Reciprocating shaver

Abstract

This invention discloses a reciprocating shaver, in which a drive motor drives an eccentric shaft, which in turn drives a blade holder via a drive intermediate swinging component. The intermediate swinging component includes an eccentric bushing, and the eccentric shaft enters the lower receiving groove of the eccentric bushing. The eccentric bushing is equipped with a guide mechanism, and the upper end of the eccentric bushing has a lever that drives the reciprocating blade holder. The actuation joint between the eccentric shaft and the eccentric bushing is fluid-sealed within a lubrication cavity, and the upper part of the eccentric bushing or the lever passes through a soft seal at the top of the lubrication cavity. The eccentric shaft of this shaver rotates 360 degrees within the lower receiving groove of the eccentric bushing. Multiple friction points are located within the lubrication cavity, ensuring timely replenishment of lubricating fluid at these friction points, thus providing sufficient lubrication and sound insulation, increasing smoothness, and reducing wear and noise. Furthermore, the lever of the eccentric bushing and the upper receiving groove of the reciprocating blade holder can be tightly fitted to achieve directional left-right swinging, reducing wear and improving transmission smoothness and responsiveness.

Description

Technical Field

[0001] This invention relates to a reciprocating shaver, mainly to reciprocating hair clippers and reciprocating razors, especially reciprocating hair clippers. Background Technology

[0002] A hair clipper, with announcement number CN212096438U, includes a handle and a blade assembly. The handle houses a drive motor. The blade assembly is detachably connected to the front end of the handle. The blade assembly includes a stationary blade, a movable blade, and a swing head. A connecting rod is fixed to the stationary blade, and the connecting rod is magnetically connected to the front end of the handle. The movable blade is positioned between the stationary blade and the swing head, and is kinetically connected to the swing head. A spring is provided on the stationary blade to press down on the movable blade and the swing head. The output shaft of the drive motor is kinetically connected to the swing head, and the drive motor drives the swing head to swing left and right relative to the stationary blade. This invention has the advantages of simple structure, convenient assembly and disassembly, and easy cleaning.

[0003] However, the eccentric shaft of the aforementioned traditional hair clippers directly enters the eccentric receiving groove in the blade assembly. Because the eccentric shaft rotates at high speed in this groove, high-intensity friction occurs. The traditional method for lubrication is to apply grease to the open eccentric receiving groove. Due to its open structure, the grease evaporates and dries out easily, and it is usually consumed quickly. Moreover, the lubrication effect of grease is far inferior to that of lubricating fluid (such as automotive lubricating oil), and there is no timely flow of lubricating fluid to replenish it and achieve the desired lubrication effect. This results in traditional hair clippers being noisy, experiencing severe transmission wear, and thus having a poor service life and user experience. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a reciprocating shaver that achieves sealing and lubrication of high-intensity transmission friction points by adding an intermediate transmission body.

[0005] Therefore, the present invention is implemented using the following technical solution: A reciprocating shaver includes a housing with a shaving head at its upper end. A drive motor is disposed within the housing, driving an eccentric shaft. The eccentric shaft drives a reciprocating blade holder via a drive intermediate oscillating component. The intermediate oscillating component includes an eccentric sleeve. The eccentric shaft enters a lower receiving groove in the eccentric sleeve, which provides space for eccentric rotation of the eccentric shaft. Within this space, the eccentric shaft can move the eccentric sleeve left and right while preventing it from moving back and forth. The eccentric bushing is equipped with a guide mechanism to guide its reciprocating motion. The upper end of the eccentric bushing is equipped with a lever, which drives the reciprocating tool holder. The actuation joint between the eccentric shaft and the eccentric bushing is enclosed in a lubrication cavity by a liquid seal. The lubrication cavity is equipped with an injection port and a sealing mechanism. Lubricating fluid is added to the lubrication cavity to lubricate the actuation joint. The upper part of the eccentric bushing or the lever passes through a soft seal in the upper part of the lubrication cavity and through the liquid seal. The soft seal deforms with the swing of the eccentric bushing or the lever.

[0006] Preferably, the guide mechanism is enclosed within the lubrication cavity.

[0007] Preferably, the lubrication cavity is formed by the inner lubrication shell, and the guiding mechanism is a guide rod disposed on both sides of the eccentric bushing. The guide rod passes through the guide hole on the guide frame fixed inside the inner lubrication shell.

[0008] Preferably, the actuating joint between the eccentric shaft and the eccentric bushing is immersed in lubricating fluid.

[0009] Preferably, the upper end of the actuating lever passes through a soft seal, the lubrication inner shell includes an oil seal at its lower end, and the output shaft of the drive motor passes through the oil seal into the lubrication cavity and drives the eccentric shaft.

[0010] Preferably, the lubricating inner shell includes a lower inner shell and an upper cover, the soft seal is fixed in the middle of the upper cover, and the lower inner shell is installed in a sealing fit with the upper cover.

[0011] Preferably, the lower inner shell includes a first lower inner shell and a second lower inner shell. The first lower inner shell and the second lower inner shell are fixedly installed and their mating joints are liquid-sealed. The upper cover is installed and fitted with the second lower inner shell. The upper end of the first lower inner shell has a support plate. The support plate has a central hole through which the eccentric bushing passes. The guide rods are respectively supported in guide grooves on the support plate. A positioning ring is fixed in the guide groove to restrict the guide rods. The positioning ring has a limiting mechanism to prevent the guide rods from rotating relative to it.

[0012] Preferably, the top cover includes a fixing part on the outer edge, and the soft sealing element is disposed at the center of the top cover. The fixing part is fixedly installed with the housing component of the lubrication cavity. The soft sealing element includes an integrally formed inner sleeve, a connecting part, and an outer edge. An upward-facing upper annular groove is formed between the inner sleeve and the outer edge. The outer edge includes an inner plate and an outer plate. The inner plate and the outer plate form a downward-facing lower annular V-groove. The outer plate is clamped and fixed by the fixing part and the housing component to form a liquid seal.

[0013] Preferably, the upper cover includes a fixing part on the outer edge, and the soft sealing element is disposed at the center of the upper cover. The fixing part is fixedly installed with the lower inner shell. The soft sealing element includes an integrally formed inner sleeve, a connecting part, and an outer edge. An upward-facing upper annular groove is formed between the inner sleeve and the outer edge. The outer edge includes an inner plate and an outer plate. The inner plate and the outer plate form a downward-facing lower annular V-groove. The outer plate is clamped and fixed by the fixing part and the lower inner shell to form a liquid seal.

[0014] Preferably, the actuating rod enters the upper receiving groove of the reciprocating tool holder, and the actuating rod is tightly engaged with the upper receiving groove.

[0015] The beneficial effects of adopting the above technical solution are as follows: The eccentric shaft of traditional hair clippers directly enters the eccentric receiving groove in the blade assembly. Because the eccentric shaft rotates at high speed in 360 degrees, high-intensity friction occurs. The traditional method for lubrication is to apply grease to the open eccentric receiving groove. However, the grease is usually consumed quickly, and the lubrication effect of grease is far inferior to that of lubricating fluid, such as automotive lubricating oil. This results in traditional hair clippers being noisy, having severe transmission wear, and thus having a poor service life and user experience. In this application, an intermediate swing component with an eccentric bushing is added. The eccentric shaft first enters the lower receiving groove of the eccentric bushing and rotates 360 degrees. The friction points of both are located within the lubrication cavity, which is filled with flowable lubricant, ensuring sufficient lubrication at the friction mating points. Then, the actuating rod of the eccentric bushing passes through the soft seal on the lubrication cavity to drive the reciprocating tool post. This structural change allows friction points that were originally difficult to directly seal and lubricate (i.e., those difficult to seal in the receiving groove of the reciprocating tool post) to be transformed into sealable locations. This sealing and isolation improves sound insulation, increases transmission smoothness, reduces wear, and lowers noise. Another side effect is that the actuating rod of the eccentric bushing and the upper receiving groove of the reciprocating tool post can be tightly fitted (the upper receiving groove does not need to leave sufficient space for eccentric rotation) to achieve left-right directional swinging. This shifts the main friction points to the intermediate swing component for sealed lubrication, reducing wear and improving transmission smoothness and responsiveness. Attached Figure Description

[0016] The present invention includes the following figures: Figure 1This is a three-dimensional structural diagram of the reciprocating shaver provided by the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the reciprocating shaver after removing the front housing.

[0018] Figure 3 for Figure 2 A schematic diagram of the reciprocating shaver after removing the inner shell.

[0019] Figure 4 for Figure 3 A schematic diagram of the reciprocating shaver after removing the inner shell.

[0020] Figure 5 for Figure 4 A three-dimensional structural diagram of the soft seal component.

[0021] Figure 6 for Figure 5 A three-dimensional structural diagram of the soft seal from another perspective.

[0022] Figure 7 for Figure 4 A schematic diagram of the structure of the intermediate swing component.

[0023] Figure 8 for Figure 1 A cross-sectional view of a reciprocating shaver.

[0024] Figure 9 This is a structural schematic diagram of the internal components of the reciprocating shaver provided by the present invention, viewed from the rear side. Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] Reference Figure 1-9 As shown, the present invention provides a reciprocating shaver, generally a reciprocating head hair clipper, including a housing 1. The upper end of the housing 1 has a shaving end. A drive motor 3 is disposed inside the housing 1. The drive motor 3 drives an eccentric shaft 4. The eccentric shaft 4 includes an eccentric component that is energized and connected to the output shaft of the drive motor 3. The eccentric shaft 4 drives a reciprocating blade holder 6 through a drive intermediate swing component 5. The intermediate swing component 5 includes an eccentric bushing 51. The eccentric shaft 4 enters a lower receiving groove 54 of the eccentric bushing 51. The lower receiving groove 54 has a space in which the eccentric shaft 4 can rotate eccentrically. The eccentric shaft 4 can move the eccentric bushing 51 left and right in the space and avoids moving the eccentric bushing 51 back and forth (as shown in the attached figure). Figure 4The left and right sides are shown in the figure (the front and back directions are perpendicular to the left and right directions on the paper). The eccentric bushing 51 is equipped with a guide mechanism to guide its left and right reciprocating motion. The upper end of the eccentric bushing 51 is equipped with a lever 52, which drives the reciprocating tool holder 6. The lever 52 drives the reciprocating tool holder 6. The joint between the eccentric shaft 4 and the eccentric bushing 51 is sealed in a lubrication cavity 7. The lubrication cavity 7 is equipped with an injection port and a sealing mechanism. The sealing mechanism is usually a plug. In this embodiment, a structure with no vent and an enlarged injection port is mainly used. A vent port can also be configured for smooth liquid addition. Lubricating fluid is added to the lubrication cavity 7 to lubricate the actuating joint. To increase lubrication, the actuating joint between the eccentric shaft 4 and the eccentric bushing 51 can be immersed in the lubricating fluid. Since the lubricating fluid flows in all directions in liquid form, it can replenish the lubricating fluid consumed by high-intensity friction parts in a timely manner. The lubricating fluid can be traditional lubricating oil. The guide mechanism is also wrapped in the lubrication cavity. The upper part of the eccentric bushing 51 or the actuating rod 52 passes through the soft seal 8 (usually an elastic corrugated rubber part) at the upper part of the lubrication cavity 7 and is sealed at the liquid level. The soft seal 8 deforms with the swing of the eccentric bushing 51 or the actuating rod 52. In this embodiment, the upper end of the actuating rod 52 passes through the soft seal 8, and the actuating rod 52 enters the upper receiving groove 61 of the reciprocating tool holder 6. The actuating rod 52 and the upper receiving groove 61 are tightly fitted. The lubricating inner shell 9 includes an oil seal 10 at the lower end. The output shaft of the drive motor 3 passes through the oil seal 10 and enters the lubrication cavity 7 and drives the eccentric shaft 4. In summary, in this embodiment, the intermediate swing member 5 and the guide mechanism are located in the lubrication cavity 7, and only the actuating rod 52 of the intermediate swing member 5 partially passes through the lubrication cavity 7 upward.

[0027] Reference Figure 2 , 3 As shown in Figures 4, 6, 8, and 9, the lubrication inner shell 9 encloses the lubrication cavity 7. The guiding mechanism consists of guide rods 53 located on both sides of the eccentric bushing 51, which pass through a guide frame fixed inside the lubrication inner shell 9. The lubrication inner shell 9 includes a lower inner shell and an upper cover 91. The soft seal 8 is fixed in the middle of the upper cover 91, and the lower inner shell and the upper cover 91 are sealed together. The lower inner shell includes a first lower inner shell 92 and a second lower inner shell 93. The first lower inner shell 92 and the second lower inner shell 93 are fixedly installed and their mating joints are liquid-sealed. The upper cover 91 is installed and fitted with the second lower inner shell 93. The upper end of the first lower inner shell 92 has a support plate 921. The support plate 921 has a central hole through which the eccentric bushing 51 passes. The guide rods 53 are respectively supported in the guide grooves 922 on the support plate 921. A positioning ring 94 is fixed at the guide groove 922 to restrict the guide rods 53. The guide grooves 922 and the positioning ring 94 constitute the guide frame. The positioning ring 94 has a limiting mechanism to prevent the guide rods 53 from rotating relative to it. The limiting mechanism is the planar mating part between the upper and lower inner sides of the positioning ring 94 and the guide rods 53. The above-mentioned guide structure ensures that the intermediate swing member 5 can swing left and right stably and accurately.

[0028] Reference Figure 3 , 4 As shown in Figures 5, 6, 8, and 9, to enable the soft seal 8 to flexibly deform with the swing of the lever, the upper cover 91 includes a fixing part on the outer edge, and the soft seal 8 is disposed at the center of the upper cover 91. The fixing part is fixedly installed with the lower inner shell 93. The soft seal 8 includes an integrally formed inner sleeve 81, a connecting part 82, and an outer edge part 83. An upward-facing upper annular groove 84 is formed between the inner sleeve 81 and the outer edge part 83. The outer edge part 83 includes an inner plate 831 and an outer plate 832. The inner plate 831 and the outer plate 832 form a downward-facing lower annular V-groove 85. The outer plate 832 is clamped and fixed by the fixing part and the lower inner shell 93 to form a liquid seal. The above structure reduces the deformation resistance of the soft seal and improves its durability.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. The above preferred embodiments of the present invention are not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A reciprocating shaver, comprising a housing, a shaving head at the upper end of the housing, and a drive motor disposed within the housing, the drive motor driving an eccentric shaft, characterized in that: The eccentric shaft drives a reciprocating tool holder via a driving intermediate swing member. The intermediate swing member includes an eccentric bushing. The eccentric shaft enters the lower receiving groove of the eccentric bushing, which has space for the eccentric shaft to rotate eccentrically. The eccentric shaft can move the eccentric bushing left and right in the space while preventing it from moving back and forth. The eccentric bushing is equipped with a guide mechanism to guide its left and right reciprocating motion. The upper end of the eccentric bushing has a lever that drives the reciprocating tool holder. The actuation joint between the eccentric shaft and the eccentric bushing is encased in a lubrication cavity with a liquid seal. The lubrication cavity has an injection port and a sealing mechanism. Lubricating fluid is added to the lubrication cavity to lubricate the actuation joint. The upper part of the eccentric bushing or lever passes through a soft seal at the upper part of the lubrication cavity and through the liquid seal. The soft seal deforms with the swing of the eccentric bushing or lever.

2. The reciprocating shaver according to claim 1, characterized in that: The guiding mechanism is enclosed within the lubrication cavity.

3. The reciprocating shaver according to claim 2, characterized in that: The lubrication cavity is formed by the inner lubrication shell, and the guiding mechanism is a guide rod disposed on both sides of the eccentric bushing. The guide rod passes through the guide hole on the guide frame fixed inside the inner lubrication shell.

4. The reciprocating shaver according to claim 1, 2, or 3, characterized in that: The actuating joint between the eccentric shaft and the eccentric bushing is immersed in lubricating fluid.

5. The reciprocating shaver according to claim 1, 2, or 3, characterized in that: The upper end of the actuating lever passes through a soft seal, the lubrication inner shell includes an oil seal at the lower end, and the output shaft of the drive motor passes through the oil seal into the lubrication cavity and drives the eccentric shaft.

6. The reciprocating shaver according to claim 3, characterized in that: The lubricating inner shell includes a lower inner shell and an upper cover. The soft sealing element is fixed in the middle of the upper cover, and the lower inner shell is installed in a sealing fit with the upper cover.

7. The reciprocating shaver according to claim 6, characterized in that: The lower inner shell includes a lower inner shell one and a lower inner shell two. The lower inner shell one and the lower inner shell two are fixedly installed and their mating joints are liquid-sealed. The upper cover is installed and fitted with the lower inner shell two. The upper end of the lower inner shell one has a support plate. The support plate has a central hole in the middle for the eccentric bushing to pass through. The guide rods are respectively supported in the guide grooves on the support plate. A positioning ring is fixed in the guide groove to restrict the guide rods.

8. The reciprocating shaver according to claim 1, 2, or 3, characterized in that: The top cover includes a fixing part on the outer edge, and the soft sealing element is disposed at the center of the top cover. The fixing part is fixedly installed with the housing component of the lubrication cavity. The soft sealing element includes an integrally formed inner sleeve, a connecting part, and an outer edge. An upward-facing upper annular groove is formed between the inner sleeve and the outer edge. The outer edge includes an inner plate and an outer plate. The inner plate and the outer plate form a downward-facing lower annular V-groove. The outer plate is clamped and fixed by the fixing part and the housing component to form a liquid seal.

9. The reciprocating shaver according to claim 7, characterized in that: The upper cover includes a fixing part on the outer edge, and the soft sealing element is disposed at the center of the upper cover. The fixing part is fixedly installed with the lower inner shell. The soft sealing element includes an integrally formed inner sleeve, a connecting part, and an outer edge. An upward-facing upper annular groove is formed between the inner sleeve and the outer edge. The outer edge includes an inner plate and an outer plate. The inner plate and the outer plate form a downward-facing lower annular V-groove. The outer plate is clamped and fixed by the fixing part and the lower inner shell to form a liquid seal.

10. The reciprocating shaver according to claim 1, 2, or 3, characterized in that: The actuating rod enters the upper receiving groove of the reciprocating tool holder, and the actuating rod is tightly engaged with the upper receiving groove.

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