade (3) is also provided above the wind cover (2); The first carbon brush box (81) comprises a long strip-shaped box body (811), the box body (811) is provided with a box body through hole (812), and a carbon brush sleeve (813) is arranged in the box body through hole (812); two outer walls on both sides of the box body (811) are respectively provided with two semicircular bosses (814), and the bosses (814) are provided with screw holes (815); the two bosses (814) of the first carbon brush box (81) are respectively placed in the first semicircular positioning groove (4021) and the first second semicircular positioning groove (4022); The bottom ends of the first semicircular positioning groove (4021) and the first second semicircular positioning groove (4022) are both provided with carbon brush positioning holes (4023); the screw holes (815) on the boss (814) correspond to the carbon brush positioning holes (4023).

6. The novel motor according to claim 1 is characterized in that: The tail end of the first bracket (4111) and the tail end of the first second bracket (4112) are connected via a transverse plate (43); a positioning protrusion (432) is also provided on the bottom side of the transverse plate (43); the stator core (1) comprises an upper end surface (11), a plurality of carbon brush mounting holes (111) are provided on the upper end surface, and the positioning protrusion (432) is fixedly inserted in the carbon brush mounting hole (111).

7. The novel motor according to claim 5 is characterized in that: The inner edge of the central through hole (211) is provided with a plurality of mounting ribs (213); the mounting ribs (213) are provided with mounting holes (214); the external connecting piece passes through the mounting holes (214), and then passes through the screw holes (815) on the boss (814), and is inserted into the carbon brush positioning hole (4023); so that the wind cover (2) is fixedly mounted on the carbon brush bracket (4).

8. The novel motor according to claim 2 is characterized in that: The rotor assembly (7) comprises a rotor core (71), a circular rotor through hole is provided in the middle of the rotor core (71); a commutator (72) is installed at the upper end of the rotor core (71); and a commutator through hole is provided in the middle of the commutator (72).

9. The novel motor according to claim 2 is characterized in that: A bracket through hole (51) is provided in the middle of the quadrupole bracket (5); the wind cover (2) is provided with an end cover through hole, and a blade positioning hole (31) is provided at the bottom end of the fan blade (3); the motor is also provided with a rotating shaft (9); the rotating shaft (9) passes through the bracket through hole (51), the rotor through hole, the commutator through hole, and the boss through hole in sequence, and is inserted into the blade positioning hole (31) to be fixedly connected to the fan blade (3).

10. The novel motor according to claim 6, characterized in that: The transverse plate (43) is provided with a first mounting hole (431); the quadrupole bracket is provided with a bracket mounting hole (52); the stator core (1) is provided with a stator through hole (112); the external connecting piece passes through the bracket mounting hole (52), then passes through the stator through hole, and is fixedly mounted in the first mounting hole (431).

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