Transmission mechanism of motor

Abstract

The utility model discloses a transmission mechanism of a motor, which comprises a fixed seat and a swing piece, the fixed seat is provided with a mounting part, the mounting part is radially and convexly provided with a limiting flange, the side end of the mounting part is provided with a flat cutting groove, a flat cutting surface is formed on one side of the mounting part and the limiting flange corresponding to the flat cutting groove, and the upper end of the mounting part is fixedly provided with a vertically arranged pin shaft; an insertion hole matched with the pin shaft is formed in the middle of the swing part so that the swing part can be rotatably connected to the pin shaft, a limiting groove is formed in the position, corresponding to the limiting flange, of the swing part, and the swing part is limited to vertically move relative to the fixing base through limiting matching of the limiting flange and the limiting groove; the side, corresponding to the pin shaft, of the swing part is provided with an insertion opening allowing a motor shaft to be inserted therein, the other side, corresponding to the pin shaft, of the swing part is provided with a vertically-arranged driving shaft, and through the arrangement, the structure is simple, the size is smaller, and stability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaver, especially a transmission mechanism of motor. BACKGROUND

[0002] At present, in the process of using the shaver, the moving cutter needs to move back and forth at high frequency, and this process needs to be completed with the help of the motor assembly and the transmission mechanism. The existing multi-cutter shaver includes double-cutter device and three-cutter device, wherein the double-cutter shaver can be seen from the double-cutter device and shaver disclosed in Chinese patent application publication No. CN111438712B, the double-cutter device includes a swing frame assembly and a cutter assembly, the swing frame assembly includes a first swing frame and a second swing frame arranged in a containing space, the first swing frame and the second swing frame are connected to the main body and can swing horizontally back and forth under the action of the driving device of the main body, for realizing the shaving operation of the double cutter, the swing head shaped on the first swing frame and the second swing frame at least partially penetrates the activity space and extends to the outside, the double cutter includes a first cutter installed on the first swing frame and a second cutter installed on the second swing frame. The output shaft of the motor assembly drives the first swing frame and the second swing frame to swing synchronously and reversely through the transmission mechanism, that is, a single output shaft realizes the synchronous and reverse swinging of the two swing frames through the transmission mechanism. However, the internal space of the shaver is small, and the existing transmission mechanism is large in size and thus not suitable for the existing shaver, in addition, the stability and reliability of the existing transmission mechanism are poor, and thus it needs to be improved. SUMMARY

[0003] The utility model aims at providing a transmission mechanism of motor, which is simple in structure, smaller in size and higher in stability.

[0004] The above technical purpose of the utility model is realized by the following technical scheme: a transmission mechanism of motor, which comprises

[0005] The fixed seat is provided with a mounting part, the mounting part is radially provided with a limiting flange, the side end of the mounting part is provided with a flat cutting groove, the mounting part and the limiting flange form a flat surface on the side corresponding to the flat cutting groove, and a vertical pin shaft is fixedly installed on the upper end of the mounting part;

[0006] The middle part of the swing piece is provided with a plug hole matched with the pin shaft, so that the swing piece is rotatably connected to the pin shaft, a limiting groove is arranged at the position of the swing piece corresponding to the limiting flange, the limiting flange and the limiting groove are limited in position to limit the vertical movement of the swing piece relative to the fixed seat, a plug opening is arranged on one side of the swing piece corresponding to the pin shaft for inserting the motor shaft, and a vertical driving shaft is installed on the other side of the swing piece corresponding to the pin shaft.

[0007] Further, the limiting groove is an arc-shaped limiting groove, and the swing piece is respectively provided with a limiting surface on the upper side and the lower side of the arc-shaped limiting groove, and the swing piece is limited from moving vertically relative to the fixed seat through cooperation of the limiting surface and the limiting flange.

[0008] Further, the central angle formed on the two sides of the flat cutting surface is greater than or equal to the central angle formed on the two sides of the limiting groove.

[0009] Further, during assembly, the swing piece is inserted into the pin shaft along the limiting groove of the swing piece and opposite the one side of the flat cutting surface of the fixed seat, and the limiting flange is inserted into the limiting groove by rotating the swing piece.

[0010] Further, the socket is a U-shaped groove with an open side, and the open side of the U-shaped groove is arranged on the side away from the driving shaft.

[0011] Further, the width of the socket is matched with the outer diameter of the motor shaft.

[0012] In summary, the utility model has the following beneficial effects:

[0013] The transmission mechanism has the advantages of simple structure, smaller size and higher stability, during assembly, the swing piece is inserted into the pin shaft along the limiting groove of the swing piece and opposite the one side of the flat cutting surface of the fixed seat, and the limiting flange is inserted into the limiting groove by rotating the swing piece, when the motor shaft drives the swing piece to rotate around the pin shaft as the rotation axis, the driving shaft can reciprocatingly swing synchronously with the swing piece, so that the single output of the motor shaft is converted into the double output of the motor shaft and the driving shaft. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is an exploded schematic view of the transmission mechanism of the utility model.

[0015] Figure 2 is a schematic view of the transmission mechanism of the utility model after assembly.

[0016] Figure 3 is a schematic view of the transmission mechanism of the utility model when starting to be assembled.

[0017] Figure 4 is a schematic view of the transmission mechanism of the utility model when being assembled to the motor assembly.

[0018] Figure 5 is a schematic view of the first swing frame and the second swing frame of the utility model when being installed to the transmission mechanism.

[0019] In the figure: 10, fixed seat; 11, mounting portion; 12, limiting flange; 13, flat cutting surface; 14, pin shaft; 20, swing piece; 21, limiting slot; 22, socket; 23, drive shaft; 30, motor assembly; 31, motor shaft; 40, first swing frame; 50, second swing frame; 60, first cutter head; 70, second cutter head. DETAILED DESCRIPTION

[0020] The utility model will be further explained in connection with the drawings below.

[0021] As Figures 1-5 shown, a transmission mechanism of a motor, comprising a fixed seat 10 and a swing piece 20, the fixed seat 10 is equipped with the mounting portion 11, the mounting portion 11 is vertically protruding on the fixed seat 10 upper end, the mounting portion 11 is radially protruding and is equipped with the limiting flange 12, the mounting portion 11 side end is equipped with flat cutting groove, the mounting portion 11 and the limiting flange 12 correspond to the one side of flat cutting groove and form flat cutting surface 13, specifically, the limiting flange 12 is the annular structure of non-integral circle, the shape formed by the downward projection of the limiting flange 12 is the circular ring greater than half circle, the circular ring has an optimal arc and the chord connecting the endpoints of optimal arc, the part of the chord is the part of flat cutting surface 13, the mounting portion 11 upper end is fixedly installed with the vertically arranged pin shaft 14.

[0022] The middle part of the swing piece 20 is provided with the socket matched with the pin shaft 14, so that the swing piece 20 is rotatably connected to the pin shaft 14, so that the swing piece 20 is rotatably connected to the pin shaft 14, the swing piece 20 is provided with the limiting slot 21 corresponding to the position of the limiting flange 12, the limiting flange 12 is limited to the limiting slot 21 to limit the vertical movement of the swing piece 20 relative to the fixed seat 10, the swing piece 20 is provided with the socket 22 for the insertion of the motor shaft 31 on the side corresponding to the pin shaft 14, and the swing piece 20 is provided with the vertically arranged drive shaft 23 on the other side corresponding to the pin shaft 14. The motor shaft 31 is inserted in the first drive slot of the first swing frame 40, and the drive shaft 23 is inserted in the second drive slot of the second swing frame 50. When the motor assembly 30 is driven, the motor shaft 31 drives the first swing frame 40 to reciprocate transversely, so that the first cutter head 60 mounted on the first swing frame 40 reciprocates transversely, and the drive shaft 23 drives the second swing frame 50 to reciprocate transversely, so that the second cutter head 70 mounted on the second swing frame 50 reciprocates transversely.

[0023] The limiting slot 21 is an arc-shaped limiting slot 21, and the swing piece 20 is respectively provided with limiting surfaces on the upper and lower sides corresponding to the arc-shaped limiting slot 21, and the limiting surfaces are limited to the limiting flange 12 to limit the vertical movement of the swing piece 20 relative to the fixed seat 10. By cooperating the arc-shaped slot with the limiting flange 12, it is ensured that the swing piece 20 does not move up and down when reciprocating relative to the fixed seat 10, thereby improving the stability and reliability of the transmission mechanism.

[0024] In some embodiments, the circle central angle formed on both sides of the flat surface 13 is greater than or equal to the circle central angle formed on both sides of the limiting groove 21, through the setting, after the limiting groove 21 of the swing piece 20 is vertically inserted to the flat surface 13 of the fixed seat 10 on one side of the pin shaft 14, the swing piece 20 can rotate relative to the fixed seat 10 without interference.

[0025] When the transmission mechanism is assembled, the swing piece 20 is inserted to the pin shaft 14 along the limiting groove 21 of the swing piece 20 on one side of the flat surface 13 of the fixed seat 10, and the limiting flange 12 is inserted into the limiting groove 21 by rotating the swing piece 20.

[0026] The socket 22 is a U-shaped groove with an open side, and the opening of the U-shaped groove is arranged on the side away from the drive shaft 23, through the design of the socket 22, so that the motor shaft 31 can be inserted into the socket 22.

[0027] The width of the socket 22 is matched with the outer diameter of the motor shaft 31, through the setting, so that the assembly of the motor shaft 31 and the socket 22 is more compact, and the linkage effect is more compact.

[0028] In summary, the utility model has the following beneficial effects:

[0029] The transmission mechanism has the advantages of simple structure, smaller size and higher stability, when assembled, the swing piece 20 is vertically inserted to the pin shaft 14 along the limiting groove 21 of the swing piece 20 on one side of the flat surface 13 of the fixed seat 10, and the limiting flange 12 is inserted into the limiting groove 21 by rotating the swing piece 20, when the swing piece 20 and the fixed seat 10 are assembled, the motor assembly 30 is assembled. When the motor shaft 31 drives the swing piece 20 to rotate around the pin shaft 14 as the rotation axis, the drive shaft 23 can synchronously reciprocate with the swing piece 20, so that the single output of the motor shaft 31 is converted into the double output of the motor shaft 31 and the drive shaft 23.

[0030] The above is only a preferred embodiment of the utility model, so equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application range are included in the utility model patent application range.

Claims

1. A transmission mechanism for an electric machine, characterized by: The utility model relates to a swing type motor shaft fixing device which comprises a fixing base (10) provided with a mounting part (11) radially provided with a limiting flange (12), a flat cutting groove is arranged at the side end of the mounting part (11), a flat cutting surface (13) is formed on the side of the mounting part (11) and the limiting flange (12) corresponding to the flat cutting groove, a vertical pin shaft (14) is fixedly arranged at the upper end of the mounting part (11); a swing piece (20) is arranged at the middle part of the swing piece (20) and provided with a plug hole matched with the pin shaft (14), so that the swing piece (20) is rotatably connected to the pin shaft (14), a limiting groove (21) is arranged at the position of the swing piece (20) corresponding to the limiting flange (12), the limiting flange (12) and the limiting groove (21) are limitedly matched to limit the vertical movement of the swing piece (20) relative to the fixing base (10), a plug opening (22) is arranged at the side of the swing piece (20) corresponding to the pin shaft (14) and matched with the motor shaft (31), and a vertical driving shaft (23) is arranged at the other side of the swing piece (20) corresponding to the pin shaft (14). The limiting groove (21) is an arc-shaped limiting groove (21), limiting surfaces are arranged at the upper and lower sides of the swing piece (20) corresponding to the arc-shaped limiting groove (21), and the limiting surfaces and the limiting flange (12) are matched to limit the vertical movement of the swing piece (20) relative to the fixing base (10).

2. A transmission mechanism for an electric machine according to claim 1, characterized in that: The central angles formed at the two sides of the flat cutting surface (13) are greater than or equal to the central angles formed at the two sides of the limiting groove (21).

3. A transmission mechanism for an electric machine according to claim 2, characterized in that: During assembly, the swing piece (20) is inserted into the pin shaft (14) along the limiting groove (21) of the swing piece (20) and opposite to the side of the flat cutting surface (13) of the fixing base (10), and the limiting flange (12) is inserted into the limiting groove (21) by rotating the swing piece (20).

4. A transmission mechanism for an electric machine according to claim 2, characterized in that: The plug opening (22) is a U-shaped groove with an open side away from the driving shaft (23).

5. A transmission mechanism for an electric machine as defined in claim 1, characterized in that: The width of the plug opening (22) is matched with the outer diameter of the motor shaft (31).

6. A transmission mechanism for an electric machine according to claim 1, characterized in that: ​

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