Hair trimmer
By introducing an automatic adjustment device into the hair trimmer, the PCB motherboard controls the movement of the push rod bracket and guide comb assembly, the problem of inflexible adjustment of the existing hair trimmer is solved, and multi-stage adjustment and convenience of use is achieved, while reducing the speed of reduction of production costs.
Patent Information
- Application Number
- CN202421140614.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Existing hair trimmers cannot flexibly adjust according to the length of the hair or beard, and the adjustment of the knife is unstable, resulting in inconvenient use and cumbersome operation.
A hair trimmer including a guide comb assembly, push rod bracket, a cutting head assembly and an automatic adjustment device was designed. The front and back reciprocating movement of the push rod bracket and the front and back rotation of the guide comb assembly were controlled through the PCB motherboard to achieve automatic adjustment function to avoid Misoperation and hair enters the inside of the knife head.
The multi-stage adjustment function of the hair trimmer is realized, which improves the convenience of use, prevents hair from entering the inside of the cutting head and damages parts, and reduces production costs.
Smart Images
Figure CN222270380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of daily necessities, in particular to a hair trimmer. Background Art
[0002] The trimming length of hair trimmers currently on the market is fixed and cannot be flexibly adjusted according to the length of hair or beard. It is difficult to control the strength, and it is difficult for consumers to adjust to the desired scale. In addition, the moving blade of the hair trimmer has a problem of retreating when adjusted to the top, and the position of the moving blade is unstable, which affects the length of hair cut. This leads to the need for users to equip hair trimmers with multiple functions, which can easily cause messy placement and confusion, and the operation is cumbersome and inconvenient to use. Utility Model Content
[0003] The technical problem to be solved by the utility model is to solve the problem that the existing hair trimmer cannot be flexibly adjusted according to the length of hair or beard.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A hair trimmer comprises a guide comb assembly, a push rod bracket, a cutter head assembly, and a detachably connected upper shell and a machine shell, wherein the cutter head assembly is arranged at the front end of the upper shell, a first driving motor for driving the cutter head assembly is arranged in the upper shell, an inner bracket seat, an automatic adjustment device and a PCB main board arranged in the inner bracket seat are arranged in the machine shell, the cutter head assembly is arranged in the guide comb assembly, the guide comb assembly is connected to the push rod bracket, the push rod bracket is connected to the automatic adjustment device, the first driving motor and the automatic adjustment device are respectively connected to the PCB main board; the PCB main board controls the automatic adjustment device to make the push rod bracket reciprocate back and forth, and at the same time makes the guide comb assembly connected to the push rod bracket rotate and move back and forth.
[0006] Among them, the automatic adjustment device includes a driving bracket, and a second driving motor, a transmission assembly and a movable nut assembly arranged in the driving bracket, the second driving motor is connected to the transmission assembly, the transmission assembly is connected to the movable nut assembly, and the second driving motor drives the transmission assembly to drive the movable nut assembly to move forward and backward.
[0007] Wherein, the transmission assembly includes a first gear shaft, a second gear shaft, a first transmission gear, a second transmission gear, a third transmission gear, a fourth transmission gear and a counting wheel component, the counting wheel component, the first transmission gear and the second transmission gear are arranged on the first gear shaft, and the third transmission gear and the fourth transmission gear are arranged on the second gear shaft; the first transmission gear is connected to the gear shaft of the second drive motor, the first transmission gear and the third transmission gear are meshed with each other, the second transmission gear and the fourth transmission gear are meshed with each other, and the fourth transmission gear is connected to the moving nut assembly.
[0008] Among them, the movable nut assembly includes a screw, a movable nut, a screw gear, a movable fixing frame, and a movable terminal arranged on the movable fixing frame, the screw is provided with a partial thread, the screw gear is arranged on the screw, the screw gear and the fourth transmission gear are meshed with each other, the movable nut is located at the partial thread of the screw, and the movable fixing frame is arranged on the movable nut.
[0009] Among them, the push rod bracket is provided with a connecting column and a soft sleeve mounted on the connecting column, the top of the connecting column is provided with a positioning hole, the movable nut is provided with a positioning column, and the positioning column is inserted into the positioning hole, so that the movable nut moves and drives the push rod bracket to move at the same time; the soft sleeve is set on the push rod bracket through a fastener.
[0010] Among them, the guide comb assembly includes a guide comb and a guide comb bracket, one end of the guide comb is connected to one end of the guide comb bracket through a rotating shaft, the other end of the guide comb is engaged with the other end of the guide comb bracket, the other end of the guide comb bracket is provided with a movable groove, connecting plates are provided on both sides of the push rod bracket, the connecting plates are provided with a convex column, the movable groove is connected to the convex column, so that the convex column is located in the movable groove and moves back and forth, and at the same time, the guide comb and the guide comb bracket rotate back and forth around the rotating shaft.
[0011] In which, the cutter head assembly includes a fixed blade, a fixed blade fixing seat, a movable blade, a double-headed spring member and a connecting member, the fixed blade is detachably connected to the fixed blade fixing seat, the fixed blade fixing seat is provided with a through hole for the rotating shaft member to pass through, the head of the double-headed spring member is passed through the movable blade and presses the movable blade above the fixed blade, and the movable blade and the fixed blade are relatively slidably matched; the double-headed spring member is provided with a supporting portion, and the supporting portion is buckled on the fixed blade; the fixed blade fixing seat is provided with an opening, and the back of the movable blade is provided with a groove, one end of the connecting member passes through the opening and is connected to the groove, and the other end is connected to the output shaft of the first drive motor.
[0012] Wherein, a battery is arranged in the accommodating cavity of the inner bracket seat, and the battery is connected to the PCB mainboard.
[0013] The PCB main board is provided with a magnetron, a digital tube, an adjustment button, a power switch and a charging interface, and the counting wheel is provided with a magnet, which is connected to the magnetron.
[0014] Wherein, the housing is provided with a digital display screen, an adjustment button component, a switch button component and an opening, the adjustment button component is connected to the adjustment key, the switch button component is connected to the power switch, and the charging interface is located at the opening.
[0015] The beneficial effects of the utility model are as follows: in the hair trimmer provided by the utility model, the cutter head assembly is arranged in the guide comb assembly, the cutter head assembly is connected to the first driving motor, the guide comb assembly is connected to the push rod bracket, the push rod bracket is connected to the automatic adjustment device, the first driving motor and the automatic adjustment device are respectively connected to the PCB main board; the PCB main board controls the automatic adjustment device to make the push rod bracket reciprocate back and forth, and at the same time, the guide comb assembly connected to the push rod bracket rotates back and forth to play the role of automatically adjusting the guide comb, so that different lengths of hair can be retained according to different needs of users for flexible and automatic adjustment, which can not only realize the multi-gear adjustment function of the hair trimmer, but also prevent misoperation from changing the gear position and prevent hair from entering the cutter head and damaging parts, the operation is simple, the use is more convenient, and the production cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure is a schematic diagram of the exploded structure of the hair trimmer provided by the embodiment of the utility model.
[0017] Figure 2 It is a partial structural schematic diagram of a hair trimmer provided by an embodiment of the utility model.
[0018] Figure 3 It is a structural schematic diagram of an automatic adjustment device for a hair trimmer provided by an embodiment of the utility model.
[0019] Figure 4 It is a structural schematic diagram of a transmission assembly of a hair trimmer provided by an embodiment of the utility model.
[0020] Figure 5 It is a structural schematic diagram of a movable nut assembly of a hair trimmer provided by an embodiment of the utility model.
[0021] Figure 6 It is a schematic structural diagram of a push rod support of a hair trimmer provided by an embodiment of the utility model.
[0022] Figure 7 It is a structural schematic diagram of a guide comb assembly of a hair trimmer provided by an embodiment of the utility model.
[0023] Figure 8 It is a structural schematic diagram of a cutter head assembly of a hair trimmer provided by an embodiment of the utility model.
[0024] Fig. 9 It is a structural schematic diagram of a housing of a hair trimmer provided by an embodiment of the utility model.
[0025] Fig.10 It is a schematic diagram of a hair trimmer provided by an embodiment of the utility model. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0027] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.
[0028] See also Figures 1 to 10The utility model provides a hair trimmer 100, comprising a guide comb assembly 10, a push rod bracket 20, a cutter head assembly 30, and a detachably connected upper shell 40 and a machine shell 50, wherein the cutter head assembly 30 is arranged at the front end of the upper shell 40, and a first driving motor 41 for driving the cutter head assembly 30 to work is arranged in the upper shell 40, an inner bracket seat 60 is arranged in the machine shell 50, and an automatic adjustment device 70 and a PCB main board 80 are arranged in the accommodating cavity of the inner bracket seat 60, the cutter head assembly 30 is placed in the guide comb assembly 10, the guide comb assembly 10 is connected to the push rod bracket 20, the push rod bracket 20 is connected to the automatic adjustment device 70, the first driving motor 41 and the automatic The adjusting device 70 is connected to the PCB main board 80 respectively; the PCB main board 80 controls the automatic adjusting device 70 to make the push rod bracket 20 reciprocate back and forth, and at the same time, the guide comb assembly 10 connected to the push rod bracket 20 rotates back and forth; therefore, the PCB main board 80 controls the automatic adjusting device 70 to make the push rod bracket 20 reciprocate back and forth, and at the same time, the guide comb assembly 10 connected to the push rod bracket 20 rotates back and forth to automatically adjust the guide comb, so that different lengths of hair can be retained according to different needs of users for flexible and automatic adjustment, which can not only realize the multi-speed adjustment function of the hair trimmer, but also prevent misoperation from changing the gear position and prevent hair from entering the inside of the cutter head and damaging parts.
[0029] In an embodiment of the utility model, the automatic adjustment device 70 includes a driving bracket 71, and a second driving motor 72, a transmission assembly 73 and a movable nut assembly 74 arranged in the driving bracket 71, the second driving motor 72 is connected to the transmission assembly 73, the transmission assembly 73 is connected to the movable nut assembly 74, the second driving motor 72 drives the transmission assembly 73 to drive the movable nut assembly 74 to move forward and backward, the driving bracket 71 is provided with a first mounting groove 75, a second mounting groove 76 and a third mounting groove 77, the first mounting groove 75 is provided with a cover plate 78, the transmission assembly 73 is placed in the first mounting groove 75, the second driving motor 72 is placed in the second mounting groove 76, and the movable nut assembly 74 is placed in the third mounting groove 77.
[0030] In the embodiment of the present utility model, please refer to Figure 4The transmission assembly 73 includes a first gear shaft 731, a second gear shaft 732, a first transmission gear 733, a second transmission gear 734, a third transmission gear 735, a fourth transmission gear 736 and a counting wheel 737. The counting wheel 737, the first transmission gear 733 and the second transmission gear 734 are arranged on the first gear shaft 731, and the third transmission gear 735 and the fourth transmission gear 736 are arranged on the second gear shaft 732; the first transmission gear 733 is connected to the gear shaft of the second driving motor 72, the first transmission gear 733 and the third transmission gear 735 are meshed with each other, the second transmission gear 734 and the fourth transmission gear 736 are meshed with each other, and the fourth transmission gear 736 is connected to the moving nut assembly 74.
[0031] In the embodiment of the present utility model, please refer to Figure 5 The movable nut assembly 74 includes a screw rod 741, a movable nut 742, a screw gear 743, a movable fixing frame 744, and a plurality of movable terminals 745 arranged on the movable fixing frame 744. The screw rod 741 is provided with a partial thread 746. The screw gear 743 is arranged on the screw rod 741. The screw gear 743 and the fourth transmission gear 736 are meshed with each other. The movable nut 742 is located at the partial thread 746 of the screw rod 741. The movable fixing frame 744 is arranged on the movable nut 742.
[0032] In the embodiment of the present utility model, please refer to Figure 6 The push rod bracket 20 is provided with a connecting column 21 and a soft cover 22 sleeved on the connecting column 21. The top of the connecting column 21 is provided with a positioning hole 23. The movable nut 742 is provided with a positioning column 747. The positioning column 747 is inserted into the positioning hole 23, so that the movable nut 742 moves and drives the push rod bracket 20 to move at the same time. The soft cover 22 is set on the push rod bracket 20 through fasteners.
[0033] In the embodiment of the present utility model, please refer to Figure 7 The guide comb assembly 10 includes a guide comb 11 and a guide comb bracket 12, one end of the guide comb 11 is connected to one end of the guide comb bracket 12 through a rotating shaft 13, and the other end of the guide comb 11 is engaged with the other end of the guide comb bracket 12, the cutter head assembly 30 is located between the guide comb 11 and the guide comb bracket 12, the other end of the guide comb bracket 12 is provided with a movable groove 14, connecting plates 24 are provided on both sides of the push rod bracket 20, and the connecting plates 24 are provided with a convex column 25, and the movable groove 14 is connected to the convex column 25, so that the convex column 25 is located in the movable groove 14 and moves back and forth, and at the same time, the guide comb 11 and the guide comb bracket 12 rotate and move back and forth around the rotating shaft 13.
[0034] In the embodiment of the present utility model, please refer to Figure 8 The cutter head assembly 30 includes a fixed blade 31, a fixed blade fixing seat 32, a movable blade 33, a double-headed spring member 34 and a connecting member 35. The fixed blade 31 is detachably connected to the fixed blade fixing seat 32. The fixed blade fixing seat 32 is provided with a through hole 36 for the rotating shaft member 13 to pass through. After the rotating shaft member 13 passes through the through hole 36, the guide comb bracket 12 and the guide comb 11 are connected to the rotating shaft member 13, so that the cutter head assembly 30 is placed between the guide comb bracket 12 and the guide comb 11; the head of the double-headed spring member 34 is passed through the movable blade 33 and the movable blade 33 is pressed above the fixed blade 31. The blade 33 is relatively slidably matched with the fixed blade 31; a support portion 37 is provided on the double-headed spring member 34, and the support portion 37 is buckled on the fixed blade 31; the fixed blade fixing seat 32 is provided with an opening 38, and a groove 39 is provided on the back of the movable blade 32, one end of the connecting member 35 passes through the opening 38 and is connected to the groove 39, and the other end is connected to the output shaft of the first driving motor 41, and arc-shaped convex plates 381 are provided on the two edges of the opening 38, and an arc-shaped groove 42 adapted to the arc-shaped convex plate 381 is provided at the front end of the upper shell 40, and the arc-shaped convex plate 381 is placed in the arc-shaped groove 42 to prevent the fixed blade fixing seat 32 from being dislocated when it moves.
[0035] In the embodiment of the utility model, a battery 61 is disposed in the accommodating cavity of the inner bracket seat 60 , and the battery 61 is connected to the PCB main board 80 .
[0036] In an embodiment of the utility model, the PCB main board 80 is provided with a magnetron 81, a digital tube 82, an adjustment button 83, a power switch 84 and a charging interface 85, and the counting wheel 737 is provided with a magnet 738. The magnet 738 and the magnetron 81 generate signals through induction to control the start and stop of the second drive motor 72 to control the movement or stop of the movable nut 742.
[0037] In the embodiment of the present utility model, please refer to Fig. 9The housing 50 is provided with a digital display screen 51, an adjustment button member 52, a switch button member 53 and an opening 54, the adjustment button member 52 is connected to the adjustment button 83, the adjustment button 83 is used to control the guide comb assembly 10 to rotate forward or backward, the switch button member 53 is connected to the power switch 84, and the charging interface 85 is located at the opening 54 for easy charging; the housing 50 is provided with a limiting slot 57, the push rod bracket 20 is arranged on the outer surface of the housing 50, the outer surface of the housing 50 is provided with a hook 55 and a limiting column 56, the push rod bracket 20 is provided with a first slot 26 and a second slot 27, the inner wall of the first slot 26 is provided with a guide column 28, the limiting column 56 is located in the first slot 26, and a compression spring 29 is provided between the limiting column 56 and the guide column 28; the hook 55 is connected to the second slot 27, and the hook 55 can move back and forth in the second slot 27 to fix the push rod bracket 20.
[0038] The working principle of the hair trimmer provided by the utility model is as follows: when in use, the gear shaft of the second driving motor drives the first transmission gear, the second transmission gear, the third transmission gear and the fourth transmission gear of the transmission assembly to operate, the fourth transmission gear cooperates with the screw gear to drive the screw to rotate, so that the moving nut moves on the screw toward the screw gear side, the movement of the moving nut drives the moving terminal on the moving fixing frame to move, the moving terminal contacts with the PCB main board to limit the movable area of the moving nut, plays a role in limiting and recording the position information of the moving nut, and at the same time makes the push rod bracket connected with the moving nut move forward or backward, and prompts the guide comb connected with the push rod bracket and the guide comb bracket assembly to rotate forward or backward around the rotating shaft; thereby, the hair of different lengths can be retained according to different needs of users for flexible and automatic adjustment, and the multi-gear adjustment function of the hair trimmer can be realized, not only the adjustment efficiency can be improved, but also the gear position can be changed due to misoperation and the hair can be prevented from entering the inside of the cutter head to damage the parts.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A hair trimmer, characterized in that: It comprises a guide comb assembly, a push rod bracket, a cutter head assembly, and a detachably connected upper shell and a machine shell, wherein the cutter head assembly is arranged at the front end of the upper shell, a first driving motor for driving the cutter head assembly is arranged in the upper shell, an inner bracket seat, an automatic adjustment device and a PCB main board arranged in the inner bracket seat are arranged in the machine shell, the cutter head assembly is arranged in the guide comb assembly, the guide comb assembly is connected to the push rod bracket, the push rod bracket is connected to the automatic adjustment device, and the first driving motor and the automatic adjustment device are respectively connected to the PCB main board; The PCB main board controls the automatic adjustment device to make the push rod bracket reciprocate forward and backward, and at the same time makes the guide comb assembly connected to the push rod bracket rotate and move forward and backward.
2. The hair trimmer according to claim 1, characterized in that The automatic adjustment device includes a driving bracket, and a second driving motor, a transmission assembly and a moving nut assembly arranged in the driving bracket, the second driving motor is connected to the transmission assembly, the transmission assembly is connected to the moving nut assembly, and the second driving motor drives the transmission assembly to drive the moving nut assembly to move forward and backward.
3. The hair trimmer according to claim 2, characterized in that The transmission assembly includes a first gear shaft, a second gear shaft, a first transmission gear, a second transmission gear, a third transmission gear, a fourth transmission gear and a counting wheel. The counting wheel, the first transmission gear and the second transmission gear are arranged on the first gear shaft, and the third transmission gear and the fourth transmission gear are arranged on the second gear shaft; the first transmission gear is connected to the gear shaft of the second drive motor, the first transmission gear and the third transmission gear are meshed with each other, the second transmission gear and the fourth transmission gear are meshed with each other, and the fourth transmission gear is connected to the moving nut assembly.
4. The hair trimmer according to claim 3, characterized in that The movable nut assembly includes a screw, a movable nut, a screw gear, a movable fixing frame, and a movable terminal arranged on the movable fixing frame. The screw is provided with a partial thread, the screw gear is arranged on the screw, the screw gear and the fourth transmission gear are meshed with each other, the movable nut is located at the partial thread of the screw, and the movable fixing frame is arranged on the movable nut.
5. The hair trimmer according to claim 4, characterized in that The push rod bracket is provided with a connecting column and a soft sleeve sleeved on the connecting column, the top of the connecting column is provided with a positioning hole, the movable nut is provided with a positioning column, and the positioning column is inserted into the positioning hole, so that the movable nut moves and drives the push rod bracket to move at the same time; The soft sleeve is arranged on the push rod bracket through a fastener.
6. The hair trimmer according to claim 1, characterized in that The guide comb assembly includes a guide comb and a guide comb bracket, one end of the guide comb is connected to one end of the guide comb bracket via a rotating shaft, the other end of the guide comb is engaged with the other end of the guide comb bracket, the other end of the guide comb bracket is provided with a movable groove, connecting plates are provided on both sides of the push rod bracket, the connecting plates are provided with a convex column, the movable groove is connected to the convex column, so that the convex column is located in the movable groove and moves back and forth, and at the same time, the guide comb and the guide comb bracket rotate back and forth around the rotating shaft.
7. The hair trimmer according to claim 6, characterized in that The cutter head assembly comprises a fixed blade, a fixed blade fixing seat, a movable blade, a double-headed spring member and a connecting member, the fixed blade is detachably connected to the fixed blade fixing seat, the fixed blade fixing seat is provided with a through hole for the rotating shaft member to pass through, the head of the double-headed spring member is passed through the movable blade and presses the movable blade above the fixed blade, and the movable blade and the fixed blade are relatively slidably matched; the double-headed spring member is provided with a supporting portion, and the supporting portion is buckled on the fixed blade; the fixed blade fixing seat is provided with an opening, and the back of the movable blade is provided with a groove, one end of the connecting member passes through the opening and is connected to the groove, and the other end is connected to the output shaft of the first drive motor.
8. The hair trimmer according to claim 1, characterized in that The accommodating cavity of the inner bracket seat is provided with a battery, and the battery is connected to the PCB main board.
9. The hair trimmer according to claim 3, characterized in that: The PCB main board is provided with a magnetron, a digital tube, an adjustment button, a power switch and a charging interface, and the counting wheel is provided with a magnet, and the magnet is connected to the magnetron.
10. The hair trimmer according to claim 9, characterized in that The housing is provided with a digital display screen, an adjustment button component, a switch button component and an opening, the adjustment button component is connected to the adjustment key, the switch button component is connected to the power switch, and the charging interface is located at the opening.