CN114633288A - Electric hair clipper tool bit subassembly - Google Patents

Abstract

The invention discloses an electric hair clipper tool bit assembly which comprises a driving mechanism and a tool bit, wherein the driving mechanism comprises a rotating motor, an output bearing and a swing rod, the rotating motor drives the swing rod to swing left and right through the output bearing, the tool bit comprises a blade and a tool pad, the tool pad is provided with a cambered surface connecting groove, and the end part of the swing rod is inserted into the cambered surface connecting groove and is connected with the tool pad. The invention converts the rotary motion of the rotary motor into the left-right motion of the movable blade through the output bearing, the swing rod and the knife pad, and reduces the friction area between the knife pad and the swing rod; through the linked operation of the output bearing and the oil-containing bearing, a large amount of energy loss caused by friction in the power transmission process is reduced, and the wear-resistant part is arranged between the swing rod and the output bearing, so that the low-energy-consumption conversion of the movement direction of the rotating motor is realized, the torsion loss is reduced, the service life of a product is prolonged, the blade can smoothly complete hair cutting, and particularly for thick hair with large area, a satisfactory trimming effect can be achieved, and the energy loss can also be reduced.

Description

Tool bit assembly of electric hair clipper

Technical Field

The invention relates to the technical field of electric clippers, in particular to a cutter head component of an electric clipper.

Background

Electric hair clippers are common hair dressing tools, are mainly used for trimming human hair or animal hair, generally adopt a reciprocating structure, and a power source drives a blade to reciprocate through a mechanical structure to cut the hair. For can high-efficient, cutting hair fast, actuating mechanism is mostly the motor, rotates at a high speed through the motor, drives the high-speed motion of movable blade in stationary blade surface through drive mechanism, cuts the hair that passes the stationary blade. In the process, friction exists among the mechanical connecting structures such as the driving mechanism and the transmission mechanism, the blade and the blade, and the friction frequency is high due to high-speed movement, so that the friction heating is serious when the hair is long-time or thick and thick hair is treated, the energy consumption of the electric hair clipper is greatly increased, the handheld use of the product is influenced, the load of each connecting contact point is high, the abrasion is serious, and the service life of the product is greatly shortened.

The above disadvantages need to be improved.

Disclosure of Invention

To overcome the deficiencies of the prior art, the present invention provides an electric clipper head assembly.

The technical scheme of the invention is as follows:

the utility model provides an electric hair clipper tool bit subassembly, includes actuating mechanism and tool bit, actuating mechanism includes rotating electrical machines, output bearing and pendulum rod, rotating electrical machines passes through output bearing drives the pendulum rod horizontal hunting, the tool bit includes blade and shim, the shim sets up the cambered surface spread groove, insert the tip of pendulum rod the cambered surface spread groove with the shim is connected.

In the above electric hair clipper head assembly, the output bearing is a high-hardness ball bearing.

In the electric hair clipper head assembly, the rotating shaft of the rotating motor is connected with the output bearing through the eccentric wheel.

In the electric hair clipper head assembly, the wear-resistant part is arranged between the output bearing and the oscillating bar.

Furthermore, the lower end of the swing rod is provided with a connecting part, two sides of the tail end of the connecting part are raised, the middle part of the tail end of the connecting part is recessed, a slot is arranged in the wear-resistant part, the connecting part is inserted into the slot, so that the wear-resistant part covers the connecting part, and the swing rod is connected with the wear-resistant part.

The oscillating bar comprises an arc end and a connecting end, a connecting round hole is formed in the joint of the arc end and the connecting end, and the connecting round hole is connected with the fixed base through the oil bearing.

Further, the end of the oil-retaining bearing is connected with a fixing screw.

The electric hair clipper head assembly further comprises a mounting base and a fixing base, the rotating motor is arranged inside the mounting base, a rotating shaft of the rotating motor extends out of the surface of the mounting base and is connected with the output bearing, the fixing base is fixed on the mounting base through screws, and the oscillating bar is connected with the fixing base through an oil bearing.

In the electric hair clipper head assembly, the swing rod is provided with a plurality of heat dissipation grooves.

The blade of the electric hair clipper head component comprises a fixed blade and a movable blade, and the swing rod drives the movable blade to slide on the fixed blade through the blade pad.

Furthermore, the shim is provided with a guide groove, the movable blade is provided with an assembly groove, and the guide groove is inserted into the assembly groove, so that the shim is connected with the movable blade.

Still further, the fixed blade is provided with a clearance groove with a convex bone, the convex bone is inserted into the guide groove, and the knife pad drives the movable blade to slide left and right, so that the convex bone slides left and right in the guide groove.

Further, the fixed blade all sets up the screw hole that is triangular distribution with fixed baseplate, the fixed blade with fixed baseplate passes through screw fixed connection, the screw is followed respectively the front and the back of fixed blade pass to be connected fixed baseplate.

Still further, a knife rest is arranged between the fixed blade and the fixed base, and the knife rest fixes the torsion spring in the positioning groove of the fixed blade.

Furthermore, one end of the torsion spring is fixed between the fixed blade and the fixed base, and the other end of the torsion spring is propped against the knife pad.

Furthermore, a strip-shaped first heat dissipation groove and a plurality of inclined grooves are further formed in the contact surface of the fixed blade and the movable blade.

Furthermore, the fixed blade is provided with cutter teeth, and two adjacent cutter teeth are separated by a second heat dissipation groove.

According to the scheme, the invention has the beneficial effects that the rotary motion of the rotary motor is converted into the left-right motion of the movable blade through the output bearing, the swing rod and the knife pad, so that the friction area between the knife pad and the swing rod is reduced; the output bearing and the oil bearing are operated in a linked manner, so that a large amount of energy loss caused by friction in the power transmission process is reduced, the wear-resistant part is arranged between the swing rod and the output bearing, the low-energy-consumption conversion of the movement direction of the rotating motor is realized, the torsion loss is reduced, the service life of a product is prolonged, the blade can smoothly cut hair, particularly the large-area thick hair, the satisfactory trimming effect can be achieved, the energy loss can be reduced, and the product efficiency is improved.

1. The swing rod and the knife pad are adopted to drive the movable blade to move: the split design can select the materials at the joints between the movable blade and the transmission mechanisms such as the swing rod, and the knife pad can be made of the materials with small friction coefficient, and the cutting requirement of the movable blade is not required to be considered.

2. The contact friction area between the swing rod and the knife pad is reduced as much as possible: through the design of the shape and the area of the top of the U-shaped groove and the top of the cambered surface, the swing rod realizes power transmission through the steel shaft in the relative motion process of the cutter pad, removes redundant unnecessary contact area, keeps the contact area constant as much as possible, and reduces friction while ensuring the power transmission effect.

3. The setting of wearing parts: the power output between the rotating motor and the swing rod is increased by the wear-resistant part, and due to the adoption of the contact type driving mode of the swing rod, the contact area and the friction coefficient of the wear-resistant part can be effectively controlled, multiple times of low-friction movement can be completed, and the service life of a product is prolonged.

4. The output bearing is a high-strength ball bearing: because the movement speed between the rotating motor and the movable blade is changed, as a first step of power transmission, a high-strength ball bearing is used for reducing friction and ensuring the power of output torque as much as possible.

5. An oil-retaining bearing: the invention uses the oil bearing as the fixed structure of the oscillating bar, changes the friction type of the oscillating bar joint, and forms a supporting and fixed structure with small friction.

6. The fixed blade and the movable blade move relatively in parallel: the traditional structure of the fixed blade and the movable blade ensures that the movable blade does not do parallel reciprocating motion in the motion process, and the distance between the movable blade and the fixed blade changes in the motion process, so that the shearing force applied to hairs passing through the middle of the fixed blade is different from that applied to hairs passing through two ends of the fixed blade, and the shearing effect is poor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic structural diagram of the swing link.

Fig. 4 is a schematic structural view of the shim.

Fig. 5 is an exploded view of the movable blade and the stationary blade.

Wherein, in the figures, the respective reference numerals:

1. a drive mechanism;

11. a rotating electric machine; 111. a rotating shaft;

12. mounting a base; 121. an upper shell; 122. a lower case;

13. an output bearing; 14. a fixed base; 15. an oil-retaining bearing; 151. an optical axis;

16. a swing rod; 161. a wear part; 162. a connecting end; 163. an arc end; 164. a steel shaft;

17. an eccentric wheel;

2. a cutter head;

21. fixing a blade; 211. an empty avoiding groove; 212. a convex bone; 213. cutter teeth; 214. a chute; 215. a first heat sink;

22. a movable blade; 221. assembling a groove;

23. a tool holder; 24. a torsion spring;

25. a shim; 251. an arc-shaped top; 252. U-shaped groove; 253. connecting grooves on the cambered surface; 254. a guide groove;

3. fixing screws; 4. and connecting screws.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. The terms "upper", "lower", "left", "right", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. "poly" means two or more unless explicitly defined otherwise.

A cutter head component of electric hair clippers comprises a driving mechanism 1 and a cutter head 2, wherein the driving mechanism 1 comprises a rotary motor 11, an output bearing 13 and a swing rod 16, the rotary motor 11 drives the swing rod 16 to swing left and right through the output bearing 13, the cutter head 2 comprises a blade and a cutter pad 25, the cutter pad 25 is provided with an arc-shaped connecting groove 253, and the end portion of the swing rod 16 is inserted into the arc-shaped connecting groove 253 and connected with the cutter pad 25.

As shown in fig. 2, the rotating electrical machine 11 is a brushless electrical machine, the rotating electrical machine 11 is disposed inside the mounting base 12, the mounting base 12 is a housing structure, and in this embodiment, the housing structure is a cylindrical structure and is divided into an upper housing 121 and a lower housing 122, the upper housing 121 and the lower housing 122 are connected in a snap-fit manner to form an enclosing structure, the main body of the rotating electrical machine 11 is enclosed inside, and only the hole groove of the upper housing 121 is left, so that the rotating shaft 111 of the rotating electrical machine 11 extends out of the surface of the mounting base 12. The upper part of the mounting base 12 is provided with a fixing base 14, and the fixing base 14 is fixed on the mounting base 12 through screws and used for fixing the cutter head 2 and the transmission structure. The fixed base 14 comprises a side seat and a base, a through hole is arranged on the base, and a rotating shaft 111 of the rotating motor 11 penetrates through the base of the mounting base 12 and is connected with the output bearing 13 through an eccentric wheel 17. The output bearing 13 is sleeved outside the eccentric wheel 17, so that the output bearing 13 rotates synchronously with the rotating shaft 111 to transmit the power from the rotating motor 11. The side seat of the fixed base 14 is connected to the bottom of the blade by a screw provided in a triangular shape, so that the blade is connected to and fixed to the rotary motor 11 and the like.

In the present embodiment, the output bearing 13 is a high-hardness ball bearing. The output bearing 13 is sleeved outside the eccentric wheel 17, the output bearing 13 is driven to rotate by the eccentric wheel 17 along with the rotating shaft 111, the edge of the output bearing 13 rotates around the rotating shaft 111, the edge position of the output bearing 13 changes, so that the swing rods 16 are respectively arranged at two sides of the output bearing 13, in the rotating process of the output bearing 13, the edge of the output bearing 13 changes the positions of two sides of the swing rod 16, and two end parts of the swing rod 16 are in a linkage state, so that the swing rod 16 can swing left and right. In addition, the output bearing 13 is directly connected with the rotating shaft 111 of the rotating motor 11 through the eccentric wheel 17, so that the friction between the rotating motor 11 and a transmission structure is reduced, and the friction energy consumption is reduced by using the bearing.

Set up wearing parts 161 between output bearing 13 and pendulum rod 16, compare and directly be connected with output bearing 13, the friction between output bearing 13 and the wearing parts 161 is less, and the damage influence to the device is little, can effectively guarantee the performance of product, increases the working life of product. In this embodiment, as shown in fig. 3, the swing link 16 includes an arc end 163 and a connection end 162, two ends of the arc end 163 are respectively disposed on two side surfaces of the output bearing 13, an end of the arc end 163 is provided with a connection portion, two sides of a terminal of the connection portion are raised, a middle portion is recessed, a slot is disposed in the wear-resistant part 161, and the connection portion is inserted into the slot, so that the wear-resistant part 161 covers the connection portion, and the swing link 16 is connected with the wear-resistant part 161. The junction of circular arc end 163 and link 162 sets up the connection round hole, fixed baseplate 14 sets up the hole in the same position of connecting the round hole correspondence, connect the inside oily bearing 15 that sets up of round hole, use optical axis 151 to pass the hole that oily bearing 15 center is connected with fixed baseplate 14, and set up the set screw at the tip of oily bearing 15 and be fixed in oily bearing 15, pendulum rod 16 on fixed baseplate 14, and make circular arc end 163 and link 162 form swing structure, and the both ends of circular arc end 163 are the linkage form. When the output bearing 13 drives the arc end 163 to swing left and right through the wear-resistant member 161, the upper connecting end 162 moves left and right, and the movement direction is changed. Preferably, in order to reduce the friction area between the swing link 16 and the fixed base 14 and increase the heat dissipation area, the swing link 16 is provided with a plurality of heat dissipation grooves.

As shown in fig. 3 and 4, the connecting arc-shaped groove 253 includes an arc-shaped top 251 and a U-shaped groove 252, and the connecting end 162 of the swing link 16 is inserted into the U-shaped groove 252 of the connecting arc-shaped groove 253 through a steel shaft 164, so that the swing link 16 is connected with the shim 25. The surface of the arc-shaped top 251 is an arc surface, the area of the arc-shaped top 251 is reduced from the middle part to two ends, the U-shaped groove 252 is in a horseshoe shape, the middle of the U-shaped groove 252 is hollow, the U-shaped groove 252 inclines downwards from bottom to top, and the area of the upper part of the U-shaped groove 252 is smaller than that of the lower part of the U-shaped groove 252. The end face of the connecting end 162 of the swing link 16 supports against the arc-shaped top 251 and the U-shaped groove 252, technically, the swing link 16 and the arc-shaped connecting groove 253 are properly assembled as much as possible, and friction of the swing link 16 in the power transmission process is reduced. In the process, firstly, the contact area between the swing link 16 and the shim 25 is very limited, only part of the surfaces of the arc-shaped top 251 and the U-shaped groove 252 are in contact with the swing link 16, and the connecting end 162 of the swing link 16 also adopts an arc surface structure to reduce the contact area. Secondly, in the moving process of the swing rod 16, the contact area between the swing rod 16 and the cutter pad 25 is kept constant as much as possible, the arc surface of the arc top 251 is reduced from the middle part to two sides, and the area of the U-shaped groove 252 is smaller in the upper part than in the lower part, namely, is increased from the middle part to two sides, which means that when the swing rod 16 is located inside the arc connecting groove 253, the contact area with the arc connecting groove 253 is in a constant state, so that the requirement of power transmission is guaranteed, and the advantage of small contact area is considered. Moreover, the surface around the hollow part of the U-shaped groove 252 is a cambered surface structure, and the connecting end 162 of the swing link 16 is also a cambered surface structure, so that when the manufacturing process makes it relatively smooth, the friction of the contact surface can be further reduced.

The knife pad 25 moves left and right under the driving of the swing rod 16, thereby driving the blade 22 to move left and right, and completing the cutting action. The blade comprises a fixed blade 21 and a movable blade 22, and the swing rod 16 drives the movable blade 22 to slide on the fixed blade 21 through a knife pad 25. The shim 25 is provided with a guide groove 254, the movable blade 22 is provided with an assembly groove 221, the guide groove 254 is inserted into the assembly groove 221, so that the shim 25 is connected with the movable blade 22, and the shim 25 is driven by the swing rod 16 to drive the movable blade 22 to move left and right on the fixed blade 21, so as to cut hair penetrating through the teeth 213 of the fixed blade 21.

In the embodiment, one rotation of the rotary motor 11 is equal to one rotation of the output bearing 13, and the swing rod 16 swings left and right once, so that the movable blade 22 is driven by the knife pad 25 to move left and right one round along the fixed blade 21. Because the movable blade 22 needs to move along the surface of the fixed blade 21, if the friction is not reduced by adopting a technical means, a large amount of heat can be generated, the product performance is seriously influenced, and the energy consumption is improved. Therefore, the present embodiment reduces the contact area between the stationary blade 21 and the movable blade 22 as much as possible. As shown in fig. 5, the fixed blade 21 is provided with the clearance groove 211 with the convex rib 212, the movable blade 22 is provided with the assembling groove 221, the shim 25 is provided with the guide groove 254, the convex rib 212 is inserted into the guide groove 254, the guide groove 254 is inserted into the assembling groove 221, and the fixed blade 21 and the movable blade 22 are connected through the shim 25, so that the movable blade 22 can move along the rail, and the friction area between the fixed blade and the movable blade can be greatly reduced. In addition, the contact surface between the fixed blade 21 and the movable blade 22 is further provided with a strip-shaped first heat dissipation groove 215 and a plurality of inclined grooves 214, two adjacent blade teeth 213 on the fixed blade 21 are separated by a second heat dissipation groove, the heat dissipation area of the fixed blade 21 is increased to the maximum extent, accumulated heat is dissipated rapidly, and the inclined grooves 214 can also store a small amount of lubricating oil to reduce friction.

Connection of the stationary blade 21 and the movable blade 22: the movable blade 22 is sandwiched by the shim 25 and the fixed blade 21, the bottom of the fixed blade 21 is fixed on the fixed base 14, and the driving force of the left-right movement of the shim 25 is derived from the swing rod 16, so that the acting force on the axis is insufficient, and in the embodiment, the fixation of the movable blade 22 and the shim 25 is realized by the torsion spring 24. One end of the torsion spring 24 abuts against the outer surface of the shim 25 and provides a force towards the movable blade 22, and the fixed blade 21 is fixed, so that the movable blade 22 and the shim 25 can be tightly pressed and fixed and move left and right under the force of the swing rod 16. The other end of the torsion spring 24 needs to be fixed to transmit acting force, a knife rest 23 is arranged between the bottom of the fixed blade 21 and the fixed base 14, and the knife rest 23 fixes the other end of the torsion spring 24 in the positioning groove of the fixed blade 21. The knife rest 23 is fixed on the fixed blade 21 through the fixing screw 3, and the fixing screw 3 passes through the knife rest 23 and the fixed blade 21 in sequence, so that the knife rest 23 is fixed on the fixed blade 21.

The fixing of the blade is accomplished by mounting the stationary blade 21 on the fixed base 14. The bottom of the fixed blade 21 and the side seat of the fixed base 14 are both provided with screw holes, the fixed blade 21 is fixedly connected with the fixed base 14 through a connecting screw 4, the knife rest 23 is arranged between the fixed blade 21 and the fixed base 14, and the connecting screw is inserted from the front of the fixed blade 21, penetrates through the knife rest 23 and is fixed on the fixed base 14, so that the fixed blade 21, the knife rest 23 and the fixed base 14 are fixedly connected, and the blade is fixed on the fixed base 14.

The invention converts the brushless rotation motion of the rotating motor 11 into the left and right swing motion of the knife pad 25 and the movable blade 22, the swing rod 16 forms an integrated power combination structure between the moving end and the driving end, the swing rod 16 and the knife pad 25 form a transmission structure between the movable blade 22 and the rotating motor 11, the integrated combination structure reduces the friction surface between the driving mechanism 1 and the moving mechanism, the friction and the energy consumption are small, the torsion is large, and the service life of the electric hair clipper is prolonged. In order to reduce the friction area between the driving mechanism 1 and the moving mechanism and the transmission mechanism, the invention reduces the contact area of each connection part as much as possible while ensuring the transmission efficiency, and if necessary or changing the connection structure, the support point or the fixed structure forms rolling friction.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (10)

1. The utility model provides an electric hair clipper tool bit subassembly, its characterized in that, includes actuating mechanism and tool bit, actuating mechanism includes rotating electrical machines, output bearing and pendulum rod, rotating electrical machines passes through output bearing drives the pendulum rod horizontal hunting, the tool bit includes blade and shim, the shim sets up the cambered surface spread groove, the tip of pendulum rod inserts the cambered surface spread groove and with the shim is connected.

2. An electric hair clipper head assembly as defined in claim 1, wherein said output bearing is a high hardness ball bearing.

3. An electric hair clipper head assembly as defined in claim 1, wherein a wear member is disposed between said output bearing and said swing link.

4. An electric hair clipper head assembly as defined in claim 3, wherein the lower end of the swing link is provided with a connecting portion, both sides of the end of the connecting portion are protruded, the middle portion is recessed, the wear member has a slot therein, the connecting portion is inserted into the slot so that the wear member covers the connecting portion, and the swing link is connected to the wear member.

5. The electric hair clipper head assembly of claim 1, wherein the swing link includes an arc end and a connecting end, a connecting circular hole is provided at a junction of the arc end and the connecting end, and the connecting circular hole is connected to the fixed base through an oil bearing.

6. The electric clipper head assembly of claim 1, further comprising a mounting base and a mounting base, wherein the rotating motor is disposed inside the mounting base, a rotating shaft of the rotating motor extends out of a surface of the mounting base and is connected to the output bearing, the mounting base is fixed to the mounting base by screws, and the swing link is connected to the mounting base by an oil bearing.

7. The assembly of claim 1 wherein the blade includes a stationary blade and a movable blade, and the rocker arm drives the movable blade to slide on the stationary blade via the pad.

8. The assembly according to claim 7, wherein the pad defines a guide slot, and the movable blade defines an assembly slot, the guide slot being inserted into the assembly slot, such that the pad is coupled to the movable blade.

9. The assembly according to claim 8, wherein the stationary blade has a clearance groove with a rib, the rib is inserted into the guide groove, and the pad drives the movable blade to slide left and right, so that the rib slides left and right in the guide groove.

10. The electric hair clipper head assembly of claim 7, wherein the contact surface of the stationary blade and the movable blade is further provided with a first heat dissipating groove and a plurality of inclined grooves.

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