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 motor transmission device is simple and reasonable in structure and convenient to assemble, the motor transmission device and the tool bit transmission device which are not on the same axis are connected together through the disc and the telescopic connection driving shaft, and meanwhile transmission is stable, noise is low, and cost is low.

Description

Technical Field

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

[0002] The shaver includes a cutter head assembly and a body. The cutter head assembly generally includes a fixed cutter frame assembly, a gear transmission assembly and a cutter head lower cover fixing assembly. When the main machine is turned on, the head connected to the gear transmission assembly and the cutter net mechanism arranged in the fixed cutter frame assembly are driven to rotate. When the moving blade in the cutter net assembly rotates at a high speed, the beard extending into the cutter net can be cut off to achieve the purpose of shaving.

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

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

[0005] 2. 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 messy, affecting the consumer experience.

[0007] After investigation, the existing Chinese patent number CN202220261971.1, "A Waterproof Structure for Electric Shavers", states that the motor transmission and the cutter head transmission of the shaver are not on the same axis, and 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 front outer side 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, the outer side of the transmission shaft is fixedly connected with a first gear, and the output shaft of the motor is fixedly connected with a second gear that matches the first gear, and the first gear is meshed with the second gear. The first gear is a helical gear, which also has the technical problems of complex structure and poor transmission effect. Summary of the invention

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

[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 part 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 bent shafts arranged circumferentially at intervals, and the first transmission plate and the second transmission plate are respectively provided with positioning holes circumferentially at intervals for the two ends of the telescopic connection drive shafts to be inserted and telescoped.

[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 annular direction for inserting and telescoping 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 is 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, 2 to 10 connecting drive shafts are used.

[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 razor, the razor includes a razor head and a body, wherein the razor head includes 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 includes two transmission disks and multiple telescopic connecting drive shafts, wherein the first transmission disk is fixed on the motor shaft, the front end of the second transmission disk is connected to the blade disk in the blade head assembly through the transmission shaft, and the rear end is connected to the first transmission disk 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 disk and the second transmission disk are respectively provided with positioning holes circumferentially at intervals for the two ends of the telescopic connecting drive shaft to be inserted and telescoped.

[0017] Furthermore, the motor is arranged at the upper position inside the fuselage, the first transmission plate is horizontally arranged on the motor, a first connecting sleeve is convexly provided at the middle part of the lower end of the first transmission plate and is fixedly connected to the motor shaft, the second transmission plate is obliquely arranged at the upper front side of the first transmission plate and is on the same axis as the cutter head assembly, a second connecting sleeve is convexly provided at the middle part of the front end of the second transmission plate and is fixedly connected to the transmission shaft, a sleeve is connected to the front end of the transmission shaft, the transmission shaft is transmission-connected to the cutter disc through the sleeve, and the central axes of the first transmission plate and the second transmission plate 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, the telescopic connection drive shafts are 2 to 10 evenly spaced in the annular direction, the first transmission disc and the second transmission disc have corresponding 2 to 10 positioning holes, and 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: two transmission discs are respectively connected to the motor shaft and the cutter disc, and the two transmission discs are connected by a telescopic connection drive shaft such as a steel shaft, so that when the motor rotates, the transmission disc is driven to rotate, and the other transmission disc is driven to rotate through the telescopic connection drive shaft, and then the cutter disc is driven to rotate to achieve shaving. The practical structure is simple and reasonable, and the assembly is convenient. The motor transmission and the cutter head transmission that are not on the same axis are connected together through the transmission disc and the telescopic connection drive shaft. 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 It is a structural schematic diagram of the telescopic elbow reversing transmission mechanism in the electric shaver embodiment of the present invention;

[0022] Figure 2 for Figure 1 Exploded diagram of

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

[0024] Figure 4 2 is a cross-sectional view of an electric shaver according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 4As shown, a telescopic elbow reversing transmission mechanism of a shaver, the shaver comprises a shaver head 1 and a body 2, the shaver head 1 comprises a blade net 11 and a blade assembly, a motor 3, a circuit board 4 and a battery 5 are arranged in the body 2, a telescopic elbow reversing transmission mechanism 7 is arranged between the blade assembly and the motor 3, the telescopic elbow reversing transmission mechanism 7 comprises two transmission discs 71 and 72 and a plurality of telescopic connecting drive shafts, the telescopic connecting drive shafts adopt a telescopic steel shaft 73, wherein the first transmission disc 71 is fixed on the motor shaft 31, and the front end of the second transmission disc 72 is connected to the blade disc 12 in the blade assembly through a transmission shaft 74 The rear end is connected to the first transmission disc 71 through a 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 annularly spaced 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 evenly spaced annularly on the first transmission disc 71 and the second transmission disc 72, 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 lower middle part of the first transmission disc 71 is convexly provided with a first connecting shaft sleeve 712 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 front middle part of the second transmission disc 72 is convexly provided with a second connecting shaft sleeve 722 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 to be 1 to 90°. In this embodiment, there are three telescopic steel shafts 73 evenly spaced in a ring shape, and 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 telescopic.

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

[0029] The body 2 is formed by the front shell 21 and the rear shell 22, wherein the upper end of the front shell 21 is provided with a circular ring 211 that matches the rear end of the milling cutter frame 14, and the circular ring 211 is sleeved on the milling cutter frame 14 and fixed. After the milling cutter cover 13 and the milling cutter frame 14 are matched, a notch is formed on the side for installing the milling cutter push button 15. The circuit board 4 and the battery 5 are installed in the body 2 and located below the motor 3. The lower part of the body 2 is provided with a charging socket 6 that is electrically connected to the circuit board 4 and the battery 5. The bottom of the body 1 is provided with a charging socket. The front end of the front shell 21 is provided with a decorative plate 23. The front shell 21 and the decorative plate 23 are provided with waist-shaped holes for installing the switch movable contact seat 24, and the switch push button 25 is installed on the switch movable contact seat 24.

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

[0031] The present invention 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 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 transmission-connected to the first transmission plate through multiple telescopic connection drive shafts, the telescopic connection drive shafts are bent 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 the two ends of the telescopic connection drive shaft to be inserted and telescoped.

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 telescoping 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, the first transmission plate is horizontally arranged on the motor, a first connecting sleeve is convexly provided at the middle part of the lower end of the first transmission plate and is fixedly connected to the motor shaft, the second transmission plate is obliquely arranged at the upper front side of the first transmission plate and is on the same axis as the cutter head assembly, a second connecting sleeve is convexly provided at the middle part of the front end of the second transmission plate and is fixedly connected to the transmission shaft, a sleeve is connected to the front end of the transmission shaft, the transmission shaft is connected to the cutter disc through the sleeve, and the central axes of the first transmission plate and the second transmission plate 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: The number of the telescopic connection drive shafts is 2 to 10, and the number of the positioning holes on the first transmission disc and the second transmission disc is correspondingly 2 to 10. 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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