Blade head with protective cover and trimmer

Abstract

This utility model discloses a blade head and trimmer with a protective cover, belonging to the technical field of trimmers. The blade head with a protective cover includes a fixed blade support, a movable blade support, a fixed blade, a movable blade, and a protective cover. The movable blade support is movably mounted on the fixed blade support, the fixed blade is fixedly mounted on the fixed blade support, and the movable blade is fixedly mounted on the movable blade support, allowing the movable blade to move relative to the fixed blade. The protective cover is mounted on the fixed blade support and located on the side of the movable blade furthest from the fixed blade, serving to isolate the movable blade. This utility model effectively prevents the movable blade from directly contacting the skin, avoiding hard scratches to the user's skin when pressure is applied at different angles. It solves the safety hazard of traditional trimmers easily causing skin abrasions and improves the user experience.

Description

Technical Field

[0001] This utility model relates to the field of trimmer technology, and in particular to a trimmer with a protective cover. Background Technology

[0002] In the field of personal care, hair trimmers are an important tool for daily grooming, and their safety has always been a key concern for users. As people's demands for the trimming experience continue to rise, they not only expect trimmers to work efficiently, but also hope to minimize damage to the skin during operation and achieve a comfortable and safe trimming effect.

[0003] Existing hair trimmer heads primarily rely on blade sharpness and head design to cut hair during the trimming process. However, in actual use, due to the complex contours of the human body, it is difficult to precisely control the contact angle and pressure between the blade and the skin when trimming complex areas such as behind the ears and the neck. This can easily lead to the blade scratching the skin. Furthermore, users often need to frequently adjust the grip angle to achieve precise trimming in these complex areas, which can easily cause scratches on the fingers and joints due to blind spots or improper force, affecting user safety and operating experience. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a blade head and trimmer with a protective cover, which can effectively reduce the stimulation and damage of the blade head to the user and improve the user experience.

[0005] According to a first aspect of the present invention, a cutter head with a protective cover includes a fixed cutter support; a movable cutter support movably disposed on the fixed cutter support; a fixed cutter fixedly disposed on the fixed cutter support; a movable cutter fixedly disposed on the movable cutter support, the movable cutter being movable relative to the fixed cutter; and a protective cover disposed on the fixed cutter support and located on the side of the movable cutter away from the fixed cutter, the protective cover being used to isolate the movable cutter.

[0006] It offers at least the following benefits: In standard trimming mode, the fixed blade, with its side away from the moving blade, smoothly advances against the user's skin surface, while the moving blade moves relative to the fixed blade, achieving precise hair trimming. Due to the complex contours of the human body, users often need to adjust the contact angle between the fixed blade and the trimming surface when targeting narrow areas such as behind the ears or the neck, or areas requiring fine trimming. In this case, the protective cover on the moving blade side always contacts the trimming surface before the moving blade, providing physical protection. Thus, regardless of how the user adjusts the trimming angle or applies pressure, the protective cover maintains a safe distance between the trimming surface and the moving blade, ensuring that the moving blade is always within a safe trimming range. This solves the problem of skin scratches caused by angle changes in traditional trimmers, improving the user experience in different trimming scenarios.

[0007] According to some embodiments of this utility model, the protective cover and the fixed blade support are detachably connected.

[0008] According to some embodiments of the present invention, the protective cover is detachably connected to the fixed blade support via a magnetic attraction structure. The magnetic attraction structure includes a first magnet disposed on the protective cover and a second magnet disposed on the fixed blade support. The first magnet and the second magnet attract each other with opposite polarities to achieve the assembly and disassembly of the protective cover and the fixed blade support.

[0009] According to some embodiments of the present invention, a limiting groove is provided in the fixed blade bracket, and an installation groove is provided in the limiting groove. The second magnet is embedded in the installation groove, and the first magnet is set on the protective cover by a fixed bracket. The fixed bracket is embedded in the limiting groove and is configured to space between the first magnet and the second magnet.

[0010] According to some embodiments of this utility model, a protective comb is provided at one end of the protective cover near the cutting end of the moving blade.

[0011] According to some embodiments of this utility model, a fixed blade tooth comb is provided at one end of the fixed blade near the cutting end of the moving blade, and the cutting end of the moving blade is confined within a safe cutting space formed by the fixed blade tooth comb and the protective tooth comb.

[0012] According to some embodiments of this utility model, the fixed blade comb and the protective comb are arranged aligned with each other, or in a completely staggered manner, or in a partially staggered manner.

[0013] According to some embodiments of this utility model, the protective comb is bent along its length toward the side where the moving blade is located, forming an arc-shaped structure that protrudes toward the moving blade.

[0014] A trimmer according to a second aspect of the present invention includes a main body and a blade head with a protective cover according to the first aspect of the present invention, wherein a fixed blade support is detachably connected to the main body.

[0015] It has at least the following beneficial effects: This trimmer has all the beneficial effects of the aforementioned blade, which will not be repeated here.

[0016] According to some embodiments of this utility model, the main body is provided with a motor and a drive shaft. The drive shaft is driven on the motor. The moving blade support is provided with a positioning groove. The moving blade support is connected to the main body by inserting the drive shaft into the positioning groove. The fixed blade support is provided with a first fastening part. The main body is provided with a second fastening part. The first fastening part is configured to engage and fix with the second fastening part to realize the loading and unloading of the fixed blade support and the main body.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the cutter head with a protective cover according to the first embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure for disassembling and assembling the protective cover;

[0021] Figure 3 for Figure 1 The diagram of the explosion;

[0022] Figure 4 This is a schematic diagram of the structure of the trimmer according to the second embodiment of the present invention;

[0023] Figure 5 for Figure 1 A schematic diagram of the disassembly and assembly of the middle cutter head;

[0024] Figure 6 for Figure 5 Cross-sectional view in the middle;

[0025] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0026] Figure label:

[0027] Fixed blade support 100, second magnet 110, mounting groove 120, limiting groove 130, first fastening part 140;

[0028] Moving tool support 200, torsion spring 210, positioning groove 220;

[0029] Fixed blade 300, fixed blade comb 310;

[0030] 400 cuttings;

[0031] Protective cover 500, first magnet 510, protective comb 520, fixing bracket 530;

[0032] The main body is 600, the motor is 610, the drive shaft is 620, and the second fastening part is 630. Detailed Implementation

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the description mentions "first" or "second," it is merely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] refer to Figures 1 to 7 This embodiment discloses a blade with a protective cover.

[0037] like Figures 1 to 7 As shown, the cutter head with a protective cover includes a fixed cutter support 100, a movable cutter support 200, a fixed cutter 300, a movable cutter 400, and a protective cover 500. The movable cutter support 200 is movably mounted on the fixed cutter support 100, the fixed cutter 300 is fixedly mounted on the fixed cutter support 100, and the movable cutter 400 is fixedly mounted on the movable cutter support 200. The movable cutter 400 can move relative to the fixed cutter 300. The protective cover 500 is mounted on the fixed cutter support (100) and located on the side of the movable cutter 400 away from the fixed cutter. The protective cover 500 is used to isolate the movable cutter 400.

[0038] like Figure 1 and Figure 7As shown, with the side of the fixed blade 300 furthest from the moving blade 400 as the inner side and the side of the protective cover 500 furthest from the moving blade 400 as the outer side, the protective cover 500, the moving blade 400, and the fixed blade 300 are arranged sequentially from the outside to the inside. The fixed blade support 100 serves as a basic support structure, used to fix the fixed blade 300 and provide an installation reference for the moving blade support 200. The moving blade support 200 is movably mounted on the fixed blade support 100 and reciprocates relative to the fixed blade support 100 via a slide rail, hinge, or elastic connection. The fixed blade 300 is fixedly mounted on the fixed blade support as a stable shearing reference surface, and the moving blade 400 is fixedly mounted on the moving blade support 200, and cooperates with the fixed blade 300 to form a shearing structure as the moving blade support 200 moves. The protective cover 500 is mounted on the fixed blade bracket and located outside the movable blade 400. The protective cover 500 can separate the movable blade 400 and the space on the side of the movable blade 400 away from the fixed blade 300 to prevent the movable blade 400 from directly contacting the part to be trimmed.

[0039] Therefore, in standard trimming mode, the inner plane of the fixed blade 300 smoothly advances against the user's skin surface, while the movable blade 400 moves relative to the fixed blade 300, achieving precise hair trimming. Due to the complex contours of the human body, when targeting narrow areas such as behind the ears or the neck, or areas requiring fine trimming, users often need to adjust the contact angle between the fixed blade 300 and the trimming surface. In this case, the protective cover 500 located on the side of the movable blade 400 always contacts the trimming surface before the movable blade 400, forming physical protection. Thus, no matter how the user adjusts the trimming angle or applies pressure, the protective cover 500 can maintain a safe distance between the trimming surface and the movable blade 400, ensuring that the movable blade 400 is always within a safe trimming range. This solves the problem of skin scratches caused by angle changes in traditional trimmers, greatly improving the user experience in different trimming scenarios.

[0040] In some specific embodiments of this utility model, the protective cover 500 is detachably connected to the fixed blade holder 100. Specifically, the protective cover 500 is detachably connected to the fixed blade holder 100 through detachable connection methods such as snap-fit ​​connection, threaded connection, and magnetic connection, allowing the protective cover 500 to be flexibly removed from or installed on the fixed blade holder 100. The detachable connection of the protective cover 500 not only facilitates users in cleaning hair residue inside the blade head, but also allows for individual replacement when the protective cover 500 is worn or damaged, avoiding the scrapping of the entire blade head, thus reducing usage costs and extending the service life of the blade head.

[0041] Furthermore, the detachable structure also provides users with different protection needs with the possibility of replacing different types of protective covers 500. Users can replace protective covers 500 of different shapes or functions according to their actual needs to meet personalized requirements, thereby improving the user experience.

[0042] In some specific embodiments of this utility model, the protective cover 500 is detachably connected to the fixed blade support 100 by a magnetic attraction structure. The magnetic attraction structure includes a first magnet 510 disposed on the protective cover 500 and a second magnet 110 disposed on the fixed blade support 100. The first magnet 510 and the second magnet 110 attract each other with polarity to achieve quick assembly and disassembly of the protective cover 500 and the fixed blade support 100.

[0043] like Figure 2 and Figure 3 As shown, the first magnet 510 is disposed on the protective cover 500 near one end of the fixed blade support 100, and the second magnet 110 is disposed on the fixed blade support 100 near one end of the protective cover 500. The first magnet 510 and the second magnet 110 are arranged in a polarity-attracting manner. Compared with traditional snap-fit ​​or threaded connection methods, the magnetic attraction structure does not require precise alignment or rotation operations; it can automatically attract and fix itself simply by being brought close together, greatly reducing the difficulty of replacing or cleaning the protective cover 500. In addition, this non-contact connection method can avoid the wear problems that may be caused by mechanical snap-fit, making the blade structure more durable.

[0044] In some specific embodiments of this utility model, the fixed blade support 100 is provided with a limiting groove 130, and an installation groove 120 is provided in the limiting groove 130. The second magnet 110 is embedded in the installation groove 120. The first magnet 510 is mounted on the protective cover 500 through a fixing bracket 530. The fixing bracket 530 is embedded in the limiting groove 130 and is configured to space between the first magnet 510 and the second magnet 110.

[0045] like Figure 2 and Figure 3 As shown, the fixed bracket 530 has a groove corresponding to the size of the first magnet 510. Two positioning protrusions are provided along the depth direction at the bottom of the groove. The first magnet 510 has two positioning holes corresponding to the positioning protrusions. When the first magnet 510 is embedded in the groove, the positioning protrusions are inserted into the corresponding positioning holes. Threaded holes are provided inside the positioning protrusions, and the protective cover 500 is connected to the fixed bracket 530 by bolts inserted into the threaded holes. A limiting groove 130 corresponding to the shape of the fixed bracket 530 is provided at the end of the fixed tool bracket 100 connected to the protective cover 500. A mounting groove 120 corresponding to the shape of the second magnet 110 is provided at the bottom of the limiting groove 130, and the second magnet 110 is embedded in the mounting groove 120. Therefore, the limiting groove 130 provides physical guidance for the installation of the protective cover 500, ensuring accurate resetting each time it is disassembled and assembled. The fixing bracket 530 maintains the optimal distance between the first magnet 510 and the second magnet 110, avoiding the problem of excessive magnetic force causing difficulty in disassembly and assembly or insufficient magnetic force affecting the fixing effect, thereby achieving precise positioning and stable connection of the magnetic structure.

[0046] In some specific embodiments of this utility model, such as Figure 2 As shown, a protective comb 520 is provided at one end of the protective cover 500 near the cutting end of the moving blade 400. In the standard trimming state, the fixed blade 300 is smoothly advanced in the trimming direction while lying flat against the skin surface to achieve effective hair cutting. At the same time, the protective comb 520 allows the hair to naturally stand upright as it enters the cutting area, avoiding hair bending caused by the pressure of the protective cover 500, thus making the trimming process more efficient and smooth.

[0047] In some specific embodiments of this utility model, a fixed blade tooth comb 310 is provided at one end of the fixed blade 300 near the cutting end of the movable blade 400, and the cutting end of the movable blade 400 is confined within a safe cutting space formed by the fixed blade tooth comb 310 and the protective tooth comb 520. Specifically, as shown... Figure 7 As shown, the cutting edge end face of the moving blade 400 is recessed relative to the end faces of the fixed blade comb 310 and the protective comb 520 to ensure that it will not exceed the safe cutting space under any trimming angle.

[0048] In some specific embodiments of this utility model, the fixed blade comb 310 and the protective comb 520 are arranged aligned with each other, or are arranged in a completely staggered manner, or are arranged in a partially staggered manner.

[0049] like Figure 2 As shown, the fixed-blade comb 310 has multiple fixed-blade comb teeth evenly distributed in the left-right direction, and the protective comb 520 has multiple protective comb teeth evenly distributed in the left-right direction. Figure 6 As shown, with the side of the fixed blade 300 furthest from the moving blade 400 as the inner side and the side of the protective cover 500 furthest from the moving blade 400 as the outer side, when the fixed blade comb 310 and the protective comb 520 are aligned, the central axis of the protective comb teeth coincides with the central axis of the corresponding fixed blade comb teeth; when the fixed blade comb 310 and the protective comb 520 are arranged in a completely staggered manner, the central axis of the protective comb teeth coincides with the central axis of the interval between two adjacent fixed blade comb teeth; when the fixed blade comb 310 and the protective comb 520 are arranged in a partially staggered manner, the central axis of the protective comb is located within the interval area between two adjacent fixed blade comb teeth, but does not coincide with the central axis of the interval. All three arrangement methods of the fixed blade comb 310 and the protective comb 520 can form an orderly hair processing channel, allowing the hair to be guided to the cutting position and ensuring the hair trimming effect.

[0050] In some specific embodiments of this utility model, the protective comb 520 is bent along its length toward the side where the moving blade 400 is located, forming an arc-shaped structure that protrudes toward the moving blade 400. For example... Figure 2As shown, the protective comb 520 extends in the left and right direction along its length. The protective comb 520 bends outward to form an inwardly convex arc structure. The guide surface formed by the arc convexity forms an optimal working distance with the moving blade 400, which not only prevents skin contact but also ensures that the hair effectively enters the cutting zone, effectively solving the problem of capturing short or flat hair.

[0051] refer to Figures 4 to 5 This embodiment discloses a trimmer, including a main body 600 and a blade head with a protective cover disposed on the main body 600, and a fixed blade bracket 100 is detachably connected to the main body 600.

[0052] In some specific embodiments of this utility model, the main body 600 is provided with a motor 610 and a drive shaft 620. The drive shaft 620 is driven on the motor 610. The moving blade support 200 is provided with a positioning groove 220. The moving blade support 200 is connected to the main body 600 by inserting the drive shaft 620 into the positioning groove 220. The fixed blade support 100 is provided with a first fastening part 140, and the main body 600 is provided with a second fastening part 630. The first fastening part 140 is configured to engage and fix with the second fastening part 630 to realize the quick assembly and disassembly of the fixed blade support 100 and the main body 600.

[0053] like Figure 6 and Figure 7 As shown, the motor 610 is housed inside the main body 600, and its output shaft is connected to an eccentric drive shaft 620. The drive shaft 620 is inserted into a positioning groove 220 in the moving tool holder 200. It should be noted that the moving tool holder 200 and the fixed tool holder 100 are elastically connected by a torsion spring 210. Under the action of the eccentric drive shaft 620, the moving tool 400 slides back and forth relative to the fixed tool 300. On the other hand, the fixed tool holder 100 is provided with a protruding first fastening part 140. The two opposite ends of the first fastening part 140 are symmetrically provided with guide slopes, and the two guide slopes are arranged along the disassembly and assembly direction of the tool head. The main body 600 is provided with a second fastening part 630. Furthermore, the second fastening part 630 is elastically connected to the main body 600 by a compression spring, and the two opposite ends of the second fastening part 630 are also symmetrically provided with guide slopes.

[0054] The motor 610 is built into the cavity of the main body 600 and drives the eccentric drive shaft 620 to rotate via the output shaft. A torsion spring 210 provides an elastic connection between the moving tool support 200 and the fixed tool support 100. When the eccentric drive shaft 620 is inserted into the positioning groove 220 of the moving tool support 200, the rotational motion is converted into the reciprocating linear motion of the moving tool support 200, causing the moving tool 400 to slide reciprocally relative to the fixed tool 300. The fixed tool support 100 has a first engaging part 140 with a guide slope, whose symmetrically arranged slope structure is positioned along the disassembly / assembly direction. The main body 600 has a second engaging part 630 with a guide slope, whose symmetrically arranged slope structure is positioned along the disassembly / assembly direction. The first engaging part 140 on the fixed tool support 100 and the second engaging part 630 on the main body 600 form a precise fit. Furthermore, the second engaging part 630 is elastically connected via a compression spring to make the disassembly / assembly process smoother. Therefore, when changing the cutter head, the guide slopes of the two sets of locking parts cooperate with each other, and only an appropriate pushing or pulling force is needed to lock or release, making the operation simple and reliable. Of course, the main body 600 and the cutter head with the protective cover can also use various methods such as magnetic attraction, threaded connection, and pin conductive connection to achieve quick disassembly.

[0055] This utility model provides a trimmer, mainly composed of a blade head with a protective cover and a main body 600. The outermost layer of the blade head is a protective cover 500 with a protective comb 520, the middle layer is a moving blade 400 mounted on a moving blade support 200, and the inner layer is a fixed blade 300 mounted on a fixed blade support 100. The moving blade support 200 and the fixed blade support 100 are elastically connected by a torsion spring 210. A first magnet 510 is connected to the protective cover 500 through a fixed bracket 530. The fixed blade support 100 has a limiting groove 130 corresponding to the shape of the fixed bracket 530. The bottom of the limiting groove 130 has a mounting groove 120 corresponding to the shape of a second magnet 110. The second magnet 110 is embedded in the mounting groove 120, and the fixed bracket 530 is embedded in the limiting groove 130. The first magnet 510 and the second magnet 110 are attracted to each other. The protective cover 500 has an arc-shaped protective comb 520 that curves towards the moving blade 400 at its end, forming a matching gap with the fixed blade comb 310 to ensure that the hair can be effectively guided to the cutting area. The fixed blade support 100 and the main body 600 are quickly locked together by a snap-fit ​​structure with an inclined surface. The motor 610 inside the main body 600 cooperates with the positioning groove 220 of the moving blade support 200 through the eccentric drive shaft 620, converting the rotational motion into the horizontal reciprocating motion of the moving blade 400.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cutting head with a protective cover, characterized in that, include: Fixed tool holder (100); The moving tool holder (200) is movably mounted on the fixed tool holder (100); A fixed blade (300) is fixedly mounted on the fixed blade bracket (100); A movable blade (400) is fixedly mounted on the movable blade bracket (200), and the movable blade (400) is movable relative to the fixed blade (300); A protective cover (500) is disposed on the fixed blade support (100) and located on the side of the moving blade (400) away from the fixed blade (300). The protective cover (500) is used to isolate the moving blade (400).

2. The blade with a protective cover according to claim 1, characterized in that, The protective cover (500) is detachably connected to the fixed blade support (100).

3. The cutting head with a protective cover according to claim 2, characterized in that, The protective cover (500) is detachably connected to the fixed blade support (100) via a magnetic attraction structure. The magnetic attraction structure includes a first magnet (510) disposed on the protective cover (500) and a second magnet (110) disposed on the fixed blade support (100). The first magnet (510) and the second magnet (110) attract each other with polarity to realize the assembly and disassembly of the protective cover (500) and the fixed blade support (100).

4. The cutting head with a protective cover according to claim 3, characterized in that, The fixed blade holder (100) has a limiting groove (130), and an installation groove (120) is provided in the limiting groove (130). The second magnet (110) is embedded in the installation groove (120). The first magnet (510) is mounted on the protective cover (500) by a fixing bracket (530). The fixing bracket (530) is embedded in the limiting groove (130) and is configured to space the first magnet (510) and the second magnet (110).

5. The cutting head with a protective cover according to claim 1, characterized in that, The protective cover (500) is provided with a protective comb (520) at one end near the cutting end of the moving blade (400).

6. The cutting head with a protective cover according to claim 5, characterized in that, The fixed blade (300) is provided with a fixed blade comb (310) at one end near the cutting end of the moving blade (400), and the cutting end of the moving blade (400) is confined within a safe cutting space formed by the fixed blade comb (310) and the protective comb (520).

7. The cutting head with a protective cover according to claim 6, characterized in that, The fixed-blade comb (310) and the protective comb (520) are arranged aligned with each other, or in a completely staggered manner, or in a partially staggered manner.

8. The cutting head with a protective cover according to claim 5, characterized in that, The protective comb (520) is bent along its length toward the side where the moving blade (400) is located, forming an arc-shaped structure that protrudes toward the moving blade (400).

9. A trimmer, characterized in that, It includes a main body (600) and a cutter head with a protective cover as described in any one of claims 1 to 8, wherein the fixed cutter support (100) is detachably connected to the main body (600).

10. The trimmer according to claim 9, characterized in that, The main body (600) is equipped with a motor (610) and a drive shaft (620). The drive shaft (620) is driven on the motor (610). The moving blade support (200) is provided with a positioning groove (220). The moving blade support (200) is connected to the main body (600) by inserting the drive shaft (620) into the positioning groove (220). The fixed blade support (100) is provided with a first fastening part (140). The main body (600) is provided with a second fastening part (630). The first fastening part (140) is configured to engage and fix with the second fastening part (630) to realize the loading and unloading of the fixed blade support (100) and the main body (600).

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