Double-layer eccentric wheel structure of shaver and reciprocating shaver thereof

Abstract

The reciprocating type shaver comprises a shaver body, a motor, a battery, the double-layer eccentric wheel structure and other main components are installed in the shaver body, the double-layer eccentric wheel structure comprises an upper wheel disc and a lower wheel disc, and the double-layer eccentric wheel structure is characterized in that the upper wheel disc and the lower wheel disc are coaxially arranged with a motor shaft; an upper eccentric shaft is installed at the upper end of the upper wheel disc, a connecting hole connected with a motor shaft is concavely formed in the center of the bottom of the lower wheel disc, the upper wheel disc and the lower wheel disc are fixedly connected through a connecting shaft, and the connecting shaft is arranged on the side away from the upper eccentric shaft. The shaver is simpler and more reasonable in structure, convenient to machine, low in cost, stable in operation, easy and smooth in shaving and capable of effectively reducing noise.

Description

Technical Field

[0001] The utility model belongs to the technical field of shavers, and in particular relates to a double-layer eccentric wheel structure of a shaver and a reciprocating shaver. Background Art

[0002] As people's living standards continue to improve, various small household appliances have also entered the lives of ordinary people. Shavers are popular among men as a shaving tool. Electric shavers are mainly divided into two types: rotary and reciprocating. Among them, reciprocating shavers are more popular because they do not cause pulling during the shaving process and are more comfortable. The blade of a reciprocating shaver is in a straight line shape, and the motor drives the blade to move back and forth to cut the beard through the deflection gear.

[0003] The eccentric wheels of the previous reciprocating shaver are two, the upper and lower eccentric wheels are assembled together through a connecting rod, and usually include a driving group, a driver, and a cutter head frame. The driving group includes a micro motor and a main eccentric wheel, a first driving connecting rod, an upper eccentric wheel, and a second driving connecting rod sequentially installed on the micro motor shaft; the driver includes a first driver and a second driver, the first driver is connected to the first driving connecting rod, and the second driver is connected to the second driving connecting rod; the cutter head frame includes a first cutter head fixing frame, a second cutter head fixing frame, a first floating spring, and a second floating spring, the first cutter head fixing frame is connected to the first driver, the first floating spring is arranged between the first cutter head fixing frame and the first driver, the second cutter head fixing frame is connected to the second driver, and the second floating spring is arranged between the second cutter head fixing frame and the second driver. The main eccentric wheel and the upper eccentric wheel of this structure are connected through the first driving connecting rod, and its defects are: the structure is relatively complex, the manufacturing and processing are troublesome, and the cost is high.

[0004] At present, there is also a double-layer eccentric wheel structure, which usually includes two eccentric shafts, the two eccentric axes and the center line of the hole for assembling the motor shaft are on the same plane, and the flat square width of the upper eccentric shaft is smaller than the outer diameter of the lower eccentric shaft. The two eccentric shafts of this structure are integrated, eliminating the mold processing of the connecting rod, but the operation is not stable enough and there are problems such as high noise, and further improvement is needed in the structural design. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a double-layer eccentric wheel structure of a shaver and a reciprocating shaver with a simpler and more reasonable structure and convenient processing in view of the above technical status quo, and at the same time have the characteristics of stable operation, small vibration and low noise.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a double-layer eccentric wheel structure of a shaver, including an upper wheel disc and a lower wheel disc, characterized in that: the upper wheel disc and the lower wheel disc are coaxially arranged with the motor shaft, an upper eccentric shaft is installed on the upper end of the upper wheel disc, a connecting hole connected to the motor shaft is recessed at the bottom center of the lower wheel disc, the upper wheel disc and the lower wheel disc are fixedly connected by a connecting shaft, and the connecting shaft is arranged on a side away from the upper eccentric shaft.

[0007] As an improvement, the upper wheel disc and the lower wheel disc are both circular disc structures with bidirectional cutting edges, and the width of the upper wheel disc is smaller than that of the lower wheel disc, and the thickness of the upper wheel disc is smaller than that of the lower wheel disc.

[0008] Furthermore, the connecting hole is concentric with the outer circular hole of the lower wheel disc, and the diameter of the upper eccentric shaft is less than or equal to the diameter of the connecting shaft.

[0009] Furthermore, the upper eccentric shaft, the connecting shaft and the motor shaft are on the same plane.

[0010] Furthermore, a shaft sleeve is provided below the lower wheel disc, a bearing is provided inside the shaft sleeve, the motor shaft passes through the bearing and is transmission-connected to the connecting hole of the lower wheel disc, and the upper eccentric shaft is connected to the swing frame.

[0011] Preferably, there are two swing frames on the left and right, which are installed in the swing frame bracket and the two driving sub-transmission structures, wherein the middle part of the lower end of the left swing frame is provided with a left slide groove for inserting the upper eccentric shaft, and the left swing frame is connected to the right swing frame by a movable plug-in fit.

[0012] Furthermore, the movable plug-in connection is that there is an overlapping portion between the left swing frame and the right swing frame, and an inverted U-shaped arched portion is formed above the overlapping portion of one of the swing frames for the upper wheel to move; correspondingly, the overlapping portions of the left swing frame and the right swing frame are respectively provided with a left slide groove and a right slide groove for the upper eccentric shaft and the connecting shaft to cooperate.

[0013] Finally, the present application provides a reciprocating shaver, which includes a shaver body, in which a motor, a battery, and a double-layer eccentric wheel structure are installed; the characteristic of the double-layer eccentric wheel structure is that the double-layer eccentric wheel structure adopts any one of the above-mentioned double-layer eccentric wheel structures.

[0014] Compared with the prior art, the advantages of the utility model are: the connection hole at the bottom is concentric with the outer circular hole of the lower wheel disc, which makes the manufacturing simple and the precision guaranteed; the diameter of the upper eccentric shaft is similar to that of the connection shaft, which makes the operation more stable, the inertia is small and the noise is low; the upper wheel disc and the lower wheel disc are coaxial with the motor shaft, which makes the operation more stable, the vibration is small, and the motor has a longer service life. The utility model has a simpler and more reasonable structure, convenient processing, low cost, and stable operation, easy and smooth shaving, and effectively reduces noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 It is a front structural schematic diagram of the embodiment of the utility model after being assembled with the swing assembly;

[0017] Figure 3 It is a schematic diagram of the back structure of the embodiment of the utility model after being assembled with the swing assembly;

[0018] Figure 4 for Figure 2 Exploded diagram of

[0019] Figure 5 This is a structural appearance diagram of a shaver equipped with an embodiment of the utility model;

[0020] Figure 6 for Figure 5 Schematic diagram of the structure of the razor after it is removed from the shell. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, a reciprocating shaver comprises a shaver body A, in which a motor 2, a battery 10, a double-layer eccentric wheel structure and other main components are installed, and a cutter head assembly 1 is provided at the upper end of the shaver body A. The double-layer eccentric wheel structure comprises a double-layer eccentric wheel 8 and swing frames 3 and 4, and the double-layer eccentric wheel 8 comprises an upper wheel disc 81 and a lower wheel disc 82, which are coaxially arranged with the motor shaft, an upper eccentric shaft 83 is installed at the upper end of the upper wheel disc 81, and a connecting hole 85 connected to the motor shaft is recessed at the bottom center of the lower wheel disc 82, and the upper wheel disc 81 and the lower wheel disc 82 are fixedly connected by a connecting shaft 84, and the connecting shaft 84 is arranged on a side away from the upper eccentric shaft 83.

[0023] The upper wheel disc 81 and the lower wheel disc 82 are both circular disc structures with bidirectional cutting edges, and the width of the upper wheel disc 81 is smaller than that of the lower wheel disc 82, and the thickness of the upper wheel disc 81 is smaller than that of the lower wheel disc 82. The connecting hole 85 is concentric with the outer circular hole of the lower wheel disc 82, which makes the manufacturing simple and the precision guaranteed; the diameter of the upper eccentric shaft 83 is similar to the diameter of the connecting shaft 84, which makes the operation more stable and the inertia small; the upper eccentric shaft 83, the connecting shaft 84 and the motor shaft are on the same plane. A shaft sleeve 9 is provided below the lower wheel disc 82, and a bearing is provided inside the shaft sleeve 9. The motor shaft passes through the bearing and is transmission-connected to the connecting hole 85 of the lower wheel disc 82, and the upper eccentric shaft 83 is connected to the swing frame 3.

[0024] The swing frames 3 and 4 are two on the left and right. The left swing frame 3 and the right swing frame 4 are installed in the swing frame bracket 5 and the transmission structure with two drivers 6. The left swing frame 3 is provided with a left slide 32 for inserting the upper eccentric shaft 83 in the middle of the lower end of the left swing frame 3. The left swing frame 3 and the right swing frame 4 are connected by a movable plug-in fit. This movable plug-in fit connection is that there is an overlapped portion between the left swing frame 3 and the right swing frame 4, wherein an inverted U-shaped arched portion is formed above the overlapped portion 41 of the right swing frame 4 for the upper wheel 81 to move; correspondingly, the overlapped portions of the left swing frame 3 and the right swing frame 4 are both provided with a left slide 32 and a right slide 42 for the upper eccentric shaft 83 and the connecting shaft 84 to fit, so that when the double-layer eccentric wheel 8 rotates, the left swing frame 3 and the right swing frame 4 can be driven to reciprocate. The upper ends of the two drivers 6 are provided with convex shafts, and the drivers 6 are connected to the tool holder of the cutter head assembly through the convex shafts and drive the blade to reciprocate. In addition, a gasket 7 is provided at the middle opening position of the swing frame bracket 5 , and the gasket 7 is fixed by a pressing sheet 70 .

[0025] When working, when the motor 2 rotates, it drives the double-layer eccentric wheel 8 to rotate, and then drives the left swing frame 3 and the right swing frame 4 to move back and forth, and at the same time drives the knife holder and the blade to move back and forth at high speed through the driver 6 to shave. Since the connecting hole of the utility model is concentric with the outer circular hole of the lower wheel disc, the manufacturing is simple and the precision is guaranteed; the diameter of the upper eccentric shaft and the connecting shaft are similar, which makes the operation more stable, the inertia is small and the noise is low; the upper wheel disc and the lower wheel disc are coaxial with the motor shaft, which makes the operation more stable, the vibration is small, and the motor service life is longer.

[0026] 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 principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A double-layer eccentric wheel structure of a shaver, comprising an upper wheel disc and a lower wheel disc, characterized in that: The upper wheel disc and the lower wheel disc are coaxially arranged with the motor shaft. The upper end of the upper wheel disc is installed with an upper eccentric shaft. The bottom center position of the lower wheel disc is recessed with a connecting hole connected to the motor shaft. The upper wheel disc and the lower wheel disc are fixedly connected by a connecting shaft, and the connecting shaft is arranged on a side away from the upper eccentric shaft.

2. The double-layer eccentric wheel structure according to claim 1 is characterized in that: The upper wheel disc and the lower wheel disc are both circular disc structures with bidirectional cutting edges, and the width of the upper wheel disc is smaller than that of the lower wheel disc, and the thickness of the upper wheel disc is smaller than that of the lower wheel disc.

3. The double-layer eccentric wheel structure according to claim 2 is characterized in that: The connecting hole is concentric with the outer circular hole of the lower wheel disc, and the diameter of the upper eccentric shaft is less than or equal to the diameter of the connecting shaft.

4. The double-layer eccentric wheel structure according to claim 3 is characterized in that: The upper eccentric shaft, the connecting shaft and the motor shaft are on the same plane.

5. The double-layer eccentric wheel structure according to any one of claims 1 to 4, characterized in that: A shaft sleeve is arranged below the lower wheel disc, a bearing is arranged inside the shaft sleeve, the motor shaft passes through the bearing and is transmission-connected with the connecting hole of the lower wheel disc, and the upper eccentric shaft is connected with the swing frame.

6. The double-layer eccentric wheel structure according to claim 5, characterized in that: There are two swing frames on the left and right, which are installed in the swing frame bracket and the two driving sub-transmission structures. The middle part of the lower end of the left swing frame is provided with a left slide groove for inserting the upper eccentric shaft. The left swing frame is connected to the right swing frame by a movable plug-in fit.

7. The double-layer eccentric wheel structure according to claim 6, characterized in that: The movable plug-in connection is that there is an overlapping part between the left swing frame and the right swing frame, and an inverted U-shaped arched part is formed above the overlapping part of one of the swing frames for the upper wheel plate to move; correspondingly, the overlapping parts of the left swing frame and the right swing frame are respectively provided with a left slide groove and a right slide groove for the upper eccentric shaft and the connecting shaft to cooperate.

8. A reciprocating shaver, comprising a shaver body, in which a motor, a battery and a double-layer eccentric wheel structure are installed; characterized in that The double-layer eccentric wheel structure adopts the double-layer eccentric wheel structure described in any one of claims 1 to 7.

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