Elbow reversing transmission mechanism and telescopic elbow reversing transmission mechanism of shaver thereof

Abstract

The telescopic elbow reversing transmission mechanism of the shaver comprises two transmission discs and a plurality of telescopic connection driving shafts, the first transmission disc is fixed on a motor shaft, the front end of the second transmission disc is connected with a functional part through a transmission shaft, and the telescopic connection driving shafts are connected with the transmission shaft. The rear end of the first transmission disc is in transmission connection with the first transmission disc through a plurality of telescopic connection driving shafts, the telescopic connection driving shafts are bent shafts arranged at intervals in the annular direction, and positioning holes allowing the two ends of the telescopic connection driving shafts to be inserted and stretch are formed in the first transmission disc and the second transmission disc at intervals in the annular direction; the utility model has the advantages that the structure is simple and reasonable, the assembly is convenient, the motor transmission and the tool bit transmission which are not on the same axis are connected together through the disc and the telescopic connection driving shaft, the transmission is stable, the noise is low, and the cost is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of shavers, and particularly relates to a telescopic elbow reversing transmission mechanism of a shaver. Background Art

[0002] With the continuous improvement of people's living standards, various small household appliances have become part of everyday life. As a shaving tool, razors are very popular among men. A razor consists of a head assembly and a body. The head assembly generally includes a fixed blade assembly, a gear transmission assembly, and a head cover fixing assembly. When the main unit is turned on, it drives the head assembly connected to the gear transmission assembly and the blade mesh mechanism within the fixed blade assembly to rotate. The moving blades in the blade mesh assembly rotate at high speed, cutting off any hair that reaches into the blade mesh, achieving the desired shaving effect.

[0003] In current shavers, the cutter head drive assembly is mostly connected to the motor on the same axis. When the motor drive and the cutter head drive are not on the same axis, the current main solution is to use complex helical gears to change the angle and then drive. This transmission method has the following defects during use:

[0004] 1. Gear manufacturing is complex, costly, and has poor stability;

[0005] Second, when the helical gear changes the transmission angle, the assembly accuracy is high. When the helical gear does not match the transmission in two directions, it is easy to get stuck, affecting the transmission efficiency.

[0006] 3. When the gear transmission clearance is not well matched, the sound is relatively messy, affecting the consumer experience.

[0007] Upon investigation, the existing Chinese patent number CN202220261971.1, "A Waterproof Structure for an Electric Shaver," states that the motor drive and the cutter head drive of the shaver are not on the same axis. The transmission assembly consists of a fixed cover, a transmission shaft, a sealing cover, and a limit frame. The limit frame is sleeved on the outside of the front end of the motor, one end of the sealing cover is rotatably connected to the limit frame, the transmission shaft is rotatably connected to the sealing cover, a first gear is fixedly connected to the outside of the transmission shaft, and a second gear that matches the first gear is fixedly connected to the output shaft of the motor, and the first gear and the second gear are meshed. The first gear is a helical gear, which also has the technical problems of complex structure and poor transmission effect. Utility Model Content

[0008] The primary technical problem to be solved by the present invention is to provide an elbow reversing transmission mechanism with a simple and reasonable structure, convenient assembly, stable transmission and suitable for variable angle transmission in response to the above technical status quo.

[0009] Another technical problem to be solved by the present invention is to provide a telescopic elbow reversing transmission mechanism for a shaver with a simple and reasonable structure, convenient assembly, stable transmission and suitable for variable angle transmission in response to the above technical status quo.

[0010] The technical solution adopted by the present invention to solve the above-mentioned primary technical problem is: an elbow reversing transmission mechanism, characterized in that it includes two transmission plates and a plurality of telescopic connection drive shafts, wherein the first transmission plate is fixed on the motor shaft, the front end of the second transmission plate is connected to the functional component through the transmission shaft, and the rear end is transmission-connected to the first transmission plate through a plurality of telescopic connection drive shafts, the telescopic connection drive shafts are curved shafts arranged at annular intervals, and the first transmission plate and the second transmission plate are respectively provided with positioning holes at annular intervals for inserting and retracting the two ends of the telescopic connection drive shafts.

[0011] Preferably, the main bodies of the first transmission disc and the second transmission disc adopt a disc structure, forming the first transmission disc and the second transmission disc.

[0012] Furthermore, the first transmission disc and the second transmission disc are respectively provided with positioning holes evenly spaced in an annular direction for inserting and extending the two ends of the telescopic connection drive shaft, and the two ends of the telescopic connection drive shaft are perpendicular to the first transmission disc and the second transmission disc.

[0013] Furthermore, the first transmission disc is arranged horizontally and fixedly connected to the motor shaft; and the second transmission disc is arranged obliquely on the side of the first transmission disc, and the central axes of the two form an angle.

[0014] Preferably, the number of the connecting drive shafts is 2 to 10.

[0015] More preferably, three connecting drive shafts are used and are evenly spaced circumferentially.

[0016] The technical solution adopted by the present invention to solve the above-mentioned another technical problem is: a telescopic elbow reversing transmission mechanism of a shaver, the shaver comprising a shaver head and a body, wherein the shaver head comprises a blade net and a blade head assembly, and the body is provided with a motor, a circuit board and a battery, and is characterized in that: the telescopic elbow reversing transmission mechanism comprises two transmission discs and multiple telescopic connecting drive shafts, wherein the first transmission disc is fixed on the motor shaft, the front end of the second transmission disc is connected to the blade disc in the blade head assembly through the transmission shaft, and the rear end is connected to the first transmission disc through the telescopic connecting drive shaft, the telescopic connecting drive shaft is a bent connecting drive shaft arranged circumferentially at intervals, and the first transmission disc and the second transmission disc are respectively provided with circumferentially spaced positioning holes for inserting and retracting the two ends of the telescopic connecting drive shaft.

[0017] Furthermore, the motor is arranged at the upper position inside the fuselage, the first transmission disc is horizontally arranged on the motor, the middle part of the lower end of the first transmission disc is protruded with a first connecting sleeve fixedly connected to the motor shaft, the second transmission disc is obliquely arranged on the upper front side of the first transmission disc and is on the same axis as the cutter head assembly, the middle part of the front end of the second transmission disc is protruded with a second connecting sleeve fixedly connected to the transmission shaft, the front end of the transmission shaft is connected with a sleeve, and the transmission shaft is connected to the cutter disc through the sleeve, and the central axes of the first transmission disc and the second transmission disc form an angle.

[0018] Preferably, the first transmission disc and the second transmission disc adopt a disc structure, forming a first transmission disc and a second transmission disc.

[0019] Finally, there are 2 to 10 telescopic connection drive shafts evenly spaced in the circumferential direction, and there are 2 to 10 corresponding positioning holes on the first transmission disc and the second transmission disc. The two ends of the telescopic connection drive shaft are respectively inserted into the positioning holes of the first transmission disc and the second transmission disc, and are perpendicular to the first transmission disc and the second transmission disc.

[0020] Compared with the prior art, the advantages of the present invention are that it uses two transmission discs connected to the motor shaft and the cutter disc respectively, and the two transmission discs are connected by a telescopic connecting drive shaft, such as a steel shaft. In this way, when the motor rotates, the transmission disc rotates, and the telescopic connecting drive shaft drives the other transmission disc to rotate, which in turn drives the cutter disc to rotate, achieving shaving. The present invention has a simple and reasonable structure and is easy to assemble. The transmission disc and the telescopic connecting drive shaft connect the motor drive and the cutter head drive, which are not on the same axis, together. At the same time, the transmission is stable, the noise is low, and the cost is low. It is also suitable for application in some variable-angle transmission mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the telescopic elbow reversing transmission mechanism in an electric shaver embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Exploded view of

[0023] Figure 3 This is an exploded view of an electric shaver according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of an electric shaver according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 4As shown, a telescopic elbow reversing transmission mechanism of a shaver, the shaver includes a shaver head 1 and a body 2, the shaver head 1 includes a blade net 11 and a cutter head assembly, the body 2 is provided with a motor 3, a circuit board 4 and a battery 5, the telescopic elbow reversing transmission mechanism 7 is arranged between the cutter head assembly and the motor 3, the telescopic elbow reversing transmission mechanism 7 includes two transmission discs 71 and 72 and a plurality of telescopic connecting drive shafts, the telescopic connecting drive shafts using a telescopic steel shaft 73, wherein the first transmission disc 71 is fixed to the motor shaft 31, and the front end of the second transmission disc 72 is connected to the cutter disc 12 in the cutter head assembly via a transmission shaft 74. Then, the rear end is connected to the first transmission disc 71 through the telescopic steel shaft 73. The telescopic steel shaft 73 is a bent steel shaft arranged at an annular interval. The bending angle is generally consistent with the transmission change angle. The first transmission disc 71 and the second transmission disc 72 are respectively provided with annular positioning holes 711 and 721 for the two ends of the telescopic steel shaft 73 to be inserted and telescoped. It is usually preferred that the positioning holes 711 and 721 are arranged on the first transmission disc 71 and the second transmission disc 72 at an annular uniform interval, and the telescopic steel shafts 73 are also evenly spaced annularly, so that the drive is smoother and the force is more balanced.

[0027] The specific structure is as follows: the motor 3 is arranged at the upper position inside the fuselage 2, the first transmission disc 71 is horizontally arranged on the motor 3, the middle part of the lower end of the first transmission disc 71 is convexly provided with a first connecting shaft sleeve 712 which is fixedly connected to the motor shaft 31, the second transmission disc 72 is obliquely arranged on the upper front side of the first transmission disc 71 and is on the same axis as the cutter head assembly, the middle part of the front end of the second transmission disc 72 is convexly provided with a second connecting shaft sleeve 722 which is fixedly connected to the transmission shaft 74, the front end of the transmission shaft 74 is connected with a shaft sleeve 75, and the transmission shaft 74 is transmission-connected to the cutter disc 12 through the shaft sleeve 75, so that the central axes of the first transmission disc 71 and the second transmission disc 72 form an angle, and the angle is generally controlled at 1 to 90 degrees. In this embodiment, there are three telescopic steel shafts 73 arranged in a ring with uniform intervals. There are three corresponding positioning holes 711 and 721 on the first transmission disc 71 and the second transmission disc 72. The two ends of the telescopic steel shaft 73 are respectively inserted into the positioning holes 711 and 721, and are perpendicular to the first transmission disc 71 and the second transmission disc 72, and can be appropriately extended and retracted.

[0028] The cutter head assembly includes a cutter disc 12, a guillotine cover 13, and a guillotine frame 14, which are coaxially arranged in sequence. The rear end of the guillotine frame 14 is fixedly connected to the body 2. The guillotine cover 13 is arranged on the guillotine frame 14 in a manner corresponding to the cutter disc 12. The cutter disc 12 is arranged above the guillotine cover 13. The cutter disc 12 is mounted with a blade 10. A through hole is provided in the middle of the guillotine frame 14 for the transmission shaft 74 to pass through. A connecting cylinder 16 is provided in the middle of the rear end surface of the cutter disc 12, which is connected to the shaft sleeve 75. An opening 18 is provided in the middle of the guillotine cover 13 for the connecting cylinder 17 to pass through. A circular groove is provided on the front end surface of the guillotine frame 14 around the through hole, and a bearing 76 is mounted in the circular groove.

[0029] The body 2 is composed of a front shell 21 and a rear shell 22. The upper end of the front shell 21 is fitted with a circular collar 211 that mates with the rear end of the guillotine frame 14. The collar 211 fits over the guillotine frame 14 and secures it. The guillotine cover 13, when mated with the guillotine frame 14, forms a notch on its side for mounting the guillotine push button 15. The circuit board 4 and battery 5 are installed within the body 2, below the motor 3. A charging socket 6 is installed in the lower portion of the body 2, electrically connecting to the circuit board 4 and battery 5. A charging port is located at the bottom of the body 1. A decorative panel 23 is mounted on the front end of the front shell 21. Both the front shell 21 and the decorative panel 23 contain waist-shaped holes for mounting the switch contact 24, on which the switch push button 25 is mounted.

[0030] The working principle is as follows: the motor rotates, driving the first transmission disc 71 to rotate, which in turn drives the second transmission disc 72 to rotate through the telescopic steel shaft 73, and then drives the cutter disc 12 to rotate, thereby achieving shaving.

[0031] The utility model solves the problem that the motor assembly and the cutter head assembly are connected and transmitted at different angles on different axes, avoids the problems of jamming and noise caused by using complex helical gears for connection, and has simple assembly, stable transmission and low cost.

[0032] Of course, the telescopic elbow reversing transmission mechanism in the shaver can also be used in some small household appliances such as fans with variable angle transmission, lint trimmers, etc., in which the variable angle transmission between the motor and functional parts such as fan blades or cutter heads can adopt the telescopic elbow reversing transmission mechanism in this embodiment.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An elbow reversing transmission mechanism, characterized in that: It includes two transmission plates and several telescopic connection drive shafts, wherein the first transmission plate is fixed on the motor shaft, the front end of the second transmission plate is connected to the functional part through the transmission shaft, and the rear end is connected to the first transmission plate through multiple telescopic connection drive shafts. The telescopic connection drive shafts are bent shafts arranged at circumferential intervals. The first transmission plate and the second transmission plate are respectively provided with positioning holes circumferentially spaced apart for the insertion and extension of the two ends of the telescopic connection drive shafts.

2. The elbow reversing transmission mechanism according to claim 1, characterized in that: The main bodies of the first transmission disc and the second transmission disc adopt a disc structure, forming the first transmission disc and the second transmission disc.

3. The elbow reversing transmission mechanism according to claim 1, characterized in that: The first transmission disc and the second transmission disc are respectively provided with positioning holes evenly spaced in an annular direction for inserting and extending the two ends of the telescopic connection drive shaft, and the two ends of the telescopic connection drive shaft are perpendicular to the first transmission disc and the second transmission disc.

4. The elbow reversing transmission mechanism according to claim 1, characterized in that: The first transmission disc is arranged horizontally and is fixedly connected to the motor shaft; the second transmission disc is arranged obliquely on the side of the first transmission disc, and the central axes of the two form an angle.

5. The elbow reversing transmission mechanism according to claim 1, characterized in that: The connecting drive shafts are 2 to 10 in number.

6. The elbow reversing transmission mechanism according to claim 5, characterized in that: The connecting drive shafts are three and are evenly spaced in the circumferential direction.

7. A telescopic elbow reversing transmission mechanism for a shaver, the shaver comprising a shaver head and a body, wherein the shaver head comprises a blade net and a blade assembly, and the body is provided with a motor, a circuit board, and a battery, characterized in that: The telescopic elbow reversing transmission mechanism includes two transmission discs and multiple telescopic connecting drive shafts, wherein the first transmission disc is fixed on the motor shaft, the front end of the second transmission disc is connected to the cutter disc in the cutter head assembly through the transmission shaft, and the rear end is connected to the first transmission disc through the telescopic connecting drive shaft. The telescopic connecting drive shaft is a bent connecting drive shaft arranged circumferentially at intervals, and the first transmission disc and the second transmission disc are respectively provided with positioning holes circumferentially at intervals for the two ends of the telescopic connecting drive shaft to be inserted and telescoped.

8. The telescopic elbow reversing transmission mechanism according to claim 7, characterized in that: The motor is arranged at the upper position inside the fuselage, and the first transmission disc is horizontally arranged on the motor. A first connecting shaft sleeve is protruded from the middle part of the lower end of the first transmission disc and is fixedly connected to the motor shaft. The second transmission disc is obliquely arranged on the upper front side of the first transmission disc and is on the same axis as the cutter head assembly. A second connecting shaft sleeve is protruded from the middle part of the front end of the second transmission disc and is fixedly connected to the transmission shaft. The front end of the transmission shaft is connected with a shaft sleeve, and the transmission shaft is connected to the cutter disc through the shaft sleeve. The central axes of the first transmission disc and the second transmission disc form an angle.

9. The telescopic elbow reversing transmission mechanism according to claim 8, characterized in that: The first transmission disc and the second transmission disc adopt a disc structure, forming a first transmission disc and a second transmission disc.

10. The telescopic elbow reversing transmission mechanism according to claim 9, characterized in that: There are 2 to 10 telescopic connection drive shafts arranged evenly spaced in the circumferential direction, and there are corresponding 2 to 10 positioning holes on the first transmission disc and the second transmission disc. The two ends of the telescopic connection drive shaft are respectively inserted into the positioning holes of the first transmission disc and the second transmission disc, and are perpendicular to the first transmission disc and the second transmission disc.

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