Hair scissors with adjustable limiting comb

Abstract

The hair scissors are provided with the adjustable limiting comb, the limiting comb is hinged to the tool bit through the swing arm, the guide rod moves in the special-shaped guide groove, front-back adjustment of the limiting comb is achieved, and the hair cutting length is controlled. The special-shaped guide groove is composed of a main groove, a left tooth tip groove and a right tooth tip groove, and sliding guide blocks are evenly distributed in the middle to ensure stable movement of the guide rod. The reset mechanism comprises a torsion spring and a limiting plate, and stability of the swing arm is guaranteed. The left tooth tip groove at the lowermost end is connected with the guide opening, and installation is convenient. The mounting hole is provided with a fan-shaped limiting opening to limit the rotating angle of the swing arm and prevent the guide rod from sliding out. The sliding guide grooves in the two sides of the tool bit are matched with the strip-shaped sliding blocks of the limiting comb, it is guaranteed that the limiting comb moves stably, and deflection is avoided. The overall design improves the control precision, reduces slipping, and is compact in structure and low in cost.

Description

Technical Field

[0001] This utility model specifically relates to a hair clipper with an adjustable limiting comb. Background Technology

[0002] To meet customer needs and adapt to varying hair lengths, hair clippers typically require different blades. To address this issue, Chinese utility model patent document CN209615581U discloses a hair clipper with an adjustable limiting comb. This hair clipper mainly consists of a head, mounting frame, blades, limiting comb, knob, gear, spring, slide rail, and positioning protrusion. By rotating the knob, the gear on the knob moves within a guide groove on the mounting frame, causing the limiting comb to slide on the mounting frame, thereby changing the distance between the end of the limiting comb and the blade, thus adjusting the hair trimming length. After adjusting to the desired trimming length, the spring on the knob engages in a slot on the limiting comb, fixing the knob's position and preventing free rotation, ensuring a stable trimming length.

[0003] However, this hair clipper has the following defects:

[0004] Firstly, the hair clippers themselves are not very large, so the knobs used to change the spacing are also relatively small. In actual use, it is difficult for a person to hold the knob and turn it, and it is very easy for it to slip, making operation extremely inconvenient.

[0005] Secondly, the rotation and positioning of the knob requires the cooperation of multiple parts, and the structure used to change the spacing is extremely complex. It is not only cumbersome to process, but also has high costs, so the market prospects are not good. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a hair clipper with an adjustable limiting comb to address the shortcomings of the prior art. The position of the limiting comb is adjusted by a swing arm, which makes it easier to control and less prone to slippage. In addition, the overall structure is small in size, easy to assemble, and low in cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A hair clipper with an adjustable positioning comb includes a blade head and positioning combs distributed above the blade head. The positioning combs are slidably engaged with the blade head. The clipper is characterized by: a swing arm between the blade head and the positioning comb; the middle of the swing arm is hinged to the blade head; one end of the swing arm extends beyond the blade head, and the other end is connected to a guide rod; the end face of the positioning comb facing the swing arm has a shaped guide groove structure; the lower end of the guide rod is fixedly connected to the swing arm, and the upper end is inserted into the shaped guide groove structure; the swing arm is linked to a reset mechanism.

[0009] The swing arm rotates around its central hinge point with the cutter head, while the guide rod at its end moves within a shaped guide groove structure. This causes the limiting comb to move back and forth within a certain range, thus adjusting the haircut length. The reset mechanism helps the swing arm return to its original position, that is, it positions the swing arm after length adjustment to prevent it from swinging left and right, ensuring that the limiting comb remains stably in its current position. Compared to the knobs in existing technologies, the swing arm is easier to control, less prone to slippage, and has a smaller overall size, making assembly easier and reducing costs.

[0010] The aforementioned hair clipper with adjustable limiting comb can be further configured as follows: the irregular guide groove structure includes a strip-shaped main groove, one side of which is provided with several sets of left tooth tip grooves with identical structures and evenly spaced, and the other side of the main groove is provided with a set of right tooth tip grooves corresponding to each set of left tooth tip grooves. The tip of the right tooth tip groove is inclined towards the swing arm. A set of sliding guide blocks is provided between each set of opposite left tooth tip grooves and right tooth tip grooves. Several sets of sliding guide blocks are arranged evenly spaced along the center line of the main groove. There are gaps on both sides of the sliding guide blocks between the left tooth tip groove and the right tooth tip groove, respectively, through which guide rods can slide.

[0011] The aforementioned hair clipper with adjustable limiting comb can be further configured as follows: the center point of the sliding guide block is higher than the line connecting the center points of the corresponding left and right tooth tip grooves; the sliding guide block has a left inclined surface on the side facing the left tooth tip groove, and a right inclined surface on the side facing the right tooth tip groove; the left inclined surface is inclined towards the left tooth tip groove, and the right inclined surface is inclined towards the right tooth tip groove; the upper part of the sliding guide block has an upper positioning surface, and the two ends of the upper positioning surface are connected to the left and right inclined surfaces respectively; the lower part of the sliding guide block has a positioning arc groove corresponding to an adjacent set of positioning surfaces; the lower part of the sliding guide block also has an upper sliding inclined surface on the side facing the right tooth tip groove, and the upper sliding inclined surface is inclined away from the swing arm until the end of the upper sliding inclined surface is connected to the right inclined surface.

[0012] The sliding guide blocks are located on the center line of the main groove and are evenly spaced to refine the movement path of the guide rod. The upper positioning surface cooperates with the positioning arc groove to limit the vertical movement of the guide rod, ensuring that the guide rod will not shift after adjustment. The left and right inclined surfaces guide the guide rod during adjustment (forward or backward movement of the limiting comb). The reset mechanism is linked with the swing arm to ensure that the swing arm is stable in the current position and avoids left and right swinging. This irregularly shaped guide groove structure allows the limiting comb to move precisely back and forth along the path of the main groove and the tooth tip groove, realizing the adjustment of the haircut length.

[0013] The aforementioned hair clipper with adjustable limiting comb can be further configured such that the left tooth tip groove at the bottom end is connected to a guide opening.

[0014] The limiting comb is easy to install on the cutter head, and the guide rod can enter the irregular guide groove structure along the guide opening.

[0015] The aforementioned hair clipper with adjustable limiting comb can be further configured as follows: the reset mechanism includes a torsion spring distributed between the swing arm and the blade head; the swing arm has a rotating body in the middle; the blade head has a mounting hole corresponding to the rotating body; the rotating body has a pushing surface on the side facing the guide rod, which is perpendicular to the center line of the swing arm; the middle part of the torsion spring is limited between the mounting hole and the pushing surface; the two sides of the mounting hole are symmetrically connected with strip-shaped limiting grooves; the two radial legs of the torsion spring extend toward the two sides of the swing arm until they are inserted into the strip-shaped limiting grooves; the reset mechanism also includes a limiting plate distributed above the mounting hole and the strip-shaped limiting grooves.

[0016] The push surface and the radial feet at both ends of the torsion spring are elastically linked to ensure that the swing arm will not sway left and right after the length of the limiting comb is adjusted. The guide rod is stably inserted into the irregular guide groove structure and remains between the upper positioning surface and the positioning arc groove (the specific set depends on the distance between the limiting comb and the cutter head). The limiting plate is used to limit the torsion spring and prevent it from popping out.

[0017] The aforementioned hair clipper with adjustable limiting comb can be further configured such that a fan-shaped limiting opening is provided on the side of the mounting hole away from the pushing surface.

[0018] The rotation angle of the swing arm is limited to prevent the guide rod from sliding out of the irregular guide groove structure.

[0019] The aforementioned hair clipper with adjustable limiting comb can be further configured such that: sliding guide grooves are provided on both sides of the blade head, and strip-shaped sliding blocks are provided on both sides of each set of sliding guide grooves, with the strip-shaped sliding blocks inserted into the sliding guide grooves and the two fitting together with a gap.

[0020] When the limiting comb moves, it can move along the sliding guide groove and the strip sliding block to avoid the limiting comb from deviating to the left or right.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is an exploded view of an embodiment of the present invention;

[0023] Figure 2 This is an assembly diagram of an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the limiting comb according to an embodiment of the present utility model;

[0025] Figure 4 for Figure 3A magnified view of a portion of point A;

[0026] Figure 5 This is a schematic diagram of the swing arm according to an embodiment of the present utility model.

[0027] 1. Blade head; 2. Limiting comb; 3. Swing arm; 4. Torsion spring; 5. Rotating body; 6. Mounting hole; 7. Pushing surface; 8. Strip-shaped limiting groove; 9. Limiting plate; 10. Guide rod; 11. Fan-shaped limiting opening; 12. Sliding guide groove; 13. Strip-shaped sliding block; a. Irregular guide groove structure; a. Main groove; a1. Left tooth tip groove; a2. Right tooth tip groove; a3. Sliding guide block; a4. Left inclined surface; a5. Right inclined surface; a6. Positioning arc groove; a7. Upper sliding inclined surface; a8. Upper positioning surface; a9. Guide opening; a10. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 5 The hair clipper shown includes an adjustable limiting comb 2, comprising a blade head 1 and limiting combs 2 distributed above the blade head 1. The limiting combs 2 and the blade head 1 are in sliding engagement. A swing arm 3 is provided between the blade head 1 and the limiting comb 2. The middle part of the swing arm 3 is hinged to the blade head 1. One end of the swing arm 3 extends out of the blade head 1, and the other end is connected to a guide rod 10. The end face of the limiting comb 2 facing the swing arm 3 has a shaped guide groove structure a. The lower end of the guide rod 10 is fixedly connected to the swing arm 3, and the upper end is inserted into the shaped guide groove structure a. The swing arm 3 is linked to a reset mechanism. The swing arm 3 rotates around the hinge point between its middle part and the blade head 1, while the guide rod 10 at its end moves within the shaped guide groove structure a, thereby driving the limiting comb 2 to move back and forth within a certain range, thus adjusting the length of the haircut. The function of the reset mechanism is to help the swing arm 3 reset, that is, to position the swing arm 3 after the length adjustment is completed, preventing the swing arm 3 from swinging left and right, and ensuring that the limiting comb 2 is stably maintained in the current position. Compared to the knobs in existing technologies, the swing arm 3 is easier to control, less prone to slippage, and has a smaller overall size, making it easier to assemble and lower in cost.

[0030] The irregular guide groove structure a includes a strip-shaped main groove a1. On one side of the main groove a1, there are several sets of left tooth tip grooves a2 with the same structure and evenly spaced. On the other side of the main groove a1, there is a set of right tooth tip grooves a3 corresponding to each set of left tooth tip grooves a2. The tip of the right tooth tip groove a3 is inclined towards the swing arm 3. A set of sliding guide blocks a4 is provided between each set of opposite left tooth tip grooves a2 and right tooth tip grooves a3. Several sets of sliding guide blocks a4 are evenly spaced along the center line of the main groove a1. There are gaps on both sides of the sliding guide block a4 between it and the left tooth tip groove a2 and the right tooth tip groove a3, through which the guide rod 10 can slide. The center point of the sliding guide block a4 is higher than the line connecting the center point of the corresponding left tooth tip groove a2 and the center point of the right tooth tip groove a3. The sliding guide block a4 has a left inclined surface a5 on the side facing the left tooth tip groove a2 and a right inclined surface a6 on the side facing the right tooth tip groove a3. The left inclined surface a5 is inclined towards the left tooth tip groove a2, and the right inclined surface a6 is inclined towards the right tooth tip groove a3. The upper part of the sliding guide block a4 has an upper positioning surface a9, and the two ends of the upper positioning surface a9 are connected to the left inclined surface a5 and the right inclined surface a6, respectively. The lower part of the sliding guide block a4 has a positioning arc groove a7 corresponding to the adjacent set of positioning surfaces. The lower part of the sliding guide block a4 also has an upper sliding inclined surface a8 on the side facing the right tooth tip groove a3. The upper sliding inclined surface a8 is inclined away from the swing arm 3 until the end of the upper sliding inclined surface a8 is connected to the right inclined surface a6.

[0031] The sliding guide block a4 is located on the center line of the main groove a1, and is evenly spaced to refine the movement path of the guide rod 10. The upper positioning surface a9 cooperates with the positioning arc groove a7 to limit the vertical movement of the guide rod 10, ensuring that the guide rod 10 will not deviate after adjustment. The left inclined surface a5 and the right inclined surface a6 are used to guide the guide rod 10 during adjustment (forward or backward movement of the limiting comb 2). The reset mechanism is linked with the swing arm 3 to ensure that the swing arm 3 is stable in the current position and avoids left and right swinging. This irregular guide groove structure a allows the limiting comb 2 to move precisely back and forth along the path of the main groove a1 and the tooth tip groove, realizing the adjustment of the haircut length.

[0032] The left tooth tip groove a2 at the lowest end is connected to a guide opening a10. This facilitates the installation of the limiting comb 2 on the cutter head 1, and the guide rod 10 can enter the irregular guide groove structure a along the guide opening a10.

[0033] The reset mechanism includes a torsion spring 4 distributed between the swing arm 3 and the cutter head 1. A rotating body 5 is located in the middle of the swing arm 3. The cutter head 1 has a mounting hole 6 corresponding to the rotating body 5. A pushing surface 7, perpendicular to the centerline of the swing arm 3, is located on the side of the rotating body 5 facing the guide rod 10. The middle of the torsion spring 4 is positioned between the mounting hole 6 and the pushing surface 7. A strip-shaped limiting groove 8 is symmetrically connected to both sides of the mounting hole 6. Two radial legs of the torsion spring 4 extend towards both sides of the swing arm 3 until they are inserted into the strip-shaped limiting groove 8. The reset mechanism also includes limiting plates 9 distributed above the mounting hole 6 and the strip-shaped limiting groove 8. The pushing surface 7 and the radial legs at both ends of the torsion spring 4 are elastically linked to ensure that the swing arm 3 does not sway left or right after the length of the limiting comb 2 is adjusted. The guide rod 10 is stably inserted into the irregular guide groove structure a and remains between the upper positioning surface a9 and the positioning arc groove a7 (the specific pair depends on the distance between the limiting comb 2 and the cutter head 1). The limiting plate 9 is used to limit the torsion spring 4 and prevent the torsion spring 4 from popping out.

[0034] A fan-shaped limiting opening 11 is provided on the side of the mounting hole 6 away from the pushing surface 7. This limits the rotation angle of the swing arm 3 and prevents the guide rod 10 from sliding out of the irregular guide groove structure a.

[0035] The cutter head 1 has sliding guide grooves 12 on both sides, and the limiting comb 2 has strip-shaped sliding blocks 13 on both sides corresponding to each set of sliding guide grooves 12. The strip-shaped sliding blocks 13 are inserted into the sliding guide grooves 12 and the two are fitted with a clearance. When the limiting comb 2 moves, it can move along the sliding guide grooves 12 and the strip-shaped sliding blocks 13 to prevent the limiting comb 2 from deviating to the left or right.

Claims

1. A hair clipper with adjustable comb, comprising a blade head, a comb distributed above the blade head, the comb and the blade head being in sliding cooperation, characterized in that: The swing arm is hinged at the middle part to the cutter head, one end of the swing arm extends out of the cutter head, and the other end is connected with a guide rod, the limit comb is provided with a special-shaped guide groove structure towards the end surface of the swing arm, the lower end of the guide rod is fixedly connected with the swing arm, and the upper end is inserted into the special-shaped guide groove structure, and the swing arm is linked with a reset mechanism.

2. The haircutting scissors with adjustable stop comb according to claim 1, characterized in that: The special-shaped guide groove structure comprises a strip-shaped main groove, one side of the main groove is provided with a plurality of groups of left tooth tip grooves which are uniformly arranged in consistent structure, and the other side of the main groove is provided with a group of right tooth tip grooves corresponding to each group of left tooth tip grooves, the tip end of the right tooth tip groove is obliquely arranged towards the swing arm, and a group of sliding guide blocks is arranged between each group of opposite left tooth tip grooves and right tooth tip grooves, a plurality of groups of sliding guide blocks are uniformly arranged along the center line of the main groove, and gaps through which the guide rods can slide are formed between the left tooth tip groove and the right tooth tip groove on both sides of the sliding guide block.

3. The haircutting scissors with adjustable stop comb according to claim 2, characterized in that: The center point of the sliding guide block is higher than the line connecting the center points of the left tooth tip groove and the right tooth tip groove, the left side of the sliding guide block towards the left tooth tip groove is provided with a left inclined surface, the right side of the sliding guide block towards the right tooth tip groove is provided with a right inclined surface, the left inclined surface is inclined towards the left tooth tip groove, the right inclined surface is inclined towards the right tooth tip groove, and the upper part of the sliding guide block is provided with a distributed upper positioning surface, and the two ends of the upper positioning surface are connected with the left inclined surface and the right inclined surface respectively; a positioning arc-shaped groove corresponding to an adjacent group of positioning surfaces is arranged below the sliding guide block, and an upper sliding inclined surface is further arranged on the side of the sliding guide block below towards the right tooth tip groove, and the upper sliding inclined surface is obliquely arranged towards the direction away from the swing arm until the end of the upper sliding inclined surface is connected with the right inclined surface.

4. The haircutting scissors with adjustable stop comb according to claim 3, characterized in that: The left tooth tip groove located at the lowermost end is connected with a guide opening.

5. The hair clipper with an adjustable stop comb according to any one of claims 1 to 4, characterized in that: The reset mechanism comprises a torsion spring distributed between the swing arm and the cutter head, the middle part of the swing arm is provided with a rotating body, the cutter head is provided with a mounting hole corresponding to the rotating body, the side of the rotating body towards the guide rod is provided with a pushing surface arranged perpendicular to the center line of the swing arm, the middle part of the torsion spring is limited between the mounting hole and the pushing surface, the two sides of the mounting hole are symmetrically connected with a strip-shaped limiting groove, and the two radial legs of the torsion spring are respectively elongated towards the two sides of the swing arm until inserted into the strip-shaped limiting groove, and the reset mechanism further comprises a limiting plate distributed above the mounting hole and the strip-shaped limiting groove.

6. The hair clipper with adjustable stop comb of claim 5, wherein: The side of the mounting hole away from the pushing surface is provided with a fan-shaped limiting opening.

7. The hair clipper with an adjustable stop comb according to any one of claims 1 to 4, characterized in that: The two sides of the cutter head are correspondingly provided with sliding guide grooves, the two sides of the limit comb are respectively provided with strip-shaped sliding blocks corresponding to each group of sliding guide grooves, the strip-shaped sliding blocks are inserted into the sliding guide grooves and are gap-fitted with the sliding guide grooves.

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