A double-head shaver

Abstract

A double-head shaver comprises an upper head, a lower head and a main body, the main body comprises coaxially arranged upper head seat, outer shell, main frame body and lower head seat, the outer shell is sleeved on the outer periphery of the main frame body; one end of the upper head seat is detachably connected with the upper head, and the other end is connected with the upper end of the main frame body; one end of the lower head seat is detachably connected with the lower head, and the other end is connected with the lower end of the main frame body. By fixing the upper head seat and the lower head seat to the main frame body respectively, the fitting requirement of single operation of the assembly link is simplified, and the assembly efficiency is effectively improved; the setting of the upper and lower positioning pieces ensures the stability of the installation of the upper and lower driving members, and prolongs the service life of the product.

Description

Technical Field

[0001] This utility model patent relates to the field of beauty equipment technology, and in particular to a double-headed shaver. Background Technology

[0002] Existing dual-head shavers improve upon the limitations of traditional shaving and hair-shaving devices by using different blades at each end, which restricts their application scenarios and functionality. However, these products often have a compact internal structure, making assembly difficult. For example, a dual-head hair-shaving device disclosed in CN 220783995U uses positioning components on the front and rear shells to ensure the stability of the drive unit installation. During assembly, it is necessary to simultaneously consider the snap-fit ​​between the front and rear shells and the snap-fit ​​between each shell and the rear cover, increasing the assembly difficulty and affecting the yield rate. Utility Model Content

[0003] The purpose of this utility model is to solve the existing technical problems by proposing a double-headed razor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a double-headed shaver, comprising an upper blade head, a lower blade head, and a main body. The main body includes an upper blade holder, a shell, a main frame, and a lower blade holder arranged coaxially. The shell is fitted around the outer periphery of the main frame. One end of the upper blade holder is detachably connected to the upper blade head, and the other end is connected to the upper end of the main frame. One end of the lower blade holder is detachably connected to the lower blade head, and the other end is connected to the lower end of the main frame.

[0005] Preferably, the outer side wall of the main frame is provided with a main positioning strip, and the inner wall of the outer shell is provided with a positioning groove that fits into the main positioning strip, so that the main frame and the outer shell abut against each other circumferentially.

[0006] Preferably, the outer side wall of the main frame is also provided with a buckle, the upper tool holder has an upper positioning hole that engages with the buckle, and the lower tool holder has a lower positioning hole that engages with the buckle.

[0007] Preferably, the main frame has an upper driving member for driving the upper cutter head and a lower driving member for driving the lower cutter head fixed at both ends. The upper tool holder extends downward to form an upper positioning shell sleeved between the main frame and the outer shell. The inner wall of the upper positioning shell is connected to a plurality of upper positioning plates facing the upper driving member, and the upper positioning plates are clearance-fitted with the upper driving member. The lower tool holder extends upward to form a lower positioning shell sleeved between the main frame and the outer shell. The inner wall of the lower positioning shell is connected to a plurality of lower positioning plates facing the lower driving member, and the lower positioning plates are clearance-fitted with the lower driving member.

[0008] Preferably, the inner walls at the upper and lower ends of the outer shell are respectively provided with an upper step and a lower step, the top of the upper positioning shell is provided with an upper protruding ring that abuts against the upper step, and the outer wall of the upper positioning shell is provided with an upper positioning strip that fits with the inner wall of the outer shell with a clearance; the bottom of the lower positioning shell is provided with a lower protruding ring that abuts against the lower step, and the outer wall of the lower positioning shell is provided with a lower positioning strip that fits with the inner wall of the outer shell with a clearance.

[0009] Preferably, both the upper and lower tool holders are provided with a screwing groove on their outer periphery, the bottom wall of the screwing groove is provided with a protrusion, and both the upper and lower tool heads are provided with a locking block that engages with the protrusion.

[0010] Preferably, the outer corners of the card blocks are all rounded, and the card blocks are hollow ring-shaped card blocks or frame-shaped card blocks.

[0011] The beneficial effects of this utility model are: by fixing the upper and lower tool holders to the main frame respectively, the matching requirements of a single operation in the assembly process are simplified, effectively improving assembly efficiency; the setting of upper and lower positioning plates ensures the stability of the installation of upper and lower driving components and extends the service life of the product. Attached Figure Description

[0012] Figure 1 This is an assembly effect diagram of the present invention;

[0013] Figure 2 This is an exploded view of part of the main structure of the present utility model (the upper and lower drive components and the control motherboard have been omitted);

[0014] Figure 3 This is a schematic diagram of the structure of the outer shell of this utility model;

[0015] Figure 4 This is an assembly diagram of some structures of this utility model;

[0016] Figure 5 This is a schematic diagram showing the cooperation between the upper positioning plate and the upper driving component of this utility model;

[0017] Figure 6 This is a schematic diagram of the upper cutter head of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In conjunction with the embodiments and appendices Figure 1-6 A dual-head shaver includes an upper blade head 2, a lower blade head 3, and a main body 1. The main body 1 includes an upper blade holder 11, a housing 13, a main frame 14, and a lower blade holder 12, which are coaxially arranged. The housing 13 is fitted around the outer periphery of the main frame 14. One end of the upper blade holder 11 is detachably connected to the upper blade head 2, and the other end is connected to the upper end of the main frame 14. One end of the lower blade holder 12 is detachably connected to the lower blade head 3, and the other end is connected to the lower end of the main frame 14. Both the upper and lower blade holders are sleeves without caps at one end.

[0020] A dual-head shaver has an upper drive unit 41 for driving the upper blade head 2 and a lower drive unit for driving the lower blade head 3 fixed at both ends of the main frame 14. The main frame 14 is also fixed with a control board, a power supply and a main control button. The upper drive unit, the lower drive unit, the power supply and the main control button are all electrically connected to the control board. The upper and lower drive units can be rotary motors. The rotation shaft of the rotary motor is coaxial with the upper and lower blade heads. The output ends of the upper and lower drive units are exposed on the upper and lower end faces of the main body through the end face mounting holes of the upper and lower blade holders, respectively.

[0021] A double-headed shaver has a main positioning strip 141 on the outer side wall of the main frame 14, and there are two main positioning strips 141. The inner wall of the outer shell 13 has a positioning groove 131 that fits into the main positioning strip 141, so that the main frame 14 and the outer shell 13 abut against each other in the circumferential direction.

[0022] Furthermore, the positioning groove 131 is formed by two protruding strips located on the inner wall of the outer shell, so that a radial gap is left between the main frame and the outer shell outside the insertion and mating point.

[0023] A double-headed shaver has upper and lower blade holders (11, 12) respectively snapped onto both ends of a main frame 14 to achieve circumferential and axial fixation of the upper and lower blade holders relative to the main frame. The outer wall of the main frame 14 is also provided with a buckle 142. The upper blade holder 11 has an upper positioning hole 113 that engages with the buckle 142, and the lower blade holder 12 has a lower positioning hole 123 that engages with the buckle 142. Buckles 142 are provided above and below the main positioning strip 141, and the outer circumferential surface of the buckle 142 does not exceed the outer circumferential surface of the main positioning strip 141.

[0024] A dual-headed shaver has an upper mounting groove 1401 that fits into and matches an upper drive member 41 and a lower mounting groove that fits into and matches a lower drive member at its upper and lower ends, respectively. Both the upper and lower mounting grooves have circumferential openings 140, and the central angle corresponding to the circumferential openings 140 is not less than 120°, so that after the upper and lower drive members are fitted and fixed, there are exposed circumferential surfaces located on the same side or opposite sides. The upper tool holder 11 extends downward to form an upper positioning shell 112 sleeved between the main frame 14 and the outer shell 13. The inner wall of the upper positioning shell 112 is connected to a plurality of upper positioning pieces 1121 facing the upper drive member 41. The upper positioning pieces 1121 are clearance-fitted with the upper drive member 41, so that the upper positioning pieces 1121 and the upper drive member 41 move radially against each other. The lower tool holder 12 extends upward to form a lower positioning shell 122 sleeved between the main frame 13 and the outer shell 13. The inner wall of the lower positioning shell 122 is connected to a plurality of lower positioning pieces facing the lower drive member. The lower positioning pieces are clearance-fitted with the lower drive member, so that the lower positioning pieces and the lower drive member move radially against each other.

[0025] Furthermore, the upper positioning piece 1121 is located opposite the upper positioning shell 112 and the circumferential opening 140, with a first circumferential gap between adjacent upper positioning pieces; the lower positioning piece is located opposite the lower positioning shell and the circumferential opening, with a second circumferential gap between adjacent lower positioning pieces. The upper and lower positioning pieces maintain the radial stability of the upper and lower driving components while providing heat dissipation space. There are two or more upper positioning pieces, and two or more lower positioning pieces.

[0026] Furthermore, both the upper and lower positioning plates are arranged along the axial direction of the main frame, and the length of the upper positioning plate is not less than half the length of the upper driving component, and the length of the lower positioning plate is not less than half the length of the lower driving component.

[0027] A double-headed shaver has an upper step 132 and a lower step on the inner walls of the upper and lower ends of the outer shell 13, respectively. The top of the upper positioning shell 112 has an upper protruding ring 1120 that abuts against the upper step 132, and the outer wall of the upper positioning shell 112 has an upper positioning strip 1122 that fits with the inner wall of the outer shell 13. The bottom of the lower positioning shell 122 has a lower protruding ring 1220 that abuts against the lower step, and the outer wall of the lower positioning shell has a lower positioning strip that fits with the inner wall of the outer shell.

[0028] Furthermore, the upper tool holder 11 is also provided with an upper ring seat 111 that abuts against the upper end face of the outer shell 13, and an upper sealing ring is installed between the upper ring seat 111 and the upper convex ring 1120; the lower tool holder 12 is also provided with a lower ring seat 121 that abuts against the lower end face of the outer shell 13, and a lower sealing ring is installed between the lower ring seat 121 and the lower convex ring. Both the upper and lower sealing rings are squeezed and fitted with the outer shell to achieve the waterproof function at the connection between the upper and lower tool holders and the outer shell.

[0029] A double-headed shaver has a twisting groove 5 on the outer periphery of both the upper blade holder 11 and the lower blade holder 12. The bottom wall of the twisting groove 5 has a protrusion, and both the upper blade head 2 and the lower blade head 3 have a locking block 52 that engages with the protrusion.

[0030] Furthermore, the outer corners of the card block 52 are all rounded, and the card block 52 is a hollow ring-shaped card block or a frame-shaped card block.

[0031] During assembly, align the mounting holes on the end faces of the upper / lower tool holders with the output ends of the upper / lower drive components. Insert one end of the main frame into the upper / lower tool holder, and secure it circumferentially and axially to the main frame by engaging the snap-fit ​​mechanism with the upper / lower positioning holes. Then, through the engagement of the positioning groove and the main positioning strip, insert the other end of the main frame into the outer shell. The upper / lower tool holder is then installed onto the outer shell by the compression engagement between the outer shell and the upper / lower sealing rings. Finally, axially insert the lower / upper tool holder into the remaining end of the outer shell, confirming that the lower / upper positioning holes engage with the snap-fit ​​mechanism and that the lower / upper sealing rings compress against the outer shell. This completes the main body installation.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-headed shaver, comprising an upper head, a lower head, and a main body, characterized in that, The main body includes an upper tool holder, a housing, a main frame, and a lower tool holder arranged coaxially. The housing is fitted around the outer periphery of the main frame. One end of the upper tool holder is detachably connected to the upper tool head, and the other end is connected to the upper end of the main frame. One end of the lower tool holder is detachably connected to the lower tool head, and the other end is connected to the lower end of the main frame.

2. A double-headed razor according to claim 1, characterized in that: The outer side wall of the main frame is provided with a main positioning strip, and the inner wall of the outer shell is provided with a positioning groove that fits into the main positioning strip, so that the main frame and the outer shell abut against each other circumferentially.

3. A double-headed razor according to claim 2, characterized in that: The outer side wall of the main frame is also equipped with a buckle. The upper tool holder has an upper positioning hole that engages with the buckle, and the lower tool holder has a lower positioning hole that engages with the buckle.

4. A double-headed razor according to claim 1, characterized in that: The main frame has an upper drive unit for driving the upper cutter head and a lower drive unit for driving the lower cutter head fixed at both ends. The upper tool holder extends downward to form an upper positioning shell sleeved between the main frame and the outer shell. The inner wall of the upper positioning shell is connected to several upper positioning plates facing the upper drive unit, and the upper positioning plates are clearance-fitted with the upper drive unit. The lower tool holder extends upward to form a lower positioning shell sleeved between the main frame and the outer shell. The inner wall of the lower positioning shell is connected to several lower positioning plates facing the lower drive unit, and the lower positioning plates are clearance-fitted with the lower drive unit.

5. A double-headed razor according to claim 4, characterized in that: The inner walls at the upper and lower ends of the outer shell are respectively provided with an upper step and a lower step. The top of the upper positioning shell is provided with an upper protruding ring that abuts against the upper step, and the outer wall of the upper positioning shell is provided with an upper positioning strip that fits with the inner wall of the outer shell with a clearance. The bottom of the lower positioning shell is provided with a lower protruding ring that abuts against the lower step, and the outer wall of the lower positioning shell is provided with a lower positioning strip that fits with the inner wall of the outer shell with a clearance.

6. A double-headed razor according to claim 1, characterized in that: Both the upper and lower tool holders are provided with a screwing groove on their outer periphery. The bottom wall of the screwing groove is provided with a protrusion. Both the upper and lower tool heads are provided with a locking block that engages with the protrusion.

7. A double-headed razor according to claim 6, characterized in that: All outer corners of the card blocks are rounded, and the card blocks are hollow ring-shaped or frame-shaped.

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