Moving knife transmission mechanism of hair scissors

Abstract

The utility model relates to a moving blade transmission mechanism of hair scissors, which comprises a transmission disc rotatably arranged on a carrier, an eccentric part linked with an output shaft of a motor, and a sliding groove inserted into the transmission disc from the eccentric part, so that the transmission disc can be driven to swing back and forth around the rotation center of the transmission disc. The transmission disc is further provided with a plurality of transmission shafts capable of driving the movable blades to swing in a reciprocating mode. The multiple transmission shafts can stably drive the movable blade and the transmission disc to swing back and forth together.

Description

Technical Field

[0001] The utility model relates to the technical field of hair clippers, in particular to a driving mechanism for the moving blade of a hair clipper. Background Art

[0002] A hair trimmer is disclosed in CN212501965U, which includes a stationary blade, a moving blade, a stationary blade fixing seat, a moving blade fixing seat, a moving blade driving mechanism, and a main housing. The moving blade is installed on the moving blade fixing seat, and the stationary blade is installed on the stationary blade fixing seat. Both the moving blade and the stationary blade are of annular structures, and both the moving blade and the stationary blade are provided with tooth portions. The tooth portions are teeth extending inward along the moving blade and the stationary blade respectively. The moving blade driving mechanism drives the moving blade to rotate to cut hair. The moving blade driving mechanism includes a motor and a swing rod. One end of the swing rod extends into a groove of the moving blade fixing seat. A fulcrum in the middle position of the swing rod is movable relative to the main housing. The shaft end of the motor is connected with an eccentric member arranged eccentrically with respect to the motor axis. A sliding groove for the eccentric member to extend into is provided on the swing rod, and the eccentric member extends into this sliding groove. The eccentric movement of the eccentric member drives the swing rod to perform a swinging movement, so that the moving blade swings back and forth and cooperates with the stationary blade to be able to shave close to the head. In this structure, only one eccentric member drives the moving blade, and it is not stable enough when driving the moving blade to swing and is prone to shaking. Content of the Utility Model

[0003] Objective of the utility model: In order to overcome the defects of the prior art, the utility model provides a driving mechanism for the moving blade of a hair clipper, which can stably drive the moving blade and the transmission disc to swing back and forth together through multiple transmission shafts.

[0004] Technical solution of the utility model: A driving mechanism for the moving blade of a hair clipper includes a transmission disc rotatably installed on a carrier and an eccentric member linked to the output shaft of the motor. The eccentric member is inserted into a sliding groove on the transmission disc, so as to drive the transmission disc to make a reciprocating swing around its rotation center. A plurality of transmission shafts capable of driving the moving blade to make a reciprocating swing are further provided on the transmission disc.

[0005] By adopting the above technical solution, the output shaft of the motor drives the eccentric member to rotate, and can drive the transmission disc to swing back and forth through cooperation with the sliding groove. Then, the plurality of transmission shafts provided on the transmission disc can stably drive the moving blade to swing back and forth together, and the vibration of the moving blade is small.

[0006] Preferably, the carrier is the body of the hair clipper, and further includes a transmission wheel linked to the output shaft of the motor. An output shaft I or an output groove I capable of driving the first moving cutter head to rotate is further provided at the center of the transmission wheel. The output shaft I or the output groove I cooperates with the first moving cutter head to rotate synchronously, so that the transmission wheel can drive the first moving cutter head to continuously rotate.

[0007] Preferably, the rotation speed of the eccentric member is higher than that of the transmission wheel, meeting the requirement that the rotation speed of the moving blade is higher than that of the first moving cutter head and avoiding excessive load on the motor.

[0008] Preferably, the carrier is the body of the hair clipper, and further includes a transmission wheel linked to the output shaft of the motor and a plurality of output gears linked to the transmission wheel. An output shaft two or an output groove two for driving the rotation of each moving cutter head two is provided at the center of each output gear. Multiple moving cutter heads two can also be installed. The transmission wheel drives the plurality of output gears to rotate synchronously. The output shaft two or the output groove two cooperates with the moving cutter head two to rotate synchronously, and the plurality of output gears can drive each moving cutter head two to rotate continuously.

[0009] Preferably, a driven gear is further provided above the transmission wheel. The driven gear rotates synchronously with the transmission wheel. The plurality of output gears are directly or indirectly engaged with the driven gear, and the rotation speeds of the output gears are the same. Designing the driven gear and the transmission wheel in a layered manner up and down facilitates the transmission of the plurality of output gears.

[0010] Preferably, an output shaft two or an output groove two for driving the rotation of the corresponding moving cutter head two is also provided at the center of the driven gear. The driven gear and the output gears have the same rotation speed, facilitating the transmission of the plurality of moving cutter heads two and having high synchronism.

[0011] Preferably, the rotation speed of the eccentric member is higher than that of the output gear.

[0012] Preferably, a driving gear is provided on the eccentric member. The driving gear is coaxially connected to the output shaft of the motor. The driving gear is directly or indirectly engaged with the transmission wheel, and the rotation speed of the driving gear is higher than that of the transmission wheel. Since the eccentric member and the driving gear have the same speed, after transmission, the rotation speed of the eccentric member will be greater than that of the transmission wheel.

[0013] Preferably, the rotation centers of the transmission disc and the transmission wheel are coaxially arranged.

[0014] Preferably, a convex shaft is provided on the carrier. A shaft cavity is provided at the center of the convex shaft. A rotating shaft that can be rotatably inserted into the shaft cavity is provided at the center of the transmission wheel. A shaft hole for inserting the convex shaft is provided at the center of the transmission disc, and a rotational fit is formed with the convex shaft. This facilitates the concentric installation of the transmission disc and the transmission wheel. Description of the Drawings

[0015] Figure 1 Structural diagram of the installation of the transmission disc in the first specific embodiment of the present invention;

[0016] Figure 2 Structural diagram of the moving blade mounting seat in the first specific embodiment of the present invention;

[0017] Figure 3 Structural diagram of the installation of the transmission wheel in the second specific embodiment of the present invention;

[0018] Figure 4 Structural diagram of the drive wheel in Specific Embodiment 2 of the present utility model;

[0019] Figure 5 Structural diagram of the installation of the drive disc and the drive wheel in Specific Embodiment 2 of the present utility model;

[0020] Figure 6 Structural diagram of the first moving blade mounting seat in Specific Embodiment 2 of the present utility model;

[0021] Figure 7 Structural diagram of the carrier in Specific Embodiment 2 of the present utility model;

[0022] Figure 8 Structural diagram of the drive disc in Specific Embodiment 2 of the present utility model;

[0023] Figure 9 Structural diagram of the drive wheel in Specific Embodiment 2 of the present utility model;

[0024] Figure 10 Structural diagram of the installation of the output gear in Specific Embodiment 3 of the present utility model;

[0025] Figure 11 Structural diagram of the installation of the output gear in Specific Embodiment 3 of the present utility model;

[0026] Figure 12 Structural diagram of multiple second moving blade mounting seats in Specific Embodiment 3 of the present utility model.

[0027] In the figure: carrier A, motor B, drive disc 1, chute 11, eccentric part 2, transmission shaft 3, moving blade mounting seat C, jack C1,

[0028] drive wheel 4, first output shaft 51, first output groove 52, first moving cutter head mounting seat C', driving gear 9, convex shaft A1, shaft cavity A11, rotating shaft 10, shaft hole 12,

[0029] output gear 6, second output shaft 71, second output groove 72, second moving cutter head mounting seat C'', driven gear 8, linkage shaft D. Specific embodiments

[0030] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0031] As Figure 1-2As shown: Specific Embodiment 1 of the present utility model, a driving mechanism for a moving blade of a hair clipper, includes a driving disk 1 rotatably mounted on a carrier A, and an eccentric member 2 linked to the output shaft of a motor B. The eccentric member 2 also has a through hole for inserting the output shaft of the motor. The center of the eccentric member 2 is offset from the output shaft of the motor. The eccentric member 2 is inserted into a sliding groove 11 on the driving disk 1, so as to drive the driving disk 1 to make a reciprocating swing around its rotation center. The driving disk 1 is also provided with a plurality of transmission shafts 3 that can drive the moving blade to make a reciprocating swing. The transmission shafts 3 are fixedly or integrally provided on the driving disk 1, and the plurality of transmission shafts 3 are also circumferentially distributed. The moving blade is mounted on a moving blade mounting seat C, and the transmission shaft is directly or indirectly inserted into a jack C1 of the moving blade mounting seat C to drive the moving blade to make a reciprocating swing. The moving blade has an annular structure, or can also be a strip structure for linear reciprocation.

[0032] As Figure 3-9 shown: Specific Embodiment 2 of the present utility model can also be provided with an intermediate moving knife head 1. The driving structure of the moving knife head 1 is as follows: The driving mechanism for the moving blade of the hair clipper includes a carrier A and a motor B. The carrier A is the body of the hair clipper. It also includes a transmission wheel 4 linked to the output shaft of the motor. An output shaft 51 or an output groove 52 for driving the rotation of the moving knife head 1 is also provided at the center of the transmission wheel 4. When an output groove 52 is provided at the center of the transmission wheel 4, an output shaft 51 is directly or indirectly provided on the moving knife head mounting seat C'. The output shaft 51 is inserted into the output groove 52 to achieve synchronous rotation, thereby driving the moving knife head 1 to rotate. The moving knife head 1 is mounted on the moving knife head mounting seat C'. Of course, an output shaft can also be provided at the center of the transmission wheel, and an output groove can be directly or indirectly provided on the moving knife head mounting seat. The rotation speed of the eccentric member 2 is higher than that of the transmission wheel 4. A driving gear 9 is provided on the eccentric member 2. The eccentric member 2 and the driving gear 9 are fixedly or integrally provided. The driving gear 9 is coaxially connected to the output shaft of the motor. The driving gear 9 is directly or indirectly engaged with the transmission wheel 4. When the driving gear is directly meshed with the transmission wheel, since the number of teeth of the transmission wheel is more than that of the driving gear, the rotation speed of the driving gear is higher than that of the transmission wheel. Since the eccentric member and the driving gear have the same speed, the rotation speed of the eccentric member will be greater than that of the transmission wheel. Of course, a speed reducer can also be used to make the rotation speed of the driving gear higher than that of the transmission wheel.

[0033] Specifically, the rotation centers of the drive disk 1 and the drive wheel 4 are coaxially arranged. The carrier A has a convex shaft A1, and the center of the convex shaft A1 has a shaft cavity A11. The center of the drive wheel 4 has a rotating shaft 10 that can be inserted into the shaft cavity A11. The center of the drive disk 1 has a shaft hole 12 for the convex shaft A1 to be inserted and forms a rotational fit with the convex shaft A1. The rotating shaft 10 can be provided on the drive wheel 4 or integrally provided at the center of the convex shaft A1. Or the drive disk can be rotatably arranged in a circular concave cavity on the carrier, or it can also be rotatably arranged in a segmented ring on the carrier. The output shaft one or the output groove one is synchronized with the moving cutter head mounting seat one C' to rotate, so that the drive wheel can drive the moving cutter head one to continuously rotate.

[0034] When a reciprocating swingable drive disk is provided in the above-mentioned Embodiment 2, the moving cutter head one and the annular moving cutter blade in Embodiment 1 can be installed together, or the moving cutter blade can be replaced with the moving cutter head one. When replacing, the corresponding moving cutter mounting seat is removed.

[0035] As Figure 10-12 As shown: In the specific Embodiment 3 of the present invention, multiple moving cutter heads two can also be installed. The driving structure of the moving cutter head two is as follows: The moving cutter transmission mechanism of the hair clipper includes a carrier A and a motor B. The carrier A is the body of the hair clipper, and also includes a drive wheel 4 linked to the output shaft of the motor and multiple output gears 6 linked to the drive wheel 4. Each output gear 6 is provided with an output shaft two 71 or an output groove two 72 that can drive the corresponding moving cutter head two to rotate. When an output shaft two 71 is provided at the center of the output gear two, the multiple moving cutter head mounting seats two C'' are directly or indirectly provided with output grooves two 72, and the output shaft two 71 is inserted into the corresponding output groove two 72 to achieve synchronous rotation, thereby driving the corresponding moving cutter head two to rotate. The moving cutter head two is installed on the moving cutter head mounting seat two C''; of course, an output groove two can also be provided on the output gear two, and an output shaft two is directly or indirectly provided on the moving cutter head mounting seat two.

[0036] Specifically, it further includes a driven gear 8 provided above the drive wheel 4. The driven gear 8 and the drive wheel 4 are connected by a linkage shaft D to achieve synchronous rotation. The output groove one 52 on the drive wheel is used for the linkage shaft D to be inserted. The multiple output gears 6 are directly or indirectly engaged with the driven gear 8, and the rotational speeds of each output gear 6 are the same. Of course, the multiple output gears can also be directly meshed with the drive wheel.

[0037] Specifically, the center of the driven gear 8 is also provided with an output shaft two 71 or an output groove two 72 that can drive the corresponding moving cutter head two to rotate, and the rotational speeds of the driven gear 8 and the output gear 6 are the same. The multiple output gears can drive the corresponding moving cutter head two to continuously rotate.

[0038] When the reciprocating swing transmission disk is provided in the above-mentioned Embodiment 3, the second moving cutter head and the annular moving cutter blade in the above-mentioned Embodiment 1 can be installed together, or the moving cutter blade can be replaced with the second moving cutter head. When replacing, the corresponding moving cutter mounting seat is removed.

[0039] The rotation speed of the above-mentioned eccentric member 2 is higher than that of the output gear 6.

[0040] The above-mentioned carrier can be the body or the head of the hair clipper.

[0041] It should be noted that in the present utility model, the descriptions such as "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, the meanings of "several" and "multiple" are at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0042] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Claims

1. A movable blade transmission mechanism of a hair clipper, characterized in that: The invention comprises a transmission disc (1) for rotating and mounted on a carrier (A), and an eccentric member (2) linked to an output shaft of a motor (B); the eccentric member (2) is inserted into a slide groove (11) on the transmission disc (1), thereby driving the transmission disc (1) to swing back and forth around its rotation center; and the transmission disc (1) is also provided with a plurality of transmission shafts (3) capable of driving a movable blade to swing back and forth.

2. The movable blade transmission mechanism of the hair clippers according to claim 1, characterized in that: The carrier (A) is the body of the hair clipper, and also includes a transmission wheel (4) linked to the output shaft of the motor. An output shaft (51) or an output slot (52) capable of transmitting rotation to a movable cutter head is also provided at the center of the transmission wheel (4).

3. The movable blade transmission mechanism of the hair clippers according to claim 2, characterized in that: The rotation speed of the eccentric piece (2) is higher than that of the transmission wheel (4).

4. The movable blade transmission mechanism of the hair clippers according to claim 1, characterized in that: The carrier (A) is the body of the hair clipper, and further comprises a transmission wheel (4) linked to the output shaft of the motor, and a plurality of output gears (6) linked to the transmission wheel (4), wherein the center of each output gear (6) is provided with an output shaft (71) or an output slot (72) capable of transmitting the rotation of each automatic cutter head (71).

5. The movable blade transmission mechanism of the hair clippers according to claim 4, characterized in that: It also includes a driven gear (8) disposed above the transmission wheel (4), the driven gear (8) rotating synchronously with the transmission wheel (4), a plurality of output gears (6) directly or indirectly meshing with the driven gear (8), and the output gears (6) rotating at the same speed.

6. The movable blade transmission mechanism of the hair clippers according to claim 5, characterized in that: The center of the driven gear (8) is also provided with an output shaft (71) or an output groove (72) capable of transmitting the rotation of the corresponding movable cutter head (6). The driven gear (8) and the output gear (6) have the same rotation speed.

7. The movable blade transmission mechanism of the hair clippers according to claim 4, characterized in that: The rotation speed of the eccentric member (2) is higher than that of the output gear (6).

8. The movable blade transmission mechanism of a hair clipper according to any one of claims 2 to 7, characterized in that: The eccentric member (2) is provided with a driving gear (9), the driving gear (9) is coaxially connected to the output shaft of the motor, the driving gear (9) is directly or indirectly engaged with the transmission wheel (4), and the driving gear (9) has a higher rotation speed than the transmission wheel (4).

9. A movable blade transmission mechanism of a hair clipper according to any one of claims 2 to 7, characterized in that: The rotation centers of the transmission disc (1) and the transmission wheel (4) are coaxially arranged.

10. The movable blade transmission mechanism of the hair clippers according to claim 9, characterized in that: The carrier (A) has a convex shaft (A1), the center of the convex shaft (A1) has an axial cavity (A11), the center of the transmission wheel (4) has a rotating shaft (10) rotatably inserted in the axial cavity (A11), and the center of the transmission disc (1) has an axial hole (12) for inserting the convex shaft (A1) and forms a rotational fit with the convex shaft (A1).

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