Combined hair trimmer with multiple groups of reciprocating tool bits

Abstract

The utility model relates to a multi-group reciprocating tool bit combined hair trimmer, so that the occupied space of the tool bit combination is reduced. A hair trimmer with multiple reciprocating tool bit combinations comprises a tool bit seat, the multiple reciprocating tool bit combinations, a swing connecting rod combination, a swing rod seat and a driving part. The reciprocating tool bit combinations are arranged at intervals in the circumferential direction of the tool bit seat, and each reciprocating tool bit combination comprises a fixed cutter blade and a movable cutter blade; the swing connecting rod combination comprises a swing disc and a plurality of movable cutter swing rods hinged to the swing disc, and the other end of each movable cutter swing rod is movably connected with a movable cutter blade of one reciprocating cutter head combination. The swinging connecting rod combination is arranged in the accommodating cavity; an eccentric shaft is arranged on the driving piece; when the driving part works, the eccentric shaft rotates to drive the swinging disc to deflect; in the deflection process of the swing disc, the swing disc drives the movable cutter swing rods to reciprocate from inside to outside, and the movable cutter swing rods drive the movable cutter blades corresponding to the movable cutter swing rods to transversely reciprocate relative to the fixed cutter blades.

Description

Technical Field

[0001] This utility model relates to a hair trimmer with multiple sets of reciprocating blades. Background Technology

[0002] The hair trimmer head includes a fixed blade and a moving blade mounted on a head holder. The moving blade has a non-working state and a working state. When the moving blade is in the non-working state, hair can pass through the fixed blade and enter the shaving channel of the hair trimmer head assembly. When the moving blade is in the working state, the moving blade cuts the hair that has entered the shaving channel. This hair can be beard, hair, etc.

[0003] The utility model patent application number 2024204766555, entitled "Hair Trimmer", discloses a fixed blade arranged in a circumferential direction and a moving blade arranged in a circumferential direction. This design results in the hair trimmer's blade head assembly occupying a large space. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hair trimmer with multiple sets of reciprocating blades, so as to reduce the space occupied by the blade assembly.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] A multi-head reciprocating hair trimmer, including:

[0007] The cutter head holder has a receiving cavity.

[0008] Multiple sets of reciprocating cutter head assemblies are arranged in the receiving cavity. Each set of reciprocating cutter head assemblies is spaced apart along the circumference of the cutter head seat. Each set of reciprocating cutter head assemblies includes a fixed cutter blade and a moving cutter blade.

[0009] The swing linkage assembly includes a swing disk and multiple moving blade swing rods hinged to the swing disk, with the other end of one of the moving blade swing rods being movably connected to a set of moving blades of a reciprocating cutter head assembly.

[0010] A swing rod seat is provided with a receiving cavity, and the swing connecting rod assembly is disposed in the receiving cavity;

[0011] A driving component, on which an eccentric shaft is provided, the eccentric shaft being connected to the swing disk;

[0012] When the driving component is working, the eccentric shaft rotates and drives the swing disk to swing. During the swing of the swing disk, the swing disk drives the moving tool swing rod to form a reciprocating motion from the inside to the outside. The moving tool swing rod drives the corresponding moving tool blade to reciprocate laterally relative to the fixed tool blade.

[0013] Furthermore, the moving blade swing rod includes a first swing rod segment and an upwardly extending second swing rod segment. The first swing rod segment is hinged to the swing disk, and the second swing rod segment is movably connected to a set of reciprocating cutter heads and moving blades.

[0014] Furthermore, the swing rod seat is provided with a plurality of first limiting channels corresponding to the moving knife swing rod; wherein, the cavity wall of the accommodating cavity is provided with a plurality of grooves at intervals along the circumference, and the grooves are the first limiting channels; or, the cavity wall of the accommodating cavity is provided with a plurality of sets of limiting members at intervals along the circumference, the limiting members including two limiting blocks at intervals, and the two limiting blocks enclose each other to form a first limiting channel.

[0015] Furthermore, it also includes a swing arm damping and limiting sleeve, which is disposed in the accommodating cavity and connected to the swing arm seat. The swing arm damping and limiting sleeve is fitted around the swing disk, and the swing arm damping and limiting sleeve has a plurality of second limiting channels for the first swing arm segment to pass through and limit the first swing arm segment.

[0016] Furthermore, the movable blade is provided with a movable blade holder, the movable blade holder is provided with a swing groove, and the second swing rod section is provided with a swing protrusion, which is inserted into the swing groove; wherein, the fixed blade is provided with a plurality of hair inlet channels, and the movable blade is provided with a plurality of shaving channels. When the swing protrusion 323 is inserted into the swing groove, the swing protrusion pushes the movable blade to move laterally reciprocally relative to the fixed blade through the swing groove, so that the shaving channel corresponds to or is offset from one of the hair inlet channels.

[0017] Furthermore, it also includes an inner ring fixing seat and a fixed tool holder. The fixed tool holder is fixedly connected to the fixed tool blade. One end of the fixed tool holder is hinged to the inner ring fixing seat through a hinge joint, and the other end is slidably connected to the tool head seat. Moreover, the fixed tool holder can elastically return to its original position after being deflected by force.

[0018] Furthermore, it also includes a spring frame and a moving blade clamping spring. The bottom two sides of the spring frame are bent inward to form a support part. The moving blade clamping spring is clamped between the moving blade holder and the support part. The moving blade clamping spring pushes the moving blade against the fixed blade through the moving blade holder.

[0019] Furthermore, it also includes a floating spring for the cutter head, which is disposed in the receiving cavity of the cutter head seat and located at the bottom of the multiple sets of reciprocating cutter heads. The floating spring for the cutter head includes a spring holder body and a supporting spring that is raised and extends beyond the spring holder body; the supporting spring is in surface contact with the spring holder for support.

[0020] And / or, the top of the spring holder abuts against the fixed blade.

[0021] Furthermore, it also includes a cutter head positioning plate, which is disposed on and hinged to the hinge portion of the fixed cutter holder, and the cutter head seat is provided with a plurality of limiting slots for accommodating the cutter head positioning plate.

[0022] Furthermore, the eccentric shaft and the oscillating disk are connected by an eccentric shaft bearing;

[0023] Alternatively, the eccentric shaft and the swing disk are connected by a swing disk connecting rod, the swing disk connecting rod including a first swing disk connecting rod segment and an upwardly extending second swing disk connecting rod segment, the first swing disk connecting rod segment being connected to the eccentric shaft, and the second swing disk connecting rod segment being connected to the swing rod seat; wherein, the swing rod seat is provided with a limiting groove for the second swing disk connecting rod segment to pass through and for limiting the second swing disk connecting rod segment.

[0024] Compared with existing technologies, the above structural design has the following advantages:

[0025] In this design, to achieve simultaneous movement of multiple reciprocating blade combinations, the multi-reciprocating blade hair trimmer also includes a swing linkage assembly, a swing rod seat, and a drive component. When the drive component is working, the eccentric shaft rotates, driving the swing disk to oscillate. During the oscillation of the swing disk, the swing disk drives the moving blade swing rod to form a reciprocating motion from the inside out. The moving blade swing rod drives its corresponding moving blade to reciprocate laterally relative to the fixed blade. In other words, when the multi-reciprocating blade hair trimmer is equipped with the swing linkage assembly, swing rod seat, and drive component, the multiple reciprocating blade combinations can simultaneously trim hair at multiple locations on the human body, thereby improving the hair trimming effect of the multi-reciprocating blade hair trimmer. In addition, the oscillating disc drives the moving blade oscillating rod to form a reciprocating motion from the inside out, which allows the hair trimmer to be made smaller, the spacing between adjacent reciprocating blade combinations to be narrower, and the height difference between the inner and outer sides of the fixed blade and the moving blade to be greater, so as to better fit multiple parts and positions of the human body and further improve the hair trimming effect of the hair trimmer. Attached Figure Description

[0026] Figure 1 This is a perspective view of the multi-set reciprocating blade combination hair trimmer of this utility model.

[0027] Figure 2 yes Figure 1 A structural diagram from another perspective.

[0028] Figure 3 yes Figure 2 AA view.

[0029] Figure 4 yes Figure 1 An exploded view.

[0030] Figure 5 yes Figure 4 A magnified view of section A.

[0031] Figure 6 yes Figure 1 Another exploded view.

[0032] Figure 7 This is a perspective view of the floating spring of the cutter head in this utility model.

[0033] Figure 8 This is a perspective view of a set of reciprocating cutter head assemblies in this utility model.

[0034] Figure 9 yes Figure 8 A structural diagram from another perspective.

[0035] Figure 10 This is a perspective view of the fixed blade in this utility model.

[0036] Figure 11 This is a perspective view of the moving blade in this utility model.

[0037] Figure 12 This is a perspective view of the connection between the eccentric shaft and the swing disk in this utility model via the swing disk connecting rod.

[0038] Figure 13 yes Figure 12 Exploded view.

[0039] Figure 14 yes Figure 12 A three-dimensional view of the swing arm seat.

[0040] The figure shows: 1. Cutter head holder; 11. Receiving cavity; 12. Limiting groove; 13. Slide groove; 14. Through hole;

[0041] 2. Reciprocating blade assembly; 21. Moving blade; 211. Shaving head; 2111. Shaving blade; 212. Shaving groove; 22. Moving blade holder; 221. Swing groove; 23. Fixed blade; 231. Hair inlet; 232. Hair inlet groove; 24. Fixed blade holder; 241. Hinge; 25. Spring frame; 251. Support; 26. Moving blade clamping spring; 27. Mounting post; 28. Blade head positioning plate; 29. ​​Slider;

[0042] 3. Swing linkage assembly; 31. Swing disc; 32. Moving blade swing rod; 321. First swing rod segment; 322. Second swing rod segment; 323. Swing protrusion; 33. Swing rod shock absorber and limit sleeve; 331. Second limit channel;

[0043] 4. Swing rod seat; 41. Receiving cavity; 42. First limiting channel; 43. Limiting component; 431. Limiting block; 44. Limiting groove;

[0044] 5. Driving components; 51. Eccentric shaft;

[0045] 6. Inner ring fixing seat;

[0046] 7. Floating spring of the cutter head; 71. Spring holder body; 72. Supporting spring; 73. Connecting part;

[0047] 8. Swing disc connecting rod; 81. First swing disc connecting rod segment; 82. Second swing disc connecting rod segment;

[0048] 9. Cap; 91. Waist-shaped guide hole. Detailed Implementation

[0049] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0050] This utility model discloses a multi-set reciprocating blade combination hair trimmer, as shown in the following figures: Figure 1 This is a perspective view of the multi-set reciprocating blade combination hair trimmer of this utility model; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 yes Figure 2 AA view; Figure 4 yes Figure 1 An exploded view; Figure 5 yes Figure 4 Enlarged view of section A; Figure 6 yes Figure 1 Another exploded view; Figure 7 This is a perspective view of the floating spring of the cutter head in this utility model; Figure 8 This is a perspective view of a set of reciprocating cutter head assemblies in this utility model; Figure 9 yes Figure 8 A structural diagram from another perspective; Figure 10 This is a perspective view of the fixed blade in this utility model; Figure 11 This is a perspective view of the moving blade in this utility model; Figure 12 This is a perspective view of the connection between the eccentric shaft and the swing disk in this utility model via the swing disk connecting rod; Figure 13 yes Figure 12 Exploded view; Figure 14 yes Figure 12 A three-dimensional view of the swing arm seat. Example

[0051] A multi-set reciprocating blade hair trimmer includes: a blade head seat 1 with a receiving cavity 11; multiple sets of reciprocating blade assemblies 2, each set of reciprocating blade assemblies 2 being disposed within the receiving cavity 11, with each set of reciprocating blade assemblies 2 spaced apart circumferentially along the blade head seat 1, and each set of reciprocating blade assemblies 2 including a fixed blade 23 and a movable blade 21; and a swing linkage assembly 3, which includes a swing disk 31 and multiple movable blade swing rods 32 hinged to the swing disk 31, with the other end of one movable blade swing rod 32 flexibly connected to the movable blade 21 of one set of reciprocating blade assemblies 2. The system includes a moving connection; a swing rod seat 4, which has a receiving cavity 41, and a swing connecting rod assembly 3 disposed within the receiving cavity 41; a driving component 5, which has an eccentric shaft 51 connected to a swing disk 31; when the driving component 5 is working, the eccentric shaft 51 rotates to drive the swing disk 31 to swing; during the swinging process of the swing disk 31, the swing disk 31 drives the moving blade swing rod 32 to form a reciprocating motion from the inside to the outside within the limiting channel, and the moving blade swing rod 32 drives the corresponding moving blade 21 to reciprocate laterally relative to the fixed blade 23. The driving component 5 can be a rotary motor, or other structures, without specific limitations.

[0052] In this embodiment, the multi-set reciprocating blade hair trimmer includes multiple sets of reciprocating blade assemblies 2, which are disposed within the receiving cavity 11. Each set of reciprocating blade assemblies 2 is spaced apart circumferentially along the blade holder 1. Each set of reciprocating blade assemblies 2 includes a fixed blade 23 and a moving blade 21. Each set of reciprocating blade assemblies 2 can conform to one part of the skin, and the multiple sets of reciprocating blade assemblies 2 can conform to multiple parts of the skin. The multi-set reciprocating blade hair trimmer can conform to multiple parts and locations of the body to improve the hair trimming effect (in this embodiment, the hair is taken as a beard). Figure 1 , Figure 4 and Figure 6 The multi-set reciprocating blade hair trimmer includes twelve sets of reciprocating blades 2; of course, the reciprocating blades 2 can be any set of two, three or more sets, and the specific number is not limited, and can be selected according to the actual situation.

[0053] In this embodiment, to achieve simultaneous movement of multiple sets of reciprocating blade assembly 2, the multi-set reciprocating blade assembly hair trimmer also includes a swing linkage assembly 3, a swing rod seat 4, and a drive component 5. When the drive component 5 is working, the eccentric shaft 51 rotates to drive the swing disk 31 to swing. During the swinging process of the swing disk 31, the swing disk 31 drives the moving blade swing rod 32 to form a reciprocating motion from the inside out. The moving blade swing rod 32 drives the corresponding moving blade 21 to move laterally reciprocating relative to the fixed blade 23. That is to say, when the multi-set reciprocating blade assembly hair trimmer is equipped with the swing linkage assembly 3, the swing rod seat 4, and the drive component 5, the multiple sets of reciprocating blade assembly 2 can simultaneously conform to multiple parts and positions of the human body for hair trimming, thereby improving the hair trimming effect of the multi-set reciprocating blade assembly hair trimmer. In addition, the swing disc 31 drives the moving blade swing rod 32 to form a reciprocating motion from the inside to the outside, which makes the hair trimmer smaller in size, the interval between adjacent reciprocating blade assemblies 2 can be narrower, and the height difference between the inner and outer sides of the fixed blade 23 and the moving blade 21 can be larger, so as to better fit multiple parts and positions of the human body and further improve the hair trimming effect of the hair trimmer.

[0054] exist Figures 4 to 6 In this design, the moving tool swing rod 32 includes a first swing rod segment 321 and an upwardly extending second swing rod segment 322. The first swing rod segment 321 is hinged to the swing disk 31, and the second swing rod segment 322 is movably connected to the moving tool blade 21 of a set of reciprocating tool head assemblies 2. Specifically, the eccentric shaft 51 rotates to drive the swing disk 31 to swing. During the swinging process of the swing disk 31, the swing disk 31 drives the first swing rod segment 321 to form a reciprocating motion from the inside out, thereby driving the second swing rod segment 322 to form a reciprocating motion from the inside out, and then the second swing rod segment 322 drives the corresponding moving tool blade 21 to reciprocate laterally relative to the fixed tool blade 23.

[0055] exist Figure 4 and Figure 13In the middle, the swing rod seat 4 is provided with a number of first limiting channels 42 corresponding to the moving blade swing rod 32. The cavity wall of the receiving cavity 41 is provided with multiple sets of limiting members 43 at intervals along the circumference. The limiting member 43 includes two limiting blocks 431 arranged at intervals. The two limiting blocks 431 enclose each other to form the first limiting channel 42. Specifically, the first swing rod segment 321 is partially located in the first limiting channel 42 and can reciprocate along the first limiting channel 42. The first limiting channel 42 circumferentially limits the first swing rod segment 321 to prevent the first swing rod segment 321 from circumferentially swinging, thereby ensuring that the second swing rod segment 322 only performs lateral reciprocating movement, thereby ensuring that the moving blade 21 moves laterally reciprocating relative to the fixed blade 23, so as to ensure the hair trimming effect of the hair trimmer. Understandably, the first limiting channel 42 can also take other forms. For example, the cavity wall of the accommodating cavity 41 can form multiple grooves at intervals along the circumference, and the grooves are the first limiting channel 42. The specific form and structure of the first limiting channel 42 are not limited, as long as it can circumferentially limit the first swing rod segment 321 to prevent the first swing rod segment 321 from circumferentially deflecting.

[0056] exist Figures 4 to 6 The device also includes a swing arm damping and limiting sleeve 33, which is located inside the accommodating cavity 41 and connected to the swing arm seat 4. The swing arm damping and limiting sleeve 33 is fitted around the swing disk 31. The swing arm damping and limiting sleeve 33 has several second limiting channels 331 through which the first swing arm segment 321 passes and limits the first swing arm segment 321. Specifically, the second limiting channel 331 can be a slot with an open bottom or a through hole. The second limiting channel 331 allows the first swing arm segment 321 to swing to a certain extent. The two inner walls of the second limiting channel 331 in the circumference limit the first swing arm segment 321 after it swings to a certain extent, thereby limiting the swing range of the first swing arm segment 321. At least the inner wall of the top of the second limiting channel 331 can limit the vibration of the first swing arm segment 321 to ensure the smoothness of the reciprocating movement of the first swing arm segment 321.

[0057] exist Figure 8 and Figure 9 In the process, the movable blade 21 is provided with a movable blade holder 22, the movable blade holder 22 is provided with a swing groove 221, and the second swing rod section 322 is provided with a swing protrusion 323, which is inserted into the swing groove 221; wherein, the fixed blade 23 is provided with several hair inlet channels, and the movable blade 21 is provided with several shaving channels. When the swing protrusion 323 passes through the through hole 14 of the head seat 1 and is inserted into the swing groove 221, the swing protrusion 323 pushes the movable blade 21 to move laterally reciprocally relative to the fixed blade 23 through the swing groove 221, so that the shaving channel corresponds to or is offset from one of the hair inlet channels. Specifically, in Figure 10 and Figure 11In the middle, the fixed blade 23 is provided with a number of hair inlet 231 and a number of hair inlet grooves 232. The hair inlet grooves 232 are hair inlet channels, which are located between two adjacent hair inlet 231. The movable blade 21 is provided with a number of hair shaving 211 and a number of hair shaving grooves 212. The hair shaving grooves 212 are hair shaving channels, which are located between two adjacent hair shaving 211.

[0058] In this embodiment, the movable blade 21 has a non-working state and a working state. When the movable blade 21 is in the non-working state, at least part of the shaving groove 212 corresponds to the hair inlet channel, and hair on human skin can pass through the hair inlet channel and enter the shaving channel. When the movable blade 21 is in the working state, the shaving groove 212 and the hair inlet channel are misaligned to achieve the cooperation between the shaving groove 212 and the hair inlet channel to trim the hair.

[0059] Preferred, in Figure 11 In the middle, the hair-cutting tool 211 is provided with an inclined hair-cutting blade 2111, which is used to cut hair more sharply.

[0060] exist Figure 3 and Figure 4 The assembly also includes an inner ring fixing seat 6 and a fixed tool holder 24. The fixed tool holder 24 is fixedly connected to the fixed tool blade 23. One end of the fixed tool holder 24 is hinged to the inner ring fixing seat 6 through a hinge part 241, and the other end is slidably connected to the tool head seat 1. The fixed tool holder 24 can elastically return to its original position after being deflected by force. The inner ring fixing seat 6 is located in the middle of the multiple sets of reciprocating tool head assemblies 2 and is used to connect the tool head seat 1 and the fixed tool holder 24 to realize the installation and positioning of the fixed tool holder 24. The fixed tool holder 24 is fixedly connected to the fixed tool blade 23. The specific fixing method between the two is not limited and can be selected according to the actual situation. In addition, one end of the fixed blade holder 24 is slidably connected to the blade head seat 1. One of the fixed blade holder 24 and the blade head seat 1 is provided with a sliding groove 13, and the other is provided with a slider 29 corresponding to the sliding groove 13. This allows the fixed blade holder 24 to be deflected according to the structural characteristics of the human body when it comes into contact with human skin, so that the fixed blade 23 can fit more closely to the human skin. At the same time, the fixed blade holder 24 can elastically return to its original position, so that the fixed blade holder 24 can fit more closely to the human skin, thereby improving the hair trimming effect of the hair trimmer.

[0061] Preferred, in Figure 8 and Figure 9The device also includes a spring frame 25 and a moving blade clamping spring 26. The spring frame 25 is installed on the fixed blade holder 24. The bottom sides of the spring frame 25 are bent inward to form a support part 251. The moving blade clamping spring 26 is clamped between the moving blade holder 22 and the support part 251. The moving blade clamping spring 26 pushes the moving blade 21 to abut against the fixed blade 23 through the moving blade holder 22. In order to ensure the stability of the moving blade clamping spring 26, both the support part 251 and the moving blade holder 22 are provided with mounting posts 27 at the installation position of the moving blade clamping spring 26. The mounting posts 27 realize the installation positioning of the moving blade clamping spring 26. In addition, by setting the moving blade clamping spring 26, an upward elastic force is provided to the moving blade 21, so that the moving blade 21 can elastically abut against the fixed blade 23. The moving blade 21 has a degree of freedom to move away from the fixed blade 23, which reduces the wear between the fixed blade 23 and the moving blade 21 and improves the service life of the fixed blade 23 and the moving blade 21.

[0062] Preferred, in Figure 6 and Figure 7 The assembly also includes a floating spring 7 for the cutter head. The floating spring 7 is located in the receiving cavity 11 of the cutter head seat 1 and at the bottom of the multiple reciprocating cutter head assemblies 2. The floating spring 7 includes a spring frame body 71 and a supporting spring 72 that is raised and extends above the spring frame body 71. The supporting spring 72 is in surface contact with the spring frame 25 for support. In order to realize the up and down floating of the reciprocating cutter head assembly 2, and thus the up and down floating of the moving blade 21 and the fixed blade 23 of the reciprocating cutter head assembly 2, the multiple reciprocating cutter head assemblies 2 are provided with greater freedom and can easily fit body parts with large contour changes, such as the jaw. The cutter head seat 1 is provided with a mounting groove for accommodating the spring frame body 71. After the spring frame body 71 is placed in the mounting groove, the floating spring 7 for the cutter head is installed to the cutter head seat 1 through the connecting part 73.

[0063] Preferred, in Figure 8 and Figure 9 In the middle, the top of the spring frame 25 abuts against the fixed blade 23. The spring frame 25 and the fixed blade holder 24 cooperate to fix the fixed blade 23, which facilitates the installation and removal of the fixed blade 23.

[0064] Preferred, in Figure 8 and Figure 9 The device also includes a cutting head positioning piece 28, which is located at and hinged to the hinge portion 241 of the fixed tool holder 24. The cutting head seat 1 is provided with several limiting slots 12 for accommodating the cutting head positioning pieces 28. The cutting head positioning pieces 28 can be engaged in the limiting slots 12, so that the cutting head positioning pieces 28 are kept within the limiting slots 12, thereby ensuring that the position of the cutting head positioning pieces 28 remains unchanged. After the fixed tool holder 24 deflects at a certain angle, the cutting head positioning pieces 28 restrict the fixed tool holder 24 from further deflection, ensuring that the fixed tool holder 24 can elastically return to its original position after deflection.

[0065] exist Figure 4 In this configuration, the eccentric shaft 51 and the oscillating disk 31 are connected via an eccentric shaft bearing; the eccentric shaft 51 drives the oscillating disk 31 to rotate via the eccentric shaft bearing; understandably, the eccentric shaft 51 can also be connected to the oscillating disk 31 in other ways, for example: Figures 12 to 14 In the middle, the eccentric shaft 51 and the swing disk 31 are connected by the swing disk connecting rod 8. The swing disk connecting rod 8 includes a first swing disk connecting rod section 81 and an upwardly extending second swing disk connecting rod section 82. The first swing disk connecting rod section 81 is connected to the eccentric shaft 51, and the second swing disk connecting rod section 82 is connected to the swing rod seat 4. The swing rod seat 4 is provided with a limiting groove 44 for the second swing disk connecting rod section 82 to pass through and for limiting the second swing disk connecting rod section 82. When the drive unit 5 is working, the eccentric shaft 51 drives the swing disk 31 to reciprocate through the swing disk connecting rod 8; during the process of the swing disk connecting rod 8 driving the swing disk 31 to reciprocate, the swing disk 31 drives all moving blades 21 to reciprocate relative to their corresponding fixed blades 23; in addition, the swing rod seat 4 is provided with a limiting groove 44 for the second swing disk connecting rod section 82 to pass through and to limit the second swing disk connecting rod section 82. The setting of the limiting groove 44 limits the swing range of the second swing disk connecting rod section 82, thereby limiting the swing range of the swing disk 31.

[0066] Preferred, in Figure 12 and Figure 13 The device also includes a cover 9, which is installed on the swing rod seat 4. The cover 9 has several waist-shaped guide holes 91 through which the second swing rod segment 322 can pass. The second swing rod segment 322 can reciprocate within the waist-shaped guide holes 91.

[0067] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the claims. This utility model is not limited to the above embodiments, and all variations made within the scope of the independent claims of this utility model are within its protection scope.

Claims

1. A multi-set reciprocating blade hair trimmer, characterized in that... include: The cutter head seat (1) has a receiving cavity (11). Multiple sets of reciprocating cutter head assemblies (2) are located in the receiving cavity (11). Each set of reciprocating cutter head assemblies (2) is arranged circumferentially along the cutter head seat (1). Each set of reciprocating cutter head assemblies (2) includes a fixed cutter blade (23) and a moving cutter blade (21). The swing linkage assembly (3) includes a swing disk (31) and a plurality of moving blade swing rods (32) hinged to the swing disk (31). The other end of one of the moving blade swing rods (32) is movably connected to the moving blade (21) of a set of reciprocating cutter head assemblies (2). A swing rod seat (4) is provided with a receiving cavity (41), and the swing connecting rod assembly (3) is located in the receiving cavity (41); The driving component (5) is provided with an eccentric shaft (51), which is connected to the swing disk (31). When the drive unit (5) is working, the eccentric shaft (51) rotates and drives the swing disk (31) to swing. During the swing of the swing disk (31), the swing disk (31) drives the moving knife swing rod (32) to form a reciprocating motion from the inside to the outside. The moving knife swing rod (32) drives the corresponding moving knife blade (21) to reciprocate laterally relative to the fixed knife blade (23).

2. The multi-set reciprocating blade combination hair trimmer according to claim 1, characterized in that, The moving blade swing rod (32) includes a first swing rod segment (321) and an upwardly extending second swing rod segment (322). The first swing rod segment (321) is hinged to the swing disk (31), and the second swing rod segment (322) is movably connected to the moving blade (21) of a set of reciprocating cutter head assemblies (2).

3. The multi-set reciprocating blade combination hair trimmer according to claim 2, characterized in that, The swing rod seat (4) is provided with a plurality of first limiting channels (42) corresponding to the moving knife swing rod (32); The cavity wall of the accommodating cavity (41) is formed with multiple grooves at intervals along the circumferential direction, and the grooves are the first limiting channels (42). Alternatively, the cavity wall of the accommodating cavity (41) is provided with multiple sets of limiting members (43) spaced apart along the circumference. The limiting member (43) includes two limiting blocks (431) spaced apart, and the two limiting blocks (431) enclose a first limiting channel (42).

4. The multi-set reciprocating blade combination hair trimmer according to claim 2 or 3, characterized in that, It also includes a swing arm damping and limiting sleeve (33), which is located in the accommodating cavity (41) and connected to the swing arm seat (4). The swing arm damping and limiting sleeve (33) is fitted around the swing disk (31). The swing arm damping and limiting sleeve (33) has several second limiting channels (331) for the first swing arm segment (321) to pass through and for limiting the first swing arm segment (321).

5. The multi-set reciprocating blade combination hair trimmer according to claim 4, characterized in that, The moving blade (21) is provided with a moving blade holder (22), the moving blade holder (22) is provided with a swing groove (221), the second swing rod section (322) is provided with a swing protrusion (323), and the swing protrusion (323) is inserted into the swing groove (221). The fixed blade (23) has several hair inlet channels, and the movable blade (21) has several hair shaving channels. When the swing protrusion (323) is inserted into the swing groove (221), the swing protrusion (323) pushes the movable blade (21) to move laterally and reciprocally relative to the fixed blade (23) through the swing groove (221), so that the hair shaving channel corresponds to or is offset from one of the hair inlet channels.

6. The multi-set reciprocating blade combination hair trimmer according to claim 5, characterized in that, It also includes an inner ring fixing seat (6) and a fixed blade holder (24). The fixed blade holder (24) is fixedly connected to the fixed blade (23). One end of the fixed blade holder (24) is hinged to the inner ring fixing seat (6) through a hinge part (241), and the other end is slidably connected to the blade head seat (1). The fixed blade holder (24) can be elastically reset after being deflected by force.

7. The multi-set reciprocating blade combination hair trimmer according to claim 6, characterized in that, It also includes a spring frame (25) and a moving blade clamping spring (26). The bottom sides of the spring frame (25) are bent inward to form a support part (251). The moving blade clamping spring (26) is clamped between the moving blade holder (22) and the support part (251). The moving blade clamping spring (26) pushes the moving blade (21) to abut against the fixed blade (23) through the moving blade holder (22).

8. The multi-set reciprocating blade combination hair trimmer according to claim 7, characterized in that, It also includes a blade floating spring (7), which is located in the receiving cavity (11) of the blade holder (1) and at the bottom of the multiple reciprocating blade assembly (2). The blade floating spring (7) includes a spring holder body (71) and a support spring (72) that is raised and extends above the spring holder body (71). The support spring (72) is in surface contact with the spring frame (25) for support. And / or, the top of the spring holder (25) abuts against the fixed blade (23).

9. The multi-set reciprocating blade combination hair trimmer according to claim 8, characterized in that, It also includes a blade positioning piece (28), which is located on the hinge part (241) of the fixed blade holder (24) and is hinged to the hinge part (241). The blade holder (1) is provided with a plurality of limiting slots (12) for accommodating the blade positioning piece (28).

10. The multi-set reciprocating blade combination hair trimmer according to any one of claims 1-3, characterized in that, The eccentric shaft (51) and the swing disk (31) are connected by an eccentric shaft (51) bearing; Alternatively, the eccentric shaft (51) and the swing disk (31) are connected by a swing disk connecting rod (8), which includes a first swing disk connecting rod segment (81) and an upwardly extending second swing disk connecting rod segment (82). The first swing disk connecting rod segment (81) is connected to the eccentric shaft (51), and the second swing disk connecting rod segment (82) is connected to the swing rod seat (4). The swing rod seat (4) is provided with a limiting groove (44) for the second swing disk connecting rod segment (82) to pass through and for limiting the second swing disk connecting rod segment (82).

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