Tool bit, tool bit assembly and hair ball trimmer applying tool bit assembly

Abstract

The utility model relates to a cutter head which comprises a cutter head and a plurality of blades arranged on the surface of the cutter head, each blade and the cutter head are integrated, the cutter head is punched upwards to form the blades, a plurality of punching holes of the cutter head serve as slag discharging holes, and the blades and the slag discharging holes are evenly distributed in the circumferential direction of the cutter head at intervals. The blade is a part of the cutter head, a part of the body of the cutter head is bent to form the blade, and a part of the body of the cutter head is bent upwards to form the slag discharging hole in the cutter head. The blades are formed by bending part of the cutter head body, the blades and the cutter head are integrated, in the process that the cutter head rotates relative to the mesh enclosure, the blades and the cutter head can keep good consistency, the blades on the cutter head can keep good consistency, and therefore the blades and the mesh enclosure can also keep good consistency. And the cutting effect between each blade and the fixed cutting edge of the mesh enclosure is good, and the generated noise is low.

Description

Technical Field

[0001] The utility model relates to a trimming tool, in particular to a cutter head, a cutter head assembly and a fuzz trimmer applying the cutter head assembly. Background Art

[0002] A fuzz trimmer, also known as a lint remover, a hair clipper or a fabric shaver, is a small household appliance designed specifically for removing lint balls on the surface of clothes.

[0003] A Chinese utility model patent with an application number of 202321000621.0 (publication number CN 219991951 U) discloses a cutter head assembly of a fuzz trimmer. A net cover is covered above the cutter head assembly. The cutter head assembly includes a bracket, a plurality of blades and a connecting shaft. The bracket is disc-shaped and has a front surface, a back surface and a plurality of through grooves for ventilation that penetrate the front surface and the back surface. Each through groove extends along the radial direction of the bracket, and the plurality of through grooves are circumferentially and evenly spaced around the axis of the bracket; the plurality of blades are respectively installed in the plurality of through grooves one by one, and the plurality of blades are all located on the front surface of the bracket. The plurality of blades are all arranged along the radial direction of the bracket, and the plurality of blades are circumferentially and evenly spaced around the axis of the bracket; the connecting shaft is perpendicular to the bracket, the connecting shaft is fixedly connected to the back surface of the bracket, the connecting shaft is coaxially arranged with the bracket, and the connecting shaft is connected to the driving motor of the fuzz trimmer, so that the driving motor drives the bracket to rotate through the connecting shaft.

[0004] Existing fuzz trimmers all adopt the above cutter head design, and the blades are independently connected to the bracket in a way of threading needles. Because the stability of threading needles is not high, it is difficult to keep the same consistency between the independently arranged blades and the fixed cutting edges of the net cover at the same time, resulting in a relatively large noise during the use of the fuzz trimmer.

[0005] Moreover, the connecting shaft on the bracket is directly connected to the driving motor. Due to certain dimensional errors in the production process of each component, the rotation centers of the motor shaft and the connecting shaft do not completely coincide. A relatively large noise will also be generated during the use of the fuzz trimmer. Summary of the Utility Model

[0006] The first technical problem to be solved by the utility model is to provide a cutter head with good consistency with the cutting edge surface of the net cover and low noise according to the current situation of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a cutter head assembly applying the above cutter head according to the current situation of the prior art.

[0008] The third technical problem to be solved by the utility model is to provide a fuzz trimmer applying the above cutter head assembly according to the current situation of the prior art.

[0009] The technical solution adopted by the present utility model to solve the above-mentioned first technical problem is as follows: A cutter head includes a cutter disc and a plurality of blades arranged on the surface of the cutter disc. Each of the blades and the cutter disc are an integral part. The cutter disc is upwardly stamped to form the blades, and a plurality of stamping holes on the cutter disc serve as slag discharge holes. Each blade and the slag discharge holes are evenly spaced along the circumferential direction of the cutter disc. The blade is a part of the cutter disc. A part of the body of the cutter disc is upwardly stamped and bent to form the blade, and a part of the body of the cutter disc is upwardly bent to form the slag discharge holes on the cutter disc.

[0010] In order to improve the trimming efficiency of the blades and enable the trimmed lint balls to smoothly enter the slag discharge holes, the length direction of the blades is substantially the same as the radial direction of the cutter disc. The positive projection of the top edge of each blade on the plane where the cutter disc is located falls within the slag discharge hole adjacent to the blade. The fact that the length direction of the blades is substantially the same as the radial direction of the cutter disc enables the blades to form more cutting units and a larger cutting area with the fixed cutting edges on the mesh cover during rotation, thereby improving the cutting efficiency. The positive projection of the top edge of the blade on the plane where the cutter disc is located falls within the slag discharge hole corresponding to the blade. That is to say, the bending angle of the blade is less than 90 degrees, and the rotation direction of the cutter head is the same as the direction of the blade facing the slag discharge hole corresponding to the blade. After the blade and the fixed cutting edge on the mesh cover shear the lint ball, the blade plays a role in blocking the trimmed lint ball, so that the trimmed lint ball and other debris naturally fall into the adjacent slag discharge hole.

[0011] In order to improve the cooperation degree between the blade and the fixed cutting edge on the mesh cover, the blade includes a blade foot and a cutting edge, and the cutting edge has a radian.

[0012] The technical solution adopted by the present utility model to solve the above-mentioned second technical problem is as follows: A cutter head assembly includes a mesh cover and a rotatable first transmission member, and further includes the above-mentioned cutter head. The mesh cover covers the cutter head from above, and the first transmission member is connected below the cutter head and is used to drive the cutter head to rotate, so that the cutter head and the mesh cover achieve cutting.

[0013] In order to facilitate the first transmission member to drive the cutter head to rotate, the cutter disc is provided with a first positioning hole, and the first transmission member is provided with a first positioning post. The first positioning post passes through the first positioning hole so that the first transmission member drives the cutter disc to rotate.

[0014] In order to improve the support strength for the cutter disc, the first transmission member is provided with a plurality of support arms extending from the inside to the outside. The support arms are used to support the cutter disc, and the free ends of the support arms are provided with the above-mentioned first positioning posts.

[0015] In order to improve the consistency between the cutter head and the wire mesh cover and thus reduce noise, an installation hole is provided at the center of the cutter head, and the first transmission member is provided with an installation post passing through the installation hole; a second positioning hole is provided on the installation post, and a second positioning post penetrating into the second positioning hole is provided at the center of the bottom surface of the wire mesh cover. The first transmission member drives the cutter head to rotate through the cooperation of the first positioning post and the first positioning hole. The cooperation of the second positioning hole and the second positioning post enables each cutter head to always rotate around the second positioning post on the wire mesh cover, and the cutter head and the fixed cutting edge of the wire mesh cover always maintain good cooperation, thereby reducing the generation of noise.

[0016] In order to enable the rotation center of the cutter head to automatically correct corresponding to the rotation center of the motor during the rotation of the cutter head assembly, the cutter head assembly further includes a second transmission member connected to the motor. The first transmission member is provided with a downward-opening transmission chamber, and the second transmission member is provided with a hook claw that can be snapped into the transmission chamber. An elastic member is arranged in the transmission chamber, and the elastic member always has a tendency to move away from each other between the first transmission member and the second transmission member.

[0017] Preferably, the second transmission member extends upward with 3 hook claws. The transmission chamber is provided with slideways corresponding to the positions and quantities of the hook claws, and the hook claws can slide up and down along the slideways; the elastic member is located in the space enclosed by the 3 hook claws. The upper end of the elastic member abuts against the inner top wall of the transmission chamber, and the lower end of the elastic member abuts against the second transmission member.

[0018] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: a lint remover, including a housing, and the above-mentioned cutter head assembly is arranged inside the housing.

[0019] Compared with the prior art, the advantages of the present invention are as follows: The blade is formed by stamping a part of the cutter head body, and the blade and the cutter head are an integral part. During the rotation of the cutter head relative to the wire mesh cover, good consistency can be maintained between the blade and the cutter head, and good consistency can be maintained between the blades on the cutter head, so that good consistency can also be maintained between each blade and the wire mesh cover. The cutting effect between each blade and the fixed cutting edge of the wire mesh cover is good, and the generated noise is small. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the cutter head assembly in an embodiment of the present invention;

[0021] Figure 2 is Figure 1 a schematic structural diagram of a part of the cutter head assembly;

[0022] Figure 3 is Figure 2 an exploded view of a part of the cutter head assembly;

[0023] Figure 4 is Figure 3 a cross-sectional view of a partial cutter head assembly in

[0024] Figure 5 is Figure 1 a schematic structural view of the wire mesh cover in Specific Embodiments

[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] As Figures 1 to 5 shown, a preferred embodiment of the cutter head assembly of the present utility model applied to a lint remover is provided. The cutter head assembly includes a wire mesh cover 3, a cutter head 1, a first transmission member 2, an elastic member 5, and a second transmission member 4 arranged in sequence from top to bottom. The second transmission member 4 is connected to a motor (not shown in the figure) and is driven by the motor to rotate. The rotating second transmission member 4 drives the first transmission member 2 and the cutter head 1 to rotate in sequence, and then the rotating cutter head 1 and the fixed cutting edge 33 on the wire mesh cover 3 jointly complete the cutting function.

[0027] The wire mesh cover 3 is disc-shaped and is fixedly arranged on the housing (not shown in the figure) of the lint remover. The wire mesh cover 3 is recessed upward as a whole. A second positioning post 31 protruding downward is provided at the center of the bottom surface of the wire mesh cover 3. A first positioning ring 34 extends downward around the periphery of the wire mesh cover 3. A plurality of square mesh holes 32 are arranged around the second positioning post 31 on the wire mesh cover 3. The mesh holes 32 are spaced apart from each other, and the area between adjacent mesh holes 32 forms a fixed cutting edge 33 that jointly realizes cutting with the cutter head 1.

[0028] As Figure 3 shown, the cutter head 1 includes a circular cutter disc 11 and blades 12 arranged on the cutter disc 11. An installation hole 10 is provided at the center of the cutter disc 11. Six slag discharge holes 13 are arranged on the cutter disc 11 at circumferential intervals around the installation hole 10. The six slag discharge holes 13 are arranged with the installation hole 10 as the center of rotational symmetry. The slag discharge holes 13 are strip-shaped and extend substantially along the radial direction of the cutter disc 11. A first positioning hole 14 and a reinforcing rib 15 are provided in the area between adjacent slag discharge holes 13. A second positioning ring 16 that cooperates with the first positioning ring 34 extends upward around the periphery of the cutter disc 11.

[0029] The slag discharge hole 13 has two longer edges and two shorter edges. One of the two longer edges extends upward with a blade 12. The blade 12 includes a blade foot 121 and a cutting edge 122. The cutting edge 122 has an upward arc, and the cutting edge 122 with an upward arc can closely cooperate with the upwardly recessed wire mesh cover 3. The length direction of each pair of blades 12 and the slag discharge hole 13 is substantially parallel to the radial direction of the cutter disc 11. During the rotation of the blade 12, the blade 12 can form more cutting units with the fixed cutting edge 33 on the wire mesh cover 3 and form a larger cutting area, thereby improving the cutting efficiency.

[0030] In fact, the blade 12 and the cutter head 11 are an integral part, both made of metal. The blade 12 is a part of the cutter head 11. The cutter head 11 is upwardly stamped to form the blade 12, and the punching holes formed during the stamping of the cutter head 11 naturally form the slag discharge holes 13. Among them, the top of the blade 12 inclines towards the side of the slag discharge hole 13. The top edge 12a of the blade 12 extending upward from the edge of each slag discharge hole 13 (in this embodiment, the top edge 12a is the above-mentioned cutting edge 122) falls within the slag discharge hole 13 in the plane where the cutter head 11 is located. That is to say, the bending angle of the blade 12 does not exceed 90 degrees, and as Figure 1 and 3 shown, the rotation direction of the cutter head 1 is counterclockwise, and the direction of the blade towards the corresponding slag discharge hole is also counterclockwise. During actual operation, the rotation direction of the cutter head is consistent with the inclination direction of the blade 12. The top edge 12a of the blade 12 always cuts the surface of the object to be cut (such as sweaters, textile fabrics, etc.) positively, and enables the blade 12 to block the trimmed wool balls. The trimmed wool balls can smoothly enter the slag discharge holes 13.

[0031] The first transmission member 2 is provided with 6 support arms 21 extending from the inside outwards. The support arms 21 are used to support the cutter head 11. The free ends of the support arms 21 are provided with first positioning posts 211. The first positioning posts 211 pass through the above-mentioned first positioning holes 14 so that the first transmission member 2 can drive the cutter head 11 to rotate. An installation post 20 passing through the installation hole 10 of the above-mentioned cutter head 11 is provided at the center of the first transmission member 2. A second positioning hole 201 is provided on the installation post 20. The second positioning post 31 of the wire mesh cover 3 is inserted into the second positioning hole 201. The first transmission member 2 drives the cutter head 1 to rotate through the cooperation of the first positioning post 211 and the first positioning hole. The cooperation of the second positioning hole 201 and the second positioning post 31 enables each cutter head 1 to always rotate around the second positioning post 31 on the wire mesh cover 3. The fixed cutting edges of the cutter head 1 and the wire mesh cover 3 always maintain good cooperation, thereby reducing the generation of noise. In addition, a transmission chamber 2a with an opening downward is provided below the installation post 20. Three sliding channels 22 extending in the vertical direction are provided in the transmission chamber 2a. A resisting portion 221 is provided at the lower end of the sliding channel 22. In this embodiment, the first transmission member 2 is a plastic part. There is good wear resistance between the second positioning hole 201 on the plastic first transmission member 2 and the metal second positioning post 31, which improves the service life of the cutter head assembly.

[0032] The top surface of the second transmission member 4 is provided with three claw hooks 41 at intervals, which can be snapped into the above-mentioned transmission chamber 2a. The three claw hooks 41 respectively correspond to the three slideways 22. Each claw hook 41 can slide up and down along the corresponding slideway 22, and the claw hook 41 is blocked by the blocking portion 221 so that the claw hook 41 will not slide out of the transmission chamber 2a. A transmission hole 42 connected to the motor is provided on the bottom surface of the second transmission member 4. The motor drives the second transmission member 4 to rotate through the transmission hole 42, and then drives the first transmission member 2 and the cutter head 1 to rotate. An elastic member 5 is further arranged in the transmission chamber 2a, and the elastic member 5 is located in the space enclosed by the three claw hooks 41. The upper end of the elastic member 5 abuts against the inner top wall of the transmission chamber 2a, and the lower end of the elastic member 5 abuts against the second transmission member 4. The elastic member 5 always makes the first transmission member 2 and the second transmission member 4 tend to move away from each other. In other embodiments, the first transmission member 2 can also be directly connected to the motor for transmission.

[0033] However, the elastic member 5 in this embodiment can not only accommodate the machining errors of the motor, the second transmission member 4 and the first transmission member 2 in the vertical direction, but also the rotation center of the cutter head 1 and the rotation center of the motor can be automatically corrected through the elastic member 5.

[0034] The present utility model also protects a lint remover, which includes a housing, and the above-mentioned cutter head assembly is arranged inside the housing.

Claims

1. A cutter head, comprising a cutter disc (11) and a plurality of blades (12) arranged on the surface of the cutter disc (11), characterized in that: The blades (12) are integrated with the cutter disc (11); the cutter disc (11) is punched upward to form the blades (12); a plurality of punched holes of the cutter disc (11) serve as slag discharge holes (13); and the blades (12) and slag discharge holes (13) are evenly spaced and distributed along the circumference of the cutter disc (11).

2. The cutter head according to claim 1, characterized in that: The length direction of the blade (12) is substantially the same as the radial direction of the cutter disc (11), and the orthographic projection of the top edge (12a) of each blade (12) on the plane where the cutter disc (11) is located falls within the slag discharge hole (13) adjacent to the blade (12).

3. The cutter head according to claim 1, characterized in that: The blade (12) comprises a blade foot (121) and a blade edge (122), and the blade edge (122) has a curvature.

4. A cutter head assembly, comprising a mesh cover (3) and a rotatable first transmission member (2), characterized in that: It also includes a cutter head (1) as described in any one of claims 1 to 3, the mesh cover (3) covers the top of the cutter head (1), and the first transmission member (2) is connected to the bottom of the cutter head (1) and is used to drive the cutter head (1) to rotate, so that the cutter head (1) and the mesh cover (3) can achieve cutting.

5. The cutter head assembly according to claim 4, characterized in that: The cutter disc (11) is provided with a first positioning hole (14), and the first transmission member (2) is provided with a first positioning column (211). The first positioning column (211) passes through the first positioning hole (14) so ​​that the first transmission member (2) drives the cutter disc (11) to rotate.

6. The cutter head assembly according to claim 5, characterized in that: The first transmission member (2) is provided with a plurality of support arms (21) extending from the inside to the outside, the support arms (21) are used to support the cutter disc (11), and the free ends of the support arms (21) are provided with the first positioning columns (211).

7. The cutter head assembly according to claim 4, characterized in that: The cutter disc (11) is provided with a mounting hole (10) at the center thereof, the first transmission member (2) is provided with a mounting column (20) passing through the mounting hole (10); a second positioning hole (201) is provided on the mounting column (20), and a second positioning column (31) passing through the second positioning hole (201) is provided at the center of the bottom surface of the mesh cover (3).

8. The cutter head assembly according to any one of claims 4 to 7, characterized in that: The invention also comprises a second transmission member (4) connected to the motor, the first transmission member (2) being provided with a transmission chamber (2a) opening downward, the second transmission member (4) being provided with a hook (41) capable of being inserted into the transmission chamber (2a), and an elastic member (5) being arranged in the transmission chamber (2a), the elastic member (5) causing the first transmission member (2) and the second transmission member (4) to always have a tendency to move away from each other.

9. The cutter head assembly according to claim 8, characterized in that: The second transmission member (4) is provided with three hooks (41) extending upwards, and a slideway (22) corresponding to the position and number of the hooks (41) is provided in the transmission chamber (2a), and the hooks (41) can slide up and down along the slideway (22); the elastic member (5) is located in a space enclosed by the three hooks (41), the upper end of the elastic member (5) abuts against the inner top wall of the transmission chamber (2a), and the lower end of the elastic member (5) abuts against the second transmission member (4).

10. A lint trimmer, comprising a housing, characterized in that: A cutter head assembly as claimed in any one of claims 4 to 9 is arranged inside the shell.

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