Electric series excited motor

Abstract

The invention discloses an electric series motor, and relates to the technical field of series motors, and the electric series motor comprises a series motor body, the rear side of the series motor body is provided with a rear cover, the front side of the series motor body is provided with a front cover, and the front side of the series motor body is provided with a motor shaft extending to the front side of the front cover. The top of the series excited motor body is provided with a junction box. Wherein the two ends of the front side and the rear side of the series excited motor body are obliquely provided with connecting rods, and the connecting rods are provided with fixing blocks with screw holes; the heat dissipation fins are arranged on the movable heat dissipation plate, and the gap between the heat dissipation plate and the series excited motor body is tightly filled with the heat conduction silica gel sheet, so that heat of the series excited motor body can be transmitted to the heat dissipation plate through the heat conduction silica gel sheet, heat dissipation is facilitated through the heat dissipation fins, heat dissipation is guaranteed, and the service life of the series excited motor is prolonged. And the heat dissipation fins can be detachable, so that the heat dissipation fins are convenient to clean.

Description

Technical Field

[0001] The present invention relates to the technical field of series-excited motors, in particular to an electric series-excited motor. Background Art

[0002] Single-phase series-excited motors are commonly known as series-excited motors. They are named because the excitation winding and the field winding are connected in series and work together. Single-phase series-excited motors are dual-purpose motors. They can use both AC and DC power supplies. Among them, single-phase series-excited motors have high speed, small size, light weight, and easy speed regulation, so they are used as power sources in most power tools.

[0003] At present, the outer side of the electric series motor has cooling fins arranged in a circular pattern. After the electric series motor has been used for a period of time, dust will adhere to the outer surface. When there is too much dust, it will affect the heat dissipation of the cooling fins. Therefore, it is necessary to wipe the dust regularly with a rag to ensure the heat dissipation of the cooling fins.

[0004] However, the current cooling fins are all fixed on the outer wall of the motor. It is often difficult to clean the cooling fins at the bottom of the outer wall of the motor. Generally, the motor needs to be removed. When the motor is removed, the driven parts of the motor shaft often need to be removed, which makes cleaning particularly laborious. For this reason, we propose an electric series-excited motor. Summary of the invention

[0005] The object of the present invention is to provide an electric series motor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an electric series motor, comprising a series motor body, a rear cover is arranged at the rear side of the series motor body, a front cover is arranged at the front side of the series motor body, a motor shaft extending to the front side of the front cover is arranged at the front side of the series motor body, and a junction box is arranged at the top of the series motor body;

[0007] Wherein, connecting rods are obliquely arranged at both ends of the front and rear sides of the series-excited motor body, and fixing blocks with screw holes are arranged on the connecting rods;

[0008] Both ends of the outer side of the series-excited motor body are fitted with heat-conducting silicone sheets, and the opposite sides of the heat-conducting silicone sheets on both sides are in contact with each other, and heat-dissipating plates are arranged on the outer sides of the heat-conducting silicone sheets on both sides, and the opposite sides of the heat-dissipating plates on both sides are also in contact with each other, wherein the heat-conducting silicone sheets and the heat-dissipating plates are both semicircular in structure and avoid the junction box, and heat-dissipating fins are evenly arranged on the outer sides of the heat-dissipating plates;

[0009] The ends of the heat dissipation plates on both sides which are away from each other are both provided with mounting components.

[0010] As a preferred solution of an electric series-excited motor described in the present invention, the mounting assembly includes a fixing rod, the fixing rod is connected to the heat sink, a slider is provided at the bottom of the fixing rod, the slider is slidably connected to a slide rail, and a bolt threadedly connected to the slider is provided on the slide rail, support rods are provided at both ends of the slide rail, and the support rods on both sides are respectively connected to the fixing blocks on the front and rear sides.

[0011] As a preferred solution of the electric series motor described in the present invention, the ends of the two side slide rails that are away from each other are both open.

[0012] As a preferred solution of the electric series-excited motor described in the present invention, wherein: a through slot is vertically opened on the fixed rod, a protruding rod is slidably connected to the through slot, a positioning rod is arranged at the bottom of the protruding rod, and the bottom of the positioning rod successively passes through the slider and the slide rail.

[0013] As a preferred solution of the electric series motor described in the present invention, a spring connected to the inner wall of the bottom of the through groove is also provided at the bottom of the protruding rod.

[0014] As a preferred solution of the electric series-excited motor described in the present invention, the top heights of the slide rail, the support rod and the fixed block are the same, and the top height of the slide rail is lower than the bottom height of the bottom heat dissipation fin.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Set the heat sink fins on a movable heat sink, and fill the gap between the heat sink and the series motor body with a thermally conductive silicone sheet, so that the heat of the series motor body can be transferred to the heat sink through the thermally conductive silicone sheet, so as to dissipate heat through the heat sink fins, thereby ensuring heat dissipation and making the heat sink fins removable for easy cleaning;

[0017] 2. By setting up the installation components, it is convenient to quickly disassemble and assemble the heat sink fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an electric series motor of the present invention;

[0019] Figure 2 It is a front view schematic diagram of the overall structure of an electric series motor of the present invention;

[0020] Figure 3 It is a schematic cross-sectional view of the mounting assembly structure of an electric series motor of the present invention.

[0021] In the figure: 1. series-excited motor body; 2. rear cover; 3. front cover; 4. motor shaft; 5. junction box; 6. thermal conductive silicone sheet; 7. heat sink; 8. heat sink fins; 9. connecting rod; 10. fixing block; 11. fixing rod; 12. slider; 13. slide rail; 14. bolt; 15. support rod; 16. through slot; 17. protruding rod; 18. spring; 19. positioning rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0023] As mentioned in the background art, in order to solve the problem that it is inconvenient to clean the heat sink fins in the prior art, the present invention provides an electric series motor.

[0024] Example 1

[0025] Reference Figures 1 to 3 An electric series motor comprises a series motor body 1, a rear cover 2 is arranged at the rear side of the series motor body 1, a front cover 3 is arranged at the front side of the series motor body 1, a motor shaft 4 extending to the front side of the front cover 3 is arranged at the front side of the series motor body 1, and a junction box 5 is arranged at the top of the series motor body 1;

[0026] Wherein, connecting rods 9 are obliquely arranged at both ends of the front and rear sides of the series motor body 1, and a fixing block 10 with a screw hole is arranged on the connecting rod 9 for fixing the series motor body 1;

[0027] Both ends of the outer side of the series motor body 1 are fitted with heat-conducting silicone sheets 6, and the opposite sides of the heat-conducting silicone sheets 6 on both sides are in contact with each other, and heat-dissipating plates 7 are arranged on the outer sides of the heat-conducting silicone sheets 6 on both sides, and the opposite sides of the heat-dissipating plates 7 on both sides are also in contact with each other, wherein the heat-conducting silicone sheets 6 and the heat-dissipating plates 7 are both semicircular structures and avoid the junction box 5, wherein heat-dissipating fins 8 are evenly arranged on the outer side of the heat-dissipating plates 7, and the heat-conducting silicone sheets 6 tightly fill the gap between the series motor body 1 and the heat-dissipating plates 7, so as to facilitate the heat transfer to the heat-dissipating plates 7, so that the heat-dissipating fins 8 can dissipate the heat;

[0028] The ends of the heat dissipation plates 7 on both sides which are away from each other are both provided with mounting components.

[0029] The heat sink 7 can be disassembled and assembled by installing the assembly, thereby ensuring heat dissipation while making the heat sink fins 8 detachable for easy cleaning.

[0030] The mounting assembly includes a fixing rod 11, which is connected to the heat sink 7. A slider 12 is provided at the bottom of the fixing rod 11. The slider 12 is slidably connected to a slide rail 13, and a bolt 14 screwed to the slider 12 is provided on the slide rail 13, so that the slider 12 is fixed, thereby fixing the fixing rod 11 and the heat sink 7. Support rods 15 are provided at both front and rear ends of the slide rail 13, and the support rods 15 on both sides are respectively connected to the fixing blocks 10 on the front and rear sides, and the support rods 15 are used to fix the slide rail 13.

[0031] The ends of the slide rails 13 on both sides that are away from each other are both open, so that the slider 12 can be moved out of the slide rail 13 to facilitate the removal of the heat sink 7.

[0032] In order to position the slider 12 so as to free up hands for installing the bolt 14, a through slot 16 is vertically opened on the fixing rod 11, a protruding rod 17 is slidably connected to the through slot 16, a positioning rod 19 is provided at the bottom of the protruding rod 17, and the bottom of the positioning rod 19 successively passes through the slider 12 and the slide rail 13.

[0033] In order to ensure that the positioning rod 19 can stably position the slider 12 , a spring 18 connected to the inner wall of the bottom of the through slot 16 is further provided at the bottom of the protruding rod 17 .

[0034] Example 2

[0035] Reference Figures 1 to 3 The top heights of the slide rail 13, the support rod 15 and the fixed block 10 are the same, and the top height of the slide rail 13 is lower than the bottom height of the bottom heat sink fin 8, so that when the heat sink 7 and the heat sink fin 8 are moved horizontally, they will not be hindered by the slide rail 13, the support rod 15 and the fixed block 10.

[0036] The rest of the structure is the same as that of Example 1.

[0037] When the heat sink fins 8 need to be cleaned, remove the bolts 14 and push the protruding rod 17 upwards, then pull the fixing rods 11 at both ends toward the side away from the series-excited motor body 1, so that the heat sink 7 can drive the heat sink fins 8 away from the series-excited motor body 1 for easy cleaning.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric series motor, characterized in that: include, A series motor body (1), wherein a rear cover (2) is arranged on the rear side of the series motor body (1), a front cover (3) is arranged on the front side of the series motor body (1), a motor shaft (4) extending to the front side of the front cover (3) is arranged on the front side of the series motor body (1), and a junction box (5) is arranged on the top of the series motor body (1); Wherein, connecting rods (9) are obliquely arranged at both ends of the front and rear sides of the series-excited motor body (1), and a fixing block (10) with a screw hole is arranged on the connecting rod (9); Both ends of the outer side of the series-excited motor body (1) are fitted with heat-conducting silicone sheets (6), the opposite sides of the heat-conducting silicone sheets (6) on both sides are in contact with each other, and heat-dissipating plates (7) are arranged on the outer sides of the heat-conducting silicone sheets (6), the opposite sides of the heat-dissipating plates (7) on both sides are also in contact with each other, wherein the heat-conducting silicone sheets (6) and the heat-dissipating plates (7) are both semicircular in structure and avoid the junction box (5), and heat-dissipating fins (8) are evenly arranged on the outer sides of the heat-dissipating plates (7); The ends of the heat dissipation plates (7) on both sides which are away from each other are both provided with mounting components.

2. An electric series motor according to claim 1, characterized in that: The mounting assembly comprises a fixing rod (11), the fixing rod (11) being connected to the heat dissipation plate (7), a slider (12) being arranged at the bottom of the fixing rod (11), the slider (12) being slidably connected to a slide rail (13), and a bolt (14) being screwed to the slider (12) being arranged on the slide rail (13), support rods (15) being arranged at both front and rear ends of the slide rail (13), and the support rods (15) on both sides are respectively connected to the fixing blocks (10) on the front and rear sides.

3. An electric series motor according to claim 2, characterized in that: The ends of the slide rails (13) on both sides that are away from each other are both in an open shape.

4. An electric series motor according to claim 2, characterized in that: The fixing rod (11) is vertically provided with a through slot (16), the through slot (16) is slidably connected with a protruding rod (17), a positioning rod (19) is arranged at the bottom of the protruding rod (17), and the bottom of the positioning rod (19) successively passes through the sliding block (12) and the sliding rail (13).

5. An electric series motor according to claim 4, characterized in that: The bottom of the protruding rod (17) is also provided with a spring (18) connected to the inner wall of the bottom of the through groove (16).

6. An electric series motor according to claim 2, characterized in that: The tops of the slide rail (13), the support rod (15) and the fixed block (10) are at the same height, and the top of the slide rail (13) is lower than the bottom of the bottom heat dissipation fin (8).

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