A shaft-guided left-right oscillating shaver transmission

Abstract

A shaft-guided left-right oscillating shaver transmission device includes an oscillating frame, a steel shaft, and shock-absorbing springs housed within a housing. The lower part of the oscillating frame has a guide hole for the steel shaft to pass through. A fixing frame for fixing the steel shaft is located inside the housing. Positioning slots for inserting the two ends of the steel shaft are formed on both sides of the upper end of the fixing frame. The lower part of the oscillating frame is housed within the housing, and its bottom is connected to a drive mechanism inside the shaver body via a transmission structure. The upper end of the oscillating frame extends out of the housing and is connected to the moving blade assembly, allowing it to oscillate left and right along the steel shaft. Two shock-absorbing springs are provided, one on each side, fitted onto the left and right ends of the steel shaft. One end of each spring abuts against the oscillating frame, and the other end abuts against the fixing frame for support. This invention features a simple and reasonable structure, stable and reliable operation, reduced space limitations for products, significantly improved adaptability, reduced production control difficulty in injection molding production lines, convenient assembly and processing, and lower production costs.

Description

Technical Field

[0001] This utility model belongs to the field of shaver technology, specifically relating to a shaft-guided left-right swinging shaver transmission device. Background Technology

[0002] As people's living standards continue to improve, various small household appliances have entered the lives of ordinary people. Electric shavers, as shaving tools, are particularly popular among men. Currently, electric shavers consist of a shaver head assembly and a body, and are mainly divided into rotary and reciprocating shavers. The shaver head assembly generally includes a fixed blade holder assembly, a transmission assembly, and a lower cover fixing assembly. When the main unit is turned on, it drives the transmission assembly and the foil mechanism located within the fixed blade holder assembly to rotate or reciprocate. When the moving blades in the foil assembly rotate at high speed or reciprocate, they cut the beard hairs that extend into the foil, thus achieving the purpose of shaving.

[0003] Existing reciprocating shavers typically employ a single, thin-bladed component to drive the shaver in a reciprocating motion for shaving. This thin-bladed component is usually injection-molded from plastic, with the blades arranged symmetrically and being very thin. Its lateral movement is achieved through the deformation of the blades during operation. This design has the following drawbacks in use:

[0004] First, existing technologies use an integral thin-sheet structure, which requires the sheet to have sufficient height so that it can move left and right smoothly by deforming itself. As a result, the thin-sheet components are generally quite large, making it very difficult to apply them to small products and thus not widely adopted.

[0005] Second, the thin sheet portion of this swing component is relatively tall and very thin, making injection molding difficult and requiring high process standards, resulting in higher production costs.

[0006] Third, the lifespan of the thin plate of this swinging component is difficult to reliably guarantee during high-intensity and long-term operation. The thin plate may break when swinging left and right for a long time, which will affect the product's service life.

[0007] IV. When the thin plate of this oscillating component is under load, if the load part of the cutter head is unstable, the thin plate of the oscillating component will twist, causing noise in the product and affecting its quality. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a shaft-guided left-right swinging shaver transmission device that is simple and reasonable in structure, easy to process, stable and reliable in operation, and low in cost, in light of the above-mentioned technical status.

[0009] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a shaft-guided left-right swinging shaver transmission device, wherein the shaver includes a shaver head and a body, wherein the shaver head includes a housing, a foil assembly and a moving blade assembly, characterized in that: it includes at least a swing frame and a fixed shaft disposed in the housing, the lower part of the swing frame is provided with a guide hole for the fixed shaft to pass through, a positioning slot for installing the fixed shaft is provided in the housing, the lower part of the swing frame is disposed in the housing, the bottom of the swing frame is connected to the drive mechanism in the body through a transmission structure, the upper end of the swing frame extends out of the housing and is connected to the moving blade assembly, and can swing left and right along the fixed shaft through the guide hole.

[0010] Furthermore, a fixed frame is provided inside the housing, with positioning slots arranged on the upper left and right sides of the fixed frame. There are also two shock-absorbing springs, one on the left and one on the right, respectively, arranged on the left and right sides of the swing frame. One end of the shock-absorbing spring abuts against the swing frame, and the other end abuts against the fixed frame for support.

[0011] As an improvement, the housing includes an upper shell and a lower shell that fit together. A fixing frame is disposed inside the lower shell. A central hole is provided in the middle of the fixing frame for the transmission structure to pass through. A swing frame is disposed above the central hole. A connecting hole is provided at the lower end of the swing frame for transmission connection with the transmission structure.

[0012] Furthermore, the fixed shaft is made of steel shaft, and the upper end face of the fixed frame and the left and right sides of the central hole are symmetrically provided with fixed blocks. The inner side of the fixed blocks is respectively provided with positioning slots for the two ends of the steel shaft to be inserted into. The two ends of the steel shaft are inserted into the positioning slots for positioning.

[0013] Furthermore, a pressure plate is provided on the upper end face of the upper shell, and a shallow groove for the pressure plate to be inserted is formed on the upper end face of the upper shell. A square hollow part is opened in the middle of the upper shell, and a corresponding hollow part is provided in the middle of the pressure plate. A dustproof pad is provided in the hollow part of the pressure plate.

[0014] Furthermore, the dustproof pad has an opening in the middle for the upper end of the swing frame to extend out, and the lower part of the outer wall of the swing frame and the upper end are provided with a groove that matches and seals the opening.

[0015] Furthermore, the connection structure between the upper end of the swing frame and the moving blade assembly is as follows: the moving blade assembly includes a blade and a blade holder, the lower end of the blade holder is provided with a protruding post, the upper end of the swing frame is formed into a four-claw buckle structure, the middle part of the four-claw buckle forms a cavity for the protruding post to be inserted, a spring is supported between the protruding post and the bottom of the cavity, and the outer wall of the protruding post is provided with a protrusion that cooperates with the slot of the four-claw buckle.

[0016] Furthermore, the lower shell has connecting posts at the four corners of its inner side, the upper shell has corresponding through holes at the four corners of its four sides, and the pressure plate has corresponding countersunk holes at the four corners of its four sides, which are then connected and fixed by screws.

[0017] Furthermore, the blade assembly includes a mesh sheet and a mesh sheet frame. The mesh sheet is installed on the mesh sheet frame, and the moving blade assembly is installed inside the mesh sheet frame. Buckles protrude from the left and right sides of the upper shell, and corresponding buckle grooves are provided on the inner side of the mesh sheet frame. The blade assembly is fixed to the shell by a buckle connection.

[0018] Furthermore, a circular sleeve is formed around the central hole on the lower end face of the fixed frame, and an opening for the circular sleeve to pass through is provided in the middle of the bottom surface of the lower shell. The transmission structure includes a first connector, a connecting shaft, a bearing, and a second connector. One end of the transmission structure is connected to the bottom connecting hole of the swing frame through the first connector, and the other end is connected to the drive mechanism inside the machine body through the second connector. The connecting shaft is installed in the circular sleeve through the bearing. The first connector is fixed at the upper end of the connecting shaft, and the second connector is fixed at the lower end of the connecting shaft.

[0019] Finally, the moving blade assembly consists of at least one set of moving blade assemblies, each set of moving blade assemblies being arranged within its respective blade net assembly and connected to its own swing frame.

[0020] Compared with existing technologies, the advantages of this invention are: eliminating the thin sheet structure on both sides of the swing frame, and using a steel shaft that cooperates with the guide hole of the swing frame, allowing the swing frame to reciprocate along the steel shaft. Simultaneously, springs are used for shock absorption, making the swing frame's operation more stable and reliable. This invention has the advantages of simple and reasonable structure, stable and reliable operation, and low noise. It also reduces space limitations for products, greatly improving adaptability, reducing the difficulty of production control in injection molding production lines, facilitating processing, and lowering production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0022] Figure 2 for Figure 1 A sectional view;

[0023] Figure 3 for Figure 1 Exploded view;

[0024] Figure 4 This is an exploded view from another angle of Embodiment 1 of this utility model;

[0025] Figure 5 This is a structural cross-sectional view of Embodiment 2 of the present invention;

[0026] Figure 6 This is an exploded view of the structure of Embodiment 3 of this utility model;

[0027] 1. Blade Net Assembly, 1a. Front Blade Net Assembly, 1b. Rear Blade Net Assembly; 2. Housing, 21. Upper Housing, 22. Lower Housing; 3. Fixing Frame, 31. Fixing Block, 32. Positioning Slot, 33. Center Hole, 34. Circular Sleeve; 4. Moving Blade Assembly, 4a. Front Moving Blade Assembly, 4b. Rear Moving Blade Assembly, 41. Blade, 42. Blade Holder; 5. Swing Frame, 5a. Front Swing Frame, 5b. Rear Swing Frame, 51. Four-Claw Buckle, 52. Groove; 6. Steel Shaft, 6a. Front Steel Shaft; 7. Shock Absorbing Spring; 8. Pressure Plate; 9. Dustproof Pad; 1 0. Buckle, 11. Mesh sheet, 12. Mesh sheet frame, 20. Transmission structure, 21. Upper shell, 22. Lower shell, 31. Fixing block, 32. Positioning slot, 33. Center hole, 41. Blade, 42. Blade holder, 81. Countersunk hole, 121. Buckle groove, 201. First connector, 202. Bearing, 203. Connecting shaft, 204. Second connector, 211. Through hole, 212. Hollowed-out part, 221. Connecting post, 421. Protruding post, 422. Protrusion, 50. Guide hole, 50a. Front guide hole, 50b. Rear guide hole. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] like Figures 1-4 As shown, a shaft-guided left-right swinging shaver transmission device is disclosed. The shaver includes a shaver head and a body. The shaver head includes a housing 2, a blade assembly 1, and a moving blade assembly 4. The left-right swinging shaver transmission device includes a swing frame 5, a steel shaft 6, and shock-absorbing springs 7 disposed within the housing 2. A guide hole 50 for the steel shaft 6 to pass through is laterally opened at the lower center of the swing frame 5. A fixing frame 3 for fixing the steel shaft 6 is provided within the housing 2. Positioning slots 32 for the two ends of the steel shaft 6 to be inserted are formed on the left and right sides of the upper end of the fixing frame 3. The lower part of the swing frame 5 is disposed within the housing 1. The bottom of the swing frame 5 is connected to the drive mechanism inside the body through a transmission structure 20. The upper end of the swing frame 5 extends out of the housing 2 and is connected to the moving blade assembly 4. It can swing back and forth along the steel shaft 6 through the guide hole 50. There are two shock-absorbing springs 7, one on the left and one on the right, respectively sleeved on the steel shaft 6 and arranged on the left and right sides of the swing frame. One end of the shock-absorbing spring 7 abuts against the swing frame 5, and the other end abuts against the fixing frame 3 for support.

[0031] The specific structure is as follows: The shell 2 includes an upper shell 21 and a lower shell 22 that fit together. A fixing frame 3 is installed inside the lower shell 22. A central hole 33 is provided in the middle of the fixing frame 3 for the transmission structure 20 to pass through. A swing frame 5 is installed above the central hole 33. A connecting hole is provided at the lower end of the swing frame 5 to drive the transmission structure 20. Fixing blocks 31 are symmetrically protruded on the upper end face of the fixing frame 3 and on the left and right sides of the central hole 33. The inner side of the fixing blocks 31 is recessed with positioning slots 32 for the two ends of the steel shaft 6 to be inserted. The two ends of the steel shaft 6 are inserted into the positioning slots 32 for positioning. A pressure plate 8 is provided on the upper end face of the upper shell 21. A shallow groove for the pressure plate 8 to be inserted is formed on the upper end face of the upper shell 21. A square hollow part 212 is provided in the middle of the upper shell 21. A corresponding hollow part is provided in the middle of the pressure plate 8. A dustproof pad 9 is provided in the hollow part of the pressure plate 8. The dustproof pad 9 has an opening in the middle for the upper end of the swing frame 5 to extend out. A groove 52, which seals the opening, is provided between the lower and upper parts of the outer wall of the swing frame 5. The connection structure between the upper end of the swing frame 5 and the moving blade assembly 4 is as follows: the moving blade assembly 4 includes a blade 41 and a blade holder 42. A protrusion 421 is provided at the lower end of the blade holder 42. The upper end of the swing frame 5 is formed into a four-claw buckle 51 structure. A cavity is formed in the middle of the four-claw buckle 51 for the protrusion 421 to be inserted. A spring supports the protrusion 421 between it and the bottom of the cavity. A protrusion 422, which mates with the slot of the four-claw buckle 51, is provided on the outer wall of the protrusion 421. Connecting posts 221 are provided at the four corners of the inner side of the lower shell 22. Corresponding through holes 211 are provided at the four corners of the upper shell 21. Corresponding countersunk holes 81 are provided at the four corners of the pressure plate 8. All are fixed by screws.

[0032] The blade assembly 1 includes a mesh sheet 11 and a mesh frame 12. The mesh sheet 11 is installed on the mesh frame 12, and the moving blade assembly 4 is installed inside the mesh frame 12. The upper shell 21 has buckles 10 protruding on the left and right sides, and the mesh frame 12 has corresponding buckle grooves 121 on the inner side. The blade assembly 1 is fixed to the shell 2 by buckling.

[0033] A circular sleeve 34 is formed around the central hole on the lower end face of the fixed frame 3. An opening for the circular sleeve 34 to pass through is provided in the middle of the bottom surface of the lower shell 22. The transmission structure 20 includes a first connector 201, a connecting shaft 203, a bearing 202, and a second connector 204. One end of the transmission structure 20 is connected to the bottom connecting hole of the swing frame 5 through the first connector 201, and the other end is connected to the drive mechanism inside the machine body through the second connector 204. The connecting shaft 203 is installed in the circular sleeve 34 through the bearing 202. The first connector 201 is fixed at the upper end of the connecting shaft 203, and the second connector 204 is fixed at the lower end of the connecting shaft 203. Since the pin on the first connector 201 is eccentrically set, the swing frame 5 can swing left and right by rotation.

[0034] Although only one set of moving blade components is shown in this embodiment, this application is not limited to one set of moving blade components. The first connector 201 on the connecting shaft 203 can be connected to multiple sets of moving blade components through a gear transmission group to realize the reciprocating swing of multiple sets of moving blades.

[0035] This utility model eliminates the thin sheet structure on both sides of the swing frame 5, and uses a metal steel shaft 6 to cooperate with the hole at the geometric center of the swing frame 5, and a spring 7 to absorb shock, so that the swing frame 5 is more stable and reliable during reciprocating operation, thus improving the quality of the product; at the same time, the overall swing frame 5 can be adapted to the product space, and its size can be adjusted as needed, with a high degree of compatibility with the product.

[0036] Example 2

[0037] like Figure 5 Unlike Embodiment 1, it omits the left and right shock-absorbing springs 7, but otherwise remains the same as Embodiment 1.

[0038] Example 3

[0039] like Figure 6 Unlike Embodiment 1, it employs two sets of moving blade assemblies, namely a front moving blade assembly 4a and a rear moving blade assembly 4b. Each set of moving blade assemblies is arranged within its respective front blade net assembly 1a and rear blade net assembly 1b, and is connected to its own front swing frame 5a and rear swing frame 5b. Because the two sets of moving blade assemblies are arranged in a front-to-back manner, the front side of the front swing frame 5a where the front moving blade assembly is installed and the rear side of the rear swing frame 5b where the rear moving blade assembly is installed are provided with their respective front guide holes 50a and rear guide holes (not shown in the figure), which cooperate with and guide the front steel shaft 6a and rear steel shaft (not shown in the figure) on the fixed frame 3, respectively. The connection of the transmission mechanism is the same as that of the traditional double-blade transmission mechanism, and the rest is the same as or similar to Embodiment 1.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A shaft-guided left-right oscillating shaver transmission device, the shaver comprising a shaver head and a body, wherein the shaver head comprises a housing, a foil assembly, and a moving blade assembly, characterized in that: It includes at least a swing frame and a fixed shaft set inside the housing. The lower part of the swing frame has a guide hole for the fixed shaft to pass through. The housing has a positioning slot for installing the fixed shaft. The lower part of the swing frame is set inside the housing. The bottom of the swing frame is connected to the drive mechanism inside the machine body through a transmission structure. The upper end of the swing frame extends out of the housing and is connected to the moving blade assembly. It can swing back and forth along the fixed shaft through the guide hole.

2. The left-right swinging shaver transmission device according to claim 1, characterized in that: The housing is equipped with a fixed frame, with positioning slots arranged on the upper left and right sides of the fixed frame. There are also two shock-absorbing springs, one on the left and one on the right, respectively, on the left and right sides of the swing frame. One end of the shock-absorbing spring abuts against the swing frame, and the other end abuts against the fixed frame for support.

3. The left-right swinging shaver transmission device according to claim 2, characterized in that: The housing includes an upper shell and a lower shell that fit together. A fixing frame is disposed inside the lower shell. A central hole is provided in the middle of the fixing frame for the transmission structure to pass through. A swing frame is disposed above the central hole. A connecting hole is provided at the lower end of the swing frame for transmission connection with the transmission structure.

4. The left-right swinging shaver transmission device according to claim 3, characterized in that: The fixed shaft is made of steel shaft. The upper end face of the fixed frame and the left and right sides of the center hole are symmetrically provided with fixed blocks. The inner side of the fixed blocks is respectively provided with positioning slots for the two ends of the steel shaft to be inserted. The two ends of the steel shaft are inserted into the positioning slots for positioning.

5. The left-right swinging shaver transmission device according to claim 4, characterized in that: The upper end face of the upper shell is provided with a pressure plate, and the upper end face of the upper shell is formed with a shallow groove for the pressure plate to be inserted. A hollow part is opened in the middle of the upper shell, and a corresponding hollow part is provided in the middle of the pressure plate. A dustproof pad is provided in the hollow part of the pressure plate.

6. The left-right swinging shaver transmission device according to claim 5, characterized in that: The dustproof pad has an opening in the middle for the upper end of the swing frame to extend out, and the lower part of the outer wall of the swing frame is provided with a groove that matches and seals the opening.

7. The left-right swinging shaver transmission device according to claim 1, characterized in that: The connection structure between the upper end of the swing frame and the moving blade assembly is as follows: the moving blade assembly includes a blade and a blade holder. The lower end of the blade holder is provided with a protruding post. The upper end of the swing frame is formed into a four-claw buckle structure. The middle part of the four-claw buckle forms a cavity for the protruding post to be inserted. A spring is supported between the protruding post and the bottom of the cavity. The outer wall of the protruding post is provided with a protrusion that cooperates with the slot of the four-claw buckle.

8. The left-right oscillating shaver transmission device according to claim 5 or 6, characterized in that: The lower shell has connecting posts at the four corners of its inner side, the upper shell has corresponding through holes at the four corners of its four sides, and the pressure plate has corresponding countersunk holes at the four corners of its four sides. They are connected and fixed by screws.

9. The left-right swinging shaver transmission device according to any one of claims 3 to 7, characterized in that: The blade assembly includes a mesh sheet and a mesh sheet frame. The mesh sheet is installed on the mesh sheet frame, and the moving blade assembly is installed inside the mesh sheet frame. Buckles protrude on the left and right sides of the upper shell, and corresponding buckle grooves are provided on the inner side of the mesh sheet frame. The blade assembly is fixed to the shell by a buckle connection.

10. The left-right swinging shaver transmission device according to any one of claims 3 to 6, characterized in that: The lower end face of the fixed frame is formed with a circular sleeve around the central hole. The bottom surface of the lower shell has an opening in the middle for the circular sleeve to pass through. The transmission structure includes a first connector, a connecting shaft, a bearing, and a second connector. One end of the transmission structure is connected to the bottom connecting hole of the swing frame through the first connector, and the other end is connected to the drive mechanism inside the machine body through the second connector. The connecting shaft is installed in the circular sleeve through the bearing. The first connector is fixed at the upper end of the connecting shaft, and the second connector is fixed at the lower end of the connecting shaft. The moving blade assembly is at least one set of moving blade assemblies, each set of moving blade assemblies is arranged in its own blade net assembly and connected to its own swing frame.

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