Hair trimmer

Abstract

The utility model relates to a hair trimmer which comprises a hair trimming tool bit (1) distributed from top to bottom. The tool bit transmission structure (2) is connected with the hair trimming tool bit (1) and is used for driving a blade of the hair trimming tool bit (1) to reciprocate for trimming; the bending structure (4) is bent to drive the hair trimming tool bit (1) to swing; the driving motor (3) is used for providing reciprocating driving force; a conduction structure (5) is arranged in the bending structure (4) and is connected between the driving motor (3) and the tool bit transmission structure (2) to transmit reciprocating driving force; wherein the bending angle of the bending structure (4) is divided into an inner bending angle a1 capable of being bent inwards by 1-30 degrees and an outer bending angle a2 capable of being bent outwards by 1-20 degrees, and the maximum inner bending angle a1 is larger than the maximum outer bending angle a2. The pruning range is wide and the pruning effect is good.

Description

Technical Field

[0001] The present invention relates to a hair trimmer. Background Art

[0002] For the existing cutter head of a hair trimmer, the trimming angle of the trimming cutter head is fixed, resulting in a large limitation in its trimming range. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hair trimmer with a wide trimming range and good trimming effect.

[0004] To solve the above technical problem, the present invention is solved by the following technical solutions:

[0005] A hair trimmer, comprising:

[0006] A hair trimming cutter head distributed from top to bottom;

[0007] A cutter head transmission structure connected to the hair trimming cutter head to drive the blade of the hair trimming cutter head to reciprocate for trimming;

[0008] A bending structure that bends itself to drive the hair trimming cutter head to swing;

[0009] And a drive motor that provides a reciprocating driving force;

[0010] In the bending structure, there is a conduction structure, and the conduction structure is connected between the drive motor and the cutter head transmission structure to transmit the reciprocating driving force; wherein, the bending angle of the bending structure is divided into an inner bending angle a1 that can be bent inward by 1-30 degrees and an outer bending angle a2 that can be bent outward by 1-20 degrees, and the maximum inner bending angle a1 is greater than the maximum outer bending angle a2.

[0011] Further, the bending structure includes a first universal ball joint, a first universal ball joint and a first universal ball seat from top to bottom; the first universal ball joint, the first universal ball joint and the first universal ball seat are all hollow and penetrated. The upper end of the first universal ball joint is connected to the cutter head transmission structure, and the lower end of the first universal ball joint is spherical; the upper end of the first universal ball joint is a spherical inner cavity, and the lower end is spherical; the upper end of the first universal ball seat has a spherical inner cavity; the spherical inner cavity at the upper end of the first universal ball joint is sleeved outside the lower end of the first universal ball joint and is in surface contact and rotational fit, and the lower end is placed in the spherical inner cavity of the first universal ball seat and is in surface contact and rotational fit. The axes of the upper and lower ends of the first universal ball joint are not on the same axis, and the deflection angle b1 between the two axes is 15-45 degrees.

[0012]

[0013] ​Furthermore, the cutter head transmission structure is an eccentric wheel structure, which includes an eccentric wheel body and an output shaft located above; the output shaft is connected to the drive frame of the hair trimming cutter head. The transmission structure includes an upper spring connecting sleeve, a lower spring connecting sleeve and a spring; the lower end of the eccentric wheel body is rotatably installed in the upper end of the first universal ball joint, and the upper end of the upper spring connecting sleeve passes through the first universal ball joint and is rotatably connected to the lower end of the eccentric wheel body. The spring is sleeved between the lower end of the upper spring connecting sleeve and the upper end of the lower spring connecting sleeve, and the lower end of the lower spring connecting sleeve is rotatably connected to the output shaft of the drive motor.

[0014] Furthermore, the upper end of the first universal ball seat is inclined with the outside higher than the inside, the inclination angle b2 is 11 - 30 degrees, the depth of the spherical cavity inside the first universal ball seat is greater than the depth of the cavity outside, and the lower end shape of the first universal ball joint is adapted to the spherical cavity of the first universal ball seat to achieve that the maximum inner bending angle a1 is greater than the maximum outer bending angle a2.

[0015] Furthermore, the bending structure includes, from top to bottom, a second universal ball joint, a second universal ball main joint, a second universal ball secondary joint and a second universal ball seat; the second universal ball joint, the second universal ball main joint, the second universal ball secondary joint and the second universal ball seat are all hollow and penetrating. The upper end of the second universal ball joint is connected to the cutter head transmission structure, and the lower end of the second universal ball joint is spherical; the upper end of the second universal ball main joint is a spherical cavity, and the lower end is spherical; the upper end of the second universal ball secondary joint is a spherical cavity, and the lower end is spherical; the upper end of the second universal ball seat has a spherical cavity; the spherical cavity at the upper end of the second universal ball main joint is sleeved outside the lower end of the second universal ball joint and is in surface - contact rotational fit, and the lower end is placed in the spherical cavity of the second universal ball secondary joint and is in surface - contact rotational fit, and the lower end of the second universal ball secondary joint is placed in the spherical cavity of the second universal ball seat and is in surface - contact rotational fit.

[0016] Furthermore, the cutter head transmission structure is an eccentric wheel structure, which includes an eccentric wheel body and an output shaft located above; the output shaft is connected to the drive frame of the hair trimming cutter head. The transmission structure includes an upper connecting rod connecting sleeve, a lower connecting rod connecting sleeve and multiple mutually articulated connecting rods; the lower end of the eccentric wheel body is rotatably installed in the upper end of the second universal ball joint, and the upper end of the upper connecting rod connecting sleeve passes through the second universal ball joint and is rotatably connected to the lower end of the eccentric wheel body. The connecting rods are connected between the lower end of the upper connecting rod connecting sleeve and the upper end of the lower connecting rod connecting sleeve, and the lower end of the lower connecting rod connecting sleeve is rotatably connected to the output shaft of the drive motor.

[0017] Furthermore, a soft rubber sleeve is sleeved outside the bending structure.

[0018] Furthermore, the soft rubber sleeve has folds distributed step by step in circles from top to bottom.

[0019] With the above structural design, compared with the prior art, it has the following advantages:

[0020] By adding a bending structure, the self-bending drives the hair trimming cutter head to swing, so that the trimming angle of the trimming cutter head can be adjusted. During the trimming process, the hair trimming cutter head can fit the skin more closely, improving its trimming effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a structural form of the present utility model;

[0022] Figure 2 is Figure 1 the A-A view of

[0023] Figure 3 is Figure 2 a schematic diagram with the angle marked;

[0024] Figure 4 is a schematic structural diagram of another structural form of the present utility model;

[0025] Figure 5 is Figure 4 the A-A view of

[0026] Figure 6 is a schematic diagram of the bending structure of the present utility model.

[0027] As shown in the figure:

[0028] 1. Hair trimming cutter head;

[0029] 2. Cutter head transmission structure; 211. Eccentric wheel main body; 212. Output shaft;

[0030] 3. Driving motor;

[0031] 4. Bending structure;

[0032] 5. Conduction structure;

[0033] 611. First universal ball joint, 612. First universal ball joint, 613. First universal ball seat;

[0034] 711. Second universal ball joint, 712. Second universal ball main joint, 713. Second universal ball secondary joint, 714. Second universal ball seat;

[0035] 811. Upper connecting rod sleeve, 812. Lower connecting rod sleeve, 813. Connecting rod;

[0036] 9. Soft rubber sleeve. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings:

[0038] The utility model discloses a hair trimmer, as shown in Figures 1 - 6 the figure, which includes: a hair trimming cutter head 1; a cutter head transmission structure 2 connected to the hair trimming cutter head 1 to drive the blade of the hair trimming cutter head 1 to reciprocate for trimming; a bending structure 4 that bends itself to drive the hair trimming cutter head 1 to swing; and a driving motor 3 that provides a reciprocating driving force; in the bending structure 4, there is a conduction structure 5, and the conduction structure 5 is connected between the driving motor 3 and the cutter head transmission structure 2 to transmit the reciprocating driving force; overall, the hair trimming cutter head 1, the cutter head transmission structure 2, the bending structure 4, and the driving motor 3 are distributed from top to bottom. Among them, the bending angles of the bending structure 4 include an inner bending angle a1 that can be bent inward by 1-30 degrees and an outer bending angle a2 that can be bent outward by 1-20 degrees, and the maximum inner bending angle a1 is greater than the maximum outer bending angle a2. Among them, the inner bending angle a1 and the outer bending angle a2 are shown in Figure 6 the figure.

[0039] The following is one kind of bending structure 4. The bending structure 4 includes a first universal ball joint 611, a first universal ball joint 612, and a first universal ball seat 613 from top to bottom; the first universal ball joint 611, the first universal ball joint 612, and the first universal ball seat 613 are all hollow and penetrated. The upper end of the first universal ball joint 611 is connected to the cutter head transmission structure 2, and the lower end of the first universal ball joint 611 is spherical; the upper end of the first universal ball joint 612 is a spherical cavity, and the lower end is spherical; the upper end of the first universal ball seat 613 has a spherical cavity; the spherical cavity at the upper end of the first universal ball joint 612 is sleeved outside the lower end of the first universal ball joint 611 and is in surface contact and rotational fit, and the lower end is placed in the spherical cavity of the first universal ball seat 613 and is in surface contact and rotational fit. The axes of the upper and lower ends of the first universal ball joint 612 are not on the same axis, and the included angle b1 between the two axes is 15-45 degrees. The included angle b1 is marked in Figure 3 the figure.

[0040] The cutter head transmission structure 2 is an eccentric wheel structure, which includes an eccentric wheel main body 211 and an output shaft 212 located above; the output shaft 212 is connected to the driving frame of the hair trimming cutter head 1. The conduction structure 5 includes an upper spring connecting sleeve 511, a lower spring connecting sleeve 512, and a spring 513; the lower end of the eccentric wheel main body 211 is rotatably installed in the upper end of the first universal ball joint 611. The upper end of the upper spring connecting sleeve 511 passes through the first universal ball joint 611 and is rotatably connected to the lower end of the eccentric wheel main body 211. The spring 513 is sleeved on the lower end of the upper spring connecting sleeve 511 and the upper end of the lower spring connecting sleeve 512, and the lower end of the lower spring connecting sleeve 512 is rotatably connected to the output shaft of the driving motor 3.

[0041] The upper end of the first universal ball head seat 613 is inclined with the outside higher than the inside, the inclination angle b2 is 11-30 degrees, the depth of the spherical cavity inside the first universal ball head seat 613 is greater than the depth of the cavity outside, and the lower end shape of the first universal ball head joint 612 is adapted to the spherical cavity of the first universal ball head seat 613 to achieve that the maximum inner bending angle a1 is greater than the maximum outer bending angle a2. The inclination angle b2 is marked in Figure 3 it.

[0042] The following is another bending structure 4. The bending structure 4 includes a second universal ball head section 711, a second universal ball head main joint 712, a second universal ball head secondary joint 713 and a second universal ball head seat 714 from top to bottom; the second universal ball head section 711, the second universal ball head main joint 712, the second universal ball head secondary joint 713 and the second universal ball head seat 714 are all hollow and penetrating. The upper end of the second universal ball head section 711 is connected to the cutter head transmission structure 2, and the lower end of the second universal ball head section 711 is spherical; the upper end of the second universal ball head main joint 712 is a spherical cavity, and the lower end is spherical; the upper end of the second universal ball head secondary joint 713 is a spherical cavity, and the lower end is spherical; the upper end of the second universal ball head seat 714 has a spherical cavity; the spherical cavity at the upper end of the second universal ball head main joint 712 is sleeved outside the lower end of the second universal ball head section 711 and is in surface contact and rotational fit, and the lower end is placed in the spherical cavity of the second universal ball head secondary joint 713 and is in surface contact and rotational fit, and the lower end of the second universal ball head secondary joint 713 is placed in the spherical cavity of the second universal ball head seat 714 and is in surface contact and rotational fit.

[0043] The cutter head transmission structure 2 is an eccentric wheel structure, which includes an eccentric wheel main body 211 and an output shaft 212 located above; the output shaft 212 is connected to the drive frame of the hair trimming cutter head 1. The conduction structure 5 includes an upper connecting rod sleeve 811, a lower connecting rod sleeve 812 and a plurality of mutually hinged connecting rods 813; the lower end of the eccentric wheel main body 211 is rotatably installed in the upper end of the second universal ball head section 711, the upper end of the upper connecting rod sleeve 811 passes through the second universal ball head section 711 and is rotationally connected to the lower end of the eccentric wheel main body 211, the connecting rod 813 is connected between the lower end of the upper connecting rod sleeve 811 and the upper end of the lower connecting rod sleeve 812, and the lower end of the lower connecting rod sleeve 812 is rotationally connected to the output shaft of the drive motor 3.

[0044] For the hair trimmer with the above two structural forms, a soft rubber sleeve 9 is sleeved outside the bending structure 4. The soft rubber sleeve 9 has a series of gradually distributed folds 911 from top to bottom.

[0045] The above description is only for the best embodiment of the present invention and should not be construed as a limitation on the claims. The present invention is not limited to the above embodiments, and all changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A hair trimmer, characterized in that: include: Top-down distribution Hair trimming blade (1); A cutter head transmission structure (2) connected to the hair trimming cutter head (1) and driving the blade of the hair trimming cutter head (1) to move back and forth for trimming; The bending structure (4) bends itself to drive the hair trimming blade head (1) to swing; and a drive motor (3) for providing a reciprocating drive force; There is a conducting structure (5) in the bending structure (4), and the conducting structure (5) is connected between the driving motor (3) and the cutter head transmission structure (2) to transmit a reciprocating driving force; wherein the bending angle of the bending structure (4) is divided into an inner bending angle a1 that can be bent inwardly by 1-30 degrees and an outer bending angle a2 that can be bent outwardly by 1-20 degrees, and the maximum inner bending angle a1 is greater than the maximum outer bending angle a2.

2. A hair trimmer according to claim 1, characterized in that: The bending structure (4) comprises, from top to bottom, a first universal ball joint (611), a first universal ball joint (612) and a first universal ball seat (613); the first universal ball joint (611), the first universal ball joint (612) and the first universal ball seat (613) are hollow and penetrate through, the upper end of the first universal ball joint (611) is connected to the cutter head transmission structure (2), and the lower end of the first universal ball joint (611) is in a ball head shape; the first universal ball joint (612) ) has a ball head-shaped inner cavity at its upper end and a ball head-shaped inner cavity at its lower end; the upper end of the first universal ball head seat (613) has a ball head-shaped inner cavity; the ball head-shaped inner cavity at the upper end of the first universal ball head joint (612) is sleeved on the outer surface of the lower end of the first universal ball head joint (611) for surface contact rotational fit, and the lower end is inserted into the ball head-shaped inner cavity of the first universal ball head seat (613) for surface contact rotational fit, and the upper and lower ends of the first universal ball head joint (612) are not on the same axis, and the deflection angle b1 between the axes of the two is 15-45 degrees.

3. A hair trimmer according to claim 2, characterized in that: The cutter head transmission structure (2) is an eccentric wheel structure, comprising an eccentric wheel body (211) and an output shaft (212) located at the top; the output shaft (212) is connected to a drive frame of the hair trimming cutter head (1); the transmission structure (5) comprises an upper spring connecting sleeve (511), a lower spring connecting sleeve (512) and a spring (513); the lower end of the eccentric wheel body (211) is rotatably mounted in the upper end of a first universal ball joint (611); the upper end of the upper spring connecting sleeve (511) passes through the first universal ball joint (611) and is rotatably connected to the lower end of the eccentric wheel body (211); the spring (513) is sleeved on the lower end of the upper spring connecting sleeve (511) and the upper end of the lower spring connecting sleeve (512); the lower end of the lower spring connecting sleeve (512) is rotatably connected to the output shaft of the drive motor (3).

4. A hair trimmer according to claim 2, characterized in that: The upper end of the first universal ball head seat (613) is inclined with the outer side being higher than the inner side, and the inclined angle b2 is 11-30 degrees. The inner ball head-shaped inner cavity depth of the first universal ball head seat (613) is greater than the outer inner cavity depth. The lower end shape of the first universal ball head joint (612) is adapted to the ball head-shaped inner cavity of the first universal ball head seat (613) to achieve a maximum inner bending angle a1 greater than a maximum outer bending angle a2.

5. A hair trimmer according to claim 1, characterized in that: The bending structure (4) comprises, from top to bottom, a second universal ball joint (711), a second universal ball main joint (712), a second universal ball secondary joint (713) and a second universal ball seat (714); the second universal ball joint (711), the second universal ball main joint (712), the second universal ball secondary joint (713) and the second universal ball seat (714) are hollow and penetrate through; the upper end of the second universal ball joint (711) is connected to the cutter head transmission structure (2), and the lower end of the second universal ball joint (711) is in a ball head shape; the second universal ball main joint (712) The upper end is a ball head type inner cavity, and the lower end is in a ball head shape; the upper end of the second universal ball head secondary joint (713) is a ball head type inner cavity, and the lower end is in a ball head shape; the upper end of the second universal ball head seat (714) has a ball head type inner cavity; the ball head type inner cavity at the upper end of the second universal ball head main joint (712) is sleeved on the outer surface of the lower end of the second universal ball head joint (711) for surface contact rotation fit, and the lower end is placed in the ball head type inner cavity of the second universal ball head secondary joint (713) for surface contact rotation fit, and the lower end of the second universal ball head secondary joint (713) is placed in the ball head type inner cavity of the second universal ball head seat (714) for surface contact rotation fit.

6. A hair trimmer according to claim 5, characterized in that: The cutter head transmission structure (2) is an eccentric wheel structure, comprising an eccentric wheel body (211) and an output shaft (212) located at the top; the output shaft (212) is connected to a drive frame of the hair trimming cutter head (1); the transmission structure (5) comprises an upper connecting rod connecting sleeve (811), a lower connecting rod connecting sleeve (812) and a plurality of connecting rods (813) hinged to each other; the lower end of the eccentric wheel body (211) is rotatably mounted in the upper end of the second universal ball joint (711); the upper end of the upper connecting rod connecting sleeve (811) passes through the second universal ball joint (711) and is rotatably connected to the lower end of the eccentric wheel body (211); the connecting rod (813) is connected between the lower end of the upper connecting rod connecting sleeve (811) and the upper end of the lower connecting rod connecting sleeve (812); and the lower end of the lower connecting rod connecting sleeve (812) is rotatably connected to the output shaft of the drive motor (3).

7. A hair trimmer according to claim 1, characterized in that: The bending structure (4) is covered with a soft rubber sleeve (9).

8. A hair trimmer according to claim 7, characterized in that: The soft rubber sleeve (9) has circles of folds (911) distributed step by step from top to bottom.

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